Cycle 419 PRESET IN ONE AXIS (#17 / #1-05-1)

ISO programming

G419

Application

Touch probe cycle 419 measures any coordinate in the a selectable axis and defines it as the preset. If desired, the control can also write the measured coordinates to a datum table or preset table.

 
Tip

Instead of Cycle 419 PRESET IN ONE AXIS, HEIDENHAIN recommends using the more powerful Cycle 1400 POSITION PROBING.

Cycle run

  1. The control positions the touch probe to the pre-position of the first touch point 1, using positioning logic.
  2. Positioning logic

  3. Then the touch probe moves to the programmed measuring height and measures the actual position with a simple probing movement.
  4. The control returns the touch probe to the clearance height.
  5. Depending on the cycle parameters Q303 and Q305, the control processes the calculated preset, (see Fundamentals of touch probe cycles 408 to 419 for preset setting)

Notes

 
Notice
Danger of collision!
During execution of touch probe cycles 400 to 499, all coordinate transformation cycles must be inactive. Otherwise, there is a danger of collision!
  1. Do not activate the following cycles before the use of touch probe cycles:
    • Cycle 7 DATUM SHIFT
    • Cycle 8 MIRRORING
    • Cycle 10 ROTATION
    • Cycle 11 SCALING FACTOR
    • Cycle 26 AXIS-SPECIFIC SCALING
  2. Reset any coordinate transformations beforehand.
  • This cycle can be executed only in the FUNCTION MODE MILL machining mode.
  • If you want to save the preset in several axes in the preset table, you can use Cycle 419 several times in a row. However, you also have to reactivate the preset number after every run of Cycle 419. If you work with preset 0 as active preset, this process is not required.
  • The control will reset an active basic rotation at the beginning of the cycle.

Note on programming

  • Before defining this cycle, you must have programmed a tool call to define the touch probe axis.

Cycle parameters

Help graphic

Parameter

Q263 1st measuring point in 1st axis?

Coordinate of the first touch point in the main axis of the working plane. This value has an absolute effect.

Input: –99999.9999...+99999.9999

Q264 1st measuring point in 2nd axis?

Coordinate of the first touch point in the secondary axis of the working plane. This value has an absolute effect.

Input: –99999.9999...+99999.9999

Q261 Measuring height in probe axis?

Coordinate of the ball tip center in the touch probe axis in which the measurement will be performed. This value has an absolute effect.

Input: –99999.9999...+99999.9999

Q320 Set-up clearance?

Additional distance between touch point and ball tip. Q320 is active 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. This value has an absolute effect.

Input: –99999.9999...+99999.9999 or PREDEF

Q272 Meas. axis (1/2/3, 1=ref. axis)?

Axis in which the measurement will be made:

1: Main axis = measuring axis

2: Secondary axis = measuring axis

3: Touch probe axis = measuring axis

Axis assignment

Active
touch probe axis: Q272 = 3

Corresponding main axis: Q272 = 1

Corresponding secondary axis: Q272 = 2

Z

X

Y

Y

Z

X

X

Y

Z

Input: 1, 2, 3

Q267 Trav. direction 1 (+1=+ / -1=-)?

Direction in which the touch probe will approach the workpiece:

–1: Negative traverse direction

+1: Positive traverse direction

Input: –1, +1

Q305 Number in table?

Indicate the number of the row of the preset table or datum table, in which the control saves the coordinates. Depending on Q303, the control writes the entry to the preset table or datum table.

If Q303 = 1, the control will write the data to the preset table.

If Q303 = 0, the control will write the data to the datum table. The datum is not automatically activated.

Saving the calculated preset

Input: 0...99999

Q333 New preset?

Coordinate at which the control will set the preset. Default setting = 0. This value has an absolute effect.

Input: –99999.9999...+99999.9999

Q303 Meas. value transfer (0,1)? (optional)

Define whether the calculated preset will be saved in the datum table or in the preset table:

-1: Do not use. Is entered by the control when old NC programs are loaded see Application

0: Write the calculated preset to the active datum table. The reference system is the active workpiece coordinate system.

1: Write the calculated preset to the preset table.

Input: -1, 0, +1

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 419 PRESET IN ONE AXIS ~

Q263=+25

;1ST POINT 1ST AXIS ~

Q264=+25

;1ST POINT 2ND AXIS ~

Q261=+25

;MEASURING HEIGHT ~

Q320=+0

;SET-UP CLEARANCE ~

Q260=+50

;CLEARANCE HEIGHT ~

Q272=+1

;MEASURING AXIS ~

Q267=+1

;TRAVERSE DIRECTION ~

Q305=+0

;NUMBER IN TABLE ~

Q333=+0

;PRESET ~

Q303=+1

;MEAS. VALUE TRANSFER