A manual beveling aid and its usage method

Abstract

This invention discloses a manual beveling auxiliary device and its usage method, comprising a structure composed of a support body, a connecting body, and a rotating body. The device is fixed to the front end of the cutting torch near the cutting nozzle by a clamping component on the rotating body. This invention, through the lateral and height adjustment bolts and the rotating body that can rotate relative to the connecting body to change its angle, allows for flexible adjustment of the height of the cutting nozzle from the workpiece, the lateral dimension of the cutting nozzle from the kerf, and the required beveling angle according to construction needs. Furthermore, the clamping component allows for changes in its direction and position on the cutting torch based on the construction environment and operating habits. This invention is applicable to manual beveling work with different plate thicknesses and angles, improves manual cutting operations, enhances the beveling quality in curved areas and confined spaces, increases work efficiency, reduces labor intensity, and improves practicality.

Description

Technical Field

[0001] This invention belongs to the field of shipbuilding technology, and in particular relates to an auxiliary device for manually cutting bevels and its usage method. Background Technology

[0002] In shipbuilding, beveling is a crucial technology that directly impacts the welding quality and overall performance of the ship's structure. Various traditional beveling methods exist, among which manual cutting torches remain an indispensable method due to their ease of operation, low cost, and portability. However, in on-site construction, especially when working in confined areas or around curved workpieces requiring beveling, space constraints and the reinforcement of joint edges after the steel structure is positioned prevent the effective implementation of many advanced beveling techniques. Manual cutting becomes the only option, making manual beveling an essential choice in specific areas. However, the precision control in traditional manual beveling relies heavily on the operator's cutting skills and accumulated experience. Therefore, manual beveling has the following drawbacks:

[0003] 1. When conventional equipment cannot be used, manual beveling requires a high level of skill, professional ethics, physical strength, and endurance from the operator. Due to varying skill levels among operators, the quality and efficiency of manually cut bevels in confined areas can differ significantly.

[0004] 2. The flatness, straightness, smoothness, and bevel angle of the bevel are difficult to meet the design requirements, which increases the effective time loss of subsequent grinding and repair work.

[0005] 3. In beveling within confined areas, to achieve a more perfect cutting effect, operators must maintain a steady hand gesture. Typically, one hand controls the torch, while the other hand's thumb and little finger act as a support point for beveling. During this process, due to space constraints and changes in the cutting path direction, controlling the distance between the nozzle and the steel plate is difficult. Too close, and the upper edge of the bevel is prone to oxidation; too far, and the bevel becomes uneven. Instability of the torch during cutting results in an unsmooth bevel formation, with bevel angle dimensions exceeding tolerance requirements. When using the hand for support, the distance between the nozzle and the hand is too close, and the flame temperature exceeds the body's tolerance, preventing long-distance continuous cutting.

[0006] 4. In beveling in curved areas and confined spaces, the working path for beveling is dynamically changing due to the construction environment. This device aims to improve the quality, efficiency, and labor intensity of beveling in curved areas and confined spaces, complementing high-efficiency beveling equipment. The verticality of the support is approximate, primarily determined by the worker's cutting skills and proficiency in beveling. Originally, a support was installed at this location to ensure verticality. However, in actual construction, this fixture is designed for curved areas and confined spaces, where various structural reinforcing ribs and connecting plates for adjusting weld flatness can significantly limit the effectiveness of the support. This device prioritizes a simple, lightweight, and flexible structure, facilitating effective beveling in dynamic cutting environments, thus eliminating the need for a support at the support location. The verticality of the support to the workpiece can be controlled using a square.

[0007] A search revealed that Chinese utility model application CN218926514U discloses an adjustable template device for beveling steel components. The device describes a guide slot mold and an auxiliary slot mold that provide linear guidance for the torch's translation. An angle adjustment screw adjusts the angle between the guide slot mold or auxiliary slot mold and the side of the L-shaped mold base to change the inclination angle between the torch nozzle axis and the steel surface. A height adjustment bolt adjusts the distance between the slot mold support and the top surface of the L-shaped mold base to change the distance between the torch nozzle and the steel surface. The slot mold support is connected to the L-shaped mold base via the height adjustment bolt. The device is placed on the surface of the steel profile to provide positioning for the cutting torch. Although this utility model improves the quality and efficiency of manual beveling to a certain extent, it is only applicable to beveling steel components such as rectangular steel pipes and H-beams. This is because the device has high requirements for the flatness of the steel profile surface itself; otherwise, it is difficult to operate and will affect the accuracy of beveling. Therefore, the device is not suitable for complex working conditions such as workpieces with ramps or other obstacles, narrow working areas, or curved areas, and has certain limitations. Summary of the Invention

