Variable feed in a chain

[Santa Fe]

Is there a way in the toolpath settings to specify a variable feed for a chain? for example at the start of the chain I want to start cutting at a feed of 24imp and gradually increase the feed so at the end of the chain  the fee would be at 72imp or vice versa.

I know how to do it manually by braking the chain in segments and then assign a feed to every segment but I want to know if there is a faster way as I am going to have to do this to a good number of toolpaths.

Thanks in advance.

[SlaveCam]

Sounds like a NET-hook thing, I doubt one already exists but it is definitely doable. If it was a single chain (or point to point), things would get much simpler and I'd use a macro.

May I ask why do you need this?

[Leon82]

Can you manipulate the high feed feature settings to do this?

It's like aicc but at the tool paths level for machines without ai contour control

[Santa Fe]

What happened is the part is strong and well clamped on one end but the other end is a tall, thin wall so I get push of on that end. My options are to run it at normal feed but that will cause push off on the weak end of the part or I can run it slow to eliminate the push off  but that will increase my cycle about 25 minutes which I don't have to spare.

For the reasons above I want to start cutting at 72imp and gradually slow down to 24imp then on the back side start at 24ipm and along the cut gradually increase it to 72imp. and so on to all the 6 walls of the part going back and forth like that.

I can do the variable feed manually on the 2d toolpaths but 4 of the walls require swarf application toolpath and on those I haven't been successful with the variable feed.

 

Any/all help would be greatly appreciated.  

 

[Leon82]

Have you thought about mailing it down and steps with a thin wall method. The depth cuts in finishing screens have thin wall settings for adding finish cuts

[David Colin]

I guess there is no easy way to make what you need but here is how i would do it to get the job done for your multiaxis toolpaths:

- Save swarf toolpath "NCI" file

- Open this NCI file in a NCI capable backplotter/editor (CimcoEdit)

- Backplot and manually edit your feeds in NCI file

- Save NCI file and import it back into Mastercam operation manager with NCI import command

- Ghost original swarf toolpath and post