Dog-leg rapids

[Leigh @ Kodiak]

Stupid Hass and their dog-leg rapids!

As far as I know, there is no way to change rapids to be linear, (in the control) so correct me if I'm wrong on that one.

 

Now, I know I can change my post so that all rapids are posted as fast feed rates, but we want to be able to maintain rapid override control. Is there any way to post a complete program with normal rapids, but have one operation with fast feeds posted instead?

[Watcher]

Yes it is possible. You need to set a parameter on the control to make the axes reach their destination simultaneously. I don´t know the parameter number though. It´s like on FANUCs.

 

JM2C

[Leigh @ Kodiak]

Yea, I have switched this parameter on other controls before, but havent managed to find the same thing on a hass. I think they forgot or something

[MACHINEMASTERG]

haas only dog legs in rapid whats the problum with that ??we never had any here ???

[htm01]

broken cutters when it smashes into the part!!

[Leigh @ Kodiak]

well, it's not a problem when I retract above the part, but in this case I can save alot of time staying down in the cavity, so I would rather do it that way. It sucks to have a crash on the machine when the toolpaths in master cam look just fine

[Thad]

quote:

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Now, I know I can change my post so that all rapids are posted as fast feed rates, but we want to be able to maintain rapid override control.

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Don't you have feed override control?

 

Thad

[Leigh @ Kodiak]

Sorry, let me clarify...we want independant feed and rapid control

[gcode]

The high feed roughing toolpaths will allow you you to select your rapid method.. G0 or fast G01

[Leigh @ Kodiak]

quote:

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The high feed roughing toolpaths will allow you you to select your rapid method.. G0 or fast G01

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Sadly, as of right now we only have mill level one

[Troy Gossett Indepak Inc.]

Couldn't you use "change at point" and fine tune the path of the rapid moves.

 

Or use another path that requires less rapid moves.

[Watcher]

Hi everyone!

 

I think that we changed the focus of the conversation, don´t you think? Please, don´t take it as offense (is not my intention at all), but RacerX needs to find out which parameter is gonna change his Hass behavior. I personally don´t think that changing strategies it is the best way to go. A strategy parameter is a very easy thing to forget.

Maybe eMastercam is not the best place to find out which parameter will save his a$$ though.

 

 

JM2C

[peon]

I asked the Haas repairmen about changing the dogleg moves to a straight move. They told me there is NO parameter and we're stuck with it. Sucks!!

[PeterM]

I don't know if you are doing a simple contour toolpath, a pocket, or a surface driven toolpath, so This may not be of any use. If you chain a point, you can turn on use entry point/use exit point, and/or you can also adjust the entry/exit feedrate to a high value. This might allow you to avoid the crash.

[Pierre Côté]

One trick to take into consideration.

 

If you set the Z axis part zero on the Top of your part, then it's became obvious, all rapid moves when Z axis is negative, could be control by your post at fast feed rate of the machine, with G01 moves (straight lines), all moves over Z axis (positive) can be output as G00 Rapid.

 

This is a safe methode to skip the dog legs moves.

[Pierre Côté]

Sorry for my explanation into previous post.

 

The software must be able to achived the above consideration, because of surfaces clearance with the tool.

 

My mistake sorry.

[Leigh @ Kodiak]

Yea, I guess it looks like I'm more or less stuck with it for now. I too called up the folks at Hass, and the guy says to me "...yeah, I get this same call at least once a week"

 

How hard would it be for Mastercam to include an option so show rapids as doglegs? Maybe sombody clever could make a chook that replaces all non rapids that are not 0,45,90,180 or 270 degrees into two moves. Sort of a "forced" dogleg if you will. How is that for backwards thinking?