A bearing inner ring plane grinding positioning protection device

Abstract

This application belongs to the technical field of positioning and protection devices, and discloses a positioning and protection device for grinding the inner ring of a bearing. It includes a positioning seat for placing the inner ring of the bearing, multiple sliding seats slidably disposed on the positioning seat, a first clamping block fixed to the top of each sliding seat, and a second clamping block fixed to the top of each sliding seat and pressed against the inner wall of the bearing inner ring. The distance between the second clamping block and the axis of the positioning seat is less than the distance between the first clamping block and the axis of the positioning seat. The number of second clamping blocks, the number of first clamping blocks, and the number of sliding seats are all equal and their positions correspond one-to-one. Multiple mounting blocks are fixed to the bottom of the positioning seat, and a displacement mechanism is provided on the positioning seat to drive the multiple sliding seats to move towards or away from the axis of the positioning seat. This application, by setting up sliding seats, first clamping blocks, second clamping blocks, and a displacement mechanism, can achieve positioning for grinding the end face of the bearing inner ring and grinding the inner and outer side walls, expanding the applicability of the positioning fixture.

Description

Technical Field

[0001] This utility model relates to the technical field of positioning and protection devices, and in particular to a positioning and protection device for grinding the inner ring of a bearing. Background Technology

[0002] The grinding of the inner ring of a bearing mainly includes two processes: grinding the inner ring end face and grinding the inner diameter. During the grinding process, a positioning device is required to ensure stable clamping, so as to guarantee the accuracy of the bearing ring after grinding and to play a safety protection role during the grinding process.

[0003] In the existing technology, when performing two processes of grinding the end face and grinding the inner diameter of the bearing inner ring, separate fixtures are used for end face grinding and inner diameter grinding, respectively. It is impossible to use a single fixture to hold both processes, which reduces the applicability of the tooling. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a bearing inner ring plane grinding positioning and protection device.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a bearing inner ring surface grinding positioning and protection device, comprising a positioning seat for placing the bearing inner ring, a plurality of sliding seats slidably disposed on the positioning seat, a first clamping block fixed to the top of the sliding seat, a second clamping block fixed to the top of the sliding seat and in close contact with the inner wall of the bearing inner ring, the distance between the second clamping block and the axis of the positioning seat is less than the distance between the first clamping block and the axis of the positioning seat, the number of the second clamping blocks, the number of the first clamping blocks and the number of sliding seats are all equal and their positions correspond one-to-one, a plurality of mounting blocks are fixed to the bottom of the positioning seat, and a displacement mechanism is provided on the positioning seat for driving the plurality of sliding seats to move toward or away from the axis of the positioning seat.

[0006] By adopting the above technical solution, the bearing inner ring to be ground is first placed on the top of the positioning seat, between the first and second clamping blocks. Then, the displacement mechanism drives multiple sliding blocks to move away from the axis of the positioning seat until the multiple second clamping blocks are in close contact with the inner wall of the bearing inner ring. At this point, the grinding of the outer wall and end of the bearing inner ring can be performed. After the grinding is completed, the displacement mechanism drives multiple sliding blocks to move closer to the axis of the positioning seat until the multiple first clamping blocks are in close contact with the outer wall of the bearing inner ring. At this point, the inner wall grinding operation of the bearing inner ring can be performed, thus expanding the applicable range of the positioning fixture.

[0007] Furthermore, the displacement mechanism includes a displacement assembly, which includes a mounting shell fixedly sleeved on the positioning seat, a sliding plate that passes through the mounting shell and is slidably engaged, an adjusting column disposed on the sliding plate and located inside the mounting shell, and an adjusting plate rotatably mounted inside the mounting shell and coaxially disposed with the mounting shell. The adjusting plate has an adjusting through hole that slidably engages with the adjusting column. The adjusting through hole is eccentrically disposed with the adjusting plate. The sliding plate is fixedly connected to the sliding seat. The number of sliding plates, the number of sliding seats, the number of adjusting columns, and the number of adjusting through holes are all equal and their positions correspond one-to-one. The displacement mechanism also includes a rotating assembly for driving the adjusting plate to rotate.

[0008] By adopting the above technical solution, the adjusting plate is driven to rotate by the rotating component. Since the adjusting through hole and the adjusting column are in sliding fit and the adjusting through hole and the adjusting plate are eccentrically set, the adjusting column, the sliding plate connected to the adjusting column and the sliding seat connected to the sliding plate all move towards or away from the axis of the positioning seat. This achieves the purpose of positioning the bearing inner ring by the first clamping block or the second clamping block. The operation is simple and convenient and easy to use.

