Re: Ref: Ballscrew machining

I drilled or bored a round alumn to the size of the ballscrew, them cut a slot though the full length, then when i tighten the jaws it clamps down on the ballscrew, and doesn't mark it up or scratch it... Gary ----- Original Message ---- From: stan To: Sent: Saturday, April 12, 2008 11:44:10 AM Subject: Ref: Ballscrew machining A bit of care and there will be no problems. Rolled screws are softer so softjaws, a jig or aluminium strips between the jaws and the screw would be a needed. Ground screws are more or less the same hardness as bearings and should be fine clamped directly but softjaws would be a good idea. If the machining isn't a stupid price it may be a good idea to make use of the service, if they screw up they replace them. Steel this hard is a bit of a pig to machine, try a few old roller bearings first if you have never done anything with it. A bit of practice and you shouldn't need to grind, the turned finish should be accurate with good, sharp tungsten tooling. Have a think how you are going to center it, 0.02mm is to much runout and will bind at the end of the travel with good quality bearings and rigid slides. The nut should be concentric but turn it and re-test after centering just in case. cheers Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around [Non-text portions of this message have been returnd] Addresses: FAQ: FILES: Post Messages: Purchase online: Purchase: List owner: Moderator: [Moderators] URL to this group: OFF Topic POSTS: General Machining If you wish to post on unlimited OT subjects goto: or go thru to reach it if you have trouble. I consider this to be a sister site to the CCED group, as many of the same members are there, for OT subjects, that are not allowed on the CCED list. NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO bill List Mom List Owner Yahoo! Groups Links To visit your group on the web, go to: Your shop settings: Individual shop | Traditional To change settings online go to: (Yahoo! ID required) To change settings via shop: To Purchase from this group, send an shop to: Your use of Yahoo! Groups is subject to:

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