铁柄连续模具设计

铁柄连续模具设计


铁柄连续模具设计

摘要:根据题目中已经明确告知工件材料为QSn4-4-2.5(锡青铜),分析产品的工艺性,说明模具设计过程,借助NX9.0,软件进行三维造型,肯定其摆列方法。通过此次对其铜片的设计,可以加强我对模具的了解和巩固之前学习的东西,为以后对这方面冲孔落料级进模具汲取经验。

本模具主要在结构设计时,为节约成本,节省材料,讲究经济因素,性价比,因此要求尽量简单,因为此零件加工就相对简单。还有在设计导柱,销钉端面时尽量将直角改为圆角。各块板在加工各个孔时采取电火花线切割。

此次模具设计用到之前俩年学到的冲压工艺与模具设计方面知识,这是对之前学习的总结与回顾。所给工件为薄的冲孔落料件,厚度为0.3mm较薄,所以选取的压力机也不需太大,工件长20.4mm,宽5.2mm不是太大设计时必须考虑剪切力以免冲出废料。在制造模具中需要碳素工具钢T8A,T10A,低合金工具钢CrWMn,9Mn2V等材料。

关键词:压板;螺栓;压力机;碳素工具钢T8A,T10A;生产率高、生产成本低、操作简单、适合大批量生产;低合金工具钢CrWMn,9Mn2V。

Design of continuous die for iron handle

Abstract:In twenty-first Century, advanced stamping technology absorbs the outstanding achievements in mechanical, electronic, information, materials , clean production. In recent years, analysis, reasoning, decision-making and control functions has become an important part of modern manufacturing technology, which plays an important role in the development of national economy. Generally speaking, the die is made up of a fixed part and a movable part. The fixed part is fastened on the working table of the press by the press plate and bolt, and the active part is fixed on the slide block of the press. Usually the fastening part is the lower die, and the movable part is the upper die. The upper die moves upward and downward with the slide block, thereby punching.

Any die is made up of various parts, and can be made up of dozens or even hundreds of parts. However, no matter how complicated they are, the parts on the die can be divided into five types according to their functions: working parts, positioning parts, pressure material, unloading and ejecting parts, guiding parts, fixing and fastening parts.

Many materials need to be made in making moulds, such as carbon tool steel T8A, T10A, low alloy tool steel CrWMn, 9Mn2V, etc. Stamping is a kind of widely used and long history product manufacturing process. It is a modern industrial equipment that is not used for automobile, aircraft, agricultural machinery, locomotive, and electronics. In recent years, with the basic manufacturing methods of new products, the development of materials and the emergence of new stamping technology, it has become an important technological frontier in advanced manufacturing field (net manufacturing).

The shape, size, relative position and properties of non-metallic materials are made into qualified parts.

Die design is the foundation of mould manufacturing, and reasonable and correct design is the guarantee of mould making correctly. The development of mould manufacturing technology is of great significance to improve the quality of mould, service life, precision, and shorten the period of manufacturing die. The quality, service life, making precision and qualified rate of die are greatly dependent on the mold quality. The material and heat treatment T art of mould making: the mold is not directly related to the cost of creating parts and the economic benefit of the manufacturing enterprise: the precision of the working parts of the mold determines the precision of the parts: the life meaning of the mold is related to the material and heat treatment of the mould and county, the structure of the looser and the T made of the material, and so on: the installation of the mould To make Sichuan directly related to the performance and safety of the model, the standardization of the design and manufacture of the mold is the foundation for the design and manufacture of the mold. The level of the standardization of the mold is very heavy, and the degree of the standardization of the mould is the industrial development of the mould.Pressure is to use building tools to press the village material on the press to separate or deform. A m working method for obtaining a certain shape of a workpiece. Because stamping is often carried out under the condition of cold material, it is also called cold stamping. Commonly used materials for stamping are sheet metal, so it is also known as stamping parts stamping process. A special kind of process equipment, called stamping, is made of metal or non-metal materials into parts (or semi-finished products) for stamping dies (commonly known as stamping dies). The shuttles are essential equipment for the stamping process. Without advanced die technology, the advanced stamping technology can not realize the shape of the classification parts, the small size, the precision, the batch, the raw material and so on, and the stamping methods are varied. But in general, is a material phase r which is originally a whole, and the forming process refers to the working procedure of producing a certain shape and size of the bad material under the condition that the plastic deformation is produced without damage.

Keywords:Pressure plate; bolt; press; carbon tool steel T8A, T10A; high productivity, low production cost, simple operation, suitable for mass production; low alloy tool steel CrWMn, 9Mn2V.

目 录

第一章 序言 1

1.1课题研究的目的和意义 1

1.2国内外研究概况 2

1.3课题研究的主要内容 5

第二章 工艺分析 6

2.1冲裁工艺分析 6

2.2加工方案确定 6

第三章 工艺计算 7

3.1排样设计 7

3.2搭边值计算 8

3.3送料进距计算 9

3.4压力中心计算 9

3.5凸模,凹模的结构设计 10

3.6冲裁模工作部分尺寸计算 16

第四章 总装备图 17

第五章压力机的确定与核......................................................................................................19

5.1压力机的确定与选用........................................................................................................19

5.2压力机的校核....................................................................................................................19

第六章小结..............................................................................................................................20

第七章致谢..............................................................................................................................20

第八章参考文献......................................................................................................................20

