A laser laser anti-skid tooth single-head double-head cross head

Abstract

The utility model relates to mechanical assembly technical field especially relates to a laser laser anti -skid tooth single -end double -end cross head. Including head body, the head body is strip -shaped pole, and the front end is provided with cross -shaped notched structure, the cross -shaped notched structure is by multiple blade petal of radial symmetry arrangement constitutes, the contact area of blade petal top is provided with the anti -skid tooth pattern formed by laser etching, the anti -skid tooth pattern is a plurality of linear concaves of parallel arrangement along blade petal center line, and the arrangement direction of anti -skid tooth pattern keeps consistent with the screwing -in direction of head body. The utility model solves the technical problem that: traditional cross head is difficult to take into account between the anti -skid performance and structural strength, and is easy to appear skidding, tooth skipping and other problems, influences operation stability and service life.

Description

Technical Field

[0001] This utility model relates to the field of mechanical assembly technology, and in particular to a laser-etched anti-slip tooth single-headed double-headed cross-shaped screwdriver bit. Background Technology

[0002] Screwdriver bits typically refer to the screwdriver heads that are mounted on electric drills or hammer drills for tightening screws. They are generally made of metal and have a certain degree of strength and wear resistance. Structurally, they are usually designed to be detachable and modular, so that users can flexibly change the specifications or functional modules according to different usage needs.

[0003] In practical use, especially with rusted screws or fasteners of poor quality, existing Phillips head screwdriver bits often slip or skip teeth due to limited contact area with the screw groove or insufficient friction. This affects work efficiency and can easily damage the screw groove. Traditional improvements involve spraying an anti-slip coating on the surface, which can improve anti-slip performance to some extent, but generally suffers from reduced structural strength, easy surface wear, and high processing costs, making it difficult to achieve a balance between strength and anti-slip performance. Utility Model Content

[0004] The technical problem this invention aims to solve is that traditional Phillips head bits cannot balance anti-slip performance and structural strength, and are prone to slippage, skipped teeth, and other problems, which affect operational stability and service life.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a laser-etched anti-slip tooth single-headed double-headed cross-shaped screwdriver bit, including a bit body, the bit body being in the shape of a strip rod, the front end being provided with a cross-shaped groove structure, the cross-shaped groove structure being composed of multiple radially symmetrically arranged blades, the contact area at the top of the blades being provided with anti-slip teeth formed by laser etching, the anti-slip teeth being several linear concave lines arranged parallel to the center line of the blades, and the arrangement direction of the anti-slip teeth being consistent with the screw-in direction of the bit body.

[0006] As a further improvement of this utility model, the anti-slip serrations cover a length of 3mm-4mm in the front contact area of ​​the top edge of the blade.

[0007] As a further improvement of this utility model, the anti-slip tooth spacing is 0.4-0.6mm and the tooth depth is 0.01-0.03mm.

[0008] As a further improvement of this utility model, the bit body is an integrally formed structure, and the material is set as S2 alloy steel with a hardness value of HRC60±1.

[0009] As a further improvement of this utility model, the blades are symmetrically spaced apart, and the groove depth ranges from 1.5mm to 3.5mm.

[0010] As a further improvement of this utility model, the outer surface of the blade is provided with a hardened layer to enhance surface wear resistance.

[0011] The beneficial effects of this invention are as follows: Laser etching is performed on the working contact area at the top of the Phillips head bit's cutting edge to form parallel anti-slip teeth. This allows the cutting edge to form a micro-engagement with the screw groove when screwed in, significantly enhancing contact friction and rotational stability, and suppressing the common slippage phenomenon during operation. Furthermore, because the tooth structure is formed by high-precision laser processing, etching only the surface area does not affect the overall mechanical properties of the bit, further improving wear resistance and service life. Attached Figure Description

[0012] Figure 1 This is an overall schematic diagram of a laser-etched anti-slip tooth single-headed double-headed cross-shaped screwdriver bit of this utility model;

[0013] Figure 2 This is a partial view of a laser-etched anti-slip tooth single-headed or double-headed Phillips screwdriver bit according to this utility model;

[0014] As shown in the figure: 1. Bit body; 2. Blade; 3. Anti-slip teeth. Detailed Implementation

[0015] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may vary depending on their location and usage; thus, these or other directional terms should not be interpreted as restrictive terms.

[0016] The singular forms “a,” “the,” and “the” used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes one or more of the associated listed items, any or all possible combinations thereof.

[0017] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0018] This utility model provides the following: Figure 1As shown, a laser-etched anti-slip toothed single-headed and double-headed Phillips head screwdriver bit includes a bit body 1. The bit body 1 is a one-piece molded structure, made of S2 alloy steel with a hardness of HRC60±1. After being shaped by CNC machine tools, it undergoes heat treatment (salt bath quenching and tempering) to ensure reliable overall shaping. The bit body 1 is in the shape of a strip rod, with a cross-shaped notch at the front end.

