53 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 invention relates to a dental implant structure of a horizontally moving abutment and a dental crown, which is characterized in that an inner multi-square concave part is arranged at the center above an implant, an inner hole is formed in the inner multi-square concave part, a multi-prism lower half part matched with the inner hole is arranged in the inner hole, an implant screw hole is formed in the bottom of the inner hole, the multi-prism lower half part and the multi-prism upper half part are respectively a regular multi-prism body and a multi-prism cone, and the dental crown is adhered to the periphery of the abutment. The center part of the lower end of the abutment is provided with a concave part matched with the polygonal cone, the center position of the polygonal cone is provided with a polygonal screw hole which is communicated up and down, the upper end of the dental crown is provided with a fixing hole, and a fixing wire passes through the fixing hole, the through hole, the polygonal screw hole and the implant screw hole from top to bottom, so that the dental crown, the abutment, the polygonal cone and the implant are connected into a whole. The problems of existing tooth preparation, reduction of tooth gaps between tooth necks, prevention of food impaction, reduction of bad breath and the like can be solved, the service life of the implant tooth is prolonged, and the aesthetic property of the tooth is improved.

The present invention provides a motor retaining ring press machine, comprising: a frame, a lifting frame, a lifting device and a clamping mechanism; the clamping mechanism is arranged on the lifting frame, and the clamping mechanism includes a rotation drive assembly, a first gear, a second gear and two retaining ring clamping needles; the first gear and the second gear are both provided with a plurality of small teeth, and the first gear and / or the second gear are also provided with a plurality of large teeth, and the plurality of large teeth are located between two adjacent small teeth. The motor retaining ring press machine of the present invention uses the size difference between the large teeth and the small teeth to enable the large gear to spread the first gear and the second gear apart when the first gear and the second gear rotate, thereby driving the two retaining ring clamping needles to separate a slight distance from each other, so that the clamped retaining ring is spread apart by the two retaining ring clamping needles so that the retaining ring can be installed on the end cover, which makes the retaining ring easy to install and also helps to avoid the retaining ring from being easily damaged.

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 harmonic differential type small-tooth-difference speed reducer, and belongs to the field of machinery. The structure comprises an outer gear ring, a double-sided planetary gear ring, a sun gear and an eccentric circumferential cam, a double-sided planetary gear ring is adopted to be meshed with an outer gear ring and a sun gear at the same time under the constraint of a cam disc; the input shaft and the output shaft are in a strict speed reduction relation: under the condition that the outer gear ring is selected to be static, when the inner teeth of the double-sided planetary gear ring and the sun gear are meshed and roll for a circle, the angle corresponding to the tooth number difference value between the inner teeth and the sun gear is formed; when the outer teeth of the double-sided planetary gear ring and the inner teeth of the outer gear ring are meshed and roll for a circle, the double-sided planetary gear ring and the outer gear ring rotate by an angle corresponding to a tooth number difference value; numerical values of the two parties show an offset trend; the sun shaft or the outer gear ring can be selected to be static, so that the reduction ratio is larger than that of a small-tooth-difference mechanism meshed by a single gear, and the relation between the reduction ratio and the tooth height is not large; the device can be widely used in the machinery industry.

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 present invention discloses a generator rotor with stiffness compensation, belonging to the technical field of steam turbine generators. The rotor body is provided with axially variable cross-section ventilation auxiliary grooves, and the groove depth configuration is divided into two forms: either a groove section combination of an outer straight groove section, an inclined groove section, and an inner straight groove section, or a stepped groove section structure that decreases step by step from the outside to the inside along the axial direction; the surface of the large teeth is processed with crescent grooves corresponding to the ventilation auxiliary groove sections, and the depth of the crescent grooves is distributed according to the position of the ventilation auxiliary groove sections. The depth of the crescent grooves decreases as the depth of the ventilation auxiliary grooves decreases, and the crescent grooves corresponding to the outer groove sections are deeper than those corresponding to the inner groove sections. The present invention effectively solves the technical problem of the large difference in stiffness between large and small teeth at different cross-sectional positions of the rotor in the prior art, meets the actual demand for stiffness balance between large and small teeth, and is particularly suitable for the field of high-performance generators with strict requirements on stiffness uniformity.

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 utility model discloses a car door glass lifter which comprises a main body assembly and a connecting assembly, the main body assembly comprises a glass supporting plate, a guide plate, a gear and a rack, the guide plate is arranged on one side of the glass supporting plate, the gear is movably connected with one side of the guide plate, the rack is located on one side of the gear, and the rack is meshed with the gear. The trigger assembly is arranged on the rack and comprises a connecting piece and a trigger piece, the connecting piece is located on one side of the rack, and the trigger piece is located on the connecting piece. The rack has the advantages that the rack is formed by splicing the small tooth blocks, each small tooth block can be divided into two parts and can be combined at will, if a certain small tooth block is damaged, only the corresponding part needs to be replaced, the whole rack does not need to be replaced, and maintenance cost and difficulty are reduced.

The utility model relates to the field of saw blade processing and repair, and discloses a high-precision grinding device for bimetallic saw blades with special-shaped tooth grooves and small teeth, comprising a workbench, a driving motor is fixedly connected above the workbench, an elliptical plate is fixedly connected to the output end of the driving motor, another elliptical plate is fixedly connected to the middle of the output end of the driving motor, an elliptical track is provided on the corresponding sides between the two elliptical plates, a sliding rod is slidably connected between the two elliptical tracks, a connecting rod is fixedly connected to the middle of the outer wall of the sliding rod, a limited shaft rod is fixedly connected to the middle of the connecting rod, and an inclined sleeve is fixedly connected to one end of the connecting rod. In the utility model, the connecting rod is indirectly driven by the driving motor to reciprocate left and right at a uniform speed, so that the teeth of the meshing saw blade of the top rod move equidistantly and uniformly toward the grinding wheel under the restriction of the limited shaft rod, thereby achieving the effect of high-precision grinding.

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 present invention is a needle tooth housing single-tooth pusher tool, including a base, characterized in that a guide sleeve is fixedly connected to the base, a positioning disk is coaxially provided on the outside of the guide sleeve and passes through from top to bottom, the positioning disk rotates on the base, a connecting frame is vertically fixedly connected to the guide sleeve, the top end of the connecting frame extends out of the top end of the positioning disk and is fixedly connected to a horizontal guide top seat, and a locking seat is installed on the guide top seat. The present invention ensures the size of the center circle of the needle tooth housing by providing a positioning pin 1 with a guide rod and a compression spring, two positioning pins 2 and a pusher positioning groove, as well as upper and lower locking blocks and a locking handle, so as to facilitate the locking of the needle tooth housing and realize the guiding and positioning of the pusher, meet the requirements of the processing accuracy of the needle tooth housing, have low cost, and meet the processing needs of needle tooth housings with a small number of processing teeth and a small production batch.

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 relates to a linear stand column assembly using a small tooth difference reduction gearbox, which comprises a stand column body, an installation cavity is arranged in the stand column body, a driving motor, a speed reducer and a lifting rod are arranged in the installation cavity, the lifting rod is connected with the driving motor through the speed reducer, the speed reducer comprises a box body, and an outer gear ring is arranged in the box body. Inner teeth are arranged on the inner side of the outer gear ring, the outer gear ring is connected to the driving motor, the center of the outer gear ring and the output end of the driving motor are located on the same axis, the output end of the driving motor is connected with an eccentric shaft, the eccentric shaft is connected with a duplex reduction gear, and the side, away from the driving motor, of the duplex reduction gear is connected with an output sleeve used for being connected with a lifting rod. The eccentric shaft, the outer gear ring and the duplex reduction gear are matched with one another to decelerate the output end of the driving motor, and then motion and power are output outwards through the output sleeve. The utility model has the following advantages and effects: the overall aesthetic degree can be improved, and the occupied space of the linear upright post is reduced.

