Two-dimensional piezoelectric vibration platform

Abstract

The invention discloses a two-dimension piezoelectric vibration platform which is characterized in that four piezoelectric stack actuators are symmetrically arranged on upper, lower, left and right sides, wherein the external sides of the piezoelectric stack actuators are fixed on a base plate through screws; hex screws are adopted as the screws; internal sides of the piezoelectric stack actuators are respectively connected with a disc which is located in a middle position through flexible hinges; at least three thread holes are arranged in the disc; four uniformly distributed thread holes are arranged in the disc in the embodiment; a mounting hole is arranged in the base plate; piezoelectric input and output ports are arranged on one side of the base plate and are respectively connected with the piezoelectric stack actuators through leads. The two-dimension piezoelectric vibration platform has the advantages of simple structure, low frequency, controllable vibration frequency, amplitude and waveform, and capability of realizing two-dimension vibration of a workpiece; the efficiency of the applied piezoelectric stack actuators is higher than the efficiency of a single chip; the two-dimension piezoelectric vibration platform has a simple structure, is easy to control and is convenient to produce, so that the two-dimension piezoelectric vibration platform is fit for popularization in the fields of vibration milling or other vibration screening, and the like.

Description

technical field [0001] The patent of the present invention relates to an ultrasonic vibration milling table. Background technique [0002] Compared with ordinary milling, vibration milling has the advantages of reduced cutting force, reduced cutting heat, improved workpiece surface quality, improved precision, easy chip handling, improved tool durability, stable processing, and high productivity. It solves the problem of difficult-to-machine materials and common Material processing issues. The way of vibration is an important part of vibration milling, and the different ways of vibration have a great impact on the machining process of workpieces. [0003] The ultrasonic vibration milling research carried out today is mostly one-dimensional structure. Generally, an ultrasonic generator is used as an excitation source to provide high-frequency, small-amplitude harmonic motion, which is then converted into mechanical energy by an ultrasonic transducer to cause a specific shape...

AI Technical Summary

Problems solved by technology

However, the vibration waveform cannot be controlled arbitrarily according to the needs, and this device must have a high bending rigidity to ensure that the tool can reciprocate in parallel, otherwise, the deviation of the tool from the ideal trajectory will deteriorate the processing quality and reduce the surface roughness

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