[0008] To address the problems existing in the prior art, the present invention aims to provide a manual beveling auxiliary device and its usage method, which overcomes the problem that the angle and smoothness of the beveling cannot be well controlled in manual cutting operations in areas with inconvenient construction, narrow areas, and curved areas.

[0009] To achieve the above and other related objectives, the present invention adopts the following technical solution:

[0010] This invention provides a manual beveling aid and its usage method, comprising the following steps:

[0011] S1. Prepare a manual beveling aid device:

[0012] The auxiliary device includes a support body, a connecting body, and a rotating body. The support body is a right-angled component with internal threads at both ends. The support body includes a vertical section and a horizontal section. A height adjusting bolt is threadedly fixed to the bottom end of the vertical section of the support body. The height adjusting bolt has a first wing nut and its lower end is tapered. One end of the connecting body has a horizontal adjusting bolt. The connecting body is movably connected to the top end of the horizontal section of the support body via the horizontal adjusting bolt. The horizontal adjusting bolt has a locking nut. A clamping component is fixed to the side of the rotating body. An angle guide bolt is fixed to the back of the rotating body. An angle adjusting groove is formed on the rotating body. The angle adjusting groove is arc-shaped, and the center of the arc-shaped angle adjusting groove coincides with the central axis of the angle guide bolt. The groove edge is provided with angle scale lines marked with numbers; the connecting body has a guide hole that matches the angle guide bolt, the angle guide bolt passes through the guide hole and is locked and fixed by a third wing nut, the front of the connecting body is fixed with an angle indicator bolt, the angle indicator bolt passes through the angle adjustment groove and is locked and fixed by a second wing nut, so that the front of the connecting body is in close contact with the back of the rotating body; the cross-sectional shape of the angle indicator bolt is irregular, and a pointer-type washer is provided between the angle indicator bolt and the second wing nut, the pointer-type washer has a positioning hole, the positioning hole has the same cross-sectional shape as the angle indicator bolt, and when the pointer-type washer is fitted onto the angle indicator bolt through the positioning hole, the tip of the pointer-type washer always points to the angle scale line;

[0013] S2. Fix the device to the cutting torch: Install the device at the front end of the cutting torch near the cutting nozzle using the clamping parts on the rotating body;

[0014] S3. Using the cutting edge line as a reference, adjust the angle, lateral length and verticality of the device in sequence according to the required cutting bevel angle, the on-site construction environment and the height of the cutting nozzle from the workpiece to be cut.

[0015] S4. Using the contact point between the cone tip and the workpiece to be cut as a reference, draw a travel trajectory line parallel to the cutting edge.

[0016] S5. Using the walking trajectory line as a reference, adjust the lateral length of the device to meet the lateral distance between the cutting nozzle and the bevel cutting seam required for construction. Place the cone tip on the walking trajectory line and move the device at a constant speed along the walking trajectory line to complete the bevel cutting operation.

[0017] As a preferred technical solution, the clamping component in step S1 includes a fixed clamping plate and a movable clamping plate. The outer side of the fixed clamping plate is fixedly connected to the outer right-angle side of the rotating body. The inner side of the fixed clamping plate is provided with a fixing bolt perpendicular to the inner side of the fixed clamping plate. The movable clamping plate is provided with a through hole that matches the fixing bolt. The movable clamping plate is sleeved on the fixing bolt through the through hole and locked and fixed on the fixed clamping plate by a fourth butterfly nut.

[0018] In step S2, the specific steps include: placing the cutting torch tip between the movable clamp and the fixed clamp, and clamping and fixing the cutting torch tip by tightening the fourth wing nut.

