机械5

摘要 在汽车零配件加工生产的过程中，如果使用人工上下料，则其不仅劳动强度大，而且效率低，工作环境也较差，有诸多不足。而使用自动上下料装置，则具有传送快速、定位精度高以及可以长时间连续作业，大大提高了生产效率。 本文拟设计一个适合于发动机配件生产线自动上料系统，该系统主要包括链传动系统和偏置曲柄滑块推杆机构两个部分。 在链传动系统中，选用合适的三相异步电机和与之匹配的减速器，再选择合适的间歇分割器，实现间歇传动，再通过一组链传动，从而实现预定减速。链传送带上的链条选择带翼的08B链条，翼上可以安装托盘，托盘上放置运输件，当链条转动时可以实现运输上料，链传送带上有张装置，可以保证从动链轮与主动轮在同一水平线上，且能保证链条的张紧。 在偏置曲柄滑块推杆结构中，在推杆位置末端放置接近开关传感器，当输送件到达指定位置时，接近开关感应输出信号给予步进电机信号，步进电机转动，带动设计的偏置曲柄滑块机构实现直线运动，完成推杆动作。设计的链传动与推杆形成配合完成自动上料系统。 关键词：发动机配件：自动上料：间歇：链传动；偏置曲柄滑块机构; I Abstract I
n the process of automotive parts productio
n，Ifyou use the ma
nual loadi
ng,the
n it is
not o
nly a Labor-i
nte
nsive,but also i
nefficie
ncies,a
nd theworki
ng e
nviro
nme
nt is poor, there are ma
ny deficie
ncies.However, the use of automatic loadi
ng a
nd u
nloadi
ng devices,with tra
nsfer speed, high precisio
n a
nd lo
ng-time co
nti
nuous operatio
n, greatly improvi
ng productio
n efficie
ncy. This paper i
nte
nds to desig
n a suitable e
ngi
ne parts productio
n li
ne automatic feedi
ng systems. The system co
nsists of two parts chai
n drive a
nd the putt of offset cra
nk slider mecha
nism. I
n the chai
n of tra
nsmissio
n system,, choice the appropriate of three-phase asy
nchro
nous motors a
nd matchi
ng reducer. The
n select the appropriate i
ntermitte
nt segme
ntatio
n to achieve i
ntermitte
nt drive, a
nd the
n achieve a predetermi
ned deceleratio
n through a set of chai
n drive. Chai
n li
nks o
n the co
nveyor beltwill select the chai
n li
nks ofwi
nged 08B, thewi
ng may be mou
nted the tray. The tray is placed o
n the tra
nsport pieces. Whe
n the chai
n rotati
ng, tra
nsporti
ng the material ca
n be achieved. There te
nsio
ni
ng device o
n the co
nveyor of chai
n ca
n e
nsure drive
n sprocket a
nd activewheel at the same level, a
nd ca
n e
nsure that the chai
n te
nsio
n. I
n the the putt of offset cra
nk slider mecha
nism,at the e
nd of the push rod positio
n, the se
nsor is placed close to the switch. Whe
n tra
nsporti
ng pieces arrived at the desig
nated locatio
n, proximity switch se
nsor output sig
nal that is give
n to the stepper motor, the stepper motor rotati
ng, a
nd offset slider-cra
nk mecha
nism drives by the desig
n of li
near motio
n. The
n pushi
ng rod actio
n is completed. The chai
n drive a
nd putti
ng of desig
ned formwith the completio
n of automatic feedi
ng systems. Keywords:E
ngi
ne parts: Automatic feedi
ng: I
ntermitte
nt: Chai
n drive; Bias slider-cra
nk mecha
nism;putter II 目录 目录III 1引言1 1.1自动送料机构的背景与发展前景1 2总体方案设计3 2.1课题设计方案对比3 2..1.1方案一3 2.1.2方案二4 2.1.3方案三5 2.2总方案结构设计思路6 3机械元件的选择与设计计算7 3.1链传动系统设计7 3.1.1链条的选择7 3.1.2链轮的设计与计算10 3.1.3链轮的连接与装配15 3.1.4轴的校核15 3.1.5链轮张紧装置的设计17 3.1.6链传送带框架设计17 3.1.7托盘设计18 3.1.8顶梁杆设计19 3.1.9调节杆设计19 3.1.10支撑钢板设计20 3.1.11臂板设计21 3.2推杆的设计与计算21 3.2.1推杆行程计算22 3.2.2曲柄连杆的设计22 3.2.3垫片设计23 3.2.4转盘以及固定钢板设计23 3.2.5直线轴承的设计选择24 3.2.6推杆末端组合件设计25 4电气元件的选择计算27 4.1用于链传动的电动机的计算与选择27 4.1.1链传动台的摩擦力的计算27 4.1.2扭矩、功率、减速比的计算以及电机的选择28 III 4.2推杆的电动机的计算与选择29 5总结31 谢辞32 参考文献34