Hole opening tool

Abstract

The utility model provides a trepanning tool which comprises a mounting base assembly fixed to the circle center of a to-be-cut piece. The fixing assembly comprises a first fixing structure and a second fixing structure, the first fixing structure is rotatably connected with the side, away from the to-be-cut piece, of the mounting base assembly, the second fixing structure is rotatably connected with the first fixing structure, and the rotating axis of the second fixing structure is perpendicular to the rotating axis of the first fixing structure; the gas cutting assembly is connected with the second fixing structure and is perpendicular to the rotating axis of the second fixing structure. According to the technical scheme, the problem that in the prior art, in the plate gas cutting tapping process, the machining precision is low is effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of plate hole punching, and in particular to a hole punching tool. Background Art

[0002] In the field of mechanical processing and manufacturing, oxyacetylene cutting guns are usually used to cut holes in steel plates.

[0003] Currently, the commonly used cutting method is to draw a circle to be cut, and then the worker holds a cutting gun and cuts along the drawn line.

[0004] In the prior art, the cutting method using a handheld gas cutting gun has low working efficiency and low cutting accuracy, and manual operation is prone to errors, resulting in scrapped plates and threats to personnel health, such as CN218362602U. Utility Model Content

[0005] A technical problem to be solved by the present application is that during the process of gas cutting holes in plate, there is a problem of low processing accuracy.

[0006] In order to solve the above technical problems, the present application provides a hole-opening tool.

[0007] A hole-opening tool provided according to the present application includes: a mounting seat assembly, which is fixed at the center of the workpiece to be cut; a fixing assembly, which includes a first fixing structure and a second fixing structure, the first fixing structure being rotatably connected to a side of the mounting seat assembly away from the workpiece to be cut, the second fixing structure being rotatably connected to the first fixing structure, and the rotation axis of the second fixing structure being arranged perpendicular to the rotation axis of the first fixing structure; and a gas cutting assembly, which is connected to the second fixing structure and is arranged perpendicular to the rotation axis of the second fixing structure.

[0008] In some embodiments, the first fixing structure includes a first connecting portion, the second fixing structure includes an angle adjustment portion and a second connecting portion, the second connecting portion is disposed inside the first connecting portion, and the angle adjustment portion passes through the first connecting portion and the second connecting portion.

[0009] In some embodiments, the angle adjustment portion includes a threaded segment, a knob and a nut, the knob is connected to the threaded segment, the threaded segment passes through the first connecting portion and the second connecting portion, and the nut cooperates with the threaded segment and is located at the end of the threaded segment away from the knob.

[0010] In some embodiments, a first indicator line is provided on the knob, and an angle scale line corresponding to the knob is provided on the first connecting portion.

[0011] In some embodiments, the second fixing structure further includes a clamping portion connected to the second connecting portion and located at an end of the second connecting portion away from the first connecting portion, and the gas cutting assembly is connected to the clamping portion.

[0012] In some embodiments, the first fixing structure further includes a third connecting portion and a rotating portion, the rotating portion is rotatably connected to the mounting seat assembly, and the third connecting portion is movably connected to the rotating portion.

[0013] In some embodiments, the third connecting portion has a long hole, and a fastener is inserted between the rotating portion and the long hole.

[0014] In some embodiments, a second indicator line is provided on the fastener, and a length scale line is provided on the third connecting portion, and the length scale line is located at the edge of the long hole.

[0015] In some embodiments, the mounting assembly includes an electromagnet, and the first fixing structure is rotatably connected to the electromagnet.

[0016] In some embodiments, a negative pressure adsorption hole is provided on the mounting seat assembly, and the negative pressure adsorption hole is arranged toward the workpiece to be cut.

