paulymorph
Plastic
- Joined
- Feb 28, 2020
Here's a video I put together to explain the problem. The high level written description is as follows:
Wells-Index spindle runout problem - YouTube
The TIR on the outside lower body of spindle is reading .002-.003 runout
The inside of the R8 Taper is also reading the same .002-.003 runout. High points and low points are the same on the inside and out.
Above the taper inside the spindle, the TIR is consistent at .0002-.0003 (2-3 tenths). This is roughly in spec for the machine.
The taper isn't making uniform contact around the circumference of the collet.
I'm considering attempting to setup and grind the taper similar to how Shadon HKW did in his YT video.
R 8 Spindle regrind - YouTube
I did not crash the spindle. I've had the machine just over a year and as far as I can tell, it's been this way since I got it. It's almost as if the spindle was manually ground previously and was ground off center by the 2-3 thou i'm seeing now. And potentially the outer body of the spindle was reground at the same time which could be why the runout is the same on the inside of the taper and the outside of the body at the same spots.
Any thoughts or suggestions welcome.
Wells-Index spindle runout problem - YouTube
The TIR on the outside lower body of spindle is reading .002-.003 runout
The inside of the R8 Taper is also reading the same .002-.003 runout. High points and low points are the same on the inside and out.
Above the taper inside the spindle, the TIR is consistent at .0002-.0003 (2-3 tenths). This is roughly in spec for the machine.
The taper isn't making uniform contact around the circumference of the collet.
I'm considering attempting to setup and grind the taper similar to how Shadon HKW did in his YT video.
R 8 Spindle regrind - YouTube
I did not crash the spindle. I've had the machine just over a year and as far as I can tell, it's been this way since I got it. It's almost as if the spindle was manually ground previously and was ground off center by the 2-3 thou i'm seeing now. And potentially the outer body of the spindle was reground at the same time which could be why the runout is the same on the inside of the taper and the outside of the body at the same spots.
Any thoughts or suggestions welcome.
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