All-weather welding bead removal machine with straight-line driving capability

Abstract

The present invention relates to an all-weather welding bead removal machine with straight-line movement capability, and more specifically, to a new concept of technology that enables reliable straight-line movement even when working with base materials where it is difficult to fix the welding bead removal machine using magnets, thereby quickly and safely removing welding beads. [Solution] The present invention is a method for solving the above problem, and is characterized by exploring a technology that enables smooth removal of weld beads without fixing using another magnet, by having a cutter perpendicularly coupled to a cutter shaft that rotates horizontally by receiving rotational power from an actuator through a gear combination, rotate in the same direction as the travel direction of the weld bead removal machine while ensuring straight-line travel.

Description

TECHNICAL FIELD

[0001] The present invention relates to a new concept technology that reliably exhibits straight traveling performance and removes weld beads quickly and safely even when working on a base material that is difficult to fix with a weld bead removing machine using magnetics.

BACKGROUND ART

[0002] Generally, at sites such as city gas pipe construction sites and industrial plant piping construction sites, as a preliminary work for welding, a base material (metal plate material, pipe, etc.) of a relatively large standard is cut to a length, and then a beveling operation is performed to cut a welded surface (chamfered surface) on the base material at a predetermined angle to form a weld groove (root), so that a worker can perform butt welding on the welded surfaces formed on the base material to integrally connect a pair of easily cut base materials to each other.

[0003] Here, the weld metal formed in the weld groove by the welding operation is referred to as a weld bead. A normal weld bead protrudes above the surface of the base material, and in particular, a portion with poor welding protrudes more than other portions, and the weld bead may scatter around and adhere to the surface of the base material to form an unnecessary protrusion.

[0004] Therefore, another post-processing operation that must be performed to remove the weld bead and unnecessary protrusions to maintain a horizontal plane with the surface of the base material is required.

[0005] Most of the conventional methods for removing such weld beads and protrusions are primitive methods that are manually performed by a worker using a grinder depending on the worker's experience and skill, but this causes many side effects. As a prior art document for solving this problem, "Korean Patent Registration No. 1081345, Title: Weld Bead and Protrusion Remover with Safe Travel Function", which is a previously registered invention of the applicant of the present invention, is disclosed.

[0006] The aforementioned prior art document discloses a useful technique that allows a safety guide, which guides the straight-line movement of the main body head, to be temporarily fixed to the surface of the base material using magnetism only during operation, and that the safety guide can guide the accurate straight-line movement of the welding bead and protrusion removal machine. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Korean Patent Registration No. 1081345 [Overview of the project] [Problems that the invention aims to solve]

[0008] However, the above prior art has a problem in that, due to the characteristics of the base material, it is difficult to attach the magnetic material, making straight-line movement impossible. Furthermore, during operation, the centrifugal force of the cutter rotating horizontally causes the main body head to be biased to one side (the side in the direction of rotation), leading to safety accidents such as injuries from it bouncing.

[0009] Furthermore, because the weld bead must be removed for the entire length of the safety guide, the magnetic force must be released, the position must be moved, and then the work must be resumed while the guide is fixed in place, the work inevitably has to be interrupted midway, leading to a problem of reduced work efficiency.

[0010] Furthermore, the aforementioned prior art is only capable of adhering magnets to sheet materials; in the case of pipes, adhesion is difficult, and it is not possible to remove the weld beads of the pipes, resulting in a decrease in the effectiveness of the product. [Means for solving the problem]

[0011] As a means to solve the above problems, the present invention seeks a technology that enables smooth removal of weld beads without the need for separate magnetic fixation, by having a cutter perpendicularly coupled to a cutter shaft that rotates horizontally in response to the rotational power transmitted from an actuator by a gear combination, while ensuring straight-line movement by rotating in the same direction as the travel direction of the weld bead removal machine.

[0012] Furthermore, the present invention seeks to explore a technology that allows for precise guidance of linear movement along the longitudinal direction by freely adjusting the tilt angle of a pair of skid plates, which are installed in the front-rear direction on both sides of skid plate support bases attached to the lower front and rear surfaces of side plates that are in close contact with both sides of the gearbox, thereby enabling the skid plates to be placed on both sides of the surface of a base material such as a pipe.

