5 AXIS POST PROBLEM

[Todd Wertz]

Howdy All! I have a post problem. The problem is with 5 axis cuts. When I use my post I get a message asking me what my pivot length is. I then enter a value and continue. The value I enter is how far my cnc will cut off on z. For example if I enter a value of 4” it will cut 4” above my part. Can anyone help?

 

Thanks

Grand

[Dan Bedore]

try entering 0 if it is a top plane cut. your pivot length is mainly for altered plane cuts. but it does sound like there is a post problem since you are using a g92.

[Toolfab]

Are you saying that the cutter is supposed to move in a Z motion but instead is moving in the Y?

 

Search your post for that text line and make sure the equation that is supported by it has a Z value and not a Y.

 

HTH

[Todd Wertz]

No! What I am saying is that the pivot is changing as well as the z axis. It should just be the pivot.

[Guest CNC Apps Guy 1]

quote:

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The value I enter is how far my cnc will cut off on z.

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I am of the opinion that the Pivot Distance should be the distance from the gageline of the spindle to the pivot point. (A fixed and known distance)

 

Your post could be asking for the gage length of the tool depending on how your post was set up.

 

JM2C

 

[ 02-06-2003, 02:07 AM: Message edited by: James Meyette ]

[Bolts-and-nuts]

The post we are using asks us only for the 'gauge length'. I beleive that in order for the post to compute for the actual Machine coordinates. It needs to have the tool gage length and the pivot length.

 

Our posts outputs the value of both pivot length and the gauge length of each tool in the NC file and from my own understanding, the pivot lenght is constant to a machine. The gage length is different for each tool that you use. The pivot length is the distance between the pivot points of the machine point of contact of the machine tool and the tool holder.

 

Just FYI. cant advise you other than consult your local dealer.

[Todd Wertz]

We looked at the post. It is looking for an oal. Option one would have been just spindle from pivot.

[David Eno]

What type of 5-axis machine do you have? The pivot distance is necessary to calculate XYZ output for 5-axis routers, such as a Thermwood, where the two rotary axes are part of the machine's head. On these machines, the tool rotates in two directions; the part stays fixed. Therefore, the XYZ values have to adjust accordingly to put the tool tip in the correct location.

 

If you have a machine which rotates the part instead of the tool, you may not be concerned with pivot distance.

 

Good luck. Hope everything works out well for you.

 

Dave

[Todd Wertz]

I have a Motionmaster 5 axis router. It has an Allen Bradley Controler.

[Lord Wukits]

I have a Motionmaster 5 axis router. It has an Allen Bradley Controler.

Mr. Wertz,

 

Any luck? I'm having the same difficulty. 

[Müřlıń®]

Mr. Wertz,

 

Any luck? I'm having the same difficulty.

I can't remember what I was doing 13 years ago

[Mick]

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