普通车床主传动系统设计说明书毕业设计（论文)word格式.doc

First compliance review of the application of the appraisal Committee, only through the compliance review of the application to take part in a detailed review. 8.1 application compliance review: does not meet one of the following conditions, procuratorial Agency to submit application through compliance reviews, be invalidated: (1) application of the formats, contents, meet the requirements of selected files, powers of Attorney, declarations by the legal representative and the tender agent application to meet the requirements; (2) licence and a bidding agent qualifications meet the requirements; (3) the similar project tendering agency agent number and provide proof of material compliance; (4) the tendering Agency intends to put into this project the number of professionals to meet the requirements; (5) are intended to the agent of the project as a project manager has similar projects the number of and references to meet the requirements; (6) no fraud case. 8.2 application review in detail the Evaluation Committee through compliance reviews will be selected for detailed review of the application. 8.2.1 tender agent institutions similar project tender performance requirements (16 points) tender agent institutions similar project tender performance 16 points, by two part composition (1) agent similar project of cumulative bid amount scored calculation rules for: Agent water project bid amount (on January 1, 2007 has has bid notice for associate) cumulative each reached 100 million Yuan have 2 points, water project cumulative bid amount scored up not over 6 points. In addition, completes a bid worth more than 500 million yuan in total 1 minute, but other items score accumulated winning amount up to a maximum of 6 points. (2) calculation rule for the number of agents similar projects: proxy bid amount (since January 1, 2007 winning notice shall prevail) bidding projects in more than 50 million Yuan by 2 points, but the Agency projects the number of scores up to 3 minutes. 8.2.2 to be agents of the construction project as a project manager in the same project performance (10 points) Project Manager agent performance scores including agents of the bidding agencies of similar projects, as well as in other similar project tendering agency service agent during performance. Total 10 Project Manager agent performance, made up of two parts (1) acting like the accumulated winning amount calculation rule: agents for water conservancy project bid amount (since January 1, 2007 winning notice for example) cumulative average reached 100 million Yuan 3 but scored no more than 5 minutes. (2) calculation rule for the number of agents similar projects: proxy bid amount (since January 1, 2007 winning notice for example) in the more than 50 million Yuan water conservancy project period of 3 minutes, but scores the number of agents similar projects up to a maximum of 5 points. Project Manager demonstrated to provincial-level and higher peoples Government or the development and Reform Commission published the winning bidder on the designated media publicity shall prevail. 8.2.3 staff requirement (25 points) 1, to the construction project serving personnel, 4 years experience in tendering agent, 2 points per person, 2 years experience in tendering agent .Pig is not a pig. With domestic international market and technology big environment of changes, as China traditional industry of pig production of job way and profit way are requirements related industry for resources integration, to quality security for premise, regulation based farming, and management cost and the production, and sales cost, go standardization, and scale, and intensive, and market road, fast upgrade whole industry chain of regulation capacity, market competition capacity and anti-risk capacity. First, industry analysis (a) the basic situation in China is a traditional hog production and consumption country, 2008 46.15 million tons of pork, pig stock 462.64 million head by the end pig slaughter 609.6 million. National pig industrys annual production value at around 650 billion