[0017] Through the above-mentioned technical solution, the hole-making tool provided by this application is designed with the center position of the circle designed on the surface of the workpiece to be cut, the mounting seat assembly is fixed at the center of the circle, the gas cutting assembly is started, the first fixing structure is rotated, and the gas cutting assembly rotates along the center of the circle. By rotating the second fixing structure, the angle between the cutting direction of the gas cutting assembly and the vertical direction is changed, thereby realizing the processing of straight holes or tapered holes. The technical solution of this application effectively solves the problem of low processing accuracy in the gas cutting hole-making process of plate materials in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 A schematic diagram of the top view of the hole-opening tool disclosed in the first embodiment of the present application is shown;

[0020] Figure 2 Shown Figure 1 Schematic diagram of the main structure of the hole-opening tool.

[0021] Description of reference numerals:

[0022] 10. Mounting seat assembly; 20. Fixing assembly; 21. First fixing structure; 211. First connecting portion; 212. Third connecting portion; 2121. Long hole; 213. Rotating portion; 22. Second fixing structure; 221. Angle adjustment portion; 2211. Threaded section; 2212. Knob; 2213. Nut; 222. Second connecting portion; 223. Clamping portion. DETAILED DESCRIPTION

[0023] The following detailed description of the embodiments of the present application is provided in conjunction with the accompanying drawings and examples. The detailed description of the following examples and the accompanying drawings are intended to illustrate the principles of the present application, but are not intended to limit the scope of the present application. The present application may be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but rather encompasses all technical solutions within the scope of the claims.

[0024] The present application provides these embodiments to make this application thorough and complete, and to fully express the scope of this application to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments should be interpreted as merely exemplary, and not as limiting.

[0025] It should be noted that, in the description of this application, unless otherwise specified, "plurality" means greater than or equal to two; the terms "upper," "lower," "left," "right," "inner," "outer," and the like, indicating directions or positional relationships, are intended solely to facilitate the description of this application and simplify the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0026] In addition, the terms "first," "second," and similar terms used in this application do not denote any order, quantity, or importance, but are simply used to distinguish different parts. "Perpendicular" does not mean perpendicular in the strict sense, but rather means within the tolerance range. "Parallel" does not mean parallel in the strict sense, but rather means within the tolerance range. "Include" or "comprising" and similar terms mean that the elements preceding the word include the elements listed after the word, and do not exclude the possibility of other elements being included.

[0027] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediary. A person of ordinary skill in the art will understand the specific meanings of the above terms in this application depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intervening device between the specific device and the first or second device.

[0028] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and should not be interpreted in an idealized or highly formal sense, unless explicitly defined as such herein.

[0029] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0030] like Figure 1 and Figure 2 As shown, the hole-opening tool disclosed in the first embodiment of the present application includes: a mounting seat assembly 10, a fixing assembly 20 and a gas cutting assembly. The mounting seat assembly 10 is fixed at the center of the workpiece to be cut. The fixing assembly 20 includes a first fixing structure 21 and a second fixing structure 22. The first fixing structure 21 is rotatably connected to the side of the mounting seat assembly 10 away from the workpiece to be cut. The second fixing structure 22 is rotatably connected to the first fixing structure 21. The rotation axis of the second fixing structure 22 is arranged perpendicular to the rotation axis of the first fixing structure 21. The gas cutting assembly is connected to the second fixing structure 22 and is arranged perpendicular to the rotation axis of the second fixing structure 22.

[0031] Using the technical solution of Example 1, the center of a circle is designed on the surface of the workpiece to be cut, the mounting base assembly 10 is fixed at the center of the circle, the gas cutting assembly is activated, and the first fixing structure 21 is rotated, causing the gas cutting assembly to rotate along the center of the circle. By rotating the second fixing structure 22, the angle between the cutting direction of the gas cutting assembly and the vertical direction is changed, thereby achieving the processing of straight holes or tapered holes. The technical solution of Example 1 effectively solves the problem of low processing accuracy in the existing technology of gas cutting hole opening in plate.

