32 results about "Small teeth" patented technology

The utility model relates to the field of raft fishing wheels, in particular to a bidirectional clutch structure of a raft wheel. A bidirectional clutch structure of a raft wheel comprises a main body cover and a main body, the main body cover is sleeved on the main body, a rocker arm transmission system is arranged on the main body cover and the main body, the rocker arm transmission system comprises a large tooth, the large tooth is meshed with a small tooth, a tooth sleeve is sleeved below a tooth body of the small tooth, an annular clamping groove is arranged on the upper portion of the tooth sleeve, and the middle of the main body cover is hollow. A circular groove is formed in the inner side wall body of the hollow part, a ratchet wheel body is arranged on the circular groove, a clamping column is arranged at the top end of the ratchet wheel body, the clamping column is clamped in the circular groove, and an upper pressing body and a lower pressing body are annularly arranged on the lower portion of the ratchet wheel body. The clutch structure has the advantages that the clutch shifting button drives the clutch shaft to rotate, the clutch shaft rotates the ratchet wheel body to rotate, the clutch disc is squeezed downwards, the clutch disc receives pressure of the pressure spring, acting force is generated on the annular clamping groove, the clutch effect is achieved, the clutch shifting button rotates back, the clutch disc can reset, and the clutch structure is operated in a two-way mode.

The utility model provides a kind of low vibration, low noise stepping motor, including stator lamination and rotor lamination, the inside of stator lamination and rotor lamination is provided with the small tooth of improving electromagnetic coupling efficiency, the tooth slot ratio, tooth width, tooth shape and the included angle of adjacent small tooth of small tooth are all optimized improvement, the inside of stator lamination and rotor lamination is all increased and is set, it is related to the technical field of stepping motor.The utility model is designed by the tooth slot ratio, tooth width, tooth shape, the included angle of adjacent small tooth, the riveting point of stator lamination eight big poles on small tooth, the tooth slot ratio, tooth width, tooth shape, the riveting point of rotor lamination on small tooth, design optimization is carried out, reduce high harmonic, reduce tooth slot torque, make motor low-speed operation stability better, vibration and noise are smaller.

1. The name of the design product: the main body of the female head of a cord stopper. 2. The use of the design product: the overall use of the product is: the design product is the female head of a cord stopper, which is used to cooperate with the corresponding male head of a cord stopper to tighten and clasp the cord extending therethrough with a small tooth, which can be used on shoes and clothes. The partial use of the product is: used as the main body of the female head of a cord stopper. 3. The design points of the design product: the shape of the part shown by the solid line in each view of design 1 and the part not coated with dark green in each view of design 2. 4. The picture or photo that best indicates the design points: design 1 perspective view 1. 5. Design 1 is designated as the basic design. 6. Other circumstances that need to be explained: the dashed line in each view of design 1 and the part coated with dark green in each view of design 2 are shown for illustration and do not constitute the part claimed in the design application.

The utility model provides a novel involute small-tooth-difference speed reducer, which relates to the technical field of transmission devices and is characterized in that three eccentric wheels are arranged along the axial direction of an eccentric cam shaft, and an outer gear disc A, an outer gear disc B and an outer gear disc C are respectively sleeved on the corresponding eccentric wheels and are uniformly distributed at an angle of 120 degrees in the eccentric direction; an involute inner gear ring is machined on the inner wall of the shell and connected with outer teeth of the outer gear disc A, the outer gear disc B and the outer gear disc C in a meshed mode to form a small-tooth-difference meshing pair. The novel involute small-tooth-difference speed reducer has the beneficial effects that the novel involute small-tooth-difference speed reducer is mainly meshed with the inner gear through three groups of outer gear discs which are distributed at 120 degrees, so that the load is uniformly distributed, the bearing capacity is improved, and three supporting meshing points are designed, so that the effects of dispersing the force, reducing the deformation of a transmission system and greatly improving the torsional rigidity are achieved; in addition, the speed reducer is provided with the two crossed roller bearings, overturning load force can be borne at the same time, deformation caused by overturning bending moment is reduced, and the overall overturning rigidity is improved.

