Cycle 1412 INCLINED EDGE PROBING

Application

Touch probe cycle 1412 allows you to determine workpiece misalignment by probing two points on an inclined edge. The cycle determines the rotation based on the difference between the measured angle and the nominal angle.

If you program Cycle 1493 EXTRUSION PROBING before this cycle, you can repeat probing points in a given direction over a specified distance.

Cycle 1493 EXTRUSION PROBING

  • Cycle 1412 additionally offers the following functions:
  • If the probing position relative to the current datum is unknown, you can run the cycle in semi-automatic mode.
  • Semi-automatic mode

  • If you determine the actual position in advance, you can then transfer it to the cycle as the actual position.
  • Transferring the actual position

Cycle sequence

cyc1412
  1. Following the positioning logic, the control positions the touch probe to the touch point 1 at rapid traverse FMAX_PROBE.
  2. Positioning logic

  3. The control then moves the touch probe to set-up clearance Q320 at rapid traverse FMAX_PROBE. The sum of Q320, SET_UP, and the ball-tip radius is taken into account when probing in any probing direction.
  4. Next, the touch probe moves to the entered measuring height and probes the first touch point at the probing feed rate F from the touch probe table.
  5. The control retracts the touch probe by the safety clearance in the direction opposite to the direction of probing.
  6. If you programmed retraction to clearance height Q1125, the touch probe returns to clearance height.
  7. The touch probe then moves to the touch point 2 and probes again.
  8. Finally, the control retracts the touch probe to the clearance height (depending on Q1125) and saves the measured values in the following Q parameters:

Q parameter
number

Meaning

Q950 to Q952

Measured position 1 in the main axis, secondary axis, and tool axis

Q953 to Q955

Measured position 2 in the main axis, secondary axis, and tool axis

Q964

Measured basic rotation

Q965

Measured table rotation

Q980 to Q982

Measured deviations of touch point 1

Q983 to Q985

Measured deviations of touch point 2

Q994

Measured angle deviation of basic rotation

Q995

Measured angle deviation of table rotation

Q183

  • Workpiece status
  • –1 = Not defined
  • 0 = Good
  • 1 = Rework
  • 2 = Scrap

Q970

If you have programmed Cycle 1493 EXTRUSION PROBING before:

Mean value of all deviations from the ideal line of the first touch point

Q971

If you have programmed Cycle 1493 EXTRUSION PROBING before:

Mean value of all deviations from the ideal line of the second touch point

Notes

 
Notice
Danger of collision!
If you do not retract the touch probe to clearance height between two objects or touch points, there is danger of collision.
  1. Always move to clearance height between objects or touch points
 
Notice
Danger of collision!
When running touch probe cycles 444 and 14xx, no coordinate transformations must be active (e.g., Cycles 8 MIRRORING, 11 SCALING FACTOR, 26 AXIS-SPECIFIC SCALING, TRANS MIRROR).
  1. Reset any coordinate transformations before the cycle call.
  • This cycle can only be executed in the FUNCTION MODE MILL machining mode.
  • If you program a tolerance in Q1100, Q1101, or Q1102, then this tolerance applies to the programmed nominal positions instead of to the touch points along the inclined edge. Use the parameter TOLERANCE QS400 to program a tolerance for the surface normal along the inclined edge.
  • Note about rotary axes:
  • When determining the basic rotation in a tilted working plane, keep the following in mind:

    • If the current coordinates of the rotary axes and the defined tilt angles (3-D rotation window) match, the working plane is consistent. The control calculates the basic rotation in the input coordinate system I-CS.
    • If the current coordinates of the rotary axes and the defined tilt angles (3-D rotation window) do not match, the working plane is inconsistent. The control calculates the basic rotation in the workpiece coordinate system W-CS, based on the tool axis.

    In the optional machine parameter chkTiltingAxes (no. 204601), the machine manufacturer defines a check verifying the tilting situation. If no checking is configured, the cycle always assumes that the working plane is consistent. The basic rotation is then calculated in the I-CS.

Aligning the rotary table axes:

  • The control can align the rotary table only if the measured rotation can be compensated using a rotary table axis. This axis must be the first rotary table axis (as viewed from the workpiece).
  • To align the rotary table axes (Q1126 not equal to 0), you need to adopt the rotation (Q1121 not equal to 0). Otherwise, the control will display an error message.

Cycle parameters

Help graphic

Parameter

cyc1412_1

Q1100 1st noml. position of ref. axis?

Absolute nominal position at which the inclined edge begins in the main axis.

Input: –99999.9999...+99999.9999 or optionally ?, +, -, @

Q1101 1st noml. position of minor axis?

Absolute nominal position at which the inclined edge begins in the secondary axis.

Input: –99999.9999...+99999.9999 or optional input (see Q1100)

Q1102 1st nominal position tool axis?

Absolute nominal position of the first touch point in the tool axis

Input: –99999.9999...+9999.9999 or optional input (see Q1100)

QS400 Tolerance value?

Tolerance band monitored by the cycle. The tolerance defines the deviation permitted for the surface normals along the inclined edge. This deviation is determined between the nominal coordinate and the actual coordinate of the workpiece.

