Design for Manufacturing – Misalignment Risk
A medical client's design included two housings joined by a compression fit.
Challenge
Components might join in the wrong orientation causing the product to no longer function.
Solution and Results
The team introduced features to prevent misalignment during assembly.
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Design for Manufacturing – Liquid Seal
A pharmaceutical client with a presaturated swab applicator with a liquid seal.
Challenge
The luer lock enlarged the part to an unacceptable width.
Solution and Results
The design for manufacturing process adjusted the design reduce width and maintain a liquid seal.
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Case Study: Capability of Elastomers
Diagnostics OEM
Challenge
A lubricious additive within an elastomer left a residue that compromised a liquid seal.
Solution and Results
The Natech Engineers tested two materials to confirm capability and statistical process control.
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Quality by Design – Snap Fit Design
A Diagnostics Client
Challenge
A snap fit failed a usability test, but the design of the hook was locked.
Solution and Results
The Natech Engineers adjusted the design of the mating component to optimize performance and reduce the economic impact.
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Design for Assembly – Tolerance Stack Analysis
A Diagnostics Client
Challenge
Four of the five component designs had already been defined in relative isolation and were already locked, but tolerances allowed for potential leakage risk during assembly.
Solution and Results
The Natech Engineers performed a tolerance stack analysis and refined the specifications to address the assembly risks.
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Continual Improvement with Design of Experiments
A client transferred a tool for a long component with a tolerance of 0.1%.
Challenge
The mold had been designed and build without considering part shrinkage.
Solution and Results
The Natech engineers were able to employ a design of experiments to adjust the process rather than adjust the mold.
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