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M10YW291GoodHard machining steelsFinishing and semifinishingM203 .Other cuttingtool materials(a) Ceramicsa) Aluminum oxidebase ceramicsb) Silicon nitridebase ceramics(b) Cubic boron nitride(c) Diamond Deformation during the cutting process Mechanics of Chip Formation1.Division of the deformation zones切削過(guò)程中,切削層金屬的變形大致可劃分為三個(gè)區(qū)域:(a)The first deformation zone (Primary shear zone)(b)The second deformation zone (Secondary shear zone)(c)The third deformation zone在第一變形區(qū)內(nèi),變形的主要特征就是沿滑移線的剪切變形,以及隨之產(chǎn)生的加工硬化。晶粒伸長(zhǎng)的方向與滑移方向(即剪切面方向)是不重合的,它們成一夾角。2.Forces of chips在直角自由切削的情況下。相對(duì)滑移為20分鐘教學(xué)內(nèi)容提要時(shí)間分配備注 (212) Calculation of Deformation coefficient Fig diagrammatic sketch of shear deformation3.Shear angle 在剪切面上金屬產(chǎn)生了滑移變形,最大剪應(yīng)力就在剪切面上。教學(xué)手段CAI(動(dòng)畫)、板書(即興講解)、投影儀結(jié)合參考資料機(jī)械制造技術(shù)基礎(chǔ) 于駿一、鄒青主編,機(jī)械工業(yè)出版社,2004年金屬切削原理 周澤華主編,上??茖W(xué)技術(shù)出版社,1998Manufacturing Engineering and Technology, SEROPE KALPAKJIAN, AddisonWesley Publishing Company,1995Metal Cutting and High Speed Machining,Dudzinski,D. Kluwer,2002年課后小結(jié)課后根據(jù)課堂教學(xué)效果總結(jié)7 / 7。故有