topic Re: Order for X, Y and Z after tilting in HSM Post Processor Forum

Order for X, Y and Z after tilting

Anonymous — Wed, 06 Dec 2017 21:23:20 GMT

Hey guys!

I have a problem with the Post Processor for the DMG Ecomill of our University.

This is the code I get atm:

N14 ; Planen1
N15 M9
N16 T2 D1
N17 M6
N18 T1
N19 S1617 M3
N20 G54
N21 CYCLE800(1,"DMG",100000,27,0,0,0,0,0,45,0,0,0,0)
N22 G0 X57.986 Y-17.678
N23 G0 Z32.678
N24 M9
N25 R1=1455.1 ; Schneidvorschub
N26 R3=1000 ; Schlichtvorschub
N27 R4=1455.1 ; Einfahrvorschub
N28 G0 Z22.678
N29 G1 Z17.321 F=R4
[...]

N58 ; Planen1 (2)
N59 CYCLE800(1,"DMG",100000,27,0,0,0,90,0,45,0,0,0,0)
N60 G0 Z32.678
N61 G0 X57.986 Y-17.678
N62 R1=1455.1 ; Schneidvorschub
N63 R3=1000 ; Schlichtvorschub
N64 R4=1455.1 ; Einfahrvorschub
N65 G0 Z22.678
N66 G1 Z17.321 F=R4

[...]

N95 ; Planen1 (3)
N96 CYCLE800(1,"DMG",100000,27,0,0,0,180,0,45,0,0,0,0)
N97 G0 Z32.678
N98 G0 X57.986 Y-17.678
[...]

As you see, the order of the X,Y // Z move differe. The first move after tilting the tool for the first time is X & Y and THEN Z, after this all the other moves are Z first and then X & Y, until I change to the next tool where this repeats.

Now it's very important that the tool moves in X & Y BEFORE it moves in Z, because both, the b & c axis, are in the table, wich means depending on the position and the lenght of the tool it can cause crashes, if it moves in Z first.

But I can't seem to find the right line in the Post Processor- I use a customized version of the Siemens 840D Post Processor.

Can someone give me a hint on wich line I have to change?

Best regards

Re: Order for X, Y and Z after tilting

GeorgeRoberts — Thu, 07 Dec 2017 08:24:50 GMT

Hello,

Thanks for posting such a detailed request! Would it be possible to upload your custom post processor? That way I can advise on exactly what line needs changing

cheers

Re: Order for X, Y and Z after tilting

Anonymous — Thu, 07 Dec 2017 21:59:17 GMT

Hello there,

I attached the Postprocessor.

Greetings

Re: Order for X, Y and Z after tilting

AchimN — Tue, 12 Dec 2017 12:25:06 GMT

@Anonymous I had a look into your post processor and found out that retracts are fully disabled if there is a new workplane, thats why the order is wrong for positioning XYZ axis since the machine is not fully retracted.

Also, the onRapid() function is renamed into your post, so the post cannot output rapid motions anymore.

Side note, you don´t have to translate the feedrate names, this is handled by the post itself. Just make sure that the file called "common.de.lang" (which is located into the default post processor folder) is located into your post processor folder.

I really suggest you to download the latest siemens 840d post processor from the library and only change the post processor to use your machine configuration settings.

http://cam.autodesk.com/posts/?p=siemens-840d

Re: Order for X, Y and Z after tilting

Anonymous — Wed, 13 Dec 2017 12:40:08 GMT

@AchimN wrote:
@Anonymous I had a look into your post processor and found out that retracts are fully disabled if there is a new workplane, thats why the order is wrong for positioning XYZ axis since the machine is not fully retracted.

Also, the onRapid() function is renamed into your post, so the post cannot output rapid motions anymore.
Side note, you don´t have to translate the feedrate names, this is handled by the post itself. Just make sure that the file called "common.de.lang" (which is located into the default post processor folder) is located into your post processor folder.

I really suggest you to download the latest siemens 840d post processor from the library and only change the post processor to use your machine configuration settings.
http://cam.autodesk.com/posts/?p=siemens-840d

Ahhh, thank you very much!

I downloaded the new version of the Postprocessor- noticed the changes directly.

So there are only two questions left for me.

As it is in the moment, the code from the Postprocessor fully retracts and resets workplane after every step, even if the next step requires a new workplane- this produces some unnecessary mevement:

N179 G0 SUPA Z-10 D0
N180 CYCLE800(1,"DMG",100000,27,0,0,0,0,0,0,0,0,0,0)

N181 ; Bohrfrasen1
N182 M1
N183 T1 D1
N184 M6
N185 T2
N186 S8276 M3
N187 G54
N188 CYCLE800(1,"DMG",100000,27,0,0,0,0,0,45,0,0,0,0)
N189 G0 X0 Y-19.693
N190 G0 Z32.678

Also, you said we should confgire the Postprocessor to use our MachineConfiguration- thats something we never got used to, because we haven't had a HSM class. Everything we know so far we teached ourself. How can I configure a MachineConfiguration for the Post to use?

Re: Order for X, Y and Z after tilting

AchimN — Wed, 13 Dec 2017 12:55:48 GMT

Well, safety first

Since we make these posts available to anyone we have to make sure that the posts are safe for production use.

The reason why you see a Cycle800 reset here is that there is a tool call required.

Imagine your table would be rotated to 90deg and you have a large tool mounted. Now the machine would move to the tool changer while your table is still at 90deg...potentially dangerous.

