A forging tool for a bearing ring

Abstract

The application belongs to the technical field of bearing ring machining, in particular to a forging tool for bearing rings, which comprises an operation table, a punching press, a rotary feeding mechanism, a punching-twisting integrated mechanism and other components; the forging tool realizes punching and twist ring hole expansion linkage operation through the punching-twisting integrated mechanism, realizes multi-process automatic flow through the intermittent index plate driven by the cam divider, realizes automatic centering of the blank through the claw-shaped driving part linkage positioning part, synchronously integrates electromagnetic induction heating, high-pressure descaling and automatic discharging functions, integrates heating, punching, hole expansion and twist ring in the same tool platform, solves the problems of process fragmentation, positioning deviation and low automation degree of the existing forging tool, avoids heat loss and secondary heating of the blank, improves the processing efficiency and the size precision of the forgings, effectively reduces the scrap rate, and meets the production requirements of small and medium-sized bearing rings in large quantities, high precision and intelligentization.

Description

Technical Field

[0001] This invention relates to the field of bearing ring processing technology, specifically to a forging fixture for bearing rings. Background Technology

[0002] Bearing rings are the core load-bearing components of bearings, and their forging fixtures are key equipment for achieving precision forming of the rings. These fixtures are used to form and control processes such as bar cutting, heating, upsetting, pre-forging, final forging, punching, and ring reaming, directly determining the dimensional accuracy, microstructure uniformity, and mechanical properties of the rings. In existing technologies, forging fixtures generally adopt a step-by-step workstation layout. Through the cooperation of mold cavities and components such as punches and mandrels, the plastic forming from cylindrical blanks to ring forgings is completed, which can be used for the mass production of small and medium-sized bearing rings.

[0003] The existing forging fixtures have the following defects: Firstly, the process is fragmented and inefficient: punching and ring reaming are independent processing steps. During the material turnover between workstations, heat is quickly dissipated, which not only leads to uneven temperature of the bearing rings, affecting the accuracy and plastic flow of punching, but also causes redundancy in process connection and extended production cycle time. The overall processing efficiency is difficult to meet the needs of large-scale automated production. Secondly, poor positioning accuracy and insufficient dimensional stability: The punching process lacks a reliable blank positioning structure, and the working zone and rounded corner area of ​​the punch and die are prone to local wear, causing dimensional deviations and resulting in dimensional fluctuations and eccentric defects in the forgings. In addition, existing forging tooling generally lacks a precise guiding mechanism, and hot blanks are prone to displacement and skew in the die cavity, directly causing uneven wall thickness and excessive coaxiality in the forgings. Under high-speed upsetting conditions, the fit clearance between the piercing die and the outer diameter of the ring is extremely small, further exacerbating the positioning difficulty. Eccentricity and excessive wall thickness differences occur frequently, requiring frequent machine stops for adjustment and rework, which reduces production efficiency. Third, the automation adaptability is weak: the existing forging tooling has a low degree of modularity and intelligence, making it difficult to efficiently adapt to high-speed upsetting equipment and automated loading and unloading production lines. It relies too much on manual intervention to complete operations such as billet placement and tooling adjustment, resulting in poor production stability and a high scrap rate, which cannot adapt to the high-efficiency, precision and intelligent development trend of bearing manufacturing. Summary of the Invention

[0004] The purpose of this invention is to provide a forging fixture for bearing rings. By integrating electromagnetic heating, punching, automatic material feeding and hole-expanding twisting ring into one unit, and using a linkage positioning structure to achieve automatic centering of the billet, and coordinating the hole-expanding twisting ring assembly and the drive mechanism, it solves the problems of fragmented forging process, low processing accuracy, low efficiency and excessive manual intervention in the existing forging process, thereby improving the pass rate and processing efficiency of bearing ring forgings.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: This invention provides a forging fixture for bearing rings, comprising an operating table, a punching press on the operating table, a claw-shaped drive at the power output end of the punching press, a rotary feeding mechanism at the bottom end of the claw-shaped drive, and multiple punching and twisting integrated mechanisms at the top end of the rotary feeding mechanism; each punching and twisting integrated mechanism includes multiple linkage positioning components that cooperate with the claw-shaped drive, one end of each linkage positioning component being connected to a blank frame, a blank placement groove at the top end of the blank frame, and a liftable hole-expanding twisting ring assembly inside the blank frame, one end of which is mounted on the rotary feeding mechanism.

