Siemens SINUMERIK 840D Programming Manual page 126

Milling Cycles
3
3.5 Slots on a circle - SLOT1
During the cycle, the workpiece coordinate system is
shifted and rotated. The values in the workpiece
coordinate system displayed on the actual value
display are such that the longitudinal axis of the slot
that has just been machined corresponds to the first
axis of the current machining plane.
When the cycle is completed, the workpiece
coordinate system is again in the same position as it
was before the cycle was called.
Programming example
Slots
This program produces the same arrangement of 4
slots on a circle as the program for elongated hole
machining (see Section 3.4).
The slots have the following dimensions:
Length 30 mm, width 15 mm and depth 23 mm. The
safety clearance is 1 mm, the final machining
allowance is 0.5 mm, the milling direction is G2, the
maximum infeed in the depth is 10 mm.
The slots must be machined completely with an
oscillating insertion motion.
N10 G19 G90 D10 T10 S600 M3
N20 G0 Y20 Z50 X5
N30 SLOT1 (5, 0, 1, -23, , 4, 30, 15, ->
->40, 45, 20, 45, 90, 100, 320, 10, ->
->2, 0.5, 30, 10, 400, 1200, 0.6, 5)
N40 M30
-> Must be programmed in a single block
3-126
Z
90°
40
Specification of technology values
Approach starting position
Cycle call, parameters VARI, MIDF,
FFP2 and SSF omitted
End of program
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide, Cycles (PGZ) - 04.00 Edition
03.96
04.00
A A - B
45°
20
Y
23
B
 Siemens AG 2000 All rights reserved.
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Z
X