Preset Circle Center (Cycle 416, Din/Iso: G416); Cycle Run - HEIDENHAIN TNC 640 User Manual

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Touch Probe Cycles: Automatic Presetting | PRESET CIRCLE CENTER (Cycle 416, DIN/ISO: G416)

15.10 PRESET CIRCLE CENTER (Cycle 416,

DIN/ISO: G416)

Touch Probe Cycle 416 finds the center of a bolt hole circle 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 the center of the

first hole 1.

2 Then the probe moves to the entered measuring height and

probes four points to find the first hole center.

3 The touch probe returns to the clearance height and then to the

position entered as center of the second hole 2.

4 The TNC moves the touch probe to the entered measuring

height and probes four points to find the second hole center.

5 The touch probe returns to the clearance height and then to the

position entered as center of the third hole 3.

6 The TNC moves the touch probe to the entered measuring

height and probes four points to find the third hole center.

7 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) and saves the

actual values in the Q parameters listed below.

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

touch probe axis in a separate probing.

Parameter number

Actual value of center in reference axis

Actual value of center in minor axis

Actual value of bolt hole circle diameter

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