Composite activator used for vibration-cutting

Abstract

A combined vibration exciter for vibration cutting is composed of casing, frequency varying unit, motor, shaft coupling, drive shaft, bevel gear set, vertical shaft, crank-slide block unit, dual-eccentric unit, vibration isolating unit, spring, central shaft, flat key and flange shaft. It can transform a rotation movement to an adjustable vibration consisting of a torsional vibration and an axial vibration.

Description

Technical field [0001] The invention relates to a composite vibration excitation device in the field of vibration cutting. Through the corresponding mechanical transmission and conversion mechanism, this device can convert an input rotational motion into a composite vibration composed of a torsional vibration and an axial vibration, and can easily realize the separate control of torsional vibration and axial vibration . Background technique [0002] Since the founding of vibration cutting technology, many scholars at home and abroad have conducted in-depth research on it and obtained a large number of research results. The process effect, such as: reducing the cutting force, reducing the cutting temperature, improving the chip breaking and chip removal, significantly improving the processing quality and so on. Therefore, vibration cutting technology has broad application prospects in the processing of hard and brittle materials, difficult-to-machine materials such as stain...

AI Technical Summary

Problems solved by technology

Although superimposed torsional vibration can avoid impact and thus protect the tool, it also has its shortcomings: because the vibration amplitude at the chisel edge of the drill bit is zero, the adverse effect of the chisel edge is still very serious, and the axial force and exit burr cannot be significantly reduced

The device is simple in structure and easy to use, but this device needs to be greatly improved on the original machine tool, and it is not easy to realize the separate control of axial vibration and torsional vibration, so its popularization and application are greatly limited

[0005] The Central South Institute of Technology has developed a compound vibration device for lathes by using the eccentric wheel pendulum mechanism and the ball screw nut mechanism. Through this device, the axial vibration, torsional vibration and compound vibration drilling of the workpiece can be realized. , but the conversion of the vibration form of the device is troublesome, it is not easy to realize the individual control of parameters, and it cannot meet the requirements of most processing occasions such as drilling machines and tapping machines.

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