- Joined
- Nov 26, 2012
- Messages
- 1,307
I have one of those import 5c spin indexers. It takes some torque to tighten the collet where I feel it will hold. The aluminum stop lock is not near enough so the degree wheel gets grabed and of course it slips and spins.
I am attempting to use the indexer for drill sharpening so setting the drill flute to a certain spot is important.
So when tightening and the wheel rotates in means start all over.
I did a search for what others had done and found one post where the assembly was loctited in place. I feel that would work well but being unsure if the ring would ever need removed I came up with a plan to set screw it in place.
My original plan was to pin the ring to the arbor with a needle bearing from a u-joint....as I suspected I couldn't drill the arbor as it is hardened.
So I drilled an threaded for a 4-40 set screw in the ring. In the atempt to drill the arbor a mark was left....so I used a dremill with a carbide pointed bit to deepen and shape the divot to fit the 4-40 set screw.
The ring is then set in place and the set screw adjusted till it is in the divot but not pushing the ring away from the arbor. a light behind it helps to get this right.
The lock ring was then drilled and tapped for three 4-40 set screws that serve to lock it in place after it is tightened down onto the dividing ring.
Works well so far and seems to have a very tight hold on the dividing ring.
Sorry about the blurry pics.
I am attempting to use the indexer for drill sharpening so setting the drill flute to a certain spot is important.
So when tightening and the wheel rotates in means start all over.
I did a search for what others had done and found one post where the assembly was loctited in place. I feel that would work well but being unsure if the ring would ever need removed I came up with a plan to set screw it in place.
My original plan was to pin the ring to the arbor with a needle bearing from a u-joint....as I suspected I couldn't drill the arbor as it is hardened.
So I drilled an threaded for a 4-40 set screw in the ring. In the atempt to drill the arbor a mark was left....so I used a dremill with a carbide pointed bit to deepen and shape the divot to fit the 4-40 set screw.
The ring is then set in place and the set screw adjusted till it is in the divot but not pushing the ring away from the arbor. a light behind it helps to get this right.
The lock ring was then drilled and tapped for three 4-40 set screws that serve to lock it in place after it is tightened down onto the dividing ring.
Works well so far and seems to have a very tight hold on the dividing ring.
Sorry about the blurry pics.