10 results about "Entire tooth" patented technology

Apparatus and methods for endodontic treatment of teeth provide effective cleaning of organic material (such as pulp and diseased tissue) from the root canal system. In an embodiment, a compressor system generates high pressure liquid (e.g., water) that flows through an orifice to produce a high-velocity collimated jet of liquid. The high-velocity jet is directed toward a surface of a tooth, for example, an exposed dentinal surface, and impingement of the jet onto the surface generates an acoustic wave that propagates throughout the tooth. The acoustic wave effectively detaches organic material from dentinal surfaces and tubules. The detached organic material is flushed from the root canal system by the liquid jet and / or by additional irrigation.

The present invention relates to the field of mechanical processing technology, and specifically to a forming process for stepped and non-through toothed parts, in which the parts are subjected to three roll forming processes, in which the tooth roots, tooth tops and the entire tooth portion of the parts are processed in sequence, and then the stepped teeth and non-through teeth are processed. A roller forming structure with supplementary process characteristics obtained by simulation calculation and a final deep drawing and shaping structure are used to achieve stamping forming of stepped and non-through toothed parts. The manufacturing process is relatively simple, and the processing requirements for functional components are reduced, so that the manufacturing cost is lower than the existing process structure, and the overall service life is greatly improved.

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.

The present invention relates to the field of flaw detection technology, and discloses a flaw detection tool for planetary gears, comprising a main body, a connecting tube fixedly connected to the left side of the main body, and a button fixedly connected to the top inner wall of the main body. When the main body is started, the power transmitted to the electrode causes the electrode and a plurality of contact rods in the electrode to be magnetized. At this time, the current can act on the tooth top, tooth surface and tooth root of the tooth through the plurality of contact rods, so that the generated magnetic field can cover the entire tooth area, reducing the magnetic suspension on the tooth surface from flowing downward to the tooth root. Due to the contact between the electrode and the tooth surface, the magnetic field strength difference at the tooth top and the tooth root is large, resulting in a weak magnetic field at the tooth root and difficulty in driving the magnetic suspension at the tooth root to flow to the tooth surface to cover the tooth, resulting in the scar at the tooth root being difficult to display. This improves the comprehensiveness and accuracy of flaw detection while improving the detection efficiency of magnetic flaw detection.

The utility model discloses a tooth arrangement device, which relates to the field of mouth rehabilitation and comprises an upper pressing plate, a lower pressing plate is arranged below the upper pressing plate in parallel, threaded blocks are in threaded connection with the interiors of the upper pressing plate and the lower pressing plate, and a spring is movably connected between the two groups of threaded blocks. The interior of the upper pressing plate is rotationally connected with a first mounting rod through a ball shaft, and the interior of the lower pressing plate is rotationally connected with a second mounting rod through a ball shaft. By shifting and twisting the threaded rod, the first mounting rod and the second mounting rod which are in threaded connection with two sections of threads with different thread directions on the outer ring of the threaded rod can move in the opposite directions or away from each other, so that the distance between the two groups of pressing plates can be conveniently adjusted, and meanwhile, the upper pressing plate and the lower pressing plate can be subjected to angle adjustment change; when the spring is used for a long time and the elastic potential energy of the spring is weakened to influence the use of the whole tooth arrangement device, the threaded block is twisted to separate the threaded block from the first threaded groove, so that the spring can be replaced and mounted, and the service life of the whole tooth arrangement device is guaranteed.

The invention relates to an anti-shake control method and device for an electric drive assembly of a disconnected differential mechanism, and relates to the technical field of electric drive assembly control. The anti-shake control method comprises the steps that based on the vehicle speed, a first tooth leaning rotating speed and a second tooth leaning rotating speed smaller than the first tooth leaning rotating speed are set; determining a first target rotating speed and a second target rotating speed of a motor rotor shaft based on the first tooth leaning rotating speed, the second tooth leaning rotating speed and the differential rotating speed; and after the motor rotor shaft is controlled to operate for a set distance or set time at the first target rotating speed, gear leaning is completed at the second target rotating speed. As the second tooth leaning rotating speed is smaller than the first tooth leaning rotating speed, tooth leaning does not occur after the motor rotor shaft runs for a set distance or set time at the first target rotating speed, and at the moment, tooth leaning is completed at the second target rotating speed, so that shaking can be reduced, and compared with the whole tooth leaning process completed at the second target rotating speed, the used time is shorter, and the tooth leaning efficiency is improved. The problem that the use experience is affected in the prior art is solved.

The invention relates to the technical field of flaw detection, and discloses a flaw detection tool for a planet gear, the flaw detection tool comprises a main body, the left side of the main body is fixedly connected with a connecting pipe, and the inner wall of the top of the main body is fixedly connected with a button. When the main body is started, electric power transmitted to the electrode enables the electrode and the plurality of contact rods in the electrode to be magnetized, and at the moment, current can act on tooth crest tooth surfaces and tooth roots of the teeth through the plurality of contact rods respectively, so that a generated magnetic field can cover the whole tooth area; the situation that when the magnetic suspension on the tooth surface downwards flows to the tooth root, due to the contact between the electrode and the tooth surface, the magnetic field intensity difference at the tooth crest and the tooth root is large, the magnetic field at the tooth root is weak, the magnetic suspension at the tooth root is not easily driven to flow to the tooth surface to cover, and the scar at the tooth root is not easily displayed is reduced; the flaw detection comprehensiveness and accuracy are improved, and meanwhile, the detection efficiency of magnetic mark flaw detection is improved.

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.

The invention relates to the field of motor manufacturing, and discloses a jig for electrostatic powder coating of a motor iron core and an electrostatic powder coating method of the motor iron core, and the jig comprises an outer circumference shielding assembly sleeving the outer circumference of a yoke part and an inner circumference shielding assembly sleeving the inner circumference of a tooth part. The outer peripheral shielding assembly shields the yoke portion outer peripheral surface of the yoke portion and prevents the yoke portion outer peripheral surface from being coated with powder. The inner circumference shielding assembly shields the tooth part inner circumference surface of the tooth part and prevents the tooth part inner circumference surface from being coated with powder. The outer periphery shielding assembly and the inner periphery shielding assembly are spaced so that the tooth part side wall of the tooth part can be exposed for powder coating. The jig can be used for assembling a complete motor iron core, after the motor iron core is assembled by the jig, the motor iron core only needs to be assembled with the jig once in powder coating operation, and the side wall of the whole tooth part can be coated with insulating powder only through one-time powder coating. The technical problem that the powder coating efficiency is low due to the fact that an iron core needs to be split into iron core units before being clamped at present is solved.