文档介绍：摘要
超声加工技术是近30年来逐步发展的一种特种加工方法,并以它的工艺效果得到了广泛的应用。由于它横跨机械学、电学和声学三个学科,因而也可把超声加工技术视为边缘学科。
超声加工,是指给工具或工件沿一定方向施加超声振动进行振动加工的方法。超声加工系统,由超声波发生器、换能器、变幅杆、振动传递系统、工具、工艺装置等构成。超声波发生器的作用是,将220V或380V的交流电源转换成超声频电振荡信号;换能器的作用是,将超声频电振荡信号转换为超声频机械振动;变幅杆的作用是,将换能器的振动振幅进行放大。
近20多年来,国外采用烧结或镀金刚石的先进工具,既作超声波频振动,同时又绕本身轴线以1000—5000r/min的高速旋转的超声波旋转加工,比一般超声波加工具有更高的生产效率和孔加工的深度,同时直线性好、尺寸精度高、工具磨损小,除可加工硬脆材料外,还可加工碳化钢、二氧化钢、二氧化铁和硼环氧复合材料,以及不锈钢与钛合金叠层的材料等。目前,已用于航空、原子能工业,效果良好。
本文设计的超声波旋转加工机,包括整机的工具头、进给装置等机械结构设计和驱动元件的选择。
关键词: 超声波;结构设计;旋转加工;变幅杆;换能器
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ABSTRACT
The technology of ultrasonic process is a special method process in recent 30 years, and it has a wide application because of its good crafty result. Since the technology of ultrasonic process is relative with mechanism, electricity and acoustics, it can be considered as frontier science.
Ultrasonic process, it is a processing method which manufacture the work piece ultrasonic vibration at a direction. The system of ultrasonic process is consist of the manufacturing install of ultrasound, the ultrasonic transforming install, the pole of changed flap , the system of transmitting vibration, tools, and the system of craft, and so on. The function of the manufacturing install of ultrasound is to transform the 220 or 380 mains to the ultrasonic electric vibrating signal;the function of the ultrasonic transforming install is to transform the ultrasonic electric vibrating signal to the machining vibration;and the function of the pole of changed flap is to amplify the amplitude.
The Rotary Ultrasonic Machining that the text designed, which include tools, feeding device etc. selection of driver is either included.
Key words:Ultrasonic; Structure Design; Rotary Ultrasonic Machining
Amplitude Transformer;Transducer
目录
摘要 ……I
Abstract II
第1章绪论 1
课题背景 1
课题的意义 2
超声加工的工艺效果 3
切削力大幅度降低 3
切削温度大幅度降低 3
大幅度降低表面粗糙度,制和显著提高加工精度 4
大幅降低切削温度 4
提高了切屑液的使用效果 4
提高已加工表面的耐磨性、耐腐蚀性 5
大大节省能源,简化机床结构 5