Bearing outer ring forging clamping device

Abstract

The application belongs to the technical field of bearing forging, in particular to a clamping equipment for bearing outer ring forging, which comprises a base, a support frame, a hydraulic cylinder, a functional clamp and a boss. The base is divided into an upper layer and a lower layer. The support frame is installed on the upper layer of the base. The hydraulic cylinder is installed at the middle position of the support frame. The bearing forging punching punch is installed at the output end of the hydraulic cylinder. The lower end of the bearing forging punching punch is provided with the boss. The bottom of the boss is rotationally connected with the functional clamp. The application has the functions of integrated multi-process collaborative operation, accurate centering positioning, automatic rotary trimming, steel brush removal of black oxide and automatic waste cleaning and collection. The application realizes the integrated operation of centering positioning, mold closing, die casting, rotary trimming and polishing and cleaning in the bearing outer ring forging process, effectively solving the problems of single function of traditional clamping equipment, easy eccentricity of blank and unevenness of forming surface.

Description

Technical Field

[0001] This invention belongs to the field of bearing forging technology, specifically a clamping device for forging the outer ring of a bearing. Background Technology

[0002] Bearings, as core components for mechanical transmission and heavy-duty support, are widely used in many fields such as engineering machinery, precision machine tools, and automobile manufacturing. The forging quality of the bearing outer ring directly determines the overall dimensional accuracy, structural strength, and service life of the bearing, making it a critical process in the bearing manufacturing process. Currently, the forging of bearing outer rings generally adopts a combined hot forging and punching process. During the processing, clamping equipment is required for blank positioning, mold forming, and auxiliary finishing.

[0003] Existing bearing forging clamping equipment typically suffers from numerous technical shortcomings, such as limited functionality, low automation, insufficient machining accuracy, and difficulty in waste removal, making it difficult to meet the demands of high-precision and high-efficiency mass production.

[0004] Existing bearing forging clamping equipment usually only has a single bearing blank clamping function, and cannot realize the integrated operation of centering and positioning, forging and shaping, edge trimming and waste cleaning. After the blank is loaded, manual assistance is required for centering, which is very easy to cause eccentricity and offset, resulting in the workpiece roundness exceeding the standard and uneven wall thickness after forging and punching. In addition, if the billet itself is irregular, the end is prone to unevenness during the die casting process, resulting in misalignment and poor flatness of the forming surface. The subsequent grinding work is required to make it flat, which is not only time-consuming and labor-intensive, affecting production efficiency, but also increases production costs. Summary of the Invention

[0005] The purpose of this invention is to provide a clamping device for forging bearing outer rings to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is: a clamping device for forging the outer ring of a bearing, comprising a base, a support frame, a hydraulic cylinder, a functional fixture, and a boss. The base is divided into an upper layer and a lower layer. The support frame is installed on the upper layer of the base. The hydraulic cylinder is installed in the middle of the support frame. A bearing forging punch is installed at the output end of the hydraulic cylinder. A boss is provided at the lower end of the bearing forging punch. The bottom of the boss is rotatably connected to the functional fixture. The functional fixture includes a slide rail base, racks, transmission gears, a first servo motor, a pusher, a petal mold, a pressure relief hole, a beveled cutting edge, a centering clamping block, a grinding block, a steel brush, a notch, and a reset component. The slide rail base is installed on the upper layer of the base and is slidably connected to symmetrically arranged racks. The two racks mesh with the transmission gear, which is connected to the outer ring of the output end of the first servo motor passing through the upper layer of the base. The first servo motor is installed on the lower layer of the base. The two racks are respectively connected to the pusher. The top of the first servo motor is rotatably connected to a boss. The boss is symmetrically provided with a petal mold, a centering clamping block, and a grinding block. The petal mold, the centering clamping block, and the grinding block are all connected to a switching and cleaning mechanism. The valve mold has multiple pressure relief holes equidistantly spaced in an arc shape, and the upper opening of each pressure relief hole is provided with a beveled cutting edge.

[0007] Furthermore, the switching cleaning mechanism includes a planetary external gear, a planetary internal gear, a support gear, a support guide rod, a second servo motor, a linkage rod, and a telescopic scraper. The support gear is rotatably connected to the output end of the first servo motor. The support gear meshes with multiple planetary internal gears, and the multiple planetary internal gears mesh with the inner ring of a planetary external gear. The bottoms of the multiple planetary internal gears are drive-connected to the support guide rods. The multiple support guide rods are rotatably connected to the upper layer of the base. One of the support guide rods is drive-connected to the second servo motor, which is installed on the lower layer of the base.

