济南江河数控

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江河数控、雕刻机

2013-07-25 19:03Engraving machine bearings

With the rapid development of digital technology, "complex, high-speed, intelligent, sophisticated, environmentally friendly" machine tool industry has become the main trend of technological development, high-speed processing can effectively improve the machining efficiency and shorten the machining cycle, which requires spindle and its associated components to adapt to the needs of high-speed machining. Currently, CNC machine tool spindle bearings are basically limited to the angular contact ball bearings, cylindrical roller bearings, angular contact thrust ball bearings and tapered roller bearings and other types of four structures, bearing on the engraving machine used mainly for the following three parts : spindles, ball screws, and generally drive shaft, in normal circumstances, we have mentioned is the machine rolling machine tool spindle bearings and ball screw bearings.
Machine tool spindle bearings as a basis for supporting parts, and its performance directly affects the speed of the machine, rotary precision, rigidity, resistance to cutting chatter vibration, noise, temperature and thermal deformation, thereby affecting the precision machined parts, surface quality. Therefore, the machine must be equipped with a high-performance high-performance bearings. As a precision ball screw, efficient, sensitive transmission components, should be used in addition to high-precision screw, nut and ball, we must also pay attention to use axial stiffness, friction torque, high precision bearings running. Thrust ball bearing in the past used angular contact ball bearings, tapered roller bearings, needle roller and thrust roller bearings, deep groove ball bearings and thrust ball bearings. Currently the most used ball bearing contact angle of 60 ° single row angular contact ball bearings, and accuracy class is dominated by P4 level and above. General bearing on the drive shaft, and its requirements, and selection and general machinery drive bearing the same, just to meet the strength and life requirements, speed does not exceed the speed limit can be specified bearing.
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