Axial feed in Vericut (Simens 840D)

igor · 2012-10-05 12:26:15

Hey guys,

Our subroutines of Tool change (in real machine) are too complex, so I use other routine to simulate, that's easier to understand and to put on Vericut.
The real T_change subroutine use a lot of tools of the Siemens, like ID's, axial feed (FA[X]) and asynchronous movement, to make the change fast and secure.

Trying to make a long story short (I think it already have been a long story) I know Vericut doesn't simulate asynchronous movements, this are causing a lot of problems though, because the movement in T_change use axial feed make each axis move with a diferent feed, so the trajectory are totaly diferent (depend on the position of each axis) of what I simulated.

Well, anyone has a sugestion???What can I do to make a better simulation???

I use the 7.1.5 Vericut version, the control is a siemens 840D (that I make many modifications)

MustaphaC · 2012-10-08 05:43:04

Hi,

The only way to get axis taking their own feed is to make them not interpolated under "Machine Settings" > "Axis Priority". But this only valid for Rapid motions. You will then get "square" motions as each axis will take its own rapid feed from the kinematic parameters...

Svante · 2012-10-08 08:29:19

Hi,

I use this thread for a similar question.
Is it possible to adjust how much "dog-leg motion" to be allowed for a specific machine?

In one of our Mazak machines, I have configured the fast feedrates for each axis correctly, but when unchecking Interpolation unexpected collisions due to dog leg motions happen in Vericut. On the real machine a few of these actually happen, but not as many as in Vericut.
And when checking Interpolation, no dog-leg collisions will happen.

So - how to "adjust" the amount of allowed dog-leg?

NOTE: I haven't adjusted the acceleration/decceleration values for the axes. How much impact could this have on the dog-leg behaviour?

Thank you,

MustaphaC · 2012-10-08 08:39:35

VERICUT does not simulate "progressive dog-leg" like a real machine. On Mazak machines, and on others, the operator can override the rapid motions by a percentages. Depending on the percentage used the "dog-leg" effect will be more or less increased. VERICUT considers override rapids at 100% and then feeds taken into account are the one from the kinematic parameters. The Acceleration parameters are not taken into account in the trajectory, it is used in the time calculation if "Apply Acceleration to Cycle Time" option is checked.

Svante · 2012-10-08 10:58:11

Thank you for quick response.

VERICUT Users' Forum

#1 2012-10-05 12:26:15

Axial feed in Vericut (Simens 840D)

#2 2012-10-08 05:43:04

Re: Axial feed in Vericut (Simens 840D)

#3 2012-10-08 08:29:19

Re: Axial feed in Vericut (Simens 840D)

#4 2012-10-08 08:39:35

Re: Axial feed in Vericut (Simens 840D)

#5 2012-10-08 10:58:11

Re: Axial feed in Vericut (Simens 840D)

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