Spindle Positioning: Spos - Siemens SINUMERIK 808D User Manual

11.8.3

Spindle positioning: SPOS

Fu n ctionality
R e quirement: The spindle must be technically designed for position control.
With the function SPOS= you can position the spindle in a specific a n gular position. The spindle is held in the position
through position control.
The sp eed of the positioning procedure is defined in machine data.
value
With SPOS= from the M3/M4 movement, the respective d i rection of rotation is maintained until the end of the
positioning. When positioning from standstill, the position is approached via the shortest path. The direction results from the
respective start and end position.
Exception: First movement of the spindle, i.e. if the measuring system is not yet synchronized. In this case, the direction is
specified in machine data.
Other movement specifications for the spindle are possible with SPOS=ACP(...), SPOS=ACN(...), ... as for rotary axes.
The spindle movement takes place parallel to any other axis movements in the same block. This block is ended when both
movements are finished.
Programming
SPOS=...
SPOS=ACP(...)
SPOS=ACN(...)
SPOS=IC(...)
SPOS=DC(...)
Programming example
N10 SPOS=14.3
N80 G0 X89 Z300 SPOS=25.6
N81 X200 Z300
11.9 Contour programming support
11.9.1 Contour definition programming
Fu n ctionality
If the end points for the contour are not directly specified in the machining drawing, it is also possible to use an angle
specification ANG=... to determine the straight line. In a contour corner, you can insert the elements chamfer or rounding.
The respective instruction CHR= ... or RND=... is written in the block, which leads to the corner.
The blueprint programming can be used in blocks with G0 o r G1 (linear contours).
Theoretically, any number of straight line blocks can be connected and a rounding or a chamfer can be inserted between
them. Every straight line must be clearly identified by point values and/or angle values.
Programming
ANG=...
RND=...
CHR=...
In formation
The blueprint programming function is executed in the current plane G17 to G19. It is not possible to change the plane
during blueprint programming.
If radius and chamfer are programmed in one block, only the radius is inserted regardless of the programming sequence.
110
; Absolute position: 0 ... <360 degrees
; Absolute dimensions, approach position in positive direction
; Absolute dimensions, approach position in negative direction
; Incremental dimensions, leading sign determines the traversal direction
; Absolute dimensions, approach position directly (on the shortest path)
; Spindle position 14.3 degrees
; Positioning spindle with axis movements
; This block is ended when all movements have finished
; The N81 block only begins once the spindle position from N80
is reached
; Angle specification for defining a straight line
; Insert rounding, value: Radius of chamfer
; Insert chamfer, value: Side length of the chamfer
Programming and Operating Manual (Milling)
6FC5398-4DP10-0BA6, 09/2017