[0006] According to some embodiments of the present invention, the bottom end of the punching press is provided with a plurality of high-pressure atomizing nozzles arranged in a ring array, and the plurality of high-pressure atomizing nozzles are all facing the blank placement groove; the bottom end of the punching press is provided with a discharge machine, and the top end of the discharge machine is provided with a metal conveyor belt.

[0007] According to some embodiments of the present invention, the operating platform is further provided with a support frame, a loading robotic arm and a unloading robotic arm. The support frame is provided with two telescopic electric cylinders. The output ends of the two telescopic electric cylinders are provided with electromagnetic induction heating sleeves. One end of the electromagnetic induction heating sleeve faces the corresponding blank placement groove. The electromagnetic induction heating sleeve is electrically connected to a controller through a wire. The controller is installed on the top of the support frame. A high-temperature steam delivery pump is provided on one side of the controller. The high-temperature steam delivery pump is connected to the high-pressure atomizing nozzle of the punching press through a water pipe.

[0008] According to some embodiments of the present invention, the rotary feeding mechanism includes an indexing assembly mounted on an operating table. The top of the indexing assembly is provided with a plurality of fixed seats. A rotary drive motor is provided on the top side wall of the plurality of fixed seats. A bevel gear is provided at the output end of the rotary drive motor. The inner cavity of each fixed seat is provided with a lifting screw slide.

[0009] According to some embodiments of the present invention, the linkage positioning component includes a positioning slide, the top of which is inclined, and a movable slot for inserting and cooperating with a claw-shaped drive component is provided in the center of the positioning slide. Limiting blocks are provided on both sides of the positioning slide, and a limiting rod slides through the inner cavity of each of the two limiting blocks. One end of the limiting rod is connected to the side wall of the blank frame; the other end of the positioning slide is rotatably connected to an outer shaping roller.

[0010] According to some embodiments of the present invention, the expanding screw ring assembly includes a steel sleeve fixedly connected to the lifting screw slide. The top end of the steel sleeve is provided with a plurality of sliding grooves, the inner cavity of the sliding grooves is provided with springs, the inner cavity of the steel sleeve is provided with a built-in hydraulic rod, the top end of the built-in hydraulic rod is provided with a support block, the top end of the support block is tapered; the outer wall of the steel sleeve is provided with a tapered toothed ring that intermittently meshes with a tapered gear.

[0011] According to some embodiments of the present invention, the top end of the support block is abutted against by a plurality of expansion blocks arranged in a ring array, one end of the expansion block is rotatably connected to an inner shaping roller, and the top end of each expansion block is provided with a slider, the slider is slidably connected to the inner cavity of the groove, and one side of the slider is connected to the inner sidewall of the groove by a spring.

[0012] According to some embodiments of the present invention, a discharge port is provided on the side wall of the blank frame, a slot is provided on the inner side wall of the blank frame, a pusher plate is hinged to the side wall of the discharge port, and the other end of the pusher plate is movably inserted into the inner cavity of the slot.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention integrates electromagnetic induction heating, punching, hole expansion and twisting, and material discharge processes into a single tooling platform through the combined design of the punching and twisting mechanism and the rotary feeding mechanism. This achieves integrated operation of bearing ring forging, solving the problems of the separation of punching and twisting and hole expansion processes and heat loss during material turnover in traditional processing methods. Hole expansion and twisting can be completed without secondary heating, improving production efficiency, while ensuring the plasticity and fluidity of the billet and improving the forming quality of the forging.

[0014] 2. This invention utilizes the linkage between the claw-shaped drive component and the linkage positioning component to drive multiple positioning slides to slide synchronously towards the center using the downward motion of the punching press. The outer forming roller achieves automatic centering and clamping of the billet, solving the problems of poor positioning accuracy and easy deviation and skewing of existing forging fixtures. It ensures the accuracy of punching position, avoids defects such as forging eccentricity, uneven wall thickness, and excessive coaxiality, improves the dimensional stability of forgings, and reduces the frequency of downtime for adjustment and rework.