The invention discloses a generator rotor with rigidity compensation, and belongs to the technical field of steam turbine generators, a rotor body is provided with an axial variable cross-section ventilation auxiliary groove, and the groove depth configuration of the rotor body is divided into two forms: a groove section combination of an outer straight groove section, an inclined groove section and an inner straight groove section, or a stepped groove section structure which is gradually reduced step by step from outside to inside along the axial direction; and crescent grooves corresponding to the ventilation auxiliary groove sections are machined in the surfaces of the large teeth, the depths of the crescent grooves are distributed according to the positions of the ventilation auxiliary groove sections, the depths of the crescent grooves are decreased along with decreasing of the depths of the ventilation auxiliary groove sections, and the depths of the crescent grooves corresponding to the outer side groove sections are larger than the depths of the crescent grooves corresponding to the inner side groove sections. The technical problem that in the prior art, the rigidity difference between large teeth and small teeth at different section positions of a rotor is large is effectively solved, the actual requirement for rigidity balance between the large teeth and the small teeth is met, and the rotor is particularly suitable for the field of high-performance generators with the strict requirement for rigidity uniformity.

The present invention discloses a distributed K-H-V type involute small tooth difference joint module, which is applied to the joints of a serpentine robot arm. The joint module is composed of three sets of rotary drive units, a frame, an internal gear, and an external gear. During the transmission process, the eccentric shaft rotates to drive the internal gear to output a rotational speed, while the external gear moves horizontally. The three sets of rotary drive units are respectively installed in through holes that are equally spaced between the internal gear and the external gear. The rotary drive units use a small motor in conjunction with bearings, external gears, and internal gears, which improves the space utilization of the joint module. In addition, by reducing the number of transmission links, the power loss of the joint module is reduced, so that the joint module has the characteristics of high rigidity and large transmission ratio of the involute small tooth difference planetary gear transmission, while also having the characteristics of small size and high output efficiency.

The present invention discloses an efficient directional milling and drilling tool, which includes a drill bit body, an outer casing, a universal shaft assembly, and a positive displacement motor assembly. Cutting teeth are inlaid on the drill bit body. The positive displacement motor assembly is composed of a positive displacement stator and a positive displacement rotor. The upper part of the universal shaft assembly is fixedly connected to the positive displacement rotor, and the lower part is fixedly connected to the drill bit body. The present invention also provides a directional elbow, which is connected between the outer casing and the drill bit body. An internal gear structure is arranged inside the directional elbow. The universal shaft assembly is an eccentric shaft structure, and an external gear structure is arranged on its outside. Driven by the eccentric rotating shaft, the internal gear structure and the external gear structure form a planetary gear drive mechanism with a small tooth difference. The beneficial effect of the present invention is that the planetary gear drive mechanism with a small tooth difference can drive the directional elbow to rotate, thereby adjusting the direction of the drill bit body, achieving flexible adjustment of the directional direction, and realizing the purpose of efficient directional milling and drilling.

A steering device 1 comprises a pinion gear 31 having a helical gear and a rack bar 40 having a plurality of helical rack teeth 41 that engage with the pinion gear 31. The rack teeth 41 have a wide pitch part 46 in which a plurality of rack teeth 41 are disposed at a predetermined pitch and a narrow pitch part 45 in which a plurality of rack teeth 41 are disposed at a narrower pitch than the pitch of the rack teeth 41 positioned in the wide pitch part 46. The rack teeth 41 positioned in the wide pitch part 46 have a tooth thickness constant in the tooth width direction W. The rack teeth 41 positioned in the narrow pitch part 45 each have, in one surface in the tooth thickness direction T, a tooth thickness change part 42 in which end portions in the tooth width direction W have a smaller tooth thickness than a tooth thickness of the center in the tooth width direction W. Thus,　change in the steering resistance during steering can be suppressed without reducing the rigidity of the rack bar 40.

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.

The utility model discloses an aluminum boat for improving aluminum oxide plating leakage on the back of a solar cell, which comprises a bottom substrate, edge strips are arranged on two sides of the bottom substrate, and boat tooth components for fixing silicon wafers are arranged at the tops of the edge strips. The boat tooth assembly comprises a plurality of large boat teeth arranged on the side edge of the bottom base plate and a plurality of gap plates used for connecting every two adjacent large boat teeth, at least two protruding small teeth arranged side by side are installed at the top of each gap plate, and two grooves located in the two sides of each protruding small tooth respectively are formed in the top face of each gap plate. According to the utility model, the bulged small teeth are additionally arranged on the platform boat teeth formed by the large boat teeth and the gap plate, so that the two silicon wafers of double insertion are separated, the chip mounting risk is reduced, and the back surfaces of the two silicon wafers of double insertion are uniformly coated without skip coating.