yuan, nearly 50% per cent of annual output value of animal husbandry. Sichuan province in 2008 produced 6.52 million tons of pork, with 694,000 tons of Chengdu city, live pig sell 10.46 million, first 15 Vice-provincial cities in the country. The whole nation advantage regional planning (2008-2015) there are 437 counties (cities), 55, Sichuan, Chengdu has 7 (including in pengzhou). International pig industry mainly include the European Union, the United States, and Canada, and Brazil and other absolute scale of animal husbandry industry and technology developed countries. Market 1, the domestic market from Chinas meat consumption habits and economic analysis of the development situation, the emergence of new trends in the market of domestic pork and its products. Docking is a pig production and sales more closely. The Yangtze River Delta, Pearl River Delta and the Bohai rim economic developed area industrial structure adjustment gathered pace, two or three industries to the Central and Western bias. Second, the rigid domestic consumption growth. For a long period, pork is still the largest variety of meat consumption in China, the absolute consumption continues to grow. Especially in the vast rural market growth potential. Third, market for pork and higher product quality requirements. Pollution-free pork safety and health has shown a very good market prospects. Four is the market changing. Currently, cold meat, more and more varieties of meat and pork meat products, which accounted for a large proportion of pork consumption, stores, chain stores, supermarkets and other marketing methods is on the rise, and transport has been extended to more than 2000 km in RADIUS. Chengdu is an important River pig resource market, the citys commercial rate reaches above 60% of live pigs, pork and raw materials primary processing products in the domestic and international reputation is high. Western hog trading center in Chengdu and provides disease-free areas of construction in order to further accelerate the development of swine industry realizes space and conditions. 2, the international markets at present, annual volume of trade in live pigs in the world year around 18 million, about 6 million tons of pork trade. A large net exporter of pork is mainly the EU and North America,-importing countries mainly in Asia, Japan, and Korea, and Singapore, the Philippines, Hong Kong and other countries and regions, as well as Russia, about 3 million tonnes were imported. It is predicted that the world meat consumption increase of 80% in Asia in the future, our country has obvious geographical advantages, export potential. With the advancement of live pigs superiority industry belt construction, animal disease .机 床 主 传 动 设 计 说 明 书 普通车床主传动系统设计说明书一、 设计题目：设计一台普通车床的主传动系统，完成变速级数为8-12级。二、 设计目的： 1：通过设计实践，掌握机床主传动系统的设计方法。 2：培养综合运用机械制图、机械设计基础、及结构工艺等相关知识，进行工程设计的能力。3：培养使用手册、图册、有关资料及设计标准规范的能力。4：提高技术总结及编制技术文件的能力。5：是毕业设计教学环节实施的技术准备。三、设计内容与基本要求：设计内容：（一）运动设计（1）传动方案设计（集中传动，分离式传动） （2）转速调速范围 （3）公比：大公比，小公比和及混合公比 （4）确定结构网和结构式：（1）传动副：前多后少，前密后疏，（2）超速级解决方案：a:增加变速组，b:采用分枝传动和背轮机构 （5）绘制转速图：（1）降速：前缓后急（2）升速：前急后缓（6）三角带设计:确定变速组齿轮齿数 （7）绘出传动系统图（二）动力设计（1）传动件的计算转速：各轴，各齿轮 （2）传动轴轴径 （3）齿轮模数 （4）主轴设计：轴径（前径，后径），内孔直径，前端前伸量a(粗选：100-120)，支撑形式，计算合理支撑跨距L（三）结构设计 （四）校核一个齿轮（最小的），校核主轴（弯矩，扭矩）基本要求： 1：根据设计任务书要求，合理的确定尺寸、运动及动力等有关参数。2：正确利用结构式、转速图等设计工具，认真进行方案分析。3：正确的运用手册、标准，设计图样必须符合国家标准规定。说 明书力求用工程术语，文字通顺简练，字迹工整。4：完成主传动系统图1张和机床正反转控制电气原理图1张。四、设计参数：序号加工最大直径主轴转速系列（r/min）驱动电动机功率与同步转速1400mm1000,710,500,355,250,180,125,904.5kw,1500r/min2400mm1000,500,355,250,180,125,90,454kw,1500r/min3320mm2000,1420,1000,710,500,360,250,180,125,90,63,424kw,1500r/min4320mm2000,1000,710,500,360,250,180,125,90,63,45,223kw,1500r/min5320mm2000,1260,1000,800,630,500400,320,250,200,160,1004kw,1500r/min6320mm2000,1250,800,630,500,400,320,250,200,160,100,633kw,1500r/min(选择第二组参数作为设计数据)五、运动参数设计（1）传动方案设计（选择集中传动方案）（2）转速调速范围（3）选用混合公比（4）确定结构网和结构式： （5）绘制转速图： 如下图所示 （6）确定变速组齿轮齿数 1先计算第一扩大组的齿轮的齿数第一扩大组的降速比分别为：， 故齿数最小的齿轮在降速比为之中，查表取，则，则，2基本组的降速比分别是：，故齿数最小的齿轮在降速比为之中，查表有，则，3第二扩大组的降速比分别是，故齿数最少的齿轮在之中，查表有，则，（7）传动系统图如下：六、动力参数设计（1）传动件的计算转速 主轴的计算转速：，取主轴的计算转速为125r/min。