An ultrasonic vibration processing device and method for aluminum-based silicon carbide composite materials

Abstract

An ultrasonic vibration processing device and method for aluminum-based silicon carbide composite materials, comprising a computer, a laser-assisted heating part, an ultrasonic vibration processing part, a machine tool table, a machine tool spindle and a micro-blade milling cutter; the ultrasonic vibration processing part includes an ultrasonic generator , transducer and horn; the lower end of the machine tool spindle is connected to the transducer, the lower end of the transducer is connected to the horn, the upper end of the micro-blade milling cutter is clamped at the lower end of the horn, and the ultrasonic generator is connected to the transducer through a wire ; A clamper is arranged on the machine table, the workpiece of aluminum-based silicon carbide composite material is clamped on the clamper, and the clamper is connected with a three-way dynamometer; the laser-assisted heating part heats the part to be processed of the workpiece. During the milling operation, the invention can speed up chip discharge, eliminate tool chatter, reduce abrasive wear and adhesive wear, reduce milling force and cutting heat, ensure machining dimensional accuracy, improve workpiece surface quality and machining efficiency, and save machining costs.

Description

technical field [0001] The invention belongs to the technical field of precision ultra-precision machining, and in particular relates to an ultrasonic vibration machining device and method for aluminum-based silicon carbide composite materials. Background technique [0002] Aluminum-based silicon carbide composite materials have the characteristics of high specific strength, low thermal expansion coefficient, and good thermal stability, and are widely used in national defense, aerospace, electronics, and chemical industries. The hard phase silicon carbide particles are distributed in the aluminum matrix. The particles enhance the physical and mechanical properties of the material and increase its cutting processing difficulty, so that surface defects such as protrusions, cracks, and pits often occur during processing; appear on the edge of the workpiece Edge damage such as burrs, edge chipping, chipping and peeling, ordinary milling tools are easily worn by silicon carbide p...

AI Technical Summary

Problems solved by technology

Ultrasonic vibration requires a small amplitude, which easily leads to low processing efficiency. For hard and brittle materials, the microscopic impact between the tool and the workpiece causes the tool to be chipped and damaged; laser heating can improve the plasticity of the material through laser heating, thereby increasing the material removal rate. Avoid cracks in the process of machining, reduce cutting force, and reduce tool wear, but it will lead to softening of the aluminum base, easy to produce built-up edge, and high temperature aluminum base softening will cover the surface of the material, affecting processing efficiency

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