A precision repair device for metal casting defects

Abstract

The present invention discloses a precision repair device for metal casting defects, which belongs to the technical field of metal casting processing, and includes a repair mechanical arm and a repair fixing component. The repair fixing component is arranged beside the repair mechanical arm, and an arc-shaped rotating component is arranged on the movable end of the repair mechanical arm. A laser automatic welding head and a repair grinding component are respectively arranged on the rotating end of the arc-shaped rotating component. The repair fixing component includes a mounting seat, a casting limiting structure and a fixed switching structure. The casting limiting structure is arranged on the mounting seat and the casting limiting structure and the mounting seat are slidably matched, and the fixed switching structure is arranged on the casting limiting structure. The present invention can change the angular position of the two ends of the grinding belt, so that the angular position of the grinding belt changes, and the angular position of the grinding belt is adjusted to match the angle of the casting, so as to better grind and repair the repair area.

Description

Technical Field

[0001] The invention belongs to the technical field of metal casting processing, and in particular relates to a device for precisely repairing defects of metal castings. Background Art

[0002] With the continuous development of the manufacturing industry, the quality and performance requirements of metal castings are getting higher and higher. However, in the production process of metal castings, various defects will inevitably occur due to various reasons, such as imperfect casting process, mold wear, raw material problems, etc.

[0003] Common metal casting defects include pores, shrinkage cavities, sand holes, cracks, inclusions, etc. These defects not only affect the appearance quality of the casting, but more importantly, they may reduce the mechanical properties, corrosion resistance and service life of the casting, thus affecting the quality and reliability of the entire product.

[0004] Die casting is an efficient production method, and porosity is also an inherent property of die casting. Many die casting companies have a high proportion of porosity in their waste products, even up to 35% or more. Defects on castings need to be repaired after die casting.

[0005] In the existing process of repairing castings, there are many types of castings, such as repairing planes, curved surfaces or holes in grooves, so there will be various repair forms such as plane repair, repair in holes or repair in grooves.

[0006] For example, Chinese patent publication number CN113814235B discloses a precision die-casting surface treatment device with a damage repair function, which relates to the field of die-casting surface treatment technology, including a transfer assembly, a surface treatment assembly, a damage repair assembly, and a lower frame. The transfer assembly, the surface treatment assembly, the damage repair assembly, and the upper surface of the lower frame are fastened together, and the transfer assembly passes through the surface treatment assembly and the damage repair assembly. The transfer assembly of the present invention realizes automated workstation conversion in the processing of die-castings, and avoiding manual participation can reduce the probability of safety accidents during workpiece processing. The present invention realizes the self-circulation of the rotation of the metal ball through the air intake unit, increases the contact area between the metal ball and the external input gas, and switches the state of the metal ball by switching the rotation angle, thereby realizing the directional transportation of impurity particles.

[0007] However, in the existing process of repairing castings, only a single surface can be repaired, for example, only defects on a plane can be repaired. When repairing defects in an arc or a slot, the arc is stored, and the repair structure cannot accurately and quickly repair the arc and perform subsequent polishing work. In the process of repairing defects on castings with different arcs, the repair angle and position cannot be adjusted according to the different arcs and diameters of the castings. Summary of the invention

[0008] The embodiment of the present invention provides a metal casting defect precision repair device to solve the problems in the prