A Measuring Method of Array Hole Through Porosity Based on Optical Fiber Displacement Sensor
A displacement sensor and measurement method technology, applied in the field of measurement, can solve the problems of inability to measure the through hole rate, poor feasibility, etc., and achieve the effect of high degree of automation and high measurement efficiency
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Embodiment 1
[0025] The present invention is realized through the following technical solutions, as figure 1 , figure 2 As shown, a method for measuring the through-hole ratio of an array hole based on an optical fiber displacement sensor drives the optical fiber displacement sensor to move at a constant distance from the surface of the part through a numerical control device, and the moving track passes through the axis of the hole to be measured, thereby judging whether it is a through hole, a non-hole, or a hole. Any one of the blind holes; and draw the distance-displacement relationship diagram output by the fiber optic sensor, and calculate the through-hole ratio based on this diagram.
[0026] It should be noted that through the above improvements, the numerical control equipment drives the optical fiber displacement sensor to move along the moving track while keeping the distance above the surface of the part. When measuring, the optical fiber displacement sensor will emit light be...
Embodiment 2
[0028] This embodiment is further optimized on the basis of the above embodiments, such as figure 1 , figure 2 As shown, further, in order to better realize the present invention, the following steps are specifically included:
[0029] Step S1: formulate the measurement trajectory according to the position of the hole on the surface of the part, and set the distance between the optical fiber displacement sensor and the surface of the part to always be a constant distance d0;
[0030] Step S2: Control the optical fiber displacement sensor to move along the measurement track through the numerical control equipment, and collect the distance ds between the optical fiber displacement sensor and the surface of the part in real time;
[0031] Step S3: Set the displacement of the optical fiber displacement sensor along the measurement track as S; draw the relationship between the distance ds and the displacement S of the real-time collected optical fiber displacement sensor from the...
Embodiment 3
[0037] This embodiment is further optimized on the basis of the above embodiments, such as figure 1 , figure 2 As shown, further, in order to better realize the judging method in the step S4 of the present invention, it specifically refers to: the depth of the set hole is H; the judging condition for the depth of the hole on the surface of the part is:
[0038] The detection area is a through hole: d(s)-d0>0.8H;
[0039] The detection area is non-hole: d(s)-d0<0.2H;
[0040] The detection area is a blind hole: 0.2H
[0041] It should be noted that, through the above improvements,
[0042] Other parts of this embodiment are the same as those of the foregoing embodiments, so details are not repeated here.
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