Always Z retract after workplane change

[ifuASTJY]

Hi all,

I tried different thing to get this to work without success, done the machine configuration, machine configuration files but I don't see that this is related to my problem.

Basically I need that after each plane change that is not 0 degree of the B axis ( or rotation of the B axis) to do first a Z Cleareance positioning.

We are working with a swivel head that goes from -90 to +90 degree.

the post processor is the latest SINUMERIK 840D.

I found on the forum a pp that works exactly how I described but I need to put that information into our own post.

I attach both pps. and nc.

Here is a correct example from the Eco mill post, the order of x,y and Z changes according to plane angle.

; %_N_1001_MPF

N0 ; 

N1 ; Maschine: DMG ECOMILL 70 / Siemens 840D

N2 ; Programmiert mit Autodesk Inventor HSM

N3 ; Institut f. el. Maschinen, Antriebe und Bahnen

N4 ; 

N5 ; T28 D=40 CR=0 - face mill

N6 WORKPIECE(,,,"BOX",112,0,-62.302,80,42.024,31,-42.024,-31)

N7 G90 G94

N8 G71

N9 G64

N10 G17

N11 G0 SUPA Z-10 D0

N12 CYCLE800(1,"DMG",100000,27,0,0,0,0,0,0,0,0,0,0)

N13 ; Face1

N14 M9

N15 T28 D1

N16 M6

N17 S5000 M3

N18 G54

N19 CYCLE800(1,"DMG",100000,27,0,0,0,0,0,0,0,0,0,0)

N20 G0 X64.024 Y-19.5

N21 G0 Z15

N22 M9

N23 R1=2400 ; Schneidvorschub

N24 R3=2400 ; Schlichtvorschub

N25 R4=2000 ; Einfahrvorschub

N26 G1 Z-1 F0

N27 G1 X42.024 F=R4

N28 G1 X-42.024 F=R3

N29 G17

N30 G2 X-42.024 Y11.62 Z-1 CR=15.56 F=R1

N31 G1 X42.024 F=R3

N32 G1 Z15 F0

N34 ; Face2

N35 CYCLE800(1,"DMG",100000,27,0,0,0,0,90,0,0,0,0,0)

N36 G0 Z57.024

N37 G0 X84.302 Y-19.5

N38 R1=2400 ; Schneidvorschub

N39 R3=2400 ; Schlichtvorschub

N40 R4=2000 ; Einfahrvorschub

N41 G1 Z41.024 F0

N42 G1 X62.302 F=R4

N43 G1 X0 F=R3

N45 G2 X0 Y11.62 Z41.024 CR=15.56 F=R1

N46 G1 X62.302 F=R3

N47 G1 Z57.024 F0

N49 ; Reset plane & move to toolchanger

N50 ; 

N51 CYCLE800(1,"DMG",200000,27,0,0,0,0,0,0,0,0,0,1,,0)

N52 G0 SUPA Z-152.805 D0

N53 G0 SUPA X-750.1 Y-552.76 D0

N54 M30

Here is what our SINUMERIK840D pp is , the order of x,y and Z does not change according to plane angle.:

; %_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

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

Thanks

[ifuASTJY]

I found the problem when comparing the two posts.

If you download the latest Siemens SINUMERIK 840D pp, there is a missing "var" statement before the 

retracted = false;  in the 

function onSection()

Now it's working perfect.

I think the Siemens SINUMERIK 840D should be checked out and updated if needed. It could be a typo.

I am not a programmer just know the basics.

Thanks!

[ifuASTJY]

Nearly there, after a few nc outputs I notice the following:

1. That the order Z retract is not consistent through the program.

2. When doing a tool change again to square 1, no more Z retract before x and y when at 90 degree.

Take a look at my nc ouput now:

I attach my project and pp again.

