210 results about "Gear manufacturing" patented technology

The invention discloses a production line optimization adjustment method and system based on gear manufacturing quality detection, and relates to the technical field of production line optimization adjustment. Comprising the following steps: detection division: arranging a first detection mechanism and a second detection mechanism, and respectively detecting surface and internal flaws of a gear to obtain a first detection item and a second detection item; and defect classification: carrying out grade division on the gear through a division method, dividing the gear into at least two grades, and obtaining at least two gear classification items. When quality detection is carried out on the production line, the value-added items are set, different value-added items are given to gears of different grades respectively, and when the detected gears are of different grades, the operation speed of the production line is increased or reduced according to the set value-added items, so that the detection speed of the production line is increased, and when a defective gear is detected, the detection efficiency of the production line is improved. And flaws are detected more carefully in a mode of reducing the running speed of a production line.

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 a marking device and a marking method for manufacturing a mechanical part gear, and relates to the technical field of gear marking. The device comprises a conveying assembly; the conveying assembly comprises a base, a first rotating shaft is rotationally connected to the top of the base, first supporting plates are symmetrically and fixedly connected to the top of the base, and a tray rotationally connected with the first rotating shaft is fixedly connected between the two first supporting plates. The hydraulic cylinder is controlled to move up and down in a reciprocating mode, so that the conveying disc intermittently feeds materials to the position under the laser marking machine, meanwhile, intermittent discharging of marked gears is completed, and meanwhile, the discharged gears are pushed away through reciprocating movement of a U-shaped push plate in the pushing assembly; according to the gear marking device, the marking device is arranged, so that discharging of the marked gear is completed, the mechanical degree of feeding, discharging and discharging in the gear marking operation becomes high, the labor amount of workers is reduced, and then the production efficiency is effectively 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 discloses a preparation method of a high-precision small gear assembly, which comprises the following steps: S1, selecting metal powder, mixing the metal powder with a high-molecular binder in proportion, mixing and uniformly preparing a granulation feed, and finally performing quality inspection on the feed to ensure that the feed is suitable for a subsequent forming process; s2, after the granulation feed is added into an injection molding machine, temperature and pressure parameters are adjusted, it is ensured that the material uniformly flows into a mold, the high-precision mold is used, the dimensional tolerance is controlled within + / -3 micrometers, the material fluidity needs to be kept in the injection process to prevent defects, the mold is cooled after injection is completed, and the material is obtained; the gear manufacturing precision can be improved, the surface smoothness is improved, flaws are reduced, it is guaranteed that the product dimensional tolerance meets the national standard grade requirement, meanwhile, the defects and deformation of a finished product are reduced through strict process control, it is guaranteed that a gear assembly has the longer service life and the higher performance stability, and the gear assembly is suitable for batch high-precision manufacturing.

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 relates to a precision detection device for gear processing, which is suitable for detecting the dynamic performance and single tooth precision of a gear, and comprises a base, a rotating bracket, a fixed block, a motor, a reduction gearbox, a test gear, a to-be-tested gear, a main measuring rod, a plurality of measuring rods and the like. High-precision detection of gear dynamic balance, vibration parameters and the tooth outer end and the contour line of a single gear is achieved, the reduction gearbox reduces the rotating speed of the gear and strengthens torque control, and the gear thickness difference design is matched, so that the multiple measuring rods can slide along the tooth outer end of the gear, tooth surface deformation and the contact state are accurately detected, and the device is made of high-carbon low-alloy tool steel. The gear detection device has high strength and wear resistance, adapts to various gear specifications, can output detection data and analysis results in real time, is simple to operate, high in detection precision and high in applicability, and can be widely applied to the fields of gear manufacturing, quality detection and maintenance.

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 discloses equipment for precisely polishing a gear, and relates to the technical field of gear manufacturing. The device comprises a base, a grinding cylinder is arranged at the top of the base, and grinding teeth are mounted in the grinding cylinder; and a collecting assembly is arranged at the top of the base and comprises a collecting groove, the collecting groove is formed in the grinding cylinder, an electromagnet is installed in the collecting groove, and a discharging hole is formed in the bottom of the collecting groove. Through the arrangement of the collecting assembly, chippings generated by grinding can be collected when a to-be-machined gear sleeve moves into the grinding barrel to be ground, when grinding teeth are meshed with the to-be-machined gear, the grinding barrel horizontally moves left and right to drive the grinding teeth to grind the to-be-machined gear, and the to-be-machined gear is cleaned through a cleaning brush while grinding is conducted. And residual metal powder on the surfaces of the polished teeth is pushed left and right to be discharged into a collecting groove, the metal powder is adsorbed through an electromagnet, dust is prevented from being transmitted along with the gears, and the abrasion condition is reduced.

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 present invention provides a gear circulation chamfering device, which relates to the technical field of gear manufacturing, comprising a base, connecting arms are fixedly installed on both sides of the upper end of the base, a support platform is arranged between the two connecting arms, and a circular plate is arranged above the support platform, and the circular plate is rotated by starting servo motor 2 in the support platform, and the gear workpiece is driven to rotate by the rotation of the circular plate, and the relative position of the tooth groove of the gear workpiece and the movable block is changed by the rotation of the gear workpiece, so that all the tooth grooves of the upper end of the gear workpiece can be chamfered and polished by the movable block, and after the chamfering and polishing of the tooth grooves of the upper end of the gear workpiece is completed, the gear workpiece is flipped by a flipping drive assembly, so as to facilitate the chamfering and polishing of the tooth grooves at the bottom end of the gear workpiece, and there is no need for staff to release and clamp the gear workpiece with a clamping rod and a spring, thereby eliminating cumbersome operation steps and improving the efficiency of chamfering and polishing the gear workpiece.

