汽车主线夹具举升装置的设计

机械论文编号:JX040  论文字数:12754,页数:36

本份资料包括以下内容

目  录

第一章 前言 1
1.1 汽车设备行业概述 1
1.2 国内外发展现状 1
1.3 设计简介 2
1.4设计任务及进度要求 2
第二章 系 统 结 构 设 计 3
2.1系统结构分析 3
2.2举升系统的滑车[1] 3
2.3 举升系统 4
2.3.1 功能与工作原理[1~2] 4
2.3.2 轴1及连接轴[3~4] 4
2.4  轨道[1] 8
2.5导向 9
2.6定位 9
2.7升降架 10
第三章  气压系统[5~7][11] 11
3.1 气压传动 11
3.1.1工作原理和组成 11
3.1.2 气压传动的优点及缺点 11
3.1.3气动元件 12
3.1.4气动执行元件 12
3.1.5气压系统的组成回路 13
3.1.6 气缸的设计计算[5] 14
3.2螺纹联结[4] 16
3.2.1螺纹联接的预紧 17
3.2.2螺纹联接的防松 18
3.2.3压板与升降架之间螺纹联接的计算 19
第四章  齿轮齿条传动系统[8~10] 21
4.1齿轮机构的传动特点及要求 21
4.2齿轮齿条机构分析和类型 21
4.2.1齿轮齿条材料的选择 21
4.2.2齿轮齿条机构的组成及设计计算[8][10] 22
结论 29
谢  辞 30
参考文献 31

摘  要

举升装置的首要任务是在工件焊接完毕后将焊接后的工件托起，使其离开夹具，以便将工件移走。它是配合线上夹具来工作的，用于支撑线上各工位的轨道及轨道上的工件等设备，要求在限定的空间内完成举起和降下的动作。汽车主线夹具举升装置是由气压系统，齿轮齿条传动系统，升降架，轨道，BASE板等几部分组成的。
设计中的举升装置需要举升的重量大约是762.2kg，要求可以举升的范围是0~400mm。根据车体的需要，铺设了两条相距400mm的固定轨道，承载的设备可以在轨道上来回滑动。设计过程中要注意保证举升平台的平衡和平稳，为了满足这个需要，我们采用了齿轮齿条传动，齿条采用了导向齿条轴的结构。这样不仅使动作协调一致，还能充分保证举升的平稳性和可靠性。
气压系统是整个系统的动作能源。为了保证车体的顺利举升，根据所举升的重量，通过计算，选择气缸的缸径和行程。
目前，该设备正在不断完善、改善中，使其性能更优越，以达到国内领先水平，国外先进水平，逐步占领国内市场，最终打入国外市场。
关键词：举升装置 气压系统 齿轮齿条传动系统

ABSTRACT

The all-important task of the lift equipment is that it is to stipule the jointed work pieces after they have been jointed. It makes the work pieces leave the jig and convenient to move away from jigs. It works to work in the jigs of product line. It is used to underlay the orbits, work pieces on orbits and other equipment of every work position. It requests the equipment to completes the action of lifting and descending. This lift equipment is composed of air pressure system, gear and rack drive system, lift shelf, orbits, BASE board and other parts.
  In this design, the lift equipment need to lift about 762.2kg’s weight and the range it need to lift is 0~400mm. It has two orbits, which are away from 400mm, which based on the need of the bodywork’s shape and size. Besides, the bodywork can slippage on the orbits to and fro on the pulley. Between the process of design, we should assure that the lift flat roof is balanceable and smooth. For shake of meeting this need, we adopt gear and rack drive system, and the rake is the machinery of oriented axes. In this way, the lift equipment’s action is accordant, and it can assure the placidity and reliability of lifting.
 air pressure system is the action energy sources of the whole system. For the shake of assuring the lift of the work body favoring, we need choose the diameter and journey of the air pressure crocks basing the lift weight and the result of calculation.
At the present time, this equipment is being perfected and improved which make the capability more predominant. Doing these is for achieving one-up level in home and advanced level in foreign countries, and occupy domestic market gradually. In the end, it can come into the foreign markets.
Key words: lift equipment, air pressure system, gear and rack drive system