Clamp for measuring bearing ring

Abstract

The utility model relates to the technical field of bearing ring clamps, in particular to a clamp for measuring a bearing ring, which comprises a support plate provided with a groove in the middle; the connecting base is arranged on the supporting plate in a sliding mode, an inner hole is formed in the connecting base, and inner tooth grooves are formed in the inner side wall of the groove and the inner side wall of the inner hole; the locking assembly comprises a handle which slidably penetrates through the groove and the inner hole and is coaxial with the groove and the inner hole, a gear meshed with the inner tooth groove is fixedly arranged in the middle of the handle, and the thickness of the gear is larger than the depth of the groove; the multiple clamping assemblies are arranged, and the multiple clamping assemblies are distributed on the supporting plate around the axis of the inner hole; the clamping assembly comprises a clamping block and a fixing plate which is driven by the connecting seat to approach to or be far away from the connecting seat, the clamping block is detachably arranged at one end, far away from the connecting seat, of the fixing plate, the clamping range of the clamp can be enlarged, and the measurement cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of bearing ring clamping technology, specifically to a clamping tool for measuring bearing rings. Background Technology

[0002] Bearings consist of an inner ring and an outer ring. The inner ring mates with the shaft and rotates with it; the outer ring mates with the bearing housing and provides support. The inner and outer rings are collectively referred to as bearing races. The roundness of the bearing races is a crucial structural parameter that affects the bearing's assembly accuracy, which in turn affects the load distribution under load, ultimately impacting the bearing's fatigue life. Therefore, inspecting the roundness of the bearing races is an essential step. Currently, most measurements utilize a three-jaw chuck to clamp the bearing races. However, in production, it has been found that the clamping range of a three-jaw chuck is limited; large-diameter bearing races may exceed the chuck's clamping range, necessitating the use of a dedicated chuck, which increases testing costs. Therefore, we propose a fixture for measuring bearing races. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a fixture for measuring bearing rings, which can improve the clamping range of the fixture and reduce the testing cost.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a fixture for measuring bearing rings, comprising...

[0005] The support plate has a groove in its middle section;

[0006] A connecting seat is slidably mounted on a support plate. The connecting seat has an inner hole, and both the groove and the inner sidewall of the inner hole have internal toothed grooves.

[0007] The locking assembly includes a handle that slides through a groove and an inner hole and is coaxial with both; a gear that meshes with the inner tooth groove is fixed in the middle of the handle; the thickness of the gear is greater than the depth of the groove; and

[0008] A clamping assembly is provided, wherein multiple clamping assemblies are distributed on a support plate around the axis of the inner hole; the clamping assembly includes a clamping block and a fixing plate driven by the connecting seat to approach or move away from the connecting seat, and the clamping block is detachably disposed at the end of the fixing plate away from the connecting seat.

[0009] Preferably, the locking assembly further includes a limiting member; a through hole is provided on the bottom wall of the groove; the lower end of the handle slides through the through hole and extends to the lower side of the support plate; the limiting member is fixedly disposed at the lower end of the handle; at least part of the outer diameter of the limiting member is greater than the inner diameter of the through hole; the distance between the limiting member and the support plate is greater than the depth of the groove.

[0010] Preferably, the limiting component includes a limiting bolt; the limiting bolt is threadedly connected to the handle.

[0011] Preferably, the clamping assembly further includes a slide rail and a slide block slidably disposed on the slide rail; the fixing plate is fixedly disposed on the slide rail; the slide rail is laid radially along the inner hole.

[0012] Preferably, the clamping assembly further includes a connecting plate, and the fixing plate is rotatably connected to the connecting seat through the connecting plate.

[0013] Preferably, the clamping block is made of rubber.

[0014] Preferably, the clamping block is provided with anti-slip grooves.

[0015] Preferably, the connector has a T-shaped structure.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting multiple fixed plates that slide radially driven by the connecting seat on the support plate, and clamping blocks on the fixed plates, the connecting seat can rotate, allowing the clamping blocks to approach or move away from the connecting seat to achieve the function of clamping or releasing. The adjustable position of the clamping blocks makes the clamping range of this fixture larger than that of the traditional three-jaw open plate, and can clamp larger bearing rings. In addition, a locking component with a locking function is provided between the support plate and the connecting seat, which can achieve the purpose of maintaining clamping and releasing, making the fixture more convenient to operate, improving measurement efficiency and reducing measurement costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the upper structure of the clamp of this utility model;

[0018] Figure 2 This is a schematic diagram of the support plate structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the axial cross-section of the handle of this utility model;

[0020] Figure 4 This is a schematic diagram of a clamp mounted on a rotary slide.

