Production equipment and production process of thin-wall internal and external tooth structure

Abstract

The invention provides production equipment and a production process of a thin-wall internal and external tooth structure, and relates to the technical field of part machining, the production equipment comprises a main machine, a tooth-shaped mold is rotatably arranged on the main machine, and an abutting mold is movably and rotatably arranged on the main machine and is coaxial with the tooth-shaped mold; the abutting die can axially move, is close to the tooth-shaped die so as to press a workpiece on the end face of the tooth-shaped die and is located between the tooth-shaped die and the abutting die, the number of the tooth beating pieces is two, the tooth beating pieces are symmetrically located on the two sides of the axis of the tooth-shaped die, and tooth beating wheels are rotationally arranged on the tooth beating pieces; the tooth punching piece can move in the axial direction of the tooth-shaped mold so that tooth punching can be conducted on the workpiece through the tooth punching wheel. According to the production equipment and the production process of the thin-wall internal and external tooth structure, a rolling technology is utilized, and rapid machining of the thin-wall internal and external tooth workpiece is achieved.

Description

Technical Field

[0001] This invention belongs to the field of parts processing technology, specifically relating to a production equipment and process for a thin-walled internal and external tooth structure. Background Technology

[0002] In the field of mechanical manufacturing, thin-walled internal and external gear structures are widely used in small transmission mechanisms, precision instruments, automotive parts, and other products. They are characterized by their compact structure, light weight, and high transmission efficiency, meeting the development needs of equipment miniaturization and lightweighting. With the improvement of industrial automation and the rapid development of the precision manufacturing industry, the market has placed increasingly higher demands on the machining accuracy, surface quality, and production efficiency of thin-walled internal and external gear structures, while also imposing more stringent standards on workpiece deformation control during the machining process.

[0003] Currently, the most common method for tooth profile machining in existing technologies is cutting, which includes various forms such as milling, hobbing, and shaping. This type of machining removes excess material from the workpiece by cutting with a tool, thereby forming the required tooth profile structure. It is widely used in the machining of thick-walled gears and gear profiles with good rigidity, and can achieve a certain degree of precision in tooth profile machining.

[0004] However, existing machining methods have many insurmountable drawbacks for thin-walled internal and external tooth structures, making them unsuitable for machining the tooth profiles of thin-walled parts. Firstly, thin-walled parts are inherently thin and lack rigidity. During machining, the cutting force between the tool and the workpiece causes significant elastic and plastic deformation, leading to dimensional deviations and tooth distortion in the machined tooth profile, failing to meet the precision requirements of machining. Secondly, machining generates cutting stress on the workpiece surface. Stress concentration can easily cause cracking and deformation in thin-walled workpieces, significantly reducing the workpiece's pass rate and increasing production costs. Thirdly, machining generates a large amount of chips that easily adhere to the workpiece surface or the tool, not only scratching the workpiece surface and affecting surface quality but also potentially accelerating tool wear, reducing machining efficiency and tool life. Furthermore, machining is a removal-type process with low material utilization. For thin-walled parts, excessive material removal further reduces the structural strength of the workpiece, affecting its performance.

[0005] In addition to the inherent defects of cutting processes mentioned above, some existing non-cutting processing methods (such as stamping) also have limitations in the machining of thin-walled internal and external teeth. They often have problems such as irregular tooth formation, many surface burrs, and inability to adapt to complex tooth shape machining. Moreover, the impact force during stamping is relatively large, which can easily lead to irreversible deformation or even damage to thin-walled workpieces.

[0006] In summary, existing tooth machining technologies primarily rely on cutting processes, which are unsuitable for machining thin-walled internal and external tooth structures. These technologies suffer from low machining accuracy, easy workpiece deformation, low yield rates, and insufficient production efficiency, making it difficult to meet the demands of industrial production for precise, efficient, and batch processing of thin-walled internal and external tooth structures. Therefore, developing production equipment and processes that can overcome the aforementioned shortcomings of existing technologies and are suitable for machining thin-walled internal and external tooth structures has become a pressing technical problem for those skilled in the art. Summary of the Invention

[0007] The purpose of this invention is to provide a production equipment and process for thin-walled internal and external tooth structures, which solves the technical problem that thin-walled internal and external tooth workpieces are difficult to process in related technologies.

[0008] A production equipment for thin-walled internal and external tooth structures includes: Host; A toothed mold, which is rotatably mounted on the main unit; A contact mold is movably and rotatably mounted on the main machine and coaxially arranged with the toothed mold. The contact mold is axially movable and close to the toothed mold to press the workpiece onto the end face of the toothed mold. Two toothed components are located between the toothed mold and the abutting mold. They are symmetrically located on both sides of the axis of the toothed mold. Each toothed component is rotatably equipped with a toothed gear. The toothed components can move along the axial direction of the toothed mold to tooth the workpiece through the toothed gear.

[0009] According to an exemplary embodiment of this disclosure, the tooth-cutting component includes: A movable stage, which is movably mounted on the main unit along the axial direction of the toothed mold; A rotating frame is rotatably mounted relative to the moving table, and the toothed component is rotatably mounted on the rotating frame. The rotating frame can drive the toothed component to swing laterally to move closer to or away from the workpiece.

[0010] According to an exemplary embodiment of this disclosure, the tooth-crushing component further includes: A transverse platform is movably mounted on a moving platform, and a rotating frame is rotatably mounted on the transverse platform. The transverse platform is capable of moving in a direction perpendicular to the toothed mold, and the transverse platform has a fixing part. An adjusting screw has a first threaded portion and a second threaded portion that are symmetrically arranged and have opposite thread directions. The first threaded portion and the second threaded portion are respectively threaded with the two transverse moving platforms of the two gear-cutting parts. The adjusting screw is used to adjust the distance between the two transverse moving platforms. A spacing positioning component is provided, with one end of the component disposed on a fixed part of one of the transverse platforms and the other end passing through another adjacent fixed part. The spacing positioning component has a limiting threaded part, on which a fixing nut is threadedly connected. The fixing nut abuts against one of the fixed parts to limit the maximum spacing between the two transverse platforms.

