Engraving (Cycle 225, Din/Iso: G225); Cycle Run; Please Note While Programming - HEIDENHAIN TNC 640 User Manual

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11.8 ENGRAVING (Cycle 225, DIN/ISO: G225)

This cycle is used to engrave texts on a flat surface of the

workpiece. The texts can be arranged in a straight line or along an

1 The TNC positions the tool in the working plane to the starting

point of the first character.

2 The tool plunges perpendicularly to the engraving floor and mills

the character. The TNC retracts the tool to the set-up clearance

between the characters when required. After machining

the character, the tool is at the set-up clearance above the

workpiece surface.

3 This process is repeated for all characters to be engraved.

4 Finally, the TNC retracts the tool to the 2nd set-up clearance.

The algebraic sign for the cycle parameter DEPTH

determines the working direction. If you program

DEPTH=0, the cycle will not be executed.

The text to be engraved can also be transferred with a

string variable (QS).

Parameter Q347 influences the rotational position of the

If Q374=0° to 180°, the characters are engraved from

left to right.

If Q374 is greater than 180°, the direction of engraving is

When engraving on a circular arc, the starting point is

at bottom left, above the first character to be engraved.

(With older software versions there was sometimes a

pre-positioning to the center of the circle.)

Cycles: Special Functions | ENGRAVING (Cycle 225, DIN/ISO: G225)

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