机械制造技术基础课件-chapter4-section1.ppt
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1、Chapter 4 Machine Tools and Machining Operations for rotational partsAbstractMachinepartsarebasicallyseparatedintotwo:rotationalpartsandnon-rotationalparts.Thischapterwillfocusontherequiredmachinetools,cuttingtoolsandmachiningoperationsforrotationalparts.Thelathesandlathecuttingtools,includingmainme
2、chanismofCA6140andthestructureofturningtoolsareintroduced.Inthesametime,theworkprincipleofthemachiningmethodsofgrinding,somehole-producedmachinesandcuttingtools,arealsointroduced.machiningofrotationalparts(a)TrackMachining(b)formingmethodKeywordsNameofmachinetools:Lathe(车床),screwthreadmachine(螺纹机床),
3、Grindingmachine(磨床),boringmachine(镗床),drillingmachine(钻床),broachingmachine(拉床).Methodsofshapegeneration:Turning,Taperturning,boring(镗孔),drilling,coredrilling(扩孔),counterboring(锪孔),reaming(绞孔),grinding,Knurling(滚花),threadingLatheGrindingMachineDrillPress仪表车床工作实拍录像.flv纵切车床自动车床数控车床内外螺纹割槽钻孔搪孔攻丝切断.flv德玛吉
4、DMGCTXgamma2000TCGILDEMEISTER加工中心数控机床.flv津上精密数控磨床加工_halfok.flv双工作台龙门钻床.flv4.1 Lathes and lathe cutting tools 4.2 Grinding machines4.3 Hole making machine tool and cutting tool Index4.4 Process analysis of rotational parts4.1LatheandLatheCuttingTools4.1.1 turning operationLathe is mainly used to prod
5、uce parts in round shape. It removes material by rotating the workpiece against a single-point cutter, while the latter feeds linearly.Operations that can be performed on a lathe:a). Straight turning b). Taper turning c). Profiling d). Facinge). Turning and external grooving f). Face groovingg). For
6、m cutting h). Boring i). Drilling j). Cutting offk). Threading l). Knurling Lets take CA6140 lathe as the example. It is very typical among the common lathes.Typical machining by lathe Types of lathe:1.普通车床、落地车床;普通车床、落地车床;(Engine lathe/ ground lathe)2.立式车床;立式车床;(Vertical lathe)3.转塔(六角)车床;转塔(六角)车床;(T
7、urret lathe)4.多刀半自动车床;多刀半自动车床;(Semi-automatic lathe)5.仿形车床及仿形半自动车床;仿形车床及仿形半自动车床;(Profiling lathe)6.单轴自动车床;单轴自动车床;(single-axis automatic lathe)7.多轴自动车床及多轴半自动车床;多轴自动车床及多轴半自动车床;(Multi-axis automatic lathe)8.专门化车床。专门化车床。 (special-purpose lathe) CA6140CA6140型普通车床外形图型普通车床外形图(3)ThemainstructureofCA6140 Hea
8、dstockMain functions: Supporting,driving, stopping,changing direction,braking, and changing the speed of the principle axis,and transferring the motion from the principle axis to the feed system.Main mechanism and parts: the unload belt carrier,bi-directional multi-chip frictional clutch and speed c
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