Processing and manufacturing method of special-shaped bearing ring with flange

Abstract

A special-shaped bearing ring, a raceway diameter measuring mechanism and an auxiliary tool are included, the special-shaped bearing ring comprises a small outer circle, one side of the small outer circle is connected with a flange end face, a large outer circle is arranged on the outer wall of the flange end face, and the large outer circle is connected with the raceway diameter measuring mechanism. An arc-shaped blade shoulder is arranged at the joint of the flange end face and the small outer circle, an arc-shaped groove and a U-shaped groove are formed in the bottom of the flange end face at the same time, the arc-shaped groove extends to the small outer circle, and a roller path is arranged on the inner wall of the small outer circle in a surrounding mode; comprising the following specific steps that S1, turning is conducted, specifically, the rough shape of the bearing is turned; s2, soft grinding of double end faces; s3, softly grinding an outer circle; s4, turning a large hole; according to the machining and manufacturing method of the special-shaped bearing ring with the flange, the bearing strength can be enhanced and the machining precision can be guaranteed at the same time by improving the bearing design and the machining process.

Description

Technical Field

[0001] The invention relates to the technical field of bearing processing, and in particular to a processing and manufacturing method of a special-shaped bearing ring with a flange. Background Art

[0002] Flange bearings are specially designed bearings, which feature a flange on the outer ring of the bearing. This design not only enhances the structural strength of the bearing, but also facilitates installation and positioning. Due to the flange, the bearing can withstand large axial and radial loads and torques, and can be widely used in high-load and high-speed mechanical equipment.

[0003] In the aerospace field, special-shaped bearings need to meet harsh conditions such as lightweight, high temperature resistance, and high strength. In addition to the aerospace field, special-shaped bearings are also widely used in other industrial fields that require high precision and special structures, such as precision machinery, medical equipment, and automobile manufacturing. The difficulty of its design and processing is reflected in the following aspects:

[0004] 1. High precision requirements: Special-shaped bearings, especially those with special structures such as flanges, have extremely high requirements for size, shape and position tolerances, and position. Due to structural special shapes and heat treatment deformation, traditional processing technology is difficult to ensure processing accuracy at the same time.

[0005] 2. Processing benchmark problem: For special-shaped bearings, due to their special external structure, they cannot be processed using the common method of using the end face and outer diameter as the processing benchmark. Therefore, special processing technology and processing tooling must be designed to solve this problem.

[0006] 3. Structural complexity: Special-shaped bearings contain special design elements such as mounting and positioning structures perpendicular to the outer cylindrical surface of the outer ring and pin holes. These designs increase the complexity and processing difficulty of the bearings.

[0007] To this end, we are committed to developing a special-shaped bearing ring and solving the problem that the groove cannot be processed. Summary of the invention

[0008] The invention discloses a method for processing and manufacturing a special-shaped bearing ring with a flange, aiming to develop a special-shaped bearing ring and solve the technical problem that slotting cannot be processed.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] A processing and manufacturing method for a special-shaped bearing ring with a flange, comprising a special-shaped bearing ring, a raceway diameter measuring mechanism and an auxiliary tooling, wherein the special-shaped bearing ring comprises a small outer circle, and one side of the small outer circle is connected to a flange end face, the outer wall of the flange end face is provided with a large outer circle, a circular arc-shaped shoulder is provided at the connection between the flange end face and the small outer circle, the bottom of the flange end face is provided with an arc-shaped groove and a U-shaped groove, and the arc-shaped groove extends to the small outer circle, and a raceway is provided around the inner wall of the small outer circle;

[0011] The specific steps include:

[0012] S1: Turning: Turning the general shape of the bearing;

[0013] S2: Soft grinding of double end faces: grinding of double end faces with soft abrasives;

[0014] S3: Soft grinding of outer circle: use soft abrasive to grind the outer circle;

[0015] S4: Turning large holes;

[0016] S5: inside and outside corners of the car;

[0017] S6: Turning small outer circle and base surface;

[0018] S7: Turning small outer corners;

[0019] S8: Turning arc-shaped blade shoulder: Turning an arc-shaped blade shoulder;

[0020] S9: heat treatment;

[0021] S10: grinding both end surfaces;

