A camshaft rotation tool for accurate timing

Abstract

A camshaft rotation fixture for accurate timing is disclosed, belonging to the field of automotive engine technology. The camshaft rotation fixture is a cylindrical sleeve structure with a square hole inside. A locating pin is located within the fixture. One end of the camshaft has a U-shaped groove that matches the locating pin. The camshaft rotation fixture is fixed by inserting the locating pin into the U-shaped groove. A camshaft stop structure is provided on the camshaft, and the camshaft stop fixture works in conjunction with this structure. The camshaft stop fixture is mounted on the cylinder head. This camshaft rotation fixture of the present invention has many beneficial effects, and is of great significance for improving automotive engine assembly efficiency, simplifying the assembly process, enhancing assembly stability, increasing assembly flexibility, and promoting technological innovation.

Description

Technical Field

[0001] This utility model belongs to the field of automotive engine technology, specifically a camshaft rotation tool for accurate timing alignment. Background Technology

[0002] Tightening the phaser bolts is a crucial step in the assembly of an automotive engine. To ensure the bolt tightening accuracy and normal engine operation, a locking fixture is typically used to clamp the hexagonal portion of the camshaft to restrict its rotation. However, when using traditional tooling methods for alignment, the angle between the hexagonal portion of the camshaft and the camshaft needs to be specially designed to ensure precise fit.

[0003] Furthermore, the width of the stop fixture also needs to be extremely precise to ensure that it can accurately clamp the hexagonal part of the camshaft and effectively restrict the rotation of the camshaft. This precise requirement for the width of the stop fixture not only increases manufacturing costs but also leads to difficulties in the assembly process, thereby reducing assembly efficiency.

[0004] Therefore, in order to solve the problems of difficult assembly and reduced assembly efficiency of stop fixtures, we need to design a new type of camshaft rotation fixture to simplify the assembly process, improve assembly efficiency, and ensure assembly accuracy. Utility Model Content

[0005] To address the problems existing in the background art, this utility model provides a camshaft rotation fixture for accurate timing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a camshaft rotation fixture for accurate timing includes a camshaft stop fixture, a camshaft stop structure, a cylinder head, a camshaft rotation fixture, a camshaft, and a locating pin;

[0007] The camshaft rotating fixture is a cylindrical sleeve structure with a square hole inside. A locating pin is provided inside the camshaft rotating fixture. One end of the camshaft is provided with a U-shaped groove that matches the locating pin. The camshaft rotating fixture is fixed by inserting the locating pin into the U-shaped groove. A camshaft stop structure is provided on the camshaft. The camshaft stop fixture is used in conjunction with the camshaft stop structure. The camshaft stop fixture is installed on the cylinder head.

[0008] The camshaft stop fixture has a groove that matches the shape of the camshaft stop structure, which can effectively restrict the camshaft from rotating around the axis when they are engaged.

[0009] The camshaft rotation fixture can be rotated with the corresponding assembly wrench to adjust the camshaft angle, so that the camshaft stop structure and the groove angle of the camshaft stop fixture are consistent, thus realizing the quick assembly and mating of the two.

[0010] The positioning pin is fixedly connected to the inside of the camshaft rotating tooling sleeve, and its size is adapted to the U-shaped groove at the front end of the camshaft, ensuring a stable connection between the camshaft rotating tooling and the camshaft.

[0011] The camshaft stop fixture is detachably connected to the camshaft stop structure, and the camshaft rotation fixture is detachably connected to the camshaft.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. Improved assembly efficiency: By designing a special camshaft rotation fixture, the angle of the camshaft can be quickly adjusted when assembling the stop fixture, enabling rapid and accurate assembly of the stop fixture. This improvement significantly shortens assembly time and increases production efficiency.

[0014] 2. Simplified assembly process: The tooling adopts a cylindrical sleeve structure with a square hole for assembling the wrench. The sleeve is equipped with a locating pin that mates with the U-shaped groove at the front end of the camshaft. This design simplifies the assembly steps, reduces the assembly difficulty, and allows the operator to complete the assembly work more easily and accurately.

[0015] 3. Enhanced assembly stability: The locating pin is fixedly connected to the inside of the camshaft rotating tooling sleeve, and its size is adapted to the U-shaped groove at the front end of the camshaft, ensuring a stable connection between the tooling and the camshaft. This stable connection method helps to avoid problems such as shaking or misalignment during assembly, thereby improving the accuracy and reliability of assembly.

[0016] 4. Improved assembly flexibility: The camshaft stop tooling and the camshaft stop structure, as well as the camshaft rotating tooling and the camshaft, are all detachable connections. This design not only facilitates the installation and disassembly of the tooling, but also helps to make flexible adjustments according to the assembly requirements of different vehicle models or different engine models, thus improving the versatility and adaptability of the tooling.

[0017] 5. Promoting Technological Innovation: This utility model's camshaft rotation fixture not only solves the problems existing in the prior art, but also provides new ideas and methods for technological innovation in the field of automotive engine assembly. This innovative achievement helps to promote the development and progress of the entire industry.

