Bearing of machine tool main shaft chooses standard and bearing oily function to ask

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  • source:SEENER CNC Machining
Dispatch of net of machine tool of Chinese numerical control: The development of machine tool industry in heavy industry is unusually rapid, aeriform the development that drove chain type industry. Bearing of machine tool main shaft serves as among them a the most important part, its choose a standard to must consult multinomial element. To make sure the without reason barrier of bearing applies, oily to using bearing attention is indispensable. The development of the rotate speed of 　 of choice standard 　 of bearing of machine tool main shaft and 　 of temperature rise 　 as science and technology, rotate speed of bearing of machine tool main shaft is higher and higher, gearshift range is bigger and bigger, accordingly, taller and taller also to the requirement of stability of movement of bearing high speed. Temperature rise of bearing of machine tool main shaft is the main factor that limits bearing rotate speed. Normally the circumstance falls, means of grade of type of right choice bearing, public errand, configuration, windage (preload carries on his shoulder or back) size, lubricant and lubricant means, the high speed performance of scroll bearing can improve on certain level. Life of machine tool main shaft and 　 of carrying capacity 　 are right for common machine tool, the life of main shaft component basically is the term of service that shows its maintain main shaft precision, accordingly, the precision of demand bearing maintains function to satisfy the requirement of life of main shaft component. To heavy-duty machine tool or puissant cutting machine tool, answer to consider the carrying capacity of bearing above all. Stiffness and fight brace up sexual 　 　 is the treatment quality that assures a machine tool, must make main shaft system has enough tigidity, can arise otherwise bigger answer reflect an error even flutter. Fight brace up the gender is the ability that shows counteractive forced vibration and self-excitation shake. Of main shaft component fight brace up the gender depends on the stiffness of main shaft and bearing and damp. Use the stiffness that tightens scroll bearing to be able to improve main shaft system effectively beforehand. Noise 　 　 is in high speed grinder, the noise of wheelhead bearing is overall the bases in noise, should choose bearing of low noise scroll. The function of oil of bearing of machine tool main shaft asks bearing of main shaft of 　 　 machine tool is oily is the special lubricant of accurate machine tool and bearing of similar device main shaft, its working precision to assuring main shaft and performance characteristics, lengthen its service life to having very main effect, call bearing oil again. Its are main function asks to include: Appropriate viscosity and stick 　 of lukewarm characteristic 　 goodly to make temperature of bearing of machine tool main shaft is not sent exorbitant and make heat of machine tool happening changes model, the influence machines precision or make bearing lubricant and undesirable, should wait for the lube that chooses proper temperature to ask its have according to structure of main shaft bearing, rotate speed and bearing clearance stick lukewarm character goodly, when because temperature of main shaft job and environmental temperature change are bigger,preventing, the change of viscosity is too big and affect its lubricant function. Good lubricity 　 　 has even oily film to make maintain between main shaft and bearing interface, and when be started in main shaft or suspending negative charge of athletic generation concussion, oily film also is not sent destroy, the move since the lubricant property that keeps good reduces attrition and attrition heat, reduce the main shaft temperature rise, effect that assures to machine precision, the requirement has good lubricant performance. Fight main shaft of machine tool of oxidisability 　 　 goodly using a circulation when lubricant means, oil of bearing of requirement main shaft is used for a long time and do not deteriorate so the requirement is had fight oxidisability goodly. 　 of good rust-preventing characteristic 　 is tasted as a result of oil in main shaft lubricant system works the agglomeration water in the inevitably meeting interfuse air in the process or machine tool cooling fluid, because this requirement oil is tasted,have good rust-preventing characteristic. (original title: Standard of choice of bearing of machine tool main shaft and bearing oily function ask) CNC Milling CNC Machining