[0022] S11: Rough grinding of large outer circle;

[0023] S12: Rough grinding of small outer circle and base surface;

[0024] S13: Fine grinding of small outer circle and base surface;

[0025] S14: grinding hole;

[0026] S15: Rough grinding groove: use coarse abrasive to grind the inner wall of the raceway;

[0027] S16: Fine grinding groove: Use fine abrasive to grind the inner wall of the raceway;

[0028] S17: Fine grinding groove: grinding the inner wall of the raceway with finer abrasive;

[0029] S18: Grinding small outer circle and base surface: Use profiled grinding wheel to grind small outer circle and base surface at the same time, and the chamfer of grinding wheel has the same radius as arc-shaped cutting edge shoulder fillet;

[0030] S19: Place the auxiliary tooling: place the ferrule on the auxiliary tooling;

[0031] S20: Grinding U-shaped groove: To process the U-shaped groove, adjust the angle of the grinding wheel to be perpendicular to the workpiece, trim the diameter of the grinding wheel to the same diameter as the U-shaped groove, feed and grind left and right to complete the U-shaped groove processing. During processing, open a square groove on the bottom plate to prevent the grinding wheel from interfering with the workpiece;

[0032] S21: Grinding arc grooves: Processing arc grooves, adjusting the angle of the grinding wheel to be parallel to the workpiece, feeding and grinding left and right, trimming the diameter of the grinding wheel to the same as the diameter of the arc, feeding and grinding left and right, completing the processing of the arc surface;

[0033] S22: Grinding of large outer circle: Use special tooling and centerless grinding to grind the large outer circle;

[0034] S23: Tempering;

[0035] S24: Lapping groove: Use finer abrasives to grind the inner wall of the raceway.

[0036] In order to prevent burrs from being generated at the connection between the flange end face and the small outer circle during grinding, under normal circumstances, the flange bearing needs to be processed with a square shoulder, as shown in the figure. However, since this type of bearing has a U-shaped groove and an arc-shaped groove, when processing the shoulder, the flange strength will be too low and deformed or even broken. Therefore, in order to increase the strength of the bearing, the square shoulder is designed as an arc-shaped shoulder to avoid fracture at the connection between the flange end face and the small outer circle. However, because the current structure is an arc-shaped shoulder, burrs will be generated if the rough grinding of the small outer circle and the base surface is divided into two processes. Therefore, improvements are made. After the improvement, a molded grinding wheel is used, and the grinding wheel chamfer has the same radius as the arc-shaped shoulder fillet. Therefore, the small outer circle and the base surface can be ground simultaneously, and the grinding accuracy can be guaranteed. Therefore, by improving the bearing design and improving the processing flow, the two effects of enhancing the bearing strength and ensuring the processing accuracy can be achieved at the same time.

[0037] In a preferred solution, the raceway diameter measuring mechanism comprises two measuring claws, and the top ends of the two measuring claws are respectively provided with arc ends, and each of the arc ends is movably connected to a sphere;

[0038] The highest point of the arc end is located inside the small outer circle, and the ball fits movably in the raceway.

[0039] Since the bearing raceway is close to the bottom surface of the bearing, conventional measurement methods cannot achieve measurement. Therefore, the measuring tooling is improved. When measuring with the measuring claws before the improvement, the measuring claws need to protrude from the bearing end face when the probe contacts the raceway. However, this bearing is a semi-closed type and the measuring claws cannot protrude from the bearing end face. Therefore, measurement cannot be achieved. After the improvement, an arc end head is added. The arc end head is arc-shaped and the highest point is lower than the sphere. This can effectively avoid the problem of interference between the probe end face and the bearing bottom surface, and achieve measurement of the raceway.