[0019] As attached Figure 2 As shown, the cross-shaped groove structure consists of multiple radially symmetrically arranged cutting edges 2, with symmetrical spacing between them. The groove depth ranges from 1.5mm to 3.5mm, forming an insertion structure that mates with a standard cross screw groove. A hardened layer enhancing surface wear resistance is provided on the outer surface of the cutting edges 2. During laser processing, the cutting edges 2 are subjected to high-temperature radiation, forming a locally hardened layer to enhance surface wear resistance and prevent the teeth from wearing down and failing during long-term use.

[0020] As attached Figure 2 As shown, the contact area at the top of the cutting edge 2 is provided with anti-slip serrations 3 formed by laser etching. The anti-slip serrations 3 are several linear concave lines arranged parallel to the center line of the cutting edge 2, and the arrangement direction of the anti-slip serrations 3 is consistent with the screw-in direction of the bit body 1. The length of the anti-slip serrations 3 covering the front end contact area of ​​the top of the cutting edge 2 ranges from 3mm to 4mm. The spacing of the anti-slip serrations 3 is 0.4-0.6mm, and the tooth depth is 0.01-0.03mm. The anti-slip serrations 3 are etched using an ultraviolet laser with a wavelength of 355nm, a laser power range of 50W to 200W, a scanning speed of 800 to 2000mm / s, and each tooth area is scanned no less than 8 times to ensure tooth uniformity and surface integrity.

[0021] Working Principle: In practical implementation, this invention utilizes laser microstructural processing on the cutting edge 2 area at the front end of the bit body 1. This creates several anti-slip teeth 3 on the top contact area of ​​the cutting edge 2. The anti-slip teeth 3 are precisely etched using a 355nm wavelength laser, with a tooth pitch controlled between 0.4-0.6mm and a tooth depth between 0.01-0.03mm. A precisely controlled scanning method ensures the uniformity and repeatability of the teeth, resulting in a stable anti-slip effect and enhanced anti-slip performance in actual use. The bit body 1 serves as the structural carrier, connected to a screwdriver or power tool, and is rotated by the operator. The cutting edge 2 at its front end inserts into the cross-shaped groove of the corresponding screw, forming an interlocking connection through the mating relationship between the cutting edges 2. Because the top of the cutting edge 2 has several anti-slip teeth 3 arranged along the center line of the cutting edge, when the bit is screwed into the screw groove, the anti-slip teeth 3 will create a micro-engagement with the groove wall of the screw, which not only increases the contact friction, but also forms a continuous axial clamping force during rotation, thereby effectively suppressing the problem of disengagement caused by slippage or skipped teeth. This structural design can significantly improve the stability and reliability of the bit when disassembling or assembling rusted or inferior screws.

[0022] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A laser-etched anti-slip toothed single-headed and double-headed Phillips head bit, comprising a bit body (1), characterized in that: The bit body (1) is in the shape of a bar and has a cross-shaped groove structure at the front end. The cross-shaped groove structure is composed of multiple radially symmetrically arranged blades (2). The contact area at the top of the blades (2) is provided with anti-slip teeth (3) formed by laser etching. The anti-slip teeth (3) are several linear grooves arranged parallel to the center line of the blades (2), and the arrangement direction of the anti-slip teeth (3) is consistent with the screw-in direction of the bit body (1).

2. The laser-engraved anti-slip toothed single-headed double-headed Phillips screwdriver bit according to claim 1, characterized in that: The anti-slip serrations (3) cover a length of 3mm-4mm over the front end contact area of ​​the blade (2).

3. The laser-engraved anti-slip toothed single-headed double-headed Phillips screwdriver bit according to claim 1, characterized in that: The anti-slip teeth (3) have a spacing of 0.4-0.6 mm and a tooth depth of 0.01-0.03 mm.

4. A laser-engraved anti-slip toothed single-headed double-headed Phillips screwdriver bit according to claim 1, characterized in that: The bit body (1) is an integral molded structure, and the material is set as S2 alloy steel with a hardness value of HRC60±1.

5. A laser-engraved anti-slip toothed single-headed double-headed Phillips screwdriver bit according to claim 1, characterized in that: The blades (2) are symmetrically spaced apart, and the groove depth ranges from 1.5 mm to 3.5 mm.

6. A laser-engraved anti-slip toothed single-headed double-headed Phillips screwdriver bit according to claim 1, characterized in that: The outer surface of the blade (2) is provided with a hardened layer to enhance surface wear resistance.

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