161 results about "Gear manufacturing" patented technology

A large-sized gear machining accuracy measurement method. The method comprises: measuring, by using a flexible articulated arm, the accuracy of a gear machined by means of a large-sized gear manufacturing machine tool; securing a standard spherical ball on a rotary table or a machine tool spindle headstock, and rotating the rotary table to a plurality of positions; then, measuring the centers of the standard spherical ball at different positions by using the flexible articulated arm, and fitting the coordinates of these centers to establish a workpiece coordinate system; and finally, on the basis of the established coordinate system, extracting points on a tooth surface, and evaluating the tooth profile, tooth lead and tooth pitch accuracy of the gear. By using the method, the machining accuracy of large-sized gears with diameters of 3,000 mm or above can be accurately evaluated in a workshop environment, thereby providing data support for the accuracy evaluation, installation and commissioning, error compensation, etc., of a large-sized gear manufacturing machine tool.

The grinding wheel grinding face gear tool setting method based on on-machine measurement comprises the steps that an initial measurement coordinate system of a face gear is established; a face gear manufacturing error is considered, and a measurement coordinate system of the face gear is optimized through an iteration method; based on errors such as tooth profile, tooth pitch and tooth thickness of the face gear, a face gear tooth surface uniform grinding optimization model is established, the position of the measurement coordinate system is further optimized by adopting a nonlinear optimization method, and a final measurement coordinate system is obtained; and finally, determining the position of the grinding wheel grinding face gear according to the basic model of the grinding wheel grinding face gear. The tool setting precision and efficiency of the grinding wheel and the face gear can be improved, and the uniformity of the tooth surface grinding amount of the face gear can also be improved.

The invention discloses an involute helical gear tooth surface waviness rapid detection method based on wavelet transformation, relates to the technical field of gear measurement and evaluation, and aims to solve the problems of low efficiency, insufficient anti-interference capability and limited extraction precision in existing tooth surface waviness detection. High-density data sampling is carried out on a specified tooth surface of an involute helical gear, a multi-scale characteristic decomposition signal of wavelet transform is utilized, a tooth surface waviness signal is separated from complex morphology characteristic components, and in combination with a threshold optimization algorithm, detail characteristics of waviness are effectively reserved, and meanwhile interference of non-correlation signals is restrained. In addition, efficient data processing and real-time waviness feature extraction are realized by designing a rapid analysis process and an automatic parameter adjustment mechanism. The method is suitable for gear quality detection in a batch production environment, and provides a reliable basis for defect diagnosis and optimization in a gear manufacturing process. Compared with a traditional detection method, the method has remarkable advantages in the aspects of detection precision, stability and speed.

The invention provides a heat balance regulation and control method for a high-precision worm grinding wheel gear grinding machine for energy conservation and efficiency improvement. The method comprises the steps of establishing an electric-mechanical-thermal energy balance matrix equation of the worm grinding wheel gear grinding machine, carrying out a gear grinding experiment and carrying out data acquisition and processing, establishing a thermal energy balance equation, establishing a comprehensive energy efficiency model, establishing a comprehensive optimization model, solving the optimization model and the like. The heat balance regulation and control strategy of the worm grinding wheel gear grinding machine is obtained through the method, and a guidance basis is provided for energy conservation and efficiency improvement of the gear grinding machine. And a theoretical model and a guidance basis are provided for heat balance regulation and control of the energy-saving worm grinding wheel gear grinding machine. The device is high in universality and wide in applicability, and can be subsequently popularized and applied to other gear manufacturing machine tools.

