小批量无油轴承的弯曲成形夹具_毕业设计 2014年.docVIP

电气化铁道技术（司乘）专业2014届毕业生 毕 业 设 计 课 题 小批量无油轴承的弯曲成形夹具 Abstract Mold is a very important equipment n industrial production, and mold industry is one of the major bases of the national ecomical departments. With the development of machinery industry, electronics industry, aviation industry, daily necessities industry, instrument and meter industry, quanlity requirements of bending system become more and more which demands the higher level of developing, designing and manufacturing bending mold. Therefore, the level of mold disigning, the strength of mold manufacturing and the quality of mold directly affect products quality, economys increasing and industry levels improving. Mold industry named the mother of industry in international market, as the basic insdustry, plays an undoubtly important in the development of other industries and nationla economy. Mold industry blooms in recent decade. Renewing products cant leave mold. Only improving the understanding of mold industry, can alleterate renewing our industrial products, can provide the sustainable development of ecenomy necessary equipments, can strength our industrial products in international market. Mold industry now is struggling in the fiece competition for high grade and high level. They competete on the pioits of quality and manufacturing time with the price secondary. This artical is mainly about the design of bent fixture and oil-less bearing bending.KEY WORDS: stamping; bending; mold  目 录 第一章　绪 论 - 1 - 1.1弯曲工艺的概念 - 1 - 1.2弯曲的基本原理 - 1 - 1.3弯曲成形的主要方法 - 2 - 第二章 零件的工艺性分析 - 3 - 2.1弯曲精度 - 3 - 2.2最小弯曲半径 - 4 - 2．2 最小相对弯曲半径的确定 - 6 - 第三章 工艺方案的确定 - 6 - 3.1工艺分析 - 6 - 3.2工艺方案 - 7 - 第四章 工艺计算 - 7 - 4.1 弯曲件的毛胚展开尺寸计算 - 7 - 4.1.1中性层的确定 - 7 - 4.1.2工件尺寸 - 8 - 4.2弯曲力的计算 - 9 - 4.3冲压力 - 10 - 4.4 弯曲凸凹模间隙C - 10 - 4.5 弯曲件的回弹 - 10 - 4.5.1影响回弹的主要因素 - 10 - 4.5.2解决回弹 - 11 - 第五章 模具的整体设计 - 12 - 5.1预弯橡胶冲压模 - 12 - 5.1.1橡胶冲压模的原理优势 - 12 - 5.1.2橡胶模的整体设计图 - 12 - 5.2 弯曲成