摘要:切削加工过程中的切削力大小将直接影响切削热的产生、被加工表面的质量、工件的加工精度、刀具的磨损。由于加工条件的复杂性和不确定性，切削力的理论计算值与实际值存在偏差，最好用测力仪实地测量。为了能够直接测量切削力的大小，出现了许多类型的测力仪，其中大多数用来测量静态或准静态力。随着精密加工技术的发展，能测量动态切削力的测力仪成了研发目标。钻削测力辅助装置由上盖，基座和夹在中间的压电石英晶体组成。此钻削测力仪结构的特性，可以提高了测力仪的灵敏度，而且能自动补偿了切削热引起的误差。压电石英晶体的摆放起到力的传递和分载作用，是测力仪的关键部分。关键词：刀具；测力仪10793
Drilling force measurement system auxiliary device design
Abstract: Size of cutting force in the process of cutting will directly affect the quality of cutting heat generation, processing surface, the precision work piece machining, tool wear Because of the complexity and uncertainty of the process conditions, cutting force calculation values with the actual values of the deviation, it is best to use dynamometer measurements in the field. Direct measurement of cutting forces in order to be able to size, there have been many types of dynamometer, most of them used to measure static or quasi-static force. With the development of precision machining technology, measurement of dynamic cutting force dynamometer became a research and development objectives. Drilling force on the secondary device is covered, bases and composed of piezoelectric quartz crystal in the middle. This drilling dynamometer structure characteristics, can improve the sensitivity of the dynamometer, and automatic compensation of cutting heat causing the error. Piezoelectric quartz crystal placed to force delivery and loading, is a key part of the dynamometer.
Key Words：tools；Dynamometer
目 录
1 绪论 - 2 -
1.1课题来源及研究意义 - 2 -
1.2 课题研究的背景 - 3 -
1.2.1 压电效应研究的历史和现状 - 3 -
1.2.2钻削测力仪的研究现状 - 5 -
1.2.3 测力仪的数学模型和频率特征分析 - 7 -
1.2.4 测力系统的组成 - 8 -
1.3 结构设计原则 - 8 -
1.4 课题设计原理 - 10 -
2 传感器的综述 - 10 -
2.1 传感器的专业术语及系统介绍 - 10 -
2.2 压电式测力传感器的性能分析及工作原理 - 12 -
2.2.1 压电式测力传感器的介绍及工作原理 - 12 -
2.3 压电式测力传感器的应用 - 16 -
2.3.1 压电式测力传感器的分类 - 16 -
2.4 结论 - 19 -
3 传感器的设计 - 19 -
3.1 钻削测力仪的构造原理 - 19 -
3.2 轴向力测量原理和晶组组成 - 20 -
3.2.1 轴向力测量原理 - 20 -
3.2.2 轴向力测量晶组组成 - 20 -
3.3 扭矩测量原理和晶组组成 - 21 -
3.3.1 扭矩测量原理 - 21 -
3.3.2 扭矩测量晶组组成 - 22 -
4 测力辅助装置的设计 - 23 -
4.1 方案一 - 23 -
4.1.1构件的组成及其工作原理 - 23 -
4.1.2 钻削力及扭矩的计算 - 25 -
4.1.3 连接底板的螺栓确定及底板校核 - 26 -
4.1.4 结构特点 - 28 -
4.2 方案二 - 28 -
4.2.1构件的组成及其工作原理 - 28 - 钻削测力系统的辅助装置设计+CAD图纸+答辩PPT:http://www.751com.cn/jixie/lunwen_9935.html