Heidenhain TNC 320 (340 55x-03) Touch Probe Cycles User Manual download pdf (Page 76)

3.2 Presetting automatically

8 Measured-value transfer (0, 1) Q303: Specify

whether the determined datum is to be saved in the

datum table or in the preset table:

-1: Do not use. Is entered by the TNC when old

programs are read in (see “Saving the calculated

datum” on page 64).

0: Write determined datum in the active datum table.

The reference system is the active workpiece

coordinate system.

1: Write determined datum in the preset table. The

reference system is the machine coordinate system

(REF system).

8 Probe in TS axis Q381: Specify whether the TNC

should also set the datum in the touch probe axis:

0: Do not set datum in the touch probe axis

1: Set datum in the touch probe axis

8 Probe TS axis: Coord. 1. st axis Q382 (absolute):

Coordinate of the probe point in the reference axis of

the working plane at which point the datum is to be

set in the touch probe axis. Only effective if Q381 = 1.

8 Probe TS axis: Coord. 2. nd axis Q383 (absolute):

Coordinate of the probe point in the reference axis of

the working plane at which point the datum is to be

set in the touch probe axis. Only effective if Q381 = 1.

8 Probe TS axis: Coord. 3. rd axis Q384 (absolute):

Coordinate of the probe point in the reference axis of

the working plane at which point the datum is to be

set in the touch probe axis. Only effective if Q381 = 1.

8 New datum for touch probe axis Q333 (absolute):

Coordinate in the touch probe axis at which the TNC

should set the datum. Basic setting = 0

DATUM FROM INSIDE OF CIRCLE (touch probe

cycle 412, DIN/ISO: G412)

Touch probe cycle 412 finds the center of a circular pocket (or of a

hole) and defines its center as datum. If desired, the TNC can also

enter the coordinates into a datum table or the preset table.

1 The TNC positions the touch probe at rapid traverse (value from

FMAX column) following the positioning logic (see “Running touch

probe cycles” on page 21) to the starting point 1. The TNC

calculates the probe starting 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 (column F).

The TNC derives the probing direction automatically from the

programmed starting angle.

3 Then the touch probe moves in a circular arc either at measuring

height or at clearance height to the next starting point 2 and probes

the second touch point.

Example: NC blocks

5 TCH PROBE 411 DATUM OUTS. RECTAN.

Q321=+50 ;CENTER 1ST AXIS

Q322=+50 ;CENTER 2ND AXIS

Q323=60 ;FIRST SIDE LENGTH

Q324=20 ;SECOND SIDE LENGTH

Q261=-5 ;MEASURING HEIGHT

Q320=0 ;SET-UP CLEARANCE

Q260=+20 ;CLEARANCE HEIGHT

Q301=0 ;MOVE TO CLEARANCE

Q305=0 ;NO. IN TABLE

Q331=+0 ;DATUM

Q332=+0 ;DATUM

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 ;2RD CO. FOR TS AXIS

Q333=+0 ;DATUM

1 2 ... 71 72 73 74 75 76 77 78 79 80 81 ... 164 165

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