Q&A
The important application of rolling bearing in stone carving machine
The use of rolling bearings in engraving machine is mainly used in the following three parts: spindle, ball screw and general drive shaft. This is an important part of the engraving machine.
Spindle bearing, as a basic part of machine tool, its performance directly affects the machine tool's speed, rotary accuracy, rigidity, anti-vibration cutting performance, noise, temperature rise and thermal deformation, and then affects the precision of machining parts, surface quality, etc. Therefore, high-performance machine tools must be matched with high-performance bearings.
The precision of rolling bearings is generally divided into FIVE grades: P0, P6, P5, P4 and P2. The precision of bearings on the spindle of precision machine tools should be P5 and its superior, while for the spindle support of high-speed and high-precision machine tools such as CNC machines and machining centers, P4 and its superior ultra-precision bearings should be selected.
Spindle bearings for machine tools usually include deep groove ball bearings, angular contact ball bearings, cylindrical roller bearings, bi-directional thrust angular contact ball bearings, tapered roller bearings and thrust bearings.
With the rapid development of numerical control technology, "compound, high-speed, intelligent, precision, environmental protection" has become the main trend of the development of machine tool industry technology. Among them, high speed machining can effectively improve the machining efficiency of machine tool and shorten the machining cycle of workpiece. This requires the spindle and its related components to adapt to the needs of high-speed machining. At present, CNC machine tool spindle bearings are basically limited to angular contact ball bearings, cylindrical roller bearings, two-way thrust angular contact ball bearings and tapered roller bearings and other four structural types.
With the high-speed development of CNC machine tool spindle, ceramic materials (mainly refers to Si3N4 engineering ceramics) because of its small density, high elastic modulus, small thermal expansion coefficient, wear resistance, high temperature resistance, corrosion resistance and other excellent properties, so as to become the ideal material for manufacturing high-speed precision bearings. Ceramic bearings are more and more widely used. In view of the difficulty of machining ceramic materials, precision ceramic bearings are mostly mixed ceramic ball bearings whose rolling body is ceramic and whose inner and outer rings are still made of chrome steel.
Ball screw pair as precision, efficient and sensitive transmission components, in addition to the use of high-precision screw, nut and ball, should also pay attention to the selection of high axial stiffness, small friction torque, high precision bearings. Ball screw support in the past commonly used two-way thrust angular contact ball bearings, tapered roller bearings, needle roller and thrust roller combined bearings, deep groove ball bearings and thrust ball bearings.
In stone machinery, under normal circumstances, the machine tool rolling bearing we refer to refers to the machine tool spindle bearing and ball screw bearing, precision machine tool bearing refers to the precision of P5 and its P5 superior spindle bearing and screw bearing.
Spindle bearing, as a basic part of machine tool, its performance directly affects the machine tool's speed, rotary accuracy, rigidity, anti-vibration cutting performance, noise, temperature rise and thermal deformation, and then affects the precision of machining parts, surface quality, etc. Therefore, high-performance machine tools must be matched with high-performance bearings.
The precision of rolling bearings is generally divided into FIVE grades: P0, P6, P5, P4 and P2. The precision of bearings on the spindle of precision machine tools should be P5 and its superior, while for the spindle support of high-speed and high-precision machine tools such as CNC machines and machining centers, P4 and its superior ultra-precision bearings should be selected.
Spindle bearings for machine tools usually include deep groove ball bearings, angular contact ball bearings, cylindrical roller bearings, bi-directional thrust angular contact ball bearings, tapered roller bearings and thrust bearings.
With the rapid development of numerical control technology, "compound, high-speed, intelligent, precision, environmental protection" has become the main trend of the development of machine tool industry technology. Among them, high speed machining can effectively improve the machining efficiency of machine tool and shorten the machining cycle of workpiece. This requires the spindle and its related components to adapt to the needs of high-speed machining. At present, CNC machine tool spindle bearings are basically limited to angular contact ball bearings, cylindrical roller bearings, two-way thrust angular contact ball bearings and tapered roller bearings and other four structural types.
With the high-speed development of CNC machine tool spindle, ceramic materials (mainly refers to Si3N4 engineering ceramics) because of its small density, high elastic modulus, small thermal expansion coefficient, wear resistance, high temperature resistance, corrosion resistance and other excellent properties, so as to become the ideal material for manufacturing high-speed precision bearings. Ceramic bearings are more and more widely used. In view of the difficulty of machining ceramic materials, precision ceramic bearings are mostly mixed ceramic ball bearings whose rolling body is ceramic and whose inner and outer rings are still made of chrome steel.
Ball screw pair as precision, efficient and sensitive transmission components, in addition to the use of high-precision screw, nut and ball, should also pay attention to the selection of high axial stiffness, small friction torque, high precision bearings. Ball screw support in the past commonly used two-way thrust angular contact ball bearings, tapered roller bearings, needle roller and thrust roller combined bearings, deep groove ball bearings and thrust ball bearings.
In stone machinery, under normal circumstances, the machine tool rolling bearing we refer to refers to the machine tool spindle bearing and ball screw bearing, precision machine tool bearing refers to the precision of P5 and its P5 superior spindle bearing and screw bearing.