420 results about "Rooted tooth" patented technology

A seat adjustment mechanism includes a first component and a second component movable relative to the first component. A drive mechanism is drivingly connected to the second component for moving the second component relative to the first component. The drive mechanism includes a drive motor drivingly connected to a first gear member having conical involute teeth. A second gear member includes conical involute teeth in meshing engagement with the conical involute teeth of the first gear member. The conical involute teeth have a tapered tooth thickness, a tapered root and a tapered outside diameter.

The invention discloses a mutual inductor iron core, a mutual inductor coil and a current transformer, and belongs to the technical field of current transformers, the mutual inductor iron core comprises a protective shell, a core body and a limiting assembly, the protective shell is provided with an annular first containing cavity, and the core body is located in the first containing cavity; the inner top wall and the inner bottom wall of the first containing cavity are each provided with a plurality of first triangular teeth which are evenly distributed in the circumferential direction in a protruding mode, the limiting assembly comprises an elastic structure and two annular limiting plates, the two limiting plates are located on the two axial sides of the core body correspondingly, and the surfaces of the limiting plates are each provided with a plurality of second triangular teeth which are evenly distributed in the circumferential direction in a protruding mode; the inclined face of the second triangular tooth is attached to the inclined face of the first triangular tooth, the elastic force of the elastic structure is used for forcing the two limiting plates to rotate relative to the protective shell in the circumferential direction, and the inclined face of the second triangular tooth is partially attached to the inclined face of the first triangular tooth, so that an axial gap is formed between the tooth crest of the second triangular tooth and the tooth root of the first triangular tooth. The structural stability and the position stability of the core body can be improved.

The invention provides an assembling and meshing precision adjusting method for a harmonic reducer, and relates to the technical field of reducers, the harmonic reducer comprises a flexible gear and a rigid gear with specific tooth profiles, and the tooth profile of the flexible gear comprises a first arc tooth top and a first arc tooth root; the tooth profile of the rigid gear comprises a second planar tooth top, transition arcs located at the vertex angles of the two sides of the second planar tooth top and a second arc-shaped tooth root. The elliptical wave generator is used for driving the flexible gear; the wave height of the wave generator is defined as the difference between a long half shaft and a short half shaft; the method comprises the following steps: acquiring a tooth profile parameter set of a flexible gear and a rigid gear, wherein the tooth profile parameter set comprises a first tooth crest arc radius, a first tooth root arc radius, a second tooth crest plane width and a second tooth root arc radius; based on the tooth profile parameter set, according to a preset matching relation used for optimizing the meshing performance, cooperatively determining a target wave height matched with the tooth profile parameter; and according to the target wave height, a corresponding wave generator is selected to complete the assembly of the harmonic reducer.

The invention belongs to the field of data processing, particularly relates to a wind turbine generator gear box tooth surface strength optimization method considering multi-working-condition load distribution, and aims to solve the problem that the optimization effect is affected due to the fact that strength optimization checking is carried out only for a single working condition in the prior art. The method comprises the following steps: acquiring working condition data of the gearbox under various preset working conditions; load spectrum decoupling processing is conducted on the working condition data, a dynamic load distribution matrix synchronous with the tooth surface meshing period is determined, stress field conversion is conducted on the dynamic load distribution matrix, and a tooth root bending stress field and a tooth surface contact stress field are obtained; inputting the tooth root bending stress field and the tooth surface contact stress field into a pre-constructed double-constraint optimization model to obtain a tooth surface strengthening parameter tensor output by the model; and inputting the tooth surface strengthening parameter tensor into a preset process mapping system. Based on the method provided by the invention, the multi-working-condition operation data of the gearbox are synchronously obtained for optimization calculation, and the limitation of traditional single load analysis is broken through.

The invention relates to the field of mechanical transmission control, and discloses a self-adaptive torsion optimization method and system based on a stress model. The method mainly comprises the following steps: acquiring strain, temperature and vibration data of a transmission system in real time through a distributed sensor network; constructing a three-dimensional dynamic stress field model, and marking a high-risk area; dynamically adjusting a safety threshold based on material fatigue characteristics, and generating a torque control curve by adopting an optimization algorithm; and eliminating response delay through a pre-compensation mechanism. The system comprises an edge calculation unit, a millisecond-level actuator and a grading protection module. According to the method, the tooth root stress concentration is successfully inhibited by 35% in the wind power gear box, the impact load is reduced by 52% in the industrial robot joint, the equipment reliability is remarkably improved, and the service life is remarkably prolonged. The device is suitable for transmission systems of wind power, electric automobiles, industrial robots and the like.

The invention relates to a tool clamp and method for a gear hobbing machine to machine splines at the ends of square shafts, and belongs to the technical field of machining of splines at the ends of the square shafts. According to the technical scheme, a positioning seat is arranged on the upper surface of a base, a horizontally-arranged fixing square groove is formed in the top of the positioning seat, the width of the fixing square groove is matched with the width of the front face of a square shaft to be machined, and the center of the fixing square groove and the center of a first tip are located on the same vertical line; a positioning ruler is arranged above the positioning seat and located between the square shaft and the clamping arm, a positioning square groove is formed in one side of the positioning ruler, and the width of the positioning square groove is matched with the width of the back face of the square shaft to be machined. The position of the square shaft is fixed through the tool clamp, it is ensured that the front face of the square shaft is aligned with a machine tool of a gear hobbing machine, it is ensured that starting points of machining are the same each time, and the tooth crest center line of circular shaft splines at the two ends of the square shaft is aligned with the front face center line of the square shaft or the tooth root center line of circular shafts at the two ends of the square shaft is aligned with the side face center line of the square shaft; the requirement that the square shaft end machining spline datum plane does not deviate is met.

The invention belongs to the technical field of gear machining, and discloses a gear milling blade and a disc-shaped milling cutter. The tooth milling blade comprises a side edge, a top edge and an auxiliary edge, wherein the top edge is arranged between the side edge and the auxiliary edge; the outer contour line of the top edge protrudes towards the workpiece to be machined, the outer contour line of the top edge comprises a top edge arc line and an oval arc line, one end of the top edge arc line is connected with the outer contour line of the side edge, and the other end of the top edge arc line is an end point E; one end of the elliptic arc line is connected with the end point E and is tangent to the end point E, and the other end of the elliptic arc line is connected with the outer contour line of the auxiliary blade. The tooth milling blade is provided with an elliptical profile curve, so that the curvature distribution on a tooth root transition curve can be effectively improved, the curvature radius of the tooth root transition curve is increased and the tooth root stress is reduced when a tooth groove is cut, and thus the tooth root strength of an involute gear is improved; and meanwhile, the elliptic arc line and the top edge arc line are connected and tangent at the end point E, so that the outer contour line of the top edge is ensured to be smooth.

The invention relates to the field of mechanical engineering, in particular to a multilevel screening speed reducer tooth matching method based on a standardized box body, which comprises the following steps of: acquiring basic parameters of an input gear speed reducer and parameters of each transmission stage, and acquiring derived parameter limit ranges of the basic parameters and the parameters; screening out a tooth matching scheme meeting user input constraint conditions, marking the tooth matching scheme as a candidate set # imgabs0 #, screening a serializable scheme based on general requirements of a serialized speed reducer on a final-stage gear pair, marking the serializable scheme as a candidate set # imgabs1 # on an existing standardized box body, designing a transmission system, and checking through tooth root bending fatigue strength to obtain a final-stage gear pair final-stage gear pair; and marking the tooth matching schemes meeting the strength requirement as a candidate set # imgabs2, performing serialized screening again based on the general requirement of the serialized speed reducer on the final-stage gear pair, and marking the schemes meeting the serialization as a final candidate set C1. According to the multi-layer screening mechanism, the tooth matching scheme meeting the strength requirement is rapidly matched for the serialized speed reducer.

The invention discloses a gear pair life prediction method based on dynamic stress, belongs to the technical field of reliability design of mechanical transmission systems, and aims to solve the problem of inaccurate life prediction caused by neglecting a dynamic effect and a real surface topography in an existing gear design method. The method comprises the following steps: firstly, acquiring gear pair interface mechanical property parameters considering shafting vibration, dynamic load and surface roughness, wherein the parameters comprise transient oil film pressure, friction coefficient, oil film thickness and shear stress; solving a three-dimensional subsurface stress field by adopting an algorithm and calculating von Mises equivalent stress distribution; stress volume integration is conducted on different rough surfaces, the honed surface is used as the reference, the relative fatigue life of other surfaces is calculated based on the Zaretsky life prediction theory, and accurate prediction and process optimization of the contact fatigue life are achieved; meanwhile, the dynamic bending stress of the tooth root is calculated based on the dynamic normal load, and the bending fatigue safety coefficient is checked.

The utility model relates to the field of machining tools, and discloses a machining tool for an external spline with side teeth, which comprises an external spline hobbing cutter and an external spline side tooth milling cutter, a plurality of groups of hobbing cutter teeth are arranged on the external spline hobbing cutter along the axial direction, a root digging structure is arranged at the tooth top of each hobbing cutter tooth, and a chamfer is arranged at the tooth root of each hobbing cutter tooth; the external spline side tooth milling cutter comprises a milling cutter rod, a milling cutter blade is installed at the end of the milling cutter rod, an involute-shaped cutting edge is arranged on the milling cutter blade, and a plurality of involute cutting edge teeth are arranged on the cutting edge side by side. The external spline driving shaft capable of machining the spline with the side teeth solves the problem that in the prior art, a cutter capable of machining the external spline of the spline driving shaft in the design does not exist, and the machining requirement of the external spline with the side teeth cannot be met.

The utility model relates to a brush head and an electric toothbrush, the brush head is configured to be installed on a machine body and comprises a brush head body, a cleaning part and a transmission part, the cleaning part comprises a first brush head and a second brush head, and the second brush head is configured to be pivotable; the transmission part comprises a first transmission piece and a second transmission piece, the first transmission piece and the second transmission piece are connected through a connecting piece, in the extension direction of the first axis, by taking the connecting piece as a boundary, one end of the second transmission piece is configured to be matched with a limiting part correspondingly arranged on the machine body, and the other end of the second transmission piece is configured to be eccentrically matched with the second brush head; the electric toothbrush comprises a machine body, a power shaft and a brush head, the brush head is connected with the machine body through the power shaft, the power shaft is constructed as an external vibration source of the brush head, and a cleaning part of the brush head is constructed to vibrate relative to the machine body. According to the brush head and the electric toothbrush provided by the invention, multi-mode composite motion of reciprocating vibration and reciprocating rotation can be realized, and the cleaning capability on interdental crevices and tooth roots is enhanced.

The invention discloses a detection method and device of a tooth root stress test system and a medium, the tooth root stress test system comprises a plurality of tooth root stress detection units, the tooth root stress detection units are attached to the surface of a tooth root, each tooth root stress detection unit comprises a plurality of strain gauges, and each strain gauge comprises a positive terminal and a negative terminal; in the same tooth root stress detection unit, the strain gauges are connected in series; the detection method of the tooth root stress test system comprises the following steps: acquiring a current total resistance value of the tooth root stress detection unit and a theoretical total resistance value after the strain gauges are connected in series; judging whether the difference value between the current total resistance value and the theoretical total resistance value is within a first difference value preset range or not; and if yes, determining that each strain gauge in the tooth root stress detection unit is normally insulated.

The invention discloses a climbing robot lifting force control method based on finite element simulation, and relates to the technical field of engineering machinery data processing. Comprising the following steps of: establishing a finite element simulation model of the climbing robot to obtain geometrical characteristics including tooth number, pressure angle, tooth root curvature radius, tooth root height and tooth width of an uplink transmission gear and material characteristics including elastic modulus and Poisson's ratio; and simulating gear operation in an on-load state, acquiring torque data to determine a modulus, and calculating tooth root stress. And correcting the tooth root stress in combination with vibration characteristics and surface temperature to obtain an accurate value. The roughness is calculated through the surface height difference, the friction coefficient is corrected by combining the environment humidity and the inclination angle, and the friction force is calculated. And finally, according to the friction force, the accurate tooth root stress and the gravity, a real-time lifting force control coefficient is calculated, the lifting force is dynamically corrected, and accurate control over the lifting force of the climbing robot is achieved.

The invention discloses a tooth root rolling and finishing composite strengthening process method, which mainly considers that a gear is easy to generate tooth root bending fatigue failure under heavy load, obtains a modified tooth root through tooth root micro modification, and then adopts ultrasonic rolling to carry out tooth root local strengthening on the gear tooth root so as to improve the residual stress of the tooth root. And then the gear surface roughness after barreling and finishing is calculated according to the radius of the finishing abrasive particles, and the gear tooth root is subjected to finishing treatment based on a theoretical calculation result. And finally, the gear is processed to obtain the high-performance gear, so that the bending fatigue resistance of the gear tooth root is improved. And according to the gear material performance, the ultrasonic rolling strengthening tooth root performance parameters are determined. According to the stress relation, the tooth root residual stress after ultrasonic rolling strengthening is calculated, then the gear is subjected to barreling finishing machining analysis, the theoretical minimum roughness after barreling finishing is calculated according to the barreling finishing abrasive particle radius and tangential force, and finally actual machining is conducted. According to the method, grinding micro-modification, ultrasonic rolling strengthening and barreling finishing can be combined, the tooth surface of the gear is strengthened by correcting all technological parameters, the performance of the tooth root after machining is improved, and meanwhile the machining precision of the gear is improved.

The invention discloses a method for calculating wind resistance power loss under oil injection lubrication of a spiral bevel gear pair, and belongs to the field of aero-engine power transmission systems. The method comprises the following steps: constructing a gear tooth surface equation of the spiral bevel gear pair based on a Cartesian coordinate system; establishing a spiral bevel gear pair parameter model provided with an oil injection lubrication system; calculating tooth surface wind resistance power loss, large and small end surface wind resistance power loss, front and rear conical surface wind resistance power loss, tooth crest circumferential surface wind resistance power loss, tooth groove and tooth root wind resistance power loss and pump flow wind resistance power loss of the spiral bevel gear pair; and all the wind resistance power losses are added to obtain the total wind resistance power loss of the spiral bevel gear pair under oil injection lubrication. According to the method, a special analytical model is established for each region, regional modeling can be more suitable for an actual flow field, and the wind resistance power loss of the spiral bevel gear pair can be accurately calculated.

The utility model relates to the technical field of gear detection, and discloses a gear thickness detection device which comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with an L-shaped plate and a supporting plate, the other end of the L-shaped plate is connected with a detection mechanism, the upper end of the supporting plate is connected with a rotating mechanism, and one end, close to the L-shaped plate, of the rotating mechanism is connected with a moving mechanism. The other end of the moving mechanism is connected with two clamping assemblies, the other ends of the two clamping assemblies are connected with clamping rods, and the two clamping rods are parallel up and down. According to the gear thickness detection device, when the tooth thickness of a gear needs to be detected, only the clamping assembly needs to be controlled to move through the moving mechanism, then the gear can be clamped from the two sides through the two clamping rods, then the height of a tooth root is detected through the detection mechanism, and after the gear is controlled to rotate by a certain angle through the rotating mechanism, the gear thickness is detected. And the height of the tooth crest is detected through the detection mechanism, and finally the height difference between the tooth root and the tooth crest is obtained, so that the tooth thickness can be directly obtained, and convenience and rapidness are achieved.

The utility model discloses a spline matching structure and a transmission. The technical problems that under the action of alternating loads, gaps between existing splines are prone to causing abrasion and fatigue risks, and in addition, due to the consideration of machining errors and easy assembly, the risk of partial fretting abrasion still exists are solved. The synchronizer is provided with an internal spline; the second shaft is provided with an external spline; the tooth crest of the external spline is in interference fit with the tooth groove of the internal spline; the tooth crest of the internal spline is in clearance fit with the tooth groove of the external spline; the tooth sides of the spline teeth of the external spline and the spline teeth of the internal spline are in transition or clearance fit; the two sides of the tooth root of each spline tooth on the inner spline are each provided with a groove. According to the utility model, the external spline and the internal spline adopt a static connection matching mode of large-diameter centering interference fit, so that the problem of meshing eccentricity of a spline pair is solved, the probability of fretting wear caused by eccentricity of the spline pair is reduced, the service life of the static connection spline pair is prolonged, and the torque transmission reliability is improved.

The invention provides a straight gear system crack fault diagnosis method based on an actual crack propagation curve, and the method specifically comprises the steps: building a gear dynamics analysis model based on the modal condensation of a gear; combining historical data of a gear crack fatigue propagation experiment to obtain a tooth root crack propagation path, and substituting the tooth root crack propagation path into the gear dynamics analysis model to obtain the time-varying meshing stiffness of the gear containing the cracks; simulation acceleration signal data are obtained through a gear dynamics analysis model, and tooth root crack degree identification features are established; and the tooth root crack degree identification features serve as actual signals, and the expansion degree of gear cracks is judged through a variational mode decomposition method. The invention provides a method for improving tooth root crack recognition by considering the condition that a center distance error and a misalignment error exist at the same time. According to the method, index construction is carried out through simulation, noise interference of the measurement environment is reduced through a variational mode decomposition reconstruction method, and crack vibration impact characteristics hidden in periodic signals are extracted.

The invention discloses a planetary gear complex working condition damage analysis method, which mainly considers accumulated fatigue damage calculation of a planetary gear train under a complex working condition, and comprises the following steps of: establishing a multi-degree-of-freedom planetary gear train torsion nonlinear dynamic model, calculating meshing force, and calculating contact stress and bending stress of gear teeth based on the meshing force. Then, a rain flow counting method is adopted to conduct cycle counting on the tooth surface contact stress and tooth root bending stress time history of each stage of gear to obtain a gear stress spectrum, stress data is subjected to load grading and substituted into a Goodman equation, equivalent symmetric cyclic stress amplitude and frequency are obtained, and on the basis of a known material S-N curve, a gear stress spectrum is obtained; and performing damage calculation on the rotating part by using a Miner damage theory. According to the method, a rain flow counting method and a Goodman equation calculation method are combined, fatigue damage of planetary gear teeth under complex working conditions is analyzed, and planetary gear train fatigue damage prediction is achieved.

The invention discloses an involute helical gear forming grinding force prediction method, which comprises the following steps: firstly, based on a helical gear forming grinding space motion relationship, establishing a helical tooth surface model comprising an involute surface and a tooth root transition curved surface, and constructing a geometric contact model of a grinding wheel and a gear; then, tooth surface deformation data obtained after heat treatment are obtained through a three-coordinate measuring machine, coordinate mapping is carried out, and the grinding depth and contact parameters are corrected; on the basis, a grinding force integral model considering the heat treatment influence is established by combining a plane grinding mechanism, and integral calculation is carried out on tangential and normal grinding force of a tooth surface involute section, a transition arc section and a tooth bottom section; finally, actual measurement data are obtained through a grinding experiment, and model parameter calibration is completed. According to the method, dynamic and accurate prediction of tangential and normal grinding force in the bevel gear forming and grinding process can be achieved, and a reliable basis is provided for mechanical behavior analysis and process optimization in the gear machining process.

The invention provides a design method of a full-life diamond roller for a powerful inner honing wheel. The design method comprises the steps that design parameters of the diamond roller are determined according to parameters of an outer gear and the inner honing wheel; the design parameters of the diamond roller comprise a normal modulus Mn, a circle dividing normal pressure angle Afn, a helix angle Bf2, a tooth number Z2, a displacement coefficient Xn2, an addendum circle diameter Deg2, a root circle diameter Dig2 and an effective starting circle diameter dyx2; and calculating the addendum circle diameter and addendum width of the diamond roller. According to the parameters of the new inner honing wheel and the old inner honing wheel, design parameters of the two sets of diamond rollers are determined respectively, and then the design parameters of the full-life diamond roller are obtained through intersection; the tooth crest width of the diamond roller is checked, it is guaranteed that the tooth crest does not become sharp, parameters of the diamond roller are optimized, the optimality of the honing process is guaranteed, the diamond roller is designed only in 20 minutes at present, and compared with dozens of hours in the prior art, efficiency is greatly improved, and the new product development period is shortened.

The invention discloses a rotary speed reducer gear tooth root strength test device which comprises a test bed, a mounting mechanism, a rotating mechanism, a limiting mechanism, a strength test mechanism and an observation mechanism. A mounting mechanism is arranged in the center of the test bench to fix a to-be-tested gear and can adapt to replacement of gears of different specifications; the mounting mechanism is connected with a rotating mechanism under the test bench, and a rotating motor is provided with an encoder to realize accurate rotation angle switching of a gear; limiting mechanisms are arranged on the left and right sides of the mounting mechanism and can move in the radial direction to be engaged with the gears for limiting or separated for avoiding. Strength test mechanisms are arranged in front and back, can be adjusted in the radial direction, can be meshed with a single tooth to apply force, and can be fed back by a force sensor to switch postures by rotating an oil cylinder and an air cylinder; an observation mechanism on the strength test mechanism is used for detecting tooth root cracks by using an endoscope and marking the tooth root cracks through a spray head. The device does not need repeated positioning, can continuously detect each tooth root, improves the efficiency and precision, is adaptive to gears of various specifications, and meets the industrial detection requirements.

The invention provides a bionic stubble cutting knife, a bionic stubble cutting knife device and a design method, and relates to the technical field of agricultural machinery, the bionic stubble cutting knife comprises a knife disc base body and a plurality of knife teeth uniformly distributed along the circumference of the knife disc base body in the same direction, each knife tooth comprises a main cutting edge, a tooth tip, a knife back and a tooth root reinforcing rib which are connected in sequence, and the angle of the main cutting edge imitates the upper jaw of a earwig. The outer contour curve of the cutter tooth is formed by sequentially connecting a main cutting edge curve, a tooth top curve, a cutter back curve and a tooth root reinforcing rib curve in a transition mode, and the connecting points of the curves are tangent. The bionic stubble cutting knife device comprises a bionic stubble cutting knife, a connecting structure, a vibration reduction structure, a connecting spring and a driving device, and the vibration reduction structure adopts a two-stage composite vibration reduction system. Through a bionic cutting structure, a two-stage vibration reduction system and a flexible adaptive design, cooperation of efficient cutting, stable operation, cost reduction, efficiency improvement and environmental protection is achieved, a better solution is provided for agricultural stubble cutting operation, and technological upgrading of agricultural machinery equipment is promoted.

The invention relates to a geometric parameter optimization design method for a large-overlap-ratio gear, and belongs to the field of vehicle transmission design. According to the technical scheme, the geometric parameter optimization design method for the large-overlap-ratio gear comprises the following steps that S1, initial parameters of a gear pair are determined according to the speed ratio requirement and the center distance; s2, dense tooth optimization is carried out according to the tooth root strengthening effect; s3, the addendum circle is determined according to the requirement of the sliding rate # imgabs0 #; s4, distributing tooth thickness according to fatigue life and backlash requirements; s5, determining a dedendum circle according to a top clearance requirement; and S6, performing tooth root transition curve optimization and hob design according to the re-determined gear parameters, and performing hobbing simulation verification. According to the scheme, gear tooth high-strength design and dense tooth optimization are achieved through a tooth root transition curve optimization method, the meshing efficiency and the transmission stability are further considered, the tooth height is controlled and optimized through the sliding rate, the tooth thickness and the backlash are distributed by balancing the fatigue strength of the paired gear, and the macroscopic geometric parameter optimization design of the gear is achieved.

A method of making a tooth profile surface on a workpiece. The method includes providing a gear cutting tool and rotating the gear cutting tool about an axis of rotation. The cutting tool and the workpiece engage each other and roll together according to the generating roll to create a contoured surface of the tooth. The generating roll includes a first roll ratio and a second roll ratio, where the first roll ratio and the second roll ratio are different from each other, and one of the first roll ratio and the second roll ratio results in a contoured section being formed on the tooth profile surface.

The utility model relates to a carrier gear for a compact spinning device and an assembly of the carrier gear, the carrier gear is meshed with a front roller gear on a front roller and a compact lower roller gear on a compact lower roller, the carrier gear comprises an involute carrier tooth and a carrier tooth groove, and when the carrier tooth is connected with the front roller tooth groove at a reference circle, the carrier gear is meshed with the front roller gear on the front roller and the compact lower roller gear on the compact lower roller. The gap h1 between the tooth root bottom face of the adjacent gap bridge tooth groove and the highest point of the tooth top face of the corresponding front roller tooth is within 0.40 + / -0.05 mm, the gap bridge tooth groove is provided with an arc face or a plane tangent to an involute and transitions to the tooth root bottom face through tooth root fillets R on the two sides, and the width b of the two tooth root fillets R of the gap bridge tooth groove is within 1.10 + / -0.05 mm. According to the carrier gear, the tooth groove pattern containing capacity of the carrier gear can be improved, the influence of jumping of a front roller caused by tooth groove pattern accumulation on the spinning quality is reduced, the maintenance time is prolonged, and the production cost is reduced.

The invention discloses a split type longitudinal tree type tenon tooth blade root diamond roller which is simple in structure, capable of achieving multi-size blade root tooth profile machining, small in limitation and low in consumption cost when large machining sizes are changed. The diamond roller comprises an end face diamond roller body, an axial gasket and a blade root molded line diamond roller body, the thickness of a blade root is sequentially increased from front to back, the axial gasket is arranged between the end face diamond roller body and the blade root molded line diamond roller body and is annular, and the blade root molded line diamond roller body is sequentially sleeved with the axial gasket and the end face diamond roller body. The end face diamond roller, the axial gasket and the blade root molded line diamond roller are kept concentric on the same horizontal plane. Therefore, the invention further provides a design method of the split type longitudinal tree type tenon tooth blade root diamond roller, the blade root type diamond roller is designed according to a blade root median graph made by a blade root graph and a blade root tolerance graph, and the working face and the non-working face of the blade root diamond roller are correspondingly offset according to blade root tolerance. The working face and the non-working face are subjected to transition treatment.

The invention relates to a rotor shaft of a rotor of an electric machine, comprising a shaft component (3) on which a toothing portion (7) having an external toothing (8) is directly formed and on which a first and a second, in each case radial, rolling element raceway (9, 10) are directly formed axially adjacent to the toothing portion (7), wherein: the toothing portion (7) is provided axially between the first and the second rolling element raceway (9, 10); an annular first rolling bearing (11) comprising first rolling elements (16) guided in a first cage (15) is seated on the first rolling element raceway (9), said first rolling elements rolling directly on the first rolling element raceway (9), and an annular second rolling bearing (13) comprising second rolling elements (18) guided in a second cage (17) is seated on the second rolling element raceway (10), said second rolling elements rolling directly on the second rolling element raceway (10); the diameter (dH1) of an envelope circle of the first rolling elements (16) is less than the diameter (dF) of a root circle of the external toothing (8); and the diameter (dH2) of an envelope circle of the second rolling elements (18) is greater than the diameter (dK) of a tip circle of the external toothing (8).

Electric motor device (10) for driving a sunroof (2) or a roller blind in a vehicle (100), comprising: a rotor device (20) comprising an at least partially cylindrical outer surface (21); a stator device (30) having a core (31) including a plurality of stator teeth (32) projecting toward the rotor device (20), the stator teeth (32) comprising a tooth root (33) connected to a stator ring (34) and a tooth tip (35) having a wing-shaped tooth shoulder (36) on each side in a circumferential direction, the wing-shaped tooth shoulder (36) having a tip (37) formed at an end portion (47) of the respective wing-shaped tooth shoulder (36) in the circumferential direction; wherein the tooth tip (35) includes a surface (39) facing the at least partially cylindrical outer surface (21) of the rotor device (20) to form a gap (40) therebetween; wherein the surface (39) comprises: - a hollow cylindrical surface section (41) having a constant gap distance (g1) in the direction of the at least partially cylindrical outer surface (21) of the rotor device (20) in the circumferential direction, and - each having an inclined surface portion (42) having an increasing gap distance (g2) with respect to the at least partially cylindrical outer surface (42) of the rotor device (20) in the circumferential direction towards the respective tip (37) formed by the end portion in the circumferential direction; wherein the hollow cylindrical surface portion (41) includes a first radius (r1) with respect to a center axis (C) of the rotor device, and the tip (37) formed at the end portion in the circumferential direction has a second radius (r2) with respect to the center axis (C) of the rotor device (20); wherein a first ratio (r2 / r1) between the second radius (r2) and the first radius (r1) is 1.02 or more and 1.08 or less.

The application discloses a burr cleaning equipment for gear machining, and belongs to the technical field of gear machining, and the technical key points are as follows: the burr cleaning equipment comprises a bottom plate, a gear positioning mechanism and a gear polishing mechanism are arranged, and the gear body can be clamped and fixed in a self-adapting mode according to the inner diameter of the gear during burr cleaning, manual intervention is greatly reduced, the labor intensity of an operator is reduced, and the synchronous burr cleaning mode for the tooth surface, the tooth top and the tooth root reduces the corresponding clamping frequency and adjustment time, and the overall machining efficiency is significantly improved; the gear taking mechanism can quickly and stably complete gear grabbing, discharging and grabbing feeding operations, the movement characteristics of the multi-degree-of-freedom moving assembly can significantly shorten the single feeding and discharging time, the production efficiency is significantly improved compared with traditional equipment, and the burr cleaning equipment has the advantages of convenient gear taking and placing, high automation degree and high working efficiency.