indexed grinding tool.

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refinery mike
Posts: 623
Joined: Sat Jul 02, 2011 1:54 pm

indexed grinding tool.

Post by refinery mike » Thu Oct 06, 2011 7:07 pm

I made this little tool for making small knobs, custom bolt heads and other small parts with multiple sides. Now this is not going to make parts for rocket ships but for most bolts, finger screws, fluted knobs etc. it is more than accurate enough and it will do the job before you can set up the mill to do the job.
Basicly it is a small indexing head that pivots on a hinge. it is clamped to a sander table and then a suitable round shape is pushed up into the moving sander. the adjustable stop sets each facet equally deep and the indexing head puts them equally spaced. The axle is simply a 1/2 CRS bar turned down to accept the gear on one side and center drilled and tapped on the other. The speed of the tool comes from the fact that when you wish to rotate the axle you simply loosen the clamp bolt, and pull the axle toward the gear, rotate it and push it back on to the indexing pin at the appropriate place. tighten the clamp bolt again and grind down to the stop. If you are using a belt sander it is easy to change to finer belts and polish the part while everything is still set up. You can also set the tool up on a disk sander,or a lapidary lapping plate, (the most accurate) . for a fluted knob you can clamp it to a drill press table and hinge the part into a sanding drum. the size of the drum dictating the size of the flutes. I made the tool first with simple bolts and nuts and then used the tool to make the bronze parts. it would look better with matching style parts but i just had to try out different types. I hope this is clear, feel free to ask questions, I am unclear in some area. keep the axle simple because you will have to make separate ones for each thread size.
Attachments
indexer for knobs.jpg
side view.jpg

Harold_V
Posts: 18574
Joined: Fri Dec 20, 2002 11:02 pm
Location: Onalaska, WA USA

Re: indexed grinding tool.

Post by Harold_V » Fri Oct 07, 2011 12:40 am

Is anyone besides me unable to open the pictures posted above?

Harold
Wise people talk because they have something to say. Fools talk because they have to say something.

John Evans
Posts: 2192
Joined: Tue Jan 20, 2009 9:33 pm
Location: Phoenix ,AZ

Re: indexed grinding tool.

Post by John Evans » Fri Oct 07, 2011 12:47 am

They open just fine for me.
John
www.chaski.com

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Davo J
Posts: 365
Joined: Tue May 06, 2008 9:15 am
Location: Australia

Re: indexed grinding tool.

Post by Davo J » Fri Oct 07, 2011 2:51 am

I can't open them.

Dave

bjmh46
Posts: 46
Joined: Sun Dec 02, 2007 9:04 am
Location: cincinnati ohio

Re: indexed grinding tool.

Post by bjmh46 » Fri Oct 07, 2011 6:07 am

pics show up fine here!

Firefox 3.6

Bob

stevec
Posts: 1949
Joined: Thu Oct 21, 2010 12:40 pm
Location: N.S. Canada

Re: indexed grinding tool.

Post by stevec » Fri Oct 07, 2011 6:10 am

Show up fine here too.

hammermill
Posts: 2938
Joined: Sun Jun 27, 2010 10:43 pm
Location: pendleton or

Re: indexed grinding tool.

Post by hammermill » Fri Oct 07, 2011 7:07 am

crome works fine also. nice tool you built there.

Jerry_H
Posts: 241
Joined: Tue Feb 03, 2009 9:39 pm
Location: Central FL

Re: indexed grinding tool.

Post by Jerry_H » Fri Oct 07, 2011 6:55 pm

They Sow up fine on my MAC too.

Jerry
www.chaski.com

dly31
Posts: 1052
Joined: Sun Jun 27, 2004 11:29 pm
Location: Northeast Alabama

Re: indexed grinding tool.

Post by dly31 » Fri Oct 07, 2011 7:54 pm

My computer with IE8 only shows placeholders after clicking on the links.
Don Young

pacrat
Posts: 231
Joined: Tue Mar 23, 2010 9:38 pm
Location: SoCal

Re: indexed grinding tool.

Post by pacrat » Sat Oct 08, 2011 12:27 am

Big white page, little red X in corner. Not much to see. :?

Harold_V
Posts: 18574
Joined: Fri Dec 20, 2002 11:02 pm
Location: Onalaska, WA USA

Re: indexed grinding tool.

Post by Harold_V » Sat Oct 08, 2011 1:09 am

pacrat wrote:Big white page, little red X in corner. Not much to see. :?
Yep! That's what I get, but I'm interested in seeing his creation. Maybe he'll send me the pics (by email) and I can re-post them, giving him credit.
How about it, refinery mike?

If you're willing, I'll send you an email, then you can reply. (I have access to your email address).

Harold
Wise people talk because they have something to say. Fools talk because they have to say something.

Torch
Posts: 1591
Joined: Wed Mar 17, 2010 7:58 am
Location: Muskoka

Re: indexed grinding tool.

Post by Torch » Sat Oct 08, 2011 5:59 am

I can see the pictures (both the thumbnails in the post and the larger version when they are clicked).

(They are hosted on chaski.org: http://www.chaski.org/homemachinist/dow ... &mode=view)

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