194 results about "Involute" patented technology

The invention discloses a straight gear shape-free measurement method based on single-group line structured light. The method comprises the following steps: constructing an optical platform coordinate system, carrying out line structured light coordinate system calibration through a spherical calibration body, and calibrating the rotation center of a precision turntable; installing a measured straight gear, establishing a straight gear coordinate system, and adjusting the position of the linear structure optical measuring head, so that the measuring field of view of the linear structure optical measuring head covers a root circle to an addendum circle of the straight gear; the straight gear is installed on a precision rotary table, the straight gear is driven to rotate at a constant speed, a linear structure optical probe scans and collects straight gear contour point cloud data and circular grating angle information, and tooth surface three-dimensional point cloud data is obtained; based on the three-dimensional point cloud data of the tooth surface, extracting an addendum circle, a dedendum circle and an involute tooth profile, and calculating spur gear parameters; performing reverse three-dimensional shape modification tooth surface identification on the shape modification straight gear to generate a three-dimensional deviation diagram; and outputting a measurement result and printing a report. The problems of shape-free rapid measurement, modification tooth surface identification and tooth surface three-dimensional deviation characterization of the straight gear with unknown basic parameters are solved.

The invention relates to a helical gear detection method based on waviness information and a gear detection system. The helical gear detection method based on waviness information comprises the following steps: extracting full-tooth waviness information of a helical gear; processing the full-tooth waviness information to obtain a spectrogram; calculating an angle alpha of waviness on any single tooth of the helical gear; and according to the angle alpha of the waviness on the single tooth and the spectrogram, judging whether the gear has noise requirements or not. According to the method, through full-tooth order analysis and single-tooth topology three-dimensional angle analysis of the involute helical gear, important factors influencing gear meshing noise are calculated and extracted, tooth surface waviness information can be effectively detected, ghost frequency can be effectively identified and found, and a ripple line angle can be effectively analyzed; the method greatly improves the fitting quality of data, thereby improving the detection precision of the gear, enabling the gear to meet the noise detection requirements, and providing a brand new detection method for high-speed and low-noise gear production.

A value traceability method for an involute curve with a large base circle radius. The method comprises the following steps: step 1, determining a coordinate system for value traceability and value transfer parameters; step 2, adjusting the pose of an involute template (8); step 3, adjusting the position of the involute template (8); step 4, calibrating involute parameters; and step 5, eliminating coordinate system establishment errors to achieve calibration of a measurement instrument. The method fills the gap of value traceability methods for large-size gears with diameters greater than 500 mm, and can effectively identify the impact of coordinate system establishment errors on the accuracy of tooth profile measurement, and improve the applicability of a large-gear measurement instrument (9) in complex environments such as on-machine measurement. The method enables high-precision involute measurement, is simple and easy to implement, offers high measurement accuracy, facilitates transportation and installation adjustments, and has good market application prospects and promotion value.

A rotary mechanical shaft end fluid pressure adjusting device comprises a circular ring and axial flow guide grooves, the axial flow guide grooves are evenly distributed in the inner surface of the circular ring in the circumferential direction, the groove shapes are logarithmic spiral lines or parabolas or involutes, and the number of the axial flow guide grooves is 30-120. The circular ring is used for being fixed to the inner surface of the stator, and a radial gap is formed between the circular ring and the rotor. According to the invention, the pressure of the flowing fluid at the shaft end can be reduced or increased in the axial direction, the adjusted pressure can further meet the performance requirements of subsequent sealing or other parts, and the function completeness and stability of the whole machine are guaranteed.

The invention discloses a cable stopper device for adjusting mooring tension, and relates to the technical field of offshore mooring, the cable stopper device comprises a shell fixed on a tension leg platform, the upper end and the lower end of the shell are both provided with openings, the inner wall surface of the shell is an inner concave cambered surface, the inner side of the shell is slidably connected with a head stopper, the head stopper is of a split structure, and the head stopper is provided with an opening. A through hole is formed in the middle of the head stopper, a dragging head is arranged in the through hole in a penetrating mode, clamping teeth are arranged on the outer wall of the dragging head and the hole wall of the through hole, and the dragging head is matched with the head stopper in a limiting mode through the clamping teeth. Connecting rings are arranged at the two ends of the dragging head, the top end of the dragging head is connected with a winch cable on the tension leg platform, and the bottom end of the dragging head is connected with a mooring cable connector on the tension leg platform. The clamping teeth on the dragging head and the clamping teeth on the head stopper are all involute tooth profiles, the head stopper is in an open state when the dragging head is pulled upwards, the head stopper and the dragging head can be locked and stopped in a closed state, and therefore the tension can be adjusted in the field operation period of the tension leg platform.

The static pressure knife rest of the gear shaping machine comprises an eccentric disc, a swing rod is hinged to the eccentric disc, and the other end of the swing rod is hinged to the top end of a knife shaft through a ball pull rod and a ball head. The cutter shaft penetrates through the cutter rest body; a cutter is mounted at the lower end of the cutter shaft; a worm gear and a worm are installed at the upper end of the tool rest body, and the worm gear is pressed through a large flange plate to be axially fixed. The cutter shaft penetrates through the worm gear and an inner hole of the cutter shaft sleeve at the same time. Due to the fact that the outer circle profile face of the four-tooth tooth-shaped tooth crest of the formed hydrostatic guide rail is wide, enough space can be provided for designing a radial four-cavity centripetal hydrostatic bearing, and therefore the upper end of a cutter shaft not only has centripetal clamping static pressure formed by static pressure cavities of involute tooth faces of the hydrostatic spline guide rail but also has static pressure clamping force of the tooth crest. The rigidity of the upper end of the cutter shaft is enhanced through superposition of the two clamping forces.

The invention relates to a precision slender triangular spline inner broach machining method. The problems that an existing method is poor in quality and low in production efficiency are solved. The method comprises the steps that 1, a broach is subjected to repeated upsetting and drawing forging from a blank, and carbide segregation after forging is guaranteed; 2, rough machining is carried out to control bending deformation out-of-tolerance, straightening is carried out after machining is completed, and machining stress is eliminated; 3, bending deformation is controlled through four times of outer circle grinding, straightening and bearing grinding measures in semi-finish machining; 4, tooth profile rough grinding is carried out, and grinding of all tooth profiles is completed through one-time clamping machining; straightening is conducted after machining is completed, and machining stress is eliminated; and 5, the starting stroke and the stopping stroke of a workbench are changed, involute tooth profile parameters are input for accurate grinding, the consistency of the centers of the triangular spline teeth and the involute spline teeth is guaranteed, and when the M value of the two sections of tooth profiles is ground to be close to the measured value of a finished product, the feeding amount of a grinding wheel is reduced, smooth grinding is repeated, and spark-free grinding is carried out. The machining efficiency is high, the part machining quality is stable, and the batch production requirement can be met.

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 relates to the technical field of high-precision grinding machining of screw elements of large extrusion granulation units, in particular to a rapid alignment and positioning device for an involute spline screw element. The problem of relative position deviation of the machined internal spline and the outer contour milling shape caused by a fit clearance in the original machining process is solved, the high-precision machining effect is achieved, the machining precision of the screw element is ensured, and the clamping and positioning errors in the screw element assembling process are reduced.

The present invention relates to an apparatus (101) with jig for testing and determining radial crushing load of tubular element comprises a pinion gear (1), a stationary jaw carrier (2), plurality of jaws (3) and a rack gear (4). The stationary jaw carrier (2) comprising a flange (7) having borehole in center and supportive circular disc (8). Said portion is arranged in the involutes shape hole (5) of the pinion gear. The teeth of the pinion gear (1) are engaged with the slots of the rack gear (4). The plurality of jaws (3) is configured with the slots (9) of the supportive circular disc (8) of the stationary jaw carrier (2) and pocket curved hole (6) of involutes hole (5) of the pinion gear. The jaws (3) are linearly movable towards the center of borehole by the rotation of the pinion gear (1) through the up-down movement of the rack gear (4). Said jig assembly (100) testing and measure the radial crushing load of the tubular elements, including yarn carrier / cops / bobbin.

According to the involute type multi-arm spiral sound array and the method, in the array, a center supporting piece is of a regular heptagonal plate-shaped structure, seven side edges of the center supporting piece are connected with seven base circle spiral arm connecting pieces in a welding mode respectively, the other end of each base circle spiral arm connecting piece is connected with an internal spiral arm structure, and the other end of each internal spiral arm structure is connected with an outer spiral arm structure; the other end of each internal spiral arm structure is connected with one middle spiral arm structure, and the other end of each middle spiral arm structure is connected with one external spiral arm structure; each external spiral arm structure is in welded connection with the middle spiral arm structure adjacent in the anticlockwise direction through an adjacent arm supporting rod; the bottom face of the center supporting piece is connected with the array connecting piece in a welded mode, and the array connecting piece is connected with the array supporting base structure in a fastened mode through bolts. The internal spiral arm structure, the middle spiral arm structure and the external spiral arm structure are provided with circular through holes used for installing microphones, and the circle centers of the through holes are located on an involute generated by the same base circle.

The present invention relates to a push chain device, comprising: a push chain (10) including a curved portion (10b) and a straight portion (10a) along an axis, the chain including links (12) hinged to the axis; a push chain guide (20); a drive sprocket (1) having teeth (2) interlocked with the push chain, the sprocket contacting the push chain through a circular involute-shaped contact surface (2a), the contact surface (2a) being a tooth, the teeth (2) engaging with the chain, and defining a line of action at an angle between -10° and 10° to the axis of the straight portion, the line of action being offset relative to the hinge axis of the link, the sprocket contacting the straight portion (10a) but not the curved portion (10b), and being mounted such that it can rotate on an axis located on the side of the chain opposite to the center of curvature of the curved portion (10b), the contact surface (2a) including a convex front surface toward the straight portion (10a) and a rear surface toward the curved portion (10b) when the teeth (2) interlock.

The invention discloses a tooth profile generation method of an involute and cycloid combined tooth profile: using Fourier function to fit the transmission ratio curve, there are no two curve segments with a curvature less than the minimum curvature without root cutting, and using a polynomial curve to connect the two curve segments end to end to obtain the transmission ratio curve; after calculating the pitch curve coordinates of the driving and driven non-circular gears, the tooth top part outside the pitch curve of the driving non-circular gear and the tooth root part within the pitch curve of the driven non-circular gear adopts a cycloid tooth profile, and the tooth root part within the pitch curve of the driving non-circular gear and the tooth top part outside the pitch curve of the driven non-circular gear adopts an involute tooth profile; after the tooth top profile of the driving non-circular gear is connected with the tooth root profile, and the tooth top profile of the driven non-circular gear is connected with the tooth root profile, the connecting segments at both ends of the involute tooth profile and the cycloid tooth profile are replaced by a line segment tangent to both the involute tooth profile and the cycloid tooth profile. The invention can generate a tooth profile without root cutting for a transmission ratio curve with too small a curvature.

A compressor comprising a compressor housing (12), a scroll compressor unit (22) arranged in the compressor housing (12) with a first, stationary compressor body (24) and a second compressor body (26) movable relative to the stationary compressor body (24), the first and second spiral ribs (34, 38) of which are designed in the form of a circular involute and engage with one another to form compressor chambers (42) when the second compressor body (26) is moved relative to the first compressor body (24) on an orbital path (48), an axial guide (96) which supports the movable compressor body (26) against movements in a direction parallel to a central axis (44) of the stationary compressor body (24) and guides it during movements in a direction transverse to the central axis (44), an eccentric drive (242) for the scroll compressor unit (22),which has a driver (246) driven by the drive motor (222) and rotating on the orbital path (48) around the central axis (44) of a drive shaft (228), which in turn cooperates with a driver receptacle (282) of the second compressor body (26), and a coupling (164) preventing self-rotation of the second compressor body (26), wherein the eccentric drive (242) has an eccentric drive pin (244) driving the driver (246) and a mass balancing body (254), and wherein the eccentric drive pin (244) and the mass balancing body (254) are arranged on opposite sides of a mass balancing plane (ME), characterized in that the mass balancing body is designed as a mass balancing pin (254), that the mass balancing pin (254) is an element of a movement limiting unit (264) for the driver (246) is.,

The utility model relates to a stationary shaft shoulder stirring head which comprises a shaft shoulder and a stirring head coaxially butted with the tail end of the shaft shoulder, the stirring head is of a circular truncated cone structure, the flaring end of the stirring head is coaxially butted with the tail end of the shaft shoulder, and a threaded groove is formed in the annular wall in the axial direction of the stirring head; the stirring head of the circular truncated cone structure is adopted, the design of the axial thread grooves in the annular wall can play a spiral flow guide role on softened metal materials, the problem of material overflow caused by a traditional plane shaft shoulder is effectively avoided, the welding seam filling rate and the joint compactness are remarkably improved, and defects are reduced. Through the synergistic effect of the circular truncated cone structure and the threaded groove, stress is dispersed through the continuous and smooth geometrical shape, the problem of stress concentration caused by multi-groove spaced arrangement of involute grooves in the prior art is solved, meanwhile, the design that the flaring end of the stirring head is embedded into the shaft shoulder ring groove enhances the connection stability, vibration abrasion under high-speed rotation is reduced, and the stirring effect is improved. Durability of the stirring head is remarkably improved, and use cost is reduced.

The invention discloses a wear-resistant elastoplastic body quincunx pump molded line and a quincunx pump thereof. The molded line is fixed by an outer rotor, and an inner rotor performs eccentric motion along the inner side of the outer rotor and is formed by conjugate meshing; the molded line of a first worm claw part of the outer rotor consists of an arc section AB, an arc section BC, a transition cubic curve section CD, an involute section DE, a transition cubic curve section EF and an arc section FG; the molded line of the second worm claw part of the inner rotor is composed of an arc section ab, an arc section bc, a transition cubic curve section cd, an involute section de, a transition cubic curve section ef and an arc section fg. The characteristics of accurate conjugate meshing and point contact of the involute are adopted, compared with line contact of other molded lines, friction abrasion between rotors is reduced, the sealing effect between the involute and the inner wall of a pump body is good under the high-pressure conveying working condition, it is guaranteed that the conveying pressure is lasting and stable, pulsation is reduced, and the working efficiency is improved.

The invention discloses an involute cylindrical gear heat treatment spiral line deviation calculation method and system, electronic equipment and a storage medium. The method comprises the steps that a pre-heat tooth surface point set and a post-heat tooth surface point set are obtained; dividing the pre-heating tooth surface point set into m first sub-point sets, and dividing the post-heating tooth surface point set into m second sub-point sets; constructing a cylindrical surface of the reference circle, and solving a first intersection point set of each first sub-point set and the cylindrical surface and a second intersection point set of each second sub-point set and the cylindrical surface; solving a distance difference value between two points of the first intersection point set and the second intersection point set; solving a distance difference value of each point of the first intersection point set relative to the initial point; a spiral line deformation difference value curve is constructed, data selection is conducted on the spiral line deformation difference value curve again according to the value counting range of the spiral line, and a final spiral line deformation curve is obtained; and according to the final spiral line deformation curve, a spiral line deviation value is solved. According to the invention, the helix deviation can be accurately calculated.

An online measurement gear precision evaluation method considering geometric errors of a large-specification gear making machine tool is characterized in that a measurement path is planned based on the large-specification machine tool which is provided with an online measurement system and contains X, Y, Z and C axes, an online measurement system geometric error model is established, the influence of the geometric errors on a measurement result is analyzed, and the precision of the large-specification gear making machine tool is evaluated. And obtaining a theoretical comparison position corresponding to the actual measurement point, and evaluating the processed measurement result. A measurement path is planned according to an involute helical gear measurement principle and shaft configuration characteristics of a large-specification gear making machine tool; establishing a geometric error model in combination with the measurement path; and analyzing the influence of the geometric error on the measurement result, correcting the measurement result, and evaluating the corrected measurement result. According to the invention, the online measurement evaluation accuracy of the large-specification gear making machine tool is improved.

The present invention discloses a fixed-point conjugated 3-twisted-blade rotor volume pair and a helical gear power pair, wherein the 3-twisted-blade rotor volume pair comprises two non-contact 3-twisted-blade rotors with the same end face profile, opposite spiral directions and the same spiral angle, and the helical gear power pair comprises two contact-type standard involute cylindrical helical gears with the same end face profile, opposite spiral directions and the same spiral angle, and the end face pitch circle radius and spiral angle of the 3-twisted-blade rotor volume pair and the helical gear power pair are equal, and the spiral directions of the 3-twisted-blade rotor and the standard involute cylindrical helical gear on the same axis are opposite. The present invention has the beneficial effects of maximizing the shape coefficient and volume utilization coefficient, smaller radial leakage rate and conjugate leakage rate, and no theoretical flow pulsation and axial force.

The invention relates to the technical field of grinding wheel detection, in particular to an involute tooth profile on-machine detection method for a dish-shaped grinding wheel, which comprises the following steps: controlling different positions of the grinding wheel to be in contact with a laser interferometer through a machine tool to measure the radius of the grinding wheel; measuring tooth thicknesses of the center position and different radius positions of the grinding wheel; and comparing the measured tooth thickness of the grinding wheel with the theoretical tooth thickness, and evaluating whether the tooth profile precision of the grinding wheel meets the machining requirement or not. According to the method, different positions of the grinding wheel are controlled to be in contact with the laser interferometer through the machine tool, measurement of the radius of the grinding wheel, the center position of the grinding wheel and the tooth thickness of different radius positions of the grinding wheel is achieved, comparison with the theoretical tooth thickness is achieved, and therefore whether the tooth profile precision of the grinding wheel meets the requirement or not is evaluated. Consistency of dressing, detecting and machining of the grinding wheel is guaranteed. The measurement method is simple to operate and does not need complex data operation processing, so that the problem that an existing detection method is large in error is solved.

The application discloses a high-speed high-load low-vibration multi-engagement-zone gear and a tooth profile design method thereof, wherein the high-speed high-load low-vibration multi-engagement-zone gear comprises a first gear and a second gear, a tooth profile curve of the first gear comprises a first tooth crest curve segment L3, a first involute curve segment L2 and a first tooth root curve segment L1, a tooth profile curve of the second gear comprises a second tooth crest curve segment L3', a second involute curve segment L2' and a second tooth root curve segment L1', and the first tooth crest curve segment L3 and the second tooth root curve segment L1' are continuously engaged, the first involute curve segment L2 and the second involute curve segment L2' are continuously engaged, and the first tooth root curve segment L1 and the second tooth crest curve segment L3' are continuously engaged during the engagement of the first gear and the second gear. The application can effectively bear higher load, improves the load bearing capacity and the end face coincidence degree of the gear pair, and can make the transmission process more stable and better adapt to high-speed working conditions.

The utility model discloses a variable diameter variable pitch screw rotor, including intermeshing left rotors and right rotors, the end face profile of left rotors with right rotors is same, all by 7 curves first and last connected closed, wherein 7 curves include involute section AB, circular arc section BC, dedendum circular arc section CD, circular arc section DE, cycloid equidistant curve section EF, dedendum circular arc section FG and circular arc conjugate curve section GA, the circular arc BC of left rotors is intermeshed with the circular arc conjugate curve A'G' of right rotors, and the rest line sections are sequentially intermeshed according to the rotating direction of left rotors and right rotors respectively, the screw pitch of left rotors and right rotors is segmented along the axial direction, the left rotors are conical along the air inlet end to the air outlet end, and the right rotors are conical along the air inlet end to the air outlet end. The utility model further provides a vacuum pump. The device provided by the utility model can effectively improve the internal compression ratio and efficiency of the vacuum pump.

The invention provides a carburized gear tooth crest modification and shot peening composite strengthening method, which belongs to the field of gear precision machining and manufacturing, and is characterized in that the part, close to the tooth crest, of a modified tooth surface is subjected to modification, and secondary shot peening strengthening with different shot peening strengths is carried out on a modified gear. The method specifically needs to preset a certain point of a tooth surface as a tooth crest modification starting point; according to the starting point, an arc curve tangent to a tooth surface involute is established to serve as a tooth top modification curve; establishing a gear load analysis model to perform parameter optimization on the preselected modification starting point and the circular curve radius; carrying out high-precision modification processing according to the optimally designed modification parameters; shot peening strengthening is conducted on the gear subjected to shape modification machining; and finally, detecting the surface performance and the fatigue performance of the gear. Tooth top modification and shot peening strengthening can be combined for use, the gear surface is subjected to combined strengthening, the tooth surface performance of the machined gear is improved, and the contact fatigue performance and the bending fatigue performance of the gear can be improved at the same time.

The utility model discloses a three -section type conical screw rotor, three -section type conical screw rotor is divided into suction section, compression section and exhaust section in proper order along screw axial direction, the suction section is equal cross section and equal pitch along screw axial direction, the compression section adopts and is variable cross section and variable pitch along screw axial direction, the exhaust section is equal cross section and equal pitch along screw axial direction, the cross section width of suction section along screw axial direction is greater than the cross section width of exhaust section along screw axial direction, the end face profile equation of each section is same, and all are by five curves of abutting together closed, and the five curves include involute section AB, addendum circle arc section BC, long amplitude outside cycloid section CD, dedendum circle arc section DE and point conjugate curve section EA. The utility model also provides a vacuum pump. The device of the utility model can effectively reduce the noise of vacuum pump, reduce the clearance backflow, thereby improve its reliable stability and practical life.

The machining method comprises the following steps that a disc type tooth-shaped milling cutter is adopted to be fixed to a machine tool spindle, and a gear blank is installed on a device capable of dividing teeth and rotating at a certain angle; the disc-type tooth-shaped milling cutter does linear motion and rotary motion at the same time, the linear motion speed of the disc-type tooth-shaped milling cutter is set to v1, the angular speed at the gear milling pitch circle of the gear blank is converted into the linear speed, namely, the pitch circle linear speed of the gear blank is v2, and the v1 and the v2 are the same in direction and equal in speed; and the arc involute tooth-shaped structure with the symmetrical middle position is obtained. The middle-position arc cylindrical gear can replace herringbone teeth, is good in manufacturability and low in manufacturing cost, can be transformed through numerical control milling equipment, is more stable and lower in noise compared with a cylindrical gear, and meanwhile, the number of meshed teeth is larger.

The invention discloses a calculation method for mutual conversion of the cross-ball distance and the arc tooth thickness of an asymmetric displacement helical gear, and the method is a numerical calculation method provided by utilizing the property of an involute and the contact property of a space sphere and a space helical surface, and does not need to assist the measurement of the cross-ball distance through a three-dimensional model. And the design efficiency of the asymmetric deflection helical gear can be effectively improved. According to the calculation method provided by the invention, the actual tooth thickness can be quickly calculated through the measured cross-ball distance in the machining and manufacturing stage of the gear, and the machining precision of the asymmetric deflection bevel gear can be conveniently evaluated.

The present invention relates to a spiral for a spiral compressor and a spiral compressor with such a spiral. The spiral compressor (100) has a first spiral (10) and a second spiral (20), wherein the second spiral (20) and the first spiral (10) interact to form compressor chambers for compressing a medium. The first spiral (10) is a stationary spiral, and the second spiral (20) is an orbiting spiral. The first spiral (10) and the second spiral (20) each have an end plate (29) and a spiral turn (21).At least the outer surfaces (222) or the inner surfaces (221) of the spiral screw (21) of at least one of the first spiral (10) or the second spiral (20) use an involute as a reference for generating at least the outer surfaces (222) or the inner surfaces (221), wherein the distance between the at least one outer surface (222) or inner surface (221) of the spiral (21) and the involute gradually increases from a predetermined point between the start point and the end point of the involute to the end point of the involute along the generation line of the involute. The spiral and the spiral compressor improve the sealing effect between the turns of the spiral.

The utility model belongs to the technical field of mineral separation, and discloses a rotor suitable for a flotation machine. The rotor comprises a central shaft, a fixed disc and a plurality of blades; the fixed disc is fixedly arranged on the central shaft in a sleeving manner; the blades are arranged in the circumferential direction of the center shaft at intervals, the first side face of any blade is fixedly attached to the outer circumferential wall of the center shaft, and the second side face of any blade is fixedly attached to the lower side wall of the fixing disc. Wherein the first side face is defined as the side face, close to the center shaft, of any blade, and the second side face is defined as the side face, close to the fixing disc, of any blade; the lower side wall of the fixed disc is of an arc-shaped structure protruding towards the direction of each blade; a plurality of notches are formed in the sides, away from the center shaft, of the blades in the axial direction of the center shaft, and the opposite faces of the first side faces of the blades form an involute structure. According to the utility model, the wear rate of the rotor can be reduced, and the mineral separation efficiency can be effectively improved.

The present invention discloses a method for modifying the tooth profile of a friction plate in a liquid-viscous speed regulating clutch, comprising the following steps: step 1, radial modification of external teeth: when radial deformation occurs to the external teeth of the friction plate, tooth top modification is adopted; three coordinate points after modification are obtained by the intersection of the involute equation and the tooth top circle equation and the deformation amount, the three points are connected by a hyperbola to obtain a modification curve, and radial repair of the external teeth is performed according to the modification curve; step 2, radial modification of internal teeth: when radial deformation occurs to the internal teeth of the friction plate, a radial displacement compensation mechanism is provided to compensate for the radial deformation, and radial modification of the internal teeth of the friction plate is performed; step 3, axial modification of internal teeth: when axial deformation occurs to the internal teeth of the friction plate, a displacement correction method is adopted to increase the tooth thickness for repair. The present invention takes into account the modification of deformation of the friction plate under different working conditions, improves the tooth contact stress and extrusion stress, and solves the problem that the friction plate teeth can still transmit normally after deformation under different working conditions.

The spiral energy storage spring and the compression spring are integrated inside, or the spiral energy storage spring, the magnetic spring and the planar spring are integrated inside, so as to realize energy storage and passive flexibility, reduce driving consumption and meet the requirement of driving agility.SOLUTION: Disclosed is a flexible joint based on an elastic element, including an involute small-tooth-number difference reducer, a spiral energy storage spring, and a flexible output module / composite flexible output module. The involute small-number-of-teeth difference reduction gear employs only an eccentric input shaft, a pair of involute internal tooth rings, and an involute planetary gear to achieve oscillation and rotation motions of the involute planetary gear. The power output of the output disc is transmitted by the interaction of the column pin and the first column pin working hole of the involute planetary gear or the second column pin working hole of the output disc. The accuracy requirement can be easily met only by the meshing form of the pair of gears, the axial dimension is compact, the pair of gears adopt involute tooth profile, and the manufacturing cost is low.SELECTED DRAWING: Figure 1