毕业设计-- 自行车刹车手把工艺及模具设计.doc

毕 业 设 计 设计（论文）题目： 自行车刹车手把工艺及模具设计 学 院 名 称： 机械工程学院 专 业： 材料成型及控制工程 定稿日期： 2014 年 5 月 4 日 摘 要 ABSTRACT The plastics industry in the world grows one of now quickest industry classes, but the injection mold is develops the quick type, therefore, the research injection mold to understood that the plastic product the production process and improves the product quality to have the very big significance. This design introduced injection moldings basic principle, specially single is divided the profile to inject molds structure and the principle of work, to cast the product to propose the basic principle of design; Introduced in detail the cold flow channel injection mold gating system, the temperature control system and goes against systems design process, and has given the explanation to the mold intensity request, through this design, may have a preliminary understanding to the injection mold, notes in the design certain detail question, understands the mold structure and the principle of work. Key Word: Plastic mold; Divides the profile; Design 目 录 引 言…………………………………………………………………………………1 1 塑件的图样表达………………………………………………………………..2 2 塑件成型工艺分析…………………………………………………………....4 2.1塑料成型工艺特性............................................................................................5 2.2塑件的结构工艺性............................................................................................5 2.2.1 塑件的尺寸精度分析................................................................................................5 2.2.2 塑件表面质量分析 7 2.2.3 塑件的结构工艺分析 7 2.2.4 塑件的生产批量 7 2.3注塑机的选用 7 2.3.1 计算塑件体积 7 2.3.2 计算塑件的质量…………………………………………………………………....7 2.3.3 选择注塑机型号……………………………………………………………….…...8 2.3.4 初选型腔数目 .8 2.3.5 确定注射成型的工艺参数........................................................................................9 2.4分型面位置的选择………………………………………………………………….....9 2.5型腔数量及注塑机有关工艺参数的校核....................................................