; %_N_1001_MPF

N10 ; T="BU D11" D=11 CR=0 TAPER=135deg - drill

N11 ; T="BU D14" D=14 CR=0 TAPER=135deg - drill

N12 ; T="FR D40 Z4 AL" D=40 CR=0 - face mill

N13 G90 G94

N14 G71

N15 G64

N16 G17

N17 G0 SUPA Z799 D0

N18 CYCLE800(1,"",0,57,0,0,0,0,0,0,0,0,0,0)

N19 ; Face1

N20 T="FR D40 Z4 AL" D1

N21 L6

N22 T="BU D11"

N23 S5000 M3

N24 G54

N25 CYCLE800(1,"",0,57,0,0,0,0,0,0,0,0,0,-1)

N26 G0 X63.024 Y-19.5                                       // x and y correct because Z axis is far from part after tool change (N17 G0 SUPA Z799 D0)

N27 G0 Z15

N28 G0 Z0

N29 G1 X41.024 F2000

N30 G1 X-41.024 F2400

N31 G17

N32 G2 X-56.084 Y-4.44 CR=15.06

N34 G2 X-41.024 Y10.62 CR=15.06

N35 G1 X41.024 Z0

N36 G0 Z15

N38 G0 SUPA Z799 D0

N39 ; Face2

N40 CYCLE800(1,"",0,57,0,0,0,0,90,0,0,0,0,-1)

N41 G0 Z56.024                                               // Z retract is correct, if not we would have a collision.

N42 G0 X83.302 Y-19.5

N43 G0 Z41.024

N44 G1 X61.302 F2000

N45 G1 X0 F2400

N47 G2 X-15.06 Y-4.44 CR=15.06

N49 G2 X0 Y10.62 CR=15.06

N50 G1 X61.302 Z41.024

N51 G0 Z56.024

N53 G0 SUPA Z799 D0

N54 CYCLE800(1,"",0,57,0,0,0,0,0,0,0,0,0,0)

N55 ; Face1 (2)

N56 CYCLE800(1,"",0,57,0,0,0,0,0,0,0,0,0,-1)

N57 G0 Z15                                   //here the first operation again but X and Y are after Z, it should be again X and Y first  after N53 G0 SUPA Z799 D0

N58 G0 X63.024 Y-19.5

N59 G0 Z0

N60 G1 X41.024 F2000

N61 G1 X-41.024 F2400

N63 G2 X-56.084 Y-4.44 CR=15.06

N65 G2 X-41.024 Y10.62 CR=15.06

N66 G1 X41.024 Z0

N67 G0 Z15

N69 G0 SUPA Z799 D0

N70 ; Drill1

N71 M1

N72 T="BU D11" D1

N73 L6

N74 T="BU D14"

N75 S5000 M3

N76 G54

N77 CYCLE800(1,"",0,57,0,0,0,0,0,0,0,0,0,-1)

N78 G0 X-27.709 Y-15.405              //tool change here X and Y first then Z, correct, 0 degree plane

N79 G0 Z15

N80 M7

N81 G17

N82 F1000

N83 MCALL CYCLE81(5, 0, 5, -25, )

N84 X-27.709 Y-15.405

N85 X-0.702 Y10.176

N86 MCALL

N87 G0 Z15

N89 G0 SUPA Z799 D0

N90 ; Drill2

N91 M9

N92 M1

N93 T="BU D14" D1

N94 L6

N95 T="FR D40 Z4 AL"

N96 S2500 M3

N97 G54

N98 CYCLE800(1,"",0,57,0,0,0,0,90,0,0,0,0,-1)

N99 G0 X27.596 Y-2.304     //tool change here again X and Y first then Z, NOT correct, 90 degree plane, head will collide with part

N100 G0 Z56.024

N101 M7

N102 G17

N103 F400

N104 MCALL CYCLE81(46.024, 41.024, 5, 16.024, )

N105 X27.596 Y-2.304

N106 MCALL

N107 G0 Z56.024

N109 G0 SUPA Z799 D0

N110 G0 SUPA Y550 D0

N111 CYCLE800(1,"",0,57,0,0,0,0,0,0,0,0,0,-1)

N112 M30

Thanks

[ifuASTJY]

Hi all!

Any ideas here ?

Thanks

[andrea.amilo · Accepted solution]

Hi @ifuASTJY ,

if you need to have first movement along Z after each plane change that is not 0 degree of the B axis, I think you could add this simple modification to your postprocessor ( lines 1303 and 1304 ) :

    var initialPosition = getFramePosition(currentSection.getInitialPosition());
    // if (!retracted && !insertToolCall)
    if (abcFormat.format(abc.y) != 0) {
      if (getCurrentPosition().z < initialPosition.z) {
        writeBlock(gMotionModal.format(0), zOutput.format(initialPosition.z));
        zIsOutput = true;
      }
    }

It means that when B axis ( = rotation around Y ) is different from 0 postprocessor will write Z first.