The utility model belongs to the technical field of automobile seats, and particularly relates to an automobile monotonous seat angle adjuster, a seat and an automobile, the angle adjuster comprises a guide plate, a plurality of small teeth are installed on the guide plate in a sliding mode in the radial direction; a top pressing block is fixedly mounted on the unlocking square column, and an unlocking piece is mounted on the top pressing block; the jacking blocks are positioned on the inner sides of the small teeth; the large toothed plate is rotationally installed on the guide plate, a cavity is formed in the large toothed plate, the unlocking piece, the small teeth and the jacking block are all located in the cavity, and a plurality of clamping teeth meshed with the small teeth are arranged on the inner wall of the large toothed plate in the circumferential direction; an elastic structure is arranged between the guide plate and the jacking block; the free end of the unlocking square column penetrates through the guide plate to be connected with a return spring, and the free end of the return spring is hung on a hanging point of the lower seat basin connecting plate. The utility model aims to solve the problem that the adjusting function of a seat backrest fails due to the tooth sliding phenomenon during locking caused by insufficient elasticity of an elastic structure in an existing angle adjuster.

This utility model is a self-balancing gearbox with small tooth difference, which includes at least two axial revolving gears and an eccentric counterweight. The number of teeth of the axial revolving gears B is different, resulting in different centrifugal forces. By adding a matching eccentric counterweight T to the existing structure, and providing specific gearbox structural requirements and installation methods, a more compact structure and smoother operation are achieved.

1. Name of this design: Body of the male head of the rope stopper. 2. Application of this design: The overall application of this design is as follows: This design is a male head of a rope stopper, which is used to cooperate with the female head of a corresponding rope stopper to tension and clamp the rope extending through it with small teeth. It can be used in footwear and clothing. The product is used in a specific application as the main body of the male connector of a rope stopper. 3. The key design features of this product are the shapes of the parts shown by solid lines in each view of Design 1 and the parts not covered by dark green in each view of Design 2. 4. The picture or photo that best illustrates the key design points: Design 1 3D diagram 1. 5. Design 1 is designated as the basic design. 6. Other matters requiring explanation: The dashed lines in the views of Design 1 and the parts covered in dark green in the views of Design 2 are for illustrative purposes only and do not constitute part of the protection claimed in this design application.

The utility model relates to the technical field of blank pressing and oil making, in particular to a blank pressing machine for oil making. According to the blank pressing machine for oil production, a first through groove and a second through groove are formed in the side walls of the two sides of a blank pressing machine body in the length direction. The first fixing block is arranged in the first through groove, and the second fixing block is arranged in the second through groove. A first gear is arranged at one end, penetrating through the first fixing block, of the rotating shaft of the first blank pressing roller. A duplicate gear is arranged at the position where one end of a rotating shaft of the second blank pressing roller penetrates through the second fixing block. When the first fixing block and the second fixing block are located at the first horizontal position, the first gear is meshed with the small teeth in the duplicate gear. And when the first fixing block and the second fixing block are located at the second horizontal position, the duplicate gear is adjusted, and the first gear is meshed with the large teeth in the duplicate gear. The blank pressing machine solves the problems that an existing blank pressing machine can only press blanks with the fixed thickness and cannot meet the requirements for different oil plants and different oil making processes, and the suitable thicknesses of the required blanks are different.

The utility model discloses a positioning vehicle driving small tooth anti-falling device, belongs to the technical field of mechanical driving degradation prevention, and is used for realizing a positioning vehicle driving small tooth falling early-stage trend alarm function and a positioning vehicle driving small tooth sudden falling protection function. The device comprises a lug plate, a support, a tray, a bearing, a base, a clamping plate, a small pigment ball and a distance detection limiting switch, the lug plate is composed of two right-angle-shaped fixing plates, the lug plate is connected with the upper end of the support, the outer side of the base is in a disc shape, and a plurality of through holes are formed in the outer side of the base. In addition, the device has a unique dual-alarm mechanism, namely electrical and mechanical dual-alarm, also has a leveling function and a resetting function, is creative and novel, is high in reliability, and has a relatively high popularization value.

The spiral energy storage spring and the compression spring are integrated inside, or the spiral energy storage spring, the magnetic spring and the plane spring are integrated inside, so as to realize energy storage and passive flexibility, reduce the driving consumption and meet the requirements of driving agility. [Solution] A flexible joint based on an elastic element is disclosed, including an involute small tooth difference reducer, a spiral energy storage spring, and a flexible output module / composite flexible output module. The involute small tooth difference reducer uses only an eccentric input shaft, a pair of involute internal tooth rings, and involute planetary gears to realize involute planetary gear oscillation and rotation. The power output of the output platen is transmitted through the interaction of the column pin and the first column pin operating hole of the involute planetary gear or the second column pin operating hole of the output platen. The precision requirements can be easily met by simply using a pair of gears meshing, the axial dimension is compact, and the pair of gears use an involute tooth profile, so manufacturing costs are low.

