Variable Aperture Measuring Device Based on Multi-plate Capacitance Sensor
A multi-plate capacitance and measuring device technology, which is applied in the direction of electromagnetic measuring devices, electric/magnetic diameter measurement, etc., can solve the problems of not being able to measure the aperture in a large range and the limitation of the application range of capacitance sensors, so as to reduce the measurement cost and ensure the measurement Accuracy, the effect of improving the efficiency of measurement
Active Publication Date: 2017-01-04
HANGZHOU DIANZI UNIV
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Problems solved by technology
However, at present, capacitive sensor structures with fixed electrodes are mostly used in the fields of production, application and scientific research. The probe can only be used for the measurement of a certain fixed aperture, and cannot measure the aperture in a large range, which limits the application range of the capacitive sensor. Different apertures require different sensor probes
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[0016] Such as figure 1 and 2 As shown, the variable aperture measurement device based on multi-plate capacitive sensor includes electrode plate 1, slider 2, end cover 3, driving shaft 4, housing 5, driven bevel gear 6 and driving bevel gear 7; housing 5 There are four chute 5-1 arranged radially along the circumference, and the bottom is connected with the end cover 3 by screws; the bottom of the chute 5-1 is opened on the top inner wall of the housing 5; the inner center of the housing 5 is There is an integrally formed driven shaft 5-2; the driven bevel gear 6 is supported on the driven shaft 5-2 through a bearing; the driving bevel gear 7 is fixed to the driving shaft 4; the driving shaft 4 is supported on the housing 5 through a bearing, One end extends out of the housing 5; the driven bevel gear 6 meshes with the driving bevel gear 7, and the included angle between the axes of the driven bevel gear 6 and the driving bevel gear 7 is 90°. The four sliders 2 are respectiv...
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The invention discloses a variable aperture measuring device based on a multi-plate capacitance sensor. At present, capacitive sensor structures with fixed electrodes are mostly used in production applications and scientific research fields, and their probes can only be used for the measurement of fixed apertures, and cannot be used for large-range measurement of apertures. The invention comprises electrode plates, sliders, driving shafts, housings, driven bevel gears and driving bevel gears; the top of the housing is provided with a plurality of slide grooves; the inner center of the housing is provided with a driven shaft; the driven bevel gear Supported on the driven shaft; the driving bevel gear and the driving shaft are fixed; the driving shaft is supported on the housing through bearings, and one end protrudes out of the housing; the driven bevel gear meshes with the driving bevel gear; each chute of the housing is A slider is provided, and the threads at the bottom of each slider are engaged with the plane threads at the top of the driven bevel gear; an electrode plate is fixed on the inner wall of each slider; all electrode plates are evenly distributed along the circumference. The invention can realize the precise measurement of the variable aperture and ensure the measurement accuracy in a relatively large measuring range.
Description
technical field [0001] The invention belongs to the technical field of precision measuring instruments, and relates to an aperture measuring device, in particular to a variable aperture measuring device based on a multi-plate capacitance sensor. Background technique [0002] With the rapid development of machinery, aerospace, military and other fields, higher and higher requirements are put forward for the processing and measurement of tiny dimensions. High precision and miniaturization are the main trends of current technology and industrial development. [0003] Aperture measurement is one of the important contents of hole geometric quantity measurement technology. There are many methods for aperture measurement, but due to the limitation of space size and the influence of measurement contact force, there are some defects. Capacitive sensors are widely used in the measurement of the inner diameter of small holes, and their main advantages are: (1) not only can measure tiny...
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IPC IPC(8): G01B7/13
Inventor 王文诸丽燕卢科青范宗尉张敏袁科杰
Owner HANGZHOU DIANZI UNIV