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Analysis of indirectly measured cutting forces in turning metallic cylinder shells
Engineering Education # 02, February 2014
DOI: 10.7463/0214.0687971
Measurement of cutting forces is an important component for development and validation of manufacturing processes. To use generally accepted direct measurement systems available for this purpose is often impossible. This paper suggests an indirect method to estimate the cutting force when turning a thin-walled cylindrical shell. The method is based on the displacement measurements of the flexible workpiece. Furthermore, when it comes to the flexible workpieces turning, cylindrical shells in particular, there is a need to use non-contact displacement sensors. This paper considers a specific manufacturing system in which two radial displacement sensors are located close to the free end of a cylindrical shell, the opposite end of which is rigidly fixed in a chunk of a lathe. Measuring the radial and the circumferential components of the cutting force is under study. The model has been developed in a quasi-static approximation. An experimental case has been analyzed using the proposed method. Optimization of the angular location of two displacement sensors has been proposed based on the idea of minimizing the condition number of the linear transformation matrix.
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