  • Examples:
  • QS400 ="0.4-0.1": Upper dimension = nominal coordinate +0.4; lower dimension = nominal coordinate –0.1. The following tolerance band thus results for the cycle: "nominal coordinate +0.4" to "nominal coordinate –0.1"
  • QS400 =" ": No tolerance band.
  • QS400 ="0": No tolerance band.
  • QS400 ="0.1+0.1" : No tolerance band.

Input: Max. 255 characters

cyc1412_2

Q1130 Nominal angle for 1st line?

Nominal angle of the first straight line

Input: -180...+180

Q1131 Probing direction for 1st line?

Probing direction for the first straight line:

+1: The control rotates the probing direction by +90° with respect to the nominal angle Q1130

-1: The control rotates the probing direction by –90° with respect to the nominal angle Q1130

Input: –1, +1

Q1132 First distance on 1st line?

Distance between the beginning of the inclined edge and the first touch point. This value has an incremental effect.

Input: -999.999...+999.999

Q1133 Second distance on 1st line?

Distance between the beginning of the inclined edge and the second touch point. This value has an incremental effect.

Input: -999.999...+999.999

Q1139 Plane for object (1-3)?

Plane in which the control construes the nominal angle Q1130 and the probing direction Q1131.

1: The nominal angle is in the YZ plane.

2: The nominal angle is in the ZX plane.

3: The nominal angle is in the XY plane.

Input: 1, 2, 3

cyc1412_3

Q320 Set-up clearance?

Additional distance between touch point and ball tip. Q320 is in addition to the SET_UP column in the touch probe table. This value has an incremental effect.

Input: 0...99999.9999 or PREDEF

Q260 Clearance height?

Coordinate in the tool axis at which no collision between touch probe and workpiece (fixtures) can occur. The value has an absolute effect.

Input: –99999.9999...+99999.9999 or PREDEF

Q1125 Traverse to clearance height?

Positioning behavior between the touch points:

–1: Do not move to clearance height.

0: Move to clearance height before and after the cycle. Pre-positioning occurs at FMAX_PROBE.

1: Move to clearance height before and after each object. Pre-positioning occurs at FMAX_PROBE.

2: Move to clearance height before and after each touch point. Pre-positioning occurs at FMAX_PROBE.

Input: –1, 0, +1, +2

Q309 Reaction to tolerance error?

Reaction when tolerance is exceeded:

0: Do not interrupt program run when tolerance is exceeded. The control does not open a window with the results.

1: Interrupt program run when tolerance is exceeded. The control opens a window with the results.

2: The control opens a window with the results if the actual position is in the scrap range. Program run is interrupted. The control does not open a window with the results if rework is necessary.

Input: 0, 1, 2

Q1126 Align rotary axes?

Position the rotary axes for inclined machining:

0: Retain the current position of the rotary axis.

1: Automatically position the rotary axis, and orient the tool tip (MOVE). The relative position between the workpiece and touch probe remains unchanged. The control performs a compensating movement with the linear axes.

1: Automatically position the rotary axis, and orient the tool tip (MOVE). The relative position between the workpiece and touch probe remains unchanged. The control performs a compensating movement with the linear axes.

Input: 0, 1, 2

Q1120 Transfer position?

Define which touch point will be used to correct the active preset:

0: No correction

1: Correction based on the 1st touch point

2: Correction based on the 2nd touch point

3: Correction based on the averaged touch point position

Input: 0, 1, 2, 3

Q1121 CONFIRM ROTATION?

Define whether the control will use the determined misalignment as a basic rotation:

0: No basic rotation

1: Set basic rotation: The control transfers the misalignment to the preset table as basic transformations.

2: Rotate the rotary table: The control transfers the misalignment to the preset table as offset.

Input: 0, 1, 2

NC programs contained in this User's Manual are suggestions for solutions. The NC programs or individual NC blocks must be adapted before being used on a machine.

  • Change the following contents as needed:
  • Tools
  • Cutting parameters
  • Feed rates
  • Clearance height or safe position
  • Machine-specific positions, e.g. with M91
  • Paths of program calls

Some NC programs depend on the machine kinematics. Adapt these NC programs to your machine kinematics before the first test run.

In addition, test the NC programs using the simulation before the actual program run.

 
Tip

With a program test you determine whether the NC program can be used with the available software options, the active machine kinematics and the current machine configuration.

Example

11 TCH PROBE 1412 INCLINED EDGE PROBING ~

Q1100=+20

;1ST POINT REF AXIS ~

Q1101=+0

;1ST POINT MINOR AXIS ~

Q1102=-5

;1ST POINT TOOL AXIS ~

QS400="+0.1-0.1"

;TOLERANCE ~

Q1130=+30

;NOMINAL ANGLE, 1ST LINE ~

Q1131=+1

;PROBE DIRECTION, 1ST LINE ~

Q1132=+10

;FIRST DISTANCE, 1ST LINE ~

Q1133=+20

;SECOND DISTANCE, 1ST LINE ~

Q1139=+3

;OBJECT PLANE ~

Q320=+0

;SET-UP CLEARANCE ~

Q260=+100

;CLEARANCE HEIGHT ~

Q1125=+2

;CLEAR. HEIGHT MODE ~

Q309=+0

;ERROR REACTION ~

Q1126=+0

;ALIGN ROTARY AXIS ~

Q1120=+0

;TRANSER POSITION ~

Q1121=+0

;CONFIRM ROTATION