Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: Brian Barker on January 20, 2014, 05:05:34 PM

Title: Mach4 tapping video
Post by: Brian Barker on January 20, 2014, 05:05:34 PM
Hello guys, I feel we are getting close! We are working on the finer things in Mach4 now.. Here is a short video of me tapping some holes:

http://www.youtube.com/watch?v=UT5xeO7ZCfw&feature=youtu.be

This is using the feedback from the VFD to know how fast to feed the Z axis :) This was done with the G84 cycle!

Here is the code that I ran:

G90
M3 S800
G95
G0 Z.5
G84 X0 y0 Z-1.0 R.25 F.041
G91 X-.5 L5
G80
G90
M5
M30


Thanks
Brian
Title: Re: Mach4 tapping video
Post by: garyhlucas on January 20, 2014, 05:51:14 PM
RPMS a tad low or feed a tad high?
Title: Re: Mach4 tapping video
Post by: HimyKabibble on January 20, 2014, 10:11:53 PM
Brian,

I'm curious....  I see significant under-feed on the way down, especially as the spindle stops, and even more significant over-feed on the way up.  Looks to me like it's probably approaching the travel limits of the tension/compression holder.  Is the coordination not occurring during part of the cycle, like after the spindle is turned off at the end of the down-feed?  Or is the programmed feed wrong for that tap?

Regards,
Ray L.
Title: Re: Mach4 tapping video
Post by: Brian Barker on January 20, 2014, 10:37:09 PM
RPMS a tad low or feed a tad high?

Yeah The RPM is a tap high... I have not calibrated it .. I will fix for the next video
Title: Re: Mach4 tapping video
Post by: Brian Barker on January 20, 2014, 10:38:55 PM
Hello Ray This was only the first pass at it .. That was the first time I ran the cycle with a tap in the holder..  The ramp time on this drive sucks, I ahve a new drive ordered that should work much much better..