[0013] Furthermore, the present invention seeks a technique to enable smooth travel along the longitudinal direction while the base material, such as a pipe, is mounted, by adjusting the vertical position of the running rollers while raising and lowering the running roller support base along a support base lifting holder installed at the rear upper end of the pair of skid plates described above. [Effects of the Invention]

[0014] According to the present invention, the cutter, which is installed in a vertical position, rotates in the same direction as the travel direction of the welding bead removal machine, thereby ensuring accurate straight-line travel. Needless to say, welding beads can be smoothly removed without the need for fixing with another magnet. Furthermore, the bouncing phenomenon of the welding bead removal machine due to the cutter's misalignment is prevented, eliminating the risk of injury and safety accidents, and reducing worker fatigue.

[0015] Furthermore, the present invention not only eliminates the need for fixing and dismantling operations using other magnetic devices, but also eliminates limitations on the distance the welding bead removal machine travels in a single cycle, minimizing unnecessary work interruptions and significantly improving work efficiency, thereby providing the benefit of improved economic efficiency through reduced labor costs.

[0016] Furthermore, the present invention is capable of sliding along both side surfaces of a base material such as a pipe by a method of adjusting the tilt angle of a pair of skid plates that slide while placed on the surface of the base material, so that the weld bead of the pipe can be removed, and it provides the effect of excellent applicability that allows working on various base materials (plate-shaped, pipe-shaped, etc.) in all weather conditions.

[0017] Furthermore, the present invention secures accurate straight traveling performance along the longitudinal direction of the pipe and provides efficiency and safety of the weld bead removal operation by a method of adjusting the vertical positions of a pair of traveling rollers installed at the rear end of the skid plate, such that the pair of traveling rollers travels along both sides of the surface of the pipe when removing the weld bead of a base material such as a pipe. Brief Description of the Drawings

[0018] [Figure 1] It is a perspective view of a weld bead removing machine to which the present invention is applied. [Figure 2] It is a front view of the weld bead removing machine of the present invention. [Figure 3] It is a right side view of the weld bead removing machine of the present invention. [Figure 4] It is a bottom view of the weld bead removing machine of the present invention. [Figure 5] It is a plan sectional view showing the internal structure of the weld bead removing machine of the present invention. [Figure 6] It is a side sectional view showing the internal structure of the weld bead removing machine of the present invention. [Figure 7] It is a side sectional view of the connected state of the gear box and the removal amount regulator of the present invention. [Figure 8] It is a side sectional view of the coupled state of the cutter shaft and the cutter of the present invention. [Figure 9] It is a perspective view of the gear box of the present invention. [Figure 10] It is a front view of the gear box of the present invention. [Figure 11] It is a plan sectional view of the gear box of the present invention. [Figure 12] It is a perspective view of the bearing case of the present invention. [Figure 13] This is a rear view of the bearing case of the present invention. [Figure 14] This is a plan cross-sectional view of the bearing case of the present invention. [Figure 15] This is a side view of the pipe mounting state of the welding bead removal machine of the present invention. [Figure 16] This is a side view of the tilt angle adjustment state of the skid plate according to the present invention. [Figure 17] This is a side view of the skid plate of the present invention in the completed state of tilt angle adjustment. [Figure 18] This is a cross-sectional view of the support stand lifting holder and the running roller support stand of the present invention. [Figure 19] This is a plan cross-sectional view of the support stand lifting holder and the running roller support stand of the present invention. [Modes for carrying out the invention]

[0019] A preferred embodiment for more specifically realizing the means of solving the problems that the present invention aims to solve will be described.

[0020] The overall configuration of the welding bead removal machine R according to a preferred embodiment of the present invention can be schematically described based on the attached drawings, and it can be confirmed that it can be broadly divided into the components of the gearbox 10, actuator 20, and cutter 40.

[0021] The present invention, which has the above-described schematic configuration, will be described in more detail below in order to facilitate its implementation.

[0022] The gearbox 10 of the present invention has an actuator 20 for power generation attached to its rear end, and inside it serves as a housing that accommodates a number of gears for power transmission and a cutter shaft 30 for removing weld beads.

[0023] Inside the gearbox 10, at the front, a cutter shaft 30 is positioned perpendicular to the actuator 20 and is rotatably mounted by a combination of numerous gears, receiving rotational power from the actuator 20. The cutter shaft 30 has a portion of the cutter shaft 30 that is exposed to the cutter operating section 16, to which the cutter 40 is integrally coupled. The cutter 40, as shown in Figures 4 and 5, rotates in the same direction as the travel direction of the welding bead removal machine R while remaining vertical when viewed from above and below, ensuring straight-line travel.

