The invention discloses a Harris vertex extraction method and system for honeycomb regularity detection. The method comprises the steps of image acquisition, image processing, vertex extraction and morphological analysis, wherein in the step of vertex extraction, on the basis of a burr-free graph, a window with the size of 5 * 5 pixels is established by taking a pixel point with a pixel value of 1as a central point, an angular point response function value R corresponding to the central point is calculated by adopting a Harris algorithm and is processed, and related work of vertex extractionis completed. The system comprises a detection table (1), digital cameras (2) and a computer (3), wherein the digital cameras (2) are electrically connected with the computer (3); the number of the digital cameras (2) is at least one, the resolution of the digital cameras (2) is not lower than 1080P, a telecentric lens is configured, and the installation mode of the telecentric lens is a fixed mode or/and a movable mode. The method and the system have the advantages of being scientific, reasonable, simple, easy to implement, high in detection precision, closer to actual conditions and the like.

Harris vertex extraction method and system for honeycomb regularity detection

The invention discloses a method and a device for detecting the regularity of a honeycomb product on a production line, and the method for detecting the regularity of the honeycomb product on the production line comprises the steps: adjusting a camera to enable the camera to at least collect a column of complete cells, perpendicular to a product pushing direction, of the honeycomb product on the production line; acquiring a honeycomb image; performing binarization processing on the honeycomb image to obtain a binarized image; extracting vertexes of honeycomb cells in the binarized image; reconstructing to obtain a honeycomb cell element image according to the mapping relationship between the vertex and the cell element; and calculating a deviation average value of all cell angles in the honeycomb cell image, and evaluating the honeycomb quality according to the average value. The method is novel and efficient, can realize real-time detection of the production line of the geometric regularity of the honeycomb product, and realizes real-time quality monitoring in the production process of the honeycomb product.

Method and device for detecting regularity of honeycomb products on production line

The invention discloses a method for identifying honeycomb edges from honeycomb core surface measurement data. The method comprises the following steps: performing two-dimensional coordinate transformation on collected honeycomb core surface three-dimensional data, identifying corner points in a two-dimensional plane projection image of a honeycomb core through a corner point detection algorithm,wherein the corner points comprise a human-shaped vertex, a Y-shaped vertex, a pseudo vertex and unrecognized missing corner points; based on the proposed corner type judgment algorithm, sequentiallyidentifying two endpoints of the honeycomb edge, determining one endpoint during adjacent edge identification, and determining the other endpoint through local analysis of the identification vertex; and effectively eliminating pseudo vertexes in the implementation process of the honeycomb edge, supplementing missing vertexes, and achieving stable and high-precision honeycomb edge recognition. According to the method, the data processing problem of honeycomb core measurement is effectively solved, and the method is flexible, high in precision and good in robustness, and the measurement requirement of the honeycomb core surface after actual machining can be met.

Method of identifying honeycomb edges from honeycomb core surface measurement data

The invention provides a dual-excitation ultrasonic elliptical vibration-cutting device. The dual-excitation ultrasonic elliptical vibration-cutting device comprises a longitudinal vibration ultrasonic vibrator and a bent ultrasonic vibrator, wherein the longitudinal vibration ultrasonic vibrator comprises a first pre-tightening bolt and a longitudinal vibration rear cover plate, piezoelectric ceramic, an electrode slice and a longitudinal vibration front cover plate which sleeve the first pre-tightening bolt; the bent ultrasonic vibrator comprises a second pre-tightening bolt as well as a bent vibration rear cover plate, piezoelectric ceramic, an electrode slice and a bent vibration front cover plate which sleeve the second pre-tightening bolt, wherein a tool is connected onto the bent vibration front cover plate; and the first pre-tightening bolt is connected onto the bent vibration rear cover plate. Through the longitudinal vibration ultrasonic vibrator, two phases, in the radial direction of the device, of the longitudinal vibration ultrasonic vibrator, and in the axial direction of the device, of the bent ultrasonic vibrator have excitation of certain phase difference, so thatthe device has a dual-bent-vibration mode, and therefore, an elliptical vibration track is output on the tool. The dual-excitation ultrasonic elliptical vibration-cutting device is remarkable in effect in high-integrity processing of a crisp and hard difficult-to-process material, can remarkably reduce tool abrasion, restrains processing flutter, reduces concave pits and micro cracks of the processing surface, and reduces workpiece surface roughness.

Dual-excitation ultrasonic elliptical vibration-cutting device

The invention provides a single-excitation ultrasonic oval turning device comprising an ultrasonic power source, a device shell and an ultrasonic oval vibration cutting unit sealed in the device shell. The ultrasonic power source is connected to the device shell. The device shell is detachably connected to the workbench of the machine tool. The ultrasonic oval vibration cutting unit comprises an input end fixed to the device shell, an output end connected with a cutter and multiple vibration transmitting rods connected between the input end and the output end. The multiple vibration transmitting rods are different in structural properties, so that phase difference exists between the phases of vibration, and then an oval vibration path is output. By means of designing and replacing two-grade vibration transmitting rods, the output oval vibration path can be changed, in combination with different machining application occasions, the oval vibration path is reasonably adjusted, and then better machining quality is obtained. By the adoption of the single-excitation oval vibration implementation scheme, ultrasonic oval vibration output is stable, the overall structure is easy and convenient, and industrialization is facilitated to be achieved.

Single-excitation ultrasonic oval turning device

The invention discloses a design method of a composite vibration grinding wheel for ultrasonic machining. The design method comprises the following steps that according to machining requirements, thevibration mode of an ultrasonic composite vibration grinding wheel is determined; an inner-layer grinding ring, an outer-layer grinding ring and the size of a connecting taper handle are designed according to the required vibration mode; the position of a water passing hole of the outer-layer grinding ring is determined, wherein the position of the water-passing hole of the outer-layer grinding ring is overlapped with the position of the pitch diameter of the outer-layer grinding ring in the pitch diameter mode; the connecting relation between the connecting taper handle and the outer-layer grinding ring is determined; a connecting flange is designed according to the work mode of the outer-layer grinding ring; and all parts are assembled to form the ultrasonic vibration composite grindingwheel. According the composite vibration grinding wheel designed through the method for ultrasonic machining, friction at pitch circles and pitch points can be reduced, rough machining and finish machining can be realized in one working procedure, the production efficiency is improved, the grooving modes of the inner-layer grinding ring and the outer-layer grinding ring is changed, ultrasonic vibration in different forms can be obtained, different machining requirements can be met, and the machining quality is further improved.

Design method of composite vibration grinding wheel for ultrasonic machining

The invention provides a single-excitation three-dimensional ultrasonic elliptic turning device The device comprises an ultrasonic power supply, a device shell and an ultrasonic elliptic vibration cutting unit in the device shell, wherein the ultrasonic power supply is connected with the device shell; the device shell is fixed on a worktable of a machine tool; the ultrasonic elliptic vibration cutting unit comprises an input end which is fixed on the device shell, an output end which is connected with a cutter and a plurality of vibration rods which are connected between the input end and theoutput end; and the plurality of vibration rods are different in the aspect of structural property, so that the phases of vibration have phase differences so as to output three-dimensional elliptic tracks The device has the characteristics of being simple in structure, small in machining interference, high in cutting efficiency, adjustable in three-dimensional vibration track of the cutter and relatively high in applicability

Single-excitation three-dimensional ultrasonic elliptic turning device

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