"Precision" Pin Vise

Bob La Londe · 2016-03-02T17:59:55+00:00

Are there any pin vises suitable for CNC drilling at high speeds for micro drills. A high quality high precision pin vise. I know. I know. Sounds like an oxy moron. I think if I can find a pin vise that will actually hold the bits straight, and has low enough runout, it will be possible with correct speed and feed calculations. I bought two mid price pin vises from two different sounces, and unfortunately neither holds a drill bit particularly straight. In the mean time I ordered some carbide micro drills in the sizes I need, but because of their DOC capabilities, I'll need to back drill the part. Oh, joy. A secondary setup for a part what fun. LOL. FYI: Did some tests with what I had and found HSM Adviser wanted to feed way to fast. As a check I plugged the same numbers into ME Consultant, and it indicated less than half the feed rate of HSM. The HSM numbers flexed and broken drill bits very quickly. Haven't retried yet with the ME numbers.

Mar 02, 2016 22 Replies

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Bob La Londe 10 years ago

No, not unless I want to remachine the head and change out the spindle on my little high speed machine. It has a 1HP ER11 spindle. Of course its not a standard 65mm spindle either. LOL.

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Steve W. 10 years ago

Just buy a set of pin chucks. They do what you are looking to do. Run tiny variable sized drill bits in a standard size collet.

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Bob La Londe 10 years ago

Already been down that road. Bought several that looked much like those in your pictures for at varying price levels. None held drill bits straight in the sizes I wanted to drill. Went with 1/8 shank carbide micro drill instead. Then back drilled for clearance. Not ideal, but it worked.

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