Recent orders
Development Of Meso or Micro Scale Tool Systems
Micro/Meso Scale Machine Tool Systems
Contents
TOC o “1-3” h z u Abstract PAGEREF _Toc376411506 h 1Introduction PAGEREF _Toc376411507 h 2Objective and rationale micro machine tools PAGEREF _Toc376411508 h 7Micro Machine Tool Test bed Development PAGEREF _Toc376411509 h 12Positioning system PAGEREF _Toc376411510 h 12Piezoelectric- actuated systems PAGEREF _Toc376411511 h 13
Abstract This paper addresses the Development Of Meso/Micro Scale Tool Systems. The reason for this paper is the need of processes and efficiency achieving high accuracy. The analysis of meso/micro scale tool system is addressed first followed by the examples of the micro/meso scale tool system. Meso/micro manufacturing related technology is the key to maximizing high value manufacturing. Methodology to design reconfigurable meso/micro scale machine tool in the integrated manufacturing, process and product system development context is also addressed in this paper. Two axis first generation test bed micro machine tool developed to assess the new design method also follows. Open architecture and axis movement uses the micro actuator, so as to guarantee the micro machines. Three critical problem areas pertinent to the development of precision high speed spindles for meso/ micro scale machine tool, driven by air turbines make the focus of this work. The principle for machine tool miniaturization is depicted and also the followed by the description of the design of initial experimental testbeds that physically demonstrate the feasibility of the meso/micro machine tools system concept. The testbeds uses high speed miniature spindles that are needed to obtain the required cutting velocities for the effective cutting of metals.
The use of voice coil actuated and piezoelectric feed drive technologies is also talked about. The
Meso/micro machine tool systems are instrumented with load cells that collect gather data for experimentation on micromachining processes. Three dimensional features are machined on one of the testbeds and cutting force data, machined feature profiles, and surface finish data are presented.
Introduction Miniature components are required for a wide range of applications from the biomedical to the aerospace industries. Many of these components contain three-dimensional features and are constructed from materials such as titanium, stainless steel, aluminum and brass. Parts of the size of 500 micro millimeters with holes 125 micro millimeters in diameter and wall thickness of 50-25 millimeters are now common in many places. Such components are recently being manufactured on large, ultra-precision machine tools. Lately, a number of investigations have been reported on the machining of micro-scale components, features and the associated issues of process mechanics at this level. Generally, this work has been done using specially-fitted ultra-precision, conventionally-sized machine tools. Given the cutting forces and the part size present during micro-machining, using large machine tools results in a very inefficient utilization of resources in terms of cost floor space, and energy required. These ultra-precision machines in general require specialized and expensive design features to achieve the satisfactory level of accuracy. Simplification of the design allows one to meet the accuracy requirement and the result is less expensive machine tool. For example, shorter Abbe offsets leads to less amplification of angular errors. These enable one to use components with less stringent geometric tolerances and these results to less expensive components. Smaller moving masses mean less if no inertial effects and less energy necessary to move the machine components. Less input energy also result in smaller heat radiation that result in smaller heat deformation of the machine structure and less expensive machine designs to transport the thermal energy away from vital components. Some part of research is being directed toward developing smaller machine tools. For instance the micro lathe measuring 32 mm in length developed in 1996 (Kim, C. J., Mayor, J. R., & Ni, J, 2004). This paper present the evaluation and design of miniature machine tools that have the ability of achieving significantly higher cutting speeds, producing three-dimensional features in metals, and recording the cutting force signal during machining. Data are presented that measures the performance of these testbeds.
Review Recently, a number of investigations have been reported on the machining of micro/ meso scale component and features and the associated issues of process mechanisms at this level. Precision machining processes have been studied on milling machines (Tansel and Bao, 2000; Schaller et al., 1999; Friendrich et al., 1998; Adams et al., 2001 ) and also diamond turning machines (Lucca et al., 1994; Cheng and Lee, 2001). In almost all cases these works have been done using conventionally sized, special fitted ultra-precision machine tools. Using large tools will result to an inefficient utilization of resources in terms of costs, energy requirement and also the floor space. To achieve satisfactory level of accuracy for ultra-precision machines requires special design feature which generally expensive. There are many sources of errors found in machine scale favorably with miniaturization (Kussul et al., 1996), this result to simplification of the design to meet the accuracy requirement, this leads to a less expensive micro/ meso machine tool. Some research has been directed toward developing smaller micro/ meso machine tools. In 1996 Kitahara developed a micro lathe which measured 32 mm in length. Lu and Yoneyama in 1996 reported that the micro lathe sufferers’ poor accuracy and it is also very limited shape generation capability. As per the Lu and Yoneyama in 1996 the lathe was instrumental with a tool dynamometer and study of cutting forces was done ( for the list of those who contributed to developing micro machine scale tools see the Appedix). The cutting speed was exceptionally low as result of using 15,000-rpm dc motor for the spindle. The cutting speed was about one to three meter per minute for brass.
Examples of micro/ meso scale machine tool systemVoice-Coil-Actuated System
The Specification performance
Since one of the functionality of this test bed is to machine 3D properties in metals, adequate cutting speeds need to be achieved for efficient material withdrawal. To obtain a cutting speed of [200 m / min] with tools of diameter of [250 – 500 µm] spindle velocity of [125,000 – 250,000 rotation per meter are required. Surely, the smaller diameter tooling around will need even higher arbor velocity. In order to effectively and conclusively study the machining procedure at feed values of a few µm/tooth, an arbor desired (Vogler, M. P., Liu, X., Kapoor, S. G., DeVor, R. E., & Ehmann, K. F, 2002).