In your old post i´ve seen that you have a machine configuration activated, so i thought you would like to have that again in the new post.

Please have a look here if you´d like to specify a maschine configuration:

https://forums.autodesk.com/t5/hsm-post-processor-forum/how-to-set-up-a-4-5-axis-machine-configuration/td-p/6488176

Re: Order for X, Y and Z after tilting

Anonymous — Wed, 13 Dec 2017 13:11:31 GMT

Haha yeah, of course. I'm totally on your side- if the Tool has to be changed, the Axis should be reset- even though on our machine this should be no problem.

But the reset of Cycle800 takes place even if there is no toolchange required (maybe the line of code i copied was a bid stupid :D)

[...]

N56 G1 X-25 F=R3
N57 G0 Z32.678
N58 G17
N59 G0 SUPA Z-10 D0
N60 CYCLE800(1,"DMG",100000,27,0,0,0,0,0,0,0,0,0,0)

N61 ; Planen1 (2)
N62 CYCLE800(1,"DMG",100000,27,0,0,0,90,0,45,0,0,0,0)
N63 D1
N64 G0 X57.986 Y-17.678

[...]

From my pov this is a situation where the machine doesn't need to reset before it instantly tilts again.

Regarding machine configuration: If it's all done within the postprocessor, then I'm aware of what it is, yeah. I thought there'd be a seconds file wich defines our machine and is then loaded within the postprocessing-process.

And finally regarding the my changes of the translations: if we need this file in our personal-postprocessor folder this explains our trouble there. But renaming this wasn't that much work, so

Re: Order for X, Y and Z after tilting

Anonymous — Wed, 13 Dec 2017 14:01:06 GMT

Quick question- could it be this line? Removing "newWorkPlane" in Line 662 seems to do exactly as I want- it removes the SUPA Z-10 and the reset of the workplane, but only if the next section starts with a new workplane. If it's a toolchange or the end of the program it does make this security move. 🙂

Re: Order for X, Y and Z after tilting

AchimN — Wed, 13 Dec 2017 15:12:44 GMT

Removing "newWorkPlane" in line 662 would result into the same issue you had before regarding the order of XYZ positioning as well as missing retracts.

You could try to change code around line 667 from this:

    if (newWorkPlane) {
      setWorkPlane(new Vector(0, 0, 0), false); // reset working plane
    }

to this:

    if (insertToolCall) {
      setWorkPlane(new Vector(0, 0, 0), false); // reset working plane
    }

Please test carefully.

Re: Order for X, Y and Z after tilting

Anonymous — Wed, 13 Dec 2017 15:01:46 GMT

Allright, I'll try this out and see what the code looks like. Either way we will be very careful with this new code.

Thank you for your help, the support here is outstanding.

Greetings from Germany

Re: Order for X, Y and Z after tilting

AchimN — Wed, 13 Dec 2017 15:04:35 GMT

You´re welcome. Greetings from Germany from my side as well

Re: Order for X, Y and Z after tilting

ifuASTJY — Fri, 29 Nov 2019 13:46:16 GMT

Hello guys,

Maybe you can help,

I'm facing the same approximately the same problem.

We have a Swivel head Machine with a B axis from -90 to +90 degree sinumerik 840D controller.

Problem is X and Y are posted before Z retract also when at any other angle that is not 0 degree.

This causes a collision.

I already tried and setup correctly machine axis and machine configuration file, from what I can tell this retract is not dependent on the above mentioned.

Any idea where to change the pp so only when the swivel head is not at 0 degree to output Z retract first and the X,Y positions.

Using the latest Sinumerik 840D post.

Thanks!

; %_N_1001_MPF

N10 ; T="FR D40 Z4 AL" D=40 CR=0 - face mill

N11 G90 G94

N12 G71

N13 G64

N14 G17

N15 G0 SUPA Z799 D0

N16 CYCLE800(1,"",0,57,0,0,0,0,0,0,0,0,0,0)

N17 ; Face1

N18 T="FR D40 Z4 AL" D1

N19 L6

N20 S5000 M3

N21 G54

N22 CYCLE800(1,"",0,57,0,0,0,0,0,0,0,0,0,-1)

N23 G0 X64.024 Y-19.5

N24 G0 Z15

N25 G0 Z-1

N26 G1 X42.024 F2000

N27 G1 X-42.024 F2400

N28 G17

N29 G2 X-57.584 Y-3.94 CR=15.56

N31 G2 X-42.024 Y11.62 CR=15.56

N32 G1 X42.024 Z-1

N33 G0 Z15

N35 G0 SUPA Z799 D0

N36 ; Face2 (90 degree swivel)

N37 CYCLE800(1,"",0,57,0,0,0,0,90,0,0,0,0,-1)

N38 D1

N39 G0 X84.302 Y-19.5

N40 G0 Z57.024

N41 G0 Z41.024

N42 G1 X62.302 F2000

N43 G1 X0 F2400

N45 G2 X-15.56 Y-3.94 CR=15.56

N47 G2 X0 Y11.62 CR=15.56

N48 G1 X62.302 Z41.024

N49 G0 Z57.024

N51 G0 SUPA Z799 D0

N52 G0 SUPA Y550 D0

N53 CYCLE800(1,"",0,57,0,0,0,0,0,0,0,0,0,-1)

N54 M30

Re: Order for X, Y and Z after tilting

ifuASTJY — Sun, 01 Dec 2019 20:50:26 GMT

I found my problem, I put it in an other post:

Z retract missing var statement

Thanks