Expert Manufacturing Advice tailored for step-by-step implementation in the workplace. Small Manufacturers, Machine Shops and CAD Engineers improve and thrive with our hands-on help. Value Engineering Engineering Design for Manufacture and Assembly: Refining the Design and Gearing up for Production Essential Product Development for Engineers Value Analysis
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Having been involved in the detail design of the product, the next stage is to gear up for production. This can be seen as two phases:
Resources can be assigned once these considerations have been clarified. As mentioned previously, developing and launching new products is a commercially risky business. To minimise the risk, small manufacturers can organise themselves to ensure the process runs as smoothly as possible by following some of the advice provided below.
Value Engineering and Value Analysis
Value Engineering (VE) is basically about increasing the value of a new product, either by improving its function or reducing its cost (or both). VE is a systematic process. It is applied to new designs and can deliver significant savings when considered from the point of view of manufacturing the product throughout the whole of its planned life. Value Analysis (VA) is a similar process, but for existing products, for example during a product redesign project.
VE and VA methods and their application are covered in greater depth in the ‘Product Development Costings’ section. VA and VE tools include Design for Manufacture and Assembly (DFMA) techniques, which are also geared to delivering cost savings. These tools and techniques can be applied to components, assemblies or whole products.
Design for Manufacture and Assembly (DFMA):
Practical Design Engineering Guidelines to Reduce Costs and Improve Function
The Importance of Knowing Component Costs
All the individual components that make-up an assembly should have costs assigned to them. Whilst performing value analysis, it is important these costs are known. If they are unknown, obtain quotes from suppliers for manufactured parts (consider the number of components you’ll eventually order, as well as 1-offs as part of this).
In this way components can be targeted for cost reduction, either by re-negotiating prices with suppliers, sourcing cheaper substitute (bought-out) parts from alternative suppliers or redesigning manufactured parts so they are cheaper.
A Bill of Materials (BOM) for each assembly enables all parts to be listed. To track costs, a good idea is to add another column to the BOM and insert costs for each component. Assembly and total product costs can be quickly calculated and visualised in this way. If you are unsure what the costs are, consider getting suppliers to assign costs to BOMs for your assemblies, breaking them down component by component.
Preparing for Value Engineering
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Actually Undertaking Value Engineering
Value Analysis Explained
Back to Product Development Essentials
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