In order high quality components and have the ability to create composite features, closed-loop positioning resubmit is needed. Ideally, submicron resoluteness is required to make the properties that are desired.
Cutting force measurement is needed to ensure a closer examination of the micro-milling procedures. Anticipated cutting forces are of the order of the magnitude of [100 m N]. This requires that a given force sensor with a brink limit well below 100 m N is used.
Test bed Design.
In this section, all the designs of the illumination machine tool testbed shown in the figure 4 will be exclusively described. Descriptions of the elements used in the machines as well as the procedure sensing equipment used will be delivered (Lai, X., Li, H., Li, C., Lin, Z., & Ni, J, 2008). Finally, the controller abilities will be briefly described
The testbed is comprised of three subsystems categories:
1) A system that provide the absolute rotation of the cutting tool.
2) A system that gives a proportional motion between the work piece and the tool.
3) A system to supervise the cutting procedure. The general size of the test bed, excluding the power supply, is [250 mm (L) x 150 mm (W) x 200 mm (H).]
Spindle.
Prognosticating technologies for the arbors of miniaturized machine tools are the high-speed spindles used in the den try industry. These air-turbine arbors are very small (lees than 20 mm in the diameter and length) and are very inexpensive. However, these spindles will need an improved run out ability. Therefore, while the total accuracy improvement of all these small air-turbines is being researched on, a huge, much accurate air-turbine arbor was chosen for the first test bed.
The spindle is waxed on a micrometer-driven linear glide to facilitate the changing of the tooling. The spindle can be retracted from the work piece, the tooling around changed, and then moved backwards on to the cutting position.
Analyses and discussionMicro-manufacturing is the manufacture of highly important components with characteristic sizes less than 1mm. This is a huge and rapidly rising manufacturing field sector. Meso scale/ Micro-manufacturing devices (machines) constitute both high-volume and extremely high-value products. The first most step in the generation of micro-manufacturing tools is the absolute definition of the particular problem domain. Parts and properties that lie in between what is usually mentioned as the “micro” phase and the traditionalistic “macro” phase. This is what is normally referred to as the “meso” level. Miniature element are needed for a broad range of applications from the aerospace sciences to the biomedical industries. Many of these elements contain 3D features and are created from materials such as aluminum, stainless steel, brass, and titanium. small Parts of the size of 500 µm having holes of size 125 µm in their radius doubled and thickness of 25-50 µm on their walls.
This work of micro-manufacturing has been conducted using established, particularly-fitted hyper-precision machine tools. Recently, a number of researches have been evidently reported on the machining of several micro-scale features and elements and the associated issues of process mechanics at this given level. Precision-machining procedures have been analyzed on milling machines (Bao and Tansel, 2000; Schaller et al., 1999; Friedrich et al., 1998; Adams et al., 2001) and diamond turning machines (Lucca et al., 1994; Cheung and Lee, 2001). Generally, this work has been dealt using ultra-precision, specially-fitted, conventionally-sized, machine tools.
Given the portion size and the cutting forces posing during the micro-machining, using huge machine tools outcomes in a very inefficient and inadequate utilization of the of resources on floor space, costs and energy requirements. These hype-precision machines do generally require the most expensive and highly specialized design properties to achieve the required level of accuracy.
Many genesis of the error available in machine tools scale more favorably with miniaturization, allowing the space simplification of the design to meet the accuracy standards, resulting in a more less expensive machine tool. For instance, the shorter Abbe offsets outputs in less amplification of all angulate errors. This gives a chance to use components with a lesser strict geometric tolerances, and, therefore, output in cheaper components. Lesser moving masses average less inertial outcomes and small energy required in order to move the machine components. The less input energy also greatly results in a smaller heat dissolution that results in a much smaller thermal deformation of the machine components and structure and less expensive machine designs to move the total thermal energy away from crucial component.
Objective and rationale micro machine toolsIn defining a specific problem domain for the micro-Machine Tool development, it is really significant in that size and precision necessities are considered as total separate and different issues but yet in a joint way. Figure 1 consistently represents the precision/size problem field. In the bottom to the far right, the conventional hype-precision problem domain is shown, for which there has been a much considerable study, including several pioneering work led by one Bryan (1979) at Lawrence Livermore Labs at around 1970’s. Likewise, the upper left most part of the graph shows the micro and the nano-scale quantified difficulties that the (MEMS) and material fields continue to address. To the upper right all those applications that do deal with hype-precision at the mini-scale standard are represented. It is the target of this study to consider mechanical manufacturing at the micro-scale through the use of micro-scale machine tool systems. An important properties capability of such systems will be the ability to machine three dimensional properties with no materials restrictions, which further differentiates the micro-machine tool system from the distinctive (MEMS) and LIGA systems.
Two pairs of metrics are gearing the conceptualization and subsequent development of the micro Machine Tools systems (Dornfeld, D., Min, S., & Takeuchi, Y, 2006). The first is proportional accuracy, defined as the ratio of the most maximum achievable tolerance to the work piece size, and the following is a volumetric utilization, explained, as the direct proportion of the machine and Work piece volumes. It is extremely evident that the second metric is also much closely related to the subsequent energy efficiency of this mechanism.
The figure 2 quantitatively shows the region of their letter effort in terms of the proportional accuracy.
