PAGE\*MERGEFORMATIV辽宁科技大学本科生毕业设计第页镗铣床主传动系统设计摘要毕业设计是大学生学习专业知识之后进行的必要实践教学环节。其内容包括：根据机床型号、用途，确定出极限转速、公比、转速级数、各级转速及其他有关机床运动的参数；再根据公比、转速级数拟定结构式、结构网，然后画出转速图，确定齿轮齿数、传动结构并绘制出对应的传动系统图。此外，估算传动轴直径、估算齿轮模数，校核齿轮、轴与轴承的强度及寿命。毕业设计目的，是为了让我们对大学以来学到的所有理论知识得到巩固、充实。通过机床变速主传动系统的设计，使我对机床的工作原理、结构都有了深入了解，在选定电机、转速图和传动齿轮参数的过程中，加深了对机械设计、互换性、工艺学等课程的理解与运用。此外，通过这次毕业设计，拓宽了我的设计思路，提高了结构设计、方案选择分析、机械制图、运算、查阅技术资料等多方面的能力。关键词：镗铣床；主轴箱；传动系统；变速系统BoringandMillingMachineMainTransmissionSystemDesignAbstractThegraduationdesignisanimportantprocessforacollegestudentafterlearningsomeprofessionalknowledge.Itincludes:determiningthelimitspeed,commonratio,speedseries,speedandotherrelatedmachinetoolmovementparameteratalllevelsaccordingtothemachinetype,purpose;drawingthespeeddiagramanddeterminingthegearteeth,thetransmissionstructureandmappingoutthecorrespondingtransmissionsystemaccordingtocommonratio,speedseriesforstructured,networkstructure,andthen.Inaddition,estimatetheshaftdiameterandmoduleofgear,checkthegear,shaftandbearingstrengthandservicelife.Graduationdesignisaimtoenrichallofthetheoreticalknowledgewelearnatouruniversity.Wehaveadeepunderstandingoftheworkingprinciple,structureofncmachinetoolsthroughthemachinetoolmainvariablespeeddrivesystemdesign.wealsohaveadeepcomprehensiveunderstandingoftheknowledgeofinterchangeabilityandmechanicaldesign.Inaddition,throughthisgraduationdesign,mydesignideasarewidenedandmystructuredesignsareimproved.Italsoimprovemyselectionanalysis,mechanicaldrawing,operation,andtheabilitytoreferthetechnicalinformation.KeyWords:Boringandmillingmachine;Thespindlebox;Thetransmissionsystem;Variablespeedsystem目录TOC\o"1-3"\u1绪论PAGEREF_Toc1214711.1选题背景及目的TOC\*MERGEFORMAT…..........…………………....………....……………………………………PAGEREF_Toc719511.2国内外研究状况和相关领域已有成果PAGEREF_Toc1395211.2.1国外机床行业发展现状………………..…………………………………………….11.2.2国内机床行业发展现状……………..……………………………………………….21.3研究内容及主参数PAGEREF_Toc927432镗铣床变速操纵机构简介PAGEREF_Toc2447342.1镗铣床结构组成PAGEREF_Toc1441142.2