- Joined
- Mar 31, 2014
- Messages
- 14
On our CNC routers at work, we have some collets that I would like to ream out. We do not have gang drills on our machines so we just use a normal tool holder with a Shars drill chuck attached to it. The problem is that with the long drill bits and the added length from the drill chuck itself, we are maxed out on positive Z-axis travel sometimes. We have to use jobber length bits instead of screw machine length for the depths we are drilling. Our HSK-63F tool holders use SYOZ-25 collets.
I am hoping I can ream out a spare 1/4" collet to hold a 17/64 drill bit and a spare 5/16" collet to hold a 21/64. How would I go about getting the correct tension on the collet in order to ream out the center?
We have a small Grizzly 9" lathe that I could put them in to ream. I also have a couple of old tool holders that I could put the collets into ream. Just dont really see how to get the correct tension on them except for maybe wedging some tiny shims in the slots before tightening down the collet nut.
I have no clue what the collets are made out of either. I am assuming its made out of some type of stainless since I have never seen a spec of rust on any of them, including some old used ones we got for free.
I am hoping I can ream out a spare 1/4" collet to hold a 17/64 drill bit and a spare 5/16" collet to hold a 21/64. How would I go about getting the correct tension on the collet in order to ream out the center?
We have a small Grizzly 9" lathe that I could put them in to ream. I also have a couple of old tool holders that I could put the collets into ream. Just dont really see how to get the correct tension on them except for maybe wedging some tiny shims in the slots before tightening down the collet nut.
I have no clue what the collets are made out of either. I am assuming its made out of some type of stainless since I have never seen a spec of rust on any of them, including some old used ones we got for free.