[0015] 3. This invention integrates a loading robotic arm, a unloading robotic arm, a rotary feeding mechanism, and an automatic discharge structure to achieve fully automated operation of the entire process, including billet loading, process flow, scrap discharge, and finished product unloading. It solves the problems of weak automation adaptability and reliance on manual intervention in existing forging tooling, reduces the intensity of manual operation, reduces production errors caused by human factors, improves production stability, and reduces the scrap rate of forgings. It is also in line with the high-efficiency, precision, and intelligent development trend of bearing manufacturing.

[0016] 4. This invention utilizes a combination of a high-pressure atomizing nozzle and a high-temperature steam delivery pump to perform high-pressure steam purging on the top of the billet before punching, removing oxide scale. This solves the problems of uneven billet end faces, rapid wear of punch dies, and scratches on the forging surface caused by oxide scale, extending the service life of tooling dies while ensuring the quality of the forging surface. Furthermore, through the linkage of the hole-expanding twirling ring assembly and the outer limit of the outer forming roller, bidirectional constraint of the hole-expanding twirling ring is achieved, avoiding the problems of dimensional loss of control and excessive ellipticity caused by the lack of limit in traditional hole expansion, further improving the precision of forgings.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0018] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the structure of the telescopic electric cylinder and the high-temperature steam transfer pump of the present invention; Figure 3 This is a schematic diagram of the structure of the electromagnetic induction heating sleeve of the present invention; Figure 4 This is a schematic diagram of the linkage positioning component of the present invention; Figure 5 This is a schematic diagram of the claw-shaped drive component of the present invention; Figure 6 This is a schematic diagram of the pusher plate of the present invention; Figure 7 This is a schematic diagram of the structure of the metal conveyor belt of the present invention; Figure 8 This is a cross-sectional view of the hole-expanding twist ring assembly of the present invention.

[0020] In the diagram: 1. Operating table; 2. Punching press; 3. Claw-shaped drive component; 4. Rotary feeding mechanism; 41. Indexing assembly; 42. Fixed base; 43. Rotary drive motor; 44. Bevel gear; 45. Lifting screw slide; 5. Punching and twisting integrated mechanism; 51. Linkage positioning component; 511. Positioning slide; 513. Limit block; 514. Limit rod; 515. Outer forming roller; 52. Blank frame; 521. Bayonet; 522. Pusher. 53. Plate; 531. Hole-expanding twist ring assembly; 532. Steel sleeve; 533. Built-in hydraulic rod; 534. Material support block; 535. Expanding support block; 536. Inner shaping roller; 537. Conical toothed ring; 6. High-pressure atomizing nozzle; 7. Discharge machine; 71. Metal conveyor belt; 8. Bearing frame; 9. Loading robotic arm; 10. Unloading robotic arm; 11. Telescopic electric cylinder; 12. Electromagnetic induction heating sleeve; 13. Controller; 14. High-temperature steam transfer pump. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0022] To solve these problems, such as Figures 1-8 As shown, a forging fixture for bearing rings includes an operating table 1, on which a punching press 2 is mounted. The power output end of the punching press 2 is equipped with a claw-shaped drive component 3. The bottom end of the claw-shaped drive component 3 is equipped with a rotary feeding mechanism 4, and the top end of the rotary feeding mechanism 4 is equipped with multiple punching and twisting integrated mechanisms 5. Each punching and twisting integrated mechanism 5 includes multiple linkage positioning components 51 that cooperate with the claw-shaped drive component 3. One end of each linkage positioning component 51 is connected to a blank frame 52. The top end of the blank frame 52 is equipped with a blank placement groove, and the blank frame 52 contains... The lifting and lowering hole-expanding twisting ring assembly 53 has one end mounted on the rotary feeding mechanism 4; the punching press 2 provides punching power; the claw-shaped drive 3 can work in conjunction with the linkage positioning component 51; the rotary feeding mechanism 4 is used for the rotational conveying of the billet; the punching and twisting integrated mechanism 5 integrates positioning, loading and hole-expanding twisting ring functions; the billet frame 52 is used to place the billet; and the hole-expanding twisting ring assembly 53 is used for hole-expanding and twisting ring processing of the billet. All components work together to form a complete forging fixture, providing structural support for the orderly development of subsequent processes.

