At present, the domestic production of automotive tube processing equipment can be roughly divided into three types: economic bending machine, popular bending machine and high-grade bending machine. The economic type is basically open-loop control; Popular pipe bending machine adopts semi-closed loop control technology, the resolution can reach 1 micron; High-grade pipe bending machine adopts closed-loop control, and has high precision, high speed, compound, with a variety of compensation functions, new control functions, automatic diagnosis, resolution can reach 0.1 micron, the computer can be programmed instead of people. So what are the common failures of automotive tube processing equipment?

1. Spindle component failure. Due to the use of adjustable speed motor, automotive tube processing equipment spindle box structure is relatively simple, easy to fail is the tool handle automatic tightening device, automatic speed regulating device, etc.

2, automatic tool change device (ATC) failure. More than 50% of the faults of machining center pipe bending machine with automatic tool changing device are related to automatic tool changing device, mainly in the following ways: tool movement fault, positioning error is too large, the manipulator clamping tool handle is unstable, and the manipulator movement error is large. When the fault is serious, the tool changing action is stuck and the pipe bending machine is forced to stop working.

3. Feed transmission chain failure. Since the guide rail generally uses rolling friction pairs, the feed transmission chain failure is mainly caused by the decline in movement quality, such as mechanical parts do not move to the specified position, operation disruption, positioning accuracy decline, reverse clearance increase, mechanical crawling, bearing noise increase (generally after a crash), etc., this part of the fault can be adjusted by adjusting the preload of each moving pair. The solution is to adjust the loosening link, improve the motion accuracy and adjust the compensation link. 4. Failure of supporting accessories. The reliability of the cooling device, chip removal device, guide rail shield, coolant shield, spindle cooling constant temperature tank, hydraulic tank, etc. on automotive tube processing equipment is not high, which will also cause failure and affect the normal operation.

5, used to detect the travel switch clamping failure of the moving position of each axis. In automotive tube processing equipment, in order to ensure the reliability of automatic work, a large number of travel switches are used to detect the moving position. This is also a more common symptom, I hope you can analyze after understanding, know to solve the fault.

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