Screw tap structure for dismounting broken perforated screw

Abstract

The utility model relates to the technical field of machining, in particular to a screw tap structure for dismounting a perforated broken screw, which comprises a screw tap (1), and the screw tap (1) comprises a cutting structure and a taper shank (2). The end, close to the cutting structure, of the screw tap (1) is provided with a fixing structure. The screw tap can rotate the broken screw together with the screw tap through a fixing structure, so that the broken screw is pushed out from the other end of the threaded hole; the cutting structure can carry out tapping operation, damaged threads of the broken screw are all recovered, tapping is not needed after the broken screw is taken out, and the working efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, and specifically, the utility model relates to a tap structure for disassembling broken screws by perforation. Background Art

[0002] During the production and maintenance process, the problem of broken screws often occurs, which poses a hidden danger to the equipment and seriously affects the safety production at the same time; to take out the broken screws in the threaded holes of the equipment, in the prior art, a tap is often used to extend into the threaded hole to push out the broken screws. However, when the broken screws damage the threads in the threaded holes and are completely stuck, the existing taps can only restore the damaged threads by tapping, but cannot quickly and efficiently take out the broken screws from the threaded holes.

[0003] The applicant found through retrieval that a Chinese patent document with the publication number of 213469879U disclosed a durable tap on June 18, 2021, which includes a tap body. A tap square head is arranged on the lower outer surface of the tap body, a tap cutting cone is arranged on the upper outer surface of the tap body, and a magnetic adsorption positioning pin is arranged on the upper outer surface of the tap cutting cone. The magnetic adsorption positioning pin includes a magnetic adsorption positioning pin body and a positioning pin bolt, and the magnetic adsorption positioning pin body is located on the upper outer surface of the positioning pin bolt; this device also cannot solve the above technical problems.

[0004] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the existing tap structure. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a tap structure for disassembling broken screws by perforation that can quickly and efficiently take out the broken screws in the threaded holes.

[0006] To solve the above technical problems, the technical solution adopted by the utility model is: a tap structure for disassembling broken screws by perforation, including a tap. The tap includes a cutting structure and a taper shank; a fixing structure is arranged at the end of the tap close to the cutting structure.

[0007] The fixing structure includes a top tooth; the top tooth is arranged on the end face of the tap.

[0008] The tap includes a tap rod; the cutting structure includes a cutting section and a chip removal groove; the top tooth is connected to the cutting section.

[0009] The chip removal groove is arranged between adjacent cutting sections; the cutting sections and the chip removal grooves are evenly arranged on the tap rod.

[0010] A guide cone section is arranged at the end of the cutting section; the guide cone section is connected to the top tooth.

[0011] The top tooth includes a cutting edge; inclined surfaces are respectively arranged on both sides of the cutting edge.

[0012] Four of the above-mentioned cutting sections are respectively arranged on the side surface of the tap; four of the above-mentioned top teeth are arranged at the top of the taper shank; the top teeth and the cutting sections are arranged corresponding to each other.

[0013] The taper shank is arranged at one end of the taper shank away from the cutting section; a connecting head is arranged at the end of the taper shank.

[0014] The connecting head is a square block.

[0015] Both the cutting section and the pilot cone section include cutting teeth; the cutting edge deviates towards one of its inclined surfaces.

[0016] The beneficial effects of this application are as follows:

[0017] 1. In this application, top teeth are arranged on the taper shank of the tap; four top teeth are arranged on the top surface of the taper shank; four cutting sections are arranged on the side surface of the taper shank, and chip flutes are arranged between adjacent cutting sections; the positions of the top teeth and the cutting sections correspond to each other; when a screw breaks in the threaded hole of the device and damages the thread of the threaded hole and is completely stuck; select a tap with a suitable specification according to the aperture of the threaded hole; screw the pilot cone end and the cutting section of the tap into the threaded hole, and the pilot cone end and the cutting section can cut and restore the damaged thread; when the top of the tap presses against the end of the broken screw, the top teeth of the tap will press against the broken screw; the cutting edge of the top teeth will cut into the end of the broken screw as the tap advances and rotates, so as to realize the rotation of the broken screw and the tap together, and the broken screw can be pushed out from the other end of the threaded hole; thus, the broken screw in the threaded hole can be quickly and efficiently taken out.

