A bearing ring forging apparatus

Abstract

This invention relates to the field of bearing manufacturing technology, and particularly to a bearing ring forging equipment, including a worktable, a drive device, a wall thickness control device, an end face control device, a forming unit, and an auxiliary unit. This invention solves the following technical problems: When rollers and sliding balls form the sidewalls of bearing rings, annular indentations easily appear on the outer wall, leading to stress concentration and cracking at thin-walled areas; the lack of forming of the inner and outer circumferential edges of the bearing ring end face easily results in defects such as localized protrusions, flash, burrs, and depressions, severely reducing processing quality. This invention can simultaneously rotate and extrude the upper and lower end faces, inner and outer walls, and inner and outer circumferential edges of the upper and lower end faces of the bearing ring blank, effectively improving rolling efficiency. Furthermore, through multi-directional coordinated extrusion, it ensures flat end faces, smooth inner and outer walls, uniform wall thickness, and defect-free edges, thereby ensuring the rolling effect and improving the processing quality of the bearing ring.

Description

Technical Field

[0001] This invention relates to the field of bearing manufacturing technology, and in particular to a bearing ring forging equipment. Background Technology

[0002] Currently, the forging of bearing rings typically employs upsetting, punching, and rolling processes. First, heated bar stock is upset and punched to create a ring-shaped blank with a central hole. Then, a ring rolling mill continuously and locally plastically processes the ring blank, gradually increasing its diameter and decreasing its wall thickness until it is finally formed into a ring forging blank that meets dimensional requirements. The rolling process is the core process that determines the dimensional accuracy and wall thickness uniformity of the finished bearing ring. The shaping of the end face and sidewalls of the ring blank during the rolling process directly determines key indicators such as the roundness, end face parallelism, and wall thickness difference of the forging, and also directly affects the machining allowance and product qualification rate of subsequent turning and heat treatment processes.

[0003] In the existing technology, some people in related fields have also optimized the rolling of bearing rings. For example, Chinese patent with publication number CN223862765U discloses a vertical rolling mill for bearing rings. The forged bearing rings are placed on a rotating roller, and the sliding balls on both sides of the rotating roller are brought into contact with the outer wall of the bearing ring. The first and second conical rollers clamp the bottom ends of the bearing ring. Then the height of the rotating roller is raised, and the bearing ring is stretched vertically in conjunction with the first and second conical rollers to achieve rolling expansion.

[0004] However, the aforementioned existing technologies still have some shortcomings in practical use: 1. Although the bearing rings can be stretched and expanded by the rotating rollers, the sliding ball, the first tapered roller and the second tapered roller, the sliding ball and the outer wall of the bearing ring are in spherical contact. Therefore, when the rotating rollers and the sliding ball shape the side wall of the bearing ring, annular indentations are easily caused on the outer wall of the bearing ring. This results in a reduction in wall thickness at the annular indentation and a lack of strength. In practical applications, this can lead to stress concentration at the thin wall, causing cracks and affecting the service life.

[0005] 2. The first and second tapered rollers are only used to shape the end face of the bearing ring. Therefore, the above-mentioned prior art lacks the ability to shape the inner and outer circumferential edges of the end face of the bearing ring. As a result, the metal is prone to flow to the unconstrained area of ​​the circumferential edges under the action of centrifugal force, resulting in defects such as local protrusions, flash, burrs and depressions on the circumferential edges, which seriously reduces the processing quality.

[0006] Therefore, based on the above-stated viewpoints, there is still room for improvement in existing bearing ring rolling techniques. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides a bearing ring forging apparatus, comprising a worktable, a drive device, a wall thickness control device, and an end face control device mounted on the upper end of the worktable. The drive device includes a drive roller for rotating the bearing ring blank, the drive roller being rotatably mounted on the upper end of the worktable. The wall thickness control device includes a core roller movably mounted on the upper end of the worktable, for cooperating with the drive roller to drive the bearing ring blank to rotate, thereby pressing the side walls of the bearing ring blank and controlling the wall thickness of the bearing ring blank. The end face control device is used to control the flatness of the upper and lower end faces of the bearing ring blank, as well as the overall height of the bearing ring blank, in conjunction with the worktable.

[0008] The end face control device includes a shaping unit for rolling the inner and outer walls of the bearing blank. The shaping unit has a holding roller and a pressing roller that roll against the inner and outer walls of the bearing blank to ensure that the side walls of the bearing blank remain vertical. An auxiliary unit for shaping the inner and outer circumferential edges of the upper and lower annular end faces of the bearing blank is installed between the driving device, the wall thickness control device and the end face control device to avoid uneven pressure on the circumferential edges of the bearing blank, resulting in defects such as depressions or protrusions.