The present application relates to the field of robot technology, and discloses a small volume and large torque robot hip gear transmission mechanism, comprising a shell, an input shaft and an output shaft installed above the shell, a parallel helical tooth reduction mechanism, an eccentric small tooth difference reduction mechanism and a planetary load sharing reduction mechanism arranged in series along a power transmission path inside the shell, and a lubricating oil circuit arranged in the shell. The three-stage series reduction structure of the parallel helical tooth reduction mechanism, the eccentric small tooth difference reduction mechanism and the planetary load sharing reduction mechanism enables the transmission mechanism to realize step-by-step speed reduction and torque increase, and the large speed ratio characteristic of the eccentric small tooth difference is matched with multi-stage transmission to obtain stable output torque in a small installation space, effectively solving the problems of large volume and poor space adaptability of the traditional hip reducer.

The utility model discloses an extrusion forming die for an aluminum profile of a driving device, which comprises an upper die and a lower die, a die core is arranged at the bottom of a connecting column protruding from the middle of the bottom surface of the upper die, and a plurality of flow dividing holes which are circumferentially spaced and vertically penetrate through the upper die are formed in the periphery of the connecting column; a plurality of forming holes are formed in the peripheral wall of the mold core in an inwards-concave mode and penetrate through the lower end face of the mold core, and a forming wall is arranged between every two adjacent forming holes. The forming holes comprise larger screw column forming holes and smaller tooth forming holes; a flow guide opening is formed in the position, corresponding to the screw column forming hole, of the joint of the connecting column and the mold core in a concave mode, and the flow guide opening is inwards concave and downwards extends to communicate with the screw column forming hole. The width of the forming wall is larger than that of the tooth forming hole, and a mold core flow stopping block is arranged on the forming wall in an outward protruding mode. Therefore, the structural strength of the screw column of the extruded aluminum profile can be effectively improved.

The utility model discloses a small-tooth-difference speed reducer, and belongs to the technical field of speed reducers. The small-tooth-difference speed reducer comprises an eccentric shaft. The at least two external gears are arranged on the eccentric shaft; the flange assembly comprises an outer flange and a supporting flange which are located on the two sides of the outer gears respectively, and the outer flange, the at least two outer gears and the supporting flange are connected through pin shafts; wherein a first gasket is arranged between every two adjacent outer gears, and second gaskets are arranged between the outer gears and the outer flange and between the outer gears and the supporting flange. Compared with the prior art, the speed reducer with the small tooth difference is good in damping performance, and the reliability and the service life of equipment can be effectively improved.

The invention discloses a large and small tooth surface local deformation identification system and method based on image processing, and belongs to the technical field of tooth surface local deformation identification. A large and small tooth surface local deformation identification system based on image processing comprises an image acquisition module used for acquiring local image data of a large and small tooth surface from front and side angles in real time, an image analysis module used for performing multi-category integration on images, screening high-quality images, performing noise reduction and enhancement processing and graying the images, and a large and small tooth surface local deformation identification module used for identifying the large and small tooth surface local deformation. And then gear contour key points are extracted to establish an absolute coordinate system, the image processing module compares a received image with original accurate image data to obtain qualified and unqualified image data, and the information output module transmits the qualified and unqualified image data to a display device. According to the large and small tooth surface local deformation recognition system based on image processing, the tooth size and tooth surface local deformation can be quickly recognized in mass production through the system.

The invention discloses a tooth detection system and method and a storage medium, and the detection system comprises a feature extraction module, a feature projection module, a feature extraction module, a feature extraction module, a feature extraction module and a feature extraction module which are connected in sequence, the hybrid encoder module is connected to the feature projection module and is used for performing enhancement processing on the multi-scale features with the unified dimensions and outputting enhanced features; and the Transform decoder module is connected to the hybrid encoder module and is used for receiving a fixed number of object queries and outputting a tooth detection result set through iteration refinement. According to the method, detail expression and geometric consistency of the small teeth are improved, favorable bottom-layer feature support is provided for improving dependence on global context on a fuzzy sample so as to eliminate local ambiguity, and meanwhile, the adjacent teeth are more separable in query and more stable in positioning aiming at an anisotropic structure that the teeth are mainly arranged along a dental arch in the horizontal direction.

