Siemens SINUMERIK 802D sl - Page 179

Cycles
9.10 Oscillating plunge cutting - CYCLE426
Surface grinding
Programming and Operating Manual, 11/2012, 6FC5398-5CP10-3BA0
179
Programming example - 1
Machining sequence:
● Plunge cut in Y direction at a grinding wheel peripheral speed of 20 m/s with two infeed
blocks.
● In part program block N30: allowance of 0.1 mm and infeed of 0.005 mm per stroke, no
retraction at the end and, therefore, grinding immediately continues in part program block
N40 with an allowance of 0.02 mm and infeed of 0.002 mm per stroke.
● Both operations involve 2 sparking-out strokes. These are performed with the same
geometry positions and feedrates.
● The fact that the start point of the second machining operation is precisely matched to an
end point of the first machining operation means that infeed can take place straight away.
In order for this to happen, grinding with an acoustic emission sensor must be
deactivated.
N10 T1D1
N20 CYCLE446( 20)
N30 CYCLE426( 0, -350, 100, 10.500000, -95, 0, 0, 0, 0.100000, 0, 0, 0.005000, 0.005000, 2, 0, 1000,
30000)
N40 CYCLE426( 0, -350, 100, 10.480000, -95, 0, 0, 0, 0.020000, 0, 0, 0.005000, 0.002000, 2, 1, 1000,
30000)
M30
Programming example - 2
Machining sequence:
● Plunge cut in Z direction at a grinding wheel peripheral speed of 20 m/s with two infeed
blocks.
● In part program block N30: allowance of 0.01 mm, acoustic emission sensor, and
standard infeed of 0.01 mm and infeed of 0.005 mm per stroke with acoustic emission
sensor at end point, plus infeed of 0.002 mm with grinding at end point, no retraction at
the end and, therefore, grinding immediately continues in part program block N40 with an
allowance of 0.02 mm and infeed of 0.002 mm per stroke.
● Both operations involve 2 sparking-out strokes. These are performed with the same
geometry positions and feedrates.
● The fact that the start point of the second machining operation is precisely matched to an
end point of the first machining operation means that infeed can take place straight away.
In order for this to happen, grinding with an acoustic emission sensor must be
deactivated.
N10 T2D1
N20 CYCLE446( 20)
N30 CYCLE426( 0, 100, -350, 10.5, -95, 1, 0, 0, 0.01, 0.01, 0.005, 0.002, 2, 0, 1000, 30000)
N40 CYCLE426( 0, -350, 100, 10.5, -95.02, 1, 0, 0, 0.01, 0.01, 0, 0.002, 2, 1, 1000, 30000)
M30