Heidenhain TNC 320 (340 55x-03) Touch Probe Cycles User Manual download pdf (Page 115)

HEIDENHAIN TNC 320 115

3.3 Automatic Workpiece Measurement

8 Center in 1st axis Q273 (absolute value): Center of

the hole in the reference axis of the working plane.

8 Center in 2nd axis Q274 (absolute value): Center of

the hole in the minor axis of the working plane.

8 Nominal diameter Q262: Enter the diameter of the

hole.

8 Starting angle Q325 (absolute): Angle between the

reference axis of the working plane and the first touch

point.

8 Stepping angle Q247 (incremental): Angle between

two measuring points. The algebraic sign of the

stepping angle determines the direction of rotation

(negative = clockwise). If you wish to probe a circular

arc instead of a complete circle, then program the

stepping angle to be less than 90°.

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.

8 Traversing to clearance height Q301: Definition of

how the touch probe is to move between the

measuring points:

0: Move at measuring height between measuring

points

1: Move at clearance height between measuring

points

8 Maximum dimension of size for hole Q275:

Maximum permissible dimension for the hole (circular

pocket).

8 Minimum dimension for hole Q276: Minimum

permissible dimension for the hole (circular pocket).

8 Tolerance value for center 1st axis Q279:

Permissible position deviation in the reference axis of

the working plane.

8 Tolerance value for center 2nd axis Q280:

Permissible position deviation in the minor axis of the

working plane.

Q274

±Q280

Q273

±Q279

Q276

Q325

Q247

Q262

Q275

MP6140

Q320

Q261

Q260

The smaller the angle, the less accurately the TNC can

calculate the hole dimensions. Minimum input value: 5°.

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Heidenhain TNC 320 (340 55x-03) Touch Probe Cycles User Manual Page 115

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