[0032] like Figure 1 and Figure 2As shown, in the technical solution of the first embodiment, the first fixing structure 21 includes a first connecting portion 211, and the second fixing structure 22 includes an angle adjustment portion 221 and a second connecting portion 222. The second connecting portion 222 is disposed within the first connecting portion 211, and the angle adjustment portion 221 extends through the first connecting portion 211 and the second connecting portion 222. The angle between the first connecting portion 211 and the second connecting portion 222 is adjusted by the angle adjustment portion 221, thereby changing the angle between the cutting direction of the gas cutting assembly and the surface of the workpiece to be cut, thereby achieving the processing of holes with different tapers, and having greater versatility.

[0033] like Figure 1 and Figure 2 As shown, in the technical solution of the first embodiment, the angle adjustment portion 221 includes a threaded section 2211, a knob 2212, and a nut 2213. The knob 2212 is connected to the threaded section 2211, which passes through the first connecting portion 211 and the second connecting portion 222. The nut 2213 cooperates with the threaded section 2211 and is located at the end of the threaded section 2211 away from the knob 2212. The nut 2213 is fixed to the first connecting portion 211. The knob 2212 is loosened and the second connecting portion 222 is rotated to adjust the angle between the cutting direction and the surface to be cut according to the desired taper of the hole. After the adjustment is completed, the knob 2212 is tightened, the first connecting portion 211 is deformed, and the first connecting portion 211 clamps the second connecting portion 222, thereby fixing the second connecting portion 222. This prevents the cutting direction from changing during the cutting process, which would result in poor quality of the inner wall surface of the hole.

[0034] like Figure 1 and Figure 2 As shown, in the technical solution of Example 1, a first indicator line is provided on the knob 2212, and an angle scale line corresponding to the knob 2212 is provided on the first connecting portion 211. By reading the angle scale line corresponding to the first indicator line, the angle between the corresponding cutting direction and the surface to be cut can be calculated, which facilitates the operator to adjust the second connecting portion 222 to the appropriate angle according to the taper of the hole to be processed.

[0035] like Figure 1 and Figure 2As shown, in the technical solution of Example 1, the second fixing structure 22 also includes a clamping portion 223, which is connected to the second connecting portion 222 and is located at the end of the second connecting portion 222 away from the first connecting portion 211. The gas cutting assembly is connected to the clamping portion 223. The clamping portion 223 includes two elastic sheets, each of which is provided with a corresponding arc segment. The gas cutting assembly is disposed between the two arc segments. A connecting bolt is provided at the end of the two elastic sheets away from the second connecting portion 222. By rotating the connecting bolt, the distance between the two elastic sheets is changed, thereby achieving control of the clamping force of the clamping portion 223. The structure of the clamping portion 223 is simple, easy to process, and suitable for clamping gas cutting assemblies of various sizes.

[0036] like Figure 1 and Figure 2 As shown, in the technical solution of the first embodiment, the first fixing structure 21 further includes a third connecting portion 212 and a rotating portion 213. The rotating portion 213 is rotatably connected to the mounting seat assembly 10, and the third connecting portion 212 is movably connected to the rotating portion 213. By moving the third connecting portion 212, the distance between the gas cutting assembly and the rotating portion 213 is changed, and the movement radius of the gas cutting assembly is changed, thereby achieving the processing of circular holes of different diameters, and enhancing versatility.

[0037] like Figure 1 and Figure 2 As shown, in the technical solution of the first embodiment, the third connecting portion 212 has an elongated hole 2121, and a fastener is inserted between the rotating portion 213 and the elongated hole 2121. When the fastener is loosened, the third connecting portion 212 can move along the length of the elongated hole 2121, and the distance between the gas cutting assembly and the rotating portion 213 is adjusted according to the diameter of the circular hole. After adjusting to a suitable position, the fastener is tightened, and the third connecting portion 212 is fixedly connected to the rotating portion 213. The rotating portion 213 is rotatably connected to the mounting base assembly 10, thereby preventing the problem of poor surface quality of the inner wall of the circular hole caused by movement of the third connecting portion 212 during the cutting process.

