Product Design Considerations
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چکیده
1) Uniform Wall Thickness, Coring & Mass Reduction since injection molding is employed as the shape forming process step, part designs can avoid the limitations of traditional metalworking processes. For example, machining involves the removal of material from a solid shape to get to the desired final component design. As a result, design engineers are limited to design decisions that can be readily produced on an economical basis and those which do not violate the design limitations of machining. The benefits of removing excess material for reduced part mass are generally not considered as this design approach would add incremental machining costs. In the case with plastic injection molding, design engineers have the freedom of starting with a "clean slate", and building up their component geometry by placing material only where it is needed for function and strength. This serves several benefits for the process and the customer. Any opportunity to limit the amount of material required in a component helps minimize the final part cost. Additionally, maintaining a uniform wall thickness throughout a component reduces the likelihood of molding process flaws, thus improving the overall part quality, cosmetics, and generally improves the resulting dimensional tolerances that the process can provide.
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