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Prototype MIM Case Study – Lock Pawl. Application : Remote electronic locking system Competing Technology – Plastic (MIM was desired by customer marketing for higher strength at higher temperatures) Materia l – MIM 316L, part weight 0.8 grams. MIM Case Study – Lock Pawl.

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Prototype mim case study lock pawl
Prototype MIM Case Study – Lock Pawl

Application: Remote electronic locking system

Competing Technology – Plastic (MIM was desired by customer marketing for higher strength at higher temperatures)

Material – MIM 316L, part weight 0.8 grams


Mim case study lock pawl
MIM Case Study – Lock Pawl

Straightforward design, no features created by slides.

Customer desired low cost prototype, how to do it?


Mim case study lock pawl1
MIM Case Study – Lock Pawl

For prototyping, create a square pocket in an existing mold base to fit a hand-load insert for prototyping.

Tooling approach suitable for low-volume usage only.


Prototype mim case study lock pawl

MIM Case Study – Lock Pawl

Part features as they will be tooled in production can be created in the blocks.

Non-traditional materials (low carbon steel, brass, aluminum) are all possible tool materials since only low volumes will be produced.


Prototype mim case study lock pawl

MIM Case Study – Lock Pawl

No ejectors make tooling simpler.

Gate run to the center of the block, then dropped to customer requested location.


Prototype mim case study lock pawl

MIM Case Study – Lock Pawl

Part is easily accessible after separating the cavity halves, making for easy part removal.


Lock pawl conclusion
Lock Pawl Conclusion

  • Prototyping approach a success

    • Leadtime to tooling was short & relatively inexpensive

    • The prototypes were created almost exactly the same way the production parts will be produced

    • Parts passed testing with no issues