The main objective is the development of micro-scale machining potential with proportional accuracy between [10 – 2] and [10 – 4] when the machining objects with dimensions ranging between 50 and 5000 µm, considered “conventional micro-scale machining” [region 5 in Figure 2]. It is believed that later developments can considerably increase this metric. It can also be taken that in inviolable terms this kind of development would yield much tolerances corresponding to the hype-precision machining on the conventional equipment.
Figure 3 spotlights the relation of the projected micro-scale machine tool system to conventional machines. It is evident that this conventional machines do exhibit a very low volumetrically utilization. This is, in particular, the situation when machining small portion on the conventional machines where their volumetric utilization can go beyond [106]. The development of micro Machine Tools attempts, on the micro scale, in order to improve this ratio by ten [10] to hundred [100] times. The bold ellipsoid in figure 3 shows the areas of this effort.
During the development of an micro Machine Tool, there are various functions and abilities of the given machine tool system that need to be put in to consideration are those that are fundamental to the conventional systems: a stationary or a rotating cutting tool, a means to rotate this cutting tool or the given work piece at the needed speeds, a device in order to facilitate proportional motions in between the Work piece and the final cutting tool, including propulsion of axes, portion featuring, a physical component structure within which to integrate the afore mentioned fully functional elements, a power source(s) and motion controller. Lastly, machine tool systems in the given (50 mm) 3 to (250 mm) 3 volume ranges will then be developed, with the given power sources and controller occupying outside of this space. It is very important from the beginning that all these entities are considered as part of the machine tool “functions”, not necessarily be confused with the components and mechanisms that are habitually used to get these functions in universal machine tools. This distinction will enable more innovative and creativity in executing these functions, for instance, machining several parts components from a huge sheet and then usually removing the parts that may be utilized in order to avoid the difficulties of fixing the individual parts
It is desired to put into consideration the machining of all the holes, pockets, slots, etc. of a intensity that can be accomplished with all current tooling, which is fixed to about the [50 – µm] in diameter level. The initial aims are to deal with joyriding that is in the [250 – 500 µm] range. Cutting of the metals (SAE 1045, for example, at universal cutting speeds of approximately [200 m / min] with such tools that will need spindle rotational speeds in the [100,000 to 250,000 r pm] range. Miniature arbors, powered via/through an air turbine mechanism, such as that are used in today’s dentistry, have the capability, with the run-outs that are on the order of 8-µm with the already existing bearing systems. It is much clear that the most successful realization of the high accuracy micro-Machine Tools will need a considerable approaches in high-speed miniature arbor technologies.
In the meso-machine tool system, the total range of motions, all motion increases, and the forces that are required to enable motion are all the orders of magnitude below those that are need of universal machine tool systems. Since habitual macro-actuators with extremely high rotor mass cannot be used because of the demands of accuracy, dynamic and gentleness, new driven-feed intense technologies need to be considered.
Micro Machine Tool Test bed DevelopmentThe aims of developing the micro/meso Machine Tool test beds are dual. The first aim is to develop testbeds in which several technologies could be researched for extensive use in later machine tool miniaturization developments methods. Secondly is to use these same testbeds to study the well renowned micro-milling/drilling procedures (Kim, C. J., Mayor, J. R., & Ni, J, 2004). Several different types of meso-Machine Tool model testbeds have been developed in order to dig into the feasibility of different feed-drive and arbor technologies and to search on the cutting operations in milling and in drilling execution.
Ratings are still in progress. The two primary feed-drive technologies that have been commonly used are voice-coil motors and piezoelectric actuators. A brief description of the testbeds created to study these two technologies follows.
Positioning systemAfter surveying all the present technologies for the positioning subsystem of the
Meso- Machines Tool’s, dual technologies were of immediate stake- piezoelectric rubbing drives and voice-coil drives. Voice-coil positioning systems with several linear encoders for position resubmit and higher containing force were chosen for all the first micro-machine Tool test beds due to the availability of readily packaged point location positioning systems and the hope to further exclusively quantify the [m MT] edging force system. This kind of the given system utilizes direct-drive applied science so that the movement is free and smooth from any rebound. The cutting speed can be easily controlled and adjusted.
Controller
A four-axes controller offered by SMAC corporation is used to explicitly process the encoder signals, to perform the positioning resubmits, and deliver the
Required current to these voice-coil actuators . The controller also has programmable end product and hence allowing the accumulation of the following error, motor current and encoder distortions.
Piezoelectric- actuated systemsTo set the feasibility of further miniaturization, to search and assess the different element technologies, and at the same time accomplish an important reduction in the total cost of the
M MT a test bed that fully utilizes piezo-actuators and dental turbine based arbors is also being generated. Piezoelectric actuators are highly attractive because of their extremely low cost, their small size and the probability of generating unconstrained travel distances.
Static Accuracy Characterization
The 6-DOF geometrical error measuring for m MT . A novel optic 6-DOF geometrical error measurement scheme was created by using a laser module, a beam divider, and position location sensitive detectors.
A series of research experiments to get full pose of the laser module were carried on and their outputs were compared with those from laser interferometer. Measure accuracy was more in effect than ±0.6 um for total translational elements and ±0.6 arc seconds for rotational elements respectively with the linear calibration.
ConclusionMicro/ meso machine scale tool system reduces the time and cost involved in production improving the profitability and productivity. Micro/meso machine scale tool system facilitates the ease in material handling for unloading and loading the work piece, eliminating the risk of losing or damaging the work piece in the process.
