Messages

1

General Mach Discussion / Re: A axis isn't working

« on: October 08, 2013, 04:23:36 PM »

G00 A1 should get you 1 degree, if you are getting 1 rotation something is wrong. Is this what you're getting?

2

General Mach Discussion / Re: A axis isn't working

« on: October 08, 2013, 02:26:40 PM »

It should require A360 for full rotation is setup right, but he said "added a-axis just turns and turns up to 360 when the g-code line commands A to 360". I remember seeing a mode where A1 equals a full rotation somewhere. Just wanted to eliminate that as a problem.

3

General Mach Discussion / Re: A axis isn't working

« on: October 08, 2013, 02:22:35 PM »

If you type

Code: [Select]

G00 A1. do you get 1 rotation?

4

General Mach Discussion / Re: Constant Velocity problem with rotary 4th Axis

« on: October 08, 2013, 02:13:50 PM »

Soft limits are off.
If I do this:

Code: [Select]

G01 Y0.0 Z1.1 F45 (cutter down)
G01 Y0.0 A360.0 F300 (rotate A axis)
G01 Y0.0 Z1.5 F45 (cutter up)

It cuts fine. But for some reason RhinoCAM wants to split a circle into 32 sections (11.25 degrees) and Mach3 is treating them like Exact Stops instead of Constant Velocity.

5

General Mach Discussion / Re: Delay between lines of code

« on: October 08, 2013, 01:58:47 PM »

I just posed about the same problem a few minutes ago! I think it is a CV problem, but I can't figure it out either.

6

General Mach Discussion / Constant Velocity problem with rotary 4th Axis

« on: October 08, 2013, 01:24:54 PM »

I've just added a 4th axis to my K2CNC and I'm having what seems to be a continuous velocity problem. The X,Y,and Z axis seem fine, but the A axis keeps stopping when it hits it's coordinate as if it's in exact stop mode. Has anyone seen this before?

The G-code is coming from RhinoCAM and includes an A-Axis coordinate every 11.25 degrees for some reason when cutting a test cylinder. MechSoft support says there is no way to change this behavior, and I would rather not have to edit the g-code by hand every time I make something.

Here's what it looks like:

Code: [Select]

G00 G49 G40.1 G17 G80 G50 G90
G20
(4th Axis Roughing)
M6 T6
M03 S18000
G01  Y0.0000 Z1.2250 A0.000 F35.
Y0.0000 Z1.1000 A0.000
Y0.0000 Z1.1000 A0.000 F360.
Y0.0000 Z1.1000 A-11.250
Y0.0000 Z1.1000 A-22.500
Y0.0000 Z1.1000 A-33.750
Y0.0000 Z1.1000 A-45.000
Y0.0000 Z1.1000 A-56.250
Y0.0000 Z1.1000 A-67.500
Y0.0000 Z1.1000 A-78.750
Y0.0000 Z1.1000 A-90.000
.....
Every 11.25 degrees the rotary axis stops and restarts. Anyone know how to fix this in Mach3 without editing the g-code?

Thanks!

7

General Mach Discussion / Re: G-Code Help!!!

« on: July 06, 2011, 10:36:53 PM »

I had the same problem, but I was using G83 for the peck drilling. I think they're close enough that it's the same problem.

If I didn't have a feed rate defined, the spindle would go to the position, pause for a second, then move to the next drill position and repeat. Once I defined the feed rate (F10.0 in my case), it worked as expected. For some reason this only seemed to be a problem if the file only contained drilling operations, or if the drilling operations were first. That's the part I can't explain.