Depending on the end use of the product, tight tolerances may not be required.
Many consumer-type products do not require anything more than standard tolerance control because the severity of failure is low.
Many designers automatically set a tolerance in the CAD drafting software and all dimensions are toleranced to that number, when in reality the product may not need such a tight tolerance.
Designers need to understand that tighter tolerances may equate to increased production costs and development costs—therefore tolerances should be as generous as possible in the design phase to keep costs down, unless they are required for proper fit or function of the part/assembly. Achieving tight tolerance may be a more expensive process, so if it not required, loosen up the tolerance a bit to reduce production costs.
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Many consumer-type products do not require anything more than standard tolerance control because the severity of failure is low.
Many designers automatically set a tolerance in the CAD drafting software and all dimensions are toleranced to that number, when in reality the product may not need such a tight tolerance.
Designers need to understand that tighter tolerances may equate to increased production costs and development costs—therefore tolerances should be as generous as possible in the design phase to keep costs down, unless they are required for proper fit or function of the part/assembly. Achieving tight tolerance may be a more expensive process, so if it not required, loosen up the tolerance a bit to reduce production costs.
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