[0011] According to an exemplary embodiment of this disclosure, the toothed mold includes an end positioning platform and toothed portions. The end positioning platform is rotatably connected to the host machine and is used to abut against the end face of the workpiece. There are several toothed portions, which are circumferentially arranged on the periphery of the end positioning platform. There is a rolling gap between two adjacent toothed portions. After the toothing component moves, the toothing gear passes through the rolling gap to achieve the forming of the workpiece.

[0012] According to an exemplary embodiment of this disclosure, it further includes: A lubricating and cooling oil pipe runs through the transverse platform and the rotating frame. The outlet of the lubricating and cooling oil pipe faces the gear and is used to coat the outer periphery of the gear with lubricating grease. The bottom of the rotating frame has an oil collection groove for collecting the lubricating grease dripping from the gear. An oil tank is provided on the transverse platform, and the oil collection trough leads to the oil tank. A peristaltic pump, which connects the oil tank and the lubrication and cooling oil pipe, is used to pump lubricating grease into the gear.

[0013] According to an exemplary embodiment of this disclosure, the gear has a toothed portion and an oil guide groove. The toothed portion is a smooth annular portion, and the oil guide groove is a plurality of grooves arranged circumferentially on the lower outer periphery of the toothed portion. The outlet of the lubricating and cooling oil pipe faces the toothed portion, and the oil guide groove is used to guide excess lubricating grease on the toothed portion to the oil collection groove.

[0014] According to an exemplary embodiment of this disclosure, it further includes: The indexing plate is mounted on the main unit, and the tooth mold is detachably mounted on the indexing plate. The tooth mold rotates at equal angles through the indexing plate to achieve circumferential machining of the tooth shape.

[0015] A manufacturing process for a thin-walled internal and external tooth structure, using a manufacturing equipment for a thin-walled internal and external tooth structure, comprising: Step S1: Place the workpiece on the outer end of the toothed mold, and move the abutting mold closer to 2 to press the workpiece against the end face of the toothed mold; Step S2: Adjust the position of the moving table so that the side distance between the two gears is greater than the tooth root distance at the symmetrical position of the workpiece, but less than the outer diameter of the workpiece; Example explanation of the tooth root distance of the workpiece Step S3: The two tooth-forming parts move along the axial direction of the tooth-shaped mold, and the tooth-forming gear rolls the workpiece so that two symmetrical tooth shapes are rolled out on both sides of the workpiece; Step S4: After the workpiece is pressed out with a pair of teeth, the indexing plate drives the tooth mold to rotate, which in turn drives the abutting mold to rotate synchronously with the workpiece. Step S3 is repeated to form the next pair of teeth until the teeth on the outer periphery of the workpiece are completely formed.

[0016] According to an exemplary embodiment of this disclosure, in step S3, the beating gear can roll against the outer wall of the workpiece when beating the toothed component, and swing laterally relative to 403 under the drive of the rotating frame, so as to reduce the distance between the two beating gears and form a tooth shape on the workpiece.

[0017] According to an exemplary embodiment of this disclosure, in step S3, the cooling lubricating oil pipe supplies oil to the grinding gear from the outlet. When the grinding gear moves toward the toothed mold and passes over the surface of the workpiece, it contacts the workpiece. During the resetting process, the rotating frame drives the grinding gear to rotate relative to the transverse platform by a certain angle, so as to increase the distance between the outer edges of the two grinding gears, so as to ensure that the grinding gear does not abut against the workpiece.

[0018] Compared with the prior art, the production equipment and process for thin-walled internal and external tooth structures provided by the embodiments of the present invention provide stable installation and power support for each component through the host machine. The tooth mold and the abutment mold cooperate to achieve precise positioning and clamping of the workpiece. Two symmetrically arranged tooth-cutting parts perform double-sided roller pressing and tooth cutting on the workpiece through tooth-cutting gears. This effectively solves the problems of easy deformation, low tooth accuracy and easy surface wear in the processing of thin-walled workpieces. It can realize efficient and precise processing of thin-walled internal and external tooth structures. The processed workpieces have regular tooth shape, small dimensional error, no obvious scratches and damage on the workpiece surface, and the equipment operates stably and can continuously perform batch processing, thereby improving production efficiency. A production process for thin-walled internal and external tooth structures enables precise and efficient machining. Positioning and clamping ensure workpiece stability during machining, initial position adjustment prevents workpiece damage and ineffective tooth cutting, roll forming reduces workpiece defects, and indexing rotation enables continuous machining of all tooth profiles. The entire process is simple and efficient, enabling continuous batch production. The machined workpieces have regular tooth profiles, small dimensional errors, smooth surfaces, and a high workpiece qualification rate. At the same time, the process is adaptable to thin-walled workpieces of different sizes and tooth profiles, offering high flexibility, low operator difficulty, and high production efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the production equipment structure for the thin-walled internal and external tooth structure provided in an embodiment of the present invention; Figure 2 This is an embodiment of the present invention. Figure 1 A magnified structural diagram of A in the middle; Figure 3 This is an embodiment of the present invention. Figure 1 Schematic diagram of the structure of the gear component; Figure 4 This is an embodiment of the present invention. Figure 3 A magnified structural diagram of B in the diagram; Figure 5 This is an embodiment of the present invention. Figure 3 A structural diagram from a structural perspective; Figure 6 This is an embodiment of the present invention. Figure 5 A schematic diagram of the structure of CC; Figure 7 This is a schematic diagram of the structure of the workpiece produced according to an embodiment of the present invention; In the diagram: Main unit-1, Toothed mold-2, End positioning table-201, Toothed part-202, Rolling gap-203, Abutting mold-3, Gear-cutting part-4, Gear-cutting part-401, Moving table-402, Rotating frame-403, Transverse platform-404, Fixing part-405, Adjusting screw-406, First threaded part-407, Second threaded part-408, Spacing positioning part-409, Oil collection groove-410, Gear-cutting part-411, Oil guide groove-412, Lubricating and cooling oil pipe-5, Oil tank-6, Peristaltic pump-7, Indexing plate-8. Detailed Implementation The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure. For ease of understanding, the English abbreviations and related technical terms involved in the embodiments of this disclosure will be explained and described below.