[0018] In summary, the camshaft rotation fixture of this invention has many beneficial effects, and is of great significance for improving the assembly efficiency of automobile engines, simplifying the assembly process, enhancing assembly stability, improving assembly flexibility, and promoting technological innovation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the camshaft stop tooling assembly of this utility model;

[0020] Figure 2 This is a schematic diagram of the camshaft rotation tooling assembly of this utility model;

[0021] Figure 3 These are the front view, rear view, and isometric view of the camshaft rotation fixture of this utility model. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0023] This embodiment describes a camshaft rotation fixture for accurate timing, including a camshaft stop fixture 1, a camshaft stop structure 2, a cylinder head 3, a camshaft rotation fixture 4, a camshaft 5, and a locating pin 6.

[0024] The camshaft rotating fixture 4 is a cylindrical sleeve structure. The camshaft rotating fixture 4 has a square hole inside and a positioning pin 6 inside. One end of the camshaft 5 has a U-shaped groove that matches the positioning pin 6. The camshaft rotating fixture 4 is fixed by inserting the positioning pin 6 into the U-shaped groove. The camshaft 5 is provided with a camshaft stop structure 2. The camshaft stop fixture 1 is used in conjunction with the camshaft stop structure 2. The camshaft stop fixture 1 is installed on the cylinder head 3.

[0025] The camshaft stop fixture 1 has a groove that matches the shape of the camshaft stop structure 2, which can effectively restrict the rotation of the camshaft 5 around the axis when they are engaged.

[0026] The camshaft rotating fixture 4 can be rotated with the corresponding assembly wrench to adjust the angle of the camshaft 5, so that the camshaft stop structure 2 and the groove angle of the camshaft stop fixture 1 are consistent, thus realizing the quick assembly and mating of the two.

[0027] The positioning pin 6 is fixedly connected to the inside of the sleeve of the camshaft rotating tool 4, and its size is adapted to the U-shaped groove at the front end of the camshaft 5, ensuring a stable connection between the camshaft rotating tool 4 and the camshaft 5.

[0028] The camshaft stop fixture 1 is detachably connected to the camshaft stop structure 2, and the camshaft rotation fixture 4 is detachably connected to the camshaft 5.

[0029] During assembly, the camshaft rotating fixture 4 is first installed on the front end of the camshaft 5, ensuring that the locating pin 6 is correctly engaged with the U-shaped groove at the front end of the camshaft 5. At this time, the operator can rotate the fixture using the wrench installed in the square hole of the camshaft rotating fixture 4. Since the camshaft rotating fixture 4 and the camshaft 5 are securely connected by the locating pin 6 and the U-shaped groove, the rotating fixture will directly drive the camshaft 5 to rotate. As the camshaft 5 rotates, the angle of the camshaft stop structure 2 set on it will also change accordingly. The operator needs to continue rotating the camshaft 5 until the angle of the camshaft stop structure 2 is completely consistent with the angle of the groove opened on the camshaft stop fixture 1. At this time, the camshaft stop fixture 1 can be smoothly assembled onto the camshaft stop structure 2, and the groove effectively restricts the rotation of the camshaft 5 around the axis, thus completing the entire assembly process. It is worth noting that the camshaft stop fixture 1 and the camshaft stop structure 2, as well as the camshaft rotating fixture 4 and the camshaft 5, are detachable connections. This design not only facilitates the installation and disassembly of tooling, but also helps to improve the flexibility and efficiency of assembly.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A camshaft rotation fixture for accurate timing, characterized in that: It includes a camshaft stop fixture (1), a camshaft stop structure (2), a cylinder head (3), a camshaft rotation fixture (4), a camshaft (5), and a locating pin (6); The camshaft rotating fixture (4) is a cylindrical sleeve structure. The camshaft rotating fixture (4) has a square hole inside and a positioning pin (6) inside. One end of the camshaft (5) has a U-shaped groove that matches the positioning pin (6). The camshaft rotating fixture (4) is fixed by inserting the positioning pin (6) into the U-shaped groove. The camshaft (5) has a camshaft stop structure (2). The camshaft stop fixture (1) works in conjunction with the camshaft stop structure (2). The camshaft stop fixture (1) is installed on the cylinder head (3).

2. The camshaft rotation fixture for accurate timing as described in claim 1, characterized in that: The camshaft stop fixture (1) has a groove that matches the shape of the camshaft stop structure (2), which can effectively restrict the camshaft (5) from rotating around the axis when they are engaged.

3. The camshaft rotation fixture for accurate timing as described in claim 1, characterized in that: The camshaft rotating fixture (4) can be rotated with the corresponding assembly wrench to adjust the angle of the camshaft (5) so that the camshaft stop structure (2) and the camshaft stop fixture (1) have the same groove angle, thus achieving rapid assembly and mating of the two.

4. The camshaft rotation fixture for accurate timing as described in claim 1, characterized in that: The positioning pin (6) is fixedly connected to the inside of the sleeve of the camshaft rotating fixture (4), and its size is adapted to the U-shaped groove at the front end of the camshaft (5), ensuring a stable connection between the camshaft rotating fixture (4) and the camshaft (5).

5. The camshaft rotation fixture for accurate timing as described in claim 1, characterized in that: The camshaft stop fixture (1) is detachably connected to the camshaft stop structure (2), and the camshaft rotation fixture (4) is detachably connected to the camshaft (5).

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