Tool Post Grinder

**rossbotics** · Jan 10, 2016, 02:51 PM

I built this little grinder mainly for truing the jaws on my lathe and lathe centers, Maybe some light O.D. & I.D. grinding too.

The grinder has two interchangeable spindles, One for I.D. work which holds mounted stones with 1/4" shanks, The O.D. spindle supports up to a 4" O.D. tool post grinding wheel up to 1/2" wide.
The spindle is supported by two 5202 Double row shielded angular contact bearings rated at 10,000 RPM's. I machined 4 aluminum pulleys to accommodate the proper rpm's for I.D. & O.D. grinding. The I.D. spindle runs at 10,000 rpm while the O.D. spindle runs at 6,000. Changing spindles takes about 3 minutes.

The motor is a Dayton 1/2 HP 10,000 rpm, That I got off e-bay, The bearings were ordered from Mc Master-Carr, The flat belt came from vbeltsupply.com, The hardware came from local suppliers.

The grinder runs very smooth and relatively quiet, It did an excellent job on my lathe jaws, After they were ground I had a .0007" run out, Not to bad for a 3 jaw chuck.

This grinder will fit lathes with a 10" swing and up with the correct spacer

Below are some photos and a couple links to you tube showing the grinder in use.

As always thanks for looking and happy machining

Doug

Click this link to purchase a set of these plans http://www.homemadetools.net/forum/t...er-plans-46306