Siemens Sinumerik 840D Operating Turning page 10

Section 3
Notes
B500
B500
Turning
Table Selection of the thread table
without
ISO metric
Whitworth BSW
Whitworth BSP
UNC
T Tool name
T1 Back-cut depth Ø (abs) or back-cut depth
(Back-cut) referred to X0 (inc)
U1 Contour allowance
U Finishing allowance
UX Finishing allowance in X
UZ Finishing allowance in Z
V Constant cutting speed
VR Retraction gap (inc)
VX Planar pass Ø (abs) or planar pass (inc)
(Relief cut)
X0 Reference point Ø (abs)
(Back-cut)
X1 Allowance in X Ø (abs) or allowance in X (inc)
(Relief cut)
X1 End point of the thread Ø (abs) or thread length
(Metal re- (inc)
moval
Thread)
X1 End point X Ø (abs) or end point referred to X0
(Taper (inc)
thread)
X1α Thread taper
(Taper
thread)
X1 Depth for speed reduction Ø (abs) or depth for
(Parting cut) speed reduction referred to X0 (inc)
X2
Final depth Ø (abs) or final depth referred to X1
(Parting cut) (inc)
Page 8
Unit
mm
mm
mm
mm
mm
m/min
mm
mm
mm
mm
mm
mm
Degrees
mm
mm
840D/828D SINUMERIK Operate