Programming principles
1.5 Special turning functions
Turning Part 2: Programming (Siemens instructions)
70 Programming and Operating Manual, 05/2012, 6FC5398-5DP10-0BA0
1.5.3 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 counterclockwise.
&RQWRXU
=
;
;"
RU
"=
1
;=
$1*
1
3URJUDPPLQJ
(QGSRLQWLQ1QRWIXOO\
NQRZQ
1*;=
1;$1*
RU
1*;=
1=$1*
7KHYDOXHVDUHRQO\V\PEROLF
Figure 1-34 Angle value for determination of a straight line
To Next Page
Loading...
Need help?
General
