High-hardness twist drill

Abstract

The utility model provides a high hardness twist drill which comprises a drill handle and a drill bit connected to the drill handle, a bowl-shaped protective cover is arranged at the joint of the drill handle and the drill bit, an opening of the bowl-shaped protective cover faces downwards, and the top face of the bowl-shaped protective cover is a horizontal plane. According to the high-hardness twist drill provided by the utility model, the bowl-shaped protective cover is arranged at the joint of the drill handle and the drill bit, and when the drill bit performs punching operation on a metal plate, splashed metal scraps can be blocked by the bowl-shaped protective cover, so that hands cannot be injured, and a protective effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of twist drills, in particular to a high-hardness twist drill. Background Art

[0002] A twist drill is a tool that uses rotation relative to a fixed axis to create circular holes in a workpiece. It gets its name from the spiral shape of its chip flutes, which resemble twists. Twist drills can be used with manual or electric handheld drilling tools, drilling machines, milling machines, lathes, and even machining centers. The drill bit is typically made of high-speed tool steel or carbide.

[0003] High-hardness twist drills are usually used to drill holes in high-strength metal plates. During the drilling process, metal debris is easily generated on the metal plates. Some metal debris splashes at a high speed. If a handheld drilling tool is used for drilling, the flying metal debris may hit the hands and cause serious injuries. Utility Model Content

[0004] The main purpose of the utility model is to provide a high-hardness twist drill, which is used to reduce the possibility of injuries to people caused by flying debris during the process of drilling holes in metal plates.

[0005] To achieve the above purpose, the utility model provides a high-hardness twist drill, which includes a drill shank and a drill bit connected to the drill shank. A bowl-shaped protective cover is provided at the connection between the drill shank and the drill bit. The opening of the bowl-shaped protective cover is downward, and the top surface of the bowl-shaped protective cover is a horizontal plane.

[0006] The high-hardness twist drill provided by the utility model has a bowl-shaped protective cover at the connection between the drill shank and the drill bit. When the drill bit is drilling a metal plate, flying metal debris will be blocked by the bowl-shaped protective cover, thereby preventing injuries to human hands and playing a protective role.

[0007] In one possible implementation, a flange is provided on the outer wall of the opening of the bowl-shaped protective cover, and a rubber protective pad is detachably mounted on the flange. The flange is provided on the outer wall of the opening of the bowl-shaped protective cover for mounting the rubber protective pad. When the bowl-shaped protective cover is not in use and placed flat, the rubber protective pad can contact the placement surface, reducing the possibility of damage to the bowl-shaped protective cover. Furthermore, when in use, the outermost ring of the bowl-shaped protective cover rotates with the rubber material, reducing the possibility of accidental contact and cuts.

[0008] In one possible implementation, the bottom end of the drill shank is symmetrically provided with two mounting grooves on the side wall, and the top of the bowl-shaped protective cover is provided with a mounting plate. The bowl-shaped protective cover is a detachable structure and is installed by inserting the mounting plate into the mounting grooves.

[0009] In a possible implementation, threaded holes are provided on the sidewalls of the mounting slot and the mounting plate. The mounting plate is inserted into the mounting slot and fixed thereto by screws.

[0010] In a possible implementation, a cross-shaped reinforcement strip is provided on the inner top surface of the bowl-shaped protective cover, thereby improving the structural strength of the bowl-shaped protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of a high-hardness twist drill provided by the utility model;

[0012] Figure 2 It is a schematic diagram of the inner side of a bowl-shaped protective cover provided by the present invention. DETAILED DESCRIPTION

[0013] The following description is intended to disclose the present invention and enable those skilled in the art to implement the present invention. The preferred embodiments described below are provided for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0014] In the description of this application, it should be understood that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.

[0015] In the description of this application, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0016] See attached figure Figure 1 , Figure 1 This is a schematic diagram of the structure of a high-hardness twist drill provided by the utility model. Figure 1 As shown, the utility model provides a high-hardness twist drill comprising a drill shank 1 and a drill bit 2 connected to the drill shank 1, a bowl-shaped protective cover 3 is provided at the connection between the drill shank 1 and the drill bit 2, the opening of the bowl-shaped protective cover 3 is downward, and the top surface of the bowl-shaped protective cover 3 is a horizontal plane.

[0017] The high-hardness twist drill provided by the utility model is provided with a bowl-shaped protective cover 3 at the connection between the drill shank 1 and the drill bit 2. When the drill bit 2 performs a drilling operation on a metal plate, flying metal debris will be blocked by the bowl-shaped protective cover 3, thereby preventing injuries to human hands and playing a protective role.

[0018] In one possible implementation, a flange 4 is provided on the outer wall of the opening of the bowl-shaped protective cover 3, and a rubber protective pad is detachably mounted on the flange 4. The flange 4 is provided on the outer wall of the opening of the bowl-shaped protective cover 3 for mounting the rubber protective pad. When the bowl-shaped protective cover 3 is not in use and is placed flat, the rubber protective pad can contact the placement surface, reducing the possibility of damage to the bowl-shaped protective cover 3. Furthermore, when the bowl-shaped protective cover 3 is in use, the outermost ring of the rubber material rotates, reducing the possibility of accidental contact and cuts.

[0019] In one possible implementation, the bottom end of the drill shank 1 is symmetrically provided with two mounting grooves 5 on the side wall, and the top of the bowl-shaped protective cover 3 is provided with a mounting plate 6. The bowl-shaped protective cover 3 is a detachable structure and is installed by inserting the mounting plate 6 into the mounting groove 5.

[0020] In a possible implementation, threaded holes 7 are provided on the sidewalls of the mounting slot 5 and the mounting plate 6. The mounting plate 6 is inserted into the mounting slot 5 and fixed thereto by screws.

[0021] like Figure 2 As shown, in a possible implementation, a cross reinforcement strip 8 is provided on the inner top surface of the bowl-shaped protective cover 3. The cross reinforcement strip 8 improves the structural strength of the bowl-shaped protective cover 3.

[0022] It is worth mentioning that for those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this utility model should be included in the scope of protection of this utility model.

Claims

1. A high hardness twist drill, characterized in that: It comprises a drill shank and a drill bit connected to the drill shank, wherein a bowl-shaped protective cover is arranged at the connection between the drill shank and the drill bit, the opening of the bowl-shaped protective cover is downward, and the top surface of the bowl-shaped protective cover is a horizontal plane; a circle of flange is arranged on the outer side wall of the opening of the bowl-shaped protective cover, and a rubber protective pad is detachably mounted on the flange.

2. The high hardness twist drill according to claim 1, characterized in that: The bottom end of the drill handle is symmetrically provided with two mounting grooves on the side wall, and the top of the bowl-shaped protective cover is provided with a mounting plate.

3. The high hardness twist drill according to claim 2, characterized in that: The side wall of the mounting groove and the mounting plate are both provided with threaded holes.

4. The high hardness twist drill according to claim 3, characterized in that: The inner top surface of the bowl-shaped protective cover is provided with cross-shaped reinforcement strips.

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