凸轮驱动简易剪刀设计与造型
摘 要 凸轮驱动简易剪刀机构在国内外有着广泛的运用，国内许多大型的纺织厂，国外 的许多牧场的割草机也是采用这样的机构，在实际生活中运用颇多。本次设计的主要 内容是凸轮驱动的简易剪刀机构，该机构主要通过电机来带动凸轮转动，确定电机的 基本形式和选型，然后确定联轴器的基本选型。设计中的主要方式凸轮结构，设计中 的核心机构为凸轮结构，通过对剪刀的运动规律来确定驱动凸轮的轮廓曲线，并进行 相关的计算，连杆机构负责对剪刀驱动的最终实现，连接凸轮机构与两个剪刀叉式的 构件，随着电机来驱动凸轮转动，从而带动连杆的运动，进而实现剪刀修剪材料的功 能。完成好基本的结构设计后，运用三维软件和二维软件将整体的总体结构图绘制出 来，完成总体的装配图还有部分的部件图，最后完成设计说明书的编写。 关键词:转动电机；凸轮连杆；曲柄连杆；剪刀叉
Abstract This design mainly is a kind of practical design of a small structure, the main content of the design is the design of the CAM driver simple scissors, through the survey data, understand the basic shape of this kind of small structure to determine its basic solution. After complete understanding of the basic scheme, started for the overall design of this structure, through the motor to drive, determine and basic form of the motor selection, and then determine the coupling the basic selection, the main way in the design of the CAM structure, to determine the basic form of CAM good this type of CAM driver, and on the relevant computation, can determine the basic process of it, so, of course, the simple CAM driven scissors also includes the use of the form of bar linkage, CAM rotation is one aspect, to design the basic process of crank connecting rod mechanism, the connection at the end of the connecting rod movement is the scissors cuts the two knife and fork type bar, as the motor to drive the CAM rotation, thereby giving impetus to the movement of connecting rod, so as to realize the action of scissors, such a design process to meet the basic structure. After finish the basic structure design, using 3 d software and 2 d software will be mapped, the overall structure of the system of the whole complete assembly drawing and part of the overall block diagrams, finally can complete design specification writing, probably the whole process is a process. Key words: Rotate the motor; CAM connecting rod; The crank connecting rod; Cut a knife and for
第一章 序言 1.1 国内外研究现状 在凸轮驱动简易剪刀这方面，我国在很多机械方面的工作已经彰显出了强大的技 术，我国在很多方面都应用到了这样的构造与技术，比如国内许多大型纺织厂，服装 厂，以及各类铁片加工剪切方面都应用到了凸轮驱动剪刀，这一设计便捷且效率高。 而国外在这方面的应用更加的成熟，众所周知，国外的农场牧场很多，植物的绿化以 及牧场牧草的收割，都离不开这样的机械构造，他们完美的利用了凸轮驱动剪刀的优 点，为他们的工作，社会经济的发展，带来了不可小觑的利益。现如今，我国与国外 在凸轮剪刀驱动这方面都有深度研究，用此机械结构为人类发展做出了贡献.
目录
第一章 序言..........................................................................................................................1
1.1 国内外研究现状......................................................................................................1
1.2 课题研究内容..........................................................................................................1
1.3 本章小结..................................................................................................................2
第二章 方案设计..................................................................................................................3
2.1 基本方案的对比......................................................................................................3
2.2 基本方案的提出......................................................................................................3
2.3 基本方案的分析......................................................................................................4
2.4 本章小结..................................................................................................................5
第三章 剪刀叉的结构设计..................................................................................................6
3.1 剪刀叉的基本形式确定..........................................................................................6
3.2 剪刀叉连杆设计......................................................................................................6
3.3 剪刀叉的 NX 造型设计过程.................................................................................. 7
3.4 本章小结................................................................................................................. 8
第四章 凸轮结构设计..........................................................................................................9
4.1 凸轮从动件的确定.................................................................................................9
4.2 从动件运动规律曲线...........................................................................................10
4.2.1 计算从动件的主要运动参数...................................................................10
4.2.2 确定凸轮基圆直径..................................................................................... 11
4.2.3 凸轮轮廓设计.............................................................................................12
4.2.4 凸轮副材料选择.........................................................................................14
4.3 凸轮副接触强度校核及压力角校核....................................................................14
4.4 凸轮的 NX 造型设计............................................................................................ 16
4.5 本章小结................................................................................................................17
第五章 驱动部分动力设计................................................................................................18
5.1 驱动电动机的选择................................................................................................18
5.2 联轴器的设计选型...............................................................................................18
5.3 本章小结............................................................................................................... 19
第六章 凸轮驱动简易剪刀机构的装配............................................................................20
第七章 凸轮驱动简易剪刀机构仿真过程........................................................................24
第八章 结论与展望............................................................................................................28
致 谢....................................................................................................................................28
参 考 文 献........................................................................................................................30
参 考 文 献 [1]姜陪刚,机电一体化系统设计,机械工业出版社. [2]黄蔌调编，机电一体化技术基础及应用，机械工业出版社. [3]赵松年、张奇鹏，机电一体化系统设计，北京，机械工业出版社. [4]张建民，机电一体化原理与应用，北京，国防工业出版社. [5]魏俊敏，机电一体化系统设计，北京，中国纺织出版社. [6]周祖德，机电一体化控制技术与系统，华中理工大学出版社. [7]胡洪，姚博伟，机电一体化原理及应用，北京，国防工业出版社. [8]梁景凯，机电一体化技术与系统，北京，机械工业出版社. [9]王爱玲，白恩远，赵学良，赵建.现代数控机床.北京.国防工业出版社.2005 年. [10]遇天志.开放式数控运动平台开发.西安交通大学