The invention relates to the field of gear manufacturing and machining, in particular to a gear manufacturing lathe facilitating waste cleaning, compressing and recycling, which comprises a gear machining lathe, the gear machining lathe comprises a machine body, mounting seats are mounted on two sides of the middle of the top end of the machine body, and working frames are mounted on the tops of the mounting seats; air cylinders are fixedly connected to the tops of the working frames correspondingly, mounting plates are fixedly connected to the telescopic ends of the bottoms of the air cylinders correspondingly, the mounting plates are slidably connected to the front portions of the working frames correspondingly, double-head motors are mounted on the front portions of the mounting plates correspondingly, and gear hobs are fixedly connected to the peripheries of the driving ends, close to the sides, of the double-head motors correspondingly. When chippings are accumulated in the middle bin and reach a certain weight, the chippings can exceed the maximum bearing load of a spring in a rubber plate, so that the rubber plate can be'crushed ', the rubber plate is bent and deformed downwards, at the moment, the chippings can fall into the treatment bin to be subjected to centralized compression treatment, and therefore single-time batch compression can be achieved.

The invention provides an asymmetric gear worm grinding wheel gear grinding heat equivalent simulation analysis and process parameter optimization method. The method comprises the steps of establishing a transient equivalent simulation analysis model of asymmetric gear worm grinding wheel gear grinding, determining the grinding heat influence degree of different process parameters on tooth surfaces on the two sides, obtaining an optimal process parameter solution set and the like. According to the method, the difference of grinding heat of tooth surfaces on the two sides in the asymmetric worm grinding wheel tooth grinding machining process is considered, technological parameter optimization is carried out, and a theoretical model and a guidance basis are provided for guaranteeing the asymmetric gear tooth grinding machining performance. The method is high in universality and wide in applicability, and can be subsequently popularized and applied to the manufacturing process of other asymmetric gears or other types of gears.

The invention relates to a polishing device for gear deburring, and relates to the technical field of gear manufacturing. The device comprises a working barrel, an inner gear, a rotating motor and a mounting frame, the inner gear is horizontally arranged on the working barrel, a moving assembly is arranged on the working barrel and used for driving the inner gear to move up and down, the rotating motor is arranged on the working barrel, an output shaft of the rotating motor is coaxial with the inner gear, and the rotating motor is connected with the mounting frame. The rotating motor is used for driving the mounting frame to rotate with the rotating motor as the axis, the mounting frame is used for mounting a gear, and the inner gear can be meshed with the gear. The gear grinding device has the effects that gear tooth grooves in the whole gear can be ground by moving the gear by one circle, and the working efficiency is high.

The invention relates to the technical field of gear machining, in particular to an anti-disengaging clamp for gear manufacturing. Comprising an operation table, the operation table is in sliding connection with symmetrically-distributed sliding frames, the operation table is provided with a first power module for driving the symmetrically-distributed sliding frames to move, the sliding frames are rotationally connected with rotating shafts, and the operation table is provided with a second power module for driving the symmetrically-distributed rotating shafts to rotate. The rotating shaft is fixedly connected with pressure discs, the symmetrically distributed pressure discs are used for clamping a straight gear, the outer side of one pressure disc is fixedly connected with a first notch circular ring, the first notch circular ring is provided with uniformly distributed rectangular grooves, and the rectangular grooves are slidably connected with limiting plates. The spur gear is preliminarily clamped through the pressure disc, the limiting plate and the pressurizing plate are clamped between adjacent teeth of the spur gear, the spur gear is prevented from sliding relative to the pressure disc, and effective constraint on radial displacement and circumferential rotation of the spur gear is increased.

The utility model relates to gear milling equipment for an outer rotor of a lubricating oil pump, which is mainly used for high-precision gear milling of the outer rotor of the lubricating oil pump. The equipment comprises an indexing rotating table and a supporting stand column, a horizontal mechanical sliding table is arranged at the bottom of the supporting stand column, and the horizontal mechanical sliding table and the indexing rotating table are arranged in a matched mode. Two symmetrically-distributed gear manufacturing tools are arranged above the indexing rotary workbench and used for fixing a gear to be machined. A vertical mechanical sliding table is arranged above the supporting stand column, a gear milling supporting frame is arranged on the outer side of the vertical mechanical sliding table, and a milling head is installed on the gear milling supporting frame. The indexing rotating table can drive the planetary reducer through the servo motor to achieve accurate indexing. The gear manufacturing tool comprises an upper positioning block, a matching groove and a correction hole and is used for accurately positioning and fixing a gear. The equipment has the characteristics of high automation degree, high machining precision and high stability, and is suitable for machining the outer rotors of the lubricating oil pumps on a large scale.

