HEIDENHAIN MANUALPLUS 4110 - Feed Rate and Spindle Speed Control; Feed Rate Calculation Methods; Spindle Speed Control Options; Maximum Speed Limitations

HEIDENHAIN MANUALplus 4110 Basic Knowledge 1.5
Feed rate and spindle speed
Feed rate
You select from the following methods:
 Feed rate per revolution in mm/rev
The feed rate depends on the spindle speed. The tool is moved at the programmed value for
each spindle revolution.
 Feed per minute in mm/min.
The feed rate is independent of the spindle speed. The tool constantly moves at the
programmed value.
Spindle speed
You select from the following methods:
 Constant spindle speed
You program the spindle speed directly. The spindle speed is independent of the diameter the
tool is working on.
 Constant cutting speed
You program the spindle speed indirectly. The MANUALplus 4110 changes the spindle speed
depending on the diameter momentarily being worked on by the tool. This results in a constant
cutting speed.
Example:
 Constant spindle speed:
Sections 1 to 3: identical spindle
speeds
 Constant cutting speed:
 Section 1: High spindle speed
 Section 2: Constantly decreasing
spindle speed
 Section 3: Low spindle speed
Maximum speed (speed limitation):
 If the constant spindle speed that you program is greater than the specified maximum
spindle speed, the maximum speed is valid.
 For constant cutting speed the speed is limited by the defined maximum spindle
speed.