[0021] It should be understood that the described embodiments are merely some, not all, of the embodiments disclosed herein. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0022] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The singular forms “a,” “the,” and “the” as used in the embodiments of this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0023] It should be understood that the term "and / or" used in this article is merely a way of describing the logical relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0024] Depending on the context, the word "if" as used here can be interpreted as "when" or "when" or "in response to determination" or "in response to detection." Similarly, depending on the context, the phrase "if determination" or "if detection (of the stated condition or event)" can be interpreted as "when determination" or "in response to determination" or "when detection (of the stated condition or event)" or "in response to detection (of the stated condition or event)."

[0025] It should be understood that the terms "first," "second," etc., used in this disclosure are for distinguishing purposes only and should not be construed as indicating or implying relative importance or order.

[0026] In the description of this disclosure, the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as a limitation of this disclosure.

[0027] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "joining" should be interpreted broadly, for example, they can be fixed connections, detachable connections, mating connections or integral connections; those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0028] like Figures 1-7As shown, this invention illustrates a production equipment and process for a thin-walled internal and external tooth structure according to an embodiment of the present invention. The equipment includes a main unit 1, which serves as the mounting foundation and power output carrier for the entire production equipment. It supports all components, including the tooth mold 2, the abutment mold 3, and the tooth-cutting component 4, providing a stable mounting platform for the movement of each component. It also has a built-in power mechanism (such as a motor and a reducer) to provide power for the rotation of the tooth mold 2, the movement and rotation of the abutment mold 3, and the movement of the tooth-cutting component 4, ensuring the overall stability and reliability of the equipment and preventing a decrease in workpiece processing accuracy due to equipment shaking.

[0029] The tooth mold 2 is rotatably mounted on the host machine 1. The outer circumferential surface of the tooth mold 2 matches the forming surface of the inner tooth (or outer tooth) of the thin-walled workpiece to be processed. Its rotation is driven by the power provided by the host machine 1. The rotation of the tooth mold 2 can drive the workpiece mounted on it to rotate synchronously, providing a basis for the tooth cutting part 4 to perform circumferential tooth processing on the workpiece. At the same time, the structural accuracy of the tooth mold 2 directly determines the forming accuracy of the workpiece tooth, ensuring that the processed tooth meets the design size requirements.

[0030] The abutment mold 3 is movable and rotatable on the main unit 1 and is coaxially arranged with the toothed mold 2. The movement of the abutment mold 3 is driven by a linear drive mechanism (such as a cylinder, screw and slider mechanism) built into the main unit 1. After the abutment mold 3 moves, it is used to press the workpiece onto the toothed mold 2. Its function is to axially position and clamp the workpiece to prevent axial movement or circumferential slippage of the workpiece during the toothing process, ensure that the workpiece and the toothed mold 2 rotate synchronously, and avoid deviation in toothing due to insufficient clamping force. Furthermore, the coaxial arrangement of the abutment mold 3 and the toothed mold 2 ensures that the central axis of the workpiece coincides with the central axis of the toothed mold 2, further improving the coaxiality of toothing.

[0031] Two tooth-cutting components 4 are symmetrically arranged on the main unit 1 along the axis of the toothed mold 2. Each tooth-cutting component 4 has a rotating tooth-cutting gear 401. The movement of the tooth-cutting component 4 is driven by the linear drive mechanism of the main unit 1. After the tooth-cutting component 4 moves, the tooth-cutting gear 401 is used to tooth the workpiece mounted on the toothed mold 2. The two tooth-cutting components 4 are symmetrically arranged, which can simultaneously tooth the workpiece from both sides, so that the force on both sides of the workpiece is uniform and the workpiece is not deformed due to excessive force on one side (especially thin-walled workpieces have low rigidity and are prone to bending, twisting and other defects due to force on one side). The rotating tooth-cutting gear 401 can convert the movement of the tooth-cutting component 4 into rolling friction between the tooth-cutting gear 401 and the workpiece, reducing the wear on the workpiece surface. At the same time, the workpiece is plastically deformed by rolling and pressing to form the required tooth shape. Compared with rigid stamping, the risk of workpiece cracking can be reduced.

[0032] In this embodiment, the host 1 provides stable installation and power support for each component. The toothed mold 2 and the abutment mold 3 cooperate to achieve precise positioning and clamping of the workpiece. Two symmetrically arranged tooth-cutting parts 4 use tooth-cutting gears 401 to perform double-sided roller pressing and tooth cutting on the workpiece, which effectively solves the problems of easy deformation, low tooth accuracy, and easy surface wear during the processing of thin-walled workpieces. It can realize efficient and precise processing of thin-walled internal and external tooth structures. The processed workpieces have regular tooth shape, small dimensional error, no obvious scratches or damage on the workpiece surface, and the equipment operates stably and can continuously perform batch processing, thereby improving production efficiency.