[0018] 2. During the process of pushing the broken screw out of the threaded hole in this application, the tap advances and rotates continuously, and its cutting part can perform tapping operation to completely restore the damaged thread of the broken screw, without the need for re-tapping after taking out the broken screw, effectively improving the working efficiency. Description of the Drawings

[0019] The following further details the specific implementation manners of the present utility model in conjunction with the drawings, where:

[0020] Figure 1 is a schematic structural diagram of the structure of the tap for removing the perforated broken screw.

[0021] Figure 2 is a schematic structural diagram of the top structure of the tap for removing the perforated broken screw.

[0022] The markings in the above figures are all:

[0023] The markings in the figure are:

[0024] 1. Tap, 101. Tap shank,

[0025] 2. Tap shank, 201. Connector,

[0026] 3. Top tooth, 301. Cutting edge, 302. Inclined plane,

[0027] 4. Cutting section, 401. Chip groove,

[0028] 5. Lead cone section, 501. Cutting teeth. Detailed implementation mode

[0029] Next, with reference to the attached drawings, through the description of the embodiments, the detailed implementation mode of the present utility model will be further described in detail. The purpose is to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present utility model, and to facilitate its implementation.

[0030] Figure 1 The tap structure for removing broken screws in the shown perforation includes a tap 1, and the tap 1 includes a cutting structure and a tap shank 2; a fixing structure is provided at the end of the tap 1 close to the cutting structure.

[0031] The tap 1 can rotate the broken screw together with the tap 1 through the fixing structure, so as to push the broken screw out from the other end of the threaded hole; the cutting structure can perform tapping operation to restore all the damaged threads of the broken screw, without the need to tap again after taking out the broken screw, effectively improving the work efficiency.

[0032] The fixing structure includes a top tooth 3; the top tooth 3 is provided on the end face of the tap 1.

[0033] The top tooth 3 is a conical structure; a plurality of top teeth 3 are provided on the end face of the tap 1; when the top of the tap 1 abuts against the end of the broken screw, the top teeth 3 of the tap 1 will abut against the broken screw; the cutting edge of the top tooth 3 will cut into the end of the broken screw as the tap 1 advances and rotates, so as to realize the rotation of the broken screw together with the tap 1.

[0034] The tap 1 includes a tap shank 101; the cutting structure includes a cutting section 4 and a chip groove 401; the top tooth 3 is connected to the cutting section 4.

[0035] The cutting section 4 can cut metal to form a cutting line of the thread in the hole; thus, it can cut and repair the damaged and distorted threads in the threaded hole by the broken screw; when the cutting section 4 cuts in the threaded hole, metal chips will be generated, and the chip groove 401 can discharge the metal chips from the threaded hole to prevent them from blocking the advancing path of the tap 1, affecting the tapping operation of the tap 1 and hindering the contact between the tap 1 and the broken screw.

[0036] A chip groove 401 is provided between adjacent cutting sections 4; the cutting section 4 and the chip groove 401 are evenly arranged on the tap shank 101.

[0037] A cutting section 4 is provided every other chip removal groove 401, which can facilitate the threading operation of the cutting section 4 and enable the metal chips to be discharged from the chip removal groove 401 in a timely manner. The equally spaced chip removal grooves 401 can also enhance the structural strength of the taper rod 101.

[0038] A guiding taper section 5 is provided at the end of the cutting section 4, and the guiding taper section 5 is connected to the top tooth 3.

[0039] The guiding taper section 5 is of a conical structure and is arranged at the forefront of the cutting section 4. The guiding taper section 5 can help the tap 1 to be positioned and guided at the start of cutting. The conical design of the guiding taper section 5 can gradually guide the tap 1 into the threaded hole of the device to start the cutting operation, which can effectively improve the working efficiency and also help to reduce the resistance and friction during the initial cutting, making the operation smoother and more precise.

[0040] The top tooth 3 includes a cutting edge 301, and inclined surfaces 302 are respectively provided on both sides of the cutting edge 301.

[0041] The cutting edge 301 protrudes upward. When the top of the tap 1 tightly abuts against the end of the broken screw, the cutting edge 301 of the top tooth 3 will cut into the end of the broken screw with the advancement and rotation of the tap 1, realizing the fixation of the two, so that the broken screw and the tap 1 rotate together.

[0042] Four cutting sections 4 are respectively provided on the side surface of the tap 1, and four top teeth 3 are provided at the top of the taper rod 101. The top teeth 3 are arranged corresponding to the cutting sections 4.

[0043] The top tooth 3 and the guiding taper section 5 are of an integral structure, which is polished by the operator for the guiding taper section 5. The guiding taper section 5 and the cutting section 4 are of an integral structure. The device is provided with four top teeth 3, which can fully cut into and fix the end of the broken screw, avoiding slippage between the tap 1 and the broken screw.

[0044] The taper shank 2 is arranged at one end of the taper rod 101 away from the cutting section 4, and a connecting head 201 is provided at the end of the taper shank 2.

[0045] The taper shank 2 is the tail part of the tap 1 and is usually thicker, which is convenient for operating and rotating the tap 1. The connecting head 201 can connect the tap 1 with a tap handle or a power tool. The operator can rotate the tap 1 through a handle or a wrench to perform threading or trimming.

[0046] The connecting head 201 is a square block.

[0047] The design of the square connecting head 201 enables the tap 1 to be easily connected to a tap handle or a wrench with a corresponding shape, which can have better matching, making the installation and disassembly operations more convenient and not easy to slide or twist.

[0048] Both the cutting section 4 and the pilot section 5 include cutting teeth 501; the cutting edge 301 is offset towards the inclined surface 302 on one side thereof.

[0049] The cutting teeth 501 have threaded cutting edges for cutting the workpiece material to form new threads; the cutting edges of the cutting teeth 501 are usually sharp and designed in a triangular structure with specific angles to ensure correct thread cutting during rotation and advancement; the cutting edge 301 is offset to the right.

[0050] The specific working process of the present utility model is as follows:

[0051] When a screw breaks in the threaded hole of the device and damages the threads of the threaded hole, being completely stuck; select a tap 1 with a suitable specification according to the aperture of the threaded hole; screw the pilot end 5 and the cutting section 4 of the tap 1 into the threaded hole, and the pilot end 5 and the cutting section 4 can cut and restore the damaged threads; when the top of the tap 1 abuts against the end of the broken screw, the top teeth 3 of the tap 1 will be tightened against the broken screw; the cutting edges of the top teeth 3 will cut into the end of the broken screw as the tap 1 advances and rotates, so that the broken screw rotates together with the tap 1, and the broken screw can be pushed out from the other end of the threaded hole; thus, the broken screw in the threaded hole can be quickly and efficiently removed.

[0052] The present utility model has been described exemplarily in combination with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present utility model; or without improvement, the above concept and technical solution of the present utility model are directly applied to other occasions, they are all within the protection scope of the present utility model.

Claims

1. A tap structure for removing broken screws through holes, characterized in that: The invention comprises a tap (1), wherein the tap (1) comprises a cutting structure and a taper handle (2); a fixing structure is provided at an end of the tap (1) close to the cutting structure; The fixing structure comprises a top tooth (3); the top tooth (3) is arranged on the end surface of the tap (1); The tap (1) comprises a taper rod (101); the cutting structure comprises a cutting segment (4) and a cutting groove (401); and the top tooth (3) is connected to the cutting segment (4).

2. A tap structure for removing a broken screw according to claim 1, characterized in that: The cutting grooves (401) are provided between adjacent cutting segments (4); the cutting segments (4) and the cutting grooves (401) are evenly arranged on the cone rod (101).

3. A tap structure for removing a broken screw according to claim 2, characterized in that: A guide cone section (5) is provided at the end of the cutting section (4); the guide cone section (5) is connected to the top tooth (3).

4. A tap structure for removing a broken screw according to claim 3, characterized in that: The top tooth (3) comprises a cutting edge (301); inclined surfaces (302) are respectively provided on both sides of the cutting edge (301).

5. A tap structure for removing a broken screw according to claim 4, characterized in that: Four cutting segments (4) are respectively arranged on the side surfaces of the tap (1); four top teeth (3) are arranged on the top of the taper rod (101); and the top teeth (3) are arranged correspondingly to the cutting segments (4).

6. A tap structure for removing a broken screw according to any one of claims 4 to 5, characterized in that: The tapered shank (2) is arranged at an end of the tapered rod (101) away from the cutting section (4); and a connecting head (201) is arranged at the end of the tapered shank (2).

7. A tap structure for removing a broken screw according to claim 6, characterized in that: The connector (201) is a square block.

8. A tap structure for removing a broken screw according to claim 7, characterized in that: The cutting section (4) and the guide cone section (5) both include cutting teeth (501); the cutting edge (301) is offset toward the inclined surface (302) on one side thereof.

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