Metal sheet tapper

Abstract

The utility model relates to a metal sheet tapper. The metal sheet tapper comprises a cutter head, an adjusting mechanism, a plurality of mounting arms and a plurality of cutter teeth, the multiple mounting arms are slidably arranged on the cutter head in the radial direction of the cutter head, the first ends of the mounting arms extend out of the periphery of the cutter head, and the multiple cutter teeth are detachably connected with the first ends of the multiple mounting arms in a one-to-one correspondence mode. The adjusting mechanism is arranged on the cutterhead, the mounting arms are connected with the adjusting mechanism, and the adjusting mechanism can adjust the distance from the first ends of the mounting arms to the center of the cutterhead at the same time. The cutter teeth are convenient to replace, and only the cutter teeth on the corresponding mounting arms need to be replaced after the metal sheet tapper is worn, so that the equipment investment is reduced. The adjusting mechanism can adjust the distances from the first ends of the multiple installation arms to the center of the cutter head at the same time, so that the diameter of the circle where the multiple cutter teeth are located is adjusted, the tapping diameter is adjusted, the flexibility of equipment is improved, the tapper does not need to be replaced when the tapping diameter changes, the operation process is simplified, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hole opener technical field especially relates to a metal sheet hole opener. BACKGROUND

[0002] The metal sheet hole opener is used for connecting with the electric drill, and carries out the punching operation on the metal sheet under the transmission force of the electric drill.

[0003] The conventional hole opener needs to select the hole opener of the corresponding size according to the size of the required hole before the hole opening, so different specifications of hole openers need to be equipped to match different sizes of holes, and when the required hole diameter changes in the hole opening process, the corresponding hole opener needs to be replaced, which is complicated to operate, and once the hole opener is missing, the corresponding size hole working operation will be delayed. UTILITY MODEL CONTENTS

[0004] (I) Technical problem to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a metal sheet hole opener.

[0006] (II) Technical scheme

[0007] In order to achieve the above-mentioned purpose, the metal sheet hole opener of the utility model includes a cutter head, an adjusting mechanism, a plurality of mounting arms and a plurality of cutter teeth.

[0008] A plurality of mounting arms are slidably arranged on the cutter head along the radial direction of the cutter head, and the first end of the mounting arm extends from the outer periphery of the cutter head, and a plurality of cutter teeth are respectively and detachably connected with the first end of a plurality of mounting arms one by one.

[0009] The adjusting mechanism is arranged on the cutter head, the mounting arm is connected with the adjusting mechanism, and the adjusting mechanism can simultaneously adjust the distance from the first end of a plurality of mounting arms to the center of the cutter head.

[0010] Optionally, a plurality of straight-through grooves are uniformly arranged on the cutter head along the radial direction, and a plurality of mounting arms are respectively and slidably connected with a plurality of straight-through grooves one by one.

[0011] Optionally, the mounting arm includes a first limiting plate, a second limiting plate and a sliding arm, the first limiting plate and the second limiting plate are respectively and one by one connected with a group of opposite surfaces of the sliding arm to form an I-shaped structure.

[0012] The sliding arm is slidably arranged in the straight-through groove, the first limiting plate is slidably connected with the upper surface of the cutter head, and the second limiting plate is slidably connected with the lower surface of the cutter head.

[0013] Optionally, the cutter tooth comprises a tooth part and a mounting part connected with each other.

[0014] The end faces of the first limiting plate and the second limiting plate are connected with the mounting part by screws.

[0015] Optionally, the adjusting mechanism comprises a rotating disc, a rotating shaft and a locking nut.

[0016] The rotating shaft is fixedly connected with the cutter head, the rotating shaft is coaxially arranged with the cutter head, and the rotating disc is rotationally connected with the rotating shaft.

[0017] The locking nut is threadedly connected with the rotating shaft, and the locking nut abuts against the rotating disc.

[0018] A plurality of arc-shaped through grooves are formed on the rotating disc and are symmetrically arranged about the rotation axis of the rotating disc, and the second end of the mounting arm is slidably connected with the arc-shaped through groove by a pin shaft.

[0019] Optionally, a wear-resistant sleeve is rotationally arranged on the pin shaft.

[0020] Optionally, a plurality of protrusions are uniformly arranged on the outer circumference of the rotating disc.