The utility model discloses a quick assembling and disassembling fixture for a milling machine and relates to the field of milling machine fixtures. The clamping block angle adjusting device comprises a mounting plate and a base, a clamping seat is arranged at the top of the base, a second gear is arranged in the clamping seat, a first gear is meshed with the outer side of the second gear, and an inner hexagonal block is arranged at the top of the first gear. When the clamp body rotates to a proper angle, the fixing of the rotating disc is released, the hexagonal wrench is used for rotating the inner hexagonal block to drive the first gear to rotate, the second gear is also driven due to meshing of the gears, then the rotating disc and the clamp body rotate together, and after the clamp body rotates to the proper angle, the abutting bolt is screwed again to fix the rotating disc to complete angle adjustment. The second gear with the large tooth diameter is driven by the first gear with the small tooth diameter, the speed reduction effect is achieved, the adjusting accuracy is improved, and instability caused by direct manual operation is avoided.

The grinding device comprises an adjusting mechanism, the adjusting mechanism comprises a driving piece, a cam assembly and a sliding piece, the cam assembly is connected with the output end of the driving piece, the cam assembly is provided with a first protruding part and a second protruding part, the sliding piece is provided with a first impact part and a second impact part, and the first impact part and the second impact part are arranged on the driving piece. The first impact part and the second impact part are arranged in the radial direction of the sliding piece, and the first impact part and the second impact part are oppositely arranged; when the driving piece drives the cam assembly to rotate, the first protruding part can push the first impact part or the second protruding part can push the second impact part, so that the sliding piece is driven to do reciprocating linear motion. And the grinding mechanism is mounted on the sliding piece. The grinding machine applies the grinding device, the grinding wheel axle point can be rapidly adjusted to be equal to the saw blade base plane in height, and the situation that saw teeth are large and small is reduced.

A seat turntable mechanism and a vehicle are provided. The seat turntable mechanism includes a movable disc (1) and a fixed disc (2), which are limitedly connected in an axial direction and are rotatable relative to each other in a circumferential direction. The seat turntable mechanism further includes a core member (3), a limiting member, and a drive component (4). In the core member (3), an inner toothed plate (31) is provided with an inner gear ring (a), an outer toothed plate (32) is provided with an outer gear ring (b), an eccentric component, the inner gear ring (a), and the outer gear ring (b) forms a small teeth difference planetary gear transmission mechanism, and a gap elimination component is configured to eliminate gaps between each component. The drive component (4) is in transmission connection with the eccentric component. The limiting member is configured to limit self-rotation of the outer toothed plate (32), so as to allow the outer toothed plate (32) to perform circular motion. The outer toothed plate (32) drives the inner toothed plate (31) to rotate. The inner toothed plate (31) is fixedly connected to the movable disc (1). According to the present application, the core member is used as a rotating joint, and the limiting member eliminates the eccentric movement of a seat, so that the free rotation gap of the turntable mechanism is eliminated, and the riding comfort is improved.

The utility model belongs to the technical field of fixed clamp, concretely relates to a novel adjustable intestinal obstruction catheter external fixed clamp, including catheter clamp and the adjusting rope of installation on catheter clamp, and the catheter clamp includes press type elastic reset piece, and the adjusting rope is linked with press type elastic reset piece, and the both ends of press type elastic reset piece are fixedly connected with the clamping block, and the both sides of press type elastic reset piece are fixedly connected with the anti -skid convex, the side of two clamping blocks is set up with the arc -shaped groove, and the sidewall of two arc -shaped grooves is fixedly connected with a plurality of small teeth, and the adjusting rope includes the elastic cord that is connected with press type elastic reset piece, and the outside of elastic cord is installed with spring buckle, the utility model can effectively reduce the phenomenon that the catheter drops out, and can adjust the fixed point according to the length of the intestinal obstruction catheter into the nasal cavity and move, convenient to use, simple operation reduces the nurse fixed operation time.

The utility model relates to the technical field of wireless network fixing devices, and discloses a wireless network base station fixing device, which comprises a network base station main body and an antenna plate, a fixing mechanism is arranged on the network base station main body, an adjusting mechanism is arranged on the fixing mechanism, the fixing mechanism comprises a rotating rod, and the rotating rod is connected with the antenna plate. The rotating rods are rotatably connected to the inner walls of the left side and the right side of the network base station body through bearings, adjusting plates are fixedly connected to the rotating rods, fixing plates are fixedly connected to the outer walls of the bottoms of the adjusting plates, arc-shaped teeth are slidably connected to the inner walls of the rear sides of the fixing plates, and small teeth are rotatably connected to the inner walls of the bottoms of the arc-shaped teeth. And the outer wall of the right side of the arc-shaped tooth is fixedly connected with a compression spring. According to the utility model, the arc-shaped teeth, the small teeth and other structures are arranged, so that the problem that the transition efficiency of the wireless network base station is affected due to the fact that the operation is relatively tedious and the transition efficiency of the wireless network base station is affected as tools are required to be used and screw connecting components are required to be dismounted and replaced or a worker carries the wireless network base station for transition is solved.