ReferencesDornfeld, D., Min, S., & Takeuchi, Y. (2006). Recent advances in mechanical micromachining. CIRP Annals-Manufacturing Technology, 55(2), 745-768.
Kim, C. J., Mayor, J. R., & Ni, J. (2004). A static model of chip formation in microscale milling. Transactions of the ASME-B-Journal of Manufacturing Science and Engineering, 126(4), 710-718.
BibliographyVogler, M. P., Liu, X., Kapoor, S. G., DeVor, R. E., & Ehmann, K. F. (2002). Development of meso-scale machine tool (mMT) systems. TECHNICAL PAPERS-SOCIETY OF MANUFACTURING ENGINEERS-ALL SERIES
Chae, J., Park, S. S., & Freiheit, T. (2006). Investigation of micro-cutting operations. International Journal of Machine Tools and Manufacture, 46(3), 313-332.
Lai, X., Li, H., Li, C., Lin, Z., & Ni, J. (2008). Modelling and analysis of micro scale milling considering size effect, micro cutter edge radius and minimum chip thickness. International Journal of Machine Tools and Manufacture, 48(1), 1-14
AppendiceThe list who contributed to the development of micro/ meso scale machine tool systems:
Kitahara et al. in 1996 developed a micro lathe.
Lu in 1999 contributed in developing a micro lathe.
Yoneyama in 1999 also contributed in developing micro lathe.
Bao and Tansel 2000
Schaller et al., 2001
Friedrich et al., 1998
Adams et al., 2001
Lucca et al., 1994
Cheung and Lee, 2001
Critical Analysis of Strategic Approaches
Critical Analysis of Strategic Approaches
1. Porter’s Model
Porter’s Model was proposed with a focus on five critical industry level areas that include existing competitors, threats of new entrants, substitute products, supplier’s bargaining power and buyer’s bargaining power (Arons and Waalewijn n.d., 4). Existing competitors pose threats of cutthroat elimination through constricted market share affecting customer loyalty, reducing customers switching costs, increasing commodity varieties and making it difficult to leave and industry at a profit. New entrants pose threats of further reduction in market share, provision of substitute product alternatives and diluting customer loyalty. Technical requirements of supporting the new entrant are deemed to be readily available or accessible to support new entries, reducing barriers of competitors’ entry.
Substitute goods presence in the market lower customer loyalty and reduce market share that determines how profitable and sustainable an organization remains. Product prices are likely to be affected by substitutes that are usually of a low quality thereby reducing profitability. Suppliers’ bargaining power is heavy when only a few of them are interested in the business of an industry, leading to manipulation of supply prices. Buyers’ bargaining power depends on their perceived product value and quality. Customer loyalty and bargaining power oppose each other depending on their access to substitute goods and determination of how much value they can attach to a product in the competitive market (CMA 2007, p.9).
Advantages and Case Study in Complex
The model captures the industry level forces in a precise and simplified approach that enables strategic focus on important competition reorganization. Such a defined scope of the industry facilitates in tackling competition forces in a better way than as explained by any other model. In a perfect competition setting with effective regulations and level playing grounds, the industry is exposed to a perfect environment where Porter’s forces are clearly manifested. The model captures the industry needs in a perfect way that enables modeling of suitable actions against the forces of competition in an open approach. The model enables businesses generating ideas of minimizing competition as much as possible, among them being the justification of strategic alliances and partnerships, continued innovativeness, commitment to quality, employment of information systems to analyze market moves and define desirable market structure (Middleton 2003, p16).
In addition, Porter’s model focuses on profitability determining factors, which is a measurable variable for managers to consider in their strategies, unlike other qualitative features that are difficult to quantify. The applicability of Porter’s forces in many industries is important to managers who rely on measurable outcomes to inform workable and appropriate business strategy. Porter’s Forces witnessed in action can be witnessed in the case of Apple Inc. where the technology giants manifest various strategy forces in context of business operations in the global market. In terms of the company’s realities with threats of existing business rivalry, other huge technology companies such as Linux (Software) and Dell (hardware and software) providing different components stand in the way of Apple’s flawless presence (Wikiwealth, 2012). In countering this, Apple produces products with both the hardware and software from PCs to desktops, in a way that keeps off sharing through incompatibility.
Other competitors find it hard to beat Apple in its business model as illustrated by the uniqueness of its products, where its products cannot be replicated or shared with competitors. In an illustration of its unique brand presence and product design, Apple has attracted a number of court battles with existing players such as Samsung. The threat of new entrants to apple has been fought through a strategy to raise the bar for technology and making the technology specialization as unimaginable as possible. Alternatively, setting the ground too high for technology prowess in the business niche that apple has arced, it is increasingly difficult for new entrants to afford to buy the proprietary and copyright value that Apple will attach to its technologies, making technology licensing a powerful tool to ward off new entrants into the market. Unique product launch by the company catches the attention of the whole world making it difficult for new entrants to match such level of investment (Porter 2004, p51).
Apparently, Apple is the most valued company on the market today, than any other company’s in history, which makes such a muscle unmatchable by new comers. A loyal customer base that would take astronomical capital, technology and human resource costs, probably out of rich by prospective new comers, to be weathered to create market share to entrants. Entry barriers are therefore set at a very high ground for new entrants to venture (Mohta 2010, p10). Threat of substitute products is almost eliminated by the current performance by Apple’s products that offer a wide range of unique features that competitors cannot offer, due to massive investment in constant innovativeness. Perhaps what keeps Apple in business is its unmatched dedication to technology, which has been repaid by a growing loyal customer base around the world as the internet age unfolds before its market niche. Substitute products in comparison with Apple can be referred to be inferior and of a lower performance, which builds Apple’s case for continued innovation in subsequent product releases. Substitute producers are equally not as many as would be required to bring apple down on its knees from pressure emanating from possible competition from substitutes.
