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Winner Planer Blade Grinder

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f350ca

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I need a better system for sharpening the thickness and jointer blades. And a project.

Started with the fixture that will hold the blade. In order to make that we needed to make a clamp system for the shaper.

Almost at the limit of the shaper cutting 16 inches.

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Greg

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I've been using a Delta grinder Jack, does a good job, but a bear to set up, and it uses the side of a cup wheel to give a straight grind, I prefer a hollow grind to hone.

Finished roughing the blade holder on the shaper. Had to tighten up the belts, they were slipping on a .05 doc and .014 feed. Nice big curls but my stroke speed must have been too low, they wouldn't turn blue.

Mounted it in the mill for a couple of light passes to straighten out any warp from stress relief, and chamfer the one edge to clear the grinding wheel.

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Greg

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Have the housing made for the linear bearings the assembly will slide on. Tried with some mastery steel I had but couldn't get the bore cut without tearing, hence couldn't hold the tolerances I needed to preload the bearings. Went with aluminum, cut nice the bore had to be 1.563 +.0005 - .0000. Not bad for holding it in a 16 inch 4 jaw, was too long for the small lathe.

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Greg

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Made the arms? that attach the blade clamp to the linear bearing housing. Im measuring a 2 thou dip in the back fence, this means nothing as the blade will be set forward with adjusting screws. The clamp runs 3 thou high in the middle though, surfaces must not be parallel. Oh for a larger surface grinder to correct this. In reality flexing a 15 inch planer blade a few thou when grinding would make very little difference in the straightens of the cutting edge, and its cutting wood thats going to move around on its own free will. Guarantied this will make them a LOT straighter than Im getting them now.

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Greg

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Have the clamps, back plate and adjusters that position the blade made.

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Ground the clamps and back plate to make them shiny, and just cause the surface grinder was sitting there.

Greg

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Rather than make a grinding head and have to deal with the bulk of a spate motor I bought a Chinese 6 inch grinder. The washers for the wheels were terrible, had to make proper ones to get it running true, but the motor I must say is very well balanced.

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Making the parts to adjust the depth of cut.

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Greg
 
Nice one Greg!
I did not understand how you were doing the height adjustment until I saw the latest post.
Great simple mechanism.

Thanks for sharing it!

-brino
 
Finished

Used cold blueing on the blade clamp parts and painted the chassis. Have attached a line to feed air between the two linear bearings, hopefully the positive pressure will keep grit out.

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Thanks for watching.
Greg
 
Very nice build Greg. Like the idea of air to the bearing housing. Would some kind of bellows style cover work in addition to that? Maybe something like motorcycle fork boots or the ones they make for shock absorbers. Mike
 
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