Electric spindle

Abstract

The invention discloses an electric spindle. The electric spindle comprises a spindle core, a motor rotor, a motor stator, a cooling jacket and a shell which are coaxially arranged, the exterior of the spindle core is sleeved with the motor rotor, the exterior of the motor rotor is sleeved with the motor stator, the motor rotor and the motor stator are rotatably connected, the exterior of the motor stator is sleeved with the cooling jacket, the exterior of the cooling jacket is sleeved with the shell, a cooling channel is arranged between the cooling jacket and the shell and communicates withexternal cooling liquid, and the shell is made of a carbon fiber material. According to the electric spindle, the shell is made of the carbon fiber material, a shell made of metal in the prior art isreplaced, carbon fibers have the good heat dissipation performance, the heat dissipation capability of the shell can be improved through the carbon fiber material, and then the heat dissipation performance of the spindle core is improved; the thermal deformation amount in the heating process is small, and the machining precision of the electric spindle can be improved; and meanwhile, the mass of the electric spindle can be decreased by adopting the shell made of the carbon fibers, and then carrying, loading and unloading are convenient.

Description

technical field [0001] The invention relates to the technical field of numerical control machine tools and peripheral supporting components, in particular to an electric spindle. Background technique [0002] The electric spindle is a new technology in the field of CNC machine tools that integrates the machine tool spindle and the spindle motor. Together with the linear motor technology and high-speed tool technology, the electric spindle pushes high-speed machining into a new era. The electric spindle is a set of components. The rotor of the motor is directly used as the spindle of the machine tool. The shell of the spindle unit is the motor base, and cooperates with other parts to realize the integration of the motor and the spindle of the machine tool. The electric spindle has the advantages of compact structure, light weight, small inertia, low noise, and fast response. The lathe servo spindle has high speed and high power, which simplifies the design of the machine tool...

AI Technical Summary

Problems solved by technology

Existing high-speed electric spindles usually use the metal casing of the spindle and the cooling water jacket to dissipate heat. The metal casing of the electric spindle not only has poor quality and poor heat dissipation performance, but also deforms greatly when heated, which affects the machining accuracy of the machine tool.

Images