[0009] Furthermore, the rotating assembly includes an arc rack fixed to the adjusting plate and coaxially arranged with the adjusting plate, a transmission rod rotatably mounted on the top wall of the mounting housing, and a gear fixedly sleeved on the transmission rod and meshing with the arc rack. The displacement mechanism also includes a rotating component for facilitating the rotation of the transmission rod.

[0010] By adopting the above technical solution, the transmission rod is driven to rotate by the rotating component, which in turn causes the gear connected to the transmission rod, the arc rack meshing with the gear, and the adjusting plate fixed to the arc rack to all rotate, thereby ensuring the normal clamping operation of the device.

[0011] Furthermore, the rotating assembly includes a worm gear fixedly sleeved on the transmission rod, a worm rotatably mounted inside the mounting housing and meshing with the worm gear, and a motor fixed to the mounting housing and driving the worm to rotate.

[0012] By adopting the above technical solution, the rotating component drives the worm to rotate after it works, which in turn causes the worm wheel meshing with the worm and the transmission rod fixed to the worm wheel to rotate. Due to the locking effect between the worm wheel and the worm, the stability of the second clamping block or the first clamping block when clamping is ensured.

[0013] Furthermore, the top of the positioning seat is provided with a sliding groove that slides and engages with the sliding seat. A sliding rod is fixed in the sliding groove. The sliding rod passes through the sliding seat and slides and engages with it. The number of sliding grooves, the number of sliding rods, and the number of sliding seats are all equal and their positions correspond one-to-one. The sliding plate passes through the sliding groove and slides and engages with it.

[0014] By adopting the above technical solution, the limiting function of the sliding groove and the sliding rod improves the stability of the sliding seat during movement.

[0015] Furthermore, wavy grooves are provided on the sidewalls of the first and second clamping blocks that are close to each other.

[0016] By adopting the above technical solution, the frictional force when the first or second clamping block is in contact with the inner ring surface of the bearing is improved.

[0017] Furthermore, an L-shaped fixing baffle is fixed on the slide plate, the bottom of the horizontal section of the fixing baffle is in contact with the top of the mounting shell, and the distance between the top of the second clamping block and the top of the positioning seat is less than the thickness of the inner ring of the bearing.

[0018] Furthermore, the adjusting column is rotatably connected to the sliding plate.

[0019] By adopting the above technical solution, the sliding friction between the adjusting column and the adjusting through hole is converted into rolling friction, thereby reducing the friction between the adjusting column and the adjusting plate.

[0020] In summary, the present invention has the following beneficial effects: In this application, by setting a sliding seat, a first clamping block, a second clamping block and a displacement mechanism, the positioning of the bearing inner ring end face grinding and the inner and outer side wall grinding can be realized, thus expanding the applicable scope of the positioning fixture. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a cross-sectional schematic diagram of an embodiment of the present invention to highlight the internal structure of the mounting housing; Figure 3 This is a cross-sectional schematic diagram of an embodiment of the present invention to highlight the connection structure between the sliding seat and the sliding rod.

[0022] In the diagram: 1. Positioning seat; 2. Sliding seat; 3. First clamping block; 4. Second clamping block; 5. Displacement mechanism; 51. Displacement assembly; 511. Mounting shell; 512. Slide plate; 513. Adjusting column; 514. Adjusting plate; 515. Adjusting through hole; 52. Rotating assembly; 521. Arc rack; 522. Transmission rod; 523. Gear; 53. Rotating assembly; 531. Worm gear; 532. Worm; 533. Motor; 6. Sliding groove; 7. Slide rod; 8. Fixed baffle; 9. Mounting block. Detailed Implementation

[0023] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] like Figure 1-3 As shown in the figure, this application discloses a bearing inner ring surface grinding positioning and protection device, including a positioning seat 1, a sliding seat 2, and a displacement mechanism 5. The sliding seat 2 has multiple components slidably mounted on the positioning seat 1. A first clamping block 3 is fixed to the top of the sliding seat 2, and a second clamping block 4, which is in close contact with the inner wall of the bearing inner ring, is also fixed to the top of the sliding seat 2. The distance between the second clamping block 4 and the axis of the positioning seat 1 is less than the distance between the first clamping block 3 and the axis of the positioning seat 1. The number of second clamping blocks 4, the number of first clamping blocks 3, and the number of sliding seats 2 are all equal and their positions correspond one-to-one. Multiple mounting blocks 9 are fixed to the bottom of the positioning seat 1. First, the bearing inner ring to be ground is placed on top of the positioning seat 1, between the first clamping block 3 and the second clamping block 4. Then, the displacement mechanism 5 drives multiple sliding seats 2 to move away from the axis of the positioning seat 1 until multiple second clamping blocks 4 are in close contact with the inner wall of the bearing inner ring. At this point, the grinding of the outer wall and end of the bearing inner ring can be performed. After the grinding is completed, the displacement mechanism 5 drives multiple sliding seats 2 to move closer to the axis of the positioning seat 1 until multiple first clamping blocks 3 are in close contact with the outer wall of the bearing inner ring. At this point, the inner wall grinding operation of the bearing inner ring can be performed, thus expanding the applicability of the positioning fixture.

