Cycle 424 MEAS. RECTAN. OUTS. (#17 / #1-05-1)
ISO programming
G424
Application
Touch probe cycle 424 finds the center, length, and width of a rectangular stud. If you define the corresponding tolerance values in the cycle, the control makes a nominal-to-actual value comparison and saves the deviation values in Q parameters.
Instead of Cycle 424 MEAS. RECTAN. OUTS., HEIDENHAIN recommends using the more powerful Cycle 1403 RECTANGLE PROBING.
Related topics
- Cycle 1403 RECTANGLE PROBING
Cycle run
- The control positions the touch probe to the pre-position of the first touch point 1, using positioning logic.
- Next, the touch probe moves to the entered measuring height and probes the first touch point at the probing feed rate (F column).
- Then the touch probe moves either paraxially at measuring height or at clearance height to the next touch point 2 and probes again.
- The control positions the touch probe to touch point 3 and then to touch point 4 to probe two more times.
- Finally, the control returns the touch probe to the clearance height and saves the actual values and deviations in the following Q parameters:
Q parameter | Meaning |
---|---|
Q151 | Actual value of center in reference axis |
Q152 | Actual value of center in minor axis |
Q154 | Actual value of side length in the reference axis |
Q155 | Actual value of side length in the minor axis |
Q161 | Deviation at center of reference axis |
Q162 | Deviation at center of minor axis |
Q164 | Deviation of side length in the reference axis |
Q165 | Deviation of side length in minor axis |
Notes
- This cycle can be executed only in the FUNCTION MODE MILL machining mode.
- Tool monitoring is dependent on the deviation of the first side length.
- 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 |
---|---|
Q273 Center in 1st axis (nom. value)? Center of the stud in the main axis of the working plane. This value has an absolute effect. Input: –99999.9999...+99999.9999 | |
Q274 Center in 2nd axis (nom. value)? Center of the stud in the secondary axis of the working plane. This value has an absolute effect. Input: –99999.9999...+99999.9999 | |
Q282 1st side length (nominal value)? Length of stud parallel to the main axis of the working plane Input: 0...99999.9999 | |
Q283 2nd side length (nominal value)? Length of stud parallel to the secondary axis of the working plane Input: 0...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 | |
Q301 Move to clearance height (0/1)? Define how the touch probe will move between the measuring points: 0: Move to measuring height between measuring points 1: Move to clearance height between measuring points Input: 0, 1 | |
Q284 Max. size limit 1st side length? Maximum permissible length for the stud Input: 0...99999.9999 | |
Q285 Min. size limit 1st side length? Minimum permissible length for the stud Input: 0...99999.9999 | |
Q286 Max. size limit 2nd side length? Maximum permissible width for the stud Input: 0...99999.9999 | |
Q287 Min. size limit 2nd side length? Minimum permissible width for the stud Input: 0...99999.9999 | |
Q279 Tolerance for center 1st axis? Permissible position deviation in the main axis of the working plane. Input: 0...99999.9999 | |
Q280 Tolerance for center 2nd axis? Permissible position deviation in the secondary axis of the working plane. Input: 0...99999.9999 | |
Q281 Measuring log (0/1/2)? Define whether the control will create a measuring log: 0: Do not create a measuring log 1: Create a measuring log: The control will save the log file named TCHPR424.TXT in the folder that also contains the .h file 2: Interrupt program run and display the measuring log on the control screen. Resume the NC program run with NC Start. Input: 0, 1, 2 | |
Q309 PGM stop if tolerance exceeded? Define whether in the event of a violation of tolerance limits the control will interrupt program run and output an error message: 0: Do not interrupt program run; no error message 1: Interrupt program run and output an error message Input: 0, 1 | |
Q330 Tool for monitoring? Define whether the control should perform tool monitoring: 0: Monitoring not active > 0: Number or name of the tool used for machining. Via selection in the action bar, you have the option of applying a tool directly from the tool table. Input: 0...99999.9 or max. 255 characters |
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.
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.
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