[0024] Therefore, the present invention not only smoothly removes weld beads without the need for fixing and dismantling work using a separate magnet, as in the conventional method, but also prevents the weld bead removal machine R from bouncing due to cutter bias, thereby eliminating the risk of injury and safety accidents.

[0025] Here, the cutter 40 incorporates a technology that allows it to be separated from the cutter shaft 30 when the insert tip 41 wears out, in order to replace the consumable insert tip 41.

[0026] As a technical configuration for this purpose, a stepped cutter support portion 31 is formed on the outer circumferential surface of the cutter shaft 30 located in the cutter operating portion 16. The cutter 40 is fitted and coupled to this cutter support portion 31, and a cutter fixing bolt 32 is screwed into the cutter shaft 30 through a fixing cap 36 fitted to the tip of the cutter 40. By tightening this bolt, the fixing cap 36 pressurizes and fixes the side surface of the cutter 40, maintaining its integrity. Furthermore, when replacing the insert tip 41, the cutter fixing bolt 32 can be loosened to separate the cutter 40 before replacement.

[0027] Furthermore, when tightening or loosening the cutter fixing bolt 32, the cutter shaft 30 can be held in place by inserting a tool such as a wrench into the wrench groove 33 formed on the other end of the cutter shaft 30, thereby preventing the cutter shaft 30 from rotating. This allows the cutter fixing bolt 32 to be tightened or loosened smoothly.

[0028] The gearbox 10 has a pair of side plates 50 attached to both sides, and skid plate support bases 51 are integrally attached to the lower front and rear surfaces of these side plates 50, and plate-shaped skid plates 60 that slide along the surface of the base material are integrally attached to the lower ends on both sides of the skid plate support bases 51.

[0029] Here, a weld bead avoidance groove 52 is formed as a recess at the top of the central bottom surface of the skid plate support base 51 to prevent interference with weld beads that protrude above the surface of the base material. In particular, a travel aiming port 53 that is aligned in a straight line with the cutter 40 is attached to the upper end of the skid plate support base 51 located at the front. By aligning the travel aiming port 53 with the weld bead and sliding the weld bead removal machine R, this provides the effect of maintaining accuracy in the work.

[0030] Furthermore, a chip scattering prevention plate 70 is installed to block the front of the pair of side plates 50, and fixing bolts 71 pass through elongated guide holes 72 formed vertically on both sides of the chip scattering prevention plate 70 and are screwed into the front of the gearbox 10. This not only prevents chips generated when removing the weld bead from scattering to the outside, but also provides the effect of being able to check and inspect the cutter 40 for any abnormalities by lifting the chip scattering prevention plate 70 to the top and opening it. Tool input passages 17 and 57 are formed on the outer surface of one of the side plates 50 and the gearbox 10, into which a tool such as a screwdriver for tightening or loosening the cutter fixing bolt 32 can be inserted, and a chip scattering prevention plate 70a that blocks the tool input passage 57 formed in the side plate 50 is installed on the side plate 50 so as to be openable.

[0031] On the other hand, the present invention not only serves to support the gearbox 10 and cutter 40 so that they remain in a fixed position without moving up and down, but also incorporates a novel technology that selectively adjusts the vertical position of the cutter 40 to optimally adjust the amount of weld bead removed, thereby reducing the load.

[0032] As a technical configuration for this purpose, as shown in Figure 7, an upper plate 81 is integrally connected and installed at the upper ends of the pair of side plates 50 so as to cover the upper part of the gearbox 10. A removal amount adjuster 80 is installed at the upper end of the upper plate 81, the movable shaft 83 of which moves up and down according to the rotational operation of the adjustment head 82. The movable shaft 83 passes through the upper plate 81 and is integrally connected to the upper end of the gearbox 10. In response to the forward and reverse rotational operation of the adjustment head 82, the gearbox 10 and cutter 40 move up and down to freely adjust the amount of weld bead removed, and a handle 84 is attached to the front upper surface of the upper plate 81.

[0033] Here, the pair of side plates 50 described above have a pair of guide protrusions 54 formed on the front and rear of their inner surfaces, and the guide protrusions 54 fit into guide grooves 18 recessed on both sides of the gearbox 10, thereby providing the effect of smoothly guiding the vertical vertical movement of the gearbox 10.

