Heidenhain MANUALplus 4110 User Manual download pdf (Page 337)

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HEIDENHAIN MANUALplus 4110 337

6.15 Thread Cycles

Single thread G32

G32 cuts a simple thread in any desired direction and position

(longitudinal, tapered or transverse thread; internal or external thread).

The thread starts at the current tool position and ends at the "end point

X, Z."

Parameters

 X end point of thread (diameter value)

 Z end point of thread

 F thread pitch

 U thread depth

 U>0: Internal thread

 U<=0: External thread (lateral surface or front face)

 U= +999 or –999: Thread depth is calculated

 I maximum infeed

 B remainder cuts (default: 0)

 B=0: The last cut is divided into four partial cuts: 1/2, 1/4, 1/8 and

1/8.

 B=1: Without distribution of remaining cut

 Q number of air cuts after the last cut (default: 0)

 K run-out length at end point of thread (default: 0)

 W taper angle (default: 0): Position of the tapered thread with

reference to longitudinal or transverse axis. For cutting a descending

tapered thread, W must be programmed with a negative algebraic

sign.

Range: –45° < W < 45°

 C starting angle: Position of the spindle at the thread start

(default: 0°)

 H type of tool offset (default: 0)

 H=0: Without offset

 H=1: Offset from the left toward the thread base

 H=2: Offset from the right toward the thread base

 H=3: Tool is offset alternately from the right and left (zigzag)

Internal or external threads: See algebraic sign of "U."

Infeeds: If the division U/I provides a remainder, the first feed is

reduced. The last cut is divided into four partial cuts: 1/2, 1/4, 1/8 and

1/8

Example: G32

%32.nc

[G32]

N1 T45 G97 S800 M3

N2 G0 X16 Z4

N3 G32 X16 Z-29 F1.5 U-0.9 I0.2

END

 Transverse threads are machined with recessing tools.

 "Cycle STOP" becomes effective at the end of a thread

cut.

 The feed rate and spindle speed overrides are not

effective during cycle execution.

 Feedforward control is switched off.

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