[0033] As a specific embodiment, the gear-cutting component 4 specifically includes: a movable table 402, which is movably mounted on the host machine 1 along the axial direction of the tooth-shaped mold 2. The movable table 402 is connected to the linear drive mechanism of the host machine 1 and is used to drive the entire gear-cutting component 4 to move along the axial direction of the tooth-shaped mold 2, providing a moving basis for the gear-cutting 401 to perform axial gear-cutting processing on the workpiece. The movable table 402 adopts a sliding guide rail to cooperate with the host machine 1, which can improve the stability and accuracy of the movement, avoid jamming or deviation during the movement, and ensure the accurate contact position between the gear-cutting 401 and the workpiece.

[0034] The rotating frame 403 is rotatably mounted relative to the moving table 402. The grinding gear 401 of the grinding component 4 is rotatably mounted on the rotating frame 403. The rotation of the rotating frame 403 is driven by a built-in small drive motor (or manual adjustment mechanism). After the rotating frame 403 rotates, it drives the grinding gear 401 to move closer to or away from the rotation axis of the tooth mold 2. Its function is to adjust the distance between the grinding gear 401 and the tooth mold 2, thereby adjusting the clamping force and grinding depth of the grinding gear 401 on the workpiece. It can be adapted to the processing of thin-walled workpieces of different sizes (different tooth root spacing, different outer diameter). At the same time, the grinding depth can be gradually adjusted according to the processing progress of the workpiece to avoid excessive grinding depth at one time, which may cause the workpiece to crack or the tooth shape to deform, thus improving the processing flexibility and applicability.

[0035] When the grinding gear 401 reciprocates across the workpiece surface, it only contacts the workpiece for a single stroke (i.e., when the grinding tooth 4 moves towards the toothed mold 2, the grinding gear 401 contacts the workpiece and performs grinding; when it moves in the opposite direction, the grinding gear 401 does not contact the workpiece). During the reset process (the stroke during which the grinding gear 401 does not contact the workpiece), the rotating frame (rotating frame 403) drives the grinding gear 401 to rotate relative to the frame (moving table 402) by a certain angle, increasing the distance between the outer edges of the two grinding gears 401 to ensure that the grinding gear 401 does not abut against the workpiece. In this embodiment, the precise axial movement of the gear-cutting part 4 is achieved by the moving table 402, and the distance between the gear 401 and the tooth mold 2 is adjusted by the rotating frame 403. This not only improves the accuracy of gear cutting but also expands the adaptability of the equipment, enabling the processing of thin-walled internal and external gear workpieces of different sizes and specifications. At the same time, the gear cutting depth can be flexibly adjusted to reduce workpiece processing defects and further improve processing quality and production efficiency. The rotation adjustment of the rotating frame 403 is convenient and can be quickly adjusted according to processing requirements, reducing the difficulty of operation for operators.

[0036] As a specific embodiment, the tooth-cutting component 4 is further optimized. The tooth-cutting component 4 also includes: a transverse platform 404, which is movably mounted on the moving table 402, with the moving direction perpendicular to the axis of the tooth mold 2; a rotating frame 403 is rotatably mounted on the transverse platform 404; the transverse platform 404 has a fixing part 405; the transverse platform 404 is used to drive the rotating frame 403 and the tooth-cutting gear 401 to move laterally, further fine-tuning the relative position of the tooth-cutting gear 401 and the tooth mold 2, ensuring that the contact position of the tooth-cutting gear 401 with the workpiece is accurate; the fixing part 405 is used to install the spacing positioning component 409, providing a stable mounting base for the spacing positioning component 409 and preventing the spacing positioning component 409 from shaking.

[0037] The adjusting screw 406 has a symmetrically arranged first threaded portion 407 and second threaded portion 408. The threads of the first threaded portion 407 and the second threaded portion 408 have opposite directions of rotation. The first threaded portion 407 and the second threaded portion 408 are respectively threadedly engaged with the two transverse moving platforms 404 of the two toothed parts 4. One end of the adjusting screw 406 is connected to an adjusting handle (or drive motor). The adjusting screw 406 is used to adjust the distance between the two transverse moving platforms 404. Its function is to realize the synchronous reverse adjustment of the two toothed parts 4. When the adjusting screw 406 is rotated, the two transverse moving platforms 404 can move closer or further away at the same time, ensuring that the distance between the two toothed gears 401 and the toothed mold 2 is always symmetrical, ensuring that the toothed force on both sides of the workpiece is uniform, avoiding deformation of the workpiece due to uneven force on both sides, and at the same time, the initial distance between the two toothed gears 401 can be quickly adjusted to adapt to workpieces of different sizes and improve adjustment efficiency.

[0038] One end of the spacing positioning component 409 is mounted on the fixing part 405 of a transverse platform 404, and the other end passes through another adjacent fixing part 405. The spacing positioning component 409 has a limiting threaded part, on which a fixing nut is provided. The fixing nut abuts against the fixing part 405 to limit the maximum spacing between the two transverse platforms 404. Its function is to limit the spacing between the two transverse platforms 404, preventing the adjusting screw 406 from being over-adjusted, which would cause the spacing between the two grinding gears 401 to be too large, making it impossible to effectively grind the workpiece. At the same time, it can fix the position of the two transverse platforms 404, preventing the transverse platforms 404 from moving during processing, ensuring stable grinding spacing, and improving processing accuracy. The setting of the fixing nut allows for easy adjustment of the limiting position to adapt to different workpiece size requirements.

[0039] In this embodiment, the transverse platform 404 enables lateral fine-tuning of the gear 401, further improving the accuracy of the gear position; the adjusting screw 406 enables synchronous reverse adjustment of the two gear 4, ensuring uniform force on both sides of the workpiece and improving the symmetry of the gear machining; the spacing positioning component 409 limits and fixes the spacing of the transverse platform 404, avoiding over-adjustment and positional deviation during processing, further improving the stability of equipment operation and processing accuracy, while expanding the equipment's adaptability range, enabling rapid adaptation to thin-walled workpieces of different sizes, reducing the adjustment difficulty for operators, and improving production efficiency.