[0040] In a preferred embodiment, the auxiliary tooling includes a base, and the inner wall of the top end of the base is provided with a thread groove, a plurality of screw holes and an inner hole, the inner hole is located at the center of the thread groove, and the plurality of screw holes are located between the thread groove and the inner hole;

[0041] An external thread extension plate is meshed in the thread groove, and a cover plate is fixedly connected to the top of the external thread extension plate, and a plurality of screw holes are simultaneously penetrated and arranged on the cover plate;

[0042] A slot is provided on one side of the cover plate, a central cylinder is fixedly connected to the bottom end of the cover plate, and the central cylinder is located in the inner hole, and each of the screw holes is respectively engaged with a fixing screw;

[0043] The S19 includes the following specific steps:

[0044] S191: First, install the ferrule in the inner hole of the base, and the diameter of the inner hole matches the diameter of the small outer circle 1 of the ferrule;

[0045] S192: Install the cover plate in the bearing hole, and the diameter of the center cylinder matches the inner hole of the ring;

[0046] S193: Install the three set screws in the threaded holes.

[0047] In order to grind U-shaped grooves and arc-shaped grooves, special tooling is required. The first step is to install the ring in the inner hole of the base. The diameter of the inner hole is adapted to the diameter of the small outer circle of the ring. The second step is to install the cover plate in the bearing hole. The diameter of the center cylinder is adapted to the inner hole of the ring. The base is provided with a threaded groove, and the external thread extension plate is provided with an external thread. The cover plate and the base are fixed to each other by rotating the thread, and the bearing end face is fixed at the same time. The third step is to install three fixing screws in the threaded holes to prevent the cover plate and the base from loosening during processing. The cover plate is provided with a groove to avoid interference when processing the arc-shaped groove of the ring. The base is an equilateral triangle, which cooperates with the fixed claws of the machine tool to effectively prevent the workpiece and tooling from rotating during grinding.

[0048] The special tooling includes a limiting ring sleeve, the inner diameter of the limiting ring sleeve is the same as the small outer circle, the outer diameter is the same as the large outer circle, and the width is the same as the width of the small outer circle. The inner wall of the limiting ring sleeve interference clamps the special-shaped bearing ring.

[0049] As can be seen from the above, a processing and manufacturing method of a special-shaped bearing ring with a flange includes a special-shaped bearing ring, a raceway diameter measuring mechanism and an auxiliary tooling, wherein the special-shaped bearing ring includes a small outer circle, and one side of the small outer circle is connected to a flange end face, the outer wall of the flange end face is provided with a large outer circle, the connection between the flange end face and the small outer circle is provided with an arc-shaped shoulder, the bottom of the flange end face is provided with an arc-shaped groove and a U-shaped groove, and the arc-shaped groove extends to the small outer circle, and the inner wall of the small outer circle is surrounded by a raceway; the following specific steps are included: S1: turning Cutting: Turning the general shape of the bearing; S2: Soft grinding of double end faces: Grinding the double end faces with soft abrasives; S3: Soft grinding of outer circle: Grinding the outer circle with soft abrasives; S4: Turning large holes; S5: Turning inner and outer corners; S6: Turning small outer circle and base surface; S7: Turning small outer round corners; S8: Turning arc blade shoulder: Turning arc-shaped blade shoulder; S9: Heat treatment; S10: Grinding the two end faces; S11: Rough grinding of large outer circle; S12: Rough grinding of small outer circle and base surface; S13: Fine grinding of small outer circle and base surface; S14: Grinding holes; S15: Rough grinding of grooves: Using coarse abrasives Grind the inner wall of the raceway; S16: Fine grinding groove: Grind the inner wall of the raceway with fine abrasive; S17: Fine grinding groove: Grind the inner wall of the raceway with finer abrasive; S18: Grind the small outer circle and base surface: Use the profiled grinding wheel to grind the small outer circle and base surface at the same time, and the grinding wheel chamfer has the same radius as the arc-shaped shoulder fillet; S19: Place the auxiliary tooling: Place the ring on the auxiliary tooling; S20: Grind the U-shaped groove: Process the U-shaped groove, adjust the angle of the grinding wheel to be perpendicular to the workpiece, and trim the diameter of the grinding wheel to the same diameter as the U-shaped groove, left Right feed grinding, complete the processing of the U-shaped groove. During processing, a square groove is opened on the bottom plate to prevent the grinding wheel from interfering with the workpiece; S21: Grinding arc groove: Processing the arc groove, the angle of the grinding wheel is adjusted to be parallel to the workpiece, left and right feed grinding, the diameter of the grinding wheel is trimmed to the same as the diameter of the arc, left and right feed grinding, and the processing of the arc surface is completed; S22: Grinding the large outer circle: using special tooling, and grinding the large outer circle by centerless grinding; S23: Tempering; S24: Lapping the groove: grinding the inner wall of the raceway with finer abrasives. The processing and manufacturing method of the flanged special-shaped bearing ring provided by the present invention has the technical effects of improving the bearing design and improving the processing flow, and can simultaneously achieve the two effects of enhancing the bearing strength and ensuring the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A schematic diagram of the side shoulder of an original special-shaped bearing ring in a method for processing and manufacturing a special-shaped bearing ring with a flange proposed by the present invention.

