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Author Topic: Jog Speed versus Move speed??  (Read 3210 times)

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Jog Speed versus Move speed??
« on: March 12, 2015, 11:35:27 AM »
When I go into "Config:Motor Tuning and Setup" and change spees it only affects the Jog speed. How to change the move/cut speed in Mach3?

The speed is not set in my cut files (I assume it is possible there), but of course, don't know how to do that either.

Here are the 1st few lines of code:

('Tool Name   = V-Bit 90 deg 1.125")
G00 Z 0.7874
G00 X 0 Y 0
G00 X 0.240669 Y 0.250669 Z 0.2362
G01 X 0.240669 Y 0.250669 Z -0.240669 F 1.7

Offline ger21

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Re: Jog Speed versus Move speed??
« Reply #1 on: March 12, 2015, 11:40:45 AM »
G00 moves are rapid moves, and cut at the velocity in motor tuning.

Your G01 move has a feedrate of 1.7 assigned to it. (F1.7) I have a feeling this is a plunge feedrate. The next line should have the cutting feedrate in it.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: Jog Speed versus Move speed??
« Reply #2 on: March 12, 2015, 12:00:35 PM »
Thanks a lot. Do you think 1.7 is the ipm? Can you say how I would enter a speed for the x & y in a file such as this?

Offline ger21

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Re: Jog Speed versus Move speed??
« Reply #3 on: March 12, 2015, 12:03:04 PM »
Feed speeds are modal,meaning they remain in effect until you change them.
As I said, I'm guessing that there's another feedrate on the next line.
To add a feedrate, just use "F" followed by the feedrate you want.
F100 for 100ipm.
What software are you using to generate the code? It looks like the feedrate should be in there.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: Jog Speed versus Move speed??
« Reply #4 on: March 12, 2015, 12:21:28 PM »
I am using an old proprietary software called Partworks that came along with a shopbot. These are v-grooves. The software was made by Vectric. Then I use a second software that translates the shopbot gcode to MAch3 gcode.

10 years ago when I did these types of files with a shopbot the machine would race through these types of files. With shopbot I was able to set the Jog Speed and Move Speed independent of the gcode. With this Mach3 machine it is moving like molasses with code generated in this manner.

With a line like the following (that you previously referenced) Is the "F 1.7" just setting the speed for Z, or for X, Y, & Z? When I scan over the code for this file. There are only these occasional "F 1.7" at the end of lines like this. I think they are just trying to ensure the machine slows down on occasional plunges. Since this software was configured for shopbot. I think the code-generation assumes that the operator's shopbot settings will speed up the cut speeds other than these occasional speed-defined-in-gcode plunge rates.

I am hoping you can tell me how to just set a faster speed for the X & Y, in the code and/or in the Mach3 interface settings so I can get it to move through these files faster. Otherwise I'm in bigg trouble!!

As it is the plunges are slow, the jogs are okay, but otherwise the cutting drags a long at a tiny fraction of what it should be.

G01 X 0.240669 Y 0.250669 Z -0.240669 F 1.7

Offline ger21

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Re: Jog Speed versus Move speed??
« Reply #5 on: March 12, 2015, 12:45:03 PM »
Sounds like the 1.7 is in inches/second, from your Partworks. Your conversion software needs to be scaling it by 60 for ipm in mach3. If you can, just change the feedrates in partworks by a factor of 60.

For now, just replace F1.7 with F100, wherever it occurs.
The F word (F100) applies to all G01, G02, and G03 moves, regardless of which axis is moving.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: Jog Speed versus Move speed??
« Reply #6 on: March 12, 2015, 01:48:55 PM »
Oh Mi Gosh... Totally Solved!! Thank You So Much!