The bargaining power of suppliers has been taken care of at Apple as every supplier wants to be associated with the guaranteed returns projected by Apple’s performance into the coming years. Apple cannot struggle to find suppliers and shifting suppliers is possible at low costs due to its ability to attract such partnerships based on its market share and guaranteed returns. A number of suppliers can compete to supply Apple with processors such as IBM, Intel and Motorola, which have strategically established a partnership for long-term benefits in the Apple’s experience (Mohta 2010, p11). The bargaining power of customers has been reduced at Apple through quality and class association with its products, perhaps outperforming any electronic brand in the market. The value associated to the Apple products is high to an extent that customers cannot feel shortchanged for the products acquired from an Apple supplier. The undoubted massive following of happenings at Apple by a huge global customer base makes Apple to target numbers to its advantage in significantly reducing buyer bargaining potential. Peer to peer sharing platforms created by Apple’s designers enables the company to compel customers to stick to its products in an indirect way.
Limitations of the Porter’s Forces Model
Porter’s model would not make meaning to business environment with imperfect competition conditions, such as unequal treatment of investors by authorities, corruption and price fixing scandals. For instance, the recent revelations that certain British and American banks contributed to shaky global economic performance due to participation in unfair practices is evidence that competition was imperfect for other financial institutions. Barclays Bank and Standard Chartered banks in the recent months have attracted hefty fines in the US for taking part in malpractices, which would have made it impossible for Porter’s forces to work. The model in various ways makes assumptions that the market is a rigid and static platform where all the proposed forces act (Lever, 2008). In real interpretation of the market experiences by many companies, it is not possible to isolate just five forces for all cases of industrial operations.
Some experiences could have fewer than five forces to consider, whereas others would have several other factors to consider. In critical analysis of such a perspective on rigid assumption of the industry, every analyst thinking independently would be possible to formulate a set of forces that can be put into proportion with prevailing circumstances. In such a reality based approach, Porter’s concept of forces would be deemed corruptible and rigid (Arons and Waalewijn n.d., 1). Other critics of the model have a view that the model took a biased view of the industry, by only concentrating on the inside-out view of the industry (Lever, 2008). Resource based schools of thought would provide a different concept that that highlighting forces other than the resources that are accessible to the organization, from which opportunity can be transformed into returns.
Other forms of criticism highlight the modern direction taken by commercial ventures, with overlapping and blurring boundaries making the clear forces remotely achievable and inconceivable. For instance, the emerging concept of blue ocean freedom enabling investments to roam freely into unconventional grounds of idea diversification makes it too random and amorphous for any boundary to be set for the forces. For instance, the threat of new entrants in a business environment where businesses diversify to access new opportunities in grounds that have never been experimented on makes it difficult to define what new entry implies in a world of myriad brand new ventures. Alternatively, the concept of supplier’s bargaining power will continue to lose meaning in the new frontiers of business freedoms enabled by internet, information and constant innovativeness.
According to certain critics of the model, the level of focus for the industry is poorly set at the meso estimations, ignoring the micro and macro operations levels. The industry level consideration assumes the existence of other levels such as individual organization as well as the higher international arena with different forces to the organization (Lever, 2008). For instance, the model does not talk about the lowest internal and external factors as powerful and distinct forces to reckon with. According to other famous strategic models such as SWOT, simple details such as internal strengths on staff motivation can be highlighted as main forces. Alternatively, macro status consideration of the business environment such as globalization impacts on exchange rates and trade policies do not bother Porter enough for inclusion in his model (Bizmana 2010).
Mitigating
To mitigate the loose ends in the Porter’s model, it is perhaps advisable to consider introducing an integrated strategy system, which considers more than one model. Using more than one strategic approach in dealing with challenges facing the modern business is an insightful preparedness to tackle underperformance. An integrated system on business strategy will provide the solution to various concerns of weaknesses in Porter’s model (Burrell and Duan 1995). An expanded industry sector perspective for instance will expound on issues beyond the industry as witnessed under Porter’s forces. Incorporation of other models such as SWOT will enable managers to consider finer internal and external forces, and expand on limitations defined by the forces in modern paradigm such as the blue ocean strategy.
2. Core Competences
The concept of core competence in business strategy focuses on the identification of the areas where an organization has exemplary endowment and concentrating maximizing what can be achieved in a flawless scenario of those strengths. This in line with mitigating other impacts in areas with weaknesses facilitates a comprehensive probe into ways of holding onto unique abilities to bring about success to the organization. Most of core competence models highlight the identification of intangible assets that an organization has and bringing them out for opportunity development and nurturing (KPMG 1999, 11). Among the most important business functionalities that have facilitated a seamless introduction of competences into the organization to spur productivity is the human resource competence concept.
Competency models around individual strengths and potential in order to support organizational objectives, values and targets indicate that human potential is usually underutilized. Highlighting the potential that individuals possess in order to motivate and nurture them towards desired productivity outcomes proves to be a vital strategic approach that uses simple techniques to achieve and attain high levels of satisfaction and gratification. Building on the individual potential concept to recreate organizational culture supported by teams of confident and able minded players facilitates an overall sustainability in driving corporate culture (Harter, Hayes and Schmidt 2002, p269).
