Thread Milling - Cycle70 - Siemens Sinumerik 840D sl Programming Manual

16.1.24

Thread milling - CYCLE70

Programming
CYCLE70(REAL _RTP, REAL _RFP, REAL _SDIS, REAL _DP, REAL _DIATH, REAL
_H1, REAL _FAL, REAL _PIT, INT _NT, REAL _MID, REAL _FFR, INT _TYPTH,
REAL _PA, REAL _PO, REAL _NSP, INT _VARI, INT _PITA, STRING[15]
_PITM, STRING[20] _PTAB, STRING[20] _PTABA, INT _GMODE, INT _DMODE,
INT _AMODE)
Parameters
Param Param
No.
Mask intern
1
RP _RTP
2
Z0 _RFP
3
SC _SDIS
4
Z1 _DP
5 ∅
_DIATH
6
H1 _H1
7
U _FAL
8
P _PIT
9
NT _NT
10
DXY _MID
11
F _FFR
12
_TYPTH
13
X0 _PA
14
Y0 _PO
15
αS
_NSP
16
_VARI
Job planning
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
Explanation
Retraction plane (abs)
Reference point of tool axis (abs)
Safety clearance (to be added to reference point, enter without sign)
Thread length (abs/inc), see _AMODE
Take account of runout at base of hole (at least half pitch)
Nominal diameter of the thread
Thread depth
Finishing allowance
Pitch (select_PITA: mm, inch, MODULE, threads/inch)
Number of teeth on the tool tip
Tool length is always with respect to bottom tooth.
Maximum infeed per cut
_MID > _H1: all in one cut
Milling feed
Thread type
0 = Internal thread
1 = External thread
Circle center 1st axis (abs)
Circle center 2nd axis (abs)
Start angle (multi-start thread)
Machining type
UNITS:
1 = Roughing
2 = Finishing
TENS:
1 = from top to bottom
2 = from bottom to top
HUNDREDS:
0 = right-hand thread
1 = Left-hand thread
Programming cycles externally
16.1 Technology cycles
785