Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: N4NV on December 26, 2008, 07:54:00 PM

Title: Hall RPM sensor
Post by: N4NV on December 26, 2008, 07:54:00 PM

My Hall effect limit switches worked so well, I decided to make a Hall speed sensor for my mill’s quill.  You can read the dirty details here:

http://www.cnczone.com/forums/showthread.php?p=543898#post543898
or
http://tinyurl.com/8kcmu4

The bottom line is the sensor works to my mills 4,000 rpm limit and down to 60 RPM.  Below 60 RPM Mach displays 0.

Vince

Title: Re: Hall RPM sensor
Post by: jimpinder on December 27, 2008, 02:53:43 AM

Nice job.

Christmas job for me - ball screws.

Cross slide is done - speed up from 20 in per min to 1000mm per min without effort, will probably go higher. Since I only have about 10 inches total movement, thats fine.  No measurable backlash I can detect - I'm having another look at that today. (Now in mm, please note Hood)

Just the lead screw to do - but I can't turn it because my lathe is in bits - will have to wait for a friend to recover from Christmas.
Huh - some people !!! ::)

Title: Re: Hall RPM sensor
Post by: N4NV on December 27, 2008, 05:38:10 AM

'Tis the season for more projects.  I'm taking 10 days off from Christmas to January 5th.  Next I hope to get a RPM sensor on my lathe, weld up a stainless steel door for my wife's storage shed and clean up a lot of junk in my garage so I have room for more toys.   Lots of stuff for eBay.

Vince

Title: Re: Hall RPM sensor
Post by: jimpinder on December 28, 2008, 05:21:20 AM

Forget the welding and the cleaning - Happy New Year.