Maintenance of CNC machine tools

A CNC machine tool is an automated machine tool equipped with a program control system. The control system can logically process the program with control codes or other symbolic instructions, and decode it, so that the machine tool can operate the CNC bending machine and process the parts.
It has higher requirements for the quality of operators and higher technical requirements for maintenance personnel. Regarding the maintenance of the mechanical part of CNC machine tools, let’s talk about some of them below.
1. The seal of the spindle components not only prevents dust, chips and cutting fluid from entering the spindle components, but also prevents the leakage of lubricating oil. There are contact and non-contact seals for the main shaft components. For contact seals using linoleum rings and oil-resistant rubber seals, pay attention to checking for aging and damage; for non-contact seals, in order to prevent leakage, it is important to ensure that the return oil can be drained as soon as possible, and to ensure that the return hole is unobstructed .
2. Maintenance and maintenance of spindle components
The main shaft component is an important component of the mechanical part of the CNC machine tool, which is mainly composed of the main shaft, the bearing, the spindle stop device, the automatic clamping and the chip removal device.
The lubrication, cooling and sealing of the spindle components of CNC machine tools are several issues worthy of attention during the use and maintenance of the machine tools.
First of all, a good lubrication effect can reduce the working temperature of the bearing and prolong its service life; for this reason, it should be noted in operation and use: at low speed, use grease and oil circulating lubrication; at high speed, use oil mist and oil-air lubrication. However, when grease lubrication is used, the enclosed amount of the spindle bearing is usually 10% of the bearing space volume. Do not fill it up at will, because too much grease will increase the spindle heat. For oil circulating lubrication, check the spindle lubrication constant temperature oil tank every day during operation to see if the oil is sufficient. If the oil is insufficient, add lubricating oil in time; at the same time, check whether the lubricating oil temperature range is appropriate.
Second, the cooling of the main shaft components is mainly to reduce bearing heat and effectively control the heat source.