[0038] like Figure 1 and Figure 2 As shown, in the technical solution of Example 1, a second indicator line is provided on the fastener, and a length scale line is provided on the third connecting portion 212, with the length scale line being located at the edge of the long hole 2121. During adjustment of the third connecting portion 212, the fastener is loosened to ensure that the second indicator line on the fastener is parallel to the length scale line on the third connecting portion 212. The position of the third connecting portion 212 is adjusted, and the scale is read to obtain the current rotation radius of the gas cutting assembly, making it easier for workers to adjust the position of the third connecting portion 212 according to the size of the hole to be processed.

[0039] like Figure 1 and Figure 2As shown, in the technical solution of Example 1, the mounting base assembly 10 includes an electromagnet, and the first fixing structure 21 is rotatably connected to the electromagnet. When the workpiece to be cut is a magnetic material, the mounting base assembly 10 is positioned at the center of the hole to be cut. The electromagnet is energized, and the mounting base assembly 10 and the workpiece to be cut are attached together under the action of magnetic force. Rotating the first fixing structure 21 drives the gas cutting assembly to complete the circular hole processing. The first fixing structure 21 is made of a non-magnetic material to avoid the problem of difficulty in rotating the mounting base assembly 10 due to its magnetic properties.

[0040] The gas cutting assembly includes a nozzle, a first gas pipe, a second gas pipe, a first regulating valve, a second regulating valve, and a mixed gas pipe. Oxygen is introduced into the first gas pipe, and acetylene gas is introduced into the second gas pipe. The first gas pipe and the second gas pipe are respectively connected to the mixed gas pipe. By adjusting the opening of the first regulating valve and the second regulating valve, the mixing ratio of the two gases is changed, and the mixed gas is introduced into the nozzle for ignition. The nozzle emits a high-temperature flame to cut the workpiece to be cut. The nozzle has two limiting protrusions with a predetermined spacing between the two limiting protrusions. When the clamping portion 223 clamps the nozzle, the clamping portion is located between the two limiting protrusions. The provision of the two limiting protrusions prevents the nozzle structure from moving in the vertical direction, ensuring that the distance between the nozzle and the workpiece surface remains consistent, ensuring that the heating temperature of the workpiece is stable, and thus ensuring a smooth cut.

[0041] The technical solution of Example 2 differs from that of Example 1 in that mounting base assembly 10 is provided with negative pressure adsorption holes, which are positioned toward the workpiece to be cut. Negative pressure adsorption secures mounting base assembly 10 to the workpiece to be cut, allowing mounting base assembly 10 to be secured to workpieces of different materials. Mounting base assembly 10 is made of acrylic. Its high-definition transparency allows operators to easily observe whether mounting base assembly 10 is positioned at the center of the workpiece, ensuring accurate positioning of mounting base assembly 10.

[0042] It should be noted that the mounting seat assembly 10 can also adopt structures such as a magnetic seat and a hand pump, or can be directly fixed on the workpiece to be cut by means of gluing.

[0043] From the above, it can be seen that the existing method of cutting holes in steel plates is to draw a circle to be cut on the steel plate, and then use a handheld cutting gun to cut along the drawn line. This method has the disadvantages of low work efficiency, low cutting accuracy, and the need to process the cutting part twice. The present application solves the above problems. The diameter of the hole to be opened can be adjusted, the groove angle of the hole opening can be adjusted, and it can be fixed on the steel plate to be cut to improve the processing accuracy. The present application is a steel rectangular gas cutting fixture (third connecting part 212), with a rectangular hole (long hole 2121) in the middle, an operating handle at one end, and a gas cutting fixture (second fixed structure 22) at the other end. During the cutting operation, the center of the circle to be cut is first located on the steel plate to be cut. The diameter of the cut hole is adjusted by moving the adjusting bolt (fastener) left and right. The adjusting bolt is tightened, and the magnetic base (mounting base assembly 10) with a switch is positioned and attracted to the center of the circle. The connection between the magnetic base and the adjusting bolt can rotate 360 degrees. The cutting gun nozzle (nozzle) is placed on the gas cutting nozzle fixture (clamping portion 223). The gas cutting nozzle clamping bolt (connecting bolt) is tightened to fix the cutting gun nozzle. If the cut circular edge needs to have a bevel, the angle adjustment bolt (angle adjustment portion 221) is loosened, the gas cutting nozzle fixture is lifted up to the angle of the required bevel and the angle adjustment bolt is tightened. After adjustment, oxygen and acetylene are turned on for cutting. The operator rotates the fixture, and the fixture cuts the required circular hole on the steel plate along the radius from the base to the gas cutting nozzle fixture with the magnetic base as the center of the circle. Since the distance the adjusting bolt can move within the rectangular slot is limited, the fixture can be made in various sizes as needed to achieve the purpose of cutting circles of various diameters.