[0025] A displacement mechanism 5 is mounted on the positioning seat 1. The displacement mechanism 5 drives multiple sliding seats 2 to move towards or away from the axis of the positioning seat 1. The displacement mechanism 5 includes a displacement component 51, a rotation component 52, and a turning component 53. The displacement component 51 includes a mounting shell 511, a sliding plate 512, an adjusting column 513, and an adjusting plate 514. The mounting shell 511 is fixedly sleeved on the positioning seat 1. The sliding plate 512 is slidably mounted on the mounting shell 511. The sliding plate 512 is fixedly connected to the sliding seats 2. The adjusting column 513 is mounted on the sliding plate 512 and located inside the mounting shell 511. The adjusting plate 514 is rotatably mounted inside the mounting shell 511 and coaxially arranged with the mounting shell 511. An adjustment through hole 515 is provided through the adjustment plate 514, which slides and engages with the adjustment column 513. The adjustment through hole 515 is eccentrically positioned with the adjustment plate 514. The number of slide plates 512, the number of sliding seats 2, the number of adjustment columns 513, and the number of adjustment through holes 515 are all equal and their positions correspond one-to-one. The adjustment plate 514 is driven to rotate by the rotating component 52. Since the adjustment through hole 515 slides and engages with the adjustment column 513, and the adjustment through hole 515 is eccentrically positioned with the adjustment plate 514, the adjustment column 513, the slide plate 512 connected to the adjustment column 513, and the sliding seat 2 connected to the slide plate 512 all move toward or away from the axis of the positioning seat 1. This achieves the purpose of positioning the inner ring of the bearing by the first clamping block 3 or the second clamping block 4. The operation is simple and convenient, and easy to use.

[0026] The rotating assembly 52 drives the adjusting plate 514 to rotate. The rotating assembly 52 includes an arc rack 521, a transmission rod 522, and a gear 523. The arc rack 521 is fixed to the adjusting plate 514 and coaxially arranged with the adjusting plate 514. The transmission rod 522 is rotatably mounted on the inner top wall of the mounting housing 511. The gear 523 is fixedly sleeved on the transmission rod 522 and meshes with the arc rack 521. By driving the transmission rod 522 to rotate through the rotating assembly 53, the gear 523 connected to the transmission rod 522, the arc rack 521 meshing with the gear 523, and the adjusting plate 514 fixed to the arc rack 521 can all rotate, thereby ensuring the normal clamping operation of the device.

[0027] The rotating assembly 53 facilitates the rotation of the transmission rod 522. The rotating assembly 53 includes a worm gear 531, a worm 532, and a motor 533. The worm gear 531 is fixedly sleeved on the transmission rod 522. The worm 532 is rotatably mounted inside the mounting housing 511 and meshes with the worm gear 531. The motor 533 is fixed to the mounting housing 511 and drives the worm 532 to rotate. After the rotating assembly 53 operates, it drives the worm 532 to rotate, thus causing both the worm gear 531 meshing with the worm 532 and the transmission rod 522 fixed to the worm gear 531 to rotate. Due to the locking effect between the worm gear 531 and the worm 532, the stability of the second clamping block 4 or the first clamping block 3 when clamping is ensured.

[0028] The top of the positioning seat 1 is provided with a sliding groove 6 that slides and engages with the sliding seat 2. A sliding rod 7 is fixed inside the sliding groove 6. The sliding rod 7 passes through the sliding seat 2 and is slidably engaged. The number of sliding grooves 6, the number of sliding rods 7, and the number of sliding seats 2 are all equal and their positions correspond one-to-one. The sliding plate 512 passes through the sliding groove 6 and is slidably engaged. The limiting function of the sliding groove 6 and the sliding rod 7 improves the stability of the sliding seat 2 during movement.

[0029] Both the first clamping block 3 and the second clamping block 4 have wavy grooves on their adjacent sidewalls. This increases the friction when the first clamping block 3 or the second clamping block 4 is in contact with the inner ring surface of the bearing.

