A machining clamping device for thin-wall bearing ring

Abstract

The utility model discloses a kind of for thin-wall bearing sleeve ring machining clamping device, it is related to clamping device technical field.The utility model includes circular workbench and the base of fixed connection in the bottom of circular workbench, the top of circular workbench is provided with thin-wall bearing sleeve ring, further include: centering part, the centering part is set in the top of circular workbench;Clamping part, the clamping part is installed on circular workbench;The centering part includes centering component, and the centering component is set on circular workbench;And stabilizing component, the stabilizing component is set on centering component.The utility model is set to centering part, solved the clamping device in the use process of existing, inconvenient to its centering clamping, make sleeve ring machining axis and machine tool spindle axis offset, lead to inner and outer circle coaxiality out of tolerance, raceway position precision unqualified, bearing rotation precision is reduced after assembly, the problem of vibration and noise generation.

Description

Technical Field

[0001] This utility model belongs to the technical field of clamping devices, and in particular relates to a clamping device for machining thin-walled bearing rings. Background Technology

[0002] Thin-walled bearing rings are key components of thin-walled bearings. Their main characteristic is their thin wall thickness. These rings are generally used as inner or outer rings of bearings to support rotating shafts or fix mechanical parts. They are widely used in aerospace, precision instruments, high-end equipment and other fields. During processing, high requirements are placed on dimensional accuracy and surface roughness. Special clamping devices are needed to avoid deformation in order to ensure processing quality.

[0003] However, the existing clamping device is not convenient for centering and clamping during use, causing the axis to deviate from the machine tool spindle axis during ring processing. This results in excessive coaxiality of the inner and outer circles, unqualified raceway position accuracy, decreased bearing rotation accuracy after assembly, and the generation of vibration and noise. Utility Model Content

[0004] The purpose of this utility model is to provide a clamping device for machining thin-walled bearing rings. By setting a centering part, it solves the problems of existing clamping devices, which are not convenient for centering during use, causing the axis of the ring to deviate from the axis of the machine tool spindle during machining, resulting in excessive coaxiality of the inner and outer circles, unqualified raceway position accuracy, reduced bearing rotation accuracy after assembly, and vibration and noise.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a clamping device for machining thin-walled bearing rings, comprising a circular worktable and a base fixedly connected to the bottom of the circular worktable. The thin-walled bearing ring is disposed above the circular worktable. The device further includes: a centering part disposed above the circular worktable; a clamping part mounted on the circular worktable; the centering part comprising a centering assembly disposed on the circular worktable; and a stabilizing assembly disposed on the centering assembly; the centering assembly comprising a plurality of clamping plates disposed above the circular worktable, each clamping plate having a support frame on its opposite side; each support frame having a rotating shaft rotatably connected to its inner wall; and each rotating shaft having a positioning element. The bottom of the base has an installation groove, and the rotating shafts convert the sliding friction of the positioning elements into rolling friction, thereby greatly reducing the friction between the positioning elements and the thin-walled bearing ring during positioning.

[0007] Furthermore, the clamping part includes a driving assembly disposed on a circular worktable; and a connecting assembly mounted on the driving assembly; wherein the connecting assembly is connected to the centering assembly.

[0008] Furthermore, the stabilizing component includes several guide grooves formed on a circular worktable, and the bottom of several clamping plates is fixedly connected to a sliding rod. The bottom of several sliding rods passes through several guide grooves, and the sliding rods are slidably connected to several guide grooves. A buffer is provided above the circular worktable. The guide grooves and sliding rods are used to guide the clamping plates, and the guide grooves and sliding rods are distributed in a circumferential array on the circular worktable.

[0009] Furthermore, the drive assembly includes a motor fixed to the bottom of the circular worktable. The output shaft of the motor is fixedly connected to a threaded rod via a coupling. The top of the threaded rod passes through the circular worktable, and the threaded rod is rotatably connected to the circular worktable. A hollow rod is fixedly connected to the top of the circular worktable, and the top of the threaded rod passes through the hollow rod. A movable ring is threaded onto the outer wall of the threaded rod. The movable ring is located above the hollow rod, and the motor is located in a mounting groove at the top of the base to provide power output to the device.

