Ultrasonic vibration machining device and method for aluminum-based silicon carbide composite material

Abstract

The invention discloses an ultrasonic vibration machining device and method for an aluminum-based silicon carbide composite material. The ultrasonic vibration machining device comprises a computer, alaser auxiliary heating part, an ultrasonic vibration machining part, a machine tool workbench, a machine tool spindle and a micro-edge milling cutter, wherein the ultrasonic vibration machining partcomprises an ultrasonic generator, a transducer and an amplitude-change pole; the lower end of the machine tool spindle is connected with the transducer, the lower end of the transducer is connected with the amplitude-change pole, the upper end of the micro-edge milling cutter is clamped at the lower end of the amplitude-change pole, and the ultrasonic generator is connected with the transducer through a wire; a clamp holder is arranged on the machine tool workbench, a workpiece made of the aluminum-based silicon carbide composite material is clamped on the clamp holder, and the clamp holder is connected with a three-way dynamometer; and the laser auxiliary heating part is used for heating a to-be-machined part of the workpiece. In the milling operation process, chip removal can be accelerated, flutter of a cutter is eliminated, abrasive abrasion and adhesive abrasion are reduced, milling force and cutting heat are reduced, the machining size precision is guaranteed, the workpiece surface quality and the machining efficiency are improved, and the machining cost is saved.

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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