Heidenhain TNC 320 (340 55x-03) Touch Probe Cycles User Manual download pdf (Page 99)

HEIDENHAIN TNC 320 99

3.2 Presetting automatically

DATUM IN ONE AXIS (touch probe cycle 419,

DIN/ISO: G419)

Touch probe cycle 419 measures any coordinate in any axis and

defines it as datum. If desired, the TNC can also enter the measured

coordinate in a datum table or preset table.

1 The TNC positions the touch probe to the starting points at rapid

traverse (value from FMAX column) following the positioning logic

(see “Running touch probe cycles” on page 21) to the

programmed starting point 1. The TNC offsets the touch probe by

the safety clearance in the direction opposite the programmed

probing direction.

2 Then the touch probe moves to the programmed measuring height

and measures the actual position with a simple probing

movement.

3 Finally the TNC returns the touch probe to the clearance height and

processes the determined datum depending on the cycle

parameters Q303 and Q305. (see “Saving the calculated datum”

on page 64)

8 1st measuring point in 1st axis Q263 (absolute):

coordinate of the first touch point in the reference

axis of the working plane.

8 1st measuring point in 2nd axis Q264 (absolute):

coordinate of the first touch point in the minor axis of

the working plane.

8 Measuring height in the touch probe axis Q261

(absolute): Coordinate of the ball tip center (= touch

point) in the touch probe axis in which the

measurement is to be made.

8 Setup clearance Q320 (incremental): Additional

distance between measuring point and ball tip. Q320

is added to column SET_UP.

8 Clearance height Q260 (absolute): Coordinate in the

touch probe axis at which no collision between tool

and workpiece (fixtures) can occur.

Q264

Q263



Q267

Q272=2

Q272=1

MP6140 + Q320

Q260

Q261



Q272=1

Q272=3

Q267

Before programming, note the following

Before a cycle definition you must have programmed a

tool call to define the touch probe axis.

1 2 ... 94 95 96 97 98 99 100 101 102 103 104 ... 164 165

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Heidenhain TNC 320 (340 55x-03) Touch Probe Cycles User Manual Page 99

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