Motorized spindle

Abstract

The invention provides a motorized spindle comprising a machine body assembly, a central spindle body, a motor, a pull rod, an elastic component, an ultrasonic vibrator and a power supply assembly. The central spindle body is connected into the machine body assembly in a penetrating mode and is matched with the machine body assembly in a pivoting mode. The motor is installed in the machine body assembly and is used for driving the central spindle body to rotate. The pull rod is connected into the central spindle body in a penetrating mode and can move in the axial direction of the central spindle body. The lower end of the pull rod is connected with a cutter. The elastic component is installed between the central spindle body and the pull rod and is used for jacking the pull rod upwards. The ultrasonic vibrator is fixed to the lower end of the central spindle body. A clamping portion which clamps the cutter when the pull rod tends to pull the cutter to move upwards is arranged in the ultrasonic vibrator. The power supply assembly is used for providing electricity for the ultrasonic vibrator. The central spindle body of the motorized spindle body can conduct axially high-frequency vibration during high-speed rotation, ultrasonic machining is conducted on the machined surface of a workpiece, cutting force is reduced, the defects of burning damage, deformation, residual stress and the like are effectively overcome, the service life of the cutter is prolonged, and hard brittle materials can be machined.

Description

technical field [0001] The invention relates to the technical field of machining, in particular to an electric spindle. Background technique [0002] Most of the current electric spindles are used for grinding, boring, drilling and other processing of metal workpieces. During processing, the shaft core of the electric spindle drives the cutter head of the tool to rotate at a high speed on the processing surface of the workpiece. The existing The cutter head of the tool driven by the electric spindle only rotates in a plane. When removing the allowance of the workpiece processing surface, the rotating cutter head is hindered by the allowance of the workpiece processing surface, so a large cutting force must be paid to overcome the machining surface allowance of the workpiece. At the same time, when the existing electric spindle is processing the workpiece, defects such as burns, deformation and residual stress will usually be formed on the processing surface of the workpiece....

AI Technical Summary

Problems solved by technology

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an electric spindle, which can not only drive the cutter head to rotate at high speed when processing workpieces, but also can vibrate the cutter head in the axial direction, thereby reducing the cutting force and effectively overcoming burns. , deformation, residual stress and other defects

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