Members Silverd Posted June 16, 2019 Members Report Posted June 16, 2019 I recently helped the good folks at Landis Machine Co by rebuilding a dozen main cams used in the Landis 16 harness stitching machine. The problem is these cams are a wear item. Most 16s have been used in an industrial or commercial setting since the 50s or 60s and this cam is worn out. There are 3 big barrel cams in each machine but this one is the only one that typically shows signs of wear and only the face groove of this cam. The repair started by having the face cam channel digitized. Then the cam path was mapped and a CNC G code program generated. Using a feature called cutter compensation, the CNC machine will cut a wider path based on how much wear is measured on each cam. A fixture was made to hold the cams in the vise of the CNC milling machine then each cam was machined untill clean-up of the worn out cam channel was achieved. Then based on the new channel width, a custom cam roller was made and later heat treated. Replacement of the cam is simple and most owners can do the work. Contact me for more information. Silverd Quote
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