Tapping saw for quickly connecting, mounting and dismounting center drill through magnetic attraction

Abstract

The utility model relates to the technical field of trepanning saws, in particular to a trepanning saw for quickly connecting, mounting and dismounting a center drill through magnetic attraction, which comprises a trepanning saw body, the trepanning saw body comprises a trepanning saw body, a countersunk head inner hexagonal screw is arranged at the center of the rear end face of the trepanning saw body, and a magnet is arranged in front of the countersunk head inner hexagonal screw. A cylinder is arranged in front of the magnet and tightly matched with an inner hole of the trepanning saw body, a regular hexagonal prism is arranged in front of the cylinder, and a center drill body is arranged in front of the regular hexagonal prism. The front end of the center drill body penetrates through an inner cavity of the trepanning saw body in a penetrating mode, the regular hexagonal prism is clamped in a regular hexagonal hole in the connecting position of the trepanning saw body, and the front end of the center drill body is exposed out of the front end face of the trepanning saw body. According to the utility model, rapid connection and installation and rapid disassembly can be realized, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hole saws, in particular to a hole saw which adopts magnetic attraction to quickly connect, install and disassemble a center drill. Background Art

[0002] The hole opener is installed on an ordinary electric drill, and it can easily cut round holes, square holes, triangular holes, straight lines, and curves on any curved surface such as the flat surface, spherical surface, etc. of various plates such as copper, iron, stainless steel, and plexiglass. The rear of the traditional hole opener is connected to the drill bit of the pistol drill, and screws and screw holes are used for fastening, which is troublesome and inconvenient to install and disassemble. In response to the above problems, our company has made innovations. Utility Model Content

[0003] The utility model aims to provide a hole saw which adopts magnetic attraction to quickly connect, install and disassemble a center drill in view of the defects and shortcomings of the prior art.

[0004] The utility model discloses a hole saw that adopts a magnetic quick connection to connect a center drill, comprising a hole saw body, the hole saw body comprising a hole saw body, a countersunk hexagon socket screw is arranged at the center of the rear end face of the hole saw body, a magnet is arranged in front of the countersunk hexagon socket screw, a cylinder is arranged in front of the magnet to tightly match the inner hole of the hole saw body, a regular hexagonal prism is arranged in front of the cylinder, and a center drill body is arranged in front of the regular hexagonal prism; the front end portion of the center drill body is inserted through the inner cavity of the hole saw body, the regular hexagonal prism is clamped in the regular hexagonal hole at the connection of the hole saw body, and the front end portion of the center drill body is exposed outside the front end face of the hole saw body.

[0005] Furthermore, the center drill body includes a positioning drill rod, a positioning drill bit is provided at the front end of the positioning drill rod, a limiting rod is provided at the rear of the positioning drill rod, and a guide rod is provided at the rear of the limiting rod; the cross-section of the limiting rod is a regular hexagon, which cooperates with the hexagonal limiting hole at the center of the rear end face of the hole saw body.

[0006] After adopting the above structure, the beneficial effects of the utility model are as follows: the utility model describes a hole saw that adopts magnetic attraction to quickly connect and install and disassemble the center drill, which adopts a magnet installed at the rear end of the center drill body, and a countersunk hexagon socket screw that tightly presses against and fixes the magnet is installed at the rear end of the magnet; it has the ability to achieve quick connection and installation and quick disassembly, which greatly improves its work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application, but do not constitute an improper limitation of the present invention. In the drawings:

[0008] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0009] Figure 2 yes Figure 1 A magnified view of part A;

[0010] Figure 3 It is a three-dimensional structural schematic diagram of the utility model.

[0011] Description of reference numerals:

[0012] Hole saw body-1; hole saw body-2; positioning drill rod-3; positioning drill bit-4; cylinder-5; countersunk hexagon socket screw-6; magnet-7; regular hexagonal prism-8. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0014] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0015] like Figure 1-Figure 3 As shown, a hole saw using magnetic quick connection to install and disassemble a center drill described in this specific embodiment includes a hole saw body 1, which includes a hole saw body 2, a countersunk hexagon socket screw 6 is arranged at the center of the rear end face of the hole saw body 2, a magnet 7 is arranged in front of the countersunk hexagon socket screw 6 (to prevent the center drill body from falling off), a cylinder 5 is arranged in front of the magnet 7, an inner hole that tightly fits the hole saw body 2 is arranged in front of the cylinder 5 (to ensure concentricity), a regular hexagonal prism 8 is arranged in front of the cylinder 5, and a center drill body is arranged in front of the regular hexagonal prism 8; the front end portion of the center drill body is inserted through the inner cavity of the hole saw body 2, the regular hexagonal prism 8 is stuck in the regular hexagonal hole at the connection of the hole saw body 2, and the front end portion of the center drill body is exposed outside the front end face of the hole saw body 2.

[0016] Furthermore, the center drill body includes a positioning drill rod 3, a positioning drill bit 4 is provided at the front end of the positioning drill rod 3, a limiting rod is provided at the rear of the positioning drill rod 3, and a guide rod is provided at the rear of the limiting rod; the cross-section of the limiting rod is a regular hexagon, which cooperates with the hexagonal limiting hole at the center of the rear end face of the hole saw body 2.

[0017] The difference between the present design and the conventional hole saw is that in the present design, a magnet 7 is installed at the rear end of the center drill body, and a countersunk hexagon socket screw 6 is installed at the rear end of the magnet 7 to tightly fix the magnet 7; a hexagonal hole matching the drill bit of a pistol drill is arranged behind the countersunk hexagon socket screw 6.

[0018] Therefore, the traditional hole saw is connected to the drill bit by a screw hole connection structure. The patent adopts magnetic connection, which is convenient for connection and quick disassembly. The hexagonal drill bit cooperates with the countersunk hexagonal screw 6 to prevent spinning.

[0019] When the present design is in use, the drill bit of the pistol drill is inserted into the hole behind the countersunk hexagon socket screw 6. Since a magnet 7 is provided at the front of the countersunk hexagon socket screw 6, the magnetic force of the magnet 7 enables rapid magnetic attraction to the drill bit of the pistol drill.

[0020] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hole saw using magnetic quick connection to install and disassemble a center drill, characterized in that: The invention comprises a hole saw body, wherein a countersunk hexagon socket screw is arranged at the center of the rear end surface of the hole saw body, a magnet is arranged in front of the countersunk hexagon socket screw, a cylinder is arranged in front of the magnet, which tightly matches the inner hole of the hole saw body, a regular hexagonal prism is arranged in front of the cylinder, and a center drill body is arranged in front of the regular hexagonal prism; the front end portion of the center drill body is inserted through the inner cavity of the hole saw body, the regular hexagonal prism is stuck in the regular hexagonal hole at the connection of the hole saw body, and the front end portion of the center drill body is exposed outside the front end surface of the hole saw body.

2. A hole saw using magnetic quick connection to install and disassemble a center drill according to claim 1, characterized in that: The center drill body includes a positioning drill rod, a positioning drill bit is arranged at the front end of the positioning drill rod, a limiting rod is arranged at the rear of the positioning drill rod, and a guiding rod is arranged at the rear of the limiting rod; the cross-section of the limiting rod is a regular hexagon, which cooperates with the hexagonal limiting hole at the center of the rear end surface of the hole saw body.

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