implmex
Diamond
- Joined
- Jun 23, 2002
- Location
- Vancouver BC Canada
Good morning All:
So I just got a new project this morning...I have to shorten some screws...some LITTLE screws...120 of them!
I have to take about 0.5 mm off them and they all have to be the same within about 0.05 mm (0.002")
I'm thinking a U shaped steel bar with 40 holes tapped into them and a quick whirl on the surface grinder.
I want the heads of the screws to touch the mag chuck so they'd go between the legs of the U, and if this turns out to be the best way, I need to make the feet of the U big enough so they'll stick to the chuck.
I want the screwheads to touch the chuck so they can't back up when the wheel hits them.
I am free to stone the heads if I have to in order to get them all to touch the chuck.
Problem is, it's all so skinny I'm afraid the heat from the grinding is going to suck the jig plate up into the grinding wheel.
So I thought maybe 40 counterbores into a thicker plate, but now the jig is getting to be more work than the screws.
Any brilliant ideas out there??
I do have a sinker and a wire EDM but I can't see a way to avoid having to make the fixture, even if I use one of those machines to eliminate the spinning screw problem that comes with the grinder.
Sorry about the blurry pic...the screw is so damn tiny it's hard to keep it from rolling off my finger when I put it under the camera lens, so I wasn't all that steady when I tripped the shutter.
Cheers
Marcus
Implant Mechanix • Design & Innovation > HOME
Vancouver Wire EDM -- Wire EDM Machining
So I just got a new project this morning...I have to shorten some screws...some LITTLE screws...120 of them!
I have to take about 0.5 mm off them and they all have to be the same within about 0.05 mm (0.002")
I'm thinking a U shaped steel bar with 40 holes tapped into them and a quick whirl on the surface grinder.
I want the heads of the screws to touch the mag chuck so they'd go between the legs of the U, and if this turns out to be the best way, I need to make the feet of the U big enough so they'll stick to the chuck.
I want the screwheads to touch the chuck so they can't back up when the wheel hits them.
I am free to stone the heads if I have to in order to get them all to touch the chuck.
Problem is, it's all so skinny I'm afraid the heat from the grinding is going to suck the jig plate up into the grinding wheel.
So I thought maybe 40 counterbores into a thicker plate, but now the jig is getting to be more work than the screws.
Any brilliant ideas out there??
I do have a sinker and a wire EDM but I can't see a way to avoid having to make the fixture, even if I use one of those machines to eliminate the spinning screw problem that comes with the grinder.
Sorry about the blurry pic...the screw is so damn tiny it's hard to keep it from rolling off my finger when I put it under the camera lens, so I wasn't all that steady when I tripped the shutter.
Cheers
Marcus
Implant Mechanix • Design & Innovation > HOME
Vancouver Wire EDM -- Wire EDM Machining