Rolling needle bearing press-fitting tool

Abstract

This utility model relates to the field of assembly tooling technology, and in particular to a needle roller bearing press-fitting tool, which solves the problems of repeated positioning required for bearing installation, bearing damage during press-fitting, and complex pressure adjustment for different bearings in existing technologies. A needle roller bearing press-fitting tool includes a hydraulic pump fixedly connected to one side of the top of a housing, a sleeve installed at one end of the hydraulic pump, and a base pad fixedly connected to the bottom of the housing near the sleeve. An adjustment box is fixedly connected to one end of one side of the housing. This utility model allows for bearing positioning and installation by changing to a suitable clamp, eliminating the need for repeated positioning. The adjustment machine and the clamp with a buffering effect prevent damage to the bearing during installation.

Description

Technical Field

[0001] This utility model relates to the field of assembly tooling technology, and in particular to a needle roller bearing press-fitting tooling. Background Technology

[0002] Needle roller bearings are widely used in many fields due to their compact radial structure and high load-bearing capacity. The quality of their press-fitting directly affects equipment performance and lifespan. Traditional needle roller bearing press-fitting fixtures often use manual hammering or simple press-fitting equipment, making it difficult to accurately control the press-fitting force and angle. This easily leads to damage to the needle roller bearings, improper assembly, abnormal bearing operation, and shortened lifespan. Furthermore, manual operation is inefficient and inconsistent, failing to meet the demands of large-scale, high-quality production. Therefore, there is an urgent need for a high-precision, high-efficiency needle roller bearing press-fitting fixture.

[0003] Chinese Patent Publication No. CN107443048B discloses a utility model of a steering knuckle needle roller bearing press-fitting fixture and press-fitting process. The press-fitting fixture includes a fixedly connected power component and a press-fitting component. The power component includes a hydraulic cylinder and a connecting plate. One end of the connecting plate is connected to the steering knuckle, and the other end is connected to the hydraulic cylinder. The press-fitting component includes a guide rod, guide sleeves, and a stop block. The guide sleeves are respectively disposed at the left and right ends of the guide rod, and the stop block is disposed between the two guide sleeves. The telescopic rod of the hydraulic cylinder passes through the connecting plate and is detachably connected to the guide rod. Based on the coaxial structure of the two main pin holes of the steering knuckle, this invention uses a guide rod and two guide sleeves to position and press-fit the needle roller bearing. The push-pull force generated by the hydraulic cylinder drives the guide rod forward and backward, thereby driving the stop block to press the needle roller bearing into the main pin holes. One cylinder action can complete the press-fitting of two needle roller bearings, ensuring reliable positioning, high assembly quality, and allowing for press-fitting operations on a raceway frame, making the operation simple and convenient.

[0004] Most bearing press-fitting fixtures on the market lack precise positioning capabilities, requiring manual re-alignment of the bearings, which is time-consuming, labor-intensive, and inefficient. Furthermore, different bearings require different pressures for installation, and traditional devices are complex to adjust and lack buffering during press-fitting, which can damage the bearings during the installation process.

[0005] Therefore, we propose a needle roller bearing press-fitting fixture to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a needle roller bearing press-fitting fixture, which solves the problems in the prior art where bearing installation requires repeated positioning, bearings are damaged during press-fitting, and the press-fitting pressure adjustment for different bearings is complicated.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A needle roller bearing press-fitting fixture includes a housing. A hydraulic pump is fixedly connected to one side of the top of the housing. A sleeve is installed at one end of the hydraulic pump. A base pad is fixedly connected to the bottom of the housing, near the sleeve. An adjusting box is fixedly connected to one end of one side of the housing. A pull button is installed on one side of the adjusting box. A return pipe is connected to one side of the adjusting box, and an outlet pipe is connected to the other side. One end of the return pipe is connected to one side of the hydraulic pump, and the other side of the hydraulic pump is connected to one side of the outlet pipe.

[0008] Preferably, the bottom end of the hydraulic pump is fixedly connected to a connecting column, the sleeve is threadedly connected to one end of the connecting column, and the bottom pad is threadedly connected to the bottom of the outer shell.

[0009] Preferably, four support columns are fixedly connected between the housing and the hydraulic pump, and the housing and the support columns are fixedly connected by fixing bolts.

[0010] Preferably, the regulating box has two baffles inside, one side of each baffle is fixedly connected to both sides of the inner surface of the regulating box, and a sleeve post is fitted on the outer surface of the pull button, with the two baffles fixedly connected to the outer surface of the sleeve post.

[0011] Preferably, both the sleeve and the base are made of forged steel with a cushioning effect, such as 4CrW2Si steel, 42CrMoA steel and 35CrMo steel, and any one of the above steels may be selected.

[0012] This utility model has at least the following beneficial effects: The hydraulic press power is adjusted by controlling the regulating box with a pull knob, allowing for the use of different bearing installations. Furthermore, the use of cushioning components prevents bearing damage during pressing, improving work efficiency, reducing worker fatigue, and ultimately minimizing product defects.

[0013] This utility model also has the following beneficial effects: Precise insertion and alignment are achieved using sleeves and base pads with cylindrical rods, enabling continuous bearing processing without repositioning. Furthermore, by changing the sleeves and base pads, different bearings can be positioned, expanding the applicability range, reducing the time spent on repeated positioning, and thus lowering the working intervals of continuous operation, thereby achieving accurate, efficient, and rapid press-fitting. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall half-section structure of this utility model; Figure 3 This is a schematic diagram of the overall axial half-section structure of this utility model; Figure 4 This is a partially enlarged structural schematic diagram of the present invention; Figure 5 This is a half-section enlarged structural schematic diagram of the regulating box of this utility model.

