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Marcus Wolschon

over 7 years

I guess in the end I'll simply buy a commercial one http://www.usovo.de/shop/CNC-Maschinen-Zubehoer/CNC-Maschinen-Zubehoer/Zubehoer-CNC-Fraesmaschinen/Sensoren/3D-Taster::542.html 160eur +tax is perfectly acceptable to get a better result then a DIY one.

mpatoulachik

over 7 years

Thanks! I chose an old endmill as a stylus since I have a lot of broken/dull ones and they are stiff as hell... My guess regarding accuracy would be to get some gold-plated steel balls and rods to improve electrical contact and also make the parts out of machined metal instead of flimsy printed plastic. As it is, the accuracy of the probe is at least as good as the one of my mill. When it comes to fastening, this design is for machines with a 43mm spindle collet, so you put the probe instead of the spindle. To put it in a regular collet (ER11 or whatever), I suggest this variant: http://www.thingiverse.com/thing:507156 (but I would definitely make the shank from metal if you want any kind of repeatability).

Marcus Wolschon

over 7 years

I very much apreciate the technical drawings. Great work! Great idea on adusting the centricity of of the probe shaft with the 3 bolts. I guess the accuracy could be improved by a larger diameter and longer probe shaft?

Marcus Wolschon

over 7 years

Do you have some photos of your finished design? How do you attach it to the spindle? I see nothing that could be mounted into an ER11 collet.

Touch probe for measuring and digitizing

By mpatoulachik

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