[0040] As a specific embodiment, the toothed mold 2 has an end positioning platform 201 and a toothed part 202, with the following specific structure: The end positioning platform 201 is a cylindrical structure, and its diameter matches the positioning part of the workpiece to be processed (such as the inner hole or stepped surface of the workpiece). It is used to abut against the positioning part of the workpiece to perform radial and axial positioning of the workpiece, ensuring that the installation position of the workpiece on the toothed mold 2 is accurate, avoiding radial displacement of the workpiece, and further improving the coaxiality of the toothed processing. At the same time, the end face of the end positioning platform 201 can axially limit the workpiece, and with the pressing action of the abutment mold 3, further prevent the workpiece from axially moving during processing.

[0041] There are several toothed portions 202 arranged circumferentially on the periphery of the end positioning table 201. The shape and size of the toothed portions 202 match the tooth shape (internal teeth and / or external teeth) of the workpiece to be processed. The surface of the toothed portions 202 is polished to reduce the friction between the toothed portions and the workpiece and avoid scratching the workpiece surface. At the same time, the hardness of the toothed portions 202 is higher than that of the workpiece to ensure that the toothed portions 202 do not wear or deform during long-term processing and to ensure the consistency of the processed tooth shape.

[0042] There is a rolling gap 203 between two adjacent toothed parts 202. The width of the rolling gap 203 matches the thickness of the toothed gear 401. After the toothed part 4 moves, the toothed gear 401 passes through the rolling gap 203 to achieve the forming of the workpiece. The function of the rolling gap 203 is to provide clearance space for the toothed gear 401 to avoid collision and interference between the toothed part 202 of the toothed mold 2. At the same time, the toothed gear 401 rolls the workpiece in the rolling gap 203, which can make the plastic deformation of the workpiece more complete, the formed tooth shape more regular, and avoid defects such as burrs and missing material in the tooth shape.

[0043] In this embodiment, the end positioning stage 201 achieves precise positioning of the workpiece, improving the stability and coaxiality of the workpiece installation; the precise design of the tooth profile 202 ensures that the processed tooth profile meets the design requirements and has a smooth surface without scratches; the rolling gap 203 provides clearance space for the gear 401, avoiding interference between equipment parts, while improving the tooth forming quality, reducing tooth defects, further improving processing accuracy and workpiece qualification rate, and extending the service life of the tooth mold 2.

[0044] As a specific embodiment, it also includes a lubrication and cooling oil pipe 5. The lubrication and cooling oil pipe has an outlet and is a flexible pipe that runs through the transverse platform 404 and the rotating frame 403. The outlet faces the side of the gear 401 and is used to coat the side of the gear 401 with lubricating grease. The flexible pipe can adapt to the rotation of the rotating frame 403 and the movement of the transverse platform 404, avoiding bending or breakage of the oil pipe and ensuring a stable supply of lubricating grease. Coating the side of the gear 401 with lubricating grease can reduce the friction between the gear 401 and the workpiece, reduce the wear on the workpiece surface, and reduce the wear of the gear 401, thus extending the service life of the gear 401. In addition, the lubricating grease also has a cooling effect, which can remove the heat generated during the gear grinding process (the friction and extrusion between the workpiece and the gear 401 during the gear grinding process will generate a lot of heat, especially for thin-walled workpieces with poor heat resistance, and the heat can easily cause the workpiece to deform or crack), preventing the workpiece from deforming due to high temperature and ensuring the processing accuracy.

[0045] The bottom of the rotating frame 403 has an oil collection groove 410, which is used to collect the lubricating grease dripping from the gear 401. The shape of the oil collection groove 410 matches the bottom shape of the rotating frame 403, which can collect the dripping lubricating grease completely, preventing the lubricating grease from dripping into the inside of the main unit 1 or the surface of the workpiece, thus contaminating the equipment and the workpiece. At the same time, it realizes the recycling of lubricating grease, reduces the consumption of lubricating grease, and saves production costs.

[0046] Oil tank 6 is installed on the transverse platform 404, and oil collection trough 410 leads to oil tank 6. Oil tank 6 is used to store lubricating grease and provide a stable grease supply for lubrication and cooling oil pipe 5. The lubricating grease collected by oil collection trough 410 can flow into oil tank 6 through pipe to realize the recycling of lubricating grease. Oil level observation window can be installed on oil tank 6 to facilitate operators to observe the remaining amount of lubricating grease and replenish it in time.

[0047] The peristaltic pump 7 connects the oil tank 6 and the lubrication and cooling oil pipe 5, and is used to pump lubricating grease into the gear 401. The peristaltic pump 7 has the feature of adjustable flow rate, which can adjust the supply flow rate of lubricating grease according to processing needs, avoiding waste caused by excessive flow rate or insufficient flow rate to achieve the lubrication and cooling effect. At the same time, the peristaltic pump 7 operates stably, which can ensure a continuous and stable supply of lubricating grease. In addition, the peristaltic pump 7 has strong adaptability to lubricating grease and can deliver lubricating grease of different viscosities.

[0048] In this embodiment, lubricating grease is supplied to the gear 401 through the lubrication and cooling oil pipe 5, achieving the dual functions of lubrication and cooling, reducing wear on equipment parts and damage to the workpiece surface, preventing workpiece deformation and cracking due to high temperature, improving processing quality and equipment service life; the oil collection tank 410 and oil tank 6 realize the recycling of lubricating grease, saving production costs and avoiding environmental pollution; the peristaltic pump 7 ensures a stable and adjustable supply of lubricating grease, adapting to different processing needs, and further improving the stability and reliability of equipment operation.

