03-09-2014, 10:05 PM
Bummer! I mounted the pulley end of the spindle in the MT3 collet on the lathe, then tried to slide the steady onto the bearing carrier.
The through-hole is not centred on the lathe spindle.
Plan B. I clamped the carrier to the compound, with appropriate shims. That held it solidly while I touched up the MT2 socket with the tapered reamer.
Still reading 0.005" TIR in the test setup, but a ground centre in the socket measures 0.003". It's important to note that this spindle is for the grinding wheel, not for the toolholder. If it's off a couple of thou, it will still work, more like a flycutter. The cup wheel can be trued up, but would have to be repeated each time the wheel is remounted.
The through-hole is not centred on the lathe spindle.
Plan B. I clamped the carrier to the compound, with appropriate shims. That held it solidly while I touched up the MT2 socket with the tapered reamer.
Still reading 0.005" TIR in the test setup, but a ground centre in the socket measures 0.003". It's important to note that this spindle is for the grinding wheel, not for the toolholder. If it's off a couple of thou, it will still work, more like a flycutter. The cup wheel can be trued up, but would have to be repeated each time the wheel is remounted.
Mike
If you can't get one, make one.
Hawkeye, proud to be a member of MetalworkingFun Forum since Jan 2013.
If you can't get one, make one.
Hawkeye, proud to be a member of MetalworkingFun Forum since Jan 2013.