Siemens SINUMERIK 840D

Programming technological functions (cycles)
8.5 Contour turning - only for G code programs
Milling
Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
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5. Remove residual material (roughing)
For G code programming, when removing stock, it must first be decided whether to rough
(machine) with residual material detection or not. A suitable tool will allow you to remove
this without having to machine the contour again.
6. Stock removal along the contour (finishing)
If you programmed a finishing allowance for roughing, the contour is machined again.
8.5.2 Representation of the contour
G code program
In the editor, the contour is represented in a program section using individual program
blocks. If you open an individual block, then the contour is opened.
Symbolic representation
The individual contour elements are represented by symbols adjacent to the graphics
window. They appear in the order in which they were entered.
Contour element Symbol Meaning
Starting point Starting point of the contour
Straight line up Straight line in 90° grid
Straight line down Straight line in 90° grid
Straight line left Straight line in 90° grid
Straight line right Straight line in 90° grid
Straight line in any direction Straight line with any gradient
Arc right Circle
Arc left Circle
Pole Straight diagonal or circle in
polar coordinates
Finish contour END End of contour definition
The different colors of the symbols indicate their status: