Bidirectional press-fitting tool and press-fitting equipment for camshaft bearing

Abstract

The utility model discloses a bidirectional press-fitting tool for camshaft bearings, which is used for press-fitting bearings at two ends of a camshaft, and comprises a processing platform, a base is arranged on the processing platform, a lower bearing press-fitting head for fixing the bearings is arranged on the base, guide posts are arranged at two ends of the base, and the lower bearing press-fitting head is connected with the guide posts. The upper end of the upper press-fitting seat is fixedly connected with the press, and the lower end of the upper press-fitting seat is provided with an upper bearing press-fitting head corresponding to the lower bearing press-fitting head. When the bidirectional press-fitting tool for the camshaft bearings is used, the bearings at the upper end and the lower end of the camshaft can be installed on the press-fitting tool in advance, and then the upper bearing press-fitting head is driven by a press to move downwards to achieve press-fitting of the bearings at the two ends of the camshaft at the same time. Therefore, the other end can be continuously mounted without changing the position after one end is mounted, and the mounting efficiency and the mounting quality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to camshaft production technical field, concretely relates to a camshaft bearing two -way press -fitting frock and press -fitting equipment. BACKGROUND

[0002] Camshaft is one of the very important basic structures in automobile drive system parts, and needs to be movably connected with other parts through multiple bearings in use, because the available space is small during assembly, and it is inconvenient to operate, so each bearing needs to be installed and fixed on the camshaft in advance before assembly, and then the whole assembly is adopted. At present, the most common way is to install two bearings at both ends of the camshaft, but most of the domestic production lines currently adopt manual assembly, which is low in efficiency and affected by human factors, and the assembly quality is difficult to guarantee. In the prior art, some production lines adopt press -fitting equipment to press -fit the bearings at one end of the camshaft, and then adjust the direction of the camshaft to press -fit the other end. Although the efficiency and quality have been effectively improved, the overall assembly efficiency is still low. SUMMARY

[0003] In view of the above problems in the prior art, the purpose of the utility model is to provide a camshaft bearing two -way press -fitting equipment, which solves the problems of low assembly efficiency and low assembly quality when installing bearings at both ends of the camshaft in the prior art.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A camshaft bearing two -way press -fitting frock is used for press -fitting bearings at both ends of the camshaft, which comprises a machining platform, a base is arranged on the machining platform, a lower bearing press -fitting head for fixing the bearing is arranged on the base, guide columns are arranged at both ends of the base, and an upper press -fitting seat is slidably arranged on the guide columns, the upper end of the upper press -fitting seat is fixedly connected with a press machine, and the lower end is provided with an upper bearing press -fitting head corresponding to the lower bearing press -fitting head.

[0006] The above structure design can preinstall the bearings at both ends of the camshaft on the press -fitting frock, then drive the upper bearing press -fitting head to move downward by the press machine to realize the simultaneous press -fitting of the bearings at both ends of the camshaft, and then there is no need to install one end and then change the position to install the other end, thereby improving the installation efficiency and installation quality.

[0007] Preferably, sliding sleeves are fixed at both ends of the upper press -fitting seat and slidably arranged on the guide columns, and a limiting part and a washer are arranged on the top of the guide column for limiting.

[0008] The above structure design facilitates the accurate up-down movement of the upper press -fitting seat, and improves the press -fitting stability and press -fitting precision.

[0009] Preferably, the guide post is provided with a spring, and the upper and lower ends of the spring abut against the sliding sleeve and the base respectively.

[0010] With the above structure, the spring in the middle part can automatically restore the upper press-fitting seat to be separated after the press-fitting is completed.

[0011] Preferably, the camshaft bearing two-way press-fitting tool further comprises a limiting assembly for limiting the camshaft and the bearings at both ends, and the limiting assembly comprises:

[0012] A lower bearing limiting piece in a semicircular arc structure is fixedly arranged on the lower bearing press-fitting head to limit the pre-installed bearing at the lower end;

[0013] A camshaft limiting piece comprises a mounting plate fixedly arranged on the base and a limiting plate transversely arranged on the mounting plate, and the limiting plate is provided with a first limiting gap matched with the air inlet convex on the camshaft;

[0014] An upper bearing limiting piece is fixedly arranged on the upper press-fitting seat, and the upper bearing limiting piece is provided with a second limiting gap corresponding to the bearing at the upper end to limit the pre-installed bearing.

[0015] With the above structure, the limiting assembly arranged on one side of the camshaft and the bearings at both ends can stabilize and limit during the pre-installation and press-fitting, thereby ensuring the press-fitting precision of the bearings and preventing the bearings from being skewed.

[0016] Preferably, the lower bearing press-fitting head comprises a fixed part and a lower press-fitting part, the fixed part is fixedly arranged on the base, the lower press-fitting part is arranged on the fixed part in a threaded connection mode, and the lower press-fitting part is provided with a lower press-fitting hole for installing the lower bearing.

[0017] With the above structure, the lower press-fitting part is designed to be detachable, thereby different lower press-fitting parts can be selected for press-fitting according to different product models, improving the universality of the tool, and the lower press-fitting hole of the lower press-fitting part can facilitate the pre-installation of the bearing at the lower end and the camshaft.

[0018] Preferably, the diameter of the lower press-fitting hole is 1-2mm larger than the outer diameter of the bearing at the lower end.

[0019] Preferably, the upper bearing press-fitting head is detachably arranged on the upper press-fitting seat.

[0020] To achieve the above object, the utility model further provides technical schemes:

[0021] A camshaft bearing bidirectional press equipment, including the camshaft bearing bidirectional press equipment, and the machining platform of lower end of the equipment is matched with the machining station of press machine, the upper press seat is fixedly connected with the driving mechanism of press machine to drive the upper press seat to move downward and complete the press of the bearings at both ends of the camshaft.

[0022] Compared with the prior art, the camshaft bearing bidirectional press equipment has the following beneficial effects:

[0023] 1. The camshaft bearing bidirectional press equipment can preinstall the bearings at both ends of the camshaft on the press equipment, then drive the upper bearing press head to move downward by the press machine to complete the press of the bearings at both ends of the camshaft, thereby avoiding the need to install one end and then change the position to install the other end, improving the installation efficiency and installation quality.

[0024] 2. The camshaft bearing bidirectional press equipment is provided with a limiting assembly on one side of the camshaft and the bearings at both ends, which can play a stabilizing and limiting role during preinstallation and press, thereby ensuring the press accuracy of the bearings and preventing the bearings from being skewed.

[0025] 3. The lower press part of the lower bearing press head and the upper bearing press head in the camshaft bearing bidirectional press equipment are detachably arranged on the upper press seat, thereby allowing different lower press parts and upper bearing press heads to be selected for press according to different product models, improving the versatility of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic view of the camshaft bearing bidirectional press equipment;

[0027] Figure 2 is Figure 1 a structural schematic view of the camshaft bearing bidirectional press equipment after removing the camshaft and the bearings.

[0028] In the drawings:

[0029] machining platform 1, base 2, lower bearing press head 3, fixed part 3a, lower press part 3b, lower press hole 3c, guide column 4, limiting part 4a, washer 4b, upper press seat 5, sliding sleeve 5a, upper bearing press head 6, spring 7, lower bearing limiting part 8a, camshaft limiting part 8b, mounting plate 81b, limiting plate 82b, first limiting gap 83b, upper bearing limiting part 8c, second limiting gap 81c, camshaft 100, intake cam 110, bearing 200. DETAILED DESCRIPTION

[0030] To explain the technical content, structural features, purposes and effects of the camshaft bearing bidirectional press equipment in detail, the following will be described in detail in combination with the embodiments and the drawings.

