1、 I 基于 Pro/E 的山地自行车造型设计 摘 要 山地自行车,英文名叫“mountain bike”,缩写为 MTB。山地自行车设计是一 项十分重要的工作,也是一门专业的抖学。国外山地自行车工业发达的国家都在 自行车设计中投入了大量人力、物力和财力,也取得了很好的效果。我国虽然被 称为自行车生产王国,但在产品设计工作上与国外先进水平相比还存在差距。为 了迅速提高我国自行车水平,必须在设计工作中下功夫。 山地自行车设计涉及到大量计算和技术问题,本设计将利用 PRO/E、CAD 等 软件从模型出发到一整部山地自行车的成型的介绍。将从山地自行车设计的技术 经济指标、山地自行车设计的使用要求和步骤
2、、山地自行车设计人员要求、山地 自行车影响出功率的机械因素、山地自行车行驶阻力、山地自行车安全要求、山 地自行车设计的配合要求八个方面。 关键词:山地自行车,PRO/E,CAD,机械因素 II Pro/E Based On The Mountain Bike Modelling Design ABSTRACT Mountain bike, called “mountain bike“ English, abbreviation for MTB. Mountain bike design is a very important work, is also a kind of profession
3、al shaking learn. Foreign mountain bike industry developed countries are in bicycle design invested a huge human, material and financial resources, and good results have been achieved. Although China is called the kingdom of bicycles, but production product design work compared with foreign advanced
4、 level also has the disparity. In order to quickly raise our bicycle level in design work, we must make great efforts. Mountain bike design involves substantial computation and technical problems, this design will use PRO/E, such as CAD software to a whole department from the model of the mountain b
5、ike molding introduction. Mountain bike design from technical and economic indexes, the use of the mountain bike design requirements and steps, mountain bike design personnel requirements, mountain bike influence the mechanical factors, the power of the mountain bike driving resistance, mountain bik
6、e safety requirements, mountain bike with eight aspects of design requirements. KEY WORDS: Mountain bike,PRO/E,CAD,Mechanical factors III 目 录 前 言 1 第 1 章 山地自行车设计的技术经济指标. 2 第 2 章 自行车行驶阻力分析. 5 2.1 滚动阻力 5 2.2 空气阻力 5 2.3 内部阻力 5 第 3 章 山地自行车设计的要点. 7 3.1 材料因素 7 3.1.1 下面就几种材料做具体分析. 7 3.1.2 材料的选择 . 11 3.2 结构因素 .12 3.2.1 车架 .13 3.2.2 前叉 .14 3.2.3 车把及位置 .15 3.2.4 前轴、后轴和中轴15 3.2.5 脚蹬 .16 3.2.6 飞轮 .16 3.2.7 变速器 .17 3.2.8 前后轮 .18 3.2.9 鞍座及高度 .19 3.2.10 前后闸 .20 3.2.11 曲柄20 第 4 章 自行车车座的模具设计21 4.1 塑件成型工艺性分析21 4