[0019] As a preferred technical solution, the specific steps of step S3 include:

[0020] S3-1. Adjust the angle of the device to meet the cutting bevel opening angle requirements for construction, and adjust the tip of the pointer-type shim to the corresponding angle mark on the angle scale line;

[0021] S3-2. Adjust the horizontal length of the device to meet the requirements of the on-site construction environment, and adjust the perpendicularity between the device and the workpiece to be cut so that the vertical section of the support is perpendicular to the plane of the workpiece to be cut.

[0022] S3-3. Adjust the height of the device to meet the required distance between the cutting nozzle and the workpiece to be cut.

[0023] As a further preferred technical solution, the specific steps of step S3-1 include: first loosening the second and third wing nuts so that the angle adjusting bolt and the pointer-type washer can move within the angle adjusting groove; rotating the rotating body to adjust the tip of the pointer-type washer to the angle scale line corresponding to the required angle of the bevel; after adjusting the angle of the device to the correct position, locking and fixing the rotating body and the connecting body with the second and third wing nuts to complete the adjustment of the cutting angle.

[0024] As a further preferred technical solution, the specific steps of step S3-2 include: first loosening the locking nut, rotating the support body around the central axis of the transverse adjusting bolt to adjust the transverse length of the device, adjusting the transverse length of the device according to the on-site construction environment, so that there are no obstacles on the travel path of the device on the workpiece to be cut; after aligning the cutting nozzle on the cutting torch with the cutting edge line, observing and rotating the support body with a square until the perpendicularity between the vertical section of the support body and the plane of the workpiece to be cut is corrected, and then locking the locking nut and abutting it against the connection end face between the transverse adjusting bolt and the support body.

[0025] As a further preferred technical solution, the specific steps of step S3-3 include: first loosening the first wing nut, rotating the height adjustment bolt until the height of the device matches the required distance between the cutting nozzle and the workpiece to be cut, and then locking the first wing nut and abutting it against the connection end face between the height adjustment bolt and the support body.

[0026] As a preferred technical solution, the specific steps of step S5 include:

[0027] S5-1. Using the walking trajectory line as a reference, adjust the lateral length of the device to meet the lateral distance between the cutting nozzle and the bevel cutting seam required for construction.

[0028] S5-2. Place the cone tip of the height adjustment bolt against the travel trajectory line and re-measure the verticality before cutting;

[0029] S5-3. Move the device at a constant speed along the walking trajectory line so that the cone tip is always perpendicular to the walking trajectory line to complete the bevel cutting.

[0030] As a further preferred technical solution, the specific steps of step S5-1 include: adjusting the lateral length of the device by loosening the locking nut and rotating the support body, using the travel trajectory line as a reference, until the lateral length of the device is adjusted to meet the lateral distance between the cutting nozzle and the bevel cut required for construction, controlling the lateral distance between the cutting torch flame and the cutting edge line, and adjusting the lateral width of the cutting bevel.

[0031] As a further preferred technical solution, in step S5-3, when opening a long straight slope, the device is placed against a long mountain with a straight surface and moves at a constant speed.

[0032] As described above, the present invention has the following beneficial effects:

[0033] (1) The present invention provides a manual beveling auxiliary device and its usage method, which can effectively prevent hand injuries caused by high temperature during cutting, and has a wide range of applications and high work efficiency. By using the usage method of this device, the quality of beveling in curved areas and narrow spaces can be improved, the smoothness of the beveling can be enhanced, the synchronization between the cutting flame and the cutting edge line during beveling can be strengthened, and the angle deviation during beveling can be reduced. At the same time, by using the usage method of this device, a longer beveling distance can be completed at once, reducing the need for repeated adjustments and positioning, thereby improving work efficiency. Furthermore, the significant increase in the single cutting distance not only improves the labor intensity of the operator, but also reduces the amount of subsequent repair work.

[0034] (2) The present invention provides a manual beveling auxiliary device and its usage method. The device of the present invention has the advantages of simple structure, small size, light weight, flexibility and easy control. In order to take into account the personal habits of the operators, the direction and position of the tooling installed on the cutting torch can be easily changed according to the needs of the operators without taking up too much space. In addition, the device can not only flexibly adjust the height of the cutting nozzle from the workpiece to be cut, the lateral dimension of the cutting nozzle from the cutting kerf and the required cutting bevel angle according to the construction requirements, but also be applicable to manual beveling work in different working environments such as different plate thicknesses and different angles. It improves the flexibility and adaptability of operation, and can effectively deal with and improve the defects of manual beveling of arc workpieces such as unstable hand gestures at the turning point and poor cutting smoothness. It can better meet the operational needs of beveling work in narrow working environments, and significantly improve work efficiency and labor intensity.

