Shazaam!!!
Workpiece won't stay put on the milling table
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Bill Shields
Problem Solution
You mean you fixed the problem without the use of duct tape?
Shazaam!!!
Shazaam!!!
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JimGlass
- Posts: 2281
- Joined: Sat Jan 04, 2003 8:33 pm
- Location: 40 Miles West of Chicago/near DeKalb
- Contact:
The lower left clamp, the rust colored one is clamping the corner of the workpiece like I described earlier. A big NO, NO. The clamp needs to contact the workpiece at the end. Does the 1-2-3 block serve a purpose. If not it is elevating the work making your set up even less rigid.
In my first pic, notice the clamp on the right has some light between the clamp and the workpiece except at the end of the clamp and shows what I mean by not clamping the corner of the workpiece. It is best to keep the clamps as level as possible without contacting the corner of the workpiece.
To much angle and the clamp can result in a bent stud.
I made a set of these clamps many years ago and use them often. They are made to be used with 1/4-20 studs and intended for smaller work doing layout and boring small holes. For larger work I use heavy clamps with 1/2-13 studs. Notice the set screw and swivel toe that is used to adjust the clamp to the best height. Step blocks can be purchased for this purpose.
Jim
In my first pic, notice the clamp on the right has some light between the clamp and the workpiece except at the end of the clamp and shows what I mean by not clamping the corner of the workpiece. It is best to keep the clamps as level as possible without contacting the corner of the workpiece.
To much angle and the clamp can result in a bent stud.
I made a set of these clamps many years ago and use them often. They are made to be used with 1/4-20 studs and intended for smaller work doing layout and boring small holes. For larger work I use heavy clamps with 1/2-13 studs. Notice the set screw and swivel toe that is used to adjust the clamp to the best height. Step blocks can be purchased for this purpose.
Jim
- Attachments
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- Studs & Straps 2
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- Studs & Strap Clamps 1
Tool & Die Maker/Electrician, Retired 2007
So much to learn and so little time.
www.outbackmachineshop.com
So much to learn and so little time.
www.outbackmachineshop.com
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JimGlass
- Posts: 2281
- Joined: Sat Jan 04, 2003 8:33 pm
- Location: 40 Miles West of Chicago/near DeKalb
- Contact:
Below is a layout fixture I made for spot drilling and boring work. The back edge of the fixure is set to Y "0" and the left edge is x "0" on my DRO. This allows be to use the edge finder only one time for multiple parts. The 1/4-20 studs are used with this fixture.
Jim
Jim
Tool & Die Maker/Electrician, Retired 2007
So much to learn and so little time.
www.outbackmachineshop.com
So much to learn and so little time.
www.outbackmachineshop.com
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recoilless
- Posts: 38
- Joined: Wed Feb 21, 2007 5:19 pm
- Location: Porter Beach, IN
4cat: Is the bolt at the left in picture #2 a carraige bolt? I'm as guilty as the next guy of using what's laying around but that would not be my first choice. A stud w/nut and washer or some combination to give greater purchase area than the four corners on carraige bolt towards the strap clamp helps. My take
Twice of what you think you know is half of what you'll never know...
Very nice, Jim.JimGlass wrote:Below is a layout fixture I made for spot drilling and boring work.
Funny, one of our (occasional) readers, a self taught machinist and friend, built something similar not too long ago. Very handy, I'm sure. I've always just made table setups. Makes me wonder how many hours I've wasted making them that could have been dedicated to building a similar fixture.
Harold
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4catmom
I appreciate the additional ideas. And Jim, I didn't understand your point about clamping the corner at first, but do now from your picture. Thanks.
I like the fixture idea. However, since I seem to be stuck in an endless cycle of making tooling to make tooling to make tooling
, I'll save the fixture idea for later. I have to make at least one locomotive part first!
Recoiless, the carriage bolt is really being used as a stud. The nut under the head is turned to tighten the clamp. But I understand your point.
I like the fixture idea. However, since I seem to be stuck in an endless cycle of making tooling to make tooling to make tooling
, I'll save the fixture idea for later. I have to make at least one locomotive part first!Recoiless, the carriage bolt is really being used as a stud. The nut under the head is turned to tighten the clamp. But I understand your point.