CNC lathe processing is a high-precision, high-efficiency automatic machine tool that uses digital information to control the displacement of parts and cutters. It is an effective way to solve the problems of variable varieties, small batches, complex shapes, and high precision of aerospace products and parts, and to achieve high-efficiency and automated processing.
The connection between the servo motor shaft and the lead screw is loose, causing the lead screw and the motor to be out of sync, resulting in dimensional errors. When testing, only need to make a mark on the coupling between the servo motor and the lead screw, and move the workbench and the tool holder back and forth with a faster magnification. Due to the inertia of the workbench (or turret), the two couplings will be affected. Obvious relative movement occurs at the end. This type of fault is usually manifested as the processing size changes in only one direction, and it can be eliminated only by evenly tightening the coupling screws.
2. Poor lubrication between the ball screw and the nut increases the movement resistance of the worktable and the tool post, and the movement instructions cannot be completely and accurately executed. Such failures are usually manifested as irregular changes in the size of the parts within a few wires, and the failure can be eliminated only by improving the lubrication.
3. Excessive movement resistance of the machine tool worktable (or tool post) is generally caused by over-tight adjustment of the inserts and poor lubrication of the machine tool guide rail surface. This failure phenomenon is generally manifested as irregular changes in the size of the parts within a few wires. The inspection can be carried out by observing the size and change of the position deviation of DGN800-804. Usually, the difference is large when the forward and reverse directions are stationary. Such failures only need to readjust the lines and improve the lubrication of the guide rails.
4. The rolling bearing is worn or adjusted improperly, resulting in excessive movement resistance. This failure phenomenon is also usually manifested as an irregular change in size within a few threads. The inspection can be carried out through the position deviation of DGN800-804, and the method is the same as above. For such failures, only the worn bearings need to be replaced and carefully adjusted, and the failures can be eliminated.
5. The screw gap or gap compensation is improper, and the fault can be eliminated by adjusting the gap or changing the gap compensation value.