Siemens SINUMERIK 840D SL Operating Manual page 424

Programming technological functions (cycles)
8.5 Contour turning - only for G code programs
● Feedrate, transition element
If you have chosen a chamfer or a radius as the transition element, enter a reduced feedrate
in the "FRC" parameter. The slower machining rate means that the transition element is
machined more accurately.
Procedure for entering contour elements
424
1. The part program is opened. Position the cursor at the required input
position, this is generally at the physical end of the program after M02
or M30.
2. Contour input using contour support:
2.1 Press the "Contour turning", "Contour" and "New contour" softkeys.
2.2 In the opened input window, enter a name for the contour, e.g.
contour_1.
Press the "Accept" softkey.
2.3 The input screen to enter the contour opens, in which you initially enter
a starting point for the contour. This is marked in the lefthand navigation
bar using the "+" symbol.
Press the "Accept" softkey.
3. Enter the individual contour elements of the machining direction.
Select a contour element via softkey.
The "Straight (e.g. Z)" input window opens.
- OR
The "Straight (e.g. X)" input window opens.
- OR
The "Straight (e.g. ZX)" input window opens.
- OR
The "Circle" input window opens.
4. Enter all the data available from the workpiece drawing in the input
screen (e.g. length of straight line, target position, transition to next
element, angle of lead, etc.).
Operating Manual, 02/2012, 6FC5398-7CP40-3BA0
Milling