[0021] Optionally, a circular hole is formed on the cutter head at a position close to the outer circumference of the rotating disc.

[0022] Optionally, the metal sheet hole opener further comprises a drill bit, and the drill bit is connected with the rotating shaft.

[0023] Optionally, the metal sheet hole opener further comprises a connecting column, the cross section of the connecting column is a regular hexagon, the connecting column is connected with the cutter head, and the connecting column is coaxially arranged with the cutter head.

[0024] (Three) beneficial effects

[0025] The detachably connected cutter tooth is convenient to replace, after the metal sheet hole opener is worn, only the cutter tooth on the corresponding mounting arm needs to be replaced, without the need of overall replacement and abandonment, the service life of the metal sheet hole opener is improved, and the equipment investment is reduced. The adjusting mechanism is arranged on the cutter head, the mounting arm is connected with the adjusting mechanism, the adjusting mechanism can simultaneously adjust the distance from the first end of the plurality of mounting arms to the center of the cutter head, thereby adjusting the diameter of the circle where the plurality of cutter teeth are located, and further adjusting the diameter of the hole, the flexibility of the equipment is improved, when the diameter of the hole changes, the hole opener does not need to be replaced, the operation process is simplified, and the work efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the structure schematic view of the front surface of the metal sheet hole opener of the utility model;

[0027] Figure 2 It is the installation schematic view of the installation arm of the metal sheet hole opener of the utility model;

[0028] Figure 3 It is Figure 1 The enlarged view of A in the middle;

[0029] Figure 4 It is the structure schematic view of the metal sheet hole opener of the utility model using gear engagement adjustment turntable;

[0030] Figure 5 It is the structure schematic view of the back surface of the metal sheet hole opener of the utility model.

[0031]

Explanation of reference signs

[0032] 1: cutter head; 11: straight-through slot;

[0033] 2: adjustment mechanism; 21: turntable; 22: rotating shaft; 23: locking nut; 24: arc-shaped through slot; 25: pin shaft; 26: wear-resistant sleeve; 27: protrusion;

[0034] 3: installation arm; 31: first limiting plate; 32: second limiting plate; 33: sliding arm;

[0035] 4: cutter tooth; 41: tooth part; 42: installation part;

[0036] 5: round hole; 6: drill bit; 7: connecting column. DETAILED DESCRIPTION

[0037] In order to better explain the utility model, so as to facilitate understanding, the following specific embodiments are combined with the drawings, and the utility model is described in detail. Wherein, the orientation of "upper", "lower" and the like mentioned in this paper is referred to as the reference. Figure 2 .

[0038] Although the exemplary embodiments of the utility model are shown in the drawings, it should be understood that the utility model can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to more clearly and thoroughly understand the utility model, and to completely convey the scope of the utility model to those skilled in the art.

[0039] As shown in the figure, the utility model provides a metal sheet hole opener for hole opening operation on metal sheet according to the diameter requirement of the hole.

[0040] The metal sheet opening device comprises a cutter disc 1, a plurality of mounting arms 3, a plurality of cutter teeth 4 and an adjusting mechanism 2. The cutter disc 1 is a mounting structure for mounting the mounting arms 3 and the adjusting mechanism 2. Specifically, the cutter disc 1 is preferably a rotationally symmetrical structure such as a disc or a regular polygon, the mounting arms 3 are slidingly arranged on the cutter disc 1 along the radial direction of the cutter disc 1, and the first ends of the mounting arms 3 extend from the outer periphery of the cutter disc 1. The cutter teeth 4 are detachably connected to the first ends of the mounting arms 3 one by one. When the cutter disc 1 rotates, the mounting arms 3 are driven to rotate, and the cutter teeth 4 are abutted against the surface of the metal sheet by a downward pressure, so that the cutter teeth 4 cut the metal sheet, thereby achieving the purpose of opening holes in the metal sheet. The detachable cutter teeth 4 are convenient to replace. After the metal sheet opening device is worn, only the cutter teeth 4 on the corresponding mounting arms 3 need to be replaced, without the need for overall replacement and disposal, thereby prolonging the service life of the metal sheet opening device and reducing the equipment investment. The adjusting mechanism 2 is arranged on the cutter disc 1, the mounting arms 3 are connected to the adjusting mechanism 2, and the adjusting mechanism 2 can simultaneously adjust the distances from the first ends of the mounting arms 3 to the center of the cutter disc 1, thereby adjusting the diameters of the circles in which the cutter teeth 4 are located, further adjusting the diameters of the openings, improving the flexibility of the device, and simplifying the operation process and improving the work efficiency when the opening diameters change.

[0041] As shown in Figure 1 and Figure 2 , the cutter disc 1 is uniformly provided with a plurality of straight-through grooves 11 in the radial direction, the mounting arms 3 are partially located in the straight-through grooves 11, and the mounting arms 3 are slidingly connected to the straight-through grooves 11 one by one. Figure 2 Further, as shown in , the mounting arm 3 comprises a first limiting plate 31, a second limiting plate 32 and a sliding arm 33, the first limiting plate 31 and the second limiting plate 32 are connected to a group of opposite surfaces of the sliding arm 33 one by one to form a H-shaped structure. The sliding arm 33 is slidingly arranged in the straight-through groove 11, the first limiting plate 31 slidingly abuts against the upper surface of the cutter disc 1, and the second limiting plate 32 slidingly abuts against the lower surface of the cutter disc 1. In order to ensure the smoothness of sliding, a lubricant can be applied between the first limiting plate 31, the cutter disc 1 and the second limiting plate 32. The first limiting plate 31 and the second limiting plate 32 clamp the cutter disc 1, which cooperates with the sliding arrangement of the sliding arm 33 to avoid shaking of the mounting arm 3 and affect the precision of the opening.

[0042] Figure 1 and Figure 2As shown, the cutter tooth 4 comprises a tooth part 41 and a mounting part 42 connected with each other, and the end faces of the first ends of the first limiting plate 31 and the second limiting plate 32 are connected with the mounting part 42 through screws. In the preferred embodiment, a threaded hole is formed on the end face of the first end of the first limiting plate 31, two threaded holes are formed on the end face of the first end of the second limiting plate 32, and a through hole corresponding to the positions of the threaded holes is formed on the mounting part 42, so that the cutter tooth 4 is fixed through three screws in a triangular manner, thereby avoiding the shaking of the cutter tooth 4 from affecting the hole opening accuracy, and improving the mounting strength and facilitating the disassembly and assembly.

[0043] As shown in Figure 1 and Figure 3 , the adjusting mechanism 2 comprises a rotating disc 21, a rotating shaft 22 and a locking nut 23. The rotating shaft 22 is fixedly connected with the cutter disc 1, preferably by welding, and the rotating shaft 22 is coaxially arranged with the cutter disc 1. The rotating disc 21 is rotationally connected with the rotating shaft 22, and the rotating disc 21 is coaxially arranged with the rotating shaft 22. The locking nut 23 is threadedly connected with the rotating shaft 22, the rotating disc 21 is located between the locking nut 23 and the cutter disc 1, and the locking nut 23 abuts against the rotating disc 21 after being tightened, so as to lock the rotating disc 21 and avoid loosening of the rotating disc 21 during the hole opening process. A plurality of arc-shaped through grooves 24 are formed on the rotating disc 21 and are symmetrically arranged about the center of the rotating shaft 22 of the rotating disc 21. The second end of the first limiting plate 31 of the mounting arm 3 is slidably connected with the arc-shaped through groove 24 through a pin shaft 25 perpendicularly connected with the first limiting plate 31. When the rotating disc 21 rotates, the pin shaft 25 slides along the arc-shaped through groove 24, drives the mounting arm 3 to slide along the straight through groove 11, and further changes the diameter of the circle on which the plurality of cutter teeth 4 are located.

[0044] Further, referring to Figure 3 , a wear-resistant sleeve 26 is rotatably sleeved on the pin shaft 25, so as to improve the durability of the pin shaft 25, and the gap between the pin shaft 25 and the arc-shaped through groove 24 can also be compensated by replacing the wear-resistant sleeve 26.

[0045] Referring to Figure 1 , a plurality of protrusions 27 are uniformly arranged on the outer circumference of the rotating disc 21 to form a gear structure, so as to facilitate the user to rotate the rotating disc 21 by hand. Referring to Figure 4 , a circular hole 5 can also be formed on the cutter disc 1, the circular hole 5 is close to the outer circumference of the rotating disc 21, a gear with a wrench is inserted into the circular hole 5, the gear is engaged with the rotating disc 21, and the rotating disc 21 is driven to rotate by means of the gear with the wrench.