[0035] (3) The present invention provides a manual cutting bevel opening auxiliary device and its usage method. Through the tight locking mechanism of the first wing nut and the locking nut, the device of the present invention avoids the loosening or deformation of the connection between the height adjustment bolt and the lateral adjustment bolt at both ends of the support body due to collision during the cutting process, thereby further improving the stability and reliability of the device.

[0036] (4) The present invention provides a manual cutting bevel opening auxiliary device and its usage method. This device can also complement conventional cutting backing, and plays a positive role in reducing the difficulty of opening long straight bevels in narrow construction areas, improving practicality, and also playing a certain role in reducing costs and increasing efficiency. Attached Figure Description

[0037] Figure 1 This is a frontal three-dimensional structural diagram of an auxiliary device for manually cutting bevels according to the present invention.

[0038] Figure 2 This is a three-dimensional structural diagram of the back of a manual beveling device according to the present invention.

[0039] Figure 3 This is a magnified view of the pointer-type pad and the angle scale line in this invention.

[0040] Figure 4 This is a schematic diagram showing the device after it has been fixed to the cutting torch in this invention.

[0041] The specific annotations in the attached drawings are as follows: 1. Support body; 11. First wing nut; 12. Height adjustment bolt; 13. Locking nut; 2. Connecting body; 21. Angle indicator bolt; 22. Pointer-type washer; 23. Second wing nut; 24. Lateral adjustment bolt; 3. Rotating body; 31. Angle guide bolt; 32. Clamping component; 33. Fixed clamp; 34. Flexible clamp; 35. Fourth wing nut; 36. Fixed bolt; 37. Angle scale line; 38. Third wing nut; 39. Angle adjustment groove; 4. Cutting torch; 5. Workpiece to be cut; 6. Cutting edge line; 7. Travel trajectory line. Detailed Implementation

[0042] To better understand the purpose, structure, and function of this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments.

[0043] In the description of this invention, it should be noted that the positional relationships indicated by terms such as "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" are based on the positional relationships shown in the accompanying drawings and are only for the purpose of facilitating the description of the embodiments of this invention and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific direction, and therefore should not be construed as a limitation of this invention.

[0044] Example 1

[0045] like Figures 1 to 3 As shown, this embodiment provides a manual beveling auxiliary device for assisting in beveling operations on the workpiece 5 to be cut along the cutting edge 6 in narrow spaces and in curved areas using a manual cutting torch 4. The auxiliary device includes a support body 1, a connecting body 2, and a rotating body 3.

[0046] The support body 1 is a right-angled component with internal threads at both ends. The right-angled component is inverted L-shaped. The support body 1 includes a vertical section and a horizontal section. A height adjusting bolt 12 is threadedly fixed to the bottom end of the vertical section of the support body 1. The height adjusting bolt 12 has an external thread that matches the internal thread of the vertical section of the support body 1. A first wing nut 11 is provided on the height adjusting bolt 12. The height adjusting bolt 12 is locked and fixed by the first wing nut 11 when adjusting the height of the support. In this embodiment, the height adjusting bolt 12 is made of stainless steel. The lower end of the bolt 12 is tapered, and the tip of the tapered body can be machined by cutting, so as to facilitate the movement of the height adjustment bolt 12 in a direction parallel to the cutting edge 6; one end of the connecting body 2 is provided with a transverse adjustment bolt 24, which has an external thread that matches the internal thread of the horizontal section of the support body 1. The connecting body 2 is movably connected to the top end of the horizontal section of the support body 1 through the transverse adjustment bolt 24. The transverse adjustment bolt 24 is provided with a locking nut 13, which is used to lock the transverse adjustment bolt 24 after it is adjusted to the correct position.