The invention discloses a segmented combined type worm grinding wheel based on spiral surface structuring and a laser finishing method, and belongs to the technical field of precise gear grinding. The working surface of the inner side of a spiral tooth groove of the worm grinding wheel at least comprises a section of structured area and a section of unstructured area in the axial direction; the structured area is provided with a crescent groove used for forming a grinding fluid storage and abrasive dust discharge channel in the grinding process. And the unstructured area keeps a continuous grinding surface and is used for finishing the surface of the machined workpiece in the structured area. According to the method, the laser processing head is controlled through multi-axis linkage to accurately describe an arc-shaped processing track in a spiral expansion coordinate system, the morphology consistency and the space precision of grooves are guaranteed, and the manufactured worm grinding wheel has good cooling, chip removal and accurate grinding performance and is suitable for high-efficiency and high-precision gear manufacturing.

This invention provides a broach for gear machining and its finishing device, relating to the field of gear manufacturing technology. The broach and finishing device include a bed, a drive unit, a CNC system, a clamping device, a coolant storage tank, a high-pressure air supply device, a dust extraction device, and two sets of cooling pumps. When the coolant cooling effect is insufficient, the invention increases the coolant flow rate through an electrically controlled flow valve to improve the cooling effect. If necessary, forced cooling can be achieved by simultaneously activating two sets of cooling pumps, significantly enhancing the cooling effect. The high-pressure air supply device provides high-pressure air to the compressed air nozzle, which is then sprayed onto the surface of the CBN grinding wheel through the jet chamber outlet to clean the surface, effectively reducing clogging and the frequency of grinding wheel dressing. Simultaneously, the dust extraction device, dust extraction pipe, and dust extraction hood remove dust from inside the grinding wheel hood, reducing floating dust and preventing dust from adhering to the grinding wheel surface and entering the grinding area.

A method for manufacturing a wave gear device comprises: a hot forming step of hot forming an alloy steel composed of nickel, copper, molybdenum, and silicon into a first molded product having a silk hat-type housing shape at a first temperature of 950 to 1300°C; a normalizing step of isolating the first molded product at the first temperature for a predetermined time and, after the isolating time has elapsed, slowly cooling the first molded product to a second temperature of 750 to 900°C; an austempering step of isolating the first molded product at the second temperature and then cooling it to a third temperature of 250 to 400°C to form residual austenite in the first molded product; a heat treatment step of isolating the first molded product that has undergone the austempering step at the third temperature and then cooling it at room temperature to stabilize the microstructure of the first molded product; and a gear forming step of turning and toothing the first molded product that has undergone the heat treatment step to form a second molded product having a soluble external gear shape. The method comprises a step and a trip step of applying impact to the surface of the second molded product to induce a processing-induced transformation in some of the austenite remaining in the second molded product, thereby transforming the surface of the second molded product into martensite.

The present application relates to the field of gear manufacturing equipment, specifically is a kind of large gear heat treatment equipment, including fixture tooling, fixture tooling left side is provided with vertical, transverse moving load block by track drive assembly, load block right side lower part is fixedly installed with support plate, the processing equipment further includes the induction unit of different specifications gear slot by quick release replacement and adaptive compensation combined mode, and the decarburization unit for scraping off carbon, the present application adopts the way of quick release replacement induction block to adapt to different specifications gear slot heating, and two induction blocks are driven by connecting assembly to realize micro distance adjustment, so that the working surface of induction block always maintains constant spacing with gear slot side, guaranteeing quenching layer depth and uniformity, during the induction block movement heating process, the tooth slot side is cleaned in real time by scraping spring piece, effectively maintain the stability of working surface and gear slot gap, further improve the heat transfer performance.

The invention provides a differential lock on-line detection system, and relates to the technical field of differential mechanism production, the differential lock on-line detection system comprises a rack, two conveying chains, a bottom support, a clamping plate and a storage battery, each conveying chain comprises chain links which are rotatably connected in sequence and rollers which are rotatably connected to the middles of the chain links, and the bottom support and the clamping plate are located above and below the conveying chains respectively; a plurality of positioning guide rods are fixedly arranged on the bottom support, guide shaft sleeves matched with the positioning guide rods are fixedly arranged on the clamping plate, the positioning guide rods are inserted into the guide shaft sleeves, a driving mechanism capable of driving the bottom support and the clamping plate to be close to or away from each other is arranged between the bottom support and the clamping plate, and a roller located between the bottom plate and the clamping plate can be clamped when the bottom plate and the clamping plate are close to each other; the differential lock to be detected is detachably assembled on the bottom support, the storage battery is arranged on the bottom support or the clamping plate, and the storage battery is provided with a power connection jack matched with the power connection plug of the differential lock. The method has the advantages of high detection efficiency and the like.

The invention discloses a manufacturing method of a powder metallurgy high-speed gear. The manufacturing method comprises the following steps of raw material mixing, wherein raw materials of a gear body and raw materials of a copper shaft sleeve are mixed in proportion; compression molding: filling the gear main body die cavity with a raw material of the gear main body to form a gear main body die blank; filling a raw material of the copper shaft sleeve into the copper shaft sleeve die cavity to form a copper shaft sleeve die blank; follow-up treatment is conducted, specifically, the formed gear body mold base and the copper shaft sleeve mold base are sintered; the sintered gear body is subjected to heat treatment, and the sintered copper shaft sleeve is subjected to oil immersion; assembling: slowly pressing the copper shaft sleeve in the gear shaft sleeve hole, and aligning the bottom end of the copper shaft sleeve to the bottom surface of the gear main body after pressing; the production process can be greatly simplified, the production period is remarkably shortened, the manufacturing cost can be effectively reduced, and double optimization of performance and economical efficiency is achieved.

The present invention relates to the field of gear manufacturing equipment, in particular to a gear milling machine for gear manufacturing, including a gear milling machine, the gear milling machine including a bottom bin, a protective cover fixedly connected to the top of the bottom bin, a stand fixedly connected to the middle and rear part of the top of the bottom bin, a fixed bin fixedly connected to the rear part of the stand, an air pump installed inside the fixed bin, a diversion pipe installed at the air pump outlet, connecting pipes fixedly connected to the middle parts of both ends of the diversion pipe, the connecting pipes are arranged on the inner side of the opening, the openings are opened on both sides of the middle and lower part of the fixed frame, the end of the connecting pipe away from the diversion pipe is fixedly connected to the air bin, the air bin is rotatably connected to the outer periphery of the connecting shaft, the present invention enables the upper outlet to guide the airflow through the impact pipe, thereby cleaning the cutting point between the milling cutter and the end face gear, avoiding the accumulation of debris during milling, and affecting the milling quality.

This utility model discloses a surface degreasing device for gear production, relating to the technical field of gear production equipment. The utility model includes a cleaning tank, and further includes: an degreasing section disposed on the cleaning tank for holding the gears to be degreased; a rotating section disposed inside the cleaning tank for driving the degreasing section to rotate; and a stirring section located inside the cleaning tank for stirring the mixture of cleaning fluid and oil. After the cleaning fluid is poured into the cleaning tank, the gears to be degreased are poured into the degreasing section, and then the rotating section drives the degreasing section to rotate, ensuring uniform contact between the gears and the cleaning fluid. This utility model, by incorporating a rotating section, solves the problem in existing degreasing devices where it is inconvenient to rotate the gears in the cleaning fluid, resulting in uneven contact between the surface of each gear and the degreasing agent, thus affecting the overall cleanliness of the gears.

The differential mechanism comprises a shaft pin, a main gear and a retainer, the main gear comprises a containing cavity, the inner wall of the containing cavity is provided with a matching part extending in the radial direction of the main gear, the matching part is provided with an installation groove, the installation groove is used for installing the shaft pin, and the retainer is installed on the main gear. Wherein the retainers are arranged on the two opposite sides of the main gear in the axial direction of the main gear respectively, each retainer comprises a main body part and an extending part, the extending parts are arranged in the circumferential direction of the main body parts and extend in the radial direction of the main gear, and each retainer is provided with an extending part extending in the radial direction of the main gear. And the extension part is welded with the main gear. According to the differential mechanism, the use of main gear materials can be reduced, the weight of the main gear is effectively reduced, the cost is reduced, and the manufacturing feasibility of the main gear is improved.

This invention belongs to the field of metallurgical technology and relates to a production method for 22CrMoNbH heavy-duty niobium-containing gear steel. The method comprises three parts: chemical composition design, smelting production, and rolling production. The smelting process employs a four-stage process of "converter smelting – LF refining – RH vacuum degassing + continuous casting," precisely controlling impurity content and alloy uniformity. The rolling process utilizes "temperature-controlled rolling – slow cooling," optimizing microstructure and properties through dual electromagnetic stirring, temperature-controlled rolling, and slow cooling treatment. This invention, through niobium microalloying and synergistic process innovation, achieves a gear steel grain size ≥8 and a hardenability bandwidth ≤3HRC, significantly improving comprehensive mechanical properties and fatigue resistance. It can directly replace imported high-end heavy-duty gear steel, offering good production economics and is suitable for heavy-duty gear manufacturing in the automotive, heavy machinery, and other fields.

To provide a gear wheel that can improve toughness of a tooth bottom and a dedendum to improve durability of a gear wheel, and to provide a method for manufacturing a gear wheel that can improve workability of manufacturing operation of a gear wheel that can improve durability.SOLUTION: A gear wheel 1 includes: a tooth bottom 2A; a dedendum 2B communicated to the tooth bottom 2A; an addendum 2C; a tooth flank 2D formed between the dedendum 2B and the addendum 2C; a carburized layer 5 provided on the tooth flank 2D; and a non-carburized part 6 provided in a dedendum part 3, where the dedendum part 3 has a surface hardness that is lower than the hardness of the tooth flank 2D.SELECTED DRAWING: Figure 3

The utility model relates to the technical field of sun gear manufacturing, and discloses a sun gear hub gear welding detection device, which comprises a positioning feeding part, the detection assembly comprises a detection table, a transfer part, a clamping part, an ultrasonic probe and a positioning rotating part, the detection table is arranged on one side of the positioning feeding part, a detection groove is formed in the detection table, at least one part of the positioning rotating part is arranged in the detection groove, the transfer part is installed on the detection table, the clamping part is installed on the transfer part, and the ultrasonic probe is installed on the clamping part; the positioning discharging part is arranged on one side, far away from the positioning feeding part, of the detection table; the waste collecting box is arranged on the side, away from the detection table, of the positioning discharging part. According to the sun gear hub gear welding detection device, the transfer part controls the clamping part to clamp the to-be-detected welding piece on the positioning feeding part, the to-be-detected welding piece is transferred to the positioning rotating part to be detected under the control of the transfer part, the whole process is automatic, time and labor are saved, and the detection efficiency is greatly improved.

Provided is a technique capable of measuring a gear shape error. 【Solution means】The machine tool includes a control device configured to execute error measurement processing. The error measurement processing determines the approach start point and approach direction of a touch probe held by a tool holding device based on the posture of a workpiece machined into a gear shape held by a workpiece holding device, controls an actuator to move the touch probe in the approach direction from the approach start point, obtains the center position of the tip sphere of the touch probe when the touch probe contacts the surface of the workpiece due to the movement, determines a candidate value for the error between the gear shape and the target shape of the gear product, generates a cross-sectional model representing the cross-sectional shape of the tooth surface based on the candidate value, the target shape, and the posture, obtains the minimum distance between the cross-sectional model and the center position, changes the candidate value, and determines, as the error, a candidate value for which the absolute value of the difference between the minimum distance and the radius of the tip sphere is equal to or less than an allowable value.

