Problem with dimensions, using fusion 360 uccnc

Brad Larkin · 2016-12-30T02:06:14Z

Hi guys, hopefully I've posted in the right section. I have run into a strange problem in that I am getting incorrect dimensions after milling. I've added a couple of pictures to show. the boxes should be 50mm outer width and 40mm leaving a 5mm pocketed area and clearly they are not. The circle and ring should be 10mm and 15mm diameter but they are 14mm and 21mm. Pocketed area on the ring should be 5mm, it's about 3mm. Depth is also out, the ring should be 2mm deep but it is 3mm. The circle should be 4mm but is 6mm. The strange thing is I also did a contour cut with tabs (not pictured) and the tab height is actually correct. The other strange thing is I had recently changed back to windows 7 and reinstalled all associated software but before this I had no problem with dimensions. The problem is consistent though as I cut 4 rectangle pieces and they are all exactly the same, wrong size as per drawing but no discrepancy between them. The alloy ring pictured was cut prior to the reinstall and is accurate per drawing. I noticed the Z dimension when cutting was correct, which could indicate a tool length error input from me but the fact that I was using the same tool from the library from previous successful cuts rules this out. I have absolutely no idea what is going on nor where to start to fix. Any help is greatly appreciated.

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Roy Rathner

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Hi,

the Alloy AlMg4.5Mn0.7 should be very good for milling.
This is ISO 5083 grade.

MfG
Roy

SC 600/2; SolidWorks; ~~UCCnC und UC100~~; EstlCam und Arduino Steuerung; KRESS 800kfme;

Veröffentlicht : 02/03/2017 2:02 p.m.

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