[0047] The rotating body 3 is in the shape of a right-angled sector. A clamping member 32 is fixed to one right-angled side of the rotating body 3. The clamping member 32 includes a fixed clamping plate 33 and a movable clamping plate 34. The outer side of the fixed clamping plate 33 is fixedly connected to the outer right-angled side of the rotating body 3. The inner side of the fixed clamping plate 33 is provided with a fixing bolt 36 perpendicular to the inner side of the fixed clamping plate 33. The movable clamping plate 34 has a through hole that matches the fixing bolt 36. The movable clamping plate 34 is sleeved on the fixing bolt 36 through the through hole and locked and fixed to the fixed clamping plate 33 by a fourth butterfly nut 35. A gap is provided between the fixed clamping plate 33 and the movable clamping plate 34. The gap has a shape that matches the cross-section of the cutting torch 4, thereby improving the clamping stability of the clamping member 32 on the cutting torch 4.

[0048] An angle guide bolt 31 is fixed to the back of the rotating body 3, and an angle adjustment groove 39 is formed on the rotating body 3. The angle adjustment groove 39 is arc-shaped, and the center of the arc-shaped angle adjustment groove 39 coincides with the central axis of the angle guide bolt 31. The groove edge of the angle adjustment groove 39 is provided with angle scale lines 37 marked with numbers to facilitate adjustment of the cutting angle parameters before cutting. A guide hole matching the angle guide bolt 31 is formed on the connecting body 2. The angle guide bolt 31 passes through the guide hole and is locked and fixed by a third wing nut 38. An angle indicator bolt 21 is fixed to the front of the connecting body 2. The angle indicator bolt 21 passes through the angle adjustment groove 39 and is locked and fixed by a second wing nut 23, so that the front of the connecting body 2 is in close contact with the back of the rotating body 3. The angle guide bolt 31 and the angle indicator bolt 21 form a combined force, which can make the overall structure more stable and avoid the risk of collision, wire winding, and deformation that may occur when connecting the connecting body 2 and the rotating body 3 with a single bolt. The cross-sectional shape of the angle indicating bolt 21 is irregular. In this embodiment, the shape of the angle indicating bolt 21 can be made by cutting. A pointer-type washer 22 is also provided between the angle indicating bolt 21 and the second wing nut 23. The pointer-type washer 22 has a positioning hole. The positioning hole has the same cross-sectional shape as the angle indicating bolt 21. When the pointer-type washer 22 is fitted onto the angle indicating bolt 21 through the positioning hole, the tip of the pointer-type washer 22 always points to the angle scale line 37. According to the angle scale pointed to by the tip of the pointer-type washer 22, it can be determined whether the required cutting bevel angle has been adjusted in place, which improves the accuracy of the device angle adjustment and thus improves the bevel cutting quality.

[0049] Example 2

[0050] This embodiment provides a method for using a manual beveling auxiliary device according to Embodiment 1. It assists in beveling workpieces 5 along the cutting edge 6 using a manual cutting torch 4 in confined spaces and curved areas. The device's travel path is dynamically changing. The method includes the following steps:

[0051] S1, such as Figure 1 and Figure 3 As shown, a manual beveling aid device as described in Example 1 is prepared:

[0052] S2, such as Figure 4 As shown, the device is clamped and fixed to the cutting torch 4:

[0053] The device is installed at the front end of the cutting torch 4 near the cutting nozzle by the clamping part 32 on the rotating body 3, which facilitates the opening of bevels in narrow areas and curved areas, and improves the range of use and portability of the device; specifically, the front end of the cutting torch 4 is placed between the movable clamping piece 34 and the fixed clamping piece 33, and the front end of the cutting torch 4 is clamped and fixed by tightening the fourth wing nut 35.

[0054] The direction and position of the device installed on the cutting torch 4 can be adjusted according to the on-site construction environment and the operator's operating habits to adapt to the operational needs of different working environments. It is suitable for manual beveling work with different plate thicknesses and angles. Specifically, in the on-site construction environment, for example, if there is an obstacle on the right side of the workpiece 5 to be cut, resulting in no operating space, the device can be installed on the left side of the cutting torch 4. In terms of the operator's operating habits, for example, if the operator's dominant hand is left-handed, the grip of the cutting torch 4 can be adjusted to the dominant hand side before clamping the device onto the cutting torch 4.