[0023] In this embodiment, the bottom end of the punching press 2 is provided with a plurality of high-pressure atomizing nozzles 6 arranged in a ring array, all of which face the blank placement groove; the bottom end of the punching press 2 is provided with a discharge machine 7, and the top end of the discharge machine 7 is provided with a metal conveyor belt 71; the high-pressure atomizing nozzles 6 are used to spray high-temperature water vapor, which can clean the oxide scale on the top of the blank, and prevent the oxide scale from affecting the stamping quality and mold life; the discharge machine 7, together with the metal conveyor belt 71, realizes the automatic conveying and discharge of punching waste, without the need for manual cleaning, reducing manual intervention, improving the smoothness of process connection, and eliminating safety hazards.

[0024] In this embodiment, the operating platform 1 is also equipped with a support frame 8, a loading robotic arm 9, and a unloading robotic arm 10. The support frame 8 is equipped with two telescopic electric cylinders 11, and each of the two telescopic electric cylinders 11 has an electromagnetic induction heating sleeve 12 at its output end. One end of the electromagnetic induction heating sleeve 12 faces the corresponding blank placement groove. The electromagnetic induction heating sleeve 12 is electrically connected to a controller 13 through a wire. The controller 13 is installed at the top of the support frame 8. A high-temperature steam delivery pump 14 is provided on one side of the controller 13. The high-temperature steam delivery pump 14 is connected to the high-pressure atomizing nozzle 6 of the punching press 2 through a water pipe. The support frame 8 provides installation support for components such as the telescopic electric cylinder 11 and the controller 13; the loading robotic arm 9 and the unloading robotic arm 10 realize the automatic loading of billets and the automatic unloading of finished products, respectively, improving the degree of automation; the telescopic electric cylinder 11 can push the electromagnetic induction heating sleeve 12 to fit the billet, and the electromagnetic induction heating sleeve 12 realizes the precise heating of the billet to meet the punching temperature requirements; the controller 13 controls the start and stop of the electromagnetic induction heating and the temperature adjustment to ensure heating accuracy; the high-temperature steam delivery pump 14 provides high-pressure high-temperature water vapor to the high-pressure atomizing nozzle 6 to ensure the cleaning effect of oxide scale.

[0025] In this embodiment, the rotary feeding mechanism 4 includes an indexing assembly 41 mounted on the operating table 1. The top of the indexing assembly 41 is provided with multiple fixed seats 42, and the top sidewalls of the multiple fixed seats 42 are provided with rotary drive motors 43. The output end of the rotary drive motors 43 is provided with bevel gears 44, and the inner cavity of each fixed seat 42 is provided with a lifting screw slide 45. The indexing assembly 41 realizes the precise indexing rotation of the billet, ensuring that the billet can be accurately delivered to each processing station. The fixed seats 42 provide mounting points for the rotary drive motors 43 and the lifting screw slide 45. The rotary drive motors 43 provide rotational power, which drives the hole-expanding twisting ring assembly 53 to rotate through the bevel gears 44, realizing the hole-expanding twisting ring action. The lifting screw slide 45 drives the hole-expanding twisting ring assembly 53 to rise and fall, meeting the position requirements of different processes such as material discharge and hole expansion.

[0026] In this embodiment, the linkage positioning component 51 includes a positioning slide 511. The top of the positioning slide 511 is inclined. A movable slot for insertion and engagement with the claw-shaped drive component 3 is provided in the center of the positioning slide 511. Limiting blocks 513 are provided on both sides of the positioning slide 511. Limiting rods 514 slide through the inner cavities of the two limiting blocks 513. One end of the limiting rod 514 is connected to the side wall of the blank frame 52. The other end of the positioning slide 511 is rotatably connected to an outer shaping roller 515. The positioning slide 511 achieves automatic centering and positioning of the blank through insertion and engagement with the claw-shaped drive component 3. The inclined design facilitates the contact and linkage movement of the claw-shaped drive component 3. The limiting blocks 513 and the limiting rods 514 cooperate to restrict the movement trajectory of the positioning slide 511 and ensure positioning accuracy. The outer shaping roller 515 abuts against the outer wall of the blank, assisting in the shaping of the blank while positioning, avoiding scratches on the blank surface, and improving the surface quality of the forging.

