Positioning fixture for mounting multi-size bearings

Abstract

The utility model relates to the technical field of machine manufacturing, in particular to a positioning fixture for mounting bearings with multiple sizes, which comprises a base, a central positioning shaft rotatably connected to the surface of the base, a plurality of moving rods slidably connected to the surface of the base, clamping blocks fixedly connected to the surfaces of the moving rods, and bearings lapped to the surface of the central positioning shaft. The multiple clamping blocks are clamped on the surface of the bearing, the surface of the center positioning shaft is slidably connected with a pressing plate in a sleeving mode, and the pressing plate is attached to the surface of the bearing; the device has the beneficial effects that through mutual cooperation of an adjustable clamping block and a center positioning shaft, bearings of different sizes can be clamped and positioned, the center position and the horizontal position of the bearing in the installation process can be accurately adjusted, the installation positioning error is reduced, and through mutual cooperation of a pressing bolt, a connecting rod and a pressing plate, the bearing can be clamped and positioned more accurately. And the bearing can be preliminarily pressed in the mounting process, and the mounting efficiency of the bearing is improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing technology, specifically a positioning fixture for mounting multi-size bearings. Background Technology

[0002] In the machinery industry, bearings are key components that connect rotating parts and support mechanical structures. The quality of their installation directly affects the performance of mechanical equipment. When the bearing is fixedly installed on the bearing housing, it is necessary to manually hold the installation bolts to fix the bearing housing and the bearing. Positioning deviations are prone to occur during the installation process.

[0003] In the prior art, bearing mounting and positioning fixtures are usually used for installation. The positioning mechanism includes a fixed base, and the surface of the base is provided with fixtures of a specific size. The bearing is positioned and clamped by the fixtures, thereby reducing installation and positioning errors.

[0004] However, the bearings used in different mechanical equipment come in a wide variety of sizes and specifications. When clamping bearings of different sizes, different positioning fixtures need to be changed, resulting in poor fixture applicability and low efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a positioning fixture for mounting bearings of various sizes, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a positioning fixture for mounting multi-size bearings, comprising a base, a central positioning shaft rotatably connected to the surface of the base, multiple moving rods slidably connected to the surface of the base, clamping blocks fixedly connected to the surface of the moving rods, bearings overlapping the surface of the central positioning shaft, multiple clamping blocks clamping the surface of the bearings, and a pressure plate slidably sleeved on the surface of the central positioning shaft, the pressure plate being attached to the surface of the bearings.

[0007] Preferably, the base has a square plate structure, a first threaded hole is provided at the center of the base, and multiple fixing plates are fixedly connected to the surface of the base. The fixing plates have a square plate structure, a second threaded hole is provided on the surface of the fixing plates, and two third threaded holes are provided on the surface of the base.

[0008] Preferably, one end of the central positioning shaft is tapered, and the other end of the central positioning shaft is provided with a threaded portion, which is connected to the first threaded hole. An adjusting nut is provided on the surface of the threaded portion.

[0009] Preferably, the surface of the base is provided with multiple sliding grooves arranged in a circumferential array. The sliding grooves are T-shaped grooves. The moving rod is slidably connected in the sliding groove. A locking bolt is rotatably connected to one end of the moving rod. The locking bolt is engaged with the second threaded hole.

[0010] Preferably, the clamping block has an arc-shaped plate structure, and a rubber pad is fixedly connected to one end surface of the clamping block, with the rubber pad clamped between the bearing and the clamping block.

[0011] Preferably, the clamping plate has an annular plate structure, and a support pad is fixedly connected to one end surface of the clamping plate. The support pad is attached between the clamping plate and the bearing, and connecting rods are fixedly connected to both sides of the surface of the clamping plate.

[0012] Preferably, a clamping bolt is rotatably connected to the surface of the connecting rod, the clamping bolt is engaged with the third threaded hole, and a rotating handle is fixedly connected to the end of the clamping bolt away from the connecting rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The positioning fixture for multi-size bearing installation proposed in this utility model can clamp and position bearings of different sizes through the mutual cooperation of adjustable clamping blocks and central positioning shaft, and can accurately adjust the center position and horizontal position of the bearing during the installation process, thereby reducing installation positioning errors.

[0015] By using the cooperation of clamping bolts, connecting rods, and clamping plates, the bearing can be initially clamped during installation, thus improving the installation efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a half-sectional schematic diagram of the structure of this utility model;

[0018] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 4 This is a schematic diagram of the extrusion mechanism of this utility model;

[0020] Figure 5 This is an exploded view of the structure of this utility model.