[0049] As a specific embodiment, the gear 401 has a toothed portion 411 and an oil guide groove 412. The toothed portion 411 is a smooth annular portion. The outer diameter of the toothed portion 411 matches the tooth forming requirements of the workpiece to be processed. The smooth surface design can reduce the friction between the toothed portion and the workpiece, avoid scratching the workpiece surface, and at the same time, the smooth surface can allow the lubricating grease to adhere evenly, improving the lubrication effect. The hardness of the toothed portion 411 is higher than that of the workpiece, ensuring that the toothed portion 411 does not wear or deform during long-term processing, thus ensuring the toothing accuracy.

[0050] Several oil guide grooves 412 are arranged circumferentially on the lower side of the tooth-cutting section 411. The outlet of the lubrication and cooling oil pipe 5 faces the tooth-cutting section 411. The oil guide grooves 412 are used to guide excess lubricating grease on the tooth-cutting section 411 to the oil collection groove 410. The cross-section of the oil guide groove 412 is arc-shaped, which can quickly guide excess lubricating grease to flow to the oil collection groove 410, avoid excess lubricating grease adhering to the surface of the tooth-cutting section 411, prevent excessive lubricating grease from causing oil stains and contamination on the workpiece surface, reduce lubricating grease waste, and improve the recycling rate of lubricating grease. In addition, the oil guide grooves 412 can also remove some of the heat generated during the tooth-cutting process, and help improve the cooling effect.

[0051] In this embodiment, based on embodiment 5, the toothed part 411 has a smooth surface, reducing workpiece surface wear and friction, and improving lubrication effect; the oil guide groove 412 can quickly guide excess lubricating grease to be recovered, reducing lubricating grease waste and workpiece contamination, while assisting in cooling, further improving the lubrication and cooling effect, ensuring the temperature stability of the workpiece and equipment components during the toothing process, avoiding workpiece deformation and cracking, improving processing quality, and extending the service life of the toothed gear 401, reducing production costs.

[0052] As a specific embodiment, it also includes an indexing plate 8, which is mounted on the host machine 1 and connected to the power mechanism of the host machine 1. The tooth mold 2 is detachably mounted on the indexing plate 8. The tooth mold 2 achieves uniform angular rotation through the indexing plate 8 to realize the circumferential machining of the tooth profile. The indexing plate 8 adopts a high-precision indexing structure (such as a worm gear indexing mechanism or a servo indexing mechanism), which can achieve precise uniform angular rotation with small rotation angle error, ensuring uniform tooth spacing in the circumferential direction of the workpiece, and improving the accuracy and consistency of tooth profile machining. The detachable mounting of the tooth mold 2 on the indexing plate 8 facilitates the replacement of tooth molds 2 of different specifications to adapt to the machining needs of workpieces with different tooth profiles and sizes without disassembling the indexing plate 8, reducing the difficulty of operation and improving the adaptability and changeover efficiency of the equipment. The indexing plate 8 drives the tooth mold 2 to rotate at uniform angles, which can realize the continuous machining of all tooth profiles in the circumferential direction of the workpiece without the need for manual adjustment of the workpiece position, improving production efficiency, and avoiding positional deviations caused by manual adjustment, further improving machining accuracy.

[0053] In this embodiment, the toothed mold 2 is rotated precisely at equal angles by the indexing plate 8, ensuring that the tooth spacing in the circumferential direction of the workpiece is uniform and consistent, avoiding errors caused by manual adjustment and improving processing quality. The toothed mold 2 is detachable, which is convenient for replacement, expands the adaptability of the equipment, improves the changeover efficiency, and enables rapid switching of processing of workpieces of different specifications, further improving production efficiency. At the same time, the indexing plate 8 operates stably, which can ensure continuous and efficient operation of the equipment, making it suitable for batch processing scenarios.

[0054] A manufacturing process for a thin-walled internal and external tooth structure, using the manufacturing equipment for the thin-walled internal and external tooth structure described in the above embodiment, specifically includes the following steps: Step S1: Place the workpiece on the toothed mold 2, so that the positioning part of the workpiece abuts against the end positioning table 201 of the toothed mold 2, ensuring that the workpiece is installed in a precise position. Then, start the linear drive mechanism of the host machine 1 to drive the abutment mold 3 to move, pressing the abutment mold 3 against the bottom wall of the workpiece, so that the workpiece is firmly pressed on the toothed mold 2. The purpose of this step is to achieve precise positioning and firm clamping of the workpiece, to prevent the workpiece from axial movement, circumferential slippage or radial displacement during subsequent tooth cutting, to provide a stable foundation for subsequent tooth cutting, and to ensure processing accuracy.

[0055] Step S2: Adjust the position of the moving table 402 according to the size and specifications of the workpiece so that the side distance between the two grinding gears 401 is greater than the tooth root distance at the symmetrical position of the workpiece and less than the outer diameter of the workpiece. The purpose of this step is to determine the initial position of the grinding gears 401, to ensure that the grinding gears 401 can contact the outer wall of the workpiece and perform grinding processing when moving, and at the same time avoid the grinding gears 401 being too far apart to apply effective grinding force to the workpiece, or too close apart to cause excessive compression between the grinding gears 401 and the workpiece, resulting in deformation and damage to the workpiece.

[0056] Step S3: Start the linear drive mechanism of the host 1 to drive the two tooth-forming parts 4 to move along the axial direction of the tooth mold 2. During the contact process with the workpiece, the tooth 401 rotates due to friction, rolls the outer wall of the workpiece, causing plastic deformation of the workpiece, and rolls out the tooth shape that matches the tooth shape 202 of the tooth mold 2 on the workpiece. This step is the core step of tooth forming. Through the rolling action of the tooth 401, the thin-walled workpiece is gradually formed into the required tooth shape. Compared with rigid stamping, roll forming can reduce the risk of workpiece cracking and deformation, and at the same time make the tooth surface smoother and more regular.

