[davidturnswood]

ccc.rdk(Size: 4.23 MB / Downloads: 151)嗨,伙计们,

I am running into a problem repeatedly on both sides of the mold I'm attempting to machine. My cutting tool - (1/4" straight router bit) does fine most of the time, but on occasion decides to cut corners as it is descending (and also occasionally ascending) a parallel pass in the shape of stair-steps. It is cutting off about 5mm of material it shouldn't be removing from the bottom step - on both ends of the mold, often, but not always.

The strange thing is it only does this in some areas.. It also happened on the flip side of the mold (match plate mold, so it is two sided). However, it didn't happen as often.

I have tried playing with the continuous path settings - both turned on and off with my robot, as well as running at fast and very slow speeds, and none of those seem to make any difference. Rounding is set at 1.

There is something happening between the RoboDk simulation and my robot arm that is corrupting the path I need it to take - be that the way the coordinates are post-processed, or the way my arm is reading them. It's as if it forgets or ignores these areas. Perhaps some of the movements are supposed to be arcs but are read as straight line movements?

(In Fusion 360)
Both-way milling with both tolerance and smoothing factor set at 1mm. I imported a grbl nc file from fusion to RoboDk (I don't yet have the plugin for Fusion. Could that be helpful for this scenario?).


There doesn't seem to be much rhyme or reason as to when it cuts these corners, but it is really messing things up for me. It is hit and miss - on the x+ end of my piece it often cuts correctly on the u-cut and cuts the corner on the down cut. But not always. I end up with a straight line cut as opposed to a convex shape.

Using the Adept V+ custom for Staubli post processor. This program is about 22,000 lines of code intended to make refining cuts - not finishing.

Any ideas on what could be causing this? It's quite frustrating and is ruining several days of work.

One thing that is for sure - the path looks perfect in both Fusion and Robodk. Especially when viewed from underneath the model.

Thanks very much,

David

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You can see here the 45 degree straight line that should be a convex rounded curve (often it would cut the curve only to cut it off on the subsequent pass).