A variable-angle two-dimensional ultrasonic vibration assisted machining platform based on flexible hinges

Abstract

The invention discloses a flexible hinge based variable-angle two-dimensional ultrasonic vibration auxiliary processing platform. The flexible hinge based variable-angle two-dimensional ultrasonic vibration auxiliary processing platform comprises a bottom plate and a vibrating block, wherein the bottom plate is matched with a seat ring of a thrust bearing through a ring-shaped table arranged on the upper surface of the bottom plate; the vibrating block is matched with a shaft ring of the thrust bearing through a circular lug boss arranged on the lower surface of the vibrating block; a plurality of flange bases are arranged in the peripheral direction of the upper surface of the bottom plate; a first ultrasonic vibrator and a second ultrasonic vibrator are separately mounted on two flange bases; an amplitude-change pole on the first ultrasonic vibrator and an amplitude-change pole on the second ultrasonic vibrator separately cling to the vibrating block tightly; a mounting base is arranged on the upper surface of the base; a first flexible hinge is mounted in a U-shaped slot of the mounting base; and the first flexible hinge tightly fits to the vibrating block. The first ultrasonicvibrator and the second ultrasonic vibrator realize two-dimensional ultrasonic vibration processing of a workpiece, so that modifying on a main shaft is avoided. The thrust bearing is mounted betweenthe bottom plate and the vibrating block, so that support, in the Z direction, of the vibrating block is realized, and vibration, in an XY plane, of the vibrating block is not affected.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic processing, and in particular relates to a variable-angle two-dimensional ultrasonic vibration auxiliary processing platform based on a flexible hinge. Background technique [0002] Since the 1950s, ultrasonic vibration-assisted machining has been gradually applied in the industrial field, and has attracted great attention and interest from many scholars. Ultrasonic-assisted machining technology has developed rapidly. In recent years, it can be seen that ultrasonic-assisted processing technology accounts for a large proportion in the processing technologies of brittle and hard materials represented by engineering ceramics and difficult-to-machine materials represented by titanium alloys. Compared with traditional machining, ultrasonic vibration assisted machining technology has been proved to have clear advantages in reducing cutting force, reducing cutting heat, improving machined surface qual...

AI Technical Summary

Problems solved by technology

Limited to ultrasonic vibration-assisted milling, most of the processing is realized by modifying the spindle, which is expensive and difficult to modify. At the same time, the ultrasonic vibration method of the modified spindle can only drive smaller tools or grinding heads, which is very difficult in actual processing. It is difficult to meet the processing requirements, so it is a feasible idea from the perspective of workpiece vibration

On the other hand, the study of one-dimensional ultrasonic vibration has made great progress, and two-dimensional and even three-dimensional ultrasonic vibration has become a research hotspot. If the two-dimensional vibration is realized by transforming the main shaft, only longitudinal-bending compound vibration or longitudinal-torsional compound vibration can be used. , its design and development process is very complicated, and can only achieve two-dimensional vibration at a fixed angle

Images