I just tried something and it seemed to work well, but since I am a
newbie, I wonted to pass it by the list to see if it might be useful
to others.
I wanted to measure the backlash on my Sherline, so I attached an Ohm
Meter to my mill. One terminal to the bed, and the other to the
spindle. It read a resistance of about 2k ohm. Then I lowered Z till
a bit touched the surface of the milling plate and the resistance
went to zero. Then zeroed Z and micro-stepped back up till the
resistance went back to 2k ohm. Z showed .0012. To test, I lowered to
zero again and as Z hit zero, the resistance went back down.
Using this information, it seems that you could devise an
edge-finding routine for any metallic object that would position the
bit exactly in the X, Y, and Z planes with respect to the object to
be milled.
Has this been tried before? -Chuck-
Addresses:
FAQ: http://www.ktmarketing.com/faq.html
FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
Post Messages: [EMAIL PROTECTED]
Subscribe: [EMAIL PROTECTED]
Unsubscribe: [EMAIL PROTECTED]
List owner: [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED]
Moderator: [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] [Moderators]
URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
OFF Topic POSTS: General Machining
If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if you have
trouble.
http://www.metalworking.com/news_servers.html
http://groups.yahoo.com/group/jobshophomeshop 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 EXCEPTIONS........
bill
List Mom
List Owner
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/
<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