[0016] In the diagram: 1. Outer shell; 2. Hydraulic pump; 3. Support column; 4. Sleeve; 5. Base pad; 6. Adjustment box; 7. Pull button; 8. Return pipe; 9. Outlet pipe; 10. Fixing bolt; 11. Connecting column; 12. Baffle; 13. Sleeve. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] Reference Figure 1-4 A needle roller bearing press-fit fixture includes a hydraulic pump 2 fixedly connected to one side of the top of a housing 1. The hydraulic pump 2 provides pressure to press the bearing into the housing (not shown). A sleeve 4 is installed at one end of the hydraulic pump 2. A base pad 5 is fixedly connected to the bottom of the housing 1 near the sleeve 4. The sleeve 4 and the bearing cooperate with the base pad 5 to achieve quick positioning of the bearing during installation. An adjustment box 6 is fixedly connected to one end of one side of the housing 1. A pull button 7 is installed on one side of the adjustment box 6. The outer surface of the pull button 7 is engraved with scales to facilitate precise adjustment of the pull button 7. A return pipe 8 is connected to one side of the adjustment box 6, and an outlet pipe 9 is connected to the other side. One end of the return pipe 8 is connected to one side of the hydraulic pump 2, and the other side of the hydraulic pump 2 is connected to one side of the outlet pipe 9. By changing the flow rate of the liquid inside the hydraulic pump 2, the power of the hydraulic pump 2 is changed.

[0019] Furthermore, the bottom end of the hydraulic pump 2 is fixedly connected to a connecting post 11, and the sleeve 4 is connected to one end of the connecting post 11 by a threaded connection. The bottom pad 5 is connected to the bottom of the outer casing 1 by a threaded connection. Therefore, both the sleeve 4 and the bottom pad 5 can be replaced, making the device suitable for bearing installation in many different scenarios.

[0020] Furthermore, four support columns 3 are fixedly connected between the outer casing 1 and the hydraulic pump 2. The outer casing 1 and the support columns 3 are fixedly connected by fixing bolts 10. The four support columns 3 provide additional support force, making the device more stable.

[0021] Furthermore, the regulating box 6 is equipped with two baffles 12 inside. One side of the two baffles 12 is fixedly connected to both sides of the inner surface of the regulating box 6. The outer surface of the pull button 7 is fitted with a sleeve post 13. The outer surface of the sleeve post 13 has two holes, one near the return pipe 8 and the other near the outlet pipe 9. The two baffles 12 are fixedly connected to the outer surface of the sleeve post 13, thereby dividing the interior of the regulating box 6 into two cavities. By pulling the pull button 7 to different distances, the flow rate of the solution inside the regulating box 6 can be controlled, thereby controlling the power of the hydraulic pump 2.

[0022] Specifically, both the sleeve 4 and the base 5 are made of forged steel with a cushioning effect, such as 4CrW2Si steel, 42CrMoA steel and 35CrMo steel. Any one of these steels can be selected. By choosing this forged steel that can absorb pressure, the bearing is protected and damage is prevented during installation.

[0023] In summary: The staff first selects a suitable sleeve 4 and a base pad 5, then installs the sleeve 4 and the base pad 5 on one end of the connecting column 11 and one side of the outer shell 1, respectively. Then, by adjusting the scale on the outer surface of the pull button 7, the extension distance of the pull button 7 is adjusted to control the flow rate of the solution passing through the sleeve 13 inside the regulating box 6, thereby adjusting the power of the hydraulic pump 2. This allows the device to use different bearings for installation. The bearings are installed on the sleeve 4, and the base pad 5 is fitted with the shell to be installed. The same type of bearing only needs to be positioned during the first installation. The installation of other bearings of the same type does not require repeated positioning. The hydraulic pump 2 is started to press the bearing into the shell (not visible). The shell (not visible) is then removed, and the operation is repeated.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A needle bearing press-fitting tool comprising a housing (1), characterized in that, A hydraulic pump (2) is fixedly connected to one side of the top of the outer shell (1). A sleeve (4) is installed at one end of the hydraulic pump (2). A bottom pad (5) is fixedly connected to the bottom of the outer shell (1) and the side near the sleeve (4). An adjustment box (6) is fixedly connected to one end of one side of the outer shell (1). A pull button (7) is installed on one side of the adjustment box (6). A return pipe (8) is connected to one side of the adjustment box (6), and an outlet pipe (9) is connected to the other side. One end of the return pipe (8) is connected to one side of the hydraulic pump (2), and the other side of the hydraulic pump (2) is connected to one side of the outlet pipe (9).

2. The rolling needle bearing press-fitting tool according to claim 1, characterized in that, The bottom end of the hydraulic pump (2) is fixedly connected to a connecting column (11), and the sleeve (4) is connected to one end of the connecting column (11) by a threaded connection. The bottom pad (5) is connected to the bottom of the outer shell (1) by a threaded connection.

3. The rolling needle bearing press-fitting tool according to claim 1, characterized in that, Four support columns (3) are fixedly connected between the outer shell (1) and the hydraulic pump (2), and the outer shell (1) and the support columns (3) are fixedly connected by fixing bolts (10).

4. The rolling needle bearing press-fitting tool according to claim 1, characterized in that, The regulating box (6) is provided with two baffles (12) inside. One side of the two baffles (12) is fixedly connected to both sides of the inner surface of the regulating box (6). The outer surface of the pull button (7) is fitted with a sleeve post (13). The two baffles (12) are fixedly connected to the outer surface of the sleeve post (13).

5. The needle bearing press-fitting tool according to claim 1, wherein The sleeve (4) and the base pad (5) are both forged steels with a cushioning effect, such as 4CrW2Si steel, 42CrMoA steel and 35CrMo steel, and any one of the above steels can be selected.

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