topic Re: Problem enable only bAxis and cAxis in HSM Post Processor Forum

Problem enable only bAxis and cAxis

cosmedsrl — Thu, 25 Jun 2020 22:23:38 GMT

Hi everyone,

I have a 5-axis with Heidenhain system, where the head rotates on the Y axis (bAxis) and the table rotates on the Z axis (cAxis) the machine is not enabled for rotation on the X axis (aAxis), I followed the guide for " disable "aAxis and enable only bAxis and cAxis as reported below:

else if (true) {
    // NOTE: setup your machine here
    //var aAxis = createAxis({coordinate:0, table:true, axis:[1, 0, 0], range:[-120.0001, 120.0001], preference: properties.preferTilt});
    var bAxis = createAxis({coordinate:1, table:true, axis:[0, 1, 0], range:[-5, 90], preference:1});
    var cAxis = createAxis({coordinate:2, table:true, axis:[0, 0, 1], range:[-360, 360], cyclic:true});
    machineConfiguration = new MachineConfiguration(bAxis, cAxis);

    setMachineConfiguration(machineConfiguration);
    optimizeMachineAngles2(0); // using M128 mode
  }

the problem is that when I go to do the operation where I set the tool orientation (2D Contour ) in the generated file it writes me a "wrong" positioning or better compiles me aAxis and bAxis instead of bAxis and cAxis, as follows :

11 PLANE SPATIAL SPA-90 SPB+90 SPC+0 TURN FMAX SEQ-

if instead he tries to do an operation in "continuous" mode:

this is the result of setting the axes

16 PLANE SPATIAL SPA+0 SPB+27.991 SPC-133.219 STAY

and then afterwards it works "correctly" with bAxis and cAxis, being a 5-axis simultaneous machining

my question is:

as it is possible to set in the PP not with 5 simultaneous axes but a simple Tool Orientation by rotating exclusively bAxis and cAxis.

Re: Problem enable only bAxis and cAxis

andrea.amilo — Fri, 26 Jun 2020 06:39:14 GMT

Hi @cosmedsrl ,

I think that your heidenhain postprocessor is working fine because PLANE SPATIAL doesn't rotate A and B axis, but it just defines SPA, SPB (and SPC) as solid angles. Your controller should rotate B and C thanks to 'TURN' option on PLANE SPATIAL command line.

Otherwise you could change the Property 'Tilted workplane' to 'Use Cycle19' and you would have something like this:

Please test it carefully and let me know.

Re: Problem enable only bAxis and cAxis

cosmedsrl — Mon, 29 Jun 2020 05:51:50 GMT

@andrea.amilo

sorry for the delay, I wanted to do some tests with Cycle 19, this is what emerged:

my Hermle machine needs the F function next to CYCL DEF 19.0 WORKING PLANE otherwise it doesn't know how fast to drive
before a rotation change it should reset the zeros but not the
CYCL 19 should rotate "close" to the medium being that it makes continuous double rotation unlike the SPATIAL which rotates the axes individually
when passing from B + 0 C + 0 for example B + 90 and C-90 does not correctly recognize the previous zero and collides
do you think there is no way to set the SPB and SPC rotations (would I be fine also not continuously or do I rotate SPB and ended the rotation rotate SPC?

I currently have a post processor that I use on FeatureCam which is based on the SPB and SPC rotation and this machine reads it perfectly.

Thanks

Re: Problem enable only bAxis and cAxis

cosmedsrl — Mon, 09 Nov 2020 14:37:34 GMT

@andrea.amilo
is there any news?

thanks

Re: Problem enable only bAxis and cAxis

andrea.amilo — Mon, 16 Nov 2020 15:48:13 GMT

Hello @cosmedsrl ,

I've tried to modify 'setWorkPlane' function to have a PLANE SPATIAL function using only SPB and SPC arguments.

This is the code I made: the highlighted lines are the modified one:

Try to comment line 548 and to add lines from 549 to 553.

Test it carefully and let me know.

Please remember that we can provide an help to create your own postprocessors.
If you need a specific customization, e.g. a porting from an existing FeatureCAM post, I think the best solution is to contact one of our partners. You can see here any clarification:

https://forums.autodesk.com/t5/hsm-post-processor-forum/hsm-post-adjustments-needed-find-your-right-contact-here/td-p/6652728