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Messages - sceliaso

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1
G-Code, CAD, and CAM discussions / Re: Tangential CAM program
« on: December 14, 2015, 10:00:06 AM »
I have had some success playing around with the raise height, however it seems to have inconsistent behavior. This could however be due to my cam software (CamBam).

In mach3's most recent versions the tangential control is completely broken, and all they will tell you to do is write all your own tangential commands, which is very frustrating when your cam software doesn't have that ability (that's why I bought mach3, which advertises tangential control) and you have several thousand lines of code to modify (including new lift commands) by hand.

Ver. R3.034.022

2
G-Code, CAD, and CAM discussions / Re: Tangential CAM program
« on: August 17, 2015, 06:36:55 PM »
So, I rolled all the way back to R3.034.022 (Via process of trial and error) Now the tangential works, all except for the lift angle, which it does not do. Instead it will rotate to the angle of the next line even if it has to lift to reach the next line. If anyone has any suggestions?

Interesting notes on the journey - The scale on my axes has changes (I haven't recalibrated to find out how much yet), and my Angle coordinates rotated by 90 deg.

3
G-Code, CAD, and CAM discussions / Re: Tangential CAM program
« on: August 11, 2015, 10:38:40 AM »
Any recommendations for which previous version? I would just go for the build before this, but I'm not sure when the instability was introduced.

4
G-Code, CAD, and CAM discussions / Re: Tangential CAM program
« on: August 10, 2015, 10:17:50 AM »
Where might I be able to get a copy of the older version? I found some links in old threads, but they don't work anymore.

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G-Code, CAD, and CAM discussions / Re: Tangential CAM program
« on: August 05, 2015, 04:22:15 PM »
Sorry, its R3.043.066

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G-Code, CAD, and CAM discussions / Re: Tangential CAM program
« on: August 05, 2015, 01:11:02 PM »
It functions in a very limited sense. When if a G01 follows a G02 or G03 the tangential control will rotate the head to the arc angle as it moves along the G01. Also the lift angle does not function. While this could be specific to my build, the following was provided to me by Mach3 support and mimics the behavior of my machine exactly. Their solution was to hand code in all of my tangential moves.

http://www.machsupport.com/wp-content/uploads/2013/02/Mach3_Tangential.pdf

http://youtu.be/4XnM3MX_H7w

Are you running a DEMO version of Mach3 ? Last I checked the Tang control worked ok.

(;-) TP

7
G-Code, CAD, and CAM discussions / Tangential CAM program
« on: August 05, 2015, 10:52:18 AM »
I have a plotter table with tangential knife and scoring tools, which I have been trying to run via the tangential settings in Mach3, however tangential control in mach3 is apparently completely broken and the only way to get around these problems is to include the rotational commands in the G-Code. This is not a difficult thing to do, but many of the profiles I need to cut are complex and re-coding them by hand would be labor and time intensive. I am currently using CAMBam, which is important because I have to be able to load a DXF and assign individual lines to toolpaths/tools, I have looked at some other software (sheetcam for instance has settings seemingly set up for my specific situation) But they group lines from my DXF files oddly and I can't seem to get any of them to work. My CAD Software (Rules by AlphaCorr) generates a DXF with line colors to show what is a score and what is not, but this does not show up as layers or anything else in any CAM programs I have tried.

So, my question is: Does anyone know of a good CAM program that will generate the A Axis inputs for a tangential toolpath (including lifts between angle adjustments) and still allow me to assign individial lines from a single layer DXF to their own toolpaths?


Specifics on my setup: I am running a 90"x50" Alpha Merics cutter/plotter table, recently the electronics fried themselves and we replaced everything but the rails and the frame. It is going to be used to prototype folding cartons (paperboard boxes) Performing both cutting and scoring. It works well (I'm still fixing some backlash and motor tuning issues), but the goal is to be able to train someone who is not an experienced CNC programmer to use it.

This is my first post, though I hope to become a regular.

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