[0055] S3. Using the cutting edge line 6 as a reference, adjust the angle, lateral length and verticality of the device in sequence according to the required cutting bevel angle, the on-site construction environment and the height of the cutting nozzle from the workpiece 5 to be cut, so that the lower cone tip of the device height adjustment bolt 12 falls vertically on the flat plate surface of the workpiece 5 to be cut.

[0056] S3-1. Adjust the angle of the device to meet the cutting bevel opening angle requirements for construction. Adjust the tip of the pointer-type shim 22 to the corresponding angle mark on the angle scale line 37: First, loosen the second wing nut 23 and the third wing nut 38 so that the angle adjusting bolt and the pointer-type shim 22 can move in the angle adjusting groove 39. Rotate the rotating body 3 to adjust the tip of the pointer-type shim 22 to the angle mark on the angle scale line 37 corresponding to the required bevel opening angle. After adjusting the angle of the device to the correct position, lock the rotating body 3 and the connecting body 2 with the second wing nut 23 and the third wing nut 38 to complete the adjustment of the cutting angle.

[0057] S3-2. Initially adjust the lateral length of the device to suit the on-site construction environment, and initially adjust the perpendicularity between the device and the workpiece 5 to be cut, so that the vertical section of the support body 1 is perpendicular to the plane of the workpiece 5 to be cut: First, loosen the locking nut 13, and rotate the support body 1 around the central axis of the lateral adjustment bolt 24 to adjust the lateral length of the device. Adjust the lateral length of the device according to the on-site construction environment, so that there are no obstacles on the travel path of the device on the workpiece 5 to be cut. The obstacles include, but are not limited to, the board or protruding structure welded to the workpiece 5 to be cut; after aligning the cutting nozzle on the cutting torch 4 with the cutting edge line 6, observe and rotate the support body 1 through a square until the perpendicularity between the vertical section of the support body 1 and the plane of the workpiece 5 to be cut is corrected. Then, tighten the locking nut 13 and abut it against the connection end face between the lateral adjustment bolt 24 and the support body 1.

[0058] S3-3. Adjust the height of the device to meet the required distance between the cutting nozzle and the workpiece 5 to be cut: First, loosen the first wing nut 11, rotate the height adjusting bolt 12 until the height of the device meets the required distance between the cutting nozzle and the workpiece 5 to be cut. Then, tighten the first wing nut 11 and abut it against the connection end face between the height adjusting bolt 12 and the support body 1.

[0059] S4. Using the contact point between the lower cone tip of the device height adjustment bolt 12 and the flat surface of the workpiece 5 to be cut as a reference, draw a travel trajectory line 7 parallel to the cutting edge line 6.

[0060] S5. Place the cone tip on the travel trajectory line 7, adjust the lateral length of the device to meet the lateral distance between the cutting nozzle and the bevel cut required for construction, place the cone tip on the travel trajectory line 7, and move the device at a constant speed along the travel trajectory line 7 to complete the bevel cutting operation:

[0061] S5-1. Using the travel trajectory line 7 as a reference, adjust the lateral length of the device to meet the lateral distance between the cutting nozzle and the bevel cut required for construction: Using the travel trajectory line 7 as a reference, adjust the lateral length of the device by loosening the locking nut 13 and rotating the support body 1 until the lateral length of the device meets the lateral distance between the cutting nozzle and the bevel cut required for construction. By readjusting the lateral length of the device, the lateral distance between the flame of the cutting torch 4 and the cutting edge line 6 can be controlled while ensuring that there are no obstacles on the device's travel route, thereby ensuring the lateral width of the cutting bevel.

[0062] S5-2. Place the cone tip of the height adjustment bolt 12 against the travel trajectory line 7, and re-measure the perpendicularity before cutting: Place the cone tip of the height adjustment bolt 12 against the travel trajectory line 7, and use a square to re-measure the perpendicularity between the support body 1 and the workpiece 5 to be cut, so that the vertical section of the support body 1 is perpendicular to the plane of the workpiece 5 to be cut and remains stable.