The utility model relates to the technical field of cutting tools, and discloses a saw blade with large and small protective teeth, which comprises a saw blade base body serving as a main body of the whole saw blade, a support used for the saw blade, a cutting blade arranged on the outer wall of the saw blade base body, a stabilizing assembly used for cutting a workpiece, and a cutting assembly arranged on the outer wall of the saw blade base body. The stabilizing assembly is arranged in the saw blade base body and used for keeping the saw blade base body stable, and the cutting assembly is arranged in the cutting blade and used for accurately cutting a workpiece. When a workpiece is polished, the saw blade base body is stabilized through the small fixing pipe and the large fixing pipe, then cutting is carried out through the cutting blade, meanwhile, main body cutting is carried out through the large protection teeth, auxiliary cutting is carried out through the small protection teeth, the roughness of the cutting face is reduced, vibration and burrs in the cutting process are reduced, and the cutting efficiency is improved. And the flatness and smoothness of the cutting surface are improved, and the overall neatness during grinding is kept through the water holes.

The utility model relates to the technical field of air pumps, in particular to an air pump machine core which comprises an air cylinder, a piston, a gearbox, a large shaft, a large tooth, a small tooth, a motor and a bearing, the air cylinder is slidably connected with one end of the piston, the other end of the piston is rotatably connected with the edge of the large tooth, the middle of the large tooth is in transmission connection with the gearbox, and the large shaft and the bearing are arranged between the large tooth and the gearbox. A center hole in the large tooth is in close-fitting connection with one end of a large shaft, the other end of the large shaft is in close-fitting connection with a center hole of a bearing, a center hole in the gearbox is in close-fitting connection with the outer side of the large shaft, a small tooth is arranged on a rotating shaft of the motor, and the small tooth on the rotating shaft of the motor is meshed with an annular tooth on the edge of the large tooth. According to the utility model, the guide bone and the stop block are arranged, so that the assembly is easy and simple, one end of the large shaft is in close-fitting connection with the large tooth, and the other end of the large shaft is in close-fitting connection with the center hole of the bearing, so that a fastening screw is saved, the cost is saved, and a station is saved.

1. Name of the product in this design: Body of the rope stopper. 2. Application of this design: The overall application of this design is as follows: This design is a rope stopper for tensioning and securing ropes and belts. It can be used in footwear and clothing. The rope or belt can extend through both sides of the rope stopper and be clamped by the small teeth inside. The product is used in certain applications as the main body of a rope stopper. 3. The key design features of this product are the shapes of the parts shown by solid lines in each view of Design 1 and the parts not covered by dark green in each view of Design 2. 4. The picture or photo that best illustrates the key design points: Design 1 3D diagram 1. 5. Design 1 is designated as the basic design. 6. Other matters requiring explanation: The dashed lines in the views of Design 1 and the parts covered in dark green in the views of Design 2 are for illustrative purposes only and do not constitute part of the protection claimed in this design application.

This invention discloses a dual-channel linear displacement sensor, comprising: a fine channel primary component, a coarse channel primary component, and a secondary iron core disposed between the two. Multiple secondary small teeth and an arc-shaped protrusion are respectively provided on both sides of the secondary iron core, representing the multi-pole and single-pole pairs of the linear displacement sensor, respectively. Therefore, this linear displacement sensor combines a multi-pole linear displacement sensor and a single-pole linear displacement sensor, and the coarse and fine channels share a single secondary iron core. This results in a simpler structure, reduced electromagnetic interference, high detection accuracy, and the ability to obtain absolute linear position. Furthermore, it exhibits strong environmental adaptability, a simple structure, and a lower price.

