Fork lug lug assembly pin hole coaxiality measurement method
A technology of coaxiality measurement and fork lugs, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of low assembly efficiency and difficulty in automatic assembly, and achieve the effect of improving assembly accuracy
Active Publication Date: 2018-02-02
TSINGHUA UNIV +1
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Problems solved by technology
Existing technology cannot achieve high-precision real-time coaxiality measurement, resulting in low assembly efficiency and difficulty in automatic assembly
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[0029] The method for measuring the coaxiality of the pin hole of the fork lug assembly according to the present invention will be described in detail below with reference to the accompanying drawings. refer to Figure 1 to Figure 13 , according to the method for measuring the pin hole coaxiality of the fork lug and lug assembly of the present invention, it includes the steps: S1, the camera 1 and the light source 2 are respectively installed on both sides of the fork lug pin hole 31 along the axis of the pin hole, so that the light source 2 The emitted light can be captured by the camera 1 through the fork lug pin hole 31; S2, the lug 4 is put into the fork lug 3 to form a fork lug lug assembly, so that the lug pin hole 41 and the fork lug pin hole 31 are partially Coincidence, light can pass through; S3, turn on the light source 2, use the camera 1 to shoot the pin hole image of the fork lug assembly from the pin hole axis direction; S4, image processing and extract the requ...
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The invention provides a coaxiality measuring method for a pin hole of a fork ear and lug assembly. The method comprises the steps that S1) a camera and a light source are mounted at the two sides of a pinhole of a fork ear along the axis of the pinhole respectively, so that light emitted by the light source can be captured by the camera by passing through the pinhole of the fork ear; S2) a lug is mounted in the fork ear to form the fork ear and lug assembly, so that a pinhole of the lug is partially overlapped with the pinhole of the fork ear, and light can be transmitted; S3) the light source is opened, and the camera is used to shoot a pinhole image of the fork ear and lug assembly along the axial direction of the pinhole; S4) the image is processed, and required features are extracted from the image; and S5) whether the pinhole of the fork ear is coaxial with the pinhole of the lug is determined according to the extracted features, and if not, the deviation direction of the axis of the pinhole of the lug relative to the axis of the pinhole of the fork ear is provided. The camera is used to shoot the pinhole image of the fork ear and lug assembly along the axial direction of the pinhole, the coaxility of the pinhole of the fork ear and the pinhole of the lug is measured in real time and back fed and controlled, and the assembling precision is thus improved.
Description
technical field [0001] The invention relates to the technical field of assembly control and detection of large parts, in particular to a method for measuring the coaxiality of pin holes of a fork lug lug assembly. Background technique [0002] Fork lug and lug assembly is a common assembly method in the field of large parts assembly. The coaxiality of the fork lug and the lug pin hole determines the assembly error between related components. During the assembly process of the fork lug and the lug, it is necessary to measure the coaxiality of the pin hole in real time and perform feedback control to control the assembly accuracy. The prior art cannot achieve high-precision real-time coaxiality measurement, resulting in low assembly efficiency and difficulty in automated assembly. SUMMARY OF THE INVENTION [0003] In view of the problems existing in the background technology, the purpose of the present invention is to provide a method for measuring the coaxiality of pin hol...
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IPC IPC(8): G01B11/27
CPCG01B11/27
Inventor 徐静陈恳刘炽成赵正大冯惊雷王国磊宋立滨杨向东
Owner TSINGHUA UNIV