Rigid tapping is a CNC machining process where the tap is driven into the hole at the same speed as the spindle while maintaining synchronization. This method eliminates the need for floating tap holders and provides a more accurate and efficient tapping process.
Usage Format
The G-code for rigid tapping typically follows this format:
- G84.2: Right-hand rigid tapping
- G84.3: Left-hand rigid tapping
G84.2/G84.3 R_[depth] P_[dwell] F_[feedrate]
Explanation
- R: Depth of the tap into the material.
- P: Dwell time at the bottom of the hole.
- F: Feed rate of the tap, usually in threads per inch or millimeters per thread.
During the operation, the spindle rotates in the direction of the tap, either clockwise or counterclockwise, and retracts with a synchronized reverse rotation.
Example
Here’s a simple example of right-hand rigid tapping a hole with a depth of 10mm, a dwell time of 1 second, and a feed rate of 1.5mm per thread:
G84.2 R10 P1 F1.5
For left-hand rigid tapping, simply replace G84.2 with G84.3 in the code.