A brief introduction to the application of bearings in tufting machines_Latest News

The application of rolling on is mainly used in the following three parts: main shaft, ball screw and general transmission shaft.

Spindle bearings are the basic accessories of machine tools, and their performance directly affects the speed of machine tools, rotation accuracy, rigidity, anti-vibration vibration cutting performance, noise, temperature rise and thermal deformation, etc., which in turn affects the accuracy and surface quality of machined parts. . Therefore, high-performance tufting machine tools must be equipped with high-performance bearings.

The accuracy of rolling bearings is generally divided into five grades: P0, P6, P5, P4, and P2. The accuracy of the bearings used on the spindles of precision machine tools should be P5 and above. Support, you need to use P4 and above ultra-fine bearings.

Main shaft bearings for tufting machine tools generally include six structural types: deep groove ball bearings, angular touch ball bearings, cylindrical roller bearings, two-way thrust angular touch ball bearings, tapered roller bearings and thrust bearings.

With the rapid development of numerical control technology,“Composite, high-speed, intelligent, fine, environmentally friendly”It has become an important trend in the development of today's machine tool industry technology. Among them, high-speed machining can effectively increase the machining power of the machine tool and shorten the machining cycle of the workpiece. This requires the machine tool spindle and its related components to adapt to the needs of high-speed machining. At present, the spindle bearings of CNC machine tools are basically limited to four structural types: angular touch ball bearings, cylindrical roller bearings, two-way thrust angular touch ball bearings and tapered roller bearings. This article comes from Foshan MX brushmachinery Machinery Factory

With the high-speed development of the spindle of CNC machine tools, ceramic materials (mainly Si3N4 engineering ceramics) have become high-speed manufacturing due to their excellent properties such as low density, high elastic modulus, small thermal expansion coefficient, wear resistance, high temperature resistance, and corrosion resistance. Ideal material for precision bearings. Ceramic bearings are used more and more widely. In view of the difficulty of machining ceramic materials, precision ceramic bearings are mostly hybrid ceramic ball bearings in which the rolling body is ceramic and the inner and outer rings are still made of chromium steel.

The ball screw pair is a fine, efficient and flexible transmission component. In addition to the high-precision screw, nut and ball, attention should also be paid to the selection of bearings with high axial rigidity, small frictional moment and high working precision. Ball screw supports used to be bidirectional thrust angular contact ball bearings, tapered roller bearings, needle roller and thrust roller combined bearings, deep groove ball bearings, and thrust ball bearings. At present, the most used ball screw support is 60°Single row thrust angular touch ball bearings with touch angle, and the precision grade of INA bearings is mainly P4 and above.

The tumble bearing installed on the ordinary transmission shaft for tufting machine tools has the same requirements and selection as the general mechanical transmission bearings. It only needs to meet the requirements of strength and life, and the speed does not exceed the specified limit speed of the bearing.

In general, the machine tool bearings we refer to refer to the main shaft bearings and ball screw bearings of the tufting machine, and the fine machine tool bearings refer to the main shaft bearings and screw bearings with an accuracy of P5 or higher.