Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: softselect on September 06, 2013, 06:04:37 PM

Title: Automatic feedrate change during program execution
Post by: softselect on September 06, 2013, 06:04:37 PM

How can i get mach to change the feedrate while a program is running, I want to have the feedrate go from 5% at the start of the program to 100% at the end
this is for surface milling, when i start in the center of the job the feedtate is too fast and breaks the cutter. Standing there and manually changing the feedrate works, but some programs run for hours and i sometimes forget to go change the feedrate.
any help would be appreciated

Title: Re: Automatic feedrate change during program execution
Post by: BR549 on September 06, 2013, 06:17:43 PM

You simply program the feed rates you want where you want them in the Gcode file.

But I am not sure I understand your problem. The Feedrate should be based on chip load and it normally stays the same from beginning to end. The chip load is the same . IF feedrate at the beginning is causing problems then I think you have other problems.

Just a thought, (;-) TP