The invention discloses low-heat-treatment-deformation hafnium microalloyed gear steel and a preparation method thereof, and belongs to the technical field of high-temperature carburized gear steel. The gear steel comprises the following components in percentage by mass: 0.17%-0.23% of C, 0.15%-0.35% of Si, 0.80%-1.10% of Mn, 1.00%-1.30% of Cr, 0.01%-0.10% of Ti, 0.02%-0.10% of Hf, less than or equal to 0.020% of P, less than or equal to 0.015% of S and the balance of Fe and impurities, and the ratio of Hf to Ti is controlled to be 0.4-1.5. The preparation method comprises the steps of smelting, continuous casting, rolling, controlled cooling and low-deformation heat treatment. Through Hf microalloying, the high-temperature stability of HfN / C and the thermal expansion property matched with a matrix are utilized, after carburization is conducted at the temperature larger than or equal to 930 DEG C, ASTM 8-grade or above superfine grains can still be kept, the quenching stress is remarkably reduced, the tooth direction deviation of the gear is smaller than or equal to 0.05 mm, unification of high-temperature efficient carburization and extremely low deformation is achieved, and the high-precision gear is suitable for manufacturing of new energy automobiles and other high-precision gears.

This invention discloses a surface cleaning device for gear processing, relating to the field of gear manufacturing technology. The device includes a main frame with a mounting platform on it. A feed conveyor and a discharge conveyor for conveying the gear to be cleaned are fixedly mounted on the surface of the mounting platform. A clamping and cleaning mechanism includes multiple rubber blocks mounted on the mounting platform for fixing the gear to be cleaned. Each rubber block is fixedly mounted on an L-shaped extrusion plate. The device also includes multiple cleaning brush cylinders fixedly mounted on the mounting platform for cleaning the gear to be cleaned. The cleaning brush cylinders rotate, and the gear to be cleaned rotates on its own axis to clean the gaps between the teeth of the gear. Simultaneously, the opposing rotation between adjacent cleaning brush cylinders provides thorough tangential cleaning of the gaps between the teeth. By applying forces in different directions, the dirt adhering to the gaps between the teeth is thoroughly scraped away, thereby improving the cleanliness of the gear to be cleaned.

This application relates to the field of micro-mechanical component manufacturing technology, and discloses a manufacturing process for a worm gear in a humanoid robot's dexterous hand, comprising: S1, preparing a sacrificial layer template with a three-dimensional negative mold and a micro-anchoring structure using photolithography; S2, conformally depositing a functional surface shell using atomic layer deposition (ALD) and forming corresponding prefabricated physical interlocks thereon; S3, depositing an intermediate bonding layer with a material composition gradient; S4, melting a metal material using additive manufacturing to form a structural body, wherein in S4, the high-temperature molten metal undergoes atomic diffusion to form metallurgical bonds when in contact with the intermediate bonding layer, and simultaneously fills into the prefabricated physical interlocks and solidifies to form a micro-mechanical interlock; and S5, removing the sacrificial layer template. This invention achieves a strong bond between the metal substrate and the ceramic shell through the synergistic effect of metallurgical bonding and micro-mechanical interlocks, producing a heterogeneous composite worm gear that is hard on the outside and tough on the inside, and is precisely formed.

The invention relates to the technical field of powder metallurgy equipment, in particular to gear manufacturing equipment for powder metallurgy manufacturing, which comprises a workbench, a discharging mechanism, a main hydraulic rod, an isobaric mechanism, an upper die rod assembly, a female die and a lower die rod assembly, the female die is fixedly mounted on the workbench, a middle-layer cavity is formed in the female die, and a first accommodating cavity is formed in the bottom end of the middle-layer cavity; a second containing cavity is formed in one side of the bottom end of the middle-layer cavity, and the discharging mechanism is installed at one end of the workbench. According to the invention, through the arrangement of the isobaric mechanism, the pressure intensity is the same when the die rod I, the die rod II and the die rod III extrude downwards, in the stamping process, the top end of the die rod V moves to the position flush with the inner bottom surface of the middle-layer cavity, the die rod II moves downwards relative to the die rod I, so that an embedding groove part is formed, and the die rod III moves upwards relative to the die rod I, so that a limiting part is formed in a die hole; and one-time stamping forming of the special-shaped gear of a three-layer structure is further achieved, the production efficiency is improved, and meanwhile the uniformity degree of the density of a gear blank is improved.

