The guide rail of numerical machine adopts the characteristics of linear guide rail, low noise, fast speed, high precision, long service life, etc., and the working efficiency of straight row tool holder is high. The guide rail adopts medium frequency quenching grinding and plastering process, which has good wear resistance and accuracy retention.

The electric spindle structure of CNC lathe adopts the typical structure of two-point support at front and rear ends, and the electric spindle has high stiffness. The main drive is three stepless frequency conversion speed regulation range of 21 ~ 1500r/min; The main transmission gear pair is hardened grinding treatment, each transmission pair and rolling bearings are lubricated by strong oil, with good high speed and low temperature rise performance.

The electric spindle is the key functional part of numerical machine for high speed and precision machining. In order to ensure the actual operation needs of the lathe, it is necessary to regularly carry out reasonable maintenance and repair of the electric spindle, which is not only conducive to reducing the production cost of the product, but also a prerequisite for improving production efficiency and processing quality.

Maintenance work of numerical machine spindle:

1. Operate strictly in accordance with the instruction manual

In the application of CNC lathes, the operator must strictly follow the instructions for relevant operations, especially to understand the basic structure and performance of the electric spindle and related accessories, especially to be familiar with the basic requirements of the electric spindle in handling, installation, cooling water supply, oil supply, power supply, gas supply, etc., must strictly control the over-fixed power operation during the operation process. To ensure the performance of the motorized spindle, further reduce its maintenance costs.

2, keep the electric spindle clean

For the electric spindle that is not used in the short term, the water in its water chamber must be completely blown by compressed air, the sleeve of the electric spindle, the tool, etc., should also be regularly applied with protective oil, and the protective cover must be installed at the junction of the cooling water pipe and the oil and gas pipe. For the operation workshop, dust removal treatment should also be carried out regularly to prevent the relevant components of the motorized spindle from falling into the dust and affecting the efficiency.

3. Strengthen real-time monitoring during operation

In the operation process of CNC lathe, the operator must strictly follow the relevant operation technical regulations, strengthen real-time monitoring of the gas pipe and oil pipe of the electric spindle, check whether there is a problem of gas leakage, and whether the oil supply meets the operation needs. In the operation monitoring, the operator should also pay attention to whether the electric spindle has abnormal sound problems, whether the temperature of the housing is normal, and whether the surface quality defects or dimensional tolerances occur during the processing of high-precision parts.

In the running of numerical machine, it is necessary to avoid the phenomenon of sudden "braking" as much as possible, so as to cause the bearing stuck or the workpiece size is not up to standard, which is unfavorable to the production link.

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