Please test it carefully and let me know.

[ifuASTJY]

Hi,

Yes, this works now, very glad now, I will keep an eye on it but I see the code is good, I will output a more complex part and check it out.

I notice one thing ( this is a bit off topic) when I set machine.configuration "table= false"  it outputs XYZ in a single line, when it's true I have XY on one line and Z on the next line.

In our case we do not have a table, we only have rotary B axis.

For now I just keep it on " true" and the code is fine.

Many thanks this will save us a tone of time.

!

[ifuASTJY]

Hello @andrea.amilo ,

So after a few tests I have the following.

All is good except when it makes a tool change and keeps the same angle. The second tool does not retract on Z anymore. 

Can you please take another look?

Thanks

N112 ; B=90

N113 M9

N114 M1

N115 T="BU D14" D1

N116 L6

N117 T="BU D12 LUNG"

N118 S2500 M3

N119 G54

N120 CYCLE800(1,"",0,57,0,0,0,0,90,0,0,0,0,-1)

N121 G0 Z40

N122 G0 X21.946 Y-2.304

N123 M7

N124 G17

N125 F400

N126 MCALL CYCLE81(30, 25, 5, 0, )

N127 X21.946 Y-2.304

N128 MCALL

N129 G0 Z40

N131 G0 SUPA Z799 D0

N132 ; B=90

N133 M9

N134 M1

N135 T="BU D12 LUNG" D1

N136 L6

N137 T="FR D10 Z4"

N138 S3000 M3

N139 G54

N140 CYCLE800(1,"",0,57,0,0,0,0,90,0,0,0,0,-1)

N141 G0 X21.946 Y-2.304

N142 G0 Z40

N143 M7

N144 G17

N145 F420

N146 MCALL CYCLE81(30, 25, 5, 0, )

N147 X21.946 Y-2.304

N148 MCALL

N149 G0 Z40

N151 G0 SUPA Z799 D0

N152 CYCLE800(1,"",0,57,0,0,0,0,0,0,0,0,0,0)

[andrea.amilo]

HI @ifuASTJY ,

could you please write exactly what you expects ?

...

N135 T="BU D12 LUNG" D1
N136 L6
N137 T="FR D10 Z4"
N138 S3000 M3
N139 G54

                                                                 <--- Do you need G0 SUPA Z here ?
N140 CYCLE800(1,"",0,57,0,0,0,0,90,0,0,0,0,-1)
N141 G0 X21.946 Y-2.304

...

Thanks

[mbl_busse]

Hey there 🙂

I think the problem that @ifuASTJY has is the order in wich the machine approaches the start position of the cycle.

In line 121/122 it's Z first and then X&Y.

In line 141/142 it's X&Y first and then Z.

He want's to approach Z first, because otherwise the spindle may crash with the workpiece. I would't set it up like this, in my opinion X&Y first and then Z ist much safer, but the solution could be to add a retract between the orientation of the b-axis and the approaching.

In Heidenhain this would be M140 MB MAX, I don't know the command for Siemens.

The line to change should be in the OnSection function.

There are a few lines wich define the approaching-strategy if the machineconfiguration is a HeadConfiguration.

Hopefully this helps a bit.

Greetings from Germany

[ifuASTJY]

Thank you for putting your time in my request. 

I try to simplify my problem with a sketch drawing.

Basically there are two cases:

Case 1 when B angle is 0 degree. - here I always need first approach to be X and Y and the Z Clearance Plane ( This is already working)

Case 2 is when B angle is any other angle then 0 degree - here I always need first approach to be Z Clearance Plane and then XY approach.

Keep in mind that every time when the work plane changes I have a Z retract ( SUPA Z799 D0) so like this it is safe to do Z Clearance plane first

I hope with your help I explained my needs better than before.

Thank you for your effort

[andrea.amilo · Accepted solution]

Hi @ifuASTJY ,

I think you could add a specific check for each tool changes ( at line 1318 ) :

    if (abcFormat.format(abc.y) != 0) {
      if (getCurrentPosition().z < initialPosition.z || insertToolCall) {
        writeBlock(gMotionModal.format(0), zOutput.format(initialPosition.z));
        zIsOutput = true;    
      }
    }

Please test it carefully and let me know.