[0057] Step S4: After the workpiece is pressed out with a tooth shape, the host machine 1 drives the indexing plate 8 to rotate the tooth mold 2 at an equal angle by one tooth pitch. The contact mold 3 rotates synchronously with the workpiece under the action of friction. Then, step S3 is repeated so that the tooth-making part 4 moves along the axial direction of the tooth mold 2 again to roll the workpiece and form the next tooth shape. The above process is repeated until all the teeth in the circumferential direction of the workpiece are completely formed, and the processing of the workpiece is completed.

[0058] In this embodiment, the above steps enable precise and efficient machining of thin-walled internal and external tooth structures. The positioning and clamping in step S1 ensures the stability of the workpiece position during machining. The initial position adjustment in step S2 avoids workpiece damage and ineffective tooth cutting. The roll forming in step S3 reduces workpiece defects. The indexing rotation in step S4 enables continuous machining of all tooth profiles. The entire process is simple and efficient, enabling continuous batch production. The machined workpieces have regular tooth profiles, small dimensional errors, and smooth surfaces, resulting in a high workpiece qualification rate. At the same time, the process is adaptable to thin-walled workpieces of different sizes and tooth profiles, offering high flexibility, low operator difficulty, and high production efficiency.

[0059] As a specific embodiment, in step S3, when the tooth-pressing component 4 moves, the tooth-pressing gear 401 presses against the outer wall of the workpiece to perform roller pressing and tooth pressing on the workpiece. When pressing the teeth, the tooth-pressing component 4 makes reciprocating movements (i.e., moving back and forth along the axial direction of the tooth mold 2). Each time it reciprocates, the host machine 1 drives the rotating frame 403 to rotate the tooth-pressing gear 401 relative to the frame (moving table 402) by a certain angle, so that the distance between the outer edges of the two tooth-pressing gears 401 is reduced until the workpiece teeth are formed. The purpose of this optimization step is to achieve a gradual increase in the tooth-pressing depth, avoiding excessive tooth-pressing at one time, which would cause the workpiece to crack or deform (especially thin-walled workpieces with low rigidity are easily damaged by excessive plastic deformation at one time). By reciprocating movement and gradually reducing the distance between the tooth-pressing gears 401, the workpiece gradually undergoes plastic deformation to form a complete tooth shape. At the same time, it can improve the forming quality of the tooth shape, making the tooth shape more regular and the surface smoother, and reducing defects such as tooth burrs and missing material.

[0060] In this embodiment, the tooth profile is gradually formed by the reciprocating movement of the tooth-making component 4 and the gradual reduction of the spacing between the tooth-making gears 401. This effectively avoids damage to the workpiece caused by excessive tooth-making in one go and improves the workpiece qualification rate. At the same time, the gradual forming allows for more complete plastic deformation of the workpiece, higher tooth profile dimensional accuracy, and better surface quality. It is suitable for processing thin-walled workpieces with thinner thickness and more brittle materials, further expanding the range of process adaptability. It can also reduce the stress on the tooth-making gears 401 and extend the service life of the tooth-making gears 401.

[0061] As a specific embodiment, in step S3, the lubricating and cooling oil pipe 5 supplies oil to the grinding gear 401 from the outlet, continuously providing lubricating grease to the grinding gear 401 to achieve lubrication and cooling; when the grinding gear 401 reciprocates across the workpiece surface, it only contacts the workpiece in a single stroke (i.e., when the grinding tooth 4 moves in the direction toward the toothed mold 2, the grinding gear 401 contacts the workpiece and performs grinding; when it moves in the opposite direction, the grinding gear 401 does not contact the workpiece). During the reset process (the stroke in which the grinding gear 401 does not contact the workpiece), the rotating frame (rotating frame 4)... 03) Rotate the gear 401 relative to the frame (moving table 402) by a certain angle to increase the distance between the outer edges of the two gears 401, so as to ensure that the gear 401 does not come into contact with the workpiece. The purpose of this optimization step is to avoid the gear 401 from contacting the workpiece during the reset process, to prevent the gear 401 from scratching the workpiece surface or causing deformation of the formed tooth shape during the reset process, and at the same time, to replenish the gear 401 with lubricating grease and dissipate heat during the reset process, to ensure that the temperature and lubrication of the gear 401 are stable, and to further improve the processing quality.

[0062] In this embodiment, by using single-stroke contact for tooth striking and increasing the spacing of the striking gear 401 during reset, interference and damage between the striking gear 401 and the workpiece are avoided during the reset process, protecting the formed tooth profile and improving the surface quality and tooth profile accuracy of the workpiece. At the same time, continuous oil supply can ensure the lubrication and cooling effect of the striking gear 401, reduce wear of equipment parts and workpiece deformation, further improve processing quality and equipment service life, and improve tooth striking efficiency, making it suitable for batch high-speed processing scenarios.

[0063] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A production equipment for a thin-walled internal and external tooth structure, characterized in that, include: Host (1); Toothed mold (2), the toothed mold (2) is rotatably mounted on the host (1); Abutting mold (3) is movable and rotatably mounted on the host (1) and coaxially mounted with the toothed mold (2). The abutting mold (3) can move axially and approach the toothed mold (2) to press the workpiece onto the end face of the toothed mold (2). The tooth-cutting component (4) is located between the tooth-shaped mold (2) and the abutting mold (3). There are two tooth-cutting components (4), which are symmetrically located on both sides of the axis of the tooth-shaped mold (2). A tooth-cutting gear (401) is rotatably provided on the tooth-cutting component (4). The tooth-cutting component (4) can move along the axial direction of the tooth-shaped mold (2) to cut the workpiece by means of the tooth-cutting gear (401).