[0046] As shown in Figure 3 , the metal sheet hole opener further comprises a drill bit 6, the drill bit 6 is connected with the rotating shaft 22, and is used for center positioning during hole opening.

[0047] As shown in Figure 5As shown, the metal sheet opener further comprises a connecting column 7, the cross section of the connecting column 7 is a regular hexagon, the connecting column 7 is connected with the cutter head 1, and the connecting column 7 is coaxially arranged with the cutter head 1. The connecting column 7 is located on the other side of the drill bit 6 and the rotating disc 21, is used for being connected with an electric drill to drive the cutter head 1 to rotate, and provides a pressing force for the cutter head 1.

[0048] In the description of the present application, it should be understood that the terms "first", "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0049] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature is "above", "above" and "above" the second feature, which can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature is "below", "below" and "below" the second feature, which can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0051] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the present application without contradiction.

[0052] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the utility model.

Claims

1. A sheet metal panel hole cutter, characterized by, The metal sheet opening device comprises a cutter disc (1), an adjusting mechanism (2), a plurality of mounting arms (3) and a plurality of cutter teeth (4); The plurality of mounting arms (3) are arranged on the cutter disc (1) in a radial direction of the cutter disc (1) and have first ends extending from an outer periphery of the cutter disc (1), and the plurality of cutter teeth (4) are detachably connected to the first ends of the plurality of mounting arms (3) in one-to-one correspondence; The adjusting mechanism (2) is arranged on the cutter disc (1) and connected to the mounting arms (3), and the adjusting mechanism (2) can simultaneously adjust distances from the first ends of the plurality of mounting arms (3) to a center of the cutter disc (1).

2. The metal sheet piercer of claim 1 wherein, The cutter disc (1) is uniformly provided with a plurality of straight-through grooves (11) in the radial direction, and the plurality of mounting arms (3) are slidably connected to the plurality of straight-through grooves (11) in one-to-one correspondence.

3. The metal sheet piercer of claim 2 wherein, The mounting arm (3) comprises a first limiting plate (31), a second limiting plate (32) and a sliding arm (33), the first limiting plate (31) and the second limiting plate (32) are connected to a set of opposite surfaces of the sliding arm (33) in one-to-one correspondence to form a H-shaped structure. The sliding arm (33) is slidably arranged in the straight-through groove (11), the first limiting plate (31) is slidably connected to an upper surface of the cutter disc (1), and the second limiting plate (32) is slidably connected to a lower surface of the cutter disc (1).

4. The metal sheet piercer of claim 3 wherein, The cutter tooth (4) comprises a tooth portion (41) and a mounting portion (42) connected to each other. End surfaces of the first limiting plate (31) and the second limiting plate (32) are connected to the mounting portion (42) by screws.

5. The sheet metal piercer of claim 1 wherein, The adjusting mechanism (2) comprises a rotating disc (21), a rotating shaft (22) and a locking nut (23). The rotating shaft (22) is fixedly connected to the cutter disc (1) and coaxially arranged with the cutter disc (1), and the rotating disc (21) is rotatably connected to the rotating shaft (22). The locking nut (23) is threadedly connected to the rotating shaft (22) and abuts against the rotating disc (21). The rotating disc (21) is provided with a plurality of arc-shaped through grooves (24) symmetrically arranged about a center of a rotating shaft (22) of the rotating disc (21), and second ends of the mounting arms (3) are slidably connected to the arc-shaped through grooves (24) by pins (25).

6. The metal sheet piercer of claim 5 wherein, A wear-resistant sleeve (26) is rotatably arranged on the pin (25).

7. The metal sheet piercer of claim 5 wherein, A plurality of protrusions (27) are uniformly arranged on an outer periphery of the rotating disc (21).

8. The metal sheet piercer of claim 7 wherein, A circular hole (5) is arranged on the cutter disc (1) at a position corresponding to the outer periphery of the rotating disc (21).

9. The sheet metal piercer of claim 5 wherein, The metal sheet opening device further comprises a drill bit (6) connected to the rotating shaft (22).

10. The sheet metal piercer of claim 1 wherein, The metal sheet opening device further comprises a connecting column (7) having a cross section in the shape of a regular hexagon, the connecting column (7) is connected to the cutter disc (1) and coaxially arranged with the cutter disc (1).

Images