High performance spindle machine tool is machining accuracy and efficiency of the premise to meet the speed, accuracy, strength, power, torque characteristics corresponding high reliability, high cost of the spindle machine tool.
If the bearings of the machine tool spindle bearing (angular contact ball bearings, roller bearings), fluid bearings (bearings, hydrostatic bearings and plain bearings), gas bearings and magnetic bearings, etc., can be divided in accordance with the engine, the mechanical connection pin and the pin are divided.
Spindle, the spindle motor according to the function and structure of the spindle to the integration of new components, but the need for a belt or gear links, high speed, high precision, wide speed range is, noise and vibration small, fast start and stop the potential benefits. Replace the traditional mechanical power shaft of the spindle of the machine tool industry is the trend of development.
Spindle motor according to the type of model can be used in the magnet wire asynchronous and synchronous motor spindles are permanently divided.
Among the objective requirements of the industry of machine tool spindle bearing angular contact thrust ball bearings, liquid (moving) of the spindle with gas bearings and hydrostatic spindle, the objective of market development, but also the axis of academic research. Contact ball bearings are ideal for high-speed bearings with friction is small power consumption, low cost, simple serialization and standardization, etc., the extremely high speed, high precision, high rigidity, the machining center, CNC milling , turning, grinding and high speed engraving and milling machine for a wide range of applications, is the main technical difficulty, accuracy and reliability to improve the quality of life. Spindle hydrostatic liquid (in motion) with a liquid "film" as a carrier with significant was "errors effect" and the damping resistance, much higher than the pin with precision, stiffness, wear, durability, precision machine tools, ultra-precision widely applied, the main technical difficulty at high speeds, temperature rise and thermal deformation is controlled. Gas-bearing spindle with "film" as a carrier, accuracy and the speed limit higher than the liquid (moving) of the spindle and hydrostatic bearing spindle motor, thermal stability, ultra-precision machine tools and printed circuit board (PCD) component of drilling required has its flaws, the viability low technological requirements.
