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Siemens SINUMERIK User Manual

Siemens SINUMERIK
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Programming and Operating Manual (Turning)
112 01/2017
Rounding RND or RNDM
A circle contour element can be inserted with tangential connection between the
linear and circle contours
in any
combination.
See the following illustration for examples for inserting roundings:
Programming examples for rounding
N10 G0 X100 Z100 G94 F100
N20 G1 X80 RND=8
; Insert 1 rounding with radius 8 mm, feedrate F
N30 X60 Z70
N40 X50 Z50
N50 G1 X40 FRCM= 200 RNDM=7.3
; Modal rounding, radius 7.3 mm with special feedrate FRCM
(modal)
N60 G1 X20 Z10
; continue inserting this rounding - to N70
N70 G1 X0 Z-45 RNDM=0
; Modal rounding OFF
N80 M30
11.10.3
Contour definition programming
Functionality
If direct end point values for the contour are not visible in a machining drawing, angle values can also be used for straight
line determination. In a contour corner, you can insert the elements chamfer or rounding. The corresponding instruction
CHR= ... or RND=... is written in the block that leads to the corner.
Contour definition programming can be used in blocks with
G0 or G1
.
Theoretically, any number of straight-line blocks can be combined and a rounding or chamfer inserted in between. Every
straight line must be clearly identified by point values and/or angle values.
Programming
ANG=...
; Specification of angle to define a straight line
RND=...
; Insert rounding, value: Radius of chamfer
CHR=...
; Insert chamfer, value: Side length of the chamfer
Information
If radius and chamfer are programmed in one block, only the radius is inserted regardless of the programming sequence.
Angle ANG=
An angle can be entered to uniquely define the straight line path if only one end point coordinate of the plane is known for a
straight line or for contours across multiple blocks the cumulative end point. The angle is always referred to the Z axis
(normal case: G18 active). Positive angles are aligned counter-clockwise.

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Siemens SINUMERIK Specifications

General IconGeneral
InterfaceEthernet, PROFIBUS, PROFINET, USB
Programming LanguagesDIN/ISO
DisplayTFT color display
CompatibilitySiemens drives and motors
SoftwareSINUMERIK Operate
Control Unit TypeCNC (Computer Numerical Control)
Safety FunctionsIntegrated safety functions up to SIL 3/PLe

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