gking86
Plastic
- Joined
- Nov 3, 2016
- Location
- Southern Illinois
I have several types of parts that are round that I would like to come up with a new way to fixture. The parts are thread splits and striker plates for Stretch Blow Molding. They get wired in half, and usually they are stuck to a large magnet which is set against 123 Blocks on the table. This generally gets the job done, however it means that my upper and lower flush cups are almost as far apart as they can possibly be, and the wire runs through a bit of steel, then an 1-4" of open space then more steel. Wire almost always breaks in the lower portion where flushing is poor.
I'd like to turn the parts so that I am cutting through the solid part with no gaps. This would also let me get my Z axis a ton shorter. The parts never come through with the same bolt pattern twice. I'll do 20 or so with a pattern and then never see that set up again. They do have the same specs on the bolt holes and counterbores, so I've turned pins that fit tightly in the holes. Attached is a rough wireframe of what I think would work.
The idea is to set one to the table and use taper pins or something to locate it the same place every time. The second part is going to have holes drilled and tapped and I'm going to run some real fine threaded rod through both of them and use that to adjust the "soft jaw" until it indicates in to my X axis. I want to mill out a half-slot on the face of each that the pins will set in. I'll find center off of the jaws of this fixture and just wire across the table in X+. In my mind, as long as the fixture is indicated in parallel to X and the parts are in tight, I should be able to cut them consistently in spec.
I hope this makes sense. I can get some photos here shortly, but we have a no-cellphone policy and zero signal anyway. So whatever photos I take will have to wait till tonight.
I'd like to turn the parts so that I am cutting through the solid part with no gaps. This would also let me get my Z axis a ton shorter. The parts never come through with the same bolt pattern twice. I'll do 20 or so with a pattern and then never see that set up again. They do have the same specs on the bolt holes and counterbores, so I've turned pins that fit tightly in the holes. Attached is a rough wireframe of what I think would work.
The idea is to set one to the table and use taper pins or something to locate it the same place every time. The second part is going to have holes drilled and tapped and I'm going to run some real fine threaded rod through both of them and use that to adjust the "soft jaw" until it indicates in to my X axis. I want to mill out a half-slot on the face of each that the pins will set in. I'll find center off of the jaws of this fixture and just wire across the table in X+. In my mind, as long as the fixture is indicated in parallel to X and the parts are in tight, I should be able to cut them consistently in spec.
I hope this makes sense. I can get some photos here shortly, but we have a no-cellphone policy and zero signal anyway. So whatever photos I take will have to wait till tonight.