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为解决目前应变式切削测力仪设计中普遍存在的刚度和灵敏度之间的矛盾,本文在对已有应变式切削测力仪特性进行分析的基础上,提出了切削测力仪的杠杆—附加弹性元件设计方法的原理,并讨论了应用该方法设计时有关的若干问题和该方法在解决切削测力仪刚度与灵敏度之间矛盾方面所可能的贡献。理论分析的结果表明,该方法能有效地解决测力仪的刚度和灵敏度的矛盾,为大幅度提高切削测力仪的综合精度指标开创了新的途径。最后,介绍了笔者采用杠杆附加弹性元件方法研制的新型切削测力仪。实测结果表明,该测力仪同时具有高刚度和高灵敏度,其刚度与灵敏度乘积指标较现有同类测力仪提高了近一个数量级。
In order to solve the contradiction between stiffness and sensitivity which are common in the design of strain gauge dynamometer at present, based on the analysis of the existing strain gauge dynamometer characteristics, this paper puts forward the leverage of cutting force gauge - The principle of elastic element design method, and discusses some problems related to the design method of this method and the possible contribution of this method in solving the contradiction between rigidity and sensitivity of the cutting dynamometer. The results of theoretical analysis show that this method can effectively solve the contradiction between the stiffness and the sensitivity of the dynamometer, and opens a new way for greatly improving the comprehensive accuracy index of the dynamometer. Finally, the author introduces a new type of cutting dynamometer developed by the author using the method of lever additional elastic element. The measured results show that the dynamometer has high stiffness and high sensitivity at the same time, and the product index of stiffness and sensitivity is nearly an order of magnitude higher than that of the existing dynamometers.