[0010] Furthermore, the connecting assembly includes several connecting rods 1 hinged to the outer wall of the moving ring, with the side of each connecting rod 1 away from the moving ring respectively hinged to several clamping plates. Several connecting rods 2 are hinged to the outer wall of the hollow rod, with the side of each connecting rod 2 away from the connecting rod 1 respectively hinged to several clamping plates. The connecting rods 1 and 2 are arranged in a circumferential array above the circular worktable, used to convert the up-and-down movement of the moving ring into a movement that moves closer to or further away from each other.

[0011] Furthermore, the positioning element includes circular rollers fixedly connected to the outer walls of several rotating shafts, and each of the circular rollers is in contact with the inner wall of the thin-walled bearing ring; wherein, the outer wall of the circular roller is provided with an anti-slip groove, which is used to prevent the thin-walled bearing ring from slipping.

[0012] Furthermore, the buffer includes two dampers fixedly connected between several clamping plates and several support frames, and springs are sleeved on the outer walls of several of the clamping plates. The side of several springs near the hollow rod is fixedly connected to several clamping plates, and the side of several springs away from the hollow rod is fixedly connected to several support frames. Each clamping plate and slide rod is connected to two dampers and springs. The springs and dampers are used to buffer the clamping force and prevent excessive clamping force from causing deformation of the collar.

[0013] This utility model has the following beneficial effects:

[0014] 1. By setting a centering part, several rollers are used to make the thin-walled bearing ring self-center by moving away from each other. The sliding friction is converted into rolling friction by the rotatable rollers, which effectively reduces the centering friction and reduces the wear of the ring. At the same time, the damper and spring buffer the clamping force to avoid excessive clamping force causing ring deformation, ensuring the rotation accuracy of the bearing after assembly, reducing vibration and noise, and improving the processing quality and bearing performance.

[0015] 2. By setting up a clamping part, starting the motor drives the threaded rod to rotate, causing the moving ring to move under the restriction of the guide groove and the slide bar. The connecting rod drives the clamping plate and the round roller to tighten the thin-walled bearing ring, which can achieve rapid clamping. The operation is simple and efficient. By using multiple round rollers to apply force evenly in the circumference, local pressure can be reduced, and deformation of the thin-walled bearing ring due to uneven force can be avoided. At the same time, the restriction of the guide groove and the slide bar ensures the stability and accuracy of the clamping action, which is conducive to improving the processing quality.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial cross-sectional view of the base of this utility model;

[0020] Figure 3 This is a partial cross-sectional view of the clamping part of this utility model;

[0021] Figure 4 This utility model Figure 2 A magnified structural diagram of A in the middle;

[0022] Figure 5 This utility model Figure 3 A magnified structural diagram of B in the diagram.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 111. Circular worktable; 112. Base; 113. Thin-walled bearing ring; 2. Centering part; 21. Centering assembly; 211. Clamping plate; 212. Support frame; 213. Rotating shaft; 214. Circular roller; 22. Stabilizing assembly; 221. Guide groove; 222. Slide rod; 223. Damper; 224. Spring; 3. Clamping part; 31. Drive assembly; 311. Motor; 312. Threaded rod; 313. Hollow rod; 314. Moving ring; 32. Connecting assembly; 321. Connecting rod one; 322. Connecting rod two. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 As shown, this utility model is a clamping device for processing thin-walled bearing rings, including a circular worktable 111 and a base 112 fixedly connected to the bottom of the circular worktable 111. A thin-walled bearing ring 113 is arranged above the circular worktable 111. It also includes: a centering part 2, which is arranged above the circular worktable 111; and a clamping part 3, which is installed on the circular worktable 111.

