The movement of the machine tool is the clearance, including the movement of the guide rod pushing the tool holder. Over time, it will wear out and cause excessive gaps, which will affect the processing data. Next, let's talk about the reasons and effects of CNC lathe clearance.

CNC lathe clearance reason:

1. There is a gap between the ball screw and the machine tool nut pair, which cannot make close contact and cause shaft movement.

2. With the use of machine tools, wear gradually intensifies, resulting in gaps.

The influence of CNC lathe clearance:

1. When the workbench retreats, the motor idles and the workbench does not move, causing a positioning error of ± D/2, which affects the accuracy of the machine tool.

Nuoxin CNC lathe

2. When the clearance is too large, the dynamic response characteristics deteriorate and oscillation occurs. Guangdong CNC lathe

Solution to excessive clearance of CNC lathe:

1. Adopting high-precision ball screw.

2. Pre tighten the screws during installation.

3. Use CNC system commands to compensate for gaps.

Measurement of Reverse Clearance Error in CNC Lathe

1. Measure the reverse clearance error D of the machine tool based on the difference between the feedback value of the grating and the position command

2. According to the difference between the actual position of the machine tool measured by the laser interferometer and the position command, the reverse clearance error D of the machine tool is measured.