Calculation method of rotation error and roundness error based on hybrid four-point method based on three-point method
A technology of roundness error and rotation error, which is applied in the field of calculation of rotation error and roundness error based on the hybrid four-point method based on the three-point method, can solve the problem of three-point method with few operation steps, and achieve accurate, stable and easy measurement results. The effect of less understanding and operation steps
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[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0029] refer to figure 1 , a calculation method for rotation error and roundness error based on the hybrid four-point method of the three-point method, including the following steps:
[0030] Step one, such as figure 2 As shown, in the same section perpendicular to the axial direction of the rotary shaft, align the four displacement sensors with the axis of the rotary shaft, and press the angle [0,θ 1 ,θ 2 ,θ 3 ] arrangement, where θ 1 = 20°, θ 2 =90°, θ 3 = 150°, after the rotary shaft starts to rotate, the four displacement sensors sample 500 points per circle, and respectively measure the radial runout signal M of the outer surface of the rotary shaft 0 , M 1 , M 2 , M 3 ;
[0031] Step 2, divide the four signals into three groups, M 0 , M 1 , M 2 for the first group, such as image 3 Shown; M 0 , M 1 , M 3 for the second group, ...
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