[0051] Figure 2 The present invention provides a schematic diagram of the structure of a special-shaped bearing ring according to a method for processing and manufacturing a special-shaped bearing ring with a flange.

[0052] Figure 3 A schematic diagram of the side shoulder of a special-shaped bearing ring according to a method for processing and manufacturing a special-shaped bearing ring with a flange proposed by the present invention.

[0053] Figure 4 The present invention provides a specific flow chart of a method for processing and manufacturing a special-shaped bearing ring with a flange.

[0054] Figure 5 The present invention provides a schematic structural diagram of an original raceway diameter measuring mechanism for a method for processing and manufacturing a special-shaped bearing ring with a flange.

[0055] Figure 6 The present invention provides a schematic structural diagram of a raceway diameter measuring mechanism for a method for processing and manufacturing a special-shaped bearing ring with a flange.

[0056] Figure 7 The present invention is a schematic diagram of an auxiliary tooling structure for a method for processing and manufacturing a special-shaped bearing ring with a flange.

[0057] Figure 8 The present invention provides a schematic diagram of the disassembly of auxiliary tooling for a method for processing and manufacturing a special-shaped bearing ring with a flange.

[0058] Fig. 9 This is a schematic diagram of the special tooling disassembly of a method for processing and manufacturing a special-shaped bearing ring with a flange proposed by the present invention.

[0059] Fig.10 This is a schematic diagram of the polishing structure after installation of a special tooling in a processing and manufacturing method of a special-shaped bearing ring with a flange proposed by the present invention.

[0060] In the figure: 1. small outer circle; 2. flange end face; 3. arc groove; 4. U-shaped groove; 5. arc shoulder; 6. raceway; 7. measuring claw; 8. sphere; 9. arc end; 10. fixing screw; 11. cover plate; 12. slot; 13. base; 14. external thread extension plate; 15. thread groove; 16. inner hole; 17. screw hole; 18. center cylinder; 19. limiting ring. DETAILED DESCRIPTION

[0061] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0062] The present invention discloses a method for processing and manufacturing a special-shaped bearing ring with a flange, which is mainly applied to the scene of processing special-shaped bearing rings.

[0063] Reference Figure 1-Figure 4 A processing and manufacturing method of a special-shaped bearing ring with a flange, comprising a special-shaped bearing ring, a raceway diameter measuring mechanism and an auxiliary tooling, wherein the special-shaped bearing ring comprises a small outer circle 1, and a flange end face 2 is connected to one side of the small outer circle 1, a large outer circle is arranged on the outer wall of the flange end face 2, an arc-shaped shoulder 5 is arranged at the connection between the flange end face 2 and the small outer circle 1, an arc-shaped groove 3 and a U-shaped groove 4 are arranged at the bottom of the flange end face 2, and the arc-shaped groove 3 extends to the small outer circle 1, and a raceway 6 is arranged around the inner wall of the small outer circle 1;

[0064] The specific steps include:

[0065] S1: Turning: Turning the general shape of the bearing;

[0066] S2: Soft grinding of double end faces: grinding of double end faces with soft abrasives;

[0067] S3: Soft grinding of outer circle: use soft abrasive to grind the outer circle;

[0068] S4: Turning large holes;

[0069] S5: inside and outside corners of the car;

[0070] S6: Turning small outer circle and base surface;

[0071] S7: Turning small outer corners;

[0072] S8: Turning arc-shaped cutting edge shoulder: Turning an arc-shaped cutting edge shoulder 5;

[0073] S9: heat treatment;

[0074] S10: grinding both end surfaces;

[0075] S11: Rough grinding of large outer circle;

