Rapid clamping tool for countersunk bolt

Abstract

The utility model provides a countersunk bolt quick clamping tool which comprises a main body column and a clamping part, the clamping part is arranged at one end of the main body column, a countersunk head groove and a screw rod groove are formed in the clamping part, the countersunk head groove and the screw rod groove are downwards formed from the upper end of the clamping part, the screw rod groove is located on the outer side of the countersunk head groove, and the screw rod groove is communicated with the countersunk head groove and the outside. And deformation grooves are formed in the main body column and the clamping part, are formed from the end part of the clamping part to the other end of the main body column, and pass through the space between the countersunk head groove and the screw rod groove. The rapid clamping tool for the countersunk bolt can rapidly clamp the countersunk bolt, can be suitable for countersunk bolts of different sizes, has a good clamping and fixing effect, is simple in structure and convenient to manufacture, and can reduce the machining and manufacturing cost of the countersunk bolt and improve the machining efficiency.

Description

Technical Field

[0001] The utility model belongs to the field of bolt processing fixtures, and particularly relates to a countersunk bolt quick clamping tool. Background Art

[0002] Bolts, as a basic connecting part, are widely used in the connection of various machines. In the field of aerospace, due to the gas dynamics requirements and the precision requirements of parts assembly during flight, countersunk bolts are usually used as connecting parts when connecting aerospace equipment. The reason is that after the countersunk bolt is installed, its head will remain flush with the connection end face. In high-precision technical fields such as aerospace, higher precision requirements are placed on countersunk bolts. It is necessary to ensure both the reliability of the connection and the interchangeability between the bolts. Therefore, the processing accuracy requirements for countersunk bolts are also increased. Traditional countersunk bolt processing fixtures have many operating steps and large amplitudes when clamping countersunk bolts. Not only is the processing efficiency low, but it is also difficult to ensure that the processing accuracy meets the requirements. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a countersunk bolt quick clamping tool, which utilizes the elasticity of the tool to achieve quick clamping of the countersunk bolt, thereby processing the countersunk bolt.

[0004] A quick clamping tool for countersunk bolts includes a main column and a clamping portion. The clamping portion is disposed at one end of the main column and is provided with a countersunk groove and a screw groove. The countersunk groove and the screw groove extend downward from the upper end of the clamping portion. The countersunk groove is used to accommodate the countersunk portion of the countersunk bolt, and the screw groove is used to clamp the screw portion of the countersunk bolt. The screw groove is located outside the countersunk groove, connecting the countersunk groove with the outside. When the countersunk bolt is located within the countersunk groove and the screw groove, the screw portion of the countersunk bolt is located outside the clamping tool, facilitating machining of the screw portion. To achieve the clamping function for the countersunk bolt, deformation grooves are provided in the main column and the clamping portion. The deformation groove extends from the end of the clamping portion toward the other end of the main column and passes between the countersunk groove and the screw groove. The addition of the deformation groove allows the clamping tool to deform to a certain extent, thereby expanding and contracting the countersunk groove and the deformation groove to accommodate countersunk bolts of different sizes.

[0005] To extend the life of the clamping tool, a stress-relieving groove is installed on the main column. The groove runs through the upper and lower surfaces of the main column and has arc-shaped ends, connecting the groove to the end of the deformation groove. When the clamping tool deforms, the stress-relieving groove prevents stress from concentrating at the end of the deformation groove, thus preventing breakage at this stress concentration point after prolonged use.

[0006] In order to facilitate the processing of the countersunk bolt, the shape of the clamping portion is set to be a truncated cone.

[0007] In order to ensure the angle of the countersunk bolt when clamping, the bottom of the countersunk groove and the screw groove are semicircular, and the bottom of the countersunk groove and the screw groove are coaxial with the clamping part, so that the countersunk bolt can be located on the axis of the clamping tool.

[0008] In order to facilitate the clamping of the countersunk bolt, an operating surface is opened on the upper end of the clamping part, which is convenient for clamping the countersunk bolt into the countersunk groove and the screw groove.

[0009] The utility model provides a quick clamping tool for countersunk bolts, which can quickly clamp countersunk bolts and is suitable for countersunk bolts of different sizes. It has a good clamping and fixing effect, a simple structure, and is easy to manufacture. It can reduce the processing and manufacturing costs of countersunk bolts and improve processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be described in further detail below with reference to the accompanying drawings.

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the top view of the structure of the utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the utility model in use state;

[0014] As shown in the figure: 1-main column; 2-clamping part; 3-countersunk groove; 4-screw groove; 5-deformation groove; 6-unloading groove; 7-operating surface. DETAILED DESCRIPTION

[0015] To further illustrate the concept of the present invention, the following will further describe the specific implementation of the present invention with reference to the accompanying drawings:

[0016] A countersunk bolt quick clamping tool includes a main column 1 and a clamping part 2. A cylindrical material is taken, one end of which is used as the clamping part 2 and the other end as the main column 1. The end of the clamping part 2 is milled to form a truncated cone shape. Milling is performed from the upper end of the clamping part 2 downwards to open a countersunk groove 3 and a screw groove 4 on the clamping part 2, so that the bottom of the countersunk groove 3 and the screw groove 4 form a semicircle and are coaxial with the clamping part 2. Then the upper end of the clamping part 2 is cut and the upper end of the clamping part 2 is flattened to form an operating surface 7. Then a groove is opened from one end of the clamping part 2 toward the main column 1, and the groove position starts from the middle of the end face of the clamping part 2 and ends at the middle of the main column 1 to form a deformation groove 5. Then a force unloading groove 6 is opened from the top of the main column 1, and the force unloading groove 6 is connected to the deformation groove 5 so that the two ends of the force unloading groove 6 form an arc shape and pass through the main column 1, thereby completing the production of the clamping tool. Figure 1 、 Figure 2 shown.

[0017] When processing a countersunk bolt, align the countersunk part of the countersunk bolt with the countersunk groove 3, align the screw part with the screw groove 4, and then press the countersunk bolt downward to clamp the countersunk bolt into the bottom of the countersunk groove 3 and the screw groove 4. During the clamping process, due to the existence of the deformation groove 5, the countersunk groove 3 and the screw groove 4 will produce a certain amount of deformation, allowing the countersunk bolt to be clamped smoothly. Figure 3 After clamping, the clamping tool is fixed to the lathe chuck. The chuck holds the clamping tool, allowing the clamping tool to further clamp the countersunk bolt, and then the countersunk bolt can be processed. After processing, the countersunk bolt can be easily removed by slightly loosening the deformation groove 5.

[0018] Compared with traditional clamp bolts, the clamping and removal of traditional clamps require the clamp to be loosened to a large extent. The clamping tool provided by the utility model only needs to be slightly loosened to directly load and remove the product from the side notch, saving the time of changing products and effectively improving the processing efficiency of countersunk bolts.

[0019] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various changes and variations are possible. Any modifications, equivalent replacements, improvements, etc. made using the present invention should be included in the scope of protection of the present invention.

Claims

1. A countersunk bolt quick clamping tool, comprising a main column (1) and a clamping portion (2), wherein the clamping portion (2) is arranged at one end of the main column (1), and is characterized in that: The clamping portion (2) is provided with a countersunk groove (3) and a screw groove (4), the countersunk groove (3) and the screw groove (4) are opened downward from the upper end of the clamping portion (2), the screw groove (4) is located outside the countersunk groove (3), and the screw groove (4) communicates with the countersunk groove (3) and the outside; a deformation groove (5) is opened on the main column (1) and the clamping portion (2), the deformation groove (5) is opened from the end of the clamping portion (2) to the other end of the main column (1), and the deformation groove (5) passes between the countersunk groove (3) and the screw groove (4).

2. The countersunk bolt quick clamping tool according to claim 1, characterized in that: The main column (1) is provided with a force unloading groove (6), which passes through the upper and lower surfaces of the main column (1), and the two ends of the force unloading groove (6) are arc-shaped, and the force unloading groove (6) is connected to the end of the deformation groove (5).

3. The countersunk bolt quick clamping tool according to claim 2, characterized in that: The clamping portion (2) is in the shape of a truncated cone.

4. The countersunk bolt quick clamping tool according to claim 3, characterized in that: The bottoms of the countersunk groove (3) and the screw groove (4) are semicircular, and the bottoms of the countersunk groove (3) and the screw groove (4) are coaxial with the clamping portion (2).

5. The countersunk bolt quick clamping tool according to claim 4, characterized in that: An operating surface (7) is formed at the upper end of the clamping portion (2).

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