2D countour Transition Feed Rate_How to adjust it?

[alessiol]

Hi!

Basically I can not find a solution that allows to change the transition feed rate in a 2D countour. In this case I use 2D contour as rough operation with constant chip load to remove material fast. Operation works great, only thing the short green transition are at the same curring feed rate nad they slam to hard into the material. I would like either change them liek to the "lead in" feed rate or modifiy the angle so that they go at the same speed but with a shallow cut along an angle until to reach the final position to start the circular movement. I have tried ot change all the setting I see but dones't see to do much about it.

Thanks for the help!

[Anonymous]

You can set it in tool definition but if different, values in operation tab take priority.

[alessiol]

Hi,

That I know. The problem that the transition movements highlighted in the picture are done with cutting feed rate parameter. So lead in and out parameters are not affecting that situation. Maybe is something that Fusion team could add. Like a transition feed rate in the link on GB tab of 2D contour 

[Anonymous]

I am not sure what you mean by "transition feed rate", I find lead in / out sufficient if using contour as conservative roughing strategy but perhaps using 2D adaptive instead will suit your need better, load the tool once and keep it loaded throughout the cut, eliminating multiple tool engagement.

[seth.madore · Accepted solution]

At this time, it is not possible to change the feedrate of transition moves. That has been requested from time to time, and I think there are some tickets open to explore this, but fairly certain nothing has been worked on at this point.

[alessiol]

Ok thanks for info. I agree thst would be a needed feature. 2Dcountour is really powerful as rough operation but needs a feed rate transition to make it more adjustable. I guess we only need to wait 🙂 

[alessiol]

I understand what you mean but lead-in and lead-on don't control the in between transition movements. Lead-in regulates the feed to engage the cutting. Anyway yes I opted for 2d adaptive at the end but sometimes I find 2D contour a better strategy.

[Anonymous]

Whenever I can, I use 2D adaptive or bore rather then pocket or contour for roughing. I run mill-turns so my rotary tools are limited to 6000 or 4000 RPM's, very sensitive to chip load and  dept of cut, tool rigidity is laughing matter compared to vertical mill.

So, I don't push envelope on milling side of it but I make up for any losses by optimizing turning where possible.

[kogoe]

 I was having the same issues today. I noted that under the linking tab if you un-toggle the "keep tool down" radio button, the green transition moves lift up and become rapid moves. This may help your cycle time a bit, depending on your "heights" selections.

[alessiol]

THanks. No my problem wasn't the cicle time, they are too fast because they use cutting feedrate, while the possiblity to use a separate feed rate will be much more versatile. IF I have to get the tool up all the time will take forever then I would just use another strategy at that point.

[machiningKY76Q]

I had a similar problem in that I wanted to keep the tool down and have a rapid transition to the next cut but as you say you cannot alter the transition feed. I did however manage to get the results and wanted by altering the heights (see pic) and leave the ‘keep tool down’ box unchecked. This gave me a good tool path albeit a little dangerous but if you’re sure the path is clear then it’s ok (see tool path pic).

in your case you could do all of the above but in the post process screen alter the change to always use high feed and change your transition feed in there.

[stefanQQKRF]

You might want to change the POST file. In my case I added the following lines at the beginning of onCircular function:

function onCircular(clockwise, cx, cy, cz, x, y, z, feed) {

// add following code at the beginning of the onCircular function

if (movement != 2) {
    // no transitional move, thus don't change feed rate
    feed = feed;
} else {
    // transitional move, thus lower feedrate by 80%
    feed = Math.round(feed * 0.2);
}

//... leave the rest of the on Circular function as it is ...

}

Hope that can be of help - without warranty 🙂

Greetings

Stefan

[SGoldthwaite]

I'd like to see a setting for this in the Linking Tab

[mattdlr89]

@seth.madoreAny updates on this ticket?

Just come across it in a facing routine and would be nice to set the transitional feedrate.

[seth.madore]

@mattdlr89 sadly, I don't see any updates on the tickets I had found (CAM-9094 for example)

[brandogreene]

I'd like to see this feature as well. Seems to transition to the next cut at full cutting speed and my machine doesn't seem to like that. I have to re-home my machine after every time. Guess I'll just cut the cutting speed in half for now.

[bernhard.hornung]

I also want to emphasize that setting transition feed rate would be very nice to have. Something like a drop-down where you can select whether you want to use standard cutting, lead-in, ramp or rapid would work in my case.

[seth.madore]

Looking at our forum analytics, it seems that this thread is still generating a lot of views. For anyone visiting this page, be aware that we now have the Transition Feedrate option in every toolpath. This will allow you to apply a custom feedrate to these moves!

[alessiol]

Really happy to see this feature implemented. Thank you for spreading the news 🙂