Siemens SINUMERIK 808D User Manual

Programming and Operating Manual (Milling)
110 6FC5398-4DP10-0BA6, 09/2017
11.8.3
Spindle positioning: SPOS
Functionality
Requirement:
The spindle must be technically designed for position control.
With the function SPOS= you can position the spindle in a specific
angular position
. The spindle is held in the position
through position control.
The
speed
of the positioning procedure is defined in machine data.
With SPOS= value from the M3/M4 movement, the respective
direction 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=...
; Absolute position: 0 ... <360 degrees
SPOS=ACP(...)
; Absolute dimensions, approach position in positive direction
SPOS=ACN(...)
; Absolute dimensions, approach position in negative direction
SPOS=IC(...)
; Incremental dimensions, leading sign determines the traversal direction
SPOS=DC(...)
; Absolute dimensions, approach position directly (on the shortest path)
Programming example
N10 SPOS=14.3
; Spindle position 14.3 degrees
N80 G0 X89 Z300 SPOS=25.6
; Positioning spindle with axis moveme nts
; This block is ended whe n all movements have finished
N81 X200 Z300
; The N81 block only begi ns once the spi ndl e position from N80
is reached
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 or 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=...
; Angle specification for defining a straight line
RND=...
; Insert rounding, value: Radius of chamfer
CHR=...
; Insert chamfer, value: Side length of the chamfer
Information
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.

Siemens SINUMERIK 808D Specifications

General

Brand	Siemens
Model	SINUMERIK 808D
Category	Control Unit
Language	English