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内容来自论文无忧网 www.paper51.com 目 录 copyright paper51.com
摘 要················································································· Ⅰ 内容来自www.paper51.com Abstract··············································································· Ⅱ paper51.com 第1章 绪论········································································· 1 内容来自论文无忧网 www.paper51.com 1.1 选题的依据和意义························································ 1 paper51.com 1.2 本课题在国内外的研究现状··········································· 2 内容来自www.paper51.com
1.2.1 国内现状······························································· 2 内容来自www.paper51.com
1.2.2 国外现状······························································· 4 paper51.com
1.2.3 存在问题和主要差距··············································· 5 copyright paper51.com 1.3 本课题的发展展望························································ 6 paper51.com 第2章 方案分析与论证························································· 8 内容来自论文无忧网 www.paper51.com 2.1 设计任务····································································· 8 内容来自www.paper51.com 2.2 塑件分析····································································· 8 copyright paper51.com 2.3 设备的选择·································································· 9 http://www.paper51.com
2.4 设计依据··································································· 12 内容来自论文无忧网 www.paper51.com 2.5 拟定模具结构方案······················································· 13 内容来自www.paper51.com 2.6 方案论证··································································· 14 http://www.paper51.com 第3章 模具总体结构设计···················································· 16 内容来自论文无忧网 www.paper51.com
3.1 浇注系统设计····························································· 16 http://www.paper51.com 3.1.1 浇注系统的总体构成·············································· 16 paper51.com 3.1.2 主流道设计··························································· 16 内容来自www.paper51.com 3.1.3 分流道设计··························································· 18 内容来自论文无忧网 www.paper51.com
3.1.4 浇口设计······························································ 19 内容来自论文无忧网 www.paper51.com 3.1.5 冷料穴设计··························································· 20 copyright paper51.com
3.1.6 分型面的设计······················································· 21 paper51.com 3.1.7 排气槽的设计······················································· 22 http://www.paper51.com 3.2 成型部分及零部件设计················································· 23 内容来自www.paper51.com 3.2.1 型腔数的确定······················································· 23 paper51.com 3.2.2 一般凹凸模结构设计·············································· 23 http://www.paper51.com 3.2.3 成型零件工作尺寸················································· 24 copyright paper51.com 3.2.4 型腔壁厚计算······················································· 26 内容来自www.paper51.com 3.3 脱模机构设计····························································· 29 paper51.com 3.3.1 脱模机构的构成与功能··········································· 29 内容来自www.paper51.com 3.3.2 取出机构的方式设计·············································· 30 内容来自论文无忧网 www.paper51.com
3.3.3 脱出机构设计原则················································· 30 http://www.paper51.com 3.3.4 塑件的脱出机构设计·············································· 34 paper51.com 3.3.5 浇注系统凝料的脱出部件设计································· 38 copyright paper51.com
3.3.6 拉料机构设计······················································· 39 内容来自论文无忧网 www.paper51.com
3.4 侧向抽芯及合模导向机构设计······································· 40 copyright paper51.com
3.4.1 侧向抽芯机构设计················································· 40 copyright paper51.com
3.4.2 合模导向机构设计················································· 46 http://www.paper51.com 3.5 冷却系统设计····························································· 49 copyright paper51.com
3.5.1 冷却装置设计分析················································· 50 内容来自论文无忧网 www.paper51.com
3.5.2 冷却装置的理论计算·············································· 50 内容来自www.paper51.com 3.5.3 冷却回路的布置···················································· 53 paper51.com 第4章 模体设计与支承连接零件设计选择······························ 56 paper51.com 4.1 模体结构设计····························································· 56 copyright paper51.com 4.2 支承与连接零件·························································· 58 copyright paper51.com
4.2.1 支承件································································· 58 内容来自www.paper51.com 4.2.2 连接零件······························································ 59 paper51.com
4.3 其他零件··································································· 60 内容来自论文无忧网 www.paper51.com
设计小结·············································································· 63 paper51.com
致谢···················································································· 64 内容来自www.paper51.com 参考文献·············································································· 65 copyright paper51.com copyright paper51.com 第1章 绪论 paper51.com
1.1 选题的依据和意义 内容来自论文无忧网 www.paper51.com 毕业实习期间，我利用四周的时间在河北兴林车身制造集团有限公司实习。通过观察、询问及老师的指导对模具设计制造有了近一步的了解。鉴于此，毕业设计以松花江P-L型组合仪表罩为塑件，进行注塑模设计。 http://www.paper51.com 模具是现代工业生产中的重要工艺装备之一，模具工业是国民经济中重要的基础工业，模具设计与制造水平的高低是衡量一个国家综合制造能力的重要标志，决定着产品质量、效益和新产品的开发能力。注塑模在塑料模具中用量最大、涉及面广，约占整个塑料成型模具的60%，注塑模CAD/CAE/CAM技术是提高注塑成型效率和质量的最有效的途径。在当今激烈的市场竞争中，时间就是市场，时间就是企业的生命注塑模CAD/CAE/CAM技术的应用可显著提高塑料产品和塑料模具的设计、制造效率，提高设计制造质量，减少试模、修模时间，从而缩短从塑料产品设计、模具设计、模具制造到进行产品模塑生产的整个周期。国内外近几年公布的数据统计表明，国外采用CAD/CAE/CAM技术所取得的平均经济效率普遍提高，其中设计时间缩短了50%、制造时间缩短了30%、成本下降了10%、塑料原料节省了7%. http://www.paper51.com 众所周知，注塑模具的总体方案设计具有很强的经验性，它所涉及到的知识也是多领域的。在传统的设计方法中，一般都是由富有经验的模具设计师根据多年积累起来的经验，对新设计出来的塑料产品提出其模具的总体结构的设想，确定模具型腔参数、设计流道和浇口等，然后由制造工程师进行工艺规划，最后交付车间进行模具加工，加工装配后进行试模，根据所得到的试件对模具的设计进行评价，进行相应的改进。 http://www.paper51.com 注射模尤其是复杂的汽车内部制件在国外已普遍采用CAD/CAE/CAM设计制造集成系统。实现了注塑模设计、制造的一体化、集成化。一个国家模具生产能力的强弱，水平的高低，尤其是能否采用CAD/CAE/CAM设计制造集成系统先进设计制造集成系统已直接影响着许多工业部门的新产品的开发和旧产品的更新换代，影响着产品质量和经济效益的提高。采用模具生产制件具有生产效益高、质量好、切削少、节约能源和原材料、成本低等一系列优点。模具成型已成为当代工业生产的重要手段，已成为多种成型工艺中最有潜力的发展方向。而注塑模又是模具生产中采用最普遍的方法。 内容来自www.paper51.com |