[0008] Furthermore, the planetary external gear is connected to a plurality of symmetrically arranged linkage rods, each linkage rod being connected to one end of a reset component, and the other end of the reset component being connected to a centering clamping block, a grinding block, and a leaf mold.

[0009] Furthermore, one end of the support frame is connected to a telescopic scraper rod, and the telescopic scraper rod is in movable contact with the top of the pressure relief hole.

[0010] Furthermore, the inner wall of the grinding block is provided with a steel brush, and the grinding block has multiple notches and grooves equidistantly spaced in an arc shape.

[0011] Furthermore, the base has a hollowed-out arc-shaped groove, the inner wall of the outer ring of the arc-shaped groove is connected to the barrier plate, and a collection groove is provided at the lower end of the barrier plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) This invention integrates multiple processes such as centering and positioning, die casting, rotary trimming, and grinding and cleaning into a single device by setting up functional fixtures and a switching and cleaning mechanism. It has the ability to perform composite operations in multiple stations and modes. The first servo motor drives the pusher through the transmission gear and rack, and cooperates with the centering clamping block, the petal mold, and the grinding block in sequence to realize the automatic switching of centering, die casting, and grinding. The switching and cleaning mechanism adopts a planetary gear system structure. The second servo motor drives the internal planetary gear and the external planetary gear to mesh and transmit the transmission, so that the linkage rod drives the components of different stations to enter the working position in sequence. This device realizes the automatic connection and switching of multiple processes in the forging process of bearing outer ring, without manual intervention or multiple clamping, thus improving processing efficiency and the degree of automation of the equipment.

[0013] (2) The present invention symmetrically sets centering clamps on the boss, and pushes them inward synchronously to achieve precise centering and positioning of the billet, effectively avoiding problems such as uneven wall thickness and excessive roundness caused by billet offset. Multiple pressure discharge holes are opened at equal intervals on the petal mold, which can discharge excess metal during the die casting process and prevent internal porosity or insufficient filling; the upper end of the pressure discharge hole is provided with a beveled cutting edge, which cuts and trims the edge of the workpiece when the petal mold rotates, solving the problem of uneven rise and misalignment of the end after die casting and reducing the amount of subsequent grinding; a steel brush is set on the inner wall of the grinding block, which grinds the surface of the workpiece under the rotation drive, effectively removing the black oxide generated during the forging process, preventing the oxide from embedding into the surface of the workpiece during subsequent processing, and improving the surface finish of the workpiece.

[0014] (3) One end of the support frame of the present invention is connected to a telescopic scraper. The telescopic scraper makes active contact with the top of the pressure relief hole on the petal mold. During the rotation cleaning process of the petal mold, the telescopic scraper removes the residual waste that may be stuck on the pressure relief hole. After being blocked by the baffle plate, it falls into the collection tank for recycling, which effectively avoids the accumulation or sticking of waste and affects subsequent processing, ensures the continuous and stable operation of the equipment, reduces the frequency of manual cleaning, and reduces labor intensity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the functional fixture of the present invention; Figure 3 This is a schematic diagram of the structure of the switching cleaning mechanism of the present invention; Figure 4 This is a partial structural schematic diagram of the functional fixture of the present invention; Figure 5 This is a schematic diagram of the structure of the valve mold of the present invention; Figure 6 This is a schematic diagram of the edge grinding block of the present invention; Figure 7 This is a schematic diagram of the structure of the base of the present invention.