[0076] S12: Rough grinding of small outer circle and base surface;

[0077] S13: Fine grinding of small outer circle and base surface;

[0078] S14: grinding hole;

[0079] S15: Rough grinding groove: grinding the inner wall of the raceway 6 with a coarse abrasive;

[0080] S16: Fine grinding groove: grinding the inner wall of the raceway 6 with fine abrasive;

[0081] S17: Fine grinding groove: grinding the inner wall of the raceway 6 with finer abrasive;

[0082] S18: Grinding the small outer circle and base surface: Use a profiled grinding wheel to grind the small outer circle 1 and the base surface simultaneously, and the chamfer of the grinding wheel has the same radius as the fillet of the arc-shaped cutting shoulder 5;

[0083] S19: Place the auxiliary tooling: place the ferrule on the auxiliary tooling;

[0084] S20: Grinding U-shaped groove: Processing the U-shaped groove 4, adjusting the angle of the grinding wheel to be perpendicular to the workpiece, trimming the diameter of the grinding wheel to be the same as the diameter of the U-shaped groove 4, feeding and grinding left and right, completing the processing of the U-shaped groove, during processing, opening a square groove on the bottom plate to prevent the grinding wheel from interfering with the workpiece;

[0085] S21: Grinding arc groove: Processing the arc groove 3, adjusting the angle of the grinding wheel to be parallel to the workpiece, feeding and grinding left and right, trimming the diameter of the grinding wheel to be the same as the diameter of the arc, feeding and grinding left and right, completing the processing of the arc surface;

[0086] S22: Grinding of large outer circle: Use special tooling and centerless grinding to grind the large outer circle;

[0087] S23: Tempering;

[0088] S24: Lapping groove: Use finer abrasive to grind the inner wall of raceway 6. In order to prevent burrs from forming at the connection between flange end face 2 and small outer circle 1 during grinding, flange bearings are normally required to be machined with a square shoulder, such as Figure 1 As shown, since this bearing has a U-shaped groove 4 and an arc groove 3, when the shoulder is processed, the flange strength will be too low and deformed or even broken. Therefore, in order to increase the strength of the bearing, the square shoulder is designed as an arc shoulder 5, which can avoid fracture at the connection between the flange end face 2 and the small outer circle 1. However, because the current structure is an arc shoulder 5, if the rough grinding of the small outer circle and the base surface is divided into two processes, burrs will be generated. Therefore, improvements are made. After the improvement, a molded grinding wheel is used, and the grinding wheel chamfer has the same radius as the arc shoulder 5. Therefore, the small outer circle and the base surface can be ground at the same time, and the grinding accuracy can be guaranteed. Therefore, by improving the bearing design and improving the processing flow, the two effects of enhancing the bearing strength and ensuring the processing accuracy can be achieved at the same time.

[0089] Reference Figure 6 In a preferred embodiment, the raceway diameter measuring mechanism includes two measuring claws 7, and the top ends of the two measuring claws 7 are respectively provided with arc ends 9, and each arc end 9 is movably connected to a ball 8.

[0090] Reference Figure 6 In a preferred embodiment, the highest point of the arc end 9 is located inside the small outer circle 1, and the ball 8 is movably fitted in the raceway 6. Since the bearing raceway is close to the bottom surface of the bearing, conventional measurement methods cannot achieve measurement. Figure 5As shown, the measuring tool is improved. When measuring with the measuring claw 7 before the improvement, when the probe contacts the raceway 6, the measuring claw 7 needs to protrude from the bearing end face. However, this bearing is a semi-closed type, and the measuring claw 7 cannot protrude from the bearing end face. Therefore, measurement cannot be achieved. After the improvement, an arc end head 9 is added. The arc end head 9 is arc-shaped, and the highest point is lower than the sphere 8. The problem of interference between the probe end face and the bearing bottom surface can be effectively avoided, thereby achieving the measurement of the raceway 6.

[0091] Reference Figure 7 and Figure 8 In a preferred embodiment, the auxiliary tooling includes a base 13, and the inner wall of the top end of the base 13 is provided with a thread groove 15, a plurality of screw holes 17 and an inner hole 16, the inner hole 16 is located at the center of the thread groove 15, and the plurality of screw holes 17 are located between the thread groove 15 and the inner hole 16.

