Method for positioning and controlling assembling and disassembling of bending die based on computer vision system

Abstract

The invention relates to a method for positioning and controlling assembling and disassembling of a bending die based on a computer vision system. The method comprises the computer vision system and the steps of control operation, and cameras are placed right in front of a bending machine and a die library respectively. A bending machine with the length of 2m is take as an example, cross-shaped machine tool locators are attached to the same bending die hydraulic clamping strip at intervals of 20cm; a die identifier is attached to the center of each die; a master control system sends a die image acquisition instruction to a camera module, the cameras shoot and return an image to a database, and corresponding relations between different identifiers and the dies are stored in the database. animage recognition algorithm is adopted to calculate the positions of the bending die needing to be disassembled and the bending die needing to be assembled on the bending machine tool and in the dielibrary, and calculate the angle needing to be rotated next and the translation amount according to the angle and the position of a product in a shooting position; a mechanical arm places the productaccording to the calculation result; and after the mechanical arm accurately places the product according to the instruction, the bending success rate is increased.

Description

technical field [0001] The invention relates to the field of vision technology, in particular to a method for positioning and controlling the loading and unloading of bending molds based on a computer vision system. Background technique [0002] Bending machine is the key equipment for high-precision bending of high-strength plates in industries such as automobiles and shipbuilding. In order to make the bent sheet well meet the requirements of the forming angle, it is necessary to quickly and accurately obtain the bending angle of the sheet in a complex background environment. The bending of sheet metal is an important processing method in the sheet metal processing industry. As an important carrier for sheet metal forming, bending machines have been widely used in sheet metal processing. With the continuous improvement of industrial production technology and processing technology, people put forward higher and higher requirements for the accuracy of sheet forming angle. T...

AI Technical Summary

Problems solved by technology

Therefore, accurately detecting and controlling the bending angle of the workpiece is of great significance for improving the quality and production efficiency of the bending of the workpiece. The traditional methods of measuring the angle include: mechanical measurement method, electromagnetic measurement method, optical measurement method and photoelectric measurement method. These methods have the limitations of low measurement accuracy, insufficient real-time performance, and inability to implement non-contact measurement.

The principle of the mechanical measurement method is simple and easy to understand, but this method has disadvantages that cannot be ignored, that is, the me

Images