I wouldn't bother with G54.2 or G54.4 for your machine, there aren't many advantages to them for that style machine. You also need parameter F144 bit 1 = 1 and SU158 bit 3 = 1 Z5.0 H#3020 (RE-ACTIVATE PROBE TOOL LENGTH) You need to call "G43 P0" to reactivate the probe length once under G68.2.
Probing with Renishaw inspection plus is supported under G68.2, but there is an extra step involved. From the looks of it, I'm guessing eulerian as well, but it can be confusing. What you need to do is figure out what method your Doosan defaults to and what method fusion is outputting.
I generally use eulerian or roll, pitch, yaw that's also how most CAM software are setup. Here are all the setting methods:Ģ Vector - G68.2 P3 (the one you seem to be currently running) Mazaks default to the Eulerian angles method for G68.2. If you're where I think you are, I'm pretty sure I know what's going on. It is all I use for 3+2 work, the machine will do all calculations for part movement automatically. You will be fine using G68.2 for what you need to do. Feel free to give us a call to discuss your problem in more detail, you can PM me here too. Hey dcrace, I work out of the Mazak northeast office. What Doosan machine do you have? Email me at the below address and I can send you what I have on G68.2.
Default is Eulers.Įdit: I work for Doosan. Eulers Angles and simple roll, pitch and yaw. On your Doosan, you should have DCPi in your EOP screens.Īlso, Fanuc provides 5 different types of G68.2, 2 of which are most common. But that means you will have to maintain those kinematics parameter.
In fact, there is a distinct advantage because G68.2 will use the built in kinematics parameters just like G43.4 (TCP) does in full 5 axis machining. There is absolutely nothing wrong with using G68.2. On a B Axis machine, there will be an additional rotation, the K value in your case. Your output will not be the same between an A Axis machine and a B Axis machine. It's better understood on an A Axis machine because that's how the rotations take place with Eulers Angles. That's not the fault of Fanuc but the mechanics of Eulers Angles. You will need to read it a couple of times to wrap your head around what is going on.
The Fanuc 5 axis manual has a very informative chapter explaining it's use. If the simple way is to position the rotary, Call up G54.2 and program off the origin of the part, then sign me up I have also seen talk about a macro to probe the part, calculate the difference from COR and populate the G54.2 or G54.4 but haven't seen a complete or proven example for the Mazak. If anyone can explain, it would be appreciated as I haven't yet found a complete description of the tilted workplane or if the part can be programmed using G54.2/G54.4 using the probing cycles. Once again, confusing me as the explanations I have found are confusing. Once he came in and assisted in getting this running, he changed the program to use a DIFFERENT style of G68.2 programming because he said it had to be that way because we probe the parts?G0B-90.C90. The apps guy took our original Doosan program and modified it calling up G54.2 after positioning the rotary: When we bought the machine, we were told to program using G54.2 dynamic work offset and also sold the G54.4 WSEC option ($900.00) and we wouldn't need to use G68.2? Part is programmed from the common origin regardless of rotary position.
Due to some tight true position tolerance, we also probe each part when loaded on the fixture for X/Y pos. I did not write the original program, so I am still trying to understand how the G68.2 is defined. We run these parts in another 5 axis (Doosan, A is along X axis) using G68.2 coordinate rotation.
Hoping someone can shed some light on my brain-melting confusion of 5 axis programming.