[0009] Preferably, the end face control device further includes a tapered roller for pressing the upper end face of the bearing blank. The side of the tapered roller that contacts the upper end face of the bearing blank is arranged horizontally. A connecting cylinder is rotatably provided on the side of the tapered roller away from the bearing blank. A first bracket and a second bracket are installed on the connecting cylinder. A holding roller is rotatably installed at the lower end of the first bracket. An extrusion roller is rotatably installed at the lower end of the second bracket. A horizontal adjustment unit for adjusting the extrusion zone formed between the extrusion roller and the holding roller is installed on the second bracket.

[0010] Preferably, the auxiliary unit includes a lower pressure ring slidably sleeved on the outer wall of the drive roller and the core roller, and a top support ring slidably sleeved on the outer wall of the holding roller and the extrusion roller. The lower pressure ring and the top support ring respectively abut against the inner and outer circumferential edges of the upper and lower end faces of the bearing blank.

[0011] Preferably, both the drive roller and the core roller are provided with a positioning ring located above the lower pressure ring on their outer walls. Multiple fixing blocks are evenly installed on the outer wall of the positioning ring, and a positioning cylinder is installed on the fixing block. The bottom output end of the positioning cylinder is connected to the lower pressure ring through a connecting rod. The outer walls of both the drive roller and the core roller are provided with multiple vertical grooves corresponding to the positions of the connecting rods. The connecting rods are slidably assembled in the vertical grooves, and extension plates are installed on the outer walls of the vertical grooves.

[0012] Preferably, the side of the lower pressure ring and the top support ring that contacts the bearing blank is a horizontal plane, and the lower pressure ring and the top support ring gradually tilt away from the bearing blank from the horizontal plane to the outer contour. The tilted surface facilitates the guidance of the bearing blank, so that the bearing blank can be smoothly introduced into the horizontal plane of the lower pressure ring and the top support ring for circumferential edge shaping.

[0013] Preferably, the wall thickness control device further includes a displacement block installed on the workbench, an adjusting hydraulic cylinder installed on the displacement block, the bottom output end of the adjusting hydraulic cylinder being fixedly connected to the core roller, a plurality of reinforcing rods slidingly passing through the support frame, a support frame being fixedly sleeved on the upper end of the core roller, and the reinforcing rods slidingly passing through the support frame.

[0014] Preferably, the core roller has an insertion hole at its lower end, the worktable has a sliding hole, an insertion rod that matches the insertion hole is movably fitted in the sliding hole, a top support block is provided at the lower end of the insertion rod, and an auxiliary hydraulic cylinder is provided at the bottom of the worktable through a mounting bracket, the output end of the auxiliary hydraulic cylinder is connected to the top support block through a moving plate.

[0015] Preferably, the horizontal adjustment unit includes a positioning seat installed on the upper end of the second support. The positioning seat is located above the extrusion roller. An adjustment sliding hole is provided on the positioning seat. A linkage block is slidably assembled inside the adjustment sliding hole. The upper end of the extrusion roller moves through the linkage block. A telescopic cylinder is installed on the side of the positioning seat away from the holding roller. The output end of the telescopic cylinder is connected to the linkage block.

[0016] Preferably, the end face control device further includes a slide rail mounted on the upper end of the workbench, on which an electric slide table and a stabilizing frame are slidably mounted. The electric slide table is used to drive the stabilizing frame to move along the slide rail, and the stabilizing frame is connected to the connecting cylinder through a lifting hydraulic cylinder.

[0017] Preferably, the upper end of the worktable is provided with a first horizontal groove and a second horizontal groove for accommodating the holding roller and the extrusion roller. The upper end of the second horizontal groove has two symmetrically installed baffles for limiting the top support ring on the outer wall of the extrusion roller, so as to prevent the extrusion roller from falling out of the second horizontal groove when the second bracket drives the mandrel to move upward.

[0018] In summary, this application includes the following beneficial technical effects: I. This invention can simultaneously rotate and extrude the upper and lower end faces, inner and outer walls, and inner and outer circumferential edges of the upper and lower end faces of the bearing ring blank, effectively improving the rolling efficiency. Moreover, through multi-directional coordinated extrusion, it can ensure that the end face is flat, the inner and outer walls are smooth, the wall thickness is uniform, and the edges are free of defects, thereby ensuring the rolling effect and improving the processing quality of the bearing ring.

[0019] 2. The upper and lower end faces of the bearing blank are extruded and shaped by the tapered roller and the worktable. The tapered roller, in conjunction with the drive roller and the core roller, presses down on the bearing blank. The side wall of the bearing blank near the tapered roller is rolled by the holding roller and the extrusion roller to apply pressure and support to the inner and outer walls of the bearing blank. This prevents the upper and lower end faces of the bearing blank from lacking support during extrusion, which could lead to defects such as bending or swaying of the side walls. This ensures that the wall thickness of the bearing blank is uniform.

[0020] Third, this invention, through the cooperation of the lower pressure ring with the holding roller and the extrusion roller, and the cooperation of the top support ring with the drive roller and the core roller, can rotate and extrude the inner and outer circumferential edges of the upper and lower end faces of the bearing blank, ensuring the perpendicularity of the bearing blank edges. As the drive roller and the core roller, as well as the holding roller and the extrusion roller, extrude and shape the inner and outer circumferential edges of the upper end face of the bearing blank, it can avoid uneven pressure on the circumferential edges of the bearing blank, resulting in defects such as depressions or protrusions, and further ensure the rolling effect of the bearing blank.

[0021] Fourth, the present invention can assist in the extrusion and shaping of the side wall of the bearing blank by means of the cooperation of the holding roller and the extrusion roller. As the wall thickness of the bearing blank gradually decreases, the extrusion roller gradually moves closer to the holding roller to reduce the wall thickness forming range. It can adaptively adjust according to the wall thickness of the bearing blank to maintain the extrusion effect on the bearing blank. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the structure between the driving device and the wall thickness control device of the present invention.

[0025] Figure 3 This is a schematic diagram of the wall thickness control device of the present invention.

[0026] Figure 4 This is a schematic diagram of the structure between the drive roller, core roller, reinforcing rod, and support frame of the present invention.

[0027] Figure 5 This is a schematic diagram of the structure between the drive roller, core roller, and lower pressure ring of the present invention.

[0028] Figure 6 This is the present invention. Figure 5 A magnified view of part A.

[0029] Figure 7 This is a first structural schematic diagram of the end face control device of the present invention.

[0030] Figure 8 This is a schematic diagram of the second structure of the end face control device of the present invention.

[0031] Figure 9 This is the present invention. Figure 8 A magnified view of section B.

[0032] Figure 10 This is a schematic diagram of the structure of the horizontal adjustment unit of the present invention.

[0033] In the diagram, 1 represents the workbench; 2. Drive unit; 21. Drive roller; 211. Positioning ring; 212. Fixing block; 213. Positioning cylinder; 214. Connecting rod; 215. Vertical slide groove; 216. Extension plate; 22. Support frame; 23. Control motor; 3. Wall thickness control device; 31. Core roller; 32. Displacement block; 33. Control hydraulic cylinder; 34. Adjusting hydraulic cylinder; 35. Reinforcing rod; 36. Support frame; 37. Insert rod; 38. Top support block; 39. Auxiliary hydraulic cylinder; 4. End face control device; 41. Shaping unit; 411. Holding roller; 412. Extrusion roller; 42. Conical roller; 43. Connecting cylinder; 44. First support; 45. Second support; 46. Horizontal adjustment unit; 461. Positioning seat; 462. Linkage block; 463. Telescopic cylinder; 47. Slide rail; 48. Electric slide table; 49. Stabilizing frame; 5. Auxiliary unit; 51. Lower pressure ring; 52. Top support ring. Detailed Implementation

[0034] The following is in conjunction with the appendix Figures 1-10 The embodiments of the present invention will be described in detail below.

[0035] This application discloses a bearing ring forging equipment. It should be noted that this application is mainly used in the rolling and expanding process of bearing ring forging. Technically, it can simultaneously extrude and shape the upper and lower end faces and inner and outer walls of the bearing ring blank. In particular, when extruding the upper and lower end faces of the bearing ring blank, it can apply pressure and support to the inner and outer walls of the bearing ring blank, preventing defects such as bending or swaying due to lack of support during extrusion, thereby ensuring uniform wall thickness of the bearing ring blank. Furthermore, this application can also perform rotational extrusion and shaping on the inner and outer circumferential edges of the upper and lower end faces of the bearing ring blank, avoiding uneven pressure on the circumferential edges of the bearing ring blank, resulting in defects such as depressions or protrusions, and ensuring the rolling and expanding effect of the bearing ring blank.

[0036] Reference Figure 1 and Figure 2 As shown, a bearing ring forging equipment includes a worktable 1, a drive device 2, a wall thickness control device 3, and an end face control device 4 mounted on the upper end of the worktable 1. The drive device 2 includes a drive roller 21 for driving the bearing ring blank to rotate, and the drive roller 21 is rotatably mounted on the upper end of the worktable 1. The wall thickness control device 3 includes a core roller 31 movably mounted on the upper end of the worktable 1, which cooperates with the drive roller 21 to drive the bearing ring blank to rotate, and rolls the side wall of the bearing ring blank during rotation to control the wall thickness of the bearing ring blank. The end face control device 4 is used to control the flatness of the upper and lower end faces of the bearing ring blank and the overall height of the bearing ring blank by cooperating with the worktable 1.

[0037] The end face control device 4 includes a shaping unit 41 for rolling the inner and outer walls of the bearing blank. The shaping unit 41 has a holding roller 411 and a pressing roller 412 that roll against the inner and outer walls of the bearing blank. An auxiliary unit 5 for shaping the inner and outer circumferential edges of the upper and lower annular end faces of the bearing blank is installed between the drive device 2, the wall thickness control device 3 and the end face control device 4.

[0038] Furthermore, the drive device 2 also includes a support frame 22 installed on the upper end of the worktable 1, and a control motor 23 is provided at the lower end of the support frame 22. The output end of the control motor 23 is connected to the drive roller 21.