[0027] In this embodiment, the hole-expanding twist ring assembly 53 includes a steel sleeve 531 fixedly connected to the lifting screw slide 45. The top of the steel sleeve 531 has multiple grooves, and springs are installed inside the grooves. An internal hydraulic rod 532 is installed inside the steel sleeve 531, and a support block 533 is installed at the top of the internal hydraulic rod 532. The top of the support block 533 is tapered. A tapered toothed ring 536 is provided on the outer wall of the steel sleeve 531, intermittently meshing with the tapered gear 44. The steel sleeve 531 is the hole-expanding twist ring assembly. The mounting carrier of component 53 has sufficient structural strength to withstand the forces during the hole enlargement process; the sliding groove and spring cooperate to buffer and reset the movement of the expansion support block 534; the built-in hydraulic rod 532 provides telescopic power to push the support block 533 to realize the extension and retraction of the expansion support block 534; the conical support block 533 can evenly push multiple expansion support blocks 534 to ensure uniform hole enlargement; the conical toothed ring 536 meshes with the conical gear 44 to transmit the rotational power to the steel sleeve 531 to realize the rotational action of the hole enlargement twisting ring.

[0028] In this embodiment, the top of the support block 533 abuts against a plurality of expanding support blocks 534 arranged in a ring array. One end of the expanding support block 534 is rotatably connected to an inner shaping roller 535. Each expanding support block 534 has a slider at its top. The slider is slidably connected to the inner cavity of the groove, and one side of the slider is connected to the inner sidewall of the groove through a spring. The expanding support block 534 extends outward under the push of the support block 533, and cooperates with the inner shaping roller 535 to realize the expansion and twisting of the inner hole of the blank. The inner shaping roller 535 can reduce friction with the inner hole of the blank, avoid scratching the inner hole, and improve the shaping effect. The slider cooperates with the groove to ensure the precise movement trajectory of the expanding support block 534. The spring realizes the automatic reset of the expanding support block 534, which facilitates the subsequent removal and replacement of the blank.

[0029] In this embodiment, a discharge port is provided on the side wall of the blank frame 52, and a latch 521 is provided on the inner side wall of the blank frame 52. A pusher plate 522 is hinged to the side wall of the discharge port, and the other end of the pusher plate 522 is movably inserted into the inner cavity of the latch 521. The discharge port is used to discharge punching waste, and the latch 521 is used to fix the pusher plate 522 to ensure that the pusher plate 522 is in a closed state when the blank is placed, thus ensuring the stability of the blank placement. The pusher plate 522 is connected by a hinge and can be unfolded under the push of the hole expansion twisting ring assembly 53 to realize the automatic discharge of waste, eliminating the need for manual cleaning of the mold cavity, improving process efficiency, and avoiding waste retention that affects subsequent processing.