[0063] S5-3. The device moves at a constant speed along the walking trajectory line 7, so that the cone tip is always perpendicular to the walking trajectory line 7, and the bevel cutting is completed: By controlling the cone tip to move vertically and at a constant speed along the walking trajectory line 7, the cutting flame of the cutting torch 4 moves at a constant speed along the parallel cutting edge line 6. The ideal bevel can be obtained through synchronous movement, thereby ensuring the cutting quality. In addition, the tight locking of the first butterfly nut 11 and the locking nut 13 in the aforementioned steps can effectively prevent the loosening or deformation of the connection between the height adjustment bolt 12 and the lateral adjustment bolt 24 fixed at both ends of the support body 1 due to collisions during the cutting process.

[0064] In other embodiments, when creating a long straight bevel, the device is placed against a long support with a straight surface and moved at a constant speed to perform a long bevel cutting operation; the long support includes, but is not limited to, materials with straight surfaces such as angle iron or channel steel.

[0065] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Those skilled in the art can make various changes or equivalent substitutions to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of this invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are protected by this invention.

Claims

1. A method of using a manual beveling auxiliary device, used to assist in beveling operations on a workpiece (5) to be cut along the cutting edge (6) using a manual cutting torch (4) in confined spaces and in curved areas, characterized in that, Includes the following steps, S1. Prepare a manual beveling aid device: The auxiliary device includes a support body (1), a connecting body (2), and a rotating body (3). The support body (1) is a right-angled component with internal threads at both ends. The support body (1) includes a vertical section and a horizontal section. A height adjusting bolt (12) is threadedly fixed to the bottom end of the vertical section of the support body (1). A first wing nut (11) is provided on the height adjusting bolt (12). The lower end of the height adjusting bolt (12) is conical. A horizontal adjusting bolt (24) is provided at one end of the connecting body (2). The connecting body (2) is connected by a horizontal adjusting bolt (24). A lateral adjusting bolt (24) is movably connected to the top of the horizontal section of the support body (1), and a locking nut (13) is provided on the lateral adjusting bolt (24); a clamping member (32) is fixed to the side of the rotating body (3), an angle guide bolt (31) is fixed to the back of the rotating body (3), and an angle adjusting groove (39) is provided on the rotating body (3). The angle adjusting groove (39) is arc-shaped, and the center of the arc-shaped angle adjusting groove (39) coincides with the central axis of the angle guide bolt (31). The groove (39) has angle scale lines (37) with numerical markings on its edge; the connecting body (2) has a guide hole that matches the angle guide bolt (31), the angle guide bolt (31) passes through the guide hole and is locked and fixed by a third wing nut (38), and an angle indicator bolt (21) is fixed on the front of the connecting body (2), the angle indicator bolt (21) passes through the angle adjustment groove (39) and is locked and fixed by a second wing nut (23), so that the front of the connecting body (2) is aligned with the rotating body. (3) Back-side fitting and fixing; the cross-sectional shape of the angle indicator bolt (21) is irregular, and a pointer-type washer (22) is provided between the angle indicator bolt (21) and the second butterfly nut (23). The pointer-type washer (22) has a positioning hole, and the positioning hole has the same cross-sectional shape as the angle indicator bolt (21). When the pointer-type washer (22) is fitted onto the angle indicator bolt (21) through the positioning hole, the tip of the pointer-type washer (22) always points to the angle scale line (37). S2. Fix the device to the cutting torch (4): Install the device at the front end of the cutting torch (4) near the cutting nozzle using the clamping part (32) on the rotating body (3); S3. Based on the cutting edge line (6), adjust the angle, lateral length and verticality of the device in sequence according to the cutting bevel opening angle required for construction, the on-site construction environment and the height of the cutting nozzle from the workpiece to be cut (5). S4. Using the contact point between the cone tip and the workpiece to be cut (5) as a reference, draw a travel trajectory line (7) parallel to the cutting edge line (6); S5. Place the cone tip on the walking trajectory line (7), adjust the lateral length of the device to meet the lateral distance between the cutting nozzle and the bevel cutting seam required for construction, place the cone tip on the walking trajectory line (7), and move the device at a constant speed along the walking trajectory line (7) to complete the bevel cutting operation.

