HEIDENHAIN TNC 640 User Manual page 473

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Cycles: Turning | CONTOUR-PARALLEL THREAD

(Cycle 830, DIN/ISO: G830)

Danger of collision!

The retraction motion is directly to the starting position.

Always position the tool so that the TNC can approach the

starting point at the end of the cycle without collisions.

Danger of collision!

Programming a Q467 angle of infeed wider than the side angle

of the thread may destroy the thread flank. If the angle of infeed

is modified, the position of the thread is shifted in an axial

direction. With a changed angle of infeed the tool can no longer

interface the thread grooves.

Program the Q467 angle of infeed to be less than the side

angle of the thread

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