How to Maintain the Processing Center?

The service life of CNC machining center is more than 8-10 years. But not all users' devices can take this long. It is not entirely a question of product quality. There is also a very important factor that is the maintenance and maintenance of the equipment. Many operators only care about the efficiency in front of them, but forget to clean and maintain the equipment after work. Therefore, regular inspection of equipment is a must.

Compared with traditional machine tools, machining center has fundamental differences in structure and control, but there are still similarities between maintenance and maintenance and traditional machine tools. Due to various reasons, most users often lack normal maintenance of machine tools, causing serious economic losses due to sick work. According to the service experience of our company's maintenance personnel working at the site, it is concluded that more than 60% of the problems of machine tools are due to lack of good maintenance, which causes failures. In response to such problems, we specially introduce machine tool maintenance services to carefully maintain the machine tools. The hidden troubles are diagnosed and eliminated in advance, so that the machine tools can always maintain a good working condition.

CNC Machining Center

The machining centers manufacturing introduces you to the daily maintenance and maintenance of machining centers.

1. Mechanical part maintenance

(1) Many users have lost the accuracy of the machine tool due to foundation and operation errors after the machine tool is installed. The first thing we need to do is to check and adjust the level of the machine tool strictly in accordance with the maintenance manual of the machining center and the operating procedures of the machining center. Because the level is the fundamental of the accuracy of the machine tool, and also the basis for adjusting other indicators of the machine tool.

(2) Adjust the clearances of the iron plugs on each axis of the machine to ensure that it is the clearance required by the machining center. Be careful not to rush the adjustment of the plug, unless the level is adjusted. The gap in the direction of the table and saddle is 0.012mm, the direction of the column is 0.008 ～ 0.01mm, and the bar plug of the bed saddle and column is 0.015mm. Repeat the inspection until the gaps are stable. The purpose is to prevent the non-uniform friction of the plugging iron, reduce the thermal deformation of the machine tool, and ensure the positioning accuracy of the machine tool.

(3) Check the shaft motor and the screw for wear and clearance, and check whether the support bearings at both ends of the shaft are damaged. When the coupling or bearing is damaged, it will increase the noise of the machine tool, affect the transmission accuracy of the machine tool, damage the screw cooling seal, cause cutting fluid leakage, and seriously affect the life of the screw and spindle.

(4) Adjust the geometric accuracy of the machine tool to restore or meet the requirements of the machine tool. Because geometric accuracy is the basis of the comprehensive performance of the machine tool. For example, the poor perpendicularity of XZ and YZ will affect the coaxiality and symmetry of the workpiece, and the poor perpendicularity of the spindle to the table will affect the parallelism of the workpiece. Therefore, the restoration of geometric accuracy is also the focus of our maintenance.

(5) Check the protective cover of each axis and replace it if necessary. A bad protective cover will directly accelerate the wear of the guide rail. If there are major changes

Shape, not only will increase the load on the machine tool, but also cause greater damage to the guide rail.

(6) Straightening of the screw, because some users deform the screw after the machine tool collides or the gap between the plugs is not good, which directly affects the machining accuracy of the machine tool. We first loosen the lead screw to a natural state, and then install the lead screw in accordance with the maintenance procedures to ensure that the lead screw is as free from tangential forces as possible during movement, so that the lead screw is also in a natural state during processing.

(7) Check and adjust the belt drive system of the machine tool spindle, adjust the tightness of the V belt properly to prevent the machine tool from slipping or losing during processing, replace the V belt of the spindle if necessary, and check the 10 000 r / min spindle high and low gear conversion How much oil is in the cylinder of the pressure pulley. If necessary, oil shortage will cause failure during high-low gear shift, which will seriously affect the surface roughness during milling and reduce the cutting torque.

(8) Cleaning and adjustment of the tool magazine. Adjust the rotation of the tool magazine so that it is parallel to the table. If necessary, replace the spring, adjust the angle of the spindle directional bridge and the rotation coefficient of the tool magazine, and add grease to each moving part.

(9) Maintenance of the pneumatic system, cleaning impurities and moisture in the compressed gas, checking the amount of oil in the oil mist separator, checking whether the solenoid valves are working properly, checking the tightness in the pneumatic system, because the The quality directly affects the tool change and lubrication system.