[0030] An L-shaped fixing baffle 8 is fixed on the slide plate 512. The bottom of the horizontal section of the fixing baffle 8 is in contact with the top of the mounting shell 511. The distance between the top of the second clamping block 4 and the top of the positioning seat 1 is less than the thickness of the inner ring of the bearing.

[0031] The adjusting column 513 is rotatably connected to the sliding plate 512. The adjusting column 513 converts the sliding friction with the adjusting through hole 515 into rolling friction, thereby reducing the friction between the adjusting column 513 and the adjusting plate 514.

[0032] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A bearing inner ring surface grinding positioning and protection device, comprising a positioning seat (1) for placing the bearing inner ring, characterized in that: Multiple sliding seats (2) are slidably arranged on the positioning seat (1). A first clamping block (3) is fixed on the top of the sliding seat (2). A second clamping block (4) is fixed on the top of the sliding seat (2) and is in close contact with the inner wall of the bearing inner ring. The distance between the second clamping block (4) and the axis of the positioning seat (1) is less than the distance between the first clamping block (3) and the axis of the positioning seat (1). The number of the second clamping block (4), the number of the first clamping block (3), and the number of sliding seats (2) are all equal and their positions correspond one-to-one. Multiple mounting blocks (9) are fixed on the bottom of the positioning seat (1). A displacement mechanism (5) is provided on the positioning seat (1) to drive the multiple sliding seats (2) to move toward or away from the axis of the positioning seat (1).

2. The bearing inner ring surface grinding positioning and protection device according to claim 1, characterized in that: The displacement mechanism (5) includes a displacement assembly (51), which includes a mounting shell (511) fixedly sleeved on the positioning seat (1), a sliding plate (512) that passes through the mounting shell (511) and is slidably engaged with it, an adjusting column (513) that is disposed on the sliding plate (512) and located inside the mounting shell (511), and an adjusting plate (514) that is rotatably installed inside the mounting shell (511) and coaxially disposed with the mounting shell (511). The adjusting plate (514) has a through-type... An adjustment through hole (515) is provided that slides with the adjustment column (513). The adjustment through hole (515) is eccentrically set with the adjustment plate (514). The sliding plate (512) is fixedly connected with the sliding seat (2). The number of sliding plates (512), the number of sliding seats (2), the number of adjustment columns (513) and the number of adjustment through holes (515) are all equal and their positions correspond one-to-one. The displacement mechanism (5) also includes a rotating component (52) for driving the adjustment plate (514) to rotate.

3. The bearing inner ring surface grinding positioning and protection device according to claim 2, characterized in that: The rotating assembly (52) includes an arc rack (521) fixed on the adjusting plate (514) and coaxially arranged with the adjusting plate (514), a transmission rod (522) rotatably mounted on the inner top wall of the mounting shell (511), and a gear (523) fixedly sleeved on the transmission rod (522) and meshing with the arc rack (521). The displacement mechanism (5) also includes a rotating assembly (53) for facilitating the rotation of the transmission rod (522).

4. The bearing inner ring surface grinding positioning and protection device according to claim 3, characterized in that: The rotating assembly (53) includes a worm gear (531) fixedly sleeved on the transmission rod (522), a worm (532) rotatably installed in the mounting housing (511) and meshing with the worm gear (531), and a motor (533) fixed on the mounting housing (511) and driving the worm (532) to rotate.

5. A bearing inner ring surface grinding positioning and protection device according to claim 2, characterized in that: The top of the positioning seat (1) is provided with a sliding groove (6) that slides and engages with the sliding seat (2). A sliding rod (7) is fixed in the sliding groove (6). The sliding rod (7) passes through the sliding seat (2) and slides and engages with it. The number of sliding grooves (6), the number of sliding rods (7), and the number of sliding seats (2) are all equal and their positions correspond one-to-one. The sliding plate (512) passes through the sliding groove (6) and slides and engages with it.

6. The bearing inner ring surface grinding positioning and protection device according to claim 1, characterized in that: The first clamping block (3) and the second clamping block (4) are provided with wavy grooves on their side walls that are close to each other.

7. A bearing inner ring surface grinding positioning and protection device according to claim 2, characterized in that: The slide plate (512) is fixed with an L-shaped fixed baffle (8). The bottom of the horizontal section of the fixed baffle (8) is in contact with the top of the mounting shell (511). The distance between the top of the second clamping block (4) and the top of the positioning seat (1) is less than the thickness of the inner ring of the bearing.

8. A bearing inner ring surface grinding positioning and protection device according to claim 2, characterized in that: The adjusting column (513) is rotatably connected to the sliding plate (512).

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