[0034] The specific technical configuration of the gearbox 10 of the present invention described above will be explained with reference to Figures 9 to 11. A through-hole 11 through which the power shaft 21 of the actuator 20 can pass is formed in the center of the rear surface, a first gear operating part 12 connected to the through-hole 11 is formed inside on one rear side, a second gear operating part 13 connected to the first gear operating part 12 via an axial passage 12a is recessed on the other outer surface of the gearbox 10, and a number of bearing insertion grooves 14, 14a and bearing insertion parts 15 are formed on the inner surface of the second gear operating part 13 at an angle and spaced apart from each other, and a cutter operating part 16 connected to the bearing insertion part 15 is formed penetrating vertically in front of the first gear operating part 12.

[0035] Furthermore, a bearing case 90 that houses and covers a large number of bearings B is installed in the second gear operating section 13, and as shown in Figures 12 to 14, a large number of bearing insertion grooves 94, 94a, 94b and bearing insertion sections 95 are formed on the inner surface of the bearing case 90 at inclined intervals.

[0036] Here, a nut insertion portion 91 and a cover insertion groove 92 are continuously formed on one side of the bearing insertion portion 95. A nut 35 is screwed onto the tip of the cutter shaft 30, which is rotatably supported by the bearing B inserted into the bearing insertion portion 15 of the gearbox 10 and the bearing insertion portion 95 of the bearing case 90, thereby preventing the cutter shaft 30 from separating from the gearbox 10. A cutter shaft cover 93 is inserted into the cover insertion groove 92 to prevent the cutter shaft 30 from being exposed, and a wrench-through hole 93a is formed in the center of the cutter shaft cover 93.

[0037] Next, we will describe a gear combination configuration that transmits the rotational power of the actuator 20 to the cutter shaft 30 with an optimal gear ratio using a combination of numerous gears, and that ensures straight-line movement while the cutter 40 of the present invention rotates in the same direction as the travel direction of the welding bead removal machine R.

[0038] As a technical configuration for this purpose, as shown in Figure 5, the present invention integrally connects a main gear 22 to a power shaft 21 that is drawn into the first gear operating section 12 by passing through a through hole 11 of the gearbox 10, and a bearing B is installed in a bearing insertion groove 94 formed in a bearing housing 101 and a bearing case 90 installed in the first gear operating section 12, with both sides of the driven shaft 100 rotatably mounted on the bearing B, and the main gear 22 meshes with a first vertical gear 102 connected to one side of the driven shaft 100.

[0039] The second vertical gear 103 formed on the other side of the driven shaft 100 meshes with the first idler gear 111 formed on the first idler shaft 110, which is rotatably mounted on both sides of a bearing B inserted into a bearing insertion groove 14 formed in the second gear operating section 13 and a bearing insertion groove 94a formed in the bearing case 90. The first idler gear 111 meshes with the second idler gear 121 formed on the second idler shaft 120, which is rotatably mounted on both sides of a bearing B inserted into a bearing insertion groove 14a formed in the second gear operating section 13 and a bearing insertion groove 94b formed in the bearing case 90. The second idler gear 121 meshes with the third vertical gear 34 formed on the cutter shaft 30, which is rotatably mounted on both sides of a bearing B inserted into a bearing insertion section 15 formed in the second gear operating section 13 and a bearing insertion section 95 formed in the bearing case 90.

[0040] Therefore, the rotational power of the actuator 20 is transmitted to the driven shaft 100 via the main gear 22 and the first vertical gear 102, and the rotational power of the driven shaft 100 is converted at the optimal gear ratio via the second vertical gear 103, the first idler gear 111, the second idler gear 121, and the third vertical gear 34 and transmitted to the cutter shaft 30, so that the cutter 40 rotates in the same direction as the travel direction of the welding bead removal machine R and provides straight-line travel capability.

[0041] On the other hand, the present invention incorporates a novel technique that allows for precise guidance of linear movement along the longitudinal direction of a base material such as a pipe P, when the skid plates 60 are placed on both sides of the surface of the pipe P, as shown in Figure 15, as a method for freely adjusting the tilt angle of a pair of skid plates 60.

[0042] For this purpose, the technical configuration is as follows: As shown in Figures 16 and 17, a pair of skid plates 60 have tilt plates 61 integrally attached to the front and rear of the upper end of each skid plate 60. Pivot bolts 62 pass through these tilt plates 61 and screw them into the skid plate support base 51. Tilt control bolts 64 pass through guide elongated holes 63 formed in the tilt plate 61 along the circumferential direction around the pivot bolts 62 and are screwed into the skid plate support base 51.