[0039] In actual operation, the ring bearing blank heated to the forging temperature is hoisted onto the worktable 1 and placed between the drive roller 21 and the core roller 31. The gap between the drive roller 21 and the core roller 31 is the wall thickness forming range of the bearing blank. Then, the drive device 2 drives the bearing blank to rotate through the drive roller 21. During this period, the core roller 31 rolls the side wall of the bearing blank to control the wall thickness of the bearing blank. At the same time, the end face control device 4, in conjunction with the worktable 1, rolls the upper end face of the bearing blank to control the height of the bearing blank. Since the side of the bearing blank away from the wall thickness control device 3 only receives end face roll pressing, the wall thickness on this side cannot be rolled and shaped, which can easily lead to bending and swaying of the side wall. Therefore, the shaping unit 41 enables the holding roller 411 and the extrusion roller 412 to roll and shape the inner and outer sides of the bearing blank, thereby preventing the bearing blank from having defects such as side wall bending and swaying when subjected to end face extrusion, and thus ensuring that the side wall of the bearing blank remains vertical.

[0040] In addition, during the rolling and expanding of the bearing ring blank, the auxiliary unit 5 can also extrude and shape the inner and outer circumferential edges of the upper and lower annular end faces of the bearing ring blank. This can effectively avoid defects such as depressions or protrusions caused by uneven pressure on the circumferential edges of the bearing ring blank. In this way, the upper and lower end faces, inner and outer walls, and inner and outer circumferential edges of the upper and lower end faces of the bearing ring blank can be rotated and extruded simultaneously. Through multi-directional coordinated extrusion, the end face can be flat, the wall thickness is uniform, and the edges are free of defects, thereby ensuring the rolling and expanding effect and improving the processing quality of the bearing ring.

[0041] Reference Figure 2 , Figure 3 and Figure 4As shown, in order to effectively control the wall thickness during the rolling process of the bearing blank, in this embodiment, the wall thickness control device 3 also includes a displacement block 32 slidably installed on the support frame 22 near the bearing blank. The support frame 22 is provided with a control hydraulic cylinder 33 for driving the displacement block 32 to move. The displacement block 32 is equipped with an adjustment hydraulic cylinder 34. The bottom output end of the adjustment hydraulic cylinder 34 is fixedly connected to the core roller 31. Several reinforcing rods 35 are slidably passed through the support frame 22. A support frame 36 is fixedly sleeved on the upper end of the core roller 31. The reinforcing rods 35 slide through the support frame 36. The cooperation between the reinforcing rods 35 and the support frame 36 can provide support for the core roller 31 and ensure the stability when the displacement block 32 drives the core roller 31 to move.

[0042] Furthermore, in this embodiment, the core roller 31 has an insertion hole at its lower end, the worktable 1 has a sliding hole, and an insertion rod 37 that cooperates with the insertion hole is movably assembled in the sliding hole. A top support block 38 is provided at the lower end of the insertion rod 37. An auxiliary hydraulic cylinder 39 is provided at the bottom of the worktable 1 through a mounting bracket. The output end of the auxiliary hydraulic cylinder 39 is connected to the top support block 38 through a moving plate.

[0043] When placing the bearing blank to be rolled, the adjusting hydraulic cylinder 34 is activated, which moves the core roller 31 upward, disengaging it from the insert rod 37 to allow space for the bearing blank. The bearing blank is then fitted onto the outside of the insert rod 37. Next, the adjusting hydraulic cylinder 34 moves the core roller 31 downward, allowing it to pass through the central through-hole in the bearing blank and fit onto the outside of the insert rod 37. Subsequently, the control hydraulic cylinder 33 and the auxiliary hydraulic cylinder 39 are activated. The control hydraulic cylinder 33 moves the core roller 31 closer to the drive roller 21 via the displacement block 32, while the auxiliary hydraulic cylinder 39 moves the core roller 31 closer to the drive roller 21 via the displacement block 32. The pressure cylinder 39 drives the core roller 31 to move to one side of the drive roller 21 through the top support block 38 and the insertion rod 37. Then, the drive roller 21 drives the bearing blank to rotate through friction, which facilitates the clamping of the bearing blank between the core roller 31 and the drive roller 21 for sidewall extrusion and shaping. By applying driving force to both the upper and lower ends of the core roller 31 at the same time, the vertical movement of the core roller 31 can be ensured, thereby ensuring that the core roller 31 applies vertical extrusion force to the inner wall of the bearing blank. Thus, the inner and outer walls of the bearing blank remain vertical under the action of the core roller 31 and the drive roller 21, respectively, ensuring the rolling effect.

[0044] After the bearing blank is rolled out, the adjusting hydraulic cylinder 34 drives the core roller 31 to move upward and reset, and the control hydraulic cylinder 33 and the auxiliary hydraulic cylinder 39 drive the core roller 31 to move away from the drive roller 21 and reset, so as to quickly remove the bearing blank.

