摘 要
随着我国商品经济迅速发展日益壮大，工业产品的经济性及环保性受到了人们越来越多的重视。国内已可以生产纸筒剪切设备，但是国内目前设备的自动化水平和生产效率比较低，如果又只是引进国外的纸筒设备的话，又会面临价格昂贵的情况。
本设计根据上述实际情况，并结合企业的生产的实际需求，设计出了一种纸筒剪切的自动化设备方案。本设备可用来生产一种用于剪切花炮筒等纸筒的纸筒剪切机，具有较高的自动化水平，也兼具较好的经济性。该方案中的主要创新之处在于，电动机输入动力后，通过一级带减速和二级齿轮减速后提供到执行机构。一级带传动有能够做到缓冲、吸收机构运行中产生的振动，使生产过程平稳的同时又有结构简单的特点；而齿轮传动具有功率覆盖范围大，在工作运行之中的性能可靠，结构紧凑的同时又有着较高的传动效率等优点。通过这样的三级减速传动结构能够达到一种得到较小的动力损失，传动平稳高效的目的。刀具往复运动过程在本设计中，是依靠曲柄滑块机构来实现完成。从而，该执行机构能够将传动系统中原本执行的回转运动，转换成纸筒剪切机所需要的直线运动，达到使纸筒剪切机做往复运动切割纸筒的目的。
本纸筒剪切机的设计内容主要包括为：纸筒剪切机的传动机构和执行机构。对传动部件中的电机、带等零件和执行机构涉及的曲轴、连杆、导杆、轴承等零部件进行了选型和结构设计计算以及关键零件的校核。
关键词：纸筒剪切，带传动，齿轮传动，轴，切刀
ABSTRACT
With the rapid development of China's economy, the economic and environmental protection of industrial products have attracted more and more attention. China has been able to produce paper cutting equipment, but the automation level and production efficiency is relatively low, if import foreign tube equipments,a expensive situation will be faced .
According to the actual situation combined with the actual needs of enterprise production, an automation equipment scheme of a tube shear is designed. This equipment can be used in the production of a paper for shearing fireworks barrel cylinder, with a higher level of automation, it also has a better economy. The main innovation the scheme is that the input power of the motor provided to the actuator through a speed reducer and two gear reducer. A belt drive can produce vibration buffering and absorbing mechanism in operation, make the production process smoothly at the same time it has the advantages of simple structure; gear transmission with power coverage, at work the performance is reliable, and has advantages of compact structure and high transmission efficiency. Through the three speed transmission structure can achieve a smaller power loss, smooth transmission and high effect. The tool reciprocates in the design process is rely on the slider crank mechanism to achieve complete and. The agencies will be able to perform, the original implementation of the transmission system of rotary motion into linear motion, paper cutting machine needs to do reciprocating motion, cutting cylinder.
The design mainly includes shearing machine cylinder gear and actuator. Motor for driving parts in the crankshaft, belt and other parts and the executive body of the connecting rod, a guide rod, bearings and other components are checked.
Key words: Paper Tube cutting；Belt drive；Gear drive；Axis；Cut knife
目 录
摘 要 II
Abstract III
摘 要 I
ABSTRACT II
1 绪论 1
1.1课题背景 1
1.2 国内外的纸筒剪切机之研究现状 1
1.3 本文的主要设计研究内容 2
2总体方案设计 3
3动力机构和传动系统的设计计算 4
3.1 电机选型 4
3.1.1传动方案简述 4
3.1.2剪切力的计算 4
3.1.3功率计算 5
3.2传动系统设计 6
3.2.1 基本传动数据计算 6
3.2.2 带传动设计 7
3.2.3 齿轮传动设计 9
（1）第一级齿轮的传动设计 9
（2）第二级齿轮传动设计： 13
4轴的设计与校核 18
4.1 设计校核一轴 18
1) 设计轴系结构 18
1） 求作用在轴上的力 19
4.2 设计校核二轴 21
1) 设计轴系结构 21
4.3 设计校核三轴 24
1) 设计轴系结构 24
2） 求作用在轴上的力 26
5键的设计与校核 29
（1）选择键 29
（2）挤压强度的核算 29
6轴承的校核 31
根据相关资料上的数据表格可以明确 32
7结论 34
参考文献 35
致 谢 36