各轴的计算转速如下：轴序号电23主计算转速（r/min）14401000500177125最小齿轮的计算转如下：轴序号及最小齿轮齿数1（22）2(22)3(20)主(50)计算转速（r/min）1000500180125(2)计算各传动轴的输出功率 (3)计算各传动轴的扭矩 （n.mm） （n.mm）（n.mm）（n.mm）七、轴径设计及键的选取轴一：，取带入公式： 有，,圆整取选花键：轴二：，取带入公式： 有，,圆整取 选花键：轴三：，取带入公式： 有，,圆整取选花键：主轴：选择主轴前端直径，后端直径取，则平均直径。对于普通车床，主轴内孔直径,故本例之中，主轴内孔直径取为支承形式选择两支撑，初取悬伸量，支撑跨距。 选择平键连接，八、带轮设计（1）确定计算功率: ,K为工作情况系数，可取工作8小时，取K=1.0 （2）选择三角带的型号: 由和查表选择B型带（3）取，则（4）核算胶带速度V （5）初定中心矩，圆整取458mm。（6）计算胶带的长度 取 （7）核算胶带的弯曲次数 （8）计算实际中心距，圆整取476（9）核算小带轮的包角 （10）确定胶带的根数Z， ，取三根带。（11）大带轮结构如下图所示： 九、计算齿轮模数 45号钢整体淬火， 按接触疲劳计算齿轮模数m,查表计算可得 1-2轴 取，由公式可得，m=2.5mm2-3轴 取，由公式可得，m=2.5mm3-主轴 取，由公式可得，m=3.0mm十、各级转速校核各级实际转速r/min44891251772503605001000各级标准转速r/min45901251802503555001000误差2.2%1.1%0%1.7%0%1.4%0%0%以上各级的转速误差全部满足十一、齿轮校核轴及齿数122133244233242222342362350320主轴50主轴80模数（mm）2.52.52.52.52.52.52.52.53333分度圆直径(mm)5582.511082.51055510515515060150240齿根圆直径(mm)48.7576.25103.7576.2598.7548.7598.75148.75142.552.5142.5232.5齿顶圆直径(mm)6087.511587.51106011016015666156246（1） 一轴到二轴的小齿轮从上表可知为齿数为22 查设计手册可得以下数据： 接触应力： ， 为传递的额定功率（KW）将以上数据代入公式可得弯曲应力： ， 将以上数据代入公式可得（2）二轴到三轴的小齿轮从上表可知为齿数为22 查设计手册可得以下数据： 接触应力： ， 为传递的额定功率（KW）将以上数据代入公式可得弯曲应力： ， 将以上数据代入公式可得（3）三轴到主轴的小齿轮从上表可知为齿数为20 查设计手册可得以下数据： 接触应力： ， 为传递的额定功率（KW）将以上数据代入公式可得弯曲应力： ， 将以上数据代入公式可得十二、主轴校核（a） 主轴的前端部挠度（b） 主轴在前轴承处的倾角（c） 在安装齿轮处的倾角E取为，由于小齿轮的传动力大，这里以小齿轮来进行计算将其分解为垂直分力和水平分力由公式可得主轴载荷图如下所示：由上图可知如下数据：a=364mm,b=161mm,l=525mm,c=87mm计算（在垂直平面）,，计算（在水平面）,，合成：十三、轴承的选取（1） 带轮：因于带轮不承受轴向力，故选用深沟球轴承，型号：210。（2） 一轴：一轴的前后端与箱体外壁配合，配合处传动轴的轴径是25mm，同时一轴也不会承受轴向力故也选用深沟球轴承，型号：205。（3） 二轴：二轴与一轴相似，但是由于工作过程之中传动可能右误差，二轴会承受轴向力，因此二轴与外壁配合处采用圆锥滚子轴承，型号：7206E。（4） 三轴：三轴与外壁配合处采用圆锥滚子轴承，型号：7207E。（5） 主轴：主轴是传动系统之中最为关键的部分，因此应该合理的选择轴承。从主轴末端到前端依次选择轴承为圆锥滚子轴承，型号：7214E;推力球轴承，型号：38215；圆柱滚子轴承，型号：3182113，其示意图如 十四、电气设计 （1） FU1，FU2，FU3，FU4，FU5为熔断器，起短路保护。（2） FR为热继电器。起过载保护。（3） KM1，KM2为主电机M的正转和反转的接触器。（4） SB为停止开关。（5） SB1为电机正转开关。（6） SB2为电机反转开关。（7） HL1，HL2分别为电机正转和反转的指示灯。（8） EL为照明灯。 参考书籍：【1】.金属切削机床课程设计指导书 哈尔滨工业大学出版社【2】.金属切削机床设计指导 上海交通大学出版社【3】.机床设计手册（两册共四本） 机械工业出版社【4】.机床设计图册 上海科学技术出版社 【5】.金属切削机床设计 上海科学技术出版社 【6】.机械课程设计 浙江大学出版社【7】.机械设计（第四版） 高等教育出版社【8】.机械制造装备 中国铁道出版社【9】.机械制图 高等教育出版社【10】.机床电力拖动与控制 西南交通大学出版社4.1 application of the Chinese language application for proxy bidding agency application system. 4.2 bidding agent applications should be submitted by the Agency included in the 5th chapter of the content, and than select file asked to provide appropriate documentation. 4.3 proxy application shall affix its official seal coding and page by page in the specified location. Agent a copy of the application shall have to number the pages and signed original copy (copy) (including supporting documents), and copy should be exactly the same. 4.4 application there shall be no loose pages. 4.5 agent application should be complete with indelible ink (powdered) prints, the agent shall not alter any page of the application. 4.6 bidding agencies offer should be based on the interim measures for the management of tendering agents service charges (meter prices 20021980) rules of the Nineth, tender agent service charges using the difference progressive billing rate. Charges in accordance with the tendering agents service charges and, in conjunction with the provisions of the specific circumstances of the project shall not be floating up and down-floating range must not exceed 20%, otherwise the application cannot pass compliance checks, be invalidated. Due to bidding agency selection and principal-agent contracts signed during charging base bid amount has not yet been produced, it can only be according to the rates of price, bid and the bid amount determines after the end, controlled response rates calculated shall pay tender fee (tender agency fee accounts for the actual bidding agent item for fares). Than the selected person tendering agents service charge control the upper and lower limits, Cap for the State Development Planning Commission of the interim measures for the management of tendering agents service charges (meter prices 20021980) of tendering agents service fees under 100%, the lower limit for the State Development Planning Commission of the interim measures for the management of tendering agents service charges (meter prices 20021980