Square tapper

Abstract

The utility model discloses a square tapper which comprises a square or rectangular tapper body, a plurality of alloy tool bits are arranged on the four edges of the front end of the tapper body at intervals, the interior of the front end of the tapper body is hollow to form a waste groove, and the tail of the tapper body is gradually shrunk to form a connecting part. A connecting hole is formed in the center of the tail end of the connecting part and connected with a high-frequency vibrator through a connecting rod. The square tapper is specially used for tapping operation of square or rectangular holes, one-time forming tapping can be achieved, dust is basically avoided in the tapping process, the tapping quality and efficiency can be effectively improved, and the operation comfort of operators can be effectively improved.

Description

Technical Field

[0001] The utility model relates to a hole opener, in particular to a square hole opener. Background Art

[0002] In engineering construction and architectural decoration, it is often involved to drill holes in the wall. Here, the holes are divided into round holes and square holes according to their shapes. There are special hole openers for round holes, which can be used for direct drilling operations. However, for those square holes or rectangular holes used for installing wire boxes, there is no special hole opener so far due to structural limitations. In actual drilling, four sides are first cut out by a cutting machine, and then the waste inside the hole is chiseled out with an impact drill or chisel. The whole drilling operation is time-consuming and labor-intensive, which seriously affects the drilling efficiency and quality. At the same time, a large amount of dust will be generated during the drilling process, which seriously threatens the health of the operator. Utility Model Content

[0003] In response to the above problems, the utility model designs a square hole opener, which is specially used for opening square or rectangular holes. It can realize one-time forming and opening of holes, and there is basically no dust during the opening process. It can not only effectively improve the opening quality and efficiency, but also effectively improve the working comfort of the operator.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A square hole opener, characterized in that it includes a square or rectangular hole opener body, a plurality of alloy cutting heads are arranged at intervals on the four sides of the front end of the hole opener body, the front end of the hole opener body is hollow inside to form a waste groove, the tail of the hole opener body gradually shrinks to form a connecting part, and a connecting hole is provided at the center of the tail end of the connecting part, and the connecting hole is connected to a high-frequency vibrator through a connecting rod.

[0006] More specifically, the tail of the alloy cutter head is welded to the mouth opener body.

[0007] More specifically, the top of the alloy cutter head is provided with an inclined surface from the outside to the inside, and a straight blade is formed at the top of the outer side of the alloy cutter head.

[0008] More specifically, the alloy blades are evenly spaced and arranged on each side of the hole opener body.

[0009] When the utility model is in use, the high-frequency vibrator generates high-frequency axial vibration, and the axial vibration is synchronously transmitted to the hole opener body and the combined cutter head on the head thereof through the connecting rod, thereby driving the alloy cutter head to gradually cut into the wall to realize the hole opening operation. The entire hole opening operation is completed in one step, and does not generate a large amount of dust like a cutting machine. It has the characteristics of high hole opening efficiency and good hole opening quality, and can effectively improve the working comfort of the hole opener. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 , a schematic diagram of the three-dimensional structure of the utility model;

[0011] Figure 2 , a front schematic diagram of the utility model;

[0012] in:

[0013] 1—hole opener body, 11—waste slot, 12—connecting part, 121—connecting hole, 2—alloy cutter head, 21—bevel, 22—straight blade, 3—connecting rod, 4—high-frequency vibrator. DETAILED DESCRIPTION

[0014] like Figure 1 and 2 As shown, a square hole opener includes a square or rectangular hole opener body 1. In this figure, only the rectangular structure is explained. In practice, the hole opener body can be set to a square shape as needed. Its working principle and technical effect are the same, so they will not be repeated here.

[0015] The four sides of the front end of the hole opener body 1 are spaced apart with multiple alloy cutter heads 2, and the tail ends of the alloy cutter heads 2 are welded and fixedly connected to the hole opener body 1. Here, considering the balanced force of each alloy cutter head 2 when opening the hole, the multiple alloy cutter heads 2 on each side are evenly spaced.

[0016] The front end of the hole opener body 1 is hollow to form a waste groove 11 for collecting waste during the hole opening process to ensure smooth hole opening.

[0017] The top of the alloy cutter head 2 is provided with an inclined surface 21 from the outside to the inside and a straight blade 22 is formed at the top of the outer side of the alloy cutter head to ensure that the alloy cutter head 2 can cut into the wall quickly and effortlessly during the hole opening process.

[0018] The tail of the hole opener body 1 gradually narrows to form a connecting portion 12, and a connecting hole 121 is provided at the center of the tail end of the connecting portion 12. The connecting hole 121 is connected to a high-frequency vibrator 4 through a connecting rod 3. The high-frequency vibrator 4 is a device such as an electric hammer, and other devices that can generate axial high-frequency vibrations can also be used.

[0019] When in use, the high-frequency vibrator 4 generates high-frequency axial vibration, which is synchronously transmitted to the hole opener body 1 and the alloy cutter head 2 on its head through the connecting rod 3, thereby driving the alloy cutter head 2 to gradually cut into the wall to realize the hole opening operation. The entire hole opening operation is completed in one go and will not generate a large amount of dust like a cutting machine. It has the characteristics of high hole opening efficiency and good hole opening quality, and can effectively improve the working comfort of the hole opener.

[0020] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification, equivalent change or modification made to the above embodiment based on the technical principle of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A square hole opener, characterized by: The invention comprises a square or rectangular hole opener body (1), a plurality of alloy blades (2) are arranged at intervals on the four sides of the front end of the hole opener body (1), the front end of the hole opener body (1) is hollow inside to form a waste groove (11), the tail of the hole opener body (1) gradually shrinks to form a connecting part (12), and a connecting hole (121) is provided at the center of the tail end of the connecting part (12), and the connecting hole (121) is connected to a high-frequency vibrator (4) through a connecting rod (3).

2. The square hole opener according to claim 1, characterized in that: The tail of the alloy blade head (2) is welded to the hole-opening device body (1).

3. A square hole opener according to claim 1 or 2, characterized in that: The top end of the alloy blade head (2) is provided with an inclined surface (21) from the outside to the inside, and a straight blade (22) is formed at the top end of the outer side of the alloy blade head (2).

4. A square hole opener according to claim 1 or 2, characterized in that: The alloy blades (2) are arranged at equal intervals on each side of the hole opener body (1).

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