Programming A Circle With Known Radius - Siemens sinumerik 840D sl Operating Manual

Programming technology functions (cycles)
8.7 Further cycles and functions ShopTurn
8.7.13

Programming a circle with known radius

To program a circle or arc with a known radius, use the "Circle radius" function.
The tool traverses a circular arc with the programmed radius from its actual position to the
programmed target position at the machining feedrate. To do this, the system calculates the
position of the circle center point.
You can choose to traverse the arc in the clockwise or anticlockwise direction. Depending on
the direction of rotation, there are two options for approaching the target position from the
current position via an arc of the specified radius.
You can select the arc of your choice by entering a positive or a negative sign for the radius.
Figure 8-2
Procedure
Parameters
Direction of rotation
Y
Z
446
Opening angle
1. The ShopTurn program to be processed has been created and you
are in the editor.
2. Press the menu forward key and the "Straight Circle" softkey.
3. Press the "Circle radius" softkey.
Description
Direction of rotation in which the tool travels from the circle starting point to the
circle end point
Direction of rotation clockwise (right)
Direction of rotation counterclockwise (left)
Machining plane peripheral surface/peripheral surface C
Target position Y (abs) or target position X referred to the last programmed
position (inc)
Target position Z (abs) or target position Y referred to the last programmed
position (inc)
Note:
Incremental dimension: The sign is also evaluated
Operating Manual, 07/2010, 6FC5398-8CP40-0BA0
Unit
mm
mm
Turning