The three core competency enhancement touch on different approaches that bring out motivation and concentration in the assignment. Firstly, educational approach that targets improvement of personal skills and credentials assists in bridging the information gap in a culture that heavily relies on technical knowledge. Role outcomes and skills must be brought out in the employees’ perception towards corporate culture (Allpress, Cooper-Thomas and Markus 2005, p117). Every individual can be assisted through appropriate training to overcome the challenges posed by lack of knowledge in delivering better satisfaction and productivity outcome. Secondly, it is possible to turn the productivity attributes of an individual through empowering of psychological perceptions on organizational roles (Waddell 2002, p46).
Altering behavioral repertoires represented by attitudes, values and beliefs can facilitate attainment of best productivity trajectories among individuals and the entire organization. Self-images and associated social skills must always support the expected organizational performance. This is also attainable if the appropriate psychological environment and nurturing form part of the competency building functionality. Finally, business approach realignment of the competitive demands of the business environment using external information gathering system with deliberately designed core competence resources provides the appropriate approach for organizational productivity (Hanges et al. 2003, p844). Collective engineering of individual capabilities towards harmonization of business agenda guided by goals and objectives can be coined from business management of core competency.
Advantages and Case Study in Context
Emphasis on competencies ensures that quality is assured in products and services provided to customers, which increases customer loyalty and sustainable performance. In addition, the focus on individual behavioral performance enables generation of a broader and real picture of issues that define an individual’s life. Alternatively, core competence approach focuses on rewards for exemplary performance, which acts as a motivation for underperforming individuals, bringing outcomes that would never have been realized without such attention. Apparently, core competence focuses on other talents and potential management considerations that can assist in innovation and diversification of production targets (CLC 2004, p2).
The basic business motivation is improvement of the quality of stakeholder’s life in terms of various achievements, including earning a living and prestige. According to various motivational theories, human satisfaction determines the level of concentration and dedication in delivered duties thereby influencing the personal and organizational productivity outcomes. It therefore implies that the improvement of the individual’s perceptions of satisfaction and motivation in the assignments allocated at the organization translates to positive outcomes in organizational performance (Ash et al. 2000, p722). Modern human resource insights underscore the individual satisfaction theories in order to improve the organizational productivity variables dependent on employee input. As a strategic tool to reorganize performance opportunities into real fortunes, the sharpening of potential and competence among employees facilitates the identification of the building blocks for appropriate organizational competence.
An example of core competency approach in context is perhaps in the health care industry where the delivery of healthcare service staff determines the quality and performance delivered by health facilities such as Aurora Health Care (AHC) (Brookings Institution 2012, p4). Although the facility operates by serving Eastern Wisconsin largely in an NGO basis, a few business formats make its core operations to fit in a commercial setting worth a highlight of the core competence strategy. Since its strategic plan is based on a target of serving increasing numbers of patients, quality remains a vital decision for observation of its status as a leading health care facility in the country. A wide range of service delivery functionalities at the facilities owned by Aurora Health Care extend from specialty centers, primary health care as well as several pharmaceutical discharging units. Under an integrated system, taking care of all the services handled by different staff, core competencies forms the central strategy for the facility (Aurora, 2012).
Physician engagement by the facility aimed at provoking their leadership potential using various resource platforms facilitates the facility’s agenda of bringing the best contribution of the pharmacists on a peer platform. The communication facilitation targeted by the facility assists in sharpening clinical expertise and raising credibility confidence across the professional profiles available at the institution. Increasing operational effectiveness is emphasized and nurtured, through the appropriate networking, which builds on communication skills gained during interactions between the clinical and non-clinical staff. Formal training and facilitation for the improvement of the necessary clinical, management and leadership skills occurs at AHC in order to generate the best environment for core competence identified by building on a fine network among the staff.
Different leadership programs with a definite structure fully supported and funded by the institution enables promotional consideration of staff into various levels of mainstream management. For instance, a number of director positions are reserved to be filled by the members of the clinical staff to increase confidence among the various classes of staff (Eliot, 2012). Relevant information and tools needed for different leadership tasks ensures that the main and sensitive issues on the facility are relayed to the competently composed team of medical experts. Review of personal performance and peer-to-peer appraisal ensures that the networking concept brings out motivational benefits where members encourage each other to deliver quality service.
Disadvantages and their Mitigating
In terms of limitations of using core competencies in management, reliance on competencies is direct and less to related to real contribution to achievement of objectives (Salaman 2004, p58). In order to mitigate this weakness, a constant and thorough assessment of competence as well as the direct contribution that it makes to realization of objectives can be adopted. Additionally, it may be difficult to roll out a competence-based strategy in an organization as its relevance to business processes, clarity of its mechanism, its determination and definition and explaining new performance standards to employees who don’t like direct attention may affect successful application of the strategy. In order to ensure that the impact of such factors is not significant on production variables, introduction of chances in phases, perhaps one department at a time may enable a smooth transition. Subsequently, clear programs with simplified and pleasantly explained procedures may assist in reducing resistance among the employees (CLC 2004, p2). Equally, simplified competence and performance appraisal designs alongside a reward program must act as a reference motivation for excellent performance among every employee.
References
Allpress, K. N., Cooper-Thomas, H. D., Markus, L. H., (2005) Confounded by competencies? An evaluation of the evaluation and use of competency models. Newzealand Journal of Psychology, vol. 34, no. 2, pp. 117-126.
Aron, H. Walewijn, P. (n.d.) A knowledge base representing Porter’s Five Forces Model. [Online] Available from <http://repub.eur.nl/res/pub/753/eur-few-cs-99-02.pdf> [9 October, 2012].
Ash, R. A., Battista, M. A., Carr, L., Eyde, L. D., Hesketh, B., Kehoe, J., Pearlman, K., Prien, E. P., Sanchez, J. I. & Shippmann, J. S., (2000) The practice of competency modeling. Personnel Psychology, vol. 53, pp.703-740.
Aurora Health Care. About us. [Online] Available from <http://www.aurorahealth care.org/aboutus/news-media-center/ourorganization.aspx.> [Accessed 9 October, 2012].
Bizmana. Porters 5-forces revisited. [Online] Available from < pdfcast.org/images/s/70/porters-5-forces-revisited.jpg> [Accessed 9 October 2012].
Brookings Institution (2012) Moving toward bundled payments- Physician leadership as a core competency: A case study of Aurora Health care. [Online] Available from <http://www.brookings.edu/~/media/centers/health/final_case%20study%20for%20aurora%20health%20care.pdf> [Accessed 9 October 2012].
Burrell P., & Duan Y., (1995) A hybrid system for strategic marketing planning. Marketing Intelligence & Planning, vol. 13, no.11.
CIMA. (2007) Strategic analysis tools. London, UK: CIMA
CLC. (2004) The use of competencies in performance management programs. [Online] Available from < http://isites.harvard.edu/fs/docs/icb.topic608877.files/Class%20Three%20Reading/CLC_The_Use_of_Competencies_in_Performance_Management_Programs.pdf> [Accessed 10 October, 2012].
Eliot, J. H., (2011) Aurora Health Care study. [Online] Available from <www.greatboards.org> [Accessed 10 October 2012].
Hanges, P. J., Salvaggio, A. N. Schneider, B., & Smith, D. B., (2003) Which comes first: Employee attitudes or organizational financial and market performance? Journal of Applied Psychology, vol. 88, no. 5, pp.836-851.
Harter, J. K., Hayes, T. L., & Schmidt, F. L., (2002) Business unit level relationship between employee satisfaction, employee engagement, and business outcomes: A meta-analysis. Journal of Applied Psychology, vol. 97, no. 2, pp.268-279.
KPMG. (1999) A core competency approach to valuing intangible assets. http://www.oecd.org/industry/industryandglobalisation/1947847.pdf> [Accessed 9 October 2012].
Lever, R. Weakness of Porter’s Five Forces Model. [Online] Available from < http://suite101.com/article/weakness-of-porters-five-forces-model-a86222> [Accessed 9 October 2012].
Middleton, J. (2003) The ultimate strategy library: the 50 most influential strategic ideas of all time. Oxford, UK: Capstone.
Mohta, J. (2010) Porter’s 5 Forces Model case: Apple Inc. [Online] Available from <> [ Accessed 9 October, 2012].
Porter, M. E. (2004) Competitive strategy: techniques for analyzing industries and competitors. New York/ London: Free Press.
Salaman, G. (2004) Competences of managers, competences of leaders. In J. Storey (ed.) Leadership in organizations: Current issues and key trends. London, UK: Routledge.
Waddell, S. (2002) Core competences: A key force in business-government-civil society collaborations. JJC, (2002 Autim) pp.43-56.
Wikiwealth (2012) Apple Inc.- Five Forces analysis. [Online] Available from < http://www.wikiwealth.com/five-forces:apple-inc> [Accessed 9 October, 2012].
CRiTICAL ANALYSIS OF LAST CALL the Rise and Fall of Prohibition.
CRiTICAL ANALYSIS OF LAST CALL: the Rise and Fall of Prohibition.
A brilliant, authoritative and fascinating book about of America’s 14 year period, from 1920-1933, when the U.S amendment of the constitution to prohibit one of the most favourite pastimes: drinking alcohol. The’ last call’ a book written by Daniel Okrent gives a definition of the rise and fall of the alcohol prohibition. The book contains the contains the effects of alcohol,both for having it and not having it, and the facts about it.Daniel Okrent was the first public editor of the New York times, he is a qualified writer since he has written four books in the past. The book gives the impact of the prohibition in the American life during that period.
On January 16, 1920 the day before prohibition became the law of the land, the “dry’s” were supremely optimistic about the coming days. From this time henceforth natives’ bondage to alcohol was broken. “The reign of tears is over,” evangelist Billy Sunday told a revival meeting in Norfolk, Va. “Men will walk upright now, women will smile, and the children will laugh. Hell will be forever for rent.”
The 18th amendment didn’t so much as change the country’s culture of drinking. The “wets” had their liquor and the “dry’s” had their law. Prohibition attributed to Andrew J, Volsteadn who facilitated the 18th amendment of the constitution has most of the laws weaknesses and omissions attributed to him. Introduced in May 27, 1919 the bill was passed after a three month debate.” No person shall manufacture, distribute, import, export alcohol” the act replaced all dry legislative measures in force in the various states. The Volstead act though did prohibit the sale of various brands of alcohol, private possession of alcohol and consumption wasn’t made illegal. It faced a lot of hostility from the most of Americans who argued despite the negative effects it was deemed as denying people their rights. Anti-prohibitionist criticized the ban of liquor as an intrusion of mainly rural Protestant ideals on a central aspect of immigrant, catholic everyday life. Lack of an agreement led to the growth of criminal organisations such as the American mafia and generated corruption within politicians in the police forces. The book shows how most of the great leaders were also dependent on alcohol. President Wilson, weakened by the losing fight to keep America within the league of Nations, backed and supported the amendment of the bill (Behr,1996).