[0045] It should be noted that the adjusting hydraulic cylinder 34, the controlling hydraulic cylinder 33 and the auxiliary hydraulic cylinder 39 are controlled synchronously by the existing PLC controller to ensure that the horizontal movement and lifting action of the core roller 31 are synchronized and to avoid the core roller 31 from tilting.

[0046] Reference Figure 5 , Figure 8 and Figure 9 As shown, in order to ensure that the inner and outer circumferential edges of the upper and lower annular end faces of the bearing blank are deformed, a corresponding auxiliary unit 5 is also provided in this embodiment. Specifically, the auxiliary unit 5 includes a lower pressure ring 51 that is slidably sleeved on the outer wall of the drive roller 21 and the core roller 31, and a top support ring 52 that is slidably sleeved on the outer wall of the holding roller 411 and the extrusion roller 412. The lower pressure ring 51 and the top support ring 52 respectively abut against the inner and outer circumferential edges of the upper and lower end faces of the bearing blank.

[0047] Furthermore, in this embodiment, the side of the lower pressure ring 51 and the top support ring 52 that contacts the bearing blank is a horizontal plane, and the lower pressure ring 51 and the top support ring 52 gradually tilt away from the horizontal plane and the outer contour towards the side away from the bearing blank. The tilted surface facilitates the guidance of the bearing blank, so that the bearing blank can be smoothly introduced into the horizontal plane of the lower pressure ring 51 and the top support ring 52 for circumferential edge shaping.

[0048] In actual operation, when the drive roller 21 and the core roller 31 rotate and roll the bearing blank, the end face control device 4 drives the tapered roller 42 to move to one side of the bearing blank and roll against the upper end of the bearing blank. The tapered roller 42 rotates adaptively under the friction with the bearing blank. Then, the end face control device 4 controls the tapered roller 42 to move away from the bearing blank, so that the distance between the tapered roller 42 and the core roller 31 gradually increases as the diameter of the bearing blank increases. During this period, the tapered roller 42 continues to move downward to cooperate with the drive roller 21 and the core roller 31 to press and shape the bearing blank. Thus, the tapered roller 42 can cooperate with the worktable 1 to extrude and shape the upper and lower end faces of the bearing blank.

[0049] At the same time, the end face control device 4 controls the holding roller 411 and the extrusion roller 412 to roll the side wall of the bearing ring blank, which is used to apply pressure and support to the inner and outer side walls of the bearing ring blank, to prevent the lack of support of the upper and lower end faces of the bearing ring blank during extrusion, which would cause defects such as bending or swaying of its side wall, thereby ensuring the rolling effect of the bearing ring blank.

[0050] In addition, the lower pressure ring 51, together with the holding roller 411 and the extrusion roller 412, and the top support ring 52, together with the drive roller 21 and the core roller 31, can rotate and extrude the inner and outer circumferential edges of the upper and lower end faces of the bearing blank, ensuring the perpendicularity of the bearing blank edges and avoiding uneven pressure on the circumferential edges of the bearing blank, resulting in defects such as depressions or protrusions, thereby further ensuring the rolling effect of the bearing blank.

[0051] Reference Figure 5 and Figure 6As shown, in order to extrude and shape the inner and outer circumferential edges of the upper surface of the bearing blank in real time, in this embodiment, both the drive roller 21 and the core roller 31 are provided with positioning rings 211 located above the lower pressure ring 51. Multiple fixing blocks 212 are evenly installed on the outer wall of the positioning ring 211, and positioning cylinders 213 are installed on the fixing blocks 212. The bottom output end of the positioning cylinder 213 is connected to the lower pressure ring 51 through a connecting rod 214. Both the drive roller 21 and the core roller 31 are provided with multiple vertical sliding grooves 215 corresponding to the positions of the connecting rods 214. The connecting rods 214 are slidably assembled in the vertical sliding grooves 215. An extension plate 216 is installed on the outer wall of the vertical sliding grooves 215 to limit the connecting rods 214, so that the connecting rods 214 can only slide up and down. Thus, the drive roller 21 and the core roller 31 can drive the positioning ring 211, the connecting rods 214 and the lower pressure ring 51 to rotate as a whole through the vertical sliding grooves 215 and the extension plate 216.

[0052] In actual operation, the positioning cylinder 213 is activated, which drives the connecting rod 214 and the lower pressure ring 51 to move downward as a whole. This causes the lower pressure ring 51 to apply pressure to the upper end face of the bearing blank. The lower pressure ring 51 rotates synchronously with the bearing blank. As the drive roller 21 and the core roller 31 squeeze the side wall of the bearing blank, the inner and outer circumferential edges of the upper end face of the bearing blank can be squeezed and shaped to prevent the bearing blank from deforming. The adjustable lower pressure ring 51 can be floated and adjusted according to the height of the bearing blank to provide real-time compression to the bearing blank. The total stroke of the connecting rod 214 in the vertical slide groove 215 is greater than the maximum lifting distance of the lower pressure ring 51, preventing the connecting rod 214 from causing the lower pressure ring 51 to get stuck during lifting.

