1、 I 汽车底盘支架冲孔模具设计汽车底盘支架冲孔模具设计 摘 要 现代汽车绝大多数都具有作为整车骨架的车架，车架是整个汽车的基体，其中汽车 底盘支架是汽车底盘里的支撑零件之一，汽车底盘支架，大量用于汽车覆盖件、安装机 构上，其形状各异，是支承、安装汽车发动机及其各部件、总成，形成汽车的整体造型， 并接受发动机的动力，使汽车产生运动，保证正常行驶。大多数汽车底盘支架都是通过 冲压模具来批量生产的，模具的设计与加工工艺关系到产品的质量。 模具工业是国民经济的基础工业，模具设计与制造技术水平的高低，是衡量一个国 家产品制造水平高低的重要标志之一。本文以汽车底盘支架冲孔为例，根据该支架的实 际尺寸和形状
2、特点，进行了冲压工艺的分析以及模具凹模尺寸的确定。通过冲压设计手 册，依据凹模尺寸查得整副模具的尺寸要求。运用 CAD 软件对冲孔模具的设计，得出了 具体的冲压设备与冲孔模具各零件的加工工艺。 关键词:汽车底盘;支架;冲孔模;冲压工艺;设计 II ABSTRACT Most modern cars have a skeleton as a vehicle frame, the frame is the matrix of the entire car, the car chassis is one of the support parts in the automobile chassis,
3、a large number of chassis was used for automobile covering parts and installation mechanism, its shape different is supporting installation of automotive engine and its components, assembly to form the overall shape of the car, and to accept the power of the engine, the car produces sports to ensure
4、 normal driving. Most of the chassis to support all mass-produced by stamping dies， mold design and processing technology related to the quality of the product. The mold industry is the basic industry of the national economy, the level of mold design and manufacturing technology, is one important in
5、dicator for measuring a countrys level of product manufacturing. According to the actual size and shape of the bracket features ， in this paper, an example chassis bracket punching，Stamping process carried out the analysis and determine the size of the die mold. Design Manual by pressing, investigat
6、ion was based on die size of the entire vice die size requirements. Punching mold design, draw a specific process of stamping and punching mold parts using CAD software. Key words: Chassis; Support; Piercing Die; punch process; Design III 目 录 1 绪论 1 1.1 选题的背景、目的和意义 . 1 1.2 国内外模具发展状况及趋势 . 1 1.3 本次设计的主要方向 . 2 2 汽车底盘支架冲压工艺 4 2.1 冲压件工艺分析 . 4 2.2 零件冲压工艺方案的分析及确定 . 4 2.3 制件排样及搭边 . 6 3 汽车底盘支架模具的工艺尺寸计算 8 3.1 工作零件刃口尺寸计算 . 8 3.1.1 刃口尺寸确定的原则 8 3.1.2 刃口尺寸确定的方法 8 3.2 冲裁力与压力中心的计算 . 10 3.2.1 冲裁力的计算 10 3.2.2 卸料
