模具毕业设计111塑料斜齿轮旋转脱螺纹注塑模具设计

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毕业设计说明书

题目：塑料斜齿轮旋转

脱螺纹注塑模具设计

学院：国防生学院

专业：机械设计制造及其自动化

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指导教师单位：

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题目类型：☐理论研究☐实验研究☑工程设计☐工程技术研究☐软件开发

2014年5月4日

伴随着全球性经济发展，新技术革命浪潮不断的突破与发展，跨越性的技术发展已经成为推动世界经济增长的重要因素。市场经济的不断繁荣，极大地促进了对体积小，工业产品的品种多，低成本，高品质的方向发展。为了提高生产周期的市场竞争力的核心产品的要求越来越高，开发周期短，因此对各种产品的制造的关键技术及设备，模具的要求也越来越严格和苛刻的。

模具是基础工业之一。随着市场经济全球化趋势和各种高新技术的迅猛发展，快速经济模具被赋予了新的内涵和新的任务，种类的激增，促使快速经济制模材料向着多品种系列化迈进，不断促使工艺有新突破和发展。鉴于商品经济的快速发展，产品换代更新的加速，以及市场竞争愈发激烈，都愈发高的刺激着快速经济制模技术朝着短周期、低成本、高质量及高制造精度等方向发展。鉴于它能够使企业获得更大的市场，创造更大显著的经济效益，因此愈发受到企业家的垂青以及获得相关领导部门的政策资金的支持。鉴于快速发展的高新技术以及各种技术的综合运用，未来必定会产生新型节能省材的快速制模技术来适应社会生产中差异化需求。

此次毕业设计是对塑料斜齿轮注塑模具设计，难点在于实现自动旋转脱螺纹功能。本设计有两大亮点，一是使用齿轮齿条传动机构来实现测抽芯，二是用轴承使型腔旋转来实现脱螺纹设计。因模具中有多处需要配合，可能使模具在制造和装配方面有些难度。关键词：模具；斜齿轮；结构设计；注射模；型腔

With the global economic development, new technology revolution continued breakthroughs and development, leapfrog technology development has become an important factor in promoting world economic growth . Continued prosperity of the market economy , which greatly promoted to small, multi- variety of industrial products , low-cost , high-quality direction. In order to enhance the core products in the market competitiveness of the production cycle, and increasingly demanding shorter development cycle , and therefore the key to the manufacture of various products, technology and equipment - mold requirements are increasingly stringent and demanding .

Mold is one of the basic industries . With the rapid development of economic globalization and a variety of high-tech markets , rapid economic mold was given a new meaning and a new task , the type of surge , prompting rapid economic modeling material moving toward multi- variety series , continue to promote technology breakthroughs and development. Given the rapid development of the commodity economy , accelerate the upgrading products , and market more competitive , are increasingly high to stimulate rapid economic modeling techniques towards short-cycle , low-cost , high-quality and high manufacturing precision direction. Given its ability to enable enterprises to gain a larger market , creating greater significant economic benefits , and therefore increasingly favored by the entrepreneurs and access to funding to support policies related to the leadership department. Given the rapid development of high-tech and comprehensive use of various technologies , the future will certainly generate new energy-saving materials for rapid tooling technology to meet the social needs of the difference in production .

The graduation project is a plastic injection mold design helical gear , the difficulty lies off the automatic rotation of the threaded function. This design has two bright spots , one using rack and pinion mechanism to achieve measured Pulling , two bearings so that the cavity is rotated to achieve the de- thread design . Because there are many die with blood , may cause some difficulty in mold manufacturing and assembly areas .

Keyword: mold ; bevel wheel; structural design;plastics injection mold; cavity