[0021] In the diagram: 1. Base; 2. Bearing; 3. Fixing plate; 4. Center positioning shaft; 5. Threaded part; 6. Locking bolt; 7. Connecting rod; 8. Moving rod; 9. Clamping bolt; 10. Rotating handle; 11. Clamping plate; 12. Support pad; 13. Clamping block; 14. Rubber pad; 15. Sliding groove; 16. First threaded hole; 17. Second threaded hole; 18. Third threaded hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Example 1

[0024] Please see Figures 1 to 2 This utility model provides a technical solution: a positioning fixture for mounting multi-size bearings, including a base 1, a central positioning shaft 4 rotatably connected to the surface of the base 1, a plurality of moving rods 8 slidably connected to the surface of the base 1, a clamping block 13 fixedly connected to the surface of the moving rods 8, a bearing 2 overlapping the surface of the central positioning shaft 4, the plurality of clamping blocks 13 clamping the surface of the bearing 2, a pressure plate 11 slidably sleeved on the surface of the central positioning shaft 4, the pressure plate 11 and the surface of the central positioning shaft 4 having a clearance fit to avoid direct contact friction, and the pressure plate 11 adhering to the surface of the bearing 2;

[0025] By cooperating with the adjustable clamping block 13 and the central positioning shaft 4, bearings 2 of different sizes can be clamped and positioned, and the center position and horizontal position of the bearing 2 can be precisely adjusted during the installation process, reducing installation positioning errors. By cooperating with the clamping bolt 9, the connecting rod 7 and the clamping plate 11, the bearing 2 can be initially clamped during the installation process, improving the installation efficiency of the bearing 2.

[0026] Example 2

[0027] Please see Figures 1 to 4 Based on the first embodiment, in order to clamp bearings 2 of different sizes, the base 1 has a square plate structure. A first threaded hole 16 is provided at the center of the base 1. The first threaded hole 16 provides an installation positioning reference for the center positioning shaft 4. Through the threaded connection, the center positioning shaft 4 can be stably installed on the base 1, ensuring that its center coincides with the center of the base 1.

[0028] Multiple fixing plates 3 are fixedly connected to the surface of the base 1. The fixing plates 3 are square plate structures. The fixing plates 3 provide support and space for tightening bolts 6. The surface of the fixing plates 3 is provided with a second threaded hole 17. One end of the center positioning shaft 4 is tapered. The tapered surface can be adapted to the tolerance range of the standard bearing inner diameter. When installing the bearing 2, the tapered surface can fit tightly with the inner hole of the bearing 2 with different inner diameter sizes, so that the center of the bearing 2 coincides with the center of the center positioning shaft 4, which effectively reduces human error in the installation process and improves installation efficiency and quality.

[0029] The other end of the center positioning shaft 4 is provided with a threaded part 5, which is connected to the first threaded hole 16. An adjusting nut is provided on the surface of the threaded part 5, and an anti-loosening washer is provided between the adjusting nut and the threaded part 5. The adjusting nut enables the center positioning shaft 4 to make fine adjustments to its axial position, so that the bearing 2 can be in the optimal installation position during the installation process when facing bearings 2 of different thicknesses.

[0030] The surface of the base 1 has multiple sliding grooves 15 arranged in a circular array. The sliding grooves 15 are T-shaped and can limit the position of the moving rod 8. The moving rod 8 is slidably connected in the sliding grooves 15. The part of the moving rod 8 exposed on the upper end of the base 1 is L-shaped, while the part sliding in the sliding grooves 15 is T-shaped. A locking bolt 6 is rotatably connected to one end of the moving rod 8. The locking bolt 6 is engaged with the second threaded hole 17. The surface of the base 1 has two third threaded holes 18, which are arranged on the diagonal of the base 1.

[0031] Example 3

[0032] Please see Figures 1 to 5 Based on Embodiment 2, in order to press the bearing 2, the clamping block 13 has an arc-shaped plate structure, which can better fit the outer ring contour of the bearing 2. A rubber pad 14 is fixedly connected to one end surface of the clamping block 13. The rubber pad 14 is clamped between the bearing 2 and the clamping block 13, which can significantly increase the friction between the two and avoid rigid contact between the clamping block 13 and the surface of the bearing 2, thereby causing damage to the surface of the bearing 2.

[0033] The clamping plate 11 has an annular plate structure. The outer ring diameter of the clamping plate 11 is smaller than the minimum distance from the clamping block 13 to the central positioning shaft 4. A support pad 12 is fixedly connected to one end surface of the clamping plate 11. The support pad 12 fits between the clamping plate 11 and the bearing 2 to prevent damage to the surface of the bearing 2 during the clamping process and to ensure the surface quality and performance of the bearing 2.

