Preset From Outside Of Rectangle (Cycle 411, Din/Iso: G411); Cycle Run - HEIDENHAIN TNC 640 User Manual

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Touch Probe Cycles: Automatic Presetting | PRESET FROM OUTSIDE OF RECTANGLE (Cycle 411,

15.5 PRESET FROM OUTSIDE OF

RECTANGLE (Cycle 411, DIN/ISO: G411)

Touch Probe Cycle 411 finds the center of a rectangular stud and

defines its center as preset. If desired, the TNC can also enter the

coordinates into a datum table or the preset table.

1 Following the positioning logic, the TNC positions the touch

probe at rapid traverse (value from FMAX column) (See

"Executing touch probe cycles", page 497) to touch point 1. The

TNC calculates the touch points from the data in the cycle and

the safety clearance from the SET_UP column of the touch

probe table.

2 Then the touch probe moves to the entered measuring height

and runs the first probing process at the probing feed rate

3 Then the touch probe moves either paraxially at measuring

height or at clearance height to the next starting point

probes the second touch point.

4 The TNC positions the probe to starting point

starting point

5 Finally the TNC returns the touch probe to the clearance height

and processes the determined preset depending on the cycle

parameters Q303 and Q305 (See "Characteristics common to all

touch probe cycles for presetting", page 528).

6 If desired, the TNC subsequently measures the preset in the

touch probe axis in a separate probing and saves the actual

values in the following Q parameters.

Parameter number

to probe the third and fourth touch points.

Actual value of center in reference axis

Actual value of center in minor axis

Actual value of length in the reference

Actual value of length in the minor axis

HEIDENHAIN | User's manual for cycle programming | 10/2017

DIN/ISO: G411)