[0043] Therefore, by adjusting the tilt angle by rotating the skid plate 60 downwards around the pivot bolt 62 with the tilt control bolt 64 released, the skid plate 60 is placed on both sides of the surface of the pipe P, regardless of the diameter of the pipe P. This provides the effect of removing the weld bead while sliding along the longitudinal direction of the base material such as the pipe P.

[0044] Furthermore, the present invention incorporates a novel technology that allows for smooth, straight-line travel along the longitudinal direction of a pipe P, regardless of the diameter of the base material such as a pipe P, without lateral movement, while being placed on both sides of the surface. This is achieved by adjusting the vertical position of the travel rollers 134 installed behind a pair of skid plates 60.

[0045] To this end, the present invention provides a technical configuration as shown in Figures 18 to 19, in which a support base lifting holder 130 is installed at the rear upper end of the pair of skid plates 60, with a guide projection 131 protruding from the center of its rear surface, and a running roller support base 132 that is in close contact with the rear surface of the support base lifting holder 130 so as to be able to move up and down, has a guide groove 133 formed in recess, into which the guide projection 131 formed on the support base lifting holder 130 fits and connects, and a running roller 134 is rotatably installed at the lower part, and a lifting control device 135 that is connected through the running roller support base 132 is screwed into one of a number of fixing holes 136 formed vertically on the support base lifting holder 130.

[0046] Therefore, by raising and lowering the running roller support base 132 to adjust the vertical position of the running roller 134, the machine can run with the running roller 134 placed on both sides of the surface of the pipe P, regardless of the curved surface specifications or the specifications of the pipe P. This prevents the welding bead removal machine R from flowing from side to side and ensures accurate straight-line running along the longitudinal direction of the pipe P.

[0047] Herein, the running roller 134 of the present invention is designed so that, regardless of the diameter of the pipe P, the center of the running roller 134 is always placed on the circumferential surface of the pipe P, allowing it to run smoothly. The outer roller surface 134a is formed in a curved shape, thereby improving the smoothness of the run and preventing distortion of the running roller 134 due to uneven load distribution, thus improving durability. [Explanation of Symbols]

[0048] B bearing P Pipe R Weld Bead Removal Machine 10 Gearbox 11 Through Holes 12 First gear operating section 13. Second gear operating section 14, 14a, 94, 94a, 94b Bearing insertion grooves 15, 95 Bearing insertion section 16 Cutter operating part 17 Tool input routes 18, 133 Guide grooves 20 Actuators 21 Power shaft 22 Main gear 30 Cutter shaft 31 Cutter support section 32 Cutter fixing bolts 33 wrench grooves 34 Third longitudinal gear 35 nuts 40 cutters 41 Insert Chips 50 Side panels 51 Skid plate support base 54, 131 Guide projection 60 Skid Plate 61 Tilt plate 62 Pivot bolts 63, 72 Guide slots 64 Tilt control bolts 70 Chip scattering prevention plate 80 Removal amount regulator 82 Adjustable Head 83 Movement axis 90 Bearing Case 91 Nut insertion section 93 Cutter shaft cover 100 Driven axis 101 Bearing Housing 102 First vertical gear 103 Second vertical gear 110 First Idol Axis 111 First Idol Gear 120 Second Idol Axis 121 Second Idol Gear 130 Support stand lifting holder 132 Support base for running rollers 134 Driving rollers 134a Roller surface 135 Lifting control device 136 fixed holes

Claims

1. An actuator (20) attached to the rear end of the gearbox (10), The cutter (40) is installed inside the gearbox (10) at the front so as to be rotatable in a direction perpendicular to the actuator (20), and is integrally coupled to a cutter shaft (30) that rotates by receiving rotational power from the actuator (20) through a combination of numerous gears, and in a vertical state, it rotates in the same direction as the travel direction of the welding bead removal machine R, ensuring straight-line travel capability, and The gearbox (10) is An all-weather welding bead removal machine with straight-line travel capability is characterized in that a first gear operating part (12) connected to a through-hole (11) formed on the rear surface is formed inside on one rear side, and a second gear operating part (13) connected to the first gear operating part (12) and recessed in the other outer surface of the gearbox (10) has a number of bearing insertion grooves (14), (14a) and bearing insertion part (15) formed on its inner surface, and a cutter operating part (16) connected to the bearing insertion part (15) is formed penetrating vertically in front of the first gear operating part (12).

2. An actuator (20) attached to the rear end of the gearbox (10), The cutter (40) is installed inside the gearbox (10) at the front so as to be rotatable in a direction perpendicular to the actuator (20), and is integrally coupled to a cutter shaft (30) that rotates by receiving rotational power from the actuator (20) through a combination of numerous gears, and in a vertical state, it rotates in the same direction as the travel direction of the welding bead removal machine R, ensuring straight-line travel capability, and A pair of side plates (50) are in close contact with both sides of the gearbox (10), and skid plate support bases (51) are integrally attached to the lower front and rear surfaces of each side plate, and skid plates (60) are integrally attached to the lower ends on both sides of each skid plate support base (51). The skid plate (60) is characterized in that tilt plates (61) attached to the front and rear of the upper end are screwed into the skid plate support base (51) by pivot bolts (62) passing through them, and tilt control bolts (64) that pass through guide elongated holes (63) formed in the circumferential direction of the tilt plate (61) are screwed into the skid plate support base (51), thereby enabling straight-line travel for an all-weather welding bead removal machine.

3. An all-weather welding bead removal machine having straight-line movement capability, characterized in that an upper plate (81) is connected to the upper ends of a pair of side plates (50) that are in close contact with both sides of the gearbox (10), the movable shaft (83) of a removal amount adjuster (80) installed at the upper end of the upper plate (81) penetrates the upper plate (81) and is integrally connected to the upper end of the gearbox (10), and a pair of guide protrusions (54) formed to protrude from the front and rear of the inner surfaces of the pair of side plates (50) are fitted into guide grooves (18) formed on both sides of the gearbox (10).

4. The all-weather welding bead removal machine having straight-line travel capability according to claim 1, characterized in that a bearing case (90) is installed in a closed manner in the second gear operating section (13), and a number of bearing insertion grooves (94), (94a), (94b) and bearing insertion section (95) are formed on the inner surface of the bearing case (90).

5. The main gear (22), which is integrally coupled to the power shaft (21) that passes through the through-hole (11) of the gearbox (10) and is drawn into the first gear operating section (12), meshes with the first vertical gear (102) formed on one side of the driven shaft (100), which is rotatably installed on both sides of the first gear operating section (12) and the bearing case (90). The second vertical gear (103), formed on the other side of the driven shaft (100), meshes with the first idler gear (111) formed on the second gear operating section (13) and the first idler shaft (110), which is rotatably installed on both sides of the bearing case (90). The all-weather welding bead removal machine having straight-line movement capability according to claim 1, characterized in that the first idler gear (111) meshes with a second idler gear (121) formed on a second idler shaft (120) which is rotatably installed on both sides of the second gear operating part (13) and the bearing case (90), and the second idler gear (121) meshes with a third vertical moving gear (34) formed on the cutter shaft (30) which is retracted into the cutter operating part (16) and is rotatably installed on both sides of the second gear operating part (13) and the bearing case (90).

6. An all-weather welding bead removal machine having straight-line movement capability, characterized in that a nut insertion portion (91) is formed on one side of the bearing insertion portion (95), and a nut (35) is screwed onto the tip of the cutter shaft (30), which is supported by the bearing (B) inserted into the bearing insertion portions (15) and (95), thereby preventing the cutter shaft (30) from separating.

7. The all-weather welding bead removal machine having straight-line travel capability as described in claim 1, characterized in that a cutter (40) is fitted and coupled to a cutter support portion (31) formed on the outer circumferential surface of the cutter shaft (30) located in the cutter operating portion (16), a cutter fixing bolt (32) coupled to one end of the cutter shaft (30) pressurizes and fixes the side surface of the cutter (40), and when tightening or loosening the cutter fixing bolt (32), a wrench fitted into a wrench groove (33) formed on the other end of the cutter shaft (30) grips the cutter shaft (30) to prevent rotation of the cutter shaft (30).

8. An all-weather welding bead removal machine having straight-line movement capability, as described in claim 2, is characterized in that a support base lifting holder (130) with a guide projection (131) formed to protrude from the center of the rear surface is installed at the rear upper end of a pair of skid plates (60), a guide groove (133) into which the guide projection (131) fits and connects is formed as a recess, and a traveling roller support base (132) on which a traveling roller (134) is rotatably installed at the lower part is closely attached to the rear surface of the support base lifting holder (130) in a manner that allows it to move up and down, and a lifting control device (135) connected through the traveling roller support base (132) is screwed into one of a number of fixing holes (136) formed vertically in the support base lifting holder (130).

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