While the act was successful in reducing the amount of alcohol consumed it led to the widespread of underground criminal activities Many were astonished and disenchanted with the rise of spectacular gangland crimes (such as Chicago’s St.Valentines massacre), when prohibition was supposed to reduce crime. Prohibition lost its advocates one by one, while the wet opposition talked of personal liberty, new tax revenues from legal beer and liquor, and the scourge of organized crime. The prohibition became a great controversy since it was used by physicians for medication purposes
The last call mainly shows or brings out on the politics of the prohibition. Even in the late 1918s most of the “wets” considered the law as a “dead letter”. Enforced temperance, after all, was a highly unpopular concept in many.
quarters, particularly among city dwellers, immigrants, Catholics, Jews, blacks and an awful lot of native-born white Protestant males. Okrent shows how the dry forces — led by powerful interest groups like the Anti-Saloon League — overcame this stiff opposition, cobbling together an unlikely coalition of rural populists, urban progressives, women and nativists (even the KKK), all of whom had their own peculiar reasons for wanting to see the demise of legal alcohol. In the end, aided by a ratification process that gave disproportionate weight to voters in rural states, the “dry’s” managed to push their amendment through — to the amazement of wets nationwide. The end of all this came when president Roosevelt redefine the law to by legalizing selling of liquor not more than 3.2% alcohol ( Towne , 1923).
Through it all Americans went to greater lengths to smuggle, conceal, and to imbibe their favourite drink. Last call is peopled with vividly astonishing characters: Susan B. Anthony and Billy Sunday, William Jennings Bryan and bootlegger Sam Bronfman, Pierre S. du Pont and H. L. Mencken, Meyer Lansky and the incredible—if long-forgotten—federal official Mabel Walker Willebrandt, who throughout the twenties was the most powerful woman in the country. The book also includes Manhattan speakeasies, where relations between sexes were overturned forever. California vineyards producing “sacramental” wine, New England fishing groups abandoned their fishing activities for more profitable rum- running business. In Washington , the congress itself, congressmen who had voted for prohibition drank openly.
The author created much awareness on the effects of alcohol the people. The author uses ailments to emphasize on the negative side of alcohol ( Towne , 1923). Another lethal substance that was often substituted for alcohol was “canned heat”. Forced through a handkerchief, it created a rough liquor substitute. However, the result was poisonous, though not often lethal. Many of those who were poisoned as a result united to sue the government for passing of the prohibition law. One of the foremost physicians Benjamin rush termed drunkenness as a disease both physically and psychologically and believed more in moderation than prohibition. Although it was highly controversial, Prohibition was widely supported by diverse groups. Progressives believed that it would improve society as generally did women, southerners, those living in rural areas and African-Americans. There were a few exceptions such as the Woman’s Organization for Prohibition Reform who fought against it .During this period the government had a hard time keeping up with the rumrunners and bootleggers. In Boston crowd became furious and beat up a coast guard. In 1929 the U.S coast guard chased down an illegal rumrunner and when he refused to stop officers opened fire and killed him. Warning tremors of plummeting of the economy came in October 1929 when the price of wheat went down. Americans were plunged to a depression they had never known. Unemployment figures also started to raise in 1931 the level of the unemployed out of the total working population was 16 percent, following year it rose to 24 percent. Banks failures also scared the stable population hundreds of banks went down increasing the depression. Alcohol was still a major source of revenue for the government and its prohibition lead to the dwindling of the American economy. Americans looked up to president Hoover who kept normal routine hoping to build confidence in recovery.( Bennett, 2007). Ratification ended with the repealing of the eighteenth amendment by ratification of the twenty first amendment on December,5,1933.
Daniel Okrent also tries to show why women were so against sale of alcohol. They complained most of their husbands behaviours lead to the breaking up of many families. They became irresponsible and ignored their responsibilities. Drunk driving lead to the death of many travellers, increased cost lead to bankruptcy, crime among other effects( Kobler, 1973)high level of immorality in the population increased due the drunkenness levels of rape cases increased most of the young men became unproductive on the other hand contrary to the lack of employment due to lack of jobs, in this case it reduced due to lack of responsible skilled manpower. As prohibition became more unpopular repeal became more anticipated economic emergency being the top most prioritized factor against the act. Poor enforcement of the law was also another factor that lead to the failure of the act. Additionally, enforcement of the 18th amendment lacked centralized authority and many attempts to impose prohibitionist laws were deterred due to the lack of transparency between federal and state authorities Despite the fall of The prohibit, a safer way of drinking, and maintenance of the economy balance was developed as shown in “last call” the economy so as its people grew stronger though they still didn’t learn. After the amendment alcohol was sold but not in all countries. But still some states still continued embracing the prohibition law
Cited from:
Behr, E. (1996). Prohibition: thirteen years that changed America. New York: Arcade Pub.
Bennett, W.(2007). America: The Last Best Hope, Volume 1.New York: Thomas Nelson Inc.
Kobler, J.(1973).Ardent spirits: the rise and fall of prohibition. New York: G.P Putnam’ sons.
Towne ,C.H.(1923). The rise and fall of prohibition:The human side of the eighteenth amendment and the Volstead act have done to the United States. New York: Macmillan.co
