backplot rapid move.....

[Lstar]

rapid move in backplot are point to point. when i program it to move in the pocket(not above the work),look good when backplot, but it hit on wall,because machine G00 move in 45 degree. how to set it in X and v9 to move like most of the machine 45degree move?

any help is appreciated

[Yogesh K. Raman]

dogleg rapids, metacut had the capability to simulate dogleg rapids....

[Kannon]

link to the same issue.

[Lstar]

thanks for reply

[Bruce Gibson]

in your control parameters, there is usually a setting for the G00 to use either a "combined" xy

rapid, or "independent" acceleration. for some reason alot of machines are defaulted to independent; i would change it. check your control manual.

[Colin Gilchrist]

Lstar,

 

You could also potentially modify your post so that the G00 movement codes are on different lines. There are some switches in the Control Definition file to accomplish this, but your post must have the logic routine to use it. If your post was converted from a Pre-X post then you might need to make some changes.

 

All of our posts are set up to move up in Z first before making any XY moves when retracting. When plunging, the post is set to move to the correct X,Y position, before plunging down in Z. Setting up your post in this manner eliminates the "Dogleg" rapid moves that can get 'ugly' really quickly.

 

In the Control Definition file, go to the Linear topic. Set the XY, X,Z and Y,Z sections to Break Rapid Moves. This will cause your post to output Z, then XY moves for Retract, and XY then Z for plunge if it is enabled in your post.

 

HTH,

 

Colin Gilchrist

The Boeing Company

[MMT-USA]

Some new controls use HRV control "High Response Vectoring". Due to this feature, the faster the rapid the more the control will "ARC" the motion. This kinematic motion is a common problem, more of a problem in 5-axis....

 

Depending on the control, you can set the RAPID motion to respond differently.

 

One thought is to post out "FAST" G01 motion. This is always linear, rapid is not.