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Belt Grinder

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Cobra

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Made up a 2 X 72 inch belt grinder for a knife project my daughter wanted to do during a visit.
She had a set of five blades that she wanted to finish to kitchen knives.
It was made from plans purchased from the USA Knife Maker folks. Their plans were for a total bolt together design that I modified to welded joints where it made sense to me.
Their design is on a 30 inch square base. It works great but I will modify the arrangement and build a mobile base for it so I am not loosing a whole bench to storing it.
Although built for knife making, it has supplanted almost all of the grinding wheel use.

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Cobra

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Thanks Mike. Just need to get it on to a stand now.
Get my bench back!
 

brav65

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I have those plans, some of the materials, the motor and just need to get a VFD. Nice work!
 

Cobra

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I have those plans, some of the materials, the motor and just need to get a VFD. Nice work!
I looked at variable speed when I started it but now I don't seem to change the speed at all.
 

Cobra

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Finally got the belt grinder off the bench.



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Made up a stand on casters that will let me roll the grinder out of the way when I am not using it.
Hooks on the underside of the stand to hang the alternate tools and spare belts, keeping everything in the same place.
I will use it for a while to ensure that there are no more adjustments or additions needed and then take it apart to paint.
Great to have the bench space back!
Attached the sketch of the stand and a sketch of an adjustable tool rest that I will start this week.
Tool rest is mainly for roughing out HSS lathe tools that then get finished on the Worden tool grinder.
 

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Cobra

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I am doing a couple of knives for Christmas gifts this year and needed a smaller profile for the sander.
This is a copy of the small wheel adapter that is available on several sites.
It has the actual sanding point on the left and the narrow belt tracking roller is on the upper right.
The attachment is bolted to the end of a piece of 1-1/2 X 1-1/2 square tube.

Small Wheel Holder 2.jpg

Started with 2 X 1/2 inch stock and used face mill to reduce down to 1-1/8 X 1/2.
I was really pleased with the little G0755 mill. The 3 inch face mill would easily take 0.150 DOC in the aluminium.

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The main rails were drilled and countre bored for 3/8 socket head screws. The two rails are joined by 3/4 inch stainless spacers, again with 3/8 socket heads.

The end of the rails was rounded with the arc function of the DRO because I didn't want to set up the rotary table and the curve was not a critical dimension as long as it stayed out of the way of the work being sanded. After the mill, I sanded the curves smooth on the 2 X 72.

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Once the curve was cut, the notches to hold the wheel's bearings were cut with a Woodruff cutter.

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The attachment block was milled from a piece of 2 X 2 aluminium again with the 3 inch facemill.

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Attachment ready to use. I still have to finish the upper rails but this will get the Christmas work done!

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danny12

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nice job Cobra, what is that piece of square tube the tool arm is in. it looks different more square edged
 

Cobra

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Thanks for the comment. I didn't like the fit of the nested square tubes for the tool arm so I welded two angles together for the fitted tube.
You can see that on the other sockets, I used bolts along the sides to take up the slack.
 

danny12

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Ok I see it now, I wouldn't have thought about angle, but I like it
 
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