Cycle 409 RIDGE CENTER PRESET (#17 / #1-05-1)

ISO programming

G409

Application

Touch probe cycle 409 finds the center of a ridge and defines this position as the preset. If desired, the control can also write the center point coordinates to a datum table or the preset table.

 
Tip

Instead of Cycle 409 RIDGE CENTER PRESET, HEIDENHAIN recommends using the more powerful Cycle 1404 PROBE SLOT/RIDGE.

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. Next, the touch probe moves to the entered measuring height and probes the first touch point at the probing feed rate (F column).
  4. Then the touch probe moves at clearance height to the next touch point 2 and probes it.
  5. The control returns the touch probe to the clearance height.
  6. Depending on the cycle parameters Q303 and Q305, the control processes the determined preset, (see Fundamentals of touch probe cycles 408 to 419 for preset setting)
  7. Then the control saves the actual values in the Q parameters listed below.
  8. If desired, the control subsequently measures the preset in the touch probe axis in a separate probing operation.

Q parameter
number

Meaning

Q166

Actual value of measured ridge width

Q157

Actual value of the centerline

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.
 
Notice
Danger of collision!
To prevent a collision between touch probe and workpiece, enter a high estimate for the ridge width.
  1. Before the cycle definition, you must have programmed a tool call to define the touch probe axis.
  • This cycle can be executed only in the FUNCTION MODE MILL machining mode.
  • The control will reset an active basic rotation at the beginning of the cycle.

Cycle parameters

Help graphic

Parameter

Q321 Center in 1st axis?

Center of the ridge in the main axis of the working plane. This value has an absolute effect.

Input: –99999.9999...+99999.9999

Q322 Center in 2nd axis?

Center of the ridge in the secondary axis of the working plane. This value has an absolute effect.

Input: –99999.9999...+99999.9999

Q311 Ridge width?

Width of the ridge, regardless of its position in the working plane. This value has an incremental effect.

Input: 0...99999.9999

Q272 Measuring axis (1=1st / 2=2nd)?

Axis in the working plane in which the measurement will be performed:

1: Main axis = measuring axis

2: Secondary axis = measuring axis

Input: 1, 2

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

Q305 Number in table?

Enter the row number from the preset table / datum table in which the control saves the center 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, then the control describes the datum table. The datum is not automatically activated.

Saving the calculated preset

Input: 0...99999

Q405 New preset?

Coordinate in the measuring axis at which the control will set the calculated ridge center. Default setting = 0. This value has an absolute effect.

Input: –99999.9999...+99999.9999

Q303 Meas. value transfer (0,1)?

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

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

1: Write the calculated preset to the preset table.

Input: 0, 1

Q381 Probe in TS axis? (0/1)

Define whether the control will also set the preset in the touch probe axis:

0: Do not set the preset in the touch probe axis

1: Set the preset in the touch probe axis

Input: 0, 1

Q382 Probe TS axis: Coord. 1st axis?

Coordinate of the touch point in the main axis of the working plane; the preset will be set at this point in the touch probe axis. Only effective if Q381 = 1. This value has an absolute effect.

Input: –99999.9999...+99999.9999

Q383 Probe TS axis: Coord. 2nd axis?

Coordinate of the touch point in the secondary axis of the working plane; the preset will be set at this point in the touch probe axis. Only effective if Q381 = 1. This value has an absolute effect.

Input: –99999.9999...+99999.9999

Q384 Probe TS axis: Coord. 3rd axis?

Coordinate of the touch point in the touch probe axis; the preset will be set at this point in the touch probe axis. Only effective if Q381 = 1. This value has an absolute effect.

Input: –99999.9999...+99999.9999

Q333 New preset in TS axis?

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

Input: –99999.9999...+99999.9999

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 409 RIDGE CENTER PRESET ~

Q321=+50

;CENTER IN 1ST AXIS ~

Q322=+50

;CENTER IN 2ND AXIS ~

Q311=+25

;RIDGE WIDTH ~

Q272=+1

;MEASURING AXIS ~

Q261=-5

;MEASURING HEIGHT ~

Q320=+0

;SET-UP CLEARANCE ~

Q260=+20

;CLEARANCE HEIGHT ~

Q305=+10

;NUMBER IN TABLE ~

Q405=+0

;PRESET ~

Q303=+1

;MEAS. VALUE TRANSFER ~

Q381=+1

;PROBE IN TS AXIS ~

Q382=+85

;1ST CO. FOR TS AXIS ~

Q383=+50

;2ND CO. FOR TS AXIS ~

Q384=+0

;3RD CO. FOR TS AXIS ~

Q333=+1

;PRESET