Siemens SINUMERIK User Manual

Programming and Operating Manual (Turning)
01/2017
41
7.2.3.7
Fixed point approach (G74/G75)
Description
Programming example
G74:
By using G74, reference point can be approached automati-
cally.
N10 G18 G90 G500 G71
N20 T1 D1
N30 S5000 M3 G95 F0.3
N40 G00 X50 Z5
N50 G01 Z-5
N60 Z5
N70 G74 X=0 ;reference point
G75:
By using G75, a fixed point on the machine defined by the
manufacturer can be approached automatically.
N10 G18 G90 G500 G71
N20 T1 D1
N30 S5000 M3 G95 F0.3
N40 G00 X50 Z5
N50 G01 Z-5
N60 Z5
N70
G74 Z=0
;reference point
N80 G75 X=0 ;fixed point
For more information, see Section "Fixed point approach (Page 97)".
7.2.3.8
Spindle control
Description
Programming example
M3:
Spindle accelerates to the programmed speed in clockwise
direction.
M4:
Spindle accelerates to the programmed speed in counter-
clockwise direction.
M5:
Spindle decelerates to stop.
M19:
Sets the spindle to a specific angular position.
N10 G18 G90 G500 G71
N20 T1 D1
N30 S5000
M3
G95 F0.3
N40 G00 X50 Z5
N50 G01 Z-5
N60
M5
N70 Z5
M4
N80
M5
N90
M19
N100 G00 X200 Z50
For more information, see Section "Spindle movements (Page 101)".
7.2.3.9
Setting dwell time in the program (G04)
Description
Programming example
G04:
G04 can be used to stop the tool movements during ma-
chining process.
G04 F5: program dwells for 5 seconds
This makes the workpiece surface much smoother.
N10 G18 G90 G500 G71
N20 T1 D1
N30 S5000 M3 G95 F0.3
N40 G00 X50 Z5
N50 G01 Z-5
N60
G04 F5
N70 Z5 M4
N80 M5
N90 M19
N100 G00 X200 Z50
For more information, see Section "Dwell Time: G4 (Page 100)".

Siemens SINUMERIK Specifications

General

Brand	Siemens
Model	SINUMERIK
Category	Control Unit
Language	English