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The accurate and effective measurement of cutting force is of great significance to tool condition monitoring. Therefore, various methods of cutting force measurement have been proposed by different researchers. This paper studies the spindle integrated measurement method of cutting force based on Fiber Bragg Grating (FBG) sensing technology, proposes the symmetrical structure which is composed of four identical Γ beam base on the FBG strain detection principle and the force analysis of Γ beam, sets up the theoretical model of spindle integrated cutting force measurement method and determines the paste location of FBG through the analysis of cutting force transfer pattern. In order to verify the accuracy of theoretical model, the cutting force measurement experiment platform is constructed. Ultimately, the feasibility and reliability of this method is verified by experiment.
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