[0044] Thus far, various embodiments of the present application have been described in detail. To avoid obscuring the concept of the present application, some details well known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions of this application.

[0045] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art will understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present application. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present application. In particular, as long as there are no structural conflicts, the various technical features mentioned in the various embodiments may be combined in any manner.

Claims

1. A hole-opening tool, characterized in that: include: A mounting seat assembly (10), wherein the mounting seat assembly (10) is fixed at the center of the workpiece to be cut; A fixing assembly (20), the fixing assembly (20) comprising a first fixing structure (21) and a second fixing structure (22), the first fixing structure (21) being rotatably connected to a side of the mounting seat assembly (10) away from the workpiece to be cut, the second fixing structure (22) being rotatably connected to the first fixing structure (21), and the rotation axis of the second fixing structure (22) being arranged perpendicular to the rotation axis of the first fixing structure (21); A gas cutting assembly is connected to the second fixed structure (22) and is arranged perpendicular to the rotation axis of the second fixed structure (22).

2. The hole opening tool according to claim 1, characterized in that The first fixing structure (21) includes a first connecting portion (211), and the second fixing structure (22) includes an angle adjustment portion (221) and a second connecting portion (222), wherein the second connecting portion (222) is inserted into the first connecting portion (211), and the angle adjustment portion (221) passes through the first connecting portion (211) and the second connecting portion (222).

3. The hole opening tool according to claim 2, characterized in that: The angle adjustment portion (221) comprises a threaded section (2211), a knob (2212) and a nut (2213); the knob (2212) is connected to the threaded section (2211); the threaded section (2211) passes through the first connecting portion (211) and the second connecting portion (222); the nut (2213) cooperates with the threaded section (2211) and is located at an end of the threaded section (2211) away from the knob (2212).

4. The hole opening tool according to claim 3, characterized in that: The knob (2212) is provided with a first indicator line, and the first connecting portion (211) is provided with an angle scale line corresponding to the knob (2212).

5. The hole opening tool according to claim 2, characterized in that: The second fixing structure (22) further includes a clamping portion (223), the clamping portion (223) being connected to the second connecting portion (222) and being located at an end of the second connecting portion (222) away from the first connecting portion (211), and the gas cutting assembly being connected to the clamping portion (223).

6. The hole opening tool according to claim 1, characterized in that: The first fixing structure (21) further includes a third connecting portion (212) and a rotating portion (213), wherein the rotating portion (213) is rotatably connected to the mounting seat assembly (10), and the third connecting portion (212) is movably connected to the rotating portion (213).

7. The hole opening tool according to claim 6, characterized in that: The third connecting portion (212) has a long hole (2121), and a fastener is provided between the rotating portion (213) and the long hole (2121).

8. The hole opening tool according to claim 7, characterized in that: A second indicator line is provided on the fastener, and a length scale line is provided on the third connecting portion (212), wherein the length scale line is located at the edge of the long hole (2121).

9. The hole punching tool according to any one of claims 6 to 8, characterized in that: The mounting seat assembly (10) includes an electromagnet, and the first fixing structure (21) is rotatably connected to the electromagnet.

10. The hole punching tool according to any one of claims 1 to 8, characterized in that: The mounting seat assembly (10) is provided with a negative pressure adsorption hole, and the negative pressure adsorption hole is arranged toward the piece to be cut.

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