[0053] Reference Figure 7 , Figure 8 and Figure 9 As shown, in order to avoid sidewall bending and swaying when the bearing blank is subjected to end face extrusion, in this embodiment, the end face control device 4 further includes a tapered roller 42 for rolling the upper end face of the bearing blank. The side of the tapered roller 42 that contacts the upper end face of the bearing blank is arranged horizontally. A connecting cylinder 43 is rotatably provided on the side of the tapered roller 42 away from the bearing blank. A first bracket 44 and a second bracket 45 are installed on the connecting cylinder 43. A holding roller 411 is rotatably installed at the lower end of the first bracket 44. An extrusion roller 412 is rotatably installed at the lower end of the second bracket 45. A horizontal adjustment unit 46 for adjusting the extrusion interval formed between the extrusion roller 412 and the holding roller 411 is installed on the second bracket 45.

[0054] Furthermore, in this embodiment, the end face control device 4 also includes a slide rail 47 installed on the upper end of the workbench 1. An electric slide table 48 and a stabilizing frame 49 are slidably mounted on the slide rail 47. The electric slide table 48 is used to drive the stabilizing frame 49 to move along the slide rail 47. The stabilizing frame 49 is connected to the connecting cylinder 43 through a lifting hydraulic cylinder.

[0055] During operation, when the core roller 31 and drive roller 21 rotate and extrude the bearing blank, the electric slide table 48 is activated. The electric slide table 48 drives the stabilizing frame 49 and the tapered roller 42 to move as a whole to one side of the bearing blank. During this process, the lifting hydraulic cylinder is activated, which drives the tapered roller 42 to move downward through the connecting cylinder 43, so that the tapered roller 42 rolls against the upper end of the bearing blank, allowing the tapered roller 42 to work with the worktable 1 to extrude and shape the upper and lower end faces of the bearing blank. At the same time, the connecting cylinder 43 passes through the first bracket 44. The second support 45 drives the retaining roller 411 and the extrusion roller 412 to roll the side wall of the bearing ring blank, which is used to apply pressure and support to the inner and outer side walls of the bearing ring blank, preventing the lack of support at the upper and lower end faces of the bearing ring blank during extrusion, which would cause defects such as bending or swaying of its side wall, thereby ensuring the rolling effect of the bearing ring blank; after the bearing ring blank is rolled, the lifting hydraulic cylinder drives the connecting cylinder 43, the tapered roller 42, the first support 44 and the retaining roller 411 to move upward as a whole, so that the bearing ring can be removed by external hoisting equipment.

[0056] Reference Figure 10 As shown, in order to facilitate the rolling pressure between the holding roller 411 and the extrusion roller 412 on the sidewalls of bearing blanks with different wall thicknesses, a horizontal adjustment unit 46 is also provided in this embodiment. Specifically, the horizontal adjustment unit 46 includes a positioning seat 461 installed on the upper end of the second bracket 45. The number of positioning seats 461 corresponds to the number of extrusion rollers 412 and is located above the extrusion rollers 412. An adjustment sliding hole is provided on the positioning seat 461, and a linkage block 462 is slidably assembled inside the adjustment sliding hole. The upper end of the extrusion roller 412 moves through the linkage block 462. A telescopic cylinder 463 is installed on the side of the positioning seat 461 away from the holding roller 411, and the output end of the telescopic cylinder 463 is connected to the linkage block 462.

[0057] In the initial state, the telescopic cylinder 463 drives the extrusion roller 412 to move away from the holding roller 411 via the linkage block 462, maximizing the wall thickness forming range between the extrusion roller 412 and the holding roller 411. When the tapered roller 42 presses against the upper surface of the bearing ring blank, it drives the holding roller 411 to roll against the inner wall of the bearing ring blank, while the extrusion roller 412 is located on the outer side of the bearing ring blank. At this time, the telescopic cylinder 463 is activated, and the telescopic cylinder 463 drives the extrusion roller 412 towards the bearing ring blank via the linkage block 462. As the blanks move closer together, the extrusion roller 412 exerts extrusion force on the outer wall of the bearing ring blank. Thus, through the cooperation of the holding roller 411 and the extrusion roller 412, the side wall of the bearing ring blank can be assisted in extrusion and shaping. During this process, the holding roller 411 and the extrusion roller 412 rotate adaptively due to the friction with the bearing ring blank. As the wall thickness of the bearing ring blank gradually decreases, the telescopic cylinder 463 drives the extrusion roller 412 to gradually move closer to the holding roller 411 to reduce the wall thickness forming range and maintain the extrusion effect on the bearing ring blank.

[0058] After the bearing ring blank is rolled and expanded, the telescopic cylinder 463 drives the extrusion roller 412 to move away from the bearing ring blank, thereby relieving the extrusion effect on the bearing ring blank. Then, the lifting hydraulic cylinder drives the tapered roller 42 and the holding roller 411 to move upward, so that the rolled and expanded bearing ring can be removed by the hoisting equipment.