[0016] In the diagram: 1. Base, 11. Barrier plate, 12. Collection trough, 2. Support frame, 3. Hydraulic cylinder, 4. Functional fixture, 41. Slide rail seat, 42. Rack, 43. Transmission gear, 44. First servo motor, 45. Pushing component, 46. Petal mold, 461. Pressure discharge hole, 462. Beveled cutting edge, 47. Centering clamping block, 48. Grinding block, 481. Steel brush, 482. Notch groove, 49. Reset component, 5. Switching cleaning mechanism, 51. Planetary external gear, 52. Planetary internal gear, 53. Support gear, 54. Support guide rod, 55. Second servo motor, 56. Linkage rod, 57. Telescopic scraper, 6. Boss. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "comprising" or "including," and similar terms used in this invention, mean that the element or object preceding the term encompasses the element or object listed following the term and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] like Figures 1 to 7As shown, a clamping device for forging the outer ring of a bearing includes a base 1, a support frame 2, a hydraulic cylinder 3, a functional fixture 4, and a boss 6. The base 1 is divided into an upper layer and a lower layer. The support frame 2 is installed on the upper layer of the base 1, and the hydraulic cylinder 3 is installed in the middle of the support frame 2. A bearing forging punch is installed at the output end of the hydraulic cylinder 3. A boss 6 is provided at the lower end of the bearing forging punch, and the bottom of the boss 6 is rotatably connected to the functional fixture 4. The functional fixture 4 includes a slide rail 41, a rack 42, a transmission gear 43, a first servo motor 44, a pusher 45, a mold 46, a pressure discharge hole 461, a beveled cutting edge 462, a centering clamping block 47, a grinding block 48, a steel brush 481, a notch groove 482, and a reset component 49. 9 consists of a spring and a telescopic rod. The telescopic rod is fitted with a spring on its outer ring, which always provides elastic contraction force to retract the telescopic rod. A slide rail seat 41 is installed on the upper layer of the base 1. The slide rail seat 41 is slidably connected to symmetrically arranged racks 42. The two racks 42 mesh with a transmission gear 43. The transmission gear 43 is connected to the outer ring of the output end of the first servo motor 44, which passes through the upper layer of the base 1. The first servo motor 44 is installed on the lower layer of the base 1. The two racks 42 are respectively connected to the pusher 45. The top of the first servo motor 44 is rotatably connected to the boss 6. The boss 6 is symmetrically provided with a petal mold 46, a centering clamping block 47, and a grinding block 48. The petal mold 46, the centering clamping block 47, and the grinding block 48 are all connected to a switching and cleaning mechanism 5. This invention integrates multiple processes such as centering and positioning, die casting, rotary trimming, and grinding and cleaning into the same equipment by setting up a functional fixture 4, which has the ability to perform composite operations in multiple stations and modes. The first servo motor 44 drives the pusher 45 through the transmission gear 43 and rack 42, which in turn cooperates with the centering clamping block 47, the ferrule 46, and the grinding block 48 to achieve automatic switching between centering, mold closing, and grinding. This equipment realizes the automatic connection and switching of multiple processes in the bearing outer ring forging process, without the need for manual intervention or multiple clamping, thus improving processing efficiency and the degree of equipment automation.

[0020] The die 46 has multiple pressure relief holes 461 equidistantly arranged in an arc shape. The upper opening of each pressure relief hole 461 is provided with a beveled cutting edge 462. The multiple pressure relief holes 461 equidistantly arranged on the die 46 can discharge excess metal during the die casting process, preventing internal porosity or insufficient filling. The beveled cutting edge 462 at the upper opening of the pressure relief hole 461 can cut and trim the edge of the workpiece when the die 46 rotates, solving the problem of unevenness and misalignment at the end after die casting, and reducing the amount of subsequent grinding.

[0021] The switching cleaning mechanism 5 includes a planetary external gear 51, a planetary internal gear 52, a support gear 53, a support guide rod 54, a second servo motor 55, a linkage rod 56, and a telescopic scraper 57. The support gear 53 is rotatably connected to the output end of the first servo motor 44. The support gear 53 meshes with multiple planetary internal gears 52, which mesh with the inner ring of a planetary external gear 51. The bottom of the multiple planetary internal gears 52 is connected to the support guide rod 54. The multiple support guide rods 54 are rotatably connected to the upper layer of the base 1. One of the support guide rods 54 is connected to the second servo motor 55. The second servo motor 55 is installed on the lower layer of the base 1. The second servo motor 55 drives the support guide rod 54 to rotate, which drives the planetary internal gear 52 to mesh and transmit power between the inner ring of the planetary external gear 51 and the support gear 53. This allows components such as the petal mold 46, the centering clamp 47, and the edge grinding block 48 connected to the linkage rod 56 to be switched to the working position in sequence. The planetary gear transmission structure is compact, the transmission is smooth, and the positioning is precise. It can realize the precise switching and synchronous rotation drive of multiple workstation components, providing a reliable power foundation for the multi-process integration of functional fixture 4, and further improving the automation level of the equipment and the consistency of processing.

