旋风铣削加工刀齿切削力在线测量与预报

发布时间：2018-07-26 08:19

【摘要】：为在线监测螺纹硬旋铣过程的刀具状态、研究其切削机理、实现硬旋铣工艺的高性能加工,提出一种用于旋铣工艺的压电式刀齿三向切削力在线测试系统。结合旋铣工艺运动特征对测试系统进行性能要求分析和结构设计,并运用有限元法分析测力仪结构设计的合理性,通过静态加载试验和锤击模态试验获得测力仪的主要性能参数,将测试系统用于旋铣工艺刀齿切削力的测量。为验证试验数据的有效性,建立基于剪切与犁切效应的双圆弧螺纹滚道旋铣切削力预报模型。试验数据与预测数据取得了很好的一致性。结果表明所研制测试系统完全适用于螺纹旋铣过程刀齿切削力的测量,将为深入研究硬旋铣工艺的加工机理提供重要技术手段。
[Abstract]:In order to monitor the cutting state of thread hard rotary milling process, study its cutting mechanism, and realize the high performance machining of hard rotary milling process, an on-line measuring system for the three dimensional cutting force of piezoelectric cutter teeth used in rotary milling process is proposed. The performance requirement and structure design of the test system are analyzed in combination with the motion characteristics of rotary milling process, and the rationality of the structural design of the dynamometer is analyzed by using the finite element method. The main performance parameters of the dynamometer were obtained by static loading test and hammer mode test. The test system was used to measure the cutting force of the rotary milling process. In order to verify the validity of the test data, a model for predicting the cutting force of double arc thread raceway rotary milling based on shear and ploughing effect was established. The experimental data are in good agreement with the predicted data. The results show that the developed testing system is suitable for measuring the cutting force of the cutter teeth in the process of screw rotary milling, which will provide an important technical means for the further study of the machining mechanism of the hard rotary milling process.
【作者单位】：南京理工大学机械工程学院;钟山职业技术学院工业与信息化分院;
【基金】：国家科技重大专项资助项目(2009ZX04001-171-02,SK201201A40-01)
【分类号】：TG54

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