CNC machine tools commonly used coolant what

Currently used in the domestic machining coolant is broadly divided into three categories:

1, the first category for the traditional completely water-soluble coolant (containing a large number of nitrites), emulsified or soapy water (containing a large number of oil and nitrites, etc.) and mineral oil and animal and vegetable oils; this category of coolant is mainly low-cost, lubrication performance is poor.

2, the second category of foreign imports of coolant, completely water-soluble, emulsified and oil-based three kinds of coolant, this category of coolant use better, but the cost is higher.

3, the third category is a new type of domestic coolant developed in recent years, with the same performance of foreign products, environmental protection is good. This type of coolant price is moderate, especially suitable for good supporting facilities for grinding machines, machining centers, large-scale machining equipment.

Expanded information:

The lubrication methods commonly used on CNC machine tools are grease lubrication and oil lubrication. Two ways. Grease lubrication is a CNC machine tool spindle support bearings, ball screw support bearings and low-speed rolling line guide the most commonly used lubrication; high-speed rolling linear guide, paste the plastic guide and speed gears and other oil lubrication; screw nut vice has the use of grease lubrication, there is also the use of oil lubrication.

1, grease lubrication

Grease lubrication does not require lubrication equipment, reliable, do not need to frequently add and replace the grease, easy maintenance, but the friction resistance. Support bearing grease sealing amount is generally 10% of the lubrication space volume, ball screw nut sub-grease wax sealing amount is generally 1/3 of the volume of its internal space. too much grease sealing will exacerbate the heating of moving parts. The use of grease lubrication, must take effective sealing measures in the structure, in order to prevent the coolant or lubricating oil inflow and make the grease lose efficacy.

Grease lubrication generally uses lithium-based and other high-grade grease. When it is necessary to add or replace the grease, its name and grade can consult the machine tool instruction manual.

2, oil lubrication

CNC machine tool oil lubrication is generally used centralized lubrication system. That is, from a lubricant supply source to a certain pressure of lubricant, through the main and secondary oil distributor, according to the required oil distribution to the lubrication point. At the same time, the system is equipped with monitoring of the lubrication time and times and fault alarm and shutdown functions to realize the automatic control of the lubrication system. Centralized lubrication system is characterized by timing, quantitative, accurate, efficient, easy to use and reliable, the lubricant is not reused, is conducive to improving the service life of the machine tool.

Centralized lubrication system according to the lubrication pump drive different ways, can be divided into manual oil supply and automatic lubrication system; according to the different ways of oil supply, can be divided into continuous lubrication system and intermittent lubrication system; continuous lubrication system in the lubrication process generates additional heat. Continuous oil supply system generates additional heat in the lubrication process and causes waste and pollution due to excessive oil supply, and often do not get the best lubrication effect. Intermittent oil supply system is a periodic quantitative lubricant supply to the lubrication point, so that the friction side of the formation and maintenance of the appropriate amount of lubricant film. At present, the CNC machine tool oil lubrication system is generally used intermittent oil supply system.

Centralized lubrication system according to the use of different lubrication components, can be divided into volumetric lubrication system, damping lubrication system, progressive lubrication system and oil and gas lubrication system.

Baidu Encyclopedia - Lubrication System of CNC Machine Tools