[0022] The planetary external gear 51 is connected to multiple symmetrically arranged linkage rods 56. Each linkage rod 56 is connected to one end of a reset component 49, and the other end of the reset component 49 is connected to the centering clamping block 47, the grinding edge block 48, and the petal mold 46. By setting the linkage rods 56 and the reset components 49, the rotational motion of the planetary external gear 51 is converted into the station switching and reset actions of the centering clamping block 47, the grinding edge block 48, and the petal mold 46. When the pusher 45 retracts, each component automatically resets and detaches from the workpiece under the action of the reset component 49, avoiding interference with subsequent processes or unloading. This equipment realizes automatic switching and reset of station components, simplifies the control logic, and improves the continuity and reliability of equipment operation.

[0023] One end of the support frame 2 is connected to the telescopic scraper 57, which consists of a spring, a telescopic rod, and a front scraper block. The telescopic rod is fitted with a spring, which provides elastic thrust. The scraper block is connected to one end of the telescopic rod and is used to clean residual waste from the pressure discharge hole 461. The telescopic scraper 57 is in movable contact with the top of the pressure discharge hole 461. The telescopic scraper 57 is connected to one end of the support frame 2 and is in movable contact with the top of the pressure discharge hole 461 on the mold 46. During the rotation and cleaning process of the mold 46, the telescopic scraper 57 removes any residual waste that may be stuck to the pressure discharge hole 461, effectively preventing waste from clogging the pressure discharge hole 461, ensuring that the pressure discharge hole 461 remains unobstructed, ensuring that excess metal is discharged smoothly during the die casting process, and reducing the frequency of manual cleaning and labor intensity.

[0024] The inner wall of the grinding block 48 is equipped with a steel brush 481. The grinding block 48 has multiple arc-shaped notches 482 at equal intervals. Under the rotation drive, the steel brush 481 grinds the surface of the workpiece, effectively removing the black oxide generated during the forging process and preventing the oxide from embedding into the workpiece surface during subsequent processing, thus improving the surface finish of the workpiece. At the same time, the grinding block 48 has multiple arc-shaped notches 482 at equal intervals, which facilitates the timely discharge of flaking oxide powder, preventing the accumulation of chips from affecting the grinding effect and ensuring grinding quality and efficiency.

[0025] The base 1 has a hollow arc-shaped groove. The inner wall of the outer ring of the arc-shaped groove is connected to the barrier plate 11. The lower end of the barrier plate 11 is provided with a collection trough 12. Waste generated during the cleaning process of the telescopic scraper 57 falls through the arc-shaped groove, and after being blocked by the barrier plate 11, it falls into the collection trough 12 for recycling.

[0026] The working principle of this invention is as follows: After the equipment is started, the first servo motor 44 installed on the lower layer of the base 1 drives the transmission gear 43 on the outer ring of its output end to rotate. By meshing with two symmetrically arranged racks 42, the two racks 42 are driven to slide relative to each other on the slide rail seat 41. Thus, the pushers 45 connected to the racks 42 push the centering clamp 47 inward synchronously, so as to accurately center and position the bearing outer ring blank placed on the boss 6. Then, the first servo motor 44 reverses and drives the racks 42 and pushers 45 to reset through the transmission gear 43. At this time, the centering clamp 47 is reset and released outward under the action of the reset member 49 connected to it.

[0027] Next, the second servo motor 55 in the switching cleaning mechanism 5 drives the support guide rod 54 to rotate, which drives the planetary internal gear 52 connected to it to mesh between the inner ring of the planetary external gear 51 and the support gear 53. This causes the petal mold 46 connected to the linkage rod 56 and its connected reset component 49 to be switched to the pusher 45 position. The pusher 45 pushes inward again to close the petal mold 46. At this time, the hydraulic cylinder 3 drives the bearing forging punch to descend and die-cast the blank. During the die-casting process, multiple pressure discharge holes 461 equidistantly opened on the petal mold 46 are used to discharge excess metal.

[0028] After molding, the cleaning mechanism 5 is switched on again, causing the petal mold 46 to rotate under the drive of the planetary gear system. The inclined cutting edge 462 at the upper end of the pressure discharge hole 461 is used to rotate and trim the edge of the workpiece. Then, the transmission gear 43 drives the rack 42 and the pusher 45 to reset. The petal mold 46 is reset and separated from the workpiece under the action of the reset member 49.

