Limited Affordable Low-Volume Manufacturing Summary of a Workshop (2014) / Chapter Skim
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Workshop Themes
Workshop Themes
Pages 4-11
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From page 4... ...
At various points in the workshop, participants noted that variable-demand manufacturing and high-mix manufacturing should be included in the definition of low-volume manufacturing. The discussion on how to define low volume began in the presentation by Dr.
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He explained that QRM is a strategy that introduces specific techniques to reduce total lead time, not just eliminate direct cost. He said that QRM concepts apply throughout the enterprise, with most of the improvement in time savings among up-front office applications.
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Workshop participants also noted that when the power shifts to the raw materials side, there can be bottlenecks or chokeholds from the material 2Companies such as Protomold make high-quality prototypes and returns parts in as few as 3 days for relatively little cost. There are also overseas companies, such as Model Solution, in Korea, that are very competitive.
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Gupta's presentation focused heavily on modeling and simulation tools to benefit low-volume manufacturing through very large cost reductions, lowered design cycle times, improved efficiency, and enhanced performance. To enhance access to the high-performance computing required for manufacturing modeling and simulation, she emphasized the need for the following: 3Here additive manufacturing refers to manufacturing processes that add material rather than remove material to produce the final item.
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Participants discussed how the use of COTS parts could improve efficiency and decrease costs, though there are barriers to their inclusion. The presentation of David Johnson, Wright Patterson Air Force Base, focused on improving the reliability of electronics parts.
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He also mentioned using generic COTS parts and customizing them as necessary as a means to minimize overall costs. PROCESS QUALIFICATION AND PRODUCT CERTIFICATION Process qualification and part certification were frequently discussed as constraints to low-volume manufacturing.
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• Additive manufacturing enables a new step in globalization, which is local ized production within the larger global context. One participant asked if this globalization step could occur without additive manufacturing.
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Dr. Schafrik discussed many issues in additive manufacturing that still must be addressed, including • Surface finish, • Modeling tools, • Diversifying input raw materials, • Improving feeding mechanisms, • Developing more consistent energy sources, • Developing industry standards, including common terminology, • Increased sophistication of additive process equipment, • Improving design practices to take advantage of direct digital manufactur ing capabilities, • Development of the capacity to produce more complex shapes, and • Inspection and qualification techniques.
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