[0092] Reference Figure 7 and Figure 8 In a preferred embodiment, an external thread extension plate 14 is meshed in the thread groove 15 , and a top end of the external thread extension plate 14 is fixedly connected to a cover plate 11 , and a plurality of screw holes 17 are simultaneously provided through the cover plate 11 .

[0093] Reference Figure 7 and Figure 8 In a preferred embodiment, a slot 12 is provided on one side of the cover plate 11, a central cylinder 18 is fixedly connected to the bottom end of the cover plate 11, and the central cylinder 18 is located in the inner hole 16, and each screw hole 17 is respectively engaged with a fixing screw 10.

[0094] Reference Figure 7 and Figure 8 In a preferred embodiment, S19 includes the following specific steps:

[0095] S191: first install the ferrule in the inner hole 16 of the base 13, wherein the diameter of the inner hole 16 matches the diameter of the small outer circle 1 of the ferrule;

[0096] S192: Install the cover plate 11 in the bearing hole, and the diameter of the center cylinder 18 is adapted to the inner hole of the ferrule;

[0097] S193: Install three fixing screws 10 in the threaded holes 17. In order to grind the U-shaped groove 4 and the arc groove 3, special tooling is required. The first step is to install the ring in the inner hole 16 of the base 13. The diameter of the inner hole 16 is adapted to the diameter of the small outer circle 1 of the ring. The outer diameter is the same as the large outer circle, and the width is the same as the width of the small outer circle 1. The second step is to install the cover plate 11 in the bearing hole. The diameter of the central cylinder 18 is adapted to the inner hole of the ring. The base is provided with a threaded groove 15, and the external thread extension plate 14 is provided with an external thread. , the cover plate 11 and the base 13 are fixed to each other by rotating the thread, and at the same time, the bearing end face is fixed. In the third step, three fixing screws 10 are installed in the threaded holes 17 to prevent the cover plate 11 and the base 13 from loosening during the processing. The cover plate 11 is provided with a groove to avoid interference when processing the arc groove 3 of the ferrule. The base 13 is an equilateral triangle, which cooperates with the fixed claws of the machine tool, and can effectively prevent the workpiece and the tooling from rotating and colliding during the grinding process.

[0098] Reference Fig. 9 and Fig.10 In a preferred embodiment, the special tooling includes a limiting ring sleeve 19, the inner diameter of the limiting ring sleeve 19 is the same as the small outer circle 1, the outer diameter is the same as the large outer circle, and the width is the same as the width of the small outer circle 1. The inner wall of the limiting ring sleeve 19 is interference clamped on the special-shaped bearing ring, and there is an arc surface and a U-shaped groove 4 on the large outer circle, so the outer circle is incomplete. In the conventional grinding method, the grinding wheel and the guide wheel have an extrusion force on the outer ring, and the edge of the groove will directly collide with the grinding wheel, causing scrapping. Therefore, a special tooling is required on the small outer circle 1. The inner diameter of the tooling is the same as the small outer circle 1, and the outer diameter is the same as the small outer circle 1. The large outer circle is the same, and the width is the same as the small outer circle 1 width. The cutting force during grinding can be evenly distributed on the outer circle of the flange and the outer circle surface of the tooling, and no collision will occur. The outer diameter of the auxiliary tooling is the same as the outer diameter of the flange before grinding, and the inner hole diameter of the tooling and the small outer circle outer diameter of the ring are graded and transitionally matched to prevent the ring and the tooling from sliding against each other. By using the above-mentioned improved process and tooling processing, the raceway roundness of the special-shaped flange ring can be guaranteed to be within 0.8μm, the roughness within 0.032μm, and the cylindricity of the outer circle within 1.5μm.

[0099] Working principle: In order to prevent burrs from forming at the connection between the flange end face 2 and the small outer circle 1 during grinding, the flange bearing normally needs to be machined with a square blade shoulder, such as Figure 1As shown, since this bearing has a U-shaped groove 4 and an arc groove 3, when machining the blade shoulder, the flange strength will be too low and deformed or even broken. Therefore, in order to increase the strength of the bearing, the square blade shoulder is designed as an arc blade shoulder 5, which can avoid fracture at the connection between the flange end face 2 and the small outer circle 1. However, because the current structure is an arc blade shoulder 5, if the rough grinding of the small outer circle and the base surface is divided into two processes, burrs will be generated. Therefore, an improvement is made. After the improvement, a molded grinding wheel is used, and the grinding wheel chamfer has the same radius as the arc blade shoulder 5. Therefore, the small outer circle and the base surface can be ground at the same time, and the grinding accuracy can be guaranteed. Therefore, by improving the bearing design and improving the processing flow, it is possible to simultaneously To achieve the two effects of enhancing the bearing strength and ensuring the processing accuracy, in order to realize the grinding of the U-shaped groove 4 and the arc groove 3, special tooling is required. The first step is to install the ring in the inner hole 16 of the base 13. The diameter of the inner hole 16 is adapted to the diameter of the small outer circle 1 of the ring. The second step is to install the cover plate 11 in the bearing hole. The diameter of the center cylinder 18 is adapted to the inner hole of the ring. The base is provided with a threaded groove 15, and the external thread extension plate 14 is provided with an external thread. The cover plate 11 and the base 13 are fixed to each other by rotating the thread, and at the same time, the bearing end face is fixed. The third step is to install three fixing screws 10 in the threaded hole 17 to prevent the cover plate 11 and the base 1 from being fixed during the processing. 3 is loose, wherein the cover plate 11 is provided with a groove to avoid interference when machining the arc groove 3 of the ferrule, wherein the base 13 is an equilateral triangle, and its function is to cooperate with the fixed claw of the machine tool, and can effectively prevent the workpiece and the tooling from rotating during grinding. Since the arc groove 3 and the U-shaped groove 4 require a 90° angle, a mechanism needs to be designed to ensure the angle. After the cover plate 11 is grooved, a locating pin hole is punched at the 90° position. The diameters of the locating pin hole and the locating pin are the same as those of the U-shaped groove 4. After the U-shaped groove 4 is machined, the position of the U-shaped groove 4 is aligned with the locating pin hole. After the cover plate 11 contacts the outer ring, the cover plate 11 can be connected in series with the outer ring by installing the locating pin, and the outer ring can also be connected in series. The position is fixed, and after fixation, the position to be processed is 90° with the U-shaped groove 4. The arc surface and U-shaped groove 4 processed in this way have a roughness of up to 0.25μm and a curvature tolerance of up to 0.02mm. If the arc surface and U-shaped groove 4 are turned directly during lathe processing, their accuracy cannot reach the accuracy of grinding processing, and are only the accuracy and tolerance of turning. At the same time, if the groove is turned first, due to the low structural strength, it is not only very easy to deform during heat treatment, but also very difficult to position during grinding, resulting in the problem of being unable to process. After the groove processing is completed, there will be grinding flash on the edge of the groove, and the flange will produce grinding deformation, so it is necessary to re-grind the small outer circle and the large outer circle, and the small outer circle is ground with a forming grinding wheel.

