纸带式穿孔机设计+CAD图纸
时间:2019-04-08 12:25 来源:毕业论文 作者:毕业论文 点击:次
| 摘要：本文研究的是“纸带式穿孔机”，此设备形状虽小，但结构上有其特别之处。由于加工对象是纸制品，在设计中，要根据纸带的特性，区别于塑料薄膜式穿孔机，使其符合新的加工要求。关于它送料方式选择，根据纸带的特性，此穿孔机采取推的送料方式。此设备是通过主轴的旋转来带动冲料，抬料和送料三个动作而进行的。其中偏心轮机构负责带动冲头冲料和杠杆抬料工作，凸轮机构负责穿孔机的送料工作。在送料过程中，首先要进行抬料，然后才能送料，所以需要计算抬料力。为了满足设计要求，还要计算出冲裁力的大小以及对轴的作用力的大小，从而确定所需电动机的功率，并且合理选用电机。通过计算弯矩、扭矩、强度等要求，确定选用轴。为保证达到棘轮每转过一个角度就能带动纸带前进3mm的要求来选用棘轮。此外，纸制品中合理的成型工艺、先进的模具也是必不可少的重要因素。选用载荷、寿命均能达到要求的轴承，并且计算设计凸轮、偏心轮与杠杆机构的详细参数。34417 毕业论文关键词： 送料方式；抬料机构；冲裁模具；棘轮机构 The design of Paper tape puncher Abstract: This article is about "paper tape puncher". Although the equipment shape is small, the structure is very special. Because the processing object is paper products. In design, according to the characteristics of paper tape, which is different from plastic film puncher, make it conform to the new processing requirements. How to select the way of feeding? According to the characteristics of paper tape, the choice of feeding way about this puncher is to push. The mechanism works through the rotation of the spindle, which drives the three movements about punching, lifting and feeding. The eccentric wheel is responsible for driving the punch punching and lifting material. And cam mechanism is responsible for feeding material. In the process of feeding, first to uplift material, and then feeding. So need to calculate the lifting force. In order to meet the design requirements, It is necessary to calculate the size of the cutting force and the size of the axis force, Then to determine the power of the motor and choose motor reasonably. To determine the selection of shaft by calculating the moment, torque, strength, etc.. To choose ratchet according to requirements that ratchet turned each an angle can drive the tape forward 3mm. In addition, the reasonable forming process and advanced mold of paper products are indispensable factors. The bearing can be reached by load and life. And calculating the parameters of the cam, eccentric wheel and lever mechanism. Keywords: feeding way; lift material structure; punching mold; ratchet mechanism 目 录 摘要 Ⅰ Abstract Ⅱ 1 绪论 1 1.1 课题来源 1 1.2 选题背景及其意义 1 1.3 纸带式穿孔机在国内外的发展前景 1 1.4 设计的原始参数及技术要求 3 2 纸带式穿孔机的结构分析与工作原理 4 2.1纸带式穿孔机的结构分析 4 2.1.1送料方式的选择 4 2.1.2送料机构的分类 4 2.2纸带式穿孔机的工作原理 5 3冲料机构的设计及计算 7 3.1冲裁模具结构的设计 7 3.2冲头的设计 7 3.3冲裁力的分析与计算 7 4抬料机构的设计及计算 9 4.1抬料机构的设计 9 4.2抬料力的计算 9 5送料机构的设计及计算 10 5.1送料机构的总体设计 10 (责任编辑：qin) |