[0059] It should be noted that the telescopic cylinder 463 is controlled by an external controller. The controller outputs a signal to the telescopic cylinder 463 according to the rolling feed amount of the bearing blank. As the wall thickness of the bearing blank continuously decreases, the telescopic cylinder 463 drives the forming range between the extrusion roller 412 and the holding roller 411 to decrease accordingly, thereby achieving dynamic adjustment. In addition, a mandrel is movably inserted inside the extrusion roller 412. The mandrel is fixedly connected to the linkage block 462. When the connecting cylinder 43 drives the tapered roller 42 to move upward, it drives the first support 44 and the second support 45 to move upward synchronously. The second support 45 drives the linkage block 462 and the mandrel to move upward synchronously through the positioning seat 461, so that the mandrel is pulled out from the extrusion roller 412, but the mandrel and the extrusion roller 412 are not separated, so as to facilitate the quick removal of the bearing blank.

[0060] It should be noted that the upper end of the worktable 1 is provided with a first horizontal groove and a second horizontal groove for accommodating the holding roller 411 and the extrusion roller 412. The upper end of the second horizontal groove is symmetrically equipped with two side guards for limiting the top support ring 52 on the outer wall of the extrusion roller 412, so as to prevent the extrusion roller 412 from falling out of the second horizontal groove when the second bracket 45 drives the mandrel to move upward.

[0061] During operation: First step: The ring bearing blank heated to the forging temperature is hoisted onto the worktable 1 and placed between the drive roller 21 and the core roller 31. Then, the hydraulic cylinder 33 drives the displacement block 32, the auxiliary hydraulic cylinder 39 drives the top support block 38 and the insertion rod 37 to move the core roller 31 to one side of the drive roller 21. Then, the drive roller 21 drives the bearing blank to rotate through friction, which makes it easier to clamp the bearing blank between the core roller 31 and the drive roller 21 for sidewall extrusion and shaping.

[0062] Step 2: Start the electric slide table 48. The electric slide table 48 drives the stabilizing frame 49 and the tapered roller 42 to move as a whole to one side of the bearing blank. During this process, the lifting hydraulic cylinder drives the connecting cylinder 43 and the tapered roller 42 to move downward, so that the tapered roller 42 rolls against the upper end of the bearing blank and works with the worktable 1 to compress and shape the upper and lower end faces of the bearing blank. At the same time, the connecting cylinder 43 drives the holding roller 411 and the extrusion roller 412 to roll the side wall of the bearing blank through the first bracket 44 and the second bracket 45. This is used to apply pressure and support to the inner and outer side walls of the bearing blank, preventing the upper and lower end faces of the bearing blank from lacking support during extrusion, which would cause defects such as bending or swaying of the side walls. This ensures the rolling effect of the bearing blank.

[0063] Step 3: Start the positioning cylinder 213. The positioning cylinder 213 drives the connecting rod 214 and the lower pressure ring 51 to move down as a whole, so that the lower pressure ring 51 applies pressure to the upper end face of the bearing blank. The lower pressure ring 51 rotates synchronously with the bearing blank. The inner and outer circumferential edges of the lower end face of the bearing blank are supported and shaped by the support ring 52 on the outer wall of the holding roller 411 and the extrusion roller 412. In this way, the inner and outer circumferential edges of the upper and lower end faces of the bearing blank can be extruded and shaped to avoid deformation of the bearing blank.

[0064] Step 4: After the bearing ring blank is rolled out, the adjusting hydraulic cylinder 34 drives the core roller 31 to move upward and reset. The control hydraulic cylinder 33 and the auxiliary hydraulic cylinder 39 drive the core roller 31 to move away from the drive roller 21 and reset. The lifting hydraulic cylinder drives the connecting cylinder 43, the tapered roller 42, the first bracket 44 and the holding roller 411 to move upward as a whole, so that the bearing ring can be removed by external hoisting equipment.

[0065] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0066] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bearing ring forging equipment, characterized in that, include: Workbench (1), drive device (2), wall thickness control device (3) and end face control device (4) installed on the upper end of workbench (1). The drive device (2) includes a drive roller (21) for driving the bearing blank to rotate, and the drive roller (21) is rotatably mounted on the upper end of the worktable (1); The wall thickness control device (3) includes a core roller (31) movably mounted on the upper end of the worktable (1), which cooperates with the drive roller (21) to drive the bearing blank to rotate, and rolls the side wall of the bearing blank during the process to control the wall thickness of the bearing blank. The end face control device (4) is used to control the flatness of the upper and lower end faces of the bearing blank and the overall height of the bearing blank on the mating worktable (1). The end face control device (4) includes a shaping unit (41) for rolling the inner and outer walls of the bearing blank. The shaping unit (41) has a holding roller (411) and a pressing roller (412) that roll against the inner and outer walls of the bearing blank to ensure that the side walls of the bearing blank remain vertical. An auxiliary unit (5) is installed between the drive device (2), the wall thickness control device (3), and the end face control device (4) to shape the inner and outer circumferential edges of the upper and lower annular end faces of the bearing blank, so as to avoid uneven pressure on the circumferential edges of the bearing blank, resulting in defects such as depressions or protrusions.

