Calling all Roders programmers

[Brian B 74]

What is the benefit to running a Roders machine program with all G0 and G1 commands (no G2/G3)? Is this the norm for this type of machine?

[peon]

SPEED! The true high speed machining centers can calculate point to point faster than the arc moves. You can demonstrate this yourself with the arc filter. On our plastic molds, I toolpath with a .0002" tolerance and drag my "surface quality" slider to best and check the "present arcs as line segmets" box. This will post out as all point to point and the machine can accelerate and decelerate out of the corners and radii MUCH faster than arcs. On our older machines, I drag the "NC program length" slider to "short" and post out many arcs because they can't handle the code. When you post point to point, you're verify speed will suffer dramatically or the verify will fail. You have many options to sort out and find the balance between your surface finish quality, machining speed and verify time.

[Brian B 74]

What about cutter comp for fit areas? Do you use it? Or do you do point to point - measure - and go back into MCX and adjust as necessary?

[peon]

I do not use point to point on the 2d toolpaths.

[pip]

Point to point here aswell, accept in 2d cutting. The machine works out all the dynamics.

I keep the filtering turn off with all paths. Gives the best result on ours...

[Brian B 74]

I finally have some time on my hands to investigate this further. Our post here does not post out any G2 or G3 commands - all point to point. For those of you who do 2d contouring with G2 and G3's could you send me some sample code? And what about cutter comp? Do you use it for for fitting dimensions? People here don't know how to use it so we have no idea. I am just trying to keep the machinist from coming in here every time he needs to adjust a dimension by a few tenths.

 

Thanks again for all the help!

[Brian B 74]

I got the cutter comp to work on geometry that is square. When trying to comp a hole I am getting strange results.

 

With comp set to 0 the path simulates (in the control) correctly. When I add any kind of comp to the hole tool path it leads in does one revolution to the bottom (1 helical move) and then leads out.

 

I have arc output set to break arcs at quadrants so there is an X Y Z I J command in every line and get the same results.

 

Any ideas how to fix this? Parameter somewhere?

[mig]

I got the cutter comp to work on geometry that is square. When trying to comp a hole I am getting strange results.

 

With comp set to 0 the path simulates (in the control) correctly. When I add any kind of comp to the hole tool path it leads in does one revolution to the bottom (1 helical move) and then leads out.

 

I have arc output set to break arcs at quadrants so there is an X Y Z I J command in every line and get the same results.

 

Any ideas how to fix this? Parameter somewhere?

 

can you post your g-code here?

[Brian B 74]

This code worked:

 

Good Code

 

This code is giving me grief:

 

Bad Code

 

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