打印机壳体的注塑模具设计与数控编程

论文编号:JX824  论文字数:29580.页数:48   附任务书，开题报告，文献综述，外文翻译，CAD图，MC9源程序

摘要
 塑料制品已在工业，农业，国防和日常生活中的方面得到广泛应用。特别是在电子业中则为突出。电子产品的外壳大部分是塑料制品，产品性能的提高要求高质量的塑料模具和塑料性能和成型工艺和制品的设计。
    塑料制品的成型方法很多。主要用于注射，挤出，压制，压铸和气压成型等。而注塑模，挤出约占成型总数的60%以上。注射成型分为加料，熔融塑料，注射制件冷却和制件脱模等五个步骤。当然如利用电气控制，可实现半自动化或自动化作业。
    注射模主要用于热塑料制品的成型，已成功的用于成型热固塑性塑料制品，它是塑料制品生产中十分重要的工艺装置。注射模的基本组成是：定模机构，动模机构，浇注系统，导向装置，顶出机构，芯机构，冷却和加热装置。
 数控编程技术是数控加工技术应用中关键环节之一,也是目前CAD/ CAPP/ CAM 系统中最能明显发挥效益的环节之一,它在实现设计加工自动化、提高加工精度和加工质量、缩短产品研制周期等方面发挥重要作用。迫于实际生产的强烈需要,国内外对数控编程技术进行了广泛的研究并取得了丰硕的成果并在机械制造工业、航空工业、汽车工业等领域有着广泛的应用。
 
关键词： 注射模   数控编程  模具设计　打印机

 The Injection Mold Design of a Shell printers and NC Programming

Abstract
 Plastic products in industry, agriculture, national defense and daily life in the area are widely used. Especially in the electronics industry was highlighted.
the customer of Electronic products most are plastic products, The improvement of product performance requirements of high-quality plastic molds and plastic properties. Process and product design.
There are many ways of molding for Plastic Products. Its is mainly used for injection, extrusion, suppression, die-casting and forming pressure and pressure forming, and so on. The injection mold, out of about forming more than 60 percent of the total. Feeding into injection molding, plastic melting, cooling and injection parts and other parts Stripping five steps. Of course, such as the use of electrical control. Can achieve semi-automatic or automatic operation.
   Injection Mould mainly used for the molding of plastic products, has been successfully used in the thermal-plastic molding plastic products, plastic products it is very important in the production of the device. Injection Mould is the basic component: the model agencies, dynamic simulation, pouring system, oriented devices, a top body, core, cooling and heating device.
   NC programming technology is the application of technology in one of the key links, Is the current CAD / CAPP / CAM system can best play a significant part of one of the benefits, In achieving its design and processing automation, greater precision machining and processing quality, shorten product development cycle, and played an important role. Because of the strong need for actual production, the NC programming technology at home and abroad to conduct extensive research and has achieved fruitful results and in the machinery manufacturing industry, aviation industry, automobile industry and other fields have a wide range of applications.

Key words：Plastic injection molds design ; NC Programming；Model desight; Shell printers
目  录
摘  要 Ⅰ
Abstract Ⅱ
目  录 Ⅲ
第一章  绪论 1
1.1  引言 1
1.2  模具CAD/CAM简介 5
1.3  基于MASTERCAM软件CAD／CAM功能的应用研究 8
1.4  小结 9
第二章  产品工艺性分析及成型工艺 11
2.1  产品的工艺性分析 11
2.2  产品塑料成型工艺 12
第三章  注塑模具的结构及分型面选择 17
3.1  模具总体结构设计 17
3.2  注射成型模具分型面的选择 19
3.3  注射机的选择 20
第四章  浇注系统设计 23
4.1  浇注系统的组成 23
4.2  浇注系统的设计 23
第五章  成型零件的结构设计 30
5.1  成型零件工作尺寸的计算 30
5.2  成型零件的强度与刚度的计算 32
第六章  导向机构的设计原则 34
 6.1   导柱的形式 34
 6.2   导套机构和精度要求 35
 6.3   导柱、导套在模板上的布置 35
第七章  推出机构及冷却系统的设计 37
7.1  推出机构的设计原则 38
7.2  推杆推出机构的确定 38
7.3  冷却系统的设计 38
7.3.1  冷却系统设计的基本原则 38
第八章  数控编程 41
8.1 MASTERCAM简介 41
8.2  刀具的选择原则 41
8.3  切削深度和宽度的确定 42
8.4  切削速度和主轴转速的确定 42
8.5  进给速度的确定 43
8.6  刀具路径的规划 44
第九章  总结 48
参考文献 49
致  谢 50

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