Need Help!- Problem with old Chick vises

[sbarziza]

Hello:
I am having a problem with my Chick vises.
I am using 4 dual Chick vises, MLQ 1040. It seems that when I go to clamp my parts, one side of each station pushes up my part by .015", and so I get a screwed up part, that is not parallel. I called Chick and they that either my D-holes in the slide assembly are worn lose or my pins are worn down.
So I am in the process of taking my Chick vises apart and cleaning everything.
My question is, is there a way to add a shim in the D-hole to take up any slack ? Or is there another way to solve this problem ?
Any help or tips would greatly appreciated.

Thanks

Sam

[Mike Stevenson]

sbarziza,

Chick told you what the problem is. Check it out and replace the worn parts. There is NO free way to solve your problem.

[ImanCarrot]

Or is there another way to solve this problem

If you're holding a fairly large part stick a rod (I use a scrap piece of 1" steel bar) between the moving vice chuck and the part being held. This will stop the part rising.

Example:

http://www.jjjtrain.com/vms/mill_squ...uaring_06.html

[sbarziza]

That is an interesting idea. My parts are small and thin. In my Chick vises I have milled a 0.1" pocket, so there is not much room to stick a rod in there.
I did follow Chick's advise, and that was to clean everything. Well in the process on doing that I discovered what my problem was. It was mainly with my stationary jaw.
It seems that the 2 metal inserts in the vise had bonded into a some trash. So I cleaned some of that out and very slightly pushed those inserts down. Now, everything is leval as it should be. So I just saved myself over 1000 dollars from having to buy new slide assemblies.

Sam

[ImanCarrot]

Heh, it's nice when things work out.

Proper engineering

[Mike Stevenson]

Yes, Way to go.

[impact]

I clean my chicks down to the base every set up to avoid this

[Scanfab]

You should always keep your chicks clean, the last thing you want to find someones elses chips when you open her jaws to put in your part..

[GaryCorlew]

Originally Posted by Scanfab You should always keep your chicks clean, the last thing you want to find someones elses chips when you open her jaws to put in your part..

LOL!!!

[BusyinCA]

I have had the opposite problem of the pins being too tight (We make our own jaw blanks). When cleaning everything doesn't work I ream out the hole in the soft jaw. You might try milling a bit off the bottom of the jaws, that will bring the pin hole down and tighten up the D hole.