Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: Saumur on May 06, 2011, 12:07:47 PM

Title: Radius tool compensation
Post by: Saumur on May 06, 2011, 12:07:47 PM

Hi guys,

I was wondering if there is the following options in Mach3:

Let's suppose I make a program using my CAD/CAM and use a tool radius 1.2mm.

In case that the radius of the tool changes from 1.2mm to 1.1mm, is there an option in MAch3 that allows me to change it instead of re-do the program again with different radius?

Thanks nad regards

Title: Re: Radius tool compensation
Post by: derekbpcnc on May 06, 2011, 01:46:39 PM

Yup,

Search G40 G41 and G42

ATb
Derek

Title: Re: Radius tool compensation
Post by: BR549 on May 06, 2011, 10:22:18 PM

IF your cam is doing the offsetting before the posting of the code then NO.

If your cam is using Tool Comp then YES.

(;-) TP

Title: Re: Radius tool compensation
Post by: kak on May 06, 2011, 11:53:05 PM

There is something called "Diam. Wear" and "Hight Wear" in Config/tooltable, but Im a newbee -I dont know how to use it.

Title: Re: Radius tool compensation
Post by: ger21 on May 07, 2011, 12:20:29 AM

Quote from: kak on May 06, 2011, 11:53:05 PM

There is something called "Diam. Wear" and "Hight Wear" in Config/tooltable, but Im a newbee -I dont know how to use it.

They don't do anything. They will in V4, though.

Title: Re: Radius tool compensation
Post by: Saumur on May 07, 2011, 12:59:33 PM

So nothing works yet??

the g40,41... are used for the matter I'm interested into or something else?

thanks

Title: Re: Radius tool compensation
Post by: ger21 on May 07, 2011, 02:06:45 PM

G41/G42 will use the tool diameter in the tooltable, but they won't take into account the diameter wear values.

Title: Re: Radius tool compensation
Post by: Saumur on May 10, 2011, 10:00:25 AM

Thanks ger, really appreciated.

So with those G you choose a tool in the tool table but my question is: what's the point if they don't take in account the diameter of the tool??

What's its use??

Thanks again man.

Title: Re: Radius tool compensation
Post by: ger21 on May 10, 2011, 11:05:14 AM

They do use the diameter, but not the values in the wear column.

Title: Re: Radius tool compensation
Post by: Saumur on May 10, 2011, 11:25:42 AM

ahhhhh I can't understand what you mean....

To simplify all, would the G42 do what I need?? (change the radius of the tool without do the program again?)

Title: Re: Radius tool compensation
Post by: ger21 on May 10, 2011, 11:29:02 AM

The g-code needs to be created with G41/G42 in mind, as you need to use lead-in and lead-out moves. If programmed correctly, then yes, you can use different size tools.

But, you can't just add a G42 to an existing program without other modifications, as it most likely won't work.

Title: Re: Radius tool compensation
Post by: Saumur on May 10, 2011, 11:41:07 AM

Do you know how I can create a program taking in consideration the G41-42? Do i Have to change the post processing files?

If that is the case it would be a problem since I have no idea how to do it.

thanks