[0034] Connecting rods 7 are fixedly connected to both sides of the surface of the clamping plate 11. Clamping bolts 9 are rotatably connected to the surface of the connecting rods 7. The clamping bolts 9 are connected to the third threaded hole 18. A rotating handle 10 is fixedly connected to the end of the clamping bolt 9 away from the connecting rods 7. By rotating the clamping bolt 9, the pressure of the clamping plate 11 on the bearing 2 can be precisely adjusted.

[0035] In actual use, first adjust the axial position of the center positioning shaft 4 by screwing it on according to the size of the bearing 2 to be installed. After determining the position, fix the position of the center positioning shaft 4 by adjusting the nut. Insert the tapered end of the center positioning shaft 4 into the inner hole of the bearing 2. Use the centering effect of the conical surface to make the center of the bearing 2 and the center of the center positioning shaft 4 accurately coincide. Then rotate the locking bolt 6. The locking bolt 6 drives the moving rod 8 to adjust the radial position on the base 1, so that the rubber pad 14 of the clamping block 13 fits tightly with the outer surface of the bearing 2, thereby fixing the bearing 2.

[0036] Place the positioning fixture with bearing 2 installed after positioning into the target installation position, ensuring that the center positioning shaft 4 is precisely aligned with the center hole of the target installation position. Then, gradually tighten the clamping bolt 9. The clamping bolt 9 drives the clamping plate 11 to move towards one end of the bearing 2, so that the clamping plate 11 applies downward pressure to the bearing 2, and tightly presses the bearing 2 into the target installation position.

[0037] After installation, rotate handle 10 in the opposite direction to make clamping bolt 9 drive clamping plate 11 away from the surface of bearing 2. Then tighten locking bolt 6 to make clamping block 13 disengage from the outer surface of bearing 2. Finally, slowly pull the center positioning shaft 4 out of the inner hole of bearing 2 to successfully separate the positioning fixture from the installed bearing 2.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-size bearing mounted positioning fixture, characterized by: The utility model provides a centering device, including base (1), the surface of base (1) is rotatably connected with centering shaft (4), the surface of base (1) is slidably connected with a plurality of moving rod (8), the surface of moving rod (8) is fixedly connected with clamping block (13), the surface of centering shaft (4) is overlapped with bearing (2), a plurality of clamping block (13) is clamped in the surface of bearing (2), the surface of centering shaft (4) is slidably sleeved with compression plate (11), and compression plate (11) is attached to the surface of bearing (2).

2. A multi-size bearing mounted positioning fixture as set forth in claim 1, characterized in that: The base (1) is square plate structure, the center position of base (1) is provided with first threaded hole (16), the surface of base (1) is fixedly connected with a plurality of fixed plate (3), the surface of fixed plate (3) is provided with second threaded hole (17), and the surface of base (1) is provided with two third threaded hole (18).

3. A multi-sized bearing mounted positioning fixture as set forth in claim 2, characterized in that: The one end of centering shaft (4) is conical surface, the other end surface of centering shaft (4) is provided with threaded portion (5), threaded portion (5) is connected with first threaded hole (16) each other, and the surface of threaded portion (5) is provided with adjusting nut.

4. A multi-size bearing mounted positioning fixture as set forth in claim 2, characterized in that: The surface of base (1) is provided with a plurality of circular array distribution sliding groove (15), the sliding groove (15) is '' T '' slot, the moving rod (8) is slidably connected in sliding groove (15), and the one end surface of moving rod (8) is rotatably connected with locking bolt (6), and locking bolt (6) is connected with second threaded hole (17) each other.

5. A multi-size bearing mounted positioning fixture as set forth in claim 1, characterized by: The clamping block (13) is arc plate structure, and the one end surface of clamping block (13) is fixedly connected with rubber pad (14), and the rubber pad (14) is clamped between bearing (2) and clamping block (13).

6. A multi-size bearing mounted positioning fixture as set forth in claim 1, characterized by: The compression plate (11) is annular plate structure, and the one end surface of compression plate (11) is fixedly connected with support pad (12), and the support pad (12) is attached between compression plate (11) and bearing (2), and the surface of compression plate (11) is fixedly connected with connecting rod (7) on both sides.

7. A multi-sized bearing mounted positioning fixture as set forth in claim 6, characterized in that: The surface of connecting rod (7) is rotatably connected with compression bolt (9), and compression bolt (9) is connected with third threaded hole (18) each other, and the one end surface of compression bolt (9) away from connecting rod (7) is fixedly connected with rotating handle (10).

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