[0030] Working principle: First, the billet is clamped and placed in the billet placement groove by the feeding robot arm 9. The rotary feeding mechanism 4 is started to rotate and transport the billet to the bottom end of the electromagnetic induction heating sleeve 12. The telescopic electric cylinder 11 is started to push the electromagnetic induction heating sleeve 12 onto the outside of the billet. The electromagnetic induction heating is started by the controller 13 to raise the billet temperature to the temperature required for punching. Then, the heated billet is rotated and transported to the bottom end of the punching press 2 by the rotary feeding mechanism 4. The punching press 2 is started to punch. During this process, when the power output end of the punching press 2 drives the claw-shaped drive 3 to approach the linkage positioning component 51, the bottom end of the claw-shaped drive 3 is inserted into the moving slot. It works with the limit block 513 to slide at the limit rod 514, so that the positioning slide 511 squeezes the spring and drives the outer forming roller 515 to abut against the outer wall of the blank. When multiple positioning slides 511 move towards the center at the same time, they can clamp and position the blank. At this time, the output end of the punching press 2 is aligned with the center position of the blank for punching. Compared with the traditional single-station punching mode without linkage positioning and relying only on manual or simple placement, it can achieve automatic center positioning, avoid defects such as poor coaxiality of the inner hole of the ring and uneven wall thickness caused by punching position deviation and blank eccentricity and skewing. Moreover, the punching action is generated by linkage and no other operation is required, making the operation difficult. It should be noted that when the power output end of the punching press 2 is close to the top of the billet, the high-temperature steam delivery pump 14 is started, so that high-temperature water vapor is sprayed out from the high-pressure atomizing nozzle 6 in the form of high pressure. Its function is to clean the oxide scale on the top of the billet by high pressure purging, so as to avoid the oxide scale causing unevenness of the billet end face, rapid wear of the punch and die working zone, scratches on the surface of the forging, and dimensional deviations during the punching process. This makes the punch end face flat and smooth, extends the service life of the punch and die, and improves the dimensional stability of the forging. After punching is completed, the output end of the punching press 2 is retracted. During this process, the lifting screw slide 45 rises, causing the expanding screw ring assembly 53 to extend from the fixed seat 42. At this time, the top of the steel sleeve 531 abuts against the bottom of the pusher plate 522 and pushes the pusher plate 522 to rotate and unfold around the hinge point. During this process, the waste material at the top of the pusher plate 522 is discharged from the outlet. Automatic material discharge is achieved. After being pushed out, the waste material falls onto the metal conveyor belt 71, completing the waste material output. The linked material discharge method eliminates the need for manual cleaning of punching waste, avoids waste material stagnation in the mold cavity affecting subsequent blank processing, makes the process connection smoother, and eliminates the safety hazards caused by manual intervention. At this time, the output end of the punching press 2 is retracted to the specified height and the retraction action stops, so that the steel sleeve 531 extends into the space inside the hole after punching the billet. Then, the top of the steel sleeve 531 rises into the hole and stops. The built-in hydraulic rod 532 is activated to extend. The extension of the built-in hydraulic rod 532 pushes the support block 533 to abut against the multiple expansion blocks 534. With the limited movement of the slider in the slide groove, the multiple expansion blocks 534 and the inner shaping roller 535 extend out of the outside of the steel sleeve 531 and abut against the inner side wall of the hole in the billet. At this time, the rotary drive motor 43 is activated to drive the steel sleeve 531 to rotate, so that the multiple inner shaping rollers 535 rotate and expand the hole inside the billet block. During this process, the output end of the punching press 2 moves upward and drives the bottom end of the claw-shaped drive 3 to fit against the inclined surface of the top of the positioning slide 511. The spring force pushes the positioning slide 511, which, in conjunction with the inner forming roller 535, rotates and expands the opening inside the blank block, moving synchronously. When the claw-shaped drive 3 completely separates from the positioning slide 511, the positioning slide 511 and the expanding and twisting ring assembly 53 stop moving and expanding, completing the twisting operation on the blank. The electromagnetic heating, punching, unloading, and expanding and twisting ring processes are seamlessly integrated, solving the problems of fragmented punching and twisting / expanding processes and long turnaround times in traditional processing methods. This allows for the completion of bearing ring forging in a short time. This avoids the problem of excessive time spent on billet transfer and connection, which leads to billet cooling and the need for secondary heating before hole expansion and ring twisting. Furthermore, the automated process improves processing efficiency by integrating multiple operations into one step, resulting in a high degree of integration. At the same time, during hole expansion and ring twisting, the cooperation between the hole expansion and ring twisting assembly 53 and the claw-shaped drive 3 achieves the limiting of the outer ring twisting of the billet through the positioning groove. This avoids the problems of uncontrolled hole expansion size, excessive ring ellipticity, excessive radial runout, and excessive wall thickness deviation caused by the lack of ring limiting in traditional processing methods. As a result, the dimensional accuracy of the ring after hole expansion meets the standards, the coaxiality is high, the wall thickness is uniform, and the overall forging qualification rate is improved, eliminating the need for subsequent rework and adjustment.

