Siemens SINUMERIK 840DE Operation & Programming Manual page 108

5
Turning with Cycles
5.3 Stock removal/grooving cycles in STOCK REMOVAL mode
α α α α 0
α α α α 1 α α α α 2
,
R , FS
n n
D
U
5-108
If the groove is wider than the active tool, then the width is cut in
several steps.
Angle of slope
The oblique angle in relation to the reference axis on which the groove
is to be machined is programmed with parameter α α α α 0 . The angle can
be set to values of between –180° and +180°.
• Longitudinal groove: α
• Face groove:
• α is positive when rotational direction of X axis Þ Z axis
0
Edge angle
Flank angles are separately entered so that asymmetrical grooves can
be described. The angles can be set to values of between 0 and < 90°.
The groove form is modified through the input of radii/chamfers on the
edge or base (n = 1 ... 4).
Infeed depth 1st cut
D =0 : 1st cut is executed straight to the final depth T1 .
D >0 : The 1st and 2nd cut are executed at the infeed depth
D on alternate sides, to ensure a better chip clearance
and prevent tool breakage.
All other cuts are executed straight to the final depth T1 .
The lateral infeed for the alternate-sided cutting is automatically
defined in the cycle.
Alternate-sided cutting is not possible when the tool can only reach the
groove base at one position.
Finishing allowance
You can specify a finishing dimension for the groove base and flanks.
The workpiece material is rough-cut down to this finishing allowance
during roughing. Finally, a cut is made along the final contour with the
same tool.
= 0° Þ parallel to Z axis
0
α = 0° Þ parallel to X axis
0
© Siemens AG, 2002. All rights reserved
SINUMERIK 840D/810D Operator's Guide ManualTurn (BAM) – 08.02 Edition
5
08.02