[0021] In the diagram: 1 Support plate, 2 Connecting seat, 3 Locking assembly, 4 Clamping assembly, 5 Bearing ring, 6 Bracket, 7 Rotary slide, 11 Groove, 12 Through hole, 21 Inner hole, 31 Handle, 32 Gear, 33 Limit bolt, 41 Connecting plate, 42 Fixing plate, 43 Clamping block, 44 Slide rail, 45 Slide seat. Detailed Implementation

[0022] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice this utility model. Although this utility model has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative and not intended to limit the scope of this utility model.

[0023] See Figure 1-4 In one embodiment of this utility model, a bearing ring measuring fixture is provided. This fixture is specifically used for measuring the roundness of the outer ring of a bearing ring. The fixture includes: a support plate 1 and a connecting seat 2, a locking assembly 3, and a clamping assembly 4 disposed on the support plate 1. The connecting seat 2 and the locking assembly 3 are both movably disposed. The locking assembly 3 is slidably connected to the connecting seat 2 and is used to drive the connecting seat 2 to rotate around an axis. The clamping assembly 4 is provided in three sets. The three sets of clamping assemblies 4 are distributed around the axis of the connecting seat 2 and are all movably connected to the connecting seat 2. At least part of the clamping assembly 4 is movably disposed. Under the action of external force, the locking assembly 3 can drive the connecting seat 2 to make the movably disposed parts of the three sets of clamping assemblies 4 move together to achieve clamping of the bearing ring.

[0024] Specifically, the support plate 1 has a triangular plate structure, with a groove 11 at the center of the support plate 1, a through hole 12 at the axial center of the bottom wall of the groove 11, and an internal tooth groove on the inner side wall of the groove 11. The triangular plate structure of the support plate 1 corresponds to the three sets of clamping components 4. The bearing ring can be stably clamped by three-point positioning. At the same time, this structure is also the most economical design. Therefore, if the economy allows or the test needs, in other embodiments, the number of clamping components 4 can also be more than three sets.

[0025] The connecting seat 2 has a T-shaped cylindrical structure. The thinner end of the connecting seat 2 slides in contact with the support plate 1, which reduces the friction between the connecting seat 2 and the support plate 1 and facilitates operation. The connecting seat 2 has a through inner hole 21 on its axis. The inner wall of the inner hole 21 has the same internal tooth groove as the inner side wall of the groove 11. Furthermore, the inner diameter of the inner hole 21 is the same as the inner diameter of the groove 11.

[0026] The locking assembly 3 includes a handle 31, a gear 32, and a limiting bolt 33. The handle 31 is coaxially arranged with the inner hole 21 and the through hole 12. The lower part of the handle 31 slides through the inner hole 21 and the through hole 12 in sequence and extends to the lower side of the support plate 1. The gear 32 is fixedly sleeved in the middle of the handle 31. At the same time, the gear 32 can form a meshing fit with the inner tooth groove of the support plate 1 and the connecting seat 2. The thickness of the gear 32 is greater than the depth of the groove.

[0027] The limiting bolt 33 is fixed to the lower end of the handle 31 and the lower side of the support plate 1 by means of threaded connection. The outer diameter of the nut of the limiting bolt 33 is larger than the inner diameter of the through hole 12. Under the restriction of the limiting bolt 33 and the gear 32, the locking assembly 3 can move up and down within a limited range to lock or release the support plate 1 and the connecting seat 2.

[0028] The clamping assembly 4 includes a connecting plate 41, a fixing plate 42, a clamping block 43, a slide rail 44, and a slide base 45. The slide rail 44 is laid radially along the inner hole 21. The fixing plate 42 is mounted on the slide rail 44 via the slide base 45. The fixing plate 42 is rotatably connected to the connecting seat 2 via the connecting plate 41. When the connecting seat 2 is driven to rotate by an external force, the connecting seat 2 can drive the fixing plate 42 to move radially. The clamping block 43 is fixed to the fixing plate 42 by screws. The clamping block 43 can move closer to or further away from the connecting seat 2 with the fixing plate 42. The clamping block 43 is used to compress the bearing ring to form a clamp. In implementation, the clamping range of this fixture can be adjusted by changing the position of the clamping block 43 on the fixing plate 42. Compared with traditional chucks, this fixture is more flexible in use. In this embodiment, the clamping block 43 is made of soft rubber. For clamping stability, anti-slip grooves can also be provided on the clamping block 43.