2. The method of using the manual beveling auxiliary device according to claim 1, characterized in that, The clamping member (32) in step S1 includes a fixed clamping piece (33) and a movable clamping piece (34). The outer side of the fixed clamping piece (33) is fixedly connected to the outer right-angle side of the rotating body (3). The inner side of the fixed clamping piece (33) is provided with a fixing bolt (36) perpendicular to the inner side of the fixed clamping piece (33). The movable clamping piece (34) is provided with a through hole that matches the fixing bolt (36). The movable clamping piece (34) is sleeved on the fixing bolt (36) through the through hole and locked and fixed on the fixed clamping piece (33) by a fourth butterfly nut (35). In step S2, the specific steps include: placing the front end of the cutting torch (4) between the movable clamp (34) and the fixed clamp (33), and clamping and fixing the front end of the cutting torch (4) by tightening the fourth wing nut (35).

3. The method of using the manual beveling auxiliary device according to claim 1, characterized in that, The specific steps of step S3 include: S3-1. Adjust the angle of the device to meet the cutting bevel opening angle requirements for construction, and adjust the tip of the pointer-type shim (22) to the corresponding angle mark on the angle scale line (37); S3-2. Adjust the horizontal length of the device to meet the on-site construction environment, and adjust the perpendicularity between the device and the workpiece (5) to be cut so that the vertical section of the support (1) is perpendicular to the plane of the workpiece (5) to be cut. S3-3. Adjust the height of the device to meet the required distance between the cutting nozzle and the workpiece to be cut (5) for construction.

4. The method of using the manual beveling auxiliary device according to claim 3, characterized in that, The specific steps of step S3-1 include: first loosening the second wing nut (23) and the third wing nut (38) so that the angle adjusting bolt and the pointer-type washer (22) can move in the angle adjusting groove (39); rotating the rotating body (3) and adjusting the tip of the pointer-type washer (22) to the angle scale line (37) corresponding to the required angle of the bevel; after adjusting the angle of the device to the correct position, locking the rotating body (3) and the connecting body (2) with the second wing nut (23) and the third wing nut (38) to complete the adjustment of the cutting angle.

5. The method of using the manual beveling auxiliary device according to claim 3, characterized in that, The specific steps of step S3-2 include: first loosening the locking nut (13), rotating the support body (1) around the central axis of the transverse adjusting bolt (24) to adjust the transverse length of the device, adjusting the transverse length of the device according to the on-site construction environment, so that there are no obstacles on the travel path of the device on the workpiece (5) to be cut; after aligning the cutting nozzle on the cutting torch (4) with the cutting edge line (6), observing and rotating the support body (1) with a square until the perpendicularity between the vertical section of the support body (1) and the plane of the workpiece (5) to be cut is corrected, and then locking the locking nut (13) and abutting it against the connection end face between the transverse adjusting bolt (24) and the support body (1).

6. The method of using the manual beveling auxiliary device according to claim 3, characterized in that, The specific steps of step S3-3 include: first loosening the first wing nut (11), rotating the height adjustment bolt (12) until the height of the device matches the required distance between the cutting nozzle and the workpiece (5) to be cut, and then locking the first wing nut (11) and abutting it against the connection end face between the height adjustment bolt (12) and the support body (1).

7. The method of using the manual beveling auxiliary device according to claim 1, characterized in that, The specific steps of step S5 include: S5-1. Using the walking trajectory line (7) as a reference, adjust the lateral length of the device to meet the lateral distance between the cutting nozzle and the bevel cutting joint required for construction. S5-2, Place the cone tip of the height adjustment bolt (12) against the travel trajectory line (7), and re-measure the verticality before cutting; S5-3. Move the device at a constant speed along the walking trajectory line (7) so that the cone tip is always perpendicular to the walking trajectory line (7) to complete the bevel cutting.

8. The method of using the manual beveling auxiliary device according to claim 7, characterized in that, The specific steps of step S5-1 include: adjusting the lateral length of the device by loosening the locking nut (13) and rotating the support body (1), taking the travel trajectory line (7) as a reference, until the lateral length of the device is adjusted to meet the lateral distance between the cutting nozzle and the bevel cut required for construction, controlling the lateral distance between the flame of the cutting torch (4) and the cutting edge line (6), and adjusting the lateral width of the cutting bevel.

9. The method of using the manual beveling auxiliary device according to claim 7, characterized in that, In step S5-3, when opening a long straight slope, the device is placed against a long, straight mountain and moved at a constant speed.

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