A self-throwing high-strength bolt

Abstract

The utility model belongs to bolt technical field especially is a kind of high-strength bolt of self- chip removal, including bolt head, the bottom fixedly connected with shank of bolt head, the surface of shank is equipped with chip removal groove, chip removal groove uses asymmetric design, one end of shank is fixedly connected with alloy head, alloy head adopts hard alloy sintering formation. Chip removal groove on the surface of shank is designed by asymmetric flow guide, forms chip directional discharge channel when bolt is screwed in, in combination with the rotary cutting effect of spiral cutting tool in chip removal port, can crush large chip and discharge along the axial direction, avoid the problem of jamming or thread damage caused by the accumulation of debris of traditional bolt, bolt head, shank and alloy head internal through-type chip removal port, cooperate spiral cutting tool to form cutting, flow guide, discharge integrated process, further improve the chip removal efficiency, alloy head adopts hard alloy sintering formation, improve the strength of bolt, reduce the wear of bolt head, improve the service life of bolt.

Description

Technical Field

[0001] This utility model belongs to the field of bolt technology, specifically relating to a high-strength bolt with self-chip removal. Background Technology

[0002] Bolt: A mechanical part, a cylindrical threaded fastener fitted with a nut. It consists of a head and a shank (a cylinder with external threads), and is used to fasten two parts with through holes. This type of connection is called a bolted connection. Since the two parts can be separated by unscrewing the nut, a bolted connection is a detachable connection.

[0003] Existing bolts rely on a single chip removal groove for chip removal, which has limited effectiveness and cannot handle high-strength materials. Larger chips may fail to be removed, leading to jamming or thread damage due to chip accumulation, thus affecting the bolt's service life. During tightening, the bolt head experiences the most friction, making it prone to wear and impacting bolt strength. Utility Model Content

[0004] To address the problems mentioned in the background art, this utility model provides a high-strength bolt with self-draining chip removal, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-strength bolt with self-draining chip removal, comprising a bolt head, a bolt body fixedly connected to the bottom of the bolt head, a chip removal groove formed on the surface of the bolt body, the chip removal groove being asymmetrically designed, and an alloy head fixedly connected to one end of the bolt body, the alloy head being formed by sintering hard alloy.

[0006] Preferably, the bolt head, bolt body, and alloy head are all provided with chip discharge ports, and the inner surface of the chip discharge ports is connected to a spiral cutting tool.

[0007] Preferably, the chip removal grooves are arranged in a spiral array along the surface of the bolt body, and the spacing between adjacent chip removal grooves gradually increases from the alloy head towards the bolt head.

[0008] Preferably, the bolt head, bolt body, and alloy head are connected in an integrated manner.

[0009] Preferably, the cross-section of the chip removal groove is a tapered V-shaped structure, with the groove wall on the side near the alloy head having an inclination angle of 20 to 25 degrees and the groove wall on the other side having an inclination angle of 5 to 10 degrees, forming an asymmetrical flow channel.

[0010] Preferably, the spiral cutting tool is made of tungsten steel.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The chip removal grooves on the bolt body surface, through an asymmetric flow guiding design, form a directional chip discharge channel when the bolt is screwed in. Combined with the rotating cutting action of the spiral cutting blade inside the chip removal port, large chips can be crushed and discharged axially, avoiding the jamming or thread damage problems caused by chip accumulation in traditional bolts. The through-type chip removal ports inside the bolt head, bolt body, and alloy head, together with the spiral cutting blade, form an integrated process of cutting, guiding, and discharging, achieving dynamic chip removal without the need for an additional power unit, further improving chip removal efficiency. The alloy head is made of hard alloy sintering, which improves the strength of the bolt, reduces wear on the bolt head, and extends the service life of the bolt. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a first three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a cross-sectional view of the present invention;

[0016] Figure 3 This is a second three-dimensional structural diagram of the present invention.

[0017] In the diagram: 1. Bolt head; 2. Bolt body; 3. Chip removal groove; 4. Alloy head; 5. Spiral cutting tool; 6. Chip removal port. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3 The present invention provides the following technical solution: a high-strength bolt with self-draining chip removal, including a bolt head 1, a bolt body 2 fixedly connected to the bottom of the bolt head 1, a chip removal groove 3 opened on the surface of the bolt body 2, the chip removal groove 3 adopts an asymmetrical design, and an alloy head 4 fixedly connected to one end of the bolt body 2, the alloy head 4 being formed by hard alloy sintering.

