Machine vision detection method for workpiece contour flange protrusion based on G-code guidance

A technology of machine vision detection and workpiece contour, which is applied in the direction of instruments, image data processing, calculation, etc., can solve problems that cannot satisfy the distribution or probability model, and achieve the effects of reduced time, high accuracy, and improved efficiency
CN108765378AActive Publication Date: 2018-11-06UNIV OF SHANGHAI FOR SCI & TECH
7 Cites 19 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF SHANGHAI FOR SCI & TECH
Publication Date
2018-11-06

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a machine vision detection method for a workpiece contour flange protrusion based on G-code guidance. The specific object is to detect the workpiece contour flange protrusion.The method comprises the steps that the transformation relation between workpiece coordinates and image coordinates is analyzed and inferred; an image region-of-interest is extracted under the guidance of a G-code contour in combination with the coordinate transformation relation, the processing method of mid-value filtering, image binarization and edge detection is performed on the extracted region-of-interest, and a workpiece contour edge is obtained; and a standard G-code contour is used as a benchmark to recognize and judge the edge protrusion, a minimum enclosing rectangle method is adopted to enclose the contour edge protrusion, and visual detection of the contour edge protrusion is realized. Through the machine vision detection method for the workpiece contour flange protrusion, starting point, ending point and height information of a feature segment of the workpiece contour flange protrusion can be effectively recognized.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a machine vision detection method, in particular to a machine vision detection method for workpiece contour burrs Background technique

[0002] Contour flash is inevitable in the manufacturing process of mechanical parts, which includes plastically deformed materials during cutting, abnormal protrusions of castings and forgings, residual materials extruded by welding, etc. The existence of contour flash will have a negative impact on the appearance quality, machining accuracy, assembly accuracy, etc. of the workpiece, thereby reducing the stability and reliability of the mechanical system. It is particularly important, but the prerequisite for removing flash is to first detect and locate the flash. The current method of flash detection is mainly to measure the flash with a vernier caliper and a flat micrometer, or to roughly locate the flash with the naked eye. However, the diversity and randomness of the flash protrusions mak...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More