During the operation of a CNC lathe, it is inevitable that the workpiece may become unstable. With years of experience in designing, developing, and producing CNC lathes, Shenyang Precision Machinery can effectively solve these problems. Below are detailed explanations of the corresponding methods for several common cases of workpiece instability in CNC lathes:

Phenomenon 1: The workpiece experiences a phenomenon of large or small taper angles

1. The horizontal placement of the CNC lathe was not adjusted properly, with one high and one low, resulting in unstable placement. To improve the stability of the CNC lathe, use a spirit level to adjust its levelness and lay a solid foundation. 

2. When turning a long shaft, the dedicated material is relatively hard and the cutting tool is relatively deep, resulting in a phenomenon of tool yielding: selecting a reasonable process and appropriate cutting feed to prevent tool yielding under stress

3. The tailstock pin is not concentric with the spindle: adjust the tailstock.

Phenomenon 2: The driver phase light is normal, but the size of the processed workpiece varies from large to small

Note: This phenomenon is generally caused by the spindle, and the high-speed rolling of the spindle causes severe bearing wear, leading to changes in the machining scale.

1. The CNC lathe drag plate has been running at high speed for a long time, causing wear on the lead screw and bearings: use a dial gauge to lean against the bottom of the tool holder, and together go through a fixed cycle program of system correction to check the repeated positioning accuracy of the drag plate, adjust the clearance of the lead screw, and replace the bearings.

2. Error in the repeated positioning accuracy of the tool holder during long-term use: Use a dial gauge to check the repeated positioning accuracy of the tool holder, adjust the machinery or replace the tool holder

3. The drag board can accurately return to the starting point of processing every time, but the dimensions of the processed workpiece still change. Use a dial gauge to check if the processed workpiece accurately returns to the starting point of the program. If so, inspect the spindle and replace the bearings.