The invention relates to a small-tooth-difference cycloidal ball speed reduction method which comprises the following steps: S1, inputting power through double eccentric shafts, and driving a first movable disc and a second movable disc with the phase difference of 180 degrees to perform compound motion; s2, first-stage speed reduction is formed through the composite motion of the first movable disc; s3, through pure rolling of the movable disc steel balls between the ball socket of the first movable disc and the ball socket of the second movable disc, transferring and balancing movement between the two movable discs; s4, the steel balls of the output disc are made to roll purely between the hypocycloid wave arc grooves of the second movable disc and the epicycloid wave arc grooves of the output disc through the compound motion of the second movable disc, and second-stage speed reduction is formed; and S5, the decelerated power is transmitted to an output flange through an output disc to be output. The transmission mechanism has the advantages that the steel balls are restrained to roll in the inner cycloid groove and the outer cycloid groove at the same time, the return difference of traditional gear meshing is fundamentally eliminated, absolute precise positioning in the transmission process is ensured, and the strict requirements of robot joints, precise machine tools and the like are met.

1. The name of the design product: packaging box (small tooth veneer packaging box). 2. The use of the design product: for storing dentures. 3. The design features of the design product: in shape. 4. The picture or photo that best indicates the design features: perspective view.

The present application relates to the technical field of drilling equipment, and discloses a PDC drill bit with double-order distribution of large and small teeth, which comprises a drill bit body, a main blade, a secondary blade, a first main cutting tooth and a second main cutting tooth, and at least two main blades are uniformly distributed on the upper end of the drill bit body in a circumferential direction. The present application has reasonable and compact structure, the distribution order of the main cutting tooth is opposite to that of the secondary cutting tooth, so that the cutting amount and cutting force of the main cutting tooth and the secondary cutting tooth can be balanced respectively, which is beneficial to the workload balance and life balance of the cutting tooth, the main cutting tooth and the secondary cutting tooth are alternately arranged, the advantages of the main cutting tooth and the secondary cutting tooth are complementary, the superiority of the double-order distribution is maximally exerted, and the PDC drill bit has good stability, durability and high mechanical drilling speed in difficult strata, so that the stratum adaptability of the drill bit can be obviously improved, the soft stratum and the hard stratum can be drilled, and the ability of the drill bit to drill through the interlayer can be enhanced.

The utility model relates to the technical field of fillers, and discloses a small tooth angle filler with an improved structure, which comprises a plurality of groups of first assembly plates and second assembly plates, the first assembly plates and the second assembly plates are the same in appearance and are arranged in a staggered manner, each first assembly plate comprises a connecting piece, and the connecting pieces are connected with the first assembly plates and the second assembly plates. Through holes are evenly formed in a body of the connecting piece, auxiliary strips are connected to the front side and the rear side of the connecting piece, water flow can flow between the first splicing plate and the second splicing plate through the through holes, liquid is mixed, and the contact efficiency of the liquid and air is improved; the auxiliary strips are arranged to block water flow passing through the surface of the connecting piece, so that the water flow is separated from the connecting piece, the water flow advances on the first splicing plate and the second splicing plate in a staggered mode, the contact between the water flow and air is improved, and the using efficiency of the device is indirectly improved.

This application discloses a method, apparatus, device, medium, and product for detecting dental defects in children, relating to the field of image processing technology. The method includes preprocessing an acquired panoramic radiograph of a child to be detected to obtain a standard image of a child's teeth; extracting local and global feature vectors from the standard image of the child's teeth, and then weighted and fused the extracted local and global feature vectors to obtain a fused feature image of the teeth; extracting geometric anchor points and calibrating the coordinates of each tooth region based on the fused feature image of the teeth to obtain the positional information of each tooth; matching the defect type of a single tooth region according to the fused feature image of the teeth and the positional information of each tooth to obtain a defect identification result; and generating a detection result based on the defect identification result and the positional information of each tooth. This application improves the detection accuracy and positioning precision of permanent and deciduous teeth in children on panoramic radiographs, avoiding missed detection of small teeth.

This application discloses a shear-resistant composite toothed connection structure and test fixture, belonging to the field of composite material structure technology. The connection structure is made of unidirectional composite material tape or fabric and includes: a clamping area, a transition area, and a toothed connection area arranged sequentially along the axial direction. The toothed connection area has multiple levels of shear teeth, with the tooth height of the multiple levels of shear teeth gradient distribution from large to small along the axial direction. The shear teeth are designed with smaller tooth height and tooth root width to reduce the shear contact area of ​​a single tooth. This shear-resistant composite toothed connection structure and test fixture ensures the tensile strength of the toothed connection structure specimen and guarantees that failure occurs at the tooth root shear surface.