Hello Guest it is May 07, 2021, 09:27:52 AM

Author Topic: Tangential CAM program  (Read 14369 times)

0 Members and 1 Guest are viewing this topic.

Offline Tweakie.CNC

*
  • *
  •  8,705 8,705
  • Super Kitty
    • View Profile
    • Tweakie.CNC
Re: Tangential CAM program
« Reply #10 on: August 11, 2015, 10:47:32 AM »
I think everybody each has their own preference.

If it's any help, I use R3.043.056

Tweakie.
KEEP SAFE !
Re: Tangential CAM program
« Reply #11 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.
« Last Edit: August 17, 2015, 06:40:10 PM by sceliaso »
Re: Tangential CAM program
« Reply #12 on: December 11, 2015, 11:24:08 AM »
I read online that the Tangential knife does still work in mach3.
 You need to set the z lift value to greater than the depth of the cut plus a distance above the work piece. I have
 not tried this myself so if someone can confirm this please post it for everyone.

Offline Chaoticone

*
  • *
  •  5,626 5,626
  • Precision Chaos
    • View Profile
;D If you could see the things I have in my head, you would be laughing too. ;D

My guard dog is not what you need to worry about!
Re: Tangential CAM program
« Reply #14 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
Re: Tangential CAM program
« Reply #15 on: October 23, 2016, 06:03:49 AM »
My answer may be slightly late :D. I was facing the same problem a few days ago, so I started looking for answers on this forum. Later I found very simple solution to work around this bug of mach3 (A axis rotates even in linear move after a g2/g3 arc). What I noticed is this only appears when the specific linear move is perfectly parallel with X or Y. So I started rotating my sketches. It turns out even an angle 0.01 degree is enough to avoid the problem :). Just make sure your Gcode cordinates have enough decimals for this rotation to become visible (I use 3 decimal)
Re: Tangential CAM program
« Reply #16 on: October 23, 2016, 06:08:26 AM »
Also you should check out a free software called ECAM. It's great for 2D CAD too, and it also has very simple post processor editor, so with a few tweaks you can get the Gcode you want without having to manually overwrite it.

Take a look: https://postimg.org/image/wcaz5ur2x/
« Last Edit: October 23, 2016, 06:15:19 AM by FeketeB »

Offline Tweakie.CNC

*
  • *
  •  8,705 8,705
  • Super Kitty
    • View Profile
    • Tweakie.CNC
Re: Tangential CAM program
« Reply #17 on: October 23, 2016, 06:18:00 AM »
Excellent information FeketeB, thanks for sharing.

Tweakie.
« Last Edit: October 23, 2016, 06:19:46 AM by Tweakie.CNC »
KEEP SAFE !