12 results about "Small tooth" patented technology

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.

The application discloses a large internal ratchet wheel machining method, which comprises the following steps: S1, rotating a machine tool B shaft; S2, tooling a ball cutter (4) installed on the machine tool B shaft accessory with any two points on a large tooth surface of a tooling slot and any one point on a small tooth surface respectively to obtain coordinate values of each tooling point in a cutter tip coordinate system; S3, according to the intersection of a tooth root virtual circle under the cutter tip coordinate system and the connecting line of the two tooling points on the large tooth surface, the intersection point constitutes the coordinate values of a tooth root vertex in the cutter tip coordinate system, and the coordinate values of the tooth root vertex in the cutter tip coordinate system and the offset of the cutter tip coordinate system relative to a part coordinate system are obtained according to a trigonometric function relationship; and S4, the offset is used for compensating the cutter tip position deviation generated by the rotation of the machine tool B shaft. The technical effect of the application is that qualified large internal ratchet wheels are machined by compensating the cutter tip position deviation and the part tooth slot phase deviation, qualified large internal ratchet wheels are machined on a machine tool by using a common ball cutter, and production cost is saved.

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 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.

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.

This utility model relates to the technical field of hot grinding mills, and particularly to a toothed structure for a grinding disc of a MDF hot grinding mill. The grinding disc includes an inlet area and an outlet area on its outer side. A cemented carbide plate is mounted on top of the grinding disc, and a flow guide groove is formed above it. Composite tooth tips are mounted on the upper surface of the grinding disc, and a connecting groove extends through the upper surface. A connecting rod is provided inside the connecting groove. With this toothed structure, material enters from the inlet area, undergoes coarse crushing by the high pitch and large tooth spacing of the gradually tapering teeth and the thrust of the helical teeth, and then moves to the outlet area for fine grinding with low pitch and small tooth spacing, improving accuracy. The composite tooth tips provide primary shearing, the tooth root reinforcing ribs stabilize and extend lifespan, the chip removal groove prevents fiber adhesion, the flow guide groove accelerates flow, the hollow design improves heat dissipation, and the vibration is transmitted and damped by a damping ring and spring, reducing equipment wear.

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 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 invention discloses a wheel speed signal self-calibration method based on spoke topology prior, belonging to the field of signal correction technology. By introducing spoke topology prior to generate an ideal pulse timing template, the method performs distribution deviation detection on the measured pulse sequence to accurately identify abnormal pulse segments. Based on this, it limits the candidate time interval for missing pulses. Furthermore, by combining the extraction of variation features of the original magnetic response signal and rhythm consistency constraint screening, the position of pulses not identified by the normal decision chain is structurally reconstructed. This enables effective correction of pulse distortion and pulse missingness to address the magnetic field distortion problem caused by the small number of spokes and the small tooth groove depth-to-width ratio. It avoids deviations or jumps in wheel speed calculation results, improves the accuracy of speed statistics, and enhances the stability and reliability of the vehicle control strategy.

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.