2. The production equipment for a thin-walled internal and external tooth structure according to claim 1, characterized in that, The tooth-cutting component (4) includes: A movable stage (402) is mounted on the host machine (1) and is movably disposed along the axial direction of the toothed mold (2); A rotating frame (403) is rotatably mounted relative to the moving table (402), and a toothed component (4) is rotatably mounted on the rotating frame (403). The rotating frame (403) can drive the toothed component (4) to swing laterally to approach or move away from the workpiece.

3. The production equipment for a thin-walled internal and external tooth structure according to claim 2, characterized in that, The tooth-cutting component (4) also includes: A transverse platform (404) is movably mounted on the moving platform (402), and a rotating frame (403) is rotatably mounted on the transverse platform (404). The transverse platform (404) is capable of moving in a direction perpendicular to the toothed mold (2). The transverse platform (404) has a fixing part (405). Adjusting screw (406) has a first threaded portion (407) and a second threaded portion (408) that are symmetrically arranged and have opposite thread directions. The first threaded portion (407) and the second threaded portion (408) are respectively threadedly engaged with the two transverse platforms (404) of the two geared parts (4). The adjusting screw (406) is used to adjust the distance between the two transverse platforms (404). A spacing positioning component (409) is provided at one end on a fixing part (405) of one of the transverse platforms (404), and at the other end through another adjacent fixing part (405). The spacing positioning component (409) has a limiting threaded part, and a fixing nut is threadedly connected to the limiting threaded part. The fixing nut abuts against one of the fixing parts (405) to limit the maximum spacing between the two transverse platforms (404).

4. The production equipment for a thin-walled internal and external tooth structure according to claim 1, characterized in that, The toothed mold (2) includes an end positioning platform (201) and toothed parts (202). The end positioning platform (201) is rotatably connected to the host (1) and is used to abut against the end face of the workpiece. There are several toothed parts (202), and the several toothed parts (202) are arranged circumferentially on the periphery of the end positioning platform (201). There is a rolling gap (203) between two adjacent toothed parts (202). After the toothing component (4) moves, the toothing gear (401) passes through the rolling gap (203) to realize the forming of the workpiece.

5. The production equipment for a thin-walled internal and external tooth structure according to claim 3, characterized in that, Also includes: A lubricating and cooling oil pipe (5) runs through the transverse platform (404) and the rotating frame (403). The outlet of the lubricating and cooling oil pipe (5) faces the gear (401) and is used to coat the outer periphery of the gear (401) with lubricating grease. The bottom of the rotating frame (403) has an oil collection groove (410) for collecting the lubricating grease dripping from the gear (401). Oil tank (6), the oil tank (6) is disposed on the transverse platform (404), and the oil collection trough (410) leads to the oil tank (6). A peristaltic pump (7) is connected to the oil tank (6) and the lubrication and cooling oil pipe (5) for pumping lubricating grease into the gear (401).

6. The production equipment for a thin-walled internal and external tooth structure according to claim 5, characterized in that, The grinding gear (401) has a grinding tooth section (411) and an oil guide groove (412). The grinding tooth section (411) is a smooth annular section. There are several oil guide grooves (412) arranged circumferentially on the lower outer periphery of the grinding tooth section (411). The outlet of the lubricating and cooling oil pipe (5) faces the grinding tooth section (411). The oil guide groove (412) is used to guide excess lubricating grease on the grinding tooth section (411) to the oil collection groove (410).

7. The production equipment for a thin-walled internal and external tooth structure according to claim 1, characterized in that, Also includes: Indexing plate (8), the indexing plate (8) is set on the host (1), the tooth mold (2) is detachably set on the indexing plate (8), the tooth mold (2) achieves equal angle rotation through the indexing plate (8) to achieve circumferential processing of the tooth shape.

8. A manufacturing process for a thin-walled internal and external tooth structure, using the manufacturing equipment for a thin-walled internal and external tooth structure according to any one of claims 1-7, characterized in that, include: Step S1: Place the workpiece on the outer end of the toothed mold (2), and move the abutting mold (3) towards the side closer to 2 to press the workpiece against the end face of the toothed mold (2); Step S2: Adjust the position of the moving stage (402) so that the side distance between the two gears (401) is greater than the tooth root distance at the symmetrical position of the workpiece, and less than the outer diameter of the workpiece; Example explanation of the tooth root distance of the workpiece Step S3: The two toothed parts (4) move along the axial direction of the toothed mold (2), and the toothed gear (401) rolls the workpiece so that two symmetrical toothed shapes are rolled out on both sides of the workpiece. Step S4: After the workpiece is pressed out with a pair of teeth, the indexing plate (8) drives the tooth mold (2) to rotate, which in turn drives the abutting mold (3) to rotate synchronously with the workpiece. Step S3 is repeated to achieve the forming of the next pair of teeth until the teeth on the outer periphery of the workpiece are completely formed.

9. The manufacturing process of a thin-walled internal and external tooth structure according to claim 8, characterized in that, In step S3, the beating gear (401) can roll the outer wall of the workpiece when beating the toothed piece (4), and swing laterally relative to the rotating frame (403) under the drive of the rotating frame (403) so that the distance between the two beating gears (401) is reduced and the tooth shape is formed on the workpiece.

10. The manufacturing process of a thin-walled internal and external tooth structure according to claim 9, characterized in that, In step S3, the cooling lubricating oil pipe supplies oil to the beating gear (401) from the outlet. When the beating gear (401) moves toward the toothed mold (2) and passes over the surface of the workpiece, it comes into contact with the workpiece. During the resetting process, the rotating frame drives the beating gear (401) to rotate a certain angle relative to the transverse platform (404), so that the distance between the outer edges of the two beating gears (401) increases, so as to ensure that the beating gear (401) does not abut against the workpiece.

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