摘 要

螺杆泵的工作原理是利用相互啮合的螺杆在进行旋转时把液体从吸入口输送到排出口。而寻找一种兼备稳定、高转速、结构简单、耐用等优点的螺杆泵十分重要，而lt;135gt;型三螺杆泵正符合这一要求。而想要确保螺杆泵维持高效工作就必须正确设计并加工螺杆型面。本文设计的从动螺杆型面测试系统依据空间啮合理论，以及刀具廓形设计原理，推算出从动螺杆型面齿形方程，再将其输入到程序语句中绘制出曲线图，最后设计出一整套完整的检测系统。

研究螺杆泵的转子型线是该测试系统设计的基础。最重要的一步是推导出三螺杆泵的啮合线齿形以及转子型线方程，并在推导时修正其相应参数以符合实际设计使得需求。完成上述推导后，计算出螺旋曲面的特征方程，再结合刀具与工件的啮合方式及两者的相对运动关系，总结出成型铣刀与螺杆的接触线方程，采用 LabWindows/CVI软件编程计算从杆型面齿形坐标点、刀具安装角以及和转子的的中心距。并通过编程绘图，得到从杆的曲面啮合齿形，最后将实际产品的齿形与设计齿形比较，结果表明本文设计的从动螺杆型面测试系统精度高，符合设计要求。并在测试中改变其相关参数，总结其对加工的影响。为检验实际加工的螺杆型面，设计型面检测方案，测量螺杆横截面型线坐标，得出实验数据，并与理论值对比，结果表明测试方案可行

关键词：三螺杆泵；齿廓曲线；LabWindows/CVI；型面检测；

ABSTRACT

The working principle of screw pump is the use of the screw meshing live when rotate the liquid from inlet to outlet.Stable and looking for a kind of both ability and political integrity, high speed, simple structure and durable advantages of screw pump is very important, and lt; 135 gt; type three-screw pump is comply with this requirement.And want to make sure that the screw pump to maintain efficient work have to correct design and machining screw profile.Driven screw profile test system designed in this paper based on space meshing theory, and cutter profile design principle, calculated the driven screw tooth profile equation, then the input to the program statements in map graph, finally design a complete detection system.
The research of the screw pump rotor type line is the basis of the test system design.One of the most important step is to derive the tooth meshing line of three screw pump and rotor type line equation, and the correction when its corresponding parameters is derived in accordance with the actual design requirements.This is finished, to calculate the characteristic equation of spiral surface, coupled with cutting tool and the workpiece mesh method and relative motion of the two relations, summarizes the forming milling cutter with screw contact line equation, using LabWindows/CVI software programming calculation from pole tooth profile coordinate point, center distance of the cutting tool installation Angle and the rotor.And get from the rod drawing through programming, the surface of meshing tooth profile, finally the tooth form and tooth profile design of the actual product comparison, the results show that the design driven screw profile testing system of high precision, comply with the design requirements.And change the related parameters in the test, summarizes their effects on processing.To examine the actual processing of screw type, design type surface detection scheme, coordinate measuring screw type cross section line, it is concluded that the experimental data, and compared with the theoretical value, the test results show that the scheme is feasible

Key words：three-screw pump；tooth curve；LabWindows/CVI；Type surface detection；

目 录

摘要……………………………………………………………………………1

第一章 绪论………………………………………………………………………………………1

1.1螺杆泵简史及发展状况…………………………………………………………1

1.2 螺杆泵的工作原理及结构…………………………………………………………2

1.3螺杆泵的特点及应用……………………………………………………………………4

第二章 测试系统及螺杆相关参数介绍……………………………………………5

2.1 测试系统介绍 ……………………………………………………………………………… … … 5

2.1.1 检测的基本概念……………………………………………………………………… … …5

2.1.2 测试系统的功能………………………………………………………………………… … 5

2.2 lt;135gt;型摆线螺杆的横截面齿形…………………………………………………………5

2.2.1理论齿曲线…………………………………………………………5

2.2.2 从杆的实际设计齿曲线……………………………………………………7

2.2.3 横截面上的实际设计齿形………………………………………………8

第三章 测试系统软件简介………………………………………………………………………………10

3.1 测试系统软件介绍………………………………………………………………………………10

3.1.1 LabWindows/CVI软件简介……………………………………………………11

3. 1.2 LabWindows/CVI 特点 ……………………………………………………………11

第四章 测试系统设计…………………………………………………………………………………13

4.1面板搭建…………………………………………………………………………………………13

4.2 时间/日期模块……………………………………………………………………………………19

4.3 实际设计齿形模块………………………………………………………………………………20

4.4测试齿形模块……………………………………………………………………………………26

第五章 EXCEL表格生成功能……………………………………………………………………………27

5.1 建立EXCEL表格的目的………………………………………………………………………… 27

5.2 表格编辑…………………………………………………………………………………………27

第六章 运行效果…………………………………………………………………………………………30

6.1 实际设计齿形模块……………………………………………………………………………… 30

6.2 测试齿形模块………………………………………………………………………………… 31

6.3 数据处理…………………………………………………………………………………………33

结 论………………………………………………………………………………………………35

致 谢…………………………………………………………………………………………… 36