The design specifications of any device are subject to many factors, the most important cost of design versus quality of performance.
When designing, whichever is more important: manufacturing cost or quality performance?
Think it depends on the business / management strategy. E.g. if the strategy is to achieve low cost leadership, then design based on lowest manufacturing cost can be considered. If the strategy is to differentiate various products for different customers, perhaps design based on qualify performance can be adopted.
In the event designing is independent of business / management strategy & there are abundance of resources, we can go for quality performance - because in long run, good quality can reduce manufacturing cost or even total cost of ownership.
together, quality and cost, because all of the manufacturing companies looking for high quality with low cost, and finally, depended on what is available.
There are different kind of manufacturing systems and it can be classified according to the process configuration. This configuration depend on the manufacturing strategy.
Therefore there is not a unique set of metrics for all kind of process because that depend on the system goals.
To answer your question first we have to discuss about two factors. 1) Is it comes under ground equipment or 2) flying equipment.
If it is flight related equipment, then its very important to consider about quality because we design flight equipment with a Margin of safety of 0.2 to 0.5. If it fails, then many lives come to an end which are more valuable than the mfg cost.
If it comes under ground equipment, we do design the same with a margin of safety of 2 to 3 (for mechanical structures) 5-6 (for civil structures). in this contest, people do consider manufacturing cost by maintaining reasonable quality.
I think, this answer has fulfilled your question as per my knowledge.
Both are important, Primo, you have to design to meet volume, specs and lead time for production. Secondo, you design for product/equipment/process configuration to meet the conceptual design and the ideation. Finally, you make adjustments based on your budget constraint, your performance will consider two thing, time for initial production and process validation and a product within your real cost vs budget (variability specified). For a device you can come up with a prototype, this is what prototypes are all about.
Be aware that the above is a general approach, the methods you apply to your project is up to you (i.e., Risk analysis, Sensitivity analysis, simulation among others).
As for the size of an organization which is determined by the size of the market, in your case the manufacturing cost is determined by the complexity of your devise/plant/process or whatever you have in mind. Quality is an intrinsic part of your device, there is no such cost for that, but just the performance you want to achieve.
Primary emphasis should obviously be given to quality first while designing; cost can be the secondary factor to consider. Most of the customers always go for good quality product; if the quality is given consideration it will create a good market. Customer now a days are very sensitive, before purchasing any stuff they do a survey about the quality first. Its all about the expertise & true skill of designer to fit the good quality & efficiency within the best possible boundaries.
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