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High Performance Machine Tool Bearing
2018-07-25 by zysbearing
Machine tool spindle is the core component, its function is to drive tool (grinding wheel) or the workpiece rotate, to achieve high speed precision machining. With the development of modern industry, the requirement of machining accuracy and efficiency of the machine tool is increasing, and the requirement of the machine tool's performance is higher and higher, the traditional concept of high speed spindle has been difficult to fully describe the technical connotation of the spindle of the machine tool. High performance machine tool spindle is not only able to meet the machining precision and efficiency, and the speed, accuracy, stiffness, power, torque matching characteristics are good, it is a kind of high reliability, high performance and high cost of the machine tool spindle. According to the type of machine tool spindle bearings used can be divided into rolling bearing(angular contact ball bearing, roller bearing), liquid sliding bearing (hydrodynamic journal bearing, hydrostatic bearing, hybrid bearing), gas bearings and magnetic suspension bearing, etc., according to the connection mode with the motor can be divided into mechanical spindle and electric spindle. The electric spindle is a new type of main shaft component which integrates the function of the machine tool spindle and motor function, it saves the belt or gear transmission, advantages: high speed, high precision, wide speed range, low noise and vibration, quick start and accurate stop and so on. Replacing the traditional mechanical spindle with the electric spindle is the development trend of the machine tool industry.