The invention discloses a face gear numerical control machining system and method, and relates to the technical field of face gear production, the face gear numerical control machining system comprises a machine shell, a workpiece and a machining part, the machining part comprises a mounting plate, a mounting shaft and a reciprocating motion module, the reciprocating motion module comprises a mounting sliding block, a grinding wheel is mounted on the mounting sliding block, and the grinding wheel is mounted on the mounting sliding block; after the workpiece is installed on the installation shaft through the key and the key groove, the installation sliding block moves from the initial position to the clamping position to automatically clamp the workpiece, then the workpiece reciprocates between the clamping position and the machining position along with the installation sliding block, and the workpiece rotates by a preset angle multiple times along with the installation shaft; when the workpiece is taken down, the mounting shaft is automatically unlocked along with the return of the mounting sliding block to the initial position, so that a gap is formed between the workpiece and the mounting shaft, the workpiece is conveniently replaced, and meanwhile, the mounting shaft rotates by one circle during machining, so that the relative angle of the mounting shaft is not changed when the workpiece is taken down.

This invention discloses a wear-resistant EPS worm gear, its manufacturing process, and its applications, belonging to the field of EPS worm gear manufacturing technology. From the inside out, it comprises a metal mandrel, a skeleton layer, and a wear-resistant gear ring. The skeleton layer comprises the following raw materials: 15-30% inorganic reinforcing fiber, 5-20% reinforcing filler, 5-15% polyethylene oxide-polydimethylsiloxane-polyethylene oxide triblock copolymer, 0.5-2.5% cyclotriphosphazene-PMMH-6 polymer, 0.1-0.8% antioxidant, 0.05-0.5% EBS wax, and the balance nylon. The wear-resistant gear ring comprises the following raw materials: 3-12% nano-ceramic precursor, 5-20% wear-resistant filler, 7-20% polymer fiber, 0.1-1.5% antioxidant, and the balance polyphenylene sulfide. This wear-resistant EPS worm gear possesses wear resistance, stable friction performance, excellent damping, and high and low temperature stability, and can be widely used in automotive electric power steering systems.

The invention provides a worm grinding wheel grinding asymmetric gear allowance accurate distribution method considering residual stress and machining efficiency. The method comprises the steps of building a local three-dimensional model of the asymmetric gear and the worm grinding wheel, obtaining a residual stress function relation, building a grinding specific energy model, building a comprehensive optimization model, solving the optimization model and the like. According to the method, a theoretical model and a guidance basis are provided for precise distribution of the asymmetric gear grinding allowance considering the machining quality and the machining efficiency. The method is high in universality and wide in applicability, and can be subsequently popularized and applied to other gear manufacturing processes.

The invention relates to the field of gear manufacturing equipment, in particular to a gear milling machine tool for gear manufacturing, which comprises a gear milling machine tool, the gear milling machine tool comprises a bottom bin, the top of the bottom bin is fixedly connected with a protective cover, the middle rear part of the top end of the bottom bin is fixedly connected with a vertical frame, and the rear part of the vertical frame is fixedly connected with a fixed bin; an air pump is installed in the fixing bin, a flow dividing pipe is installed at an air outlet of the air pump, connecting pipes are fixedly connected to the middles of the two ends of the flow dividing pipe and arranged on the inner sides of openings, the openings are formed in the two sides of the lower middle portion of the fixing frame, and air bins are fixedly connected to the ends, away from the flow dividing pipe, of the connecting pipes; according to the device, airflow can be guided out through the upper outlet through the impact pipe, cleaning of the cutting position between the milling cutter and the end face gear is achieved, and the situation that chippings are accumulated in the milling process, and the milling quality is affected is avoided.