Workholding (Dovetail)

[surfacemode]

Does any one know of a good resource for learning about Dovetail Workholding?

 

Serg

[Justin Beebe at Folsom Tool]

surfacemode,

 

I'm not exactly sure what you mean. We make a series of parts that we hold by milling a dovetail on the parts during the first operation. Then the parts can be held in dovetailed vise jaws for the second operation. This method works very well becuase the dovetailed jaws hold the part down very flat and there are no clamps in the way.

[Bruce Caulley]

Do a google search for technigrip.

 

Bruce

[SydwazShawn]

Or search Raptor Workholding. The Raptors allow smaller parts to be made and have a fixed dovetail lip on one side. The technigrips are a little bigger with more bite strength, and have floating clamps which use 2 dowel locations to keep the part stationary. Most dovetail clamps are 30 degree’s. They grab onto .125 of material max in those combos mentioned above.

 

Shawn

[Jack Neelands™]

+1000 Bruce

 

Picture if you can a heavy block of ali being mounted in a horizontal with just a dovetail plate of .06 x .03 deep in the along the 18 inch sides. The block measured 18x14x4 thick and we pounded that block with 1.00 carbide gars buried 1.00 deep....(lots of joined pockets)...once that operation was done we rotated the block around and flipped it inwards in vices to machine the back and remaining sides taking the dove tails out.

The shallow gripping power is far superior to alot of vices that are out there and works fantastic.

 

With smaller parts we could stack them in the long vice with seperate back jaws and perform the same types of operations on the parts.

 

Takes a little R&D to work out what you want but worth it in the end if you are trying to do alot of production

 

just my .02 pesos

[Guest CNC Apps Guy 1]

I prefer to use the Dovetail Method.

 

 

20,000 RPM, 800 IPM, .500 Bull 2 Fl. E/M w/ .03 Rad (iirc) @ .12 DOC and 30% Dia. WOC.

[X-L Engineering Corp]

+10000 Techni-Grip

[surfacemode]

Thanks,all, for the information I have just emailed Technigrip to request more information. Basically I need a good way to hold material on a rotab, I am also looking at Mitee-Bite products.

 

Serg

[Guest CNC Apps Guy 1]

You can get equal performance from Raptor, and they are a bit less expensive and are LOCAL. Burbank to be exact. Give them a shout too. You can get them in different materials too if you need different properties like less thermal growth, etc...

[Dave.L]

Pretty easy to design and build your own at a price much less than purchasing some units on the market. Although I think some are pretty nice, I think they are a little over priced.

[Columbo™]

How about Raptor dovetail fixture