The utility model relates to the technical field of gear manufacturing, and discloses a tooth groove edge grinding device for gear manufacturing. The tooth groove edge grinding device for gear manufacturing comprises a base, a connecting block is installed at one end of the upper portion of the base, a mounting shell is connected to one side of the connecting block, a sliding block is movably connected to the inner wall of the mounting shell, a supporting seat is connected to the upper portion of the sliding block, and a fixing frame is installed on the upper portion of the supporting seat; an electric push rod is mounted at one end of the inner wall of the mounting shell, a connecting shell is mounted above the base, an auxiliary push rod is movably mounted on the inner wall of the connecting shell, an auxiliary seat is connected to one end of the auxiliary push rod, a screw rod is mounted above the auxiliary seat, and two sets of nuts are mounted on the outer surface of the screw rod; one side of the nut is connected with a mounting sleeve, and the outer surface of the mounting sleeve is connected with an auxiliary block. The use stability of the fixing frame is conveniently improved, the gear tooth groove edge grinding work efficiency is conveniently improved, and the use efficiency of gear tooth groove edge grinding equipment is improved.

The invention relates to the technical field of alloy smelting, heat treatment and machining, and discloses a machining process of a stainless steel gear for a small-tooth-difference planet gear transmission mechanism, which comprises the following steps: S1, refining a stainless steel ingot, carrying out desulfurization and dephosphorization treatment, and then pouring into a stainless steel rod; s2, roughly turning the stainless steel rod and dividing the stainless steel rod into gear blank sections; s3, the gear blank section is subjected to heat treatment, after solution treatment and heat preservation of the gear blank section are completed, the gear blank section is rapidly cooled to 32 DEG C or below in a water quenching or oil quenching or air cooling mode, then precipitation hardening aging treatment is conducted on the gear blank section, and then the gear blank section is air-cooled to the room temperature; s4, finish turning of the gear blank section; s5, gear manufacturing is conducted, specifically, the gear blank section is machined into a gear through a gear shaping or gear hobbing machining method; s6, low-temperature annealing is conducted, and then the gear is air-cooled to the room temperature; s7, accurate grinding is conducted, specifically, the surface except the tooth part is accurately ground to the design size; and S8, gear grinding is conducted, specifically, the tooth profile of the gear is ground to the finished product size.

The invention belongs to the field of gear machining, and relates to a secondary tool setting device of full-automatic tooth manufacturing equipment based on visual recognition, which is used for solving the problems that machining of intermediate parts is interrupted in the gear machining process, and secondary tool setting cannot be carried out on the original position after disassembly. The device is characterized in that a controllable high-precision motor (1) is in transmission connection with a gear manufacturing equipment main shaft (2), and a machined gear (3) is mounted on the gear manufacturing equipment main shaft (2); the industrial camera (5) is connected with the grating sliding rail (4) and can slide up and down along the grating sliding rail (4) to the position aligned with the center line of the gear manufacturing equipment main shaft (2), so that the center line of a lens of the industrial camera (5) and the center line of the gear manufacturing equipment main shaft (2) are located on the same straight line, and the angular position of the machined gear (3) is captured through the industrial camera (5). A cable of the industrial camera (5) penetrates through the grating sliding rail (4) to be connected with the controllable high-precision motor (1), and the industrial camera (5) controls the controllable high-precision motor (1) to rotate through the cable. The tool setting device is suitable for secondary machining tool setting of the gear.

To provide a manufacturing method that enables manufacture of a gear with accuracy high enough to enable application to a gear device while having the advantage of a molded article formed from a fluid material, the gear, and the deflection meshing type gear device having the gear like this.SOLUTION: A method of manufacturing a gear includes: an intermediate product formation step (J1) of forming a gear intermediate product (IN) by solidifying a fluid material; and a tooth formation step (J2) of forming a tooth (23 g) in the gear intermediate product (IN) by cutting machining. The gear (23) has a fluid-solidified part that has an outer surface formed by solidifying the fluid material, and a cutting-machined part, the outer surface of which is cutting-machined. The tooth (23 g) is included in the cutting-machined part.SELECTED DRAWING: Figure 3

The utility model relates to the technical field of automobile gear manufacturing, in particular to an automobile gear manufacturing burr removing device which comprises a frame, air cylinders fixedly installed at the top and the bottom of the frame, a connecting frame fixedly installed at the ends of inner rods of the air cylinders, a motor fixedly installed below the connecting frame, a grinding disc fixedly installed on a rotating shaft of the motor and a through groove formed in the frame. The through groove is opposite to the two grinding discs, and a fan is fixedly installed in the through groove. According to the gear burr removing device, the distance between the grinding discs is controlled through stretching and retracting of the air cylinder, burrs of gears of different sizes can be removed, universality is good, the gears can work up and down at the same time, the burr removing efficiency is high, and the burrs are blown away when the burrs are removed.

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.