[0020] The bolt head 1, bolt body 2 and alloy head 4 are all provided with chip discharge ports 6, and the inner surface of the chip discharge ports 6 is connected to a spiral cutting tool 5.

[0021] The chip removal grooves 3 are arranged in a spiral array along the surface of the bolt body 2, and the spacing between adjacent chip removal grooves 3 gradually increases from the alloy head 4 towards the bolt head 1.

[0022] The bolt head 1, bolt body 2, and alloy head 4 are connected in an integrated manner.

[0023] The cross-section of the chip removal groove 3 is a tapered V-shaped structure. The inclination angle of the groove wall on the side near the alloy head 4 is 20 to 25 degrees, and the inclination angle of the groove wall on the other side is 5 to 10 degrees, forming an asymmetrical flow channel.

[0024] The spiral cutting tool 5 is made of tungsten steel.

[0025] In this embodiment: Tungsten steel has higher strength, which facilitates the cutting of metal by the spiral cutting blade 5, effectively removes long strips of iron chips, prevents thread engagement failure, and the spiral cutting blade 5 has higher strength and is less prone to wear, thus improving cutting efficiency.

[0026] In this embodiment, a directional flow effect is formed by the difference in tilt angle. When the bolt is screwed in, the rotational force is used to push the chips outward along the chip discharge groove 3, avoiding the reverse accumulation of chips and reducing the risk of thread jamming.

[0027] In this embodiment, the alloy head 4 can significantly improve the impact resistance and wear resistance of the bolt tip, making it especially suitable for high-frequency impact scenarios and improving the service life and strength of the bolt.

[0028] In this embodiment, the spiral cutting blade 5 cooperates with the inner wall of the chip discharge port 6, and the large chips are crushed into microparticles by rotational cutting, thereby improving chip discharge efficiency and reducing the probability of channel blockage.

[0029] The working principle and usage process of this utility model are as follows: After the utility model is installed, the bolt head 1 is turned by wrench, which drives the bolt body 2 and the alloy head 4 to rotate, thereby driving the spiral cutting tool 5 to rotate. The alloy head 4 has higher strength and can reduce wear. During the rotation of the bolt, some chips will continuously move outward along the chip discharge groove 3, while the other part of the chips that directly contact the alloy head 4 will be cut by the spiral cutting tool 5 and move outward along the rotation of the spiral cutting tool 5, and finally be discharged from the chip discharge port 6.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-strength bolt with self-discharging chip removal, comprising a bolt head (1), characterized in that: The bottom of the bolt head (1) is fixedly connected to the bolt body (2), and the surface of the bolt body (2) is provided with a chip removal groove (3). The chip removal groove (3) adopts an asymmetrical design. One end of the bolt body (2) is fixedly connected to an alloy head (4), which is formed by hard alloy sintering.

2. The high-strength bolt with self-discharging chip removal according to claim 1, characterized in that: The plug head (1), plug body (2) and alloy head (4) are all provided with chip discharge ports (6), and the inner surface of the chip discharge ports (6) is connected to a spiral cutting tool (5).

3. A high-strength bolt with self-discharging chip removal according to claim 1 or 2, characterized in that: The chip removal grooves (3) are arranged in a spiral array along the surface of the bolt body (2), and the spacing between adjacent chip removal grooves (3) gradually increases from the alloy head (4) towards the bolt head (1).

4. A high-strength bolt with self-discharging chip removal according to claim 1, characterized in that: The bolt head (1), bolt body (2) and alloy head (4) are connected in an integrated manner.

5. A high-strength bolt with self-discharging chip removal according to claim 1, characterized in that: The cross-section of the chip removal groove (3) is a tapered V-shaped structure. The inclination angle of the groove wall on the side closest to the alloy head (4) is 20 to 25 degrees, and the inclination angle of the groove wall on the other side is 5 to 10 degrees, forming an asymmetrical flow channel.

6. A high-strength bolt with self-discharging chip removal according to claim 2, characterized in that: The spiral cutting tool (5) is made of tungsten steel.

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