2 results about "Entire tooth" patented technology

The application relates to an image detection method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring tooth image blocks corresponding to each tooth from a tooth image; inputting each tooth image block into a preset feature extraction model to perform feature extraction, to obtain features corresponding to each tooth image block; the features corresponding to the tooth image blocks comprise image features of the tooth image blocks and correlation features between the tooth image blocks; performing image detection on the tooth image according to the features corresponding to each tooth image block, to generate an image detection result of the tooth image. Compared with directly performing feature extraction on the entire tooth image, the method proposed in the application performs feature extraction based on tooth image blocks of each tooth, can improve the extraction accuracy of tooth features and correlation features between teeth, improve the detection effect of tooth lesions and tooth defects, and further improve the detection accuracy of various tooth defects such as tooth lesions and tooth defects.

This invention belongs to the field of mechanical manufacturing, specifically relating to a welding method for a spiral drum tooth seat of a coal mining machine. The invention proposes to first deposit an isolation layer on the welding bevel surface of the tooth seat before spot welding it to the spiral blades. Before depositing the isolation layer, the entire tooth seat is preheated in a furnace to prevent cold cracking in the heat-affected zone (HAZ) and reduce its embrittlement. After the deposit is completed, the weld toe is repaired using argon arc welding, and then slowly cooled to room temperature. Argon arc welding is then used to optimize the geometry of the weld toe and reduce the stress concentration factor. After cooling to room temperature, the tooth seat is then spot welded to the spiral blades without further preheating. This method eliminates the need for on-site flame preheating during the welding of the tooth seat and spiral blades, completely eliminating the associated safety risks. The batch preheating of the tooth seats before spot welding ensures thorough preheating and high economic efficiency, effectively preventing cold cracking in the HAZ and reducing its embrittlement.