T&C Grinder

Tool and Cutter Grinder

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This is a Hybco 1900 Tool and Cutter grinder with Hybco 2100 form and relief cutting attachment. I added a DRO from tpactools.com.  I needed to setup a Rotary Phase Converter and had a 3450 rpm 3 phase motor so I ordered the control panel from phase-craft on ebay.  They were super helpful and I’m very happy with how easy it was to complete the RPC.

I’m still figuring out how to utilize this machine.  Despite having the instruction manual for the 2100 attachment, It has been challenging trying to set it up for sharpening drill bits.

I did manage to use it to sharpen a transfer punch and grind down the end of a drill bit to make a counter bore for #10 socket head cap screws.

 

I bought a 4×7″ suburban fine pole permanent magnetic chuck and strapped it down to try a little surface grinding.  Tramming in the spindle is similar to tramming the “nod” on a Bridgeport style knee mill.  The pivot point is off center of rotation so it requires a little head scratching.

One of my first projects was spending an inordinate amount of time getting a badly peened, bent and dented mt4 drift into usable shape.  My grandpa engraved his name in it so it’s value was too high to replace with a $4 import.  You can see the surface was getting overheated (blue stripe on side closest)  I was able to correct that with a more aggressive dressing of the wheel.  The Y feed is driven by a screw and like a mill and I had erroneously assumed that the slower I fed the diamond dresser across the wheel when truing, the better the surface finish would be.  By taking a .001″ deep pass as fast as I could turn the handle, the finish improved greatly on the next pass.