Using a surface Grinder

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kvom:
Using the grinders at school I have done the following:

1) Made a set of angle blocks from tool steel: 45-45-90 and 30-60-90.

2) Reground the ways and jaws of my Kurt vise

3) Ground the top and bottom of a cast iron tilt table to raise my vise on the CNC mill.

4) Ground some thin grooving tool for cutting cylinder fins

Grinding the vise and tilt table needed a larger grinder than you have. A jig like Bogs has for regrinding endmills would be a good addition.

Since your grinder is old, you might consider grinding the table to true it up.

Darren:

--- Quote from: kvom on April 23, 2010, 12:24:50 PM ---

Since your grinder is old, you might consider grinding the table to true it up.

--- End quote ---

Hi, some nice suggestions there, I think the grinder will come in useful for many things one being to clean up and true other tooling.

I think I'll give grinding the table a miss as it's been scraped in the same manner as all the ways ... someone has been very busy with this machine. Mind you though, I still need to test if it's true and if not I'll shim the magnetic vice and such.

kvom:
I didn't realize you had a magnetic chuck. You can actually grind that true. Usually a few 10ths will suffice.

Rob.Wilson:
Hi Darren

You may want to make , a small doodad to hold a diamond piont (cut down ), to dress the wheel , just a block of steel with a hole poked in it at an angle ,so when the piont weres you can rotate it to a fresh edge , and grub screw to hold the piont .

I would as Kvom ,said , grind the mag chuck true , when you do , do it with it turned on .

Cheers Rob

kvom:
I was taught to dress the wheel every time before use, using the tool Rob showed above. And don't turn the spindle off until you're done; if you do it needs to be dressed again.

Technique is to lower the wheel VERY slowly until you hear it just touch the diamond; then move it across the wheel with the Y-axis crank.

I was also taught to place the material to be ground at an angle to the x-axis, and thus to start grinding at a corner. That way if you've taken too big a bite you can adjust the height without creating a big streak on the material.

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