2. The bearing ring forging equipment according to claim 1, characterized in that: The end face control device (4) further includes a tapered roller (42) for rolling the upper end face of the bearing blank. The side of the tapered roller (42) that contacts the upper end face of the bearing blank is arranged horizontally. A connecting cylinder (43) is rotatably provided on the side of the tapered roller (42) away from the bearing blank. A first bracket (44) and a second bracket (45) are installed on the connecting cylinder (43). A holding roller (411) is rotatably installed at the lower end of the first bracket (44). A squeezing roller (412) is rotatably installed at the lower end of the second bracket (45). A horizontal adjustment unit (46) for adjusting the squeezing interval formed between the squeezing roller (412) and the holding roller (411) is installed on the second bracket (45).

3. The bearing ring forging equipment according to claim 1, characterized in that: The auxiliary unit (5) includes a lower pressure ring (51) that is slidably sleeved on the outer wall of the drive roller (21) and the core roller (31), and a top support ring (52) that is slidably sleeved on the outer wall of the retaining roller (411) and the extrusion roller (412). The lower pressure ring (51) and the top support ring (52) respectively abut against the inner and outer circumferential edges of the upper and lower end faces of the bearing blank.

4. The bearing ring forging equipment according to claim 3, characterized in that: The outer walls of the drive roller (21) and the core roller (31) are provided with positioning rings (211) located above the lower pressure ring (51). Multiple fixing blocks (212) are evenly installed on the outer wall of the positioning ring (211). A positioning cylinder (213) is installed on the fixing block (212). The bottom output end of the positioning cylinder (213) is connected to the lower pressure ring (51) through a connecting rod (214). The outer walls of the drive roller (21) and the core roller (31) are provided with multiple vertical grooves (215) corresponding to the positions of the connecting rod (214). The connecting rod (214) is slidably assembled in the vertical groove (215), and an extension plate (216) is installed on the outer wall of the vertical groove (215).

5. The bearing ring forging equipment according to claim 3, characterized in that: The side of the lower pressure ring (51) and the top support ring (52) that contacts the bearing blank is a horizontal plane, and the lower pressure ring (51) and the top support ring (52) gradually tilt away from the bearing blank from the horizontal plane to the outer contour. The tilted surface facilitates the guidance of the bearing blank, so that the bearing blank can be smoothly introduced into the horizontal plane of the lower pressure ring (51) and the top support ring (52) for circumferential edge shaping.

6. The bearing ring forging equipment according to claim 1, characterized in that: The wall thickness control device (3) also includes a displacement block (32) installed on the workbench (1), an adjusting hydraulic cylinder (34) is installed on the displacement block (32), the bottom output end of the adjusting hydraulic cylinder (34) is fixedly connected to the core roller (31), a number of reinforcing rods (35) are slidably passed through the support frame (22), and a support frame (36) is fixedly sleeved on the upper end of the core roller (31), and the reinforcing rods (35) slide through the support frame (36).

7. The bearing ring forging equipment according to claim 1, characterized in that: The core roller (31) has an insertion hole at its lower end, and the worktable (1) has a sliding hole. An insertion rod (37) that matches the insertion hole is movably installed in the sliding hole. A top support block (38) is provided at the lower end of the insertion rod (37). An auxiliary hydraulic cylinder (39) is provided at the bottom of the worktable (1) through a mounting bracket. The output end of the auxiliary hydraulic cylinder (39) is connected to the top support block (38) through a moving plate.

8. A bearing ring forging equipment according to claim 2, characterized in that: The horizontal adjustment unit (46) includes a positioning seat (461) installed on the upper end of the second bracket (45). The positioning seat (461) is located above the extrusion roller (412). An adjustment sliding hole is provided on the positioning seat (461). A linkage block (462) is slidably assembled inside the adjustment sliding hole. The upper end of the extrusion roller (412) moves through the linkage block (462). A telescopic cylinder (463) is installed on the side of the positioning seat (461) away from the holding roller (411). The output end of the telescopic cylinder (463) is connected to the linkage block (462).

9. A bearing ring forging equipment according to claim 2, characterized in that: The end face control device (4) also includes a slide rail (47) installed on the upper end of the workbench (1). An electric slide table (48) and a stabilizing frame (49) are slidably mounted on the slide rail (47). The electric slide table (48) is used to drive the stabilizing frame (49) to move along the slide rail (47). The stabilizing frame (49) is connected to the connecting cylinder (43) through a lifting hydraulic cylinder.

10. A bearing ring forging equipment according to claim 5, characterized in that: The upper end of the worktable (1) is provided with a first horizontal groove and a second horizontal groove for accommodating the holding roller (411) and the extrusion roller (412). The upper end of the second horizontal groove is symmetrically equipped with two side guards for limiting the top support ring (52) of the outer wall of the extrusion roller (412).

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