Messages

71

General Mach Discussion / Re: Problem cutting circles

« on: April 28, 2009, 05:31:29 AM »

Is it set up any backlash compensation in Mach3?

72

General Mach Discussion / Re: Printed manual

« on: April 28, 2009, 12:32:43 AM »

What version does it cover, the 1.84 version?

73

General Mach Discussion / Re: problems with ports

« on: April 27, 2009, 12:50:55 PM »

What is your jog settings? Is it continous jog mode or step jog mode?

74

General Mach Discussion / Re: Laser for Cutting PCB Solder Paste Stencil

« on: April 27, 2009, 12:48:47 PM »

As I understand it lasers do not cut Al well due to Al is to reflective. It reflects to much of the light back into the laser.

Don't know how it is on transparent stuff either. If the laser light goes straight through it probably don't cut that well either.

75

General Mach Discussion / Re: smooth pulses for Laser

« on: April 27, 2009, 12:35:53 PM »

I looked at the toolpath on one of the ribs in the bottom of the drawing. The outside profile consists of many short simultaneous straight/linear movements of the x and y axis instead of longer arcs segments. Your feedrate is high. I got 1800mm/m. That is 70.8 ipm. Is that correct?

With such a high feedrate and short lines instead of longer arcs you can/will get rough running if you have chosen exact stop in the general configuration menu. Have you exact stop or constant velocity checked? Next is your CV Distance led/button on the Settings page should be on. Is it? What value has it? If on and Zero value it is the same as exact stop even if you have constant velocity in your configuration menu. Also the constant velocity button may cause it. Is it on? what value has it?

Nice work though. What plane is it for? What scale is it?

76

General Mach Discussion / Re: Problem cutting circles

« on: April 27, 2009, 08:53:11 AM »

How much oval is it? Visible to the naked eye?

77

General Mach Discussion / Re: Problem cutting circles

« on: April 27, 2009, 07:27:01 AM »

Is it a smoth oval or is it any distinct steps in it?

78

General Mach Discussion / Re: how to go to z without traveling dagonally

« on: April 27, 2009, 01:42:29 AM »

As I'm a noob in cnc work I think I will keep my mouth shut for a while now......

79

General Mach Discussion / Re: how to go to z without traveling dagonally

« on: April 27, 2009, 01:23:20 AM »

I p

If you are threading, Why is Y changing directions?

Probably meant when X changes direction.

As to the tool crashing, can you post something showing the fixture so we can see what you are trying to avoid?

Actually I haven't connected to a machine yet.
What I meant is that I had the same position in every "A" move, 60 or 360 degrees. Not any rotational movement after the first 60 or 360 degrees rotation if running in absolute mode in Mach3. After that only -Z moves. That is the crashing of the tool into the work piece

80

General Mach Discussion / Re: smooth pulses for Laser

« on: April 27, 2009, 12:01:56 AM »

Can you attach a bit of your code where you have erratic running?