Siemens SINUMERIK 840D Operating Manual page 333

Additional functions
The following additional functions are available for programming a contour:
● Tangent to preceding element
● Dialog box selection
● Close contour
Procedure for entering contour elements
Milling
Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
You can program the transition to the preceding element as tangent.
If two different possible contours result from the parameters entered thus far, one of the
options must be selected.
From the actual position, you can close the contour with a straight line to the starting
point.
1. The part program or the machining schedule is opened. Position the
cursor at the desired entry position.
2. Contour input using contour support:
2.1 Press the "Contour milling", "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. X)" input window opens.
- OR
The "Straight (e.g. Y)" input window opens.
- OR
The "Straight (e.g. XY)" input window opens.
- OR
Programming technological functions (cycles)
8.3 Contour milling
333