Thread Cutting (Cycle 18, Din/Iso: G18); Cycle Run; Please Note While Programming - HEIDENHAIN TNC 640 User Manual

Hide thumbs Also See for TNC 640:

Table of Contents

Cycles: Special Functions | THREAD CUTTING (Cycle 18, DIN/ISO: G18)

11.12 THREAD CUTTING (Cycle 18, DIN/ISO:

Cycle 18 THREAD CUTTING moves the tool with servo-controlled

spindle from the momentary position with active speed to the

entered depth. As soon as it reaches the end of thread, spindle

rotation is stopped. Approach and departure movements must be

programmed separately.

It is possible to use the feed rate potentiometer during

tapping. The machine tool builder sets the configuration

(with parameter CfgThreadSpindle>sourceOverride)

for this purpose. The TNC then modifies the speed

accordingly.

The spindle speed potentiometer is inactive.

Program a spindle stop before starting the cycle!

(e.g. with M5). The TNC switches the spindle on

automatically at cycle start and off at the end of the

The algebraic sign for the cycle parameter "thread depth"

determines the working direction.

Danger of collision!

A collision may occur if you do not program pre-positioning

before calling Cycle 18. Cycle 18 does not perform approach and

departure motion.

Before calling the cycle, pre-position the tool

The tool moves from the current position to the entered

depth after the cycle is called

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