[0029] Next, the cleaning mechanism 5 switches the grinding block 48 to the position of the pusher 45. The pusher 45 pushes the grinding block 48 to fit against the workpiece, and the planetary gear system drives the grinding block 48 to rotate. The steel brush 481 on its inner wall peels off the surface oxide of the workpiece. At the same time, multiple notches 482 equidistantly opened on the grinding block 48 facilitate the discharge of the peeled oxide. Finally, the bearing forging punch disengages, and the formed blank can be taken out.

[0030] During the aforementioned rotation cleaning process, the telescopic scraper 57 installed at one end of the support frame 2 makes active contact with the top of the pressure relief hole 461, removing any residual waste that may be stuck to the pressure relief hole 461. The residual waste falls through the hollow arc-shaped groove opened on the base 1, and after being blocked and collected by the baffle plate 11 connected to the inner wall of the outer ring of the arc-shaped groove, it falls into the collection groove 12 at the lower end for recycling.

[0031] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A clamping device for forging the outer ring of a bearing, comprising a base (1), a support frame (2), a hydraulic cylinder (3), a functional fixture (4), and a boss (6), wherein the base (1) is divided into an upper layer and a lower layer, characterized in that, The base (1) is equipped with a support frame (2) on the upper layer. A hydraulic cylinder (3) is installed in the middle of the support frame (2). A bearing forging punch is installed at the output end of the hydraulic cylinder (3). A boss (6) is provided at the lower end of the bearing forging punch. The bottom of the boss (6) is rotatably connected to the functional fixture (4). The functional fixture (4) includes a slide rail base (41), a rack (42), a transmission gear (43), a first servo motor (44), a pusher (45), a flap mold (46), a pressure discharge hole (461), a beveled cutting edge (462), a centering clamping block (47), a grinding block (48), a steel brush (481), a notch groove (482), and a reset member (49). The slide rail base (41) is installed on the upper layer of the base (1). The slide rail base (41) is slidably connected to the symmetrically arranged racks (42). The two racks (42) mesh with the transmission gear (43). The transmission gear (43) is connected to the outer ring of the output end of the first servo motor (44) passing through the upper layer of the base (1). The first servo motor (44) is installed on the lower layer of the base (1). The two racks (42) are connected to the pusher (45) respectively. The top of the first servo motor (44) is rotatably connected to the boss (6). The boss (6) is symmetrically provided with a petal mold (46), a centering clamping block (47) and a grinding block (48). The petal mold (46), the centering clamping block (47) and the grinding block (48) are all connected to a switching cleaning mechanism (5). The valve mold (46) has multiple pressure relief holes (461) equidistantly spaced in an arc shape, and the upper opening of the pressure relief hole (461) is provided with a beveled cutting edge (462).

2. The clamping device for forging bearing outer rings according to claim 1, characterized in that, The switching cleaning mechanism (5) includes a planetary external gear (51), a planetary internal gear (52), a support gear (53), a support guide rod (54), a second servo motor (55), a linkage rod (56), and a telescopic scraper (57). The support gear (53) is rotatably connected to the output end of the first servo motor (44). The support gear (53) meshes with multiple planetary internal gears (52). The multiple planetary internal gears (52) mesh with the inner ring of a planetary external gear (51). The bottom of the multiple planetary internal gears (52) is connected to the support guide rod (54). The multiple support guide rods (54) are rotatably connected to the upper layer of the base (1). One of the support guide rods (54) is connected to the second servo motor (55). The second servo motor (55) is installed on the lower layer of the base (1).

3. The clamping device for forging bearing outer rings according to claim 2, characterized in that, The planetary external gear (51) is connected to a plurality of symmetrically arranged linkage rods (56), each linkage rod (56) is connected to one end of a reset member (49), and the other end of the reset member (49) is connected to the centering clamping block (47), the edge grinding block (48) and the petal mold (46).

4. The clamping device for forging bearing outer rings according to claim 1, characterized in that, One end of the support frame (2) is connected to the telescopic scraper (57), and the telescopic scraper (57) is in active contact with the top of the pressure relief hole (461).

5. A clamping device for forging bearing outer rings according to claim 1, characterized in that, The inner wall of the grinding block (48) is provided with a steel brush (481), and the grinding block (48) has multiple notches (482) equidistantly spaced in an arc shape.

6. The clamping device for forging bearing outer rings according to claim 1, characterized in that, The base (1) has a hollowed-out arc-shaped groove, the inner wall of the outer ring of the arc-shaped groove is connected to the barrier plate (11), and a collection groove (12) is provided at the lower end of the barrier plate (11).

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