Welding Fixture and Checking Gauge Design for Clutch Pedal 检查离合器踏板焊接夹具和量具的设计.doc
《Welding Fixture and Checking Gauge Design for Clutch Pedal 检查离合器踏板焊接夹具和量具的设计.doc》由会员分享,可在线阅读,更多相关《Welding Fixture and Checking Gauge Design for Clutch Pedal 检查离合器踏板焊接夹具和量具的设计.doc(85页珍藏版)》请在三一文库上搜索。
1、 Welding Fixture and Checking Gauge Design for Clutch Pedal AssemblyCHAPTER 1: INTRODUCTION1.1 IntroductionThe first manufactured products were made one at a time. Early artisans started with little more than raw materials and a rough idea of the finished product. They produced each product piece by
2、 piece, making each part individually and fitting the parts into the finished product. This process took time. Moreover, the quality and consistency of products varied from one artisan to the next. As they worked, early manufacturing pioneers realized the need for better methods and developed new id
3、eas. Eventually, they found the secret of mass production: standardized parts. Standard parts not only speeded production, they also ensured the interchangeability of parts. The idea may be obvious today, but in its time, it was revolutionary. These standard parts were the key to enabling less-skill
4、ed workers to replicate the skill of the craftsman on a repetitive basis. The original method of achieving consistent part configuration was the template. Templates for layout, sawing, and filing permitted each worker to make parts to a standard design. While early templates were crude, they at leas
5、t gave skilled workers a standard form to follow for the part. Building on the template idea, workers constructed other guides and work holders to make their jobs easier and the results more predictable. These guides and work holders were the ancestors of todays jigs and fixtures. Yesterdays work ho
6、lders had the same two basic functions as todays securely holding and accurately locating a work piece. Early jigs and fixtures may have lacked modern refinements, but they followed many of the same principles as todays work holder designs.The project is to design a fixture for Clutch pedal. The par
7、t is machined in two more industries increasing the cost and machining time of the part. To eliminate outsourcing of the part the company has designed a fixture. The project is to design a fixture which will perform the remaining operation.Fixture is designed to hold the object during its operation
8、to avoid any errors in the dimension and for mass production. In any industry the accuracy is much important. Any error in the product may be harmful or dissatisfactory to the customer. In order to avoid this checking fixture is essential. Checking fixture checks whetherthe product is dimensionally
9、correct or not. If there is any error in the structure or dimension the product gets rejected.Welding fixtures are normally designed to hold and support the various components (workpieces) to be welded. It is necessary to support them in a proper location which is capable of preventing distortions i
10、n workpieces during welding. For this the locating elements need to be placed carefully, clamping has to be light but firm, placement of clamping elements has to be clear of the welding area and the fixture has to be quite stable and rigid to withstand the welding stresses. There is no limit of desi
11、gning a welding fixture. Its design depends on and driven by the hard facts that are what you want, and how to overcome the problems appearing with the current fixture. Keeping the defect free fast production rate as major target. The famous saying “Necessity is the mother of invention” hold perfect
12、ly true in case of welding fixture design.1.2 Project DirectivesObjectives: The main purpose of our project is to design a welding fixture and checking gauge to manufacture Clutch Pedal for Mahindra & Mahindra M-star tractor as per requirements of inspection and testing department. This is done to p
13、rovide fast mechanism to manufacture Clutch pedal as per requirement of client and also at minimum cost.Scope of work: Design is the major and important factor in determining efficiency and work ability of the machine. Working capacity, precision, rate of production etc. are the factors affecting th
14、e basic designing of Clutch pedal. This project is an endeavor towards sophisticating ways of designing the given component to increase the accuracy and production rate of the work. This project will give us the exposure to different technical ideas regarding operation, design software and difficult
15、ies while operating them.Constraints: The main constraints are Critical Characteristics and Significant Characteristics which are mentioned in 2D Product Drawings, Any failure in archiving Significant Characteristics may led to fouling or the part may not fit properly in vehicle and any failure in a
16、rchiving in Critical Characteristics may led even led to accidents. So Design Constraints must be archived within tolerance limit. This is mainly manufacturing based project hence the main constraints is to achieve this at minimum cost and with required flexibility by using existing equipment availa
17、ble in the workshop.CHAPTER 2: LITRATURE SURVEY2.1 WeldingThe term welding refers to the process of metallurgical joining of two similar or dissimilar metals by heating them to their melting temperature and causing the molten metal to flow together with or without application of pressure, with or wi
18、thout use of filler material.Welding is widely used by metalworkers in the fabrication, maintenance, and repair of parts and structures. While there are many methods for joining metals, welding is one of the most convenient and rapid methods available. Welding is not new. The earliest known form of
19、welding, called forge welding, dates back to the year 2000 B.C. Forge welding is a primitive process of joining metals by heating and hammering until the metals are fused (mixed) together. Although forge welding still exists, it is mainly limited to the blacksmith trade. Today, there are many weldin
20、g processes available. The primary differences between the various welding processes are the methods by which heat is generated to melt the metal. The most common types of welding are oxy-fuel gas welding (OFW), arc welding (AW), and resistance welding (RW).Fig. 2.1.1: MIG Welding2.2 Welding Process
21、 Involved Fig. 2.2.1: Typical Arrangement of MIG Welding Process Company uses MIG (Metal Inert gas welding) welding process This process is also popularly known as CO2 Welding process because shielding inert gas used contains 80% Argon & 20% CO2, Also called as GMAW (Gas Metal Arc welding). Metal el
22、ectrode used is consumable and made of Copper Material It is a Fusion Welding process 2-4 mm of gap is maintained between workpiece and electrode No special flux material is required Direct Current Reverse Polarity (DCRP) connection is used (negative terminal connected to work and positive terminal
23、connected to electrode) Fig. 2.2.2: MIG Welding Machine2.3 Welding ParameterTable 2.3.1: Welding ParametersSr. No.ParameterValue1Voltage25 35 V2Current140 150 Amp3Gas Flow10 12 dm3/min4Wire Speed12 17 m/min5Wire Diameter0.8 mm2.4 FixtureA fixture is a work holding or support device used in the manuf
24、acturing industry. What makes a fixture unique is that each one is built to fit a particular part or shape. The main purpose of a fixture is to locate and in some cases hold a work piece during either a machining operation or some other industrial process. A jig differs from a fixture in that it gui
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- Welding Fixture and Checking Gauge Design for Clutch Pedal 检查离合器踏板焊接夹具和量具的设计 检查 离合器 踏板 焊接 夹具 量具 设计
链接地址:https://www.31doc.com/p-2241717.html