22-09-2012, 04:09 PM
DFMA principles and guidelines are not suitable for low volume production
DFMA principles and guidelines.pdf (Size: 2.11 MB / Downloads: 73)
Introduction:
DFMA elaborates the meaning of Design for manufacturing and assembly. These are generally applied in the need of easy manufacturing and reducing time as well as reducing cost, general things are parts machined to be made easily, and assembling easily with less effort. And it is very much useful in reducing product cost and improves quality and serviceability which gives a competitive edge to stand in the market.[1] Main factors DFMA depends on
Cost,
Quality,
Serviceability and
Time to market
Initiations on the debate topic-
Case study SUPPORTS the topic
From this traditional operations production process and assembly techniques were making more time to finish the product or part, so if we use those guidelines it can be reduces the time and method of assembly, continuous work can avoid mistakes and reduces the teaching time to workers. So for this method requires more investment and time for setup and it helps for continuous production or repeated part manufacturing. And the case study supports the topic “DFMA principles and guidelines are not suitable for low volume production”.
In aerospace sector:
For example in aerospace sector manufacturing of part will be less so they cannot able to follow those principles such as reducing cost and time, production set up because for making a less parts or single part there is no need available for DFMA. From this method they introduce without investment in tooling effect, generally they use to produce single component so they use to machine it in CNC machines, after completion of it they will make another product with another dimension so making continuous and fast doing methods are not possible so that DFMA guidelines are not possible to achieve it.
Tooling sector:
In this process lines assembling is important because final product are to be shipped if not in good condition, even though casting plays a vital role for manufacturing of single components for the use of medical field, so they use to do with turret punch machines for some components or better is casting. In general those order are small amount in nature according to this reducing time and improving part is not possible and also DFMA also not yet. Tooling can done in low volume production method thus less production leads generally get higher accuracy then mass production because time taken to produce is more. In some medical field only small amount of medical utensils were needed so they cannot able to apply those thing in their production steps, vacuum casting are their best method instead of injection molding, because of easier and less cost method.
Conclusion:
From the debate topic and above examples it clearly shows “DFMA principles and guidelines are not suitable for low volume production”. Production method may change and too development but everything is not in favors to low volume production method. Thus from above while using low production our motto to be less component with more accuracy this can be achieved but it cannot be followed to next if so it happens only cost and time can be minimized. If it happens it is called as high volume production. Assembly line, tooling cost for components manufacturing and inspection tools cost etc are making the DFMA guidelines to follow the production, but this kind cannot happens in low volume production method. So it does not follow DFMA principles.