[0100] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for processing and manufacturing a special-shaped bearing ring with a flange, comprising a special-shaped bearing ring, a raceway diameter measuring mechanism and an auxiliary tooling, characterized in that: The special-shaped bearing ring comprises a small outer circle (1), and one side of the small outer circle (1) is connected to a flange end face (2), the outer wall of the flange end face (2) is provided with a large outer circle, the connection between the flange end face (2) and the small outer circle (1) is provided with an arc-shaped shoulder (5), the bottom of the flange end face (2) is provided with an arc-shaped groove (3) and a U-shaped groove (4), and the arc-shaped groove (3) extends to the small outer circle (1), and the inner wall of the small outer circle (1) is surrounded by a raceway (6); The specific steps include: S1: Turning: Turning the general shape of the bearing; S2: Soft grinding of double end faces: grinding of double end faces with soft abrasives; S3: Soft grinding of outer circle: use soft abrasive to grind the outer circle; S4: Turning large holes; S5: inside and outside corners of the car; S6: Turning small outer circle and base surface; S7: Turning small outer corners; S8: Turning a circular blade shoulder: Turning a circular blade shoulder (5); S9: heat treatment; S10: grinding both end surfaces; S11: Rough grinding of large outer circle; S12: Rough grinding of small outer circle and base surface; S13: Fine grinding of small outer circle and base surface; S14: grinding hole; S15: coarse grinding: grinding the inner wall of the raceway (6) with coarse abrasive; S16: Fine grinding: grinding the inner wall of the raceway (6) with fine abrasive; S17: Fine grinding of grooves: grinding the inner wall of the raceway (6) with finer abrasives; S18: Grinding the small outer circle and the base surface: using a profiled grinding wheel to grind the small outer circle (1) and the base surface simultaneously, the grinding wheel chamfer has the same radius as the arc-shaped cutting shoulder (5); S19: Place the auxiliary tooling: place the ferrule on the auxiliary tooling; S20: Grinding the U-shaped groove: The U-shaped groove (4) is processed, the angle of the grinding wheel is adjusted to be perpendicular to the workpiece, the diameter of the grinding wheel is trimmed to be the same as the diameter of the U-shaped groove (4), and the grinding is fed left and right to complete the processing of the U-shaped groove. During the processing, a square groove is opened on the bottom plate to prevent the grinding wheel from interfering with the workpiece; S21: Grinding arc groove: Grinding the arc groove (3), adjusting the angle of the grinding wheel to be parallel to the workpiece, feeding and grinding left and right, trimming the diameter of the grinding wheel to be the same as the diameter of the arc, feeding and grinding left and right, completing the processing of the arc surface; S22: Grinding of large outer circle: Use special tooling and centerless grinding to grind the large outer circle; S23: Tempering; S24: Lapping groove: grinding the inner wall of the raceway (6) with finer abrasive.

2. The method for processing and manufacturing a special-shaped bearing ring with a flange according to claim 1, characterized in that: The raceway diameter measuring mechanism comprises two measuring claws (7), and the top ends of the two measuring claws (7) are respectively provided with arc ends (9), and each of the arc ends (9) is movably connected to a sphere (8).

3. The method for processing and manufacturing a special-shaped bearing ring with a flange according to claim 2, characterized in that: The highest point of the arc end (9) is located inside the small outer circle (1), and the ball (8) is movably fitted inside the raceway (6).

4. The method for processing and manufacturing a special-shaped bearing ring with a flange according to claim 1, characterized in that: The auxiliary tooling comprises a base (13), and the inner wall at the top end of the base (13) is provided with a thread groove (15), a plurality of screw holes (17) and an inner hole (16), wherein the inner hole (16) is located at the center of the thread groove (15), and the plurality of screw holes (17) are located between the thread groove (15) and the inner hole (16).

5. The method for processing and manufacturing a special-shaped bearing ring with a flange according to claim 4, characterized in that: An external thread extension plate (14) is meshed in the thread groove (15), and the top end of the external thread extension plate (14) is fixedly connected to a cover plate (11), and a plurality of screw holes (17) are simultaneously provided through the cover plate (11).

6. The method for processing and manufacturing a special-shaped bearing ring with a flange according to claim 5, characterized in that: A slot (12) is provided on one side of the cover plate (11), and a central cylinder (18) is fixedly connected to the bottom end of the cover plate (11), and the central cylinder (18) is located in the inner hole (16), and a fixing screw (10) is respectively engaged in each of the screw holes (17).

7. The method for processing and manufacturing a flanged special-shaped bearing ring according to claim 6, characterized in that: The S19 includes the following specific steps: S191: First, install the ferrule in the inner hole (16) of the base (13), wherein the diameter of the inner hole (16) matches the diameter of the small outer circle (1) of the ferrule; S192: Install the cover plate (11) in the bearing hole, and the diameter of the center cylinder (18) is adapted to the inner hole of the ferrule; S193: Install the three fixing screws (10) into the threaded holes (17).

8. The method for processing and manufacturing a flanged special-shaped bearing ring according to claim 1, characterized in that: The special tooling comprises a limiting ring sleeve (19), the inner diameter of the limiting ring sleeve (19) is the same as the small outer circle (1), the outer diameter is the same as the large outer circle, and the width is the same as the width of the small outer circle (1); the inner wall of the limiting ring sleeve (19) is interference clamped on the special-shaped bearing ring.

Images