塑料薄膜式穿孔机设计+CAD图纸
时间:2019-06-15 19:59 来源:毕业论文 作者:毕业论文 点击:次
| 摘要本次毕业设计的题目是“塑料薄膜式穿孔机设计”，此设备虽然外形小，但结构上确有其特别之处。因为加工对象是塑料薄膜，所以在设计中要根据塑料制品的特性，区别于纸带式穿孔机，使其能符合新的加工要求。一是关于送料方式的选择，根据塑料薄膜的性质，应采用拉的方式。为了达到这一设计要求，送料采用棘轮棘爪机构。另外，塑料薄膜制品中合理的成型工艺以及先进的模具也是不可缺少的因素。抬料以及冲孔都是通过偏心轮的转动来带动相应的运动连接件。为了满足设计要求，计算冲载力的大小以及轴的作用力大小来确定所需电机功率，从而选择电机。然后再通过计算抗弯抗扭以及强度要求来确定所需轴。之后再是轴承载荷、寿命计算，以及凸轮、棘轮棘爪的详细参数36292 毕业论文 关键词：塑料薄膜，送料方式，模具，棘轮棘爪; ABSTRACT The graduation design topic is "plastic film punch design, the device although small outline, but structure does have its special features. Because the processing object is a plastic film, so in the design to according to the characteristics of plastic products, the difference in paper tape punch, so that it can meet the requirements of the new processing. One is the choice of feeding way, according to the nature of plastic film, should be used to pull the way. In order to meet the requirements of the design, feeding the ratchet pawl mechanism. In addition, plastic film products in the reasonable molding process and advanced mold is an indispensable factor. Lifting material and piercing all through the rotation of the eccentric wheel to drive the corresponding movement connector. In order to meet the design requirements, the size of the load force and the force of the shaft are calculated to determine the motor power, thereby selecting the motor. Then, the required axis is determined by calculating the bending torsion and the strength required After the calculation of bearing load, life, and the detailed parameters of the cam, ratchet pawl Keywords: plastic film, feeding, mold, ratchet and pawl; 目 录 摘 要 -1- Abstract -2- 目 录-3- 第 1 章 绪论. - 4 - 1.1开题依据 - 4 - 1.2 穿孔机的基本概念 - 4 - 1.3 穿孔机的结构- 4 - 1.4 穿孔机的工艺过程 - 5 - 1.5穿孔机主传动的分类 - 5 - 1.6穿孔机安全防护 - 6 - 1. 7穿孔机发展现状 - 7 - 1.8毕业设计（论文）内容. .- 9 - 1.9设计内容的重点与难点 - 9 - 第 2 章穿孔机的结构方案论证 - 11 - 2.1 系统组成 - 11 - 2.2 设计方案拟定 - 11 - 2.3 送料方式的选择 - 11 - 2.4送料机构的选择 - 11 - 2.5冲料机构的选择 - 12 - 2.6模具冲头结构的选择 - 12 - 第3章 穿孔机的设计计算 - 13 - 3.1模具结构形式和选材 - 13 - 3.1.1模具结构形式 - 13 - 3.1.2冲头材料选择 - 13 - 3.2冲裁力的计算 - 14 - 3.3电动机的选型 - 15 - 3.4主动轴的设计 - 16 - 3.4.1轴的材料选择 - 16 - 3.4.2轴的结构设计 - 17 - 3.4.3轴的最小直径估算 - 17 - 3.4.4主轴抗弯、抗扭强度校核 - 18 - (责任编辑：qin) |