With turning you can machine both at constant spindle speed and constant cutting speed.
Use FUNCTION TURNDATA SPIN to define the speed.
With turning you can machine both at constant spindle speed and constant cutting speed.
Use FUNCTION TURNDATA SPIN to define the speed.
If you machine at constant cutting speed VCONST:ON, the control modifies the speed according to the distance of the tool tip to the center of the turning spindle. For positioning movements toward the center of rotation, the control increases the table speed; for movements away from the center of rotation, it reduces the table speed.
For processing with constant spindle speed VCONST:Off, speed is independent of the tool position.
With FUNCTION TURNDATA SPIN you can define a maximum speed for the constant speed.
NC programs contained in this User's Manual are suggestions for solutions. The NC programs or individual NC blocks must be adapted before being used on a machine.
Some NC programs depend on the machine kinematics. Adapt these NC programs to your machine kinematics before the first test run.
In addition, test the NC programs using the simulation before the actual program run.
With a program test you determine whether the NC program can be used with the available software options, the active machine kinematics and the current machine configuration.
11 FUNCTION TURNDATA SPIN VCONST:ON VC:100 GEARRANGE:2 | ; Constant surface speed with gear range 2 |
The NC function includes the following syntax elements:
Syntax element | Meaning |
---|---|
FUNCTION TURNDATA SPIN | Syntax initiator for speed definition in turning mode |
VCONST OFF or ON | Definition of a constant cutting speed or constant surface speed Optional syntax element |
VC | Value for the surface speed Optional syntax element |
S or SMAX | Constant speed or speed limitation Optional syntax element |
GEARRANGE | Gear range for the lathe spindle Optional syntax element |
With turning, feed rates are often specified in millimeters per revolution. Use the miscellaneous function M136 for this on the control.
With turning, feed rates are often specified in millimeters per revolution. The control thus moves the tool at a defined value for every spindle rotation. The resulting contouring feed rate is thus dependent on the speed of the turning spindle. The control increases the feed rate at high spindle speeds and reduces it at low spindle speeds. This enables you to machine with uniform cutting depth and constant cutting force, thus achieving constant chip thickness
During many turning operations, it is not possible to maintain constant surface speeds (VCONST: ON) because the maximum spindle speed is reached first. Use the machine parameter facMinFeedTurnSMAX (no. 201009) to define the behavior of the control after the maximum speed has been reached.