[0027] The centering part 2 includes a centering assembly 21, which is mounted on a circular worktable 111; and a stabilizing assembly 22, which is mounted on the centering assembly 21. The centering assembly 21 includes several clamping plates 211 mounted above the circular worktable 111. Each clamping plate 211 has a support frame 212 on its opposite side. Each support frame 212 has a rotating shaft 213 rotatably connected to its inner wall. Each rotating shaft 213 has a positioning element. The bottom of the base 112 has a mounting groove for stabilization. Component 22 includes several guide grooves 221 formed on a circular worktable 111. Each of the bottoms of several clamping plates 211 is fixedly connected to a sliding rod 222. The bottoms of the sliding rods 222 pass through the guide grooves 221, and the sliding rods 222 are slidably connected to the guide grooves 221. A buffer is provided above the circular worktable 111. The guide grooves 221 and sliding rods 222 are used to guide the clamping plates 211. The positioning components include circular rollers 214 fixedly connected to the outer walls of several rotating shafts 213. Several circular rollers 214 are in contact with the inner wall of the thin-walled bearing ring 113; the outer wall of the circular rollers 214 is provided with anti-slip grooves, and the buffer includes two dampers 223 respectively fixedly connected between several clamping plates 211 and several support frames 212. Springs 224 are fitted on the outer walls of several rollers 214. The side of several springs 224 near the hollow rod 313 is fixedly connected to several clamping plates 211, and the side of several springs 224 away from the hollow rod 313 is fixedly connected to several support frames 212; wherein each clamping plate... 211 and slide bar 222 are connected to two dampers 223 and spring 224. By setting centering part 2, several rollers 214 are moved away from each other to make the thin-walled bearing ring 113 self-center. The rotatable rollers 214 convert sliding friction into rolling friction, effectively reducing centering friction and reducing wear on the ring. At the same time, dampers 223 and spring 224 buffer the clamping force to avoid excessive clamping force causing ring deformation, ensuring the bearing rotation accuracy after assembly, reducing vibration and noise, and improving processing quality and bearing performance.

[0028] The clamping part 3 includes a drive assembly 31, which is mounted on a circular worktable 111; and a connecting assembly 32, which is mounted on the drive assembly 31. The connecting assembly 32 is connected to a centering assembly 21. The drive assembly 31 includes a motor 311 fixed to the bottom of the circular worktable 111. The output shaft of the motor 311 is fixedly connected to a threaded rod 312 via a coupling. The top of the threaded rod 312 passes through the circular worktable 111, and the threaded rod 312 is rotatably connected to the circular worktable 111. A hollow rod 313 is fixedly connected to the top of the circular worktable 111, and the top of the threaded rod 312 passes through the hollow rod 313. A movable ring 314 is threaded onto the outer wall of the threaded rod 312. The movable ring 314 is located above the hollow rod 313, and the motor 311 is located in a mounting groove at the top of the base 112. The connecting assembly 32 includes several connecting rods 321 hinged to the outer wall of the movable ring 314. The side of the hollow rod 313 away from the moving ring 314 is hinged to several clamping plates 211. Several connecting rods 322 are hinged to the outer wall of the hollow rod 313. The side of each connecting rod 322 away from the first connecting rod 321 is hinged to several clamping plates 211. The first connecting rod 321 and the second connecting rod 322 are arranged in a circumferential array above the circular worktable 111. By setting the clamping part 3, the motor 311 is started to drive the threaded rod 312 to rotate, so that the moving ring 314 can rotate. Ring 314 moves under the constraint of guide groove 221 and slide bar 222. The thin-walled bearing ring 113 is tightened by connecting rod 321, which drives clamping plate 211 and roller 214. This enables quick clamping, which is simple and efficient to operate. The use of multiple rollers 214 to apply force evenly in the circumference can reduce local pressure and prevent deformation of thin-walled bearing ring 113 due to uneven force. At the same time, the constraint of guide groove 221 and slide bar 222 ensures the stability and accuracy of clamping action, which is conducive to improving processing quality.

[0029] A specific application of this embodiment is as follows: In use, the thin-walled bearing ring 113 to be clamped is first placed above the circular worktable 111, and positioned outside the several rollers 214. When clamping the thin-walled bearing ring 113 is required, the motor 311 can be started to drive the threaded rod 312 to rotate. During this process, the moving ring 314 will move downward under the restriction of the guide groove 221 and the slide rod 222, and through the connection of the connecting rod 1 321 and the connecting rod 2 322, it will drive the several clamping plates 211 to move away from each other until the several rollers 214 are clamped. 4. Tighten the thin-walled bearing ring 113 to complete the clamping of the thin-walled bearing ring 113. During the clamping process, the thin-walled bearing ring 113 will complete self-centering as the several rollers 214 move away from each other. Due to the setting of the rotating shaft 213, the rollers 214 will rotate on the support frame 212. When the rollers 214 center the thin-walled bearing ring 113, the sliding between the rollers 214 and the thin-walled bearing ring 113 will be converted into rotation, thereby reducing the friction during centering. In addition, the damper 223 and the spring 224 will also buffer the clamping force during this process.

