Knee Surgery Component

This project demonstrates our ability to form unique geometric shapes, create tight corner radii, and meet critical surface finish requirements for the very demanding medical device industry. We were able to accomplish intricate details using the wire EDM machining method, which enabled us to cut materials that other machinery would not have been able to handle. The stainless steel knee component was completed using our 5-axis CNC milling, micro hole burning, and 4-axis wire EDM, which enabled our knowledgeable to fabricate a thin-walled part from 17-4 PH stainless steel. It featured overall dimensions of 4.5276″ in length, 0.7480″ in width, and 0.6496″ in height, and successfully achieved dimensional tolerances of ± 0.025″ and angular tolerances ± 0.5°, which were confirmed by rigorous dimensional and visual inspection processes. Additional operations called for heat treating and dry blasting to a uniform 32 RMS finish.

Technical Specifications

Housing Cutter Lapidus Form Guide Left & Right
Guide used to do precise angle cuts on bone
Capabilities Applied/Processes
This is to provide precise custom fit
Equipment Used to Manufacture Part
5-axis Mill, Hole burner, 4-axis Wire EDM
Tightest Tolerances
Holding +/-.0003 on size and location
Material Used
Stainless Steel and Titanium
Material Finish
16 - 32 micro inch depending feature
In process testing/ inspecting performed
Use CMM 4-axis probe & vision system
Industry for Use
100, 1000, 5000, 10000
Delivery/Turnaround Time
Tyipcally 6 - 8 weeks
Delivery Location
Mpls., MN
Standards Met
ISO 9001: 2015 and ISO 13485:2016

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