[0031] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on 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. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Please see Figure 1 and Figure 2 A bidirectional press-fitting fixture for camshaft bearings is disclosed, used for press-fitting bearings 200 at both ends of a camshaft 100. The fixture includes a processing platform 1 with a base 2 on it. A lower bearing press-fitting head 3 for fixing the bearing 200 is mounted on the base 2. Guide posts 4 are located at both ends of the base 2, and upper press-fitting seats 5 are slidably mounted on the guide posts 4. The upper end of the upper press-fitting seat 5 is fixedly connected to a press, and the lower end, corresponding to the lower bearing press-fitting head 3, is provided with an upper bearing press-fitting head 6. This press-fitting fixture, used in conjunction with a press, can be assembled on a camshaft processing production line to achieve assembly-line press-fitting, thereby improving the press-fitting efficiency of bearings.

[0033] The specific structure of the bidirectional press-fitting equipment for camshaft bearings is as follows:

[0034] The upper press base 5 has sliding sleeves 5a fixed at both ends, and the sliding sleeves 5a are slidably mounted on the guide post 4. The top of the guide post 4 is provided with a limiting part 4a and a washer 4b for limiting. The guide post 4 is fitted with a spring 7, and the upper and lower ends of the spring 7 abut against the sliding sleeve 5a and the base 2, respectively.

[0035] Furthermore, the bidirectional press-fitting fixture for the camshaft bearing also includes a limiting component to limit the camshaft 100 and the bearings 200 at both ends. This limiting component includes:

[0036] The lower bearing limiting member 8a has a semi-circular arc structure and is fixedly installed on the lower bearing press head 3 to limit the bearing 200 pre-installed at the lower end;

[0037] The camshaft limiting component 8b includes a mounting plate 81b fixedly mounted on the base 2 and a limiting plate 82b horizontally mounted on the mounting plate 81b. The limiting plate 82b has a first limiting notch 83b that is adapted to the air intake protrusion 110 on the camshaft 100.

[0038] The upper bearing limiting component 8c is fixedly installed on the upper press base 5, and the upper bearing limiting component 8c has a second limiting notch 81c corresponding to the upper bearing 200 to limit the pre-installed bearing 200.

[0039] In this invention, the limiting component can ensure the precise installation of the camshaft and the bearings at both ends during pre-installation, and at the same time, it can ensure that the bearings at both ends will not shift during installation, thereby improving the pressing quality.

[0040] Furthermore, the lower bearing press-fit head 3 includes a fixing part 3a and a lower press-fit part 3b. The fixing part 3a is fixedly mounted on the base 2, and the lower press-fit part 3b is mounted on the fixing part 3a by a threaded connection. The lower press-fit part 3b has a lower press-fit hole 3c for mounting the lower bearing 200. The upper bearing press-fit head 6 is detachably mounted on the upper press-fit base 5. The detachable design of the lower press-fit part 3b and the upper bearing press-fit head 6 in this invention allows for replacement according to different product models, improving the versatility of the tooling.

[0041] In this embodiment, the diameter of the lower press-fit hole 3c is 1-2 mm larger than the outer diameter of the lower bearing 200, which ensures that there will be no offset when the bearings at the upper and lower ends are press-fitted.

[0042] This utility model also provides a bidirectional press-fitting device for camshaft bearings, including the aforementioned bidirectional press-fitting fixture for camshaft bearings, wherein the processing platform 1 at the lower end of the fixture is installed and matched with the processing station of the press, and the upper press-fitting seat 5 is fixedly connected to the drive mechanism of the press, driving the upper press-fitting seat 5 to move downward and simultaneously completing the press-fitting of the bearings 200 at both ends of the camshaft 100.

[0043] The working principle of this utility model is as follows:

[0044] When using this press-fitting fixture to press-fit the bearings at both ends of the camshaft, firstly, the fixture can be installed in conjunction with a press. The processing platform 1 is fixed on the press or the press-fitting production line, and the upper press-fitting seat 5 is fixedly connected to the press. Then, a suitable lower press-fitting part 3b and an upper bearing press-fitting head 6 are selected, and the lower bearings 200 at the upper and lower ends are installed in the lower press-fitting hole 3c. At the same time, the camshaft 100 is installed for pre-installation. The upper bearing 200 is pre-installed, and the pre-installed upper and lower bearings 200 are tightly fitted and limited with the upper bearing limiting part 8c and the lower bearing limiting part 8a, respectively. The intake protrusion 110 on the camshaft 100 is fitted and limited with the first limiting notch 83b. Then, the pre-installed camshaft and bearings are limited and fixed by the limiting components. After the camshaft 100 and the pre-installed bearings 200 at both ends are pre-installed, the press drives the upper pressing seat 5 to move downwards. The upper bearing 200 enters the upper pressing hole 6a to begin pressing. As the press continues to move downwards, the bearings 200 at both ends of the camshaft 100 are pressed simultaneously. The pressing is completed after the press has traveled the set pressing stroke distance. This invention can achieve bidirectional pressing of bearings at both ends of the camshaft in one operation, and the limiting components ensure pressing accuracy. Therefore, this fixture has the advantages of high pressing efficiency and high pressing accuracy.

[0045] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A bidirectional press-fitting fixture for camshaft bearings, used for press-fitting bearings (200) at both ends of a camshaft (100), characterized in that, The bidirectional press-fitting fixture for the camshaft bearing includes a processing platform (1), a base (2) on the processing platform (1), a lower bearing press-fitting head (3) for fixing the bearing (200) on the base (2), guide posts (4) at both ends of the base (2), and an upper press-fitting seat (5) slidably mounted on the guide posts (4). The upper end of the upper press-fitting seat (5) is fixedly connected to the press, and the lower end is provided with an upper bearing press-fitting head (6) corresponding to the lower bearing press-fitting head (3). It also includes a limiting assembly for limiting the camshaft (100) and the bearings (200) at both ends, the limiting assembly comprising: The lower bearing limiting component (8a) has a semi-circular arc structure and is fixedly installed on the lower bearing press head (3) to limit the bearing (200) pre-installed at the lower end; The camshaft limiting component (8b) includes a mounting plate (81b) fixedly mounted on the base (2) and a limiting plate (82b) horizontally mounted on the mounting plate (81b). The limiting plate (82b) has a first limiting notch (83b) that is adapted to the intake protrusion (110) on the camshaft (100). The upper bearing limiting component (8c) is fixedly installed on the upper press base (5), and the upper bearing limiting component (8c) has a second limiting notch (81c) corresponding to the upper bearing (200) to limit the pre-installed bearing (200).

2. The bidirectional press-fitting fixture for camshaft bearings as described in claim 1, characterized in that, The upper press base (5) is fixed with sliding sleeves (5a) at both ends, and the sliding sleeves (5a) are slidably mounted on the guide post (4). The top of the guide post (4) is provided with a limiting part (4a) and a washer (4b) for limiting.

3. The bidirectional press-fitting fixture for camshaft bearings as described in claim 2, characterized in that, The guide post (4) is fitted with a spring (7), and the upper and lower ends of the spring (7) abut against the sliding sleeve (5a) and the base (2) respectively.

4. The bidirectional press-fitting fixture for camshaft bearings as described in claim 1, characterized in that, The lower bearing press head (3) includes a fixed part (3a) and a lower press part (3b). The fixed part (3a) is fixedly mounted on the base (2). The lower press part (3b) is mounted on the fixed part (3a) by means of threaded connection. The lower press part (3b) is provided with a lower press hole (3c) for mounting the lower bearing (200).

5. The bidirectional press-fitting fixture for camshaft bearings as described in claim 4, characterized in that, The diameter of the lower press hole (3c) is 1-2 mm larger than the outer diameter of the lower bearing (200).

6. The bidirectional press-fitting fixture for camshaft bearings as described in claim 1, characterized in that, The upper bearing press head (6) is detachably mounted on the upper press seat (5).

7. A bidirectional press-fitting device for camshaft bearings, characterized in that, The tooling includes the bidirectional press-fitting fixture for camshaft bearings as described in any one of claims 1-6, wherein the processing platform (1) at the lower end of the tooling is installed and matched with the processing station of the press, and the upper press-fitting seat (5) is fixedly connected to the drive mechanism of the press to drive the upper press-fitting seat (5) to move downward and simultaneously complete the press-fitting of the bearings (200) at both ends of the camshaft (100).

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