Claims

1. A clamping device for machining thin-walled bearing rings, comprising a circular worktable (111) and a base (112) fixedly connected to the bottom of the circular worktable (111), wherein a thin-walled bearing ring (113) is disposed above the circular worktable (111), characterized in that, Also includes: Centering part (2), the centering part (2) is disposed above the circular worktable (111); Clamping part (3), said clamping part (3) is mounted on a circular worktable (111); The centering part (2) includes a centering assembly (21), which is disposed on a circular worktable (111); and A stabilizing component (22) is disposed on a centering component (21); The centering component (21) includes a plurality of clamping plates (211) disposed above the circular worktable (111). Each of the plurality of clamping plates (211) is provided with a support frame (212) on the side away from each other. Each of the plurality of support frames (212) is rotatably connected to a rotating shaft (213). Each of the plurality of rotating shafts (213) is provided with a positioning component. The base (112) has an installation groove at its bottom.

2. The clamping device for machining thin-walled bearing rings according to claim 1, characterized in that, The clamping part (3) includes a drive assembly (31) disposed on a circular worktable (111); and A connection component (32) is mounted on a drive component (31); The connecting component (32) is connected to the centering component (21).

3. A clamping device for machining thin-walled bearing rings according to claim 2, characterized in that, The stabilizing component (22) includes several guide grooves (221) formed on the circular worktable (111), and the bottom of several clamping plates (211) are fixedly connected to sliding rods (222). The bottom of several sliding rods (222) passes through several guide grooves (221), and several sliding rods (222) are slidably connected to several guide grooves (221). A buffer is provided above the circular worktable (111). Among them, the guide groove (221) and the slide bar (222) are used to guide the clamping plate (211).

4. A clamping device for machining thin-walled bearing rings according to claim 3, characterized in that, The drive assembly (31) includes a motor (311) fixed to the bottom of a circular worktable (111). The output shaft of the motor (311) is fixedly connected to a threaded rod (312) via a coupling. The top of the threaded rod (312) passes through the circular worktable (111). The threaded rod (312) is rotatably connected to the circular worktable (111). A hollow rod (313) is fixedly connected to the top of the circular worktable (111). The top of the threaded rod (312) passes through the hollow rod (313). A movable ring (314) is threaded onto the outer wall of the threaded rod (312). Among them, the moving ring (314) is located above the hollow rod (313), and the motor (311) is located in the mounting groove at the top of the base (112).

5. A clamping device for machining thin-walled bearing rings according to claim 4, characterized in that, The connecting assembly (32) includes a plurality of connecting rods 1 (321) hinged on the outer wall of the moving ring (314), and the sides of the plurality of connecting rods 1 (321) away from the moving ring (314) are respectively hinged to a plurality of clamping plates (211). The outer wall of the hollow rod (313) is provided with a plurality of connecting rods 2 (322), and the sides of the plurality of connecting rods 2 (322) away from the connecting rods 1 (321) are respectively hinged to a plurality of clamping plates (211). Among them, connecting rod one (321) and connecting rod two (322) are arranged in a circular array above the circular worktable (111).

6. A clamping device for machining thin-walled bearing rings according to claim 5, characterized in that, The positioning element includes a circular roller (214) fixedly connected to the outer wall of a plurality of rotating shafts (213), and the plurality of the circular rollers (214) are in contact with the inner wall of the thin-walled bearing ring (113); The outer wall of the circular roller (214) is provided with anti-slip grooves.

7. A clamping device for machining thin-walled bearing rings according to claim 6, characterized in that, The buffer includes two dampers (223) that are fixedly connected between several clamping plates (211) and several support frames (212), and several outer walls are fitted with springs (224). The side of several springs (224) near the hollow rod (313) is fixedly connected to several clamping plates (211), and the side of several springs (224) away from the hollow rod (313) is fixedly connected to several support frames (212). Each clamp (211) and slide bar (222) is connected to two dampers (223) and springs (224).

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