OPTIMUM
M A S C H I N E N - G E R M A N Y
808D
Page 363
Additional Information Part 1
Brief instruction 808D Milling
Operating and Programming — Milling
SEQUENCE
When a machine has a manual gearbox on the spindle, it is the responsibility of the
operator to change gear at the correct place in the part program.
If the machine tool manufacturer has fitted an automatic gearbox, the following M-codes
can be used to change gear in the part program:
Gear stages M40, M41, M42, M43, M44 and M45 are available.
M40
Automatic gear selection
M41
Gear stage 1
M42
Gear stage 2
M43
Gear stage 3
M44
Gear stage 4
M45
Gear stage 5
Example:
The machine tool manufacturer specifies a speed range for each gear stage:
S0...500
Gear stage 1
→
M41
S400..1200
Gear stage 2
→
M42
S1000..2000
Gear stage 3
→
M43
If the operator is manually selecting the gear stage in the part program, it is the operator’s
responsibility to select the correct gear stage according to the required speed.
Gear
change