[0029] It should be noted that the distance between the limiting bolt 33 and the support plate is greater than the depth of the groove 11.

[0030] In use, after rotating the connecting seat 2 to bring the clamping block 43 to a certain position, pressing down the handle 31 can simultaneously engage the gear 32 with the support plate 1 and the connecting seat 2. Based on the lever principle, the positions of the support plate 1 and the connecting seat 2 are fixed, and at this time, the support plate 1 and the connecting seat 2 are in a locked state. In the locked state, the clamping block 43 is fixed in position, forming a clamping state. When the handle 31 is pulled upward to disengage the gear 32 from the support plate 1, the support plate 1 and the connecting seat 2 return to a sliding state. That is, after the gear 32 disengages from the support plate 1, the support plate 1 and the connecting seat 2 can be released. In addition, when the gear 32 is engaged with the connecting seat 2 alone, rotating the handle 31 can drive the connecting seat 2 to rotate, achieving the purpose of clamping or releasing.

[0031] See Figure 4 This fixture is suitable for measuring bearing rings. In use, the fixture can be coaxially mounted on the rotary slide 7 via the bracket 6. In addition, a dial indicator corresponding to the position of the fixture needs to be fixed on one side of the rotary slide. With the help of the rotary slide, the fixture can rotate around the axis under the action of external force. With the help of the dial indicator, the roundness of the outer ring of the bearing ring can be measured.

[0032] This technical solution utilizes multiple fixed plates that slide radially, driven by a connecting seat, on a support plate. Clamping blocks are mounted on these fixed plates, allowing the connecting seat to rotate. This enables the clamping blocks to move closer to or further away from the connecting seat, achieving clamping or releasing functions. The adjustable position of the clamping blocks allows for a larger clamping range compared to traditional three-jaw chucks, enabling the clamping of larger bearing rings. Furthermore, a locking assembly with a locking function is located between the support plate and the connecting seat, maintaining clamping and releasing capabilities. This makes the fixture more convenient to operate, improving measurement efficiency and reducing measurement costs.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A fixture for measuring bearing rings, characterized in that: include Support plate (1), with a groove (11) in the middle; The connecting seat (2) is slidably disposed on the support plate (1). The connecting seat (2) has an inner hole (21), and the groove (11) and the inner sidewall of the inner hole (21) are both provided with internal tooth grooves. The locking assembly (3) includes a handle (31) that slides through a groove (11) and an inner hole (21) and is coaxial with both. A gear (32) that meshes with an inner tooth groove is fixed in the middle of the handle (31). The thickness of the gear (32) is greater than the depth of the groove (11). Clamping assembly (4), the clamping assembly (4) is provided in multiple ways, the multiple clamping assemblies (4) are distributed on the support plate (1) around the axis of the inner hole (21); the clamping assembly (4) includes a clamping block (43) and a fixing plate (42) driven by the connecting seat (2) to approach or move away from the connecting seat (2), the clamping block (43) is detachably provided at the end of the fixing plate (42) away from the connecting seat (2).

2. The bearing ring measuring fixture according to claim 1, characterized in that: The locking assembly (3) also includes a limiting member; a through hole (12) is provided on the bottom wall of the groove (11); the lower end of the handle (31) slides through the through hole (12) and extends to the lower side of the support plate (1); the limiting member is fixedly disposed at the lower end of the handle (31); at least part of the outer diameter of the limiting member is greater than the inner diameter of the through hole (12); the distance between the limiting member and the support plate (1) is greater than the depth of the groove (11).

3. The bearing ring measuring fixture according to claim 2, characterized in that: The limiting component includes a limiting bolt (33); the limiting bolt (33) and the handle (31) are connected by threads.

4. The bearing ring measuring fixture according to claim 1, characterized in that: The clamping assembly (4) further includes a slide rail (44) and a slide block (45) slidably disposed on the slide rail (44); the fixing plate (42) is fixedly disposed on the slide rail (44); the slide rail (44) is laid radially along the inner hole (21).

5. A fixture for measuring bearing rings according to claim 1 or 4, characterized in that: The clamping assembly (4) also includes a connecting plate (41), and the fixing plate (42) is rotatably connected to the connecting seat (2) through the connecting plate (41).

6. A fixture for measuring bearing rings according to claim 1, characterized in that: The clamp (43) is made of rubber.

7. A fixture for measuring bearing rings according to claim 1, characterized in that: The clamping block (43) is provided with anti-slip grooves.

8. A fixture for measuring bearing rings according to claim 1, characterized in that: The connecting seat (2) has a T-shaped structure.

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