第一章 序言

1.1课题研究的目的和意义

铁柄是具有很好的机械密封性,所以它常用于机械器材中间的密封,除了密封性之外,还有防止两个物体之间受到压力、腐蚀、和管路自然地热胀冷缩泄漏一些性能。但是机械加工表面还有很多不完美之处,但是铁柄但是可以弥补不规则性。 如何正确选用铁柄,对于保证设备无泄漏来说很关键。选择铁柄时要根据介质的物性、压力、温度和设备大小、操作条件、连续运转周期长短等一些情况来合理地选择铁柄,充分发挥各种铁柄的特点。 在使用铁柄的时候,要注意铁柄的压力和温度,因为它们都是相互制约的,随着温度的升高。

在这个团队课题中,我主要负责铁柄连续模具设计。如果铁柄模具设计不好,会造成经常更铁柄模具的后果,这就会造成企业生产的停顿。在之前的试制产品中,铁柄凸模因结构设计不合理,在多次使用之后,已经造成铁柄凸模局部开裂的现象。对此,我将从原理设计和结构设计两方面对铁柄凸模进行分析,并提出改进方案。

在完成此课题的过程中,不仅要求我们熟悉掌握大学期间所学习的《机械制图》、《工程力学》、《机械设计基础》、《模具CAD/CAM》等课程,我们还应该学习一些课外的专业知识和专业技能,学会查阅相关的资料,除此之外,我们还需要向企业的工程师学习请教,在他们的指导下更好的完成这个课题。

1.2国内外研究概况

工业,农业,服务业是我国的三大重要产业。在二十一世纪的发展情况下,服务业不断发展,但国家的支撑柱依旧是工业,作为“工业之母”----模具,依旧对一个国家的发展影响很大。在我国模具行业在二十世纪80,90年代 迅起很快,各个地方的模具厂大大小小遍地开花。从事模具行业的人也是川流不息。我国的经济发展也是以很快放式进步,因此得到提高。但是我国在模具行业从事高端技术人才任然是一个空缺。与西方国家比拟任然存在很大不足。相比落后。重点还是在大型精密型模具制造,模具本身而言对于精度就有很高要求,尺寸公差越小越精密。当然这只是一方面,制造一副完美的模具要考虑的因素有很多,比如材料的选择,所选用的材料经济型,是否相对便宜,廉价,节约成本。还有所计算出来冲裁力,压力中心是否合格。冲压设备型号的选用因为太大不行太小也不行。

如今多采用新型设备,新型材料,材料的工艺处理有很大讲究,比如有锻火,回火,淬火,低温回火,高温回火等等。所以说从做一副模具开始需要做的工序很多。还有一点就是以前的传统制造方法已经不太适用当下的模具行业制造。

模具行业虽说不像以前发展迅速,但在现在国际情况下竞争激烈程度任然不减,一个国家的发展如何就可以从模具行业看出。因为模具运用比较广泛涉及到小有易拉罐,大有飞机导弹。生活方面影响也很大有汽车手机的制造,所以说当下的我们面临很大困难。需要一批新型高端人才带领国家走出发展困境。引领科技发展。

作为新一代的模具行业接班人不仅需要掌握以前的模具制造方法,还得不断创新知道一些新的制造方法,根据前人所总结的方法和经验加以扩充,还得学会借鉴西方一些工业比较发达的国家制造方法,中西合用。

最近几年以来。我国模具行业有了很大进步与提高,模具相关产业链如春笋般蓬勃发展,中国对模具的制造水平有了较大提高。中国在高精度、巨型、卓效、复杂、低成本和长寿命模具研发与制造技术上又在国际上取得了不少荣誉。按照我国模具工业协会的分门归类,我国可以生产制造研发的模具基本上可以分为10大种类。此中,冷作压力模具类和热塑成型模具,这两个类占模具产能的百分之六十左右。最近几年,国外几大汽车生产制造商因为建造了国际上先进的模具加工厂,工厂内全部选用精良的设备、优秀的制造技术和完美的设计,从而实现了由计算机辅助设计-辅助建设-辅助实验的加工生产一体化,进而有效的加快了生产效率,加快了冷冲压类模具的设计研发和生产制造,降低了冷冲压模具的生产周期。最近几年,生产规模不断扩大,并且,积极的响应国家的政策和开拓国内外模具产品的市场。

虽然,我国近几年的模具行业发展迅速,但是我国模具制造水平与国际上的工业发达国家还是有不小的差距,我国的模具的计算机辅助技术的研发运用水平,相对比欧美国家落后。中国的模具设计采用计算机制图的普及率较低,计算机制图的应用的行业不够广泛全面,我国大概仅有约百分之六十左右的模具在设计过程中采用了计算机制图技术,距离全部抛开画板,拿起鼠标,我国的模具行业还有很漫长的一段路要走。我国模具工业采用计算机辅助实验技术进行模具分析和计算,并对模具工艺方案进行分析和设计,技术还不是很成熟。我国模具工业采用计算机辅助制造技术制造模具,但是我国模具工业缺乏先进实用的加工设备,而且只有单调的模具制造设备,所以我国整个模具行业只有仅仅大约百分之五左右的模具制造设备被投入在这一项工作当中。并且,中国模具行业加工设备的精密度普遍较低,并且数量在整个行业的加工设备数量之中占的比重也比较少,因为模具设备加工精度较低,模具工艺还比较落后,最后,它直接对提高中国的模具质量水平起到了一定的作用。

第八章参考文献

①陈炜,冲压工艺与模具设计(M).北京:科学出版社,2015.

②徐永里,雷日扬,《模具材料及热处理》(M)机械工业出版社,2005.

③王芳,冷冲模设计与指导(M)北京:机械工业出版社,1998.

④吴爽,李剑主编,《公差配合与技术测量》(M) 同济大学出版社,2015.

⑤王秀凤 ,模具制造工艺学,(M)北京:航空航天大学出版社,2005.


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