Precision electric spindleAdvantages: Precision electric spindles have the advantages of compact structure, light weight, low inertia, low vibration, low noise, and fast response. In addition, it has high speed and high power, simplifying the design of machine tools, selling electric spindles, and is easy to achieve spindle positioning, which is an ideal structure in high-speed spindle units. The electric spindle bearing adopts high-speed bearing technology, which is wear-resistant and heat-resistant, and has a service life several times longer than traditional bearings. Product features: high speed, high precision, low noise, inner ring with locking mouth structure is more suitable for spray lubrication.

Stepper motor: Precision electric spindle is a new technology developed in the field of CNC machine tools in recent years that integrates machine tool spindle and spindle motor. The sales of electric spindle, combined with linear motor technology and high-speed tool technology, will push high-speed machining into a new era. Electric spindle is a set of components, including the electric spindle itself and its accessories: electric spindle, high-frequency frequency converter, oil mist lubricator, cooling device, built-in encoder, and tool changer.

Precision electric spindle heat treatment: The spindle material is 12CrNi3 alloy carburizing steel, which has good comprehensive mechanical properties after quenching and low-temperature tempering or high-temperature tempering. It has high low-temperature toughness, low notch sensitivity, good cutting performance, low hardness and good plasticity after annealing.

Using forged blanks, the heat treatment method is as follows: normalizing treatment after forging → high-temperature aging treatment after driving → carburizing treatment of the main shaft neck and 7:24 taper hole, with a carburizing layer depth of → quenching treatment of the main shaft neck and 7:24 taper hole, with a quenching hardness of HRC59, for main shaft heat treatment, and sandblasting treatment for slicing experiments (fine sand is sprayed on the left protruding key part and each empty knife groove) → qualitative treatment in oil after rough grinding of the main shaft → heating of the electric main shaft spindle and hot assembly of the main shaft.

Machining process: The structural characteristics of the built-in high-speed electric spindle determine the particularity of the spindle machining process. In order to avoid the loss of rotational accuracy caused by thermal deformation of the electric spindle during the rotor thermal loading process or the unbalanced assembly of the spindle rotor caused by assembly errors, the electric spindle rotor must be assembled with the machine tool spindle before precision machining.