Cycle parameters – HEIDENHAIN iTNC 530 (340 49x-05) Cycle programming User Manual

Page 126

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Canned Cycles: Tapping / Thread Milling

4.9 HELICAL THREAD DRILLING/MI

LLING (Cy

c

le 265, DIN/ISO: G265)

Cycle parameters

U

Nominal diameter

Q335: Nominal thread diameter.

Input range: 0 to 99999.9999

U

Thread pitch

Q239: Pitch of the thread. The algebraic

sign differentiates between right-hand and left-hand
threads:
+ = right-hand thread
= left-hand thread
Input range -99.9999 to 99.9999

U

Thread depth

Q201 (incremental): Distance between

workpiece surface and root of thread. Input range: -
99999.9999 to 99999.9999

U

Feed rate for pre-positioning

Q253: Traversing

speed of the tool in mm/min when plunging into the
workpiece, or when retracting from the workpiece.
Input range 0 to 99999.999 alternatively FMAX, FAUTO,
PREDEF

.

U

Depth at front

Q358 (incremental): Distance

between tool tip and the top surface of the workpiece
for countersinking at the front of the tool. Input range:
-99999.9999 to 99999.9999

U

Countersinking offset at front

Q359 (incremental):

Distance by which the TNC moves the tool center
away from the hole center. Input range: 0 to
99999.9999

U

Countersink

Q360: Execution of the chamfer

0 = before thread machining
1 = after thread machining

U

Setup clearance

Q200 (incremental): Distance

between tool tip and workpiece surface. Input range
0 to 99999.9999, alternatively PREDEF

X

Y

Q207

Q335

X

Z

Q203

Q253

Q239

Q201

Q204

Q200

X

Z

Q359

Q358

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