Cylindrical grinding
Application
Cylindrical grinding on a milling machine enables you to perform complete machining tasks on a machine without rechucking. Cylindrical grinding helps you to attain higher accuracies and better surface definitions than with turning.
Related topics
- Cycles for grinding
- Parameters for grinding tools
- Dressing of grinding tools
- Turning (#50 / #4-03-1)
Requirements
- Grinding (#156 / #4-04-1) software option
- Machine with at least two rotary axes, one of them as a rotary table axis
- Available kinematics description for jig grinding
The machine manufacturer creates the kinematics description.
Description of function
Machining is performed in the cylindrical grinding mode FUNCTION MODE GRIND.
Switching the operating mode with FUNCTION MODE
Depending on the machining direction and the actual task, cylindrical grinding can include the following operations, among others:
- Long-stroke cylindrical grinding
- Short-stroke cylindrical grinding
- Plunge grinding
- Shoulder grinding
- Multiple recessing
The control offers cycles for these operations. These cycles can also be used with inclined rotary axes.
For cylindrical grinding operations you always program a definition cycle, at least one infeed cycle, and a conclusion cycle.
Coordinate plane for cylindrical grinding
The assignment of the axes with cylindrical grinding is defined so that the X coordinates describe the diameter of the workpiece and the Z coordinates the longitudinal positions.
This means that you always program with ZX as the machining plane. The kinematics of the respective machine determine which axes the machine uses for the actual movements. NC programs with cylindrical grinding cycles are largely independent of the machine kinematics.
Notes
- Refer to your machine manual.
If your machine tool is equipped with an acoustic-emission sensor, the control can evaluate the signal in the infeed cycles. The control can thus prevent reciprocating strokes from taking place in air.
- Dress the grinding tool either before or after a cylindrical grinding operation.
Program structure for cylindrical grinding
Here you see a possible program structure for cylindrical grinding.
BLK FORM... | ||
TOOL CALL... | ||
Dressing of grinding tools (if applicable) | ... | ; Macro or FUNCTION DRESS |
Definition cycle | CYCL DEF 1041 LONG STROKE DEF. | |
CYCL CALL... | ||
Infeed cycle | CYCL DEF 1051 STEP. CYLIND. GRIND | ; At least one infeed cycle is necessary (e.g., roughing) |
CYCL CALL... | ||
CYCL DEF 1051 STEP. CYLIND. GRIND | ; Optional additional infeed cycle (e.g., finishing) | |
CYCL CALL... | ||
CYCL DEF 1051 STEP. CYLIND. GRIND | ; Optional additional infeed cycle (e.g., fine finishing) | |
CYCL CALL... | ||
Conclusion cycle | CYCL DEF 1040 END CYLIND. GRINDING | |
CYCL CALL... | ||
... |
More detailed information
- Dressing
- Cycles for grinding
- Definition cycle 1041 LONG STROKE DEF.
- Infeed cycle 1051 STEP. CYLIND. GRIND
- Conclusion cycle 1040 END CYLIND. GRINDING