[0031] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A forging fixture for bearing rings, characterized in that, It includes an operating table (1), on which a punching press (2) is provided. The power output end of the punching press (2) is provided with a claw-shaped drive (3). The bottom end of the claw-shaped drive (3) is provided with a rotary feeding mechanism (4). The top end of the rotary feeding mechanism (4) is provided with multiple punching and twisting integrated mechanisms (5). The punching and twisting integrated mechanism (5) includes multiple linkage positioning components (51) that cooperate with the claw-shaped drive component (3). One end of the multiple linkage positioning components (51) is connected to a blank frame (52). The top of the blank frame (52) is provided with a blank placement groove. The blank frame (52) is provided with a liftable hole-expanding twisting ring assembly (53). One end of the hole-expanding twisting ring assembly (53) is provided on the rotary feeding mechanism (4).

2. The forging fixture for bearing rings according to claim 1, characterized in that, The bottom end of the punching press (2) is provided with a plurality of high-pressure atomizing nozzles (6) arranged in a ring array, and the plurality of high-pressure atomizing nozzles (6) are all facing the blank placement groove. The bottom end of the punching press (2) is also provided with a discharge machine (7), and the top end of the discharge machine (7) is provided with a metal conveyor belt (71).

3. The forging fixture for bearing rings according to claim 2, characterized in that, The operating table (1) is also equipped with a support frame (8), a loading robotic arm (9) and a unloading robotic arm (10). The support frame (8) is provided with two telescopic electric cylinders (11). The output end of each of the two telescopic electric cylinders (11) is provided with an electromagnetic induction heating sleeve (12). One end of the electromagnetic induction heating sleeve (12) faces the corresponding blank placement groove. The electromagnetic induction heating sleeve (12) is electrically connected to a controller (13) through a wire. The controller (13) is installed at the top of the support frame (8). A high-temperature steam delivery pump (14) is provided on one side of the controller (13). The high-temperature steam delivery pump (14) is connected to the high-pressure atomizing nozzle (6) of the punching press (2) through a water pipe.

4. The forging fixture for bearing rings according to claim 3, characterized in that, The rotary feeding mechanism (4) includes an indexing assembly (41) installed on the operating table (1). The top of the indexing assembly (41) is provided with multiple fixed seats (42). The top sidewalls of the multiple fixed seats (42) are provided with rotary drive motors (43). The output end of the rotary drive motors (43) is provided with bevel gears (44). The inner cavity of each fixed seat (42) is provided with a lifting screw slide (45).

5. The forging fixture for bearing rings according to claim 4, characterized in that, The linkage positioning component (51) includes a positioning slide (511), the top of which is inclined, and a moving slot for interlocking with the claw-shaped drive component (3) is provided in the center of the positioning slide (511). Limiting blocks (513) are provided on both sides of the positioning slide (511), and limiting rods (514) slide through the inner cavities of the two limiting blocks (513). One end of the limiting rod (514) is connected to the side wall of the blank frame (52); the other end of the positioning slide (511) is rotatably connected to an outer shaping roller (515).

6. The forging fixture for bearing rings according to claim 1, characterized in that, The enlarged hole twisting ring assembly (53) includes a steel sleeve (531) fixedly connected to the lifting screw slide (45). The top end of the steel sleeve (531) is provided with multiple sliding grooves. The inner cavity of the sliding grooves is provided with springs. The inner cavity of the steel sleeve (531) is provided with a built-in hydraulic rod (532). The top end of the built-in hydraulic rod (532) is provided with a support block (533). The top end of the support block (533) is conical. The outer wall of the steel sleeve (531) is provided with a conical toothed ring (536) that intermittently meshes with a conical gear (44).

7. The forging fixture for bearing rings according to claim 6, characterized in that, The top of the support block (533) is abutted against by a plurality of expansion blocks (534) arranged in a ring array. One end of the expansion block (534) is rotatably connected to an inner shaping roller (535). The top of each expansion block (534) is provided with a slider. The slider is slidably connected to the inner cavity of the groove, and one side of the slider is connected to the inner wall of the groove by a spring.

8. The forging fixture for bearing rings according to claim 5, characterized in that, The blank frame (52) has a discharge port on its side wall and a slot (521) on its inner side wall. A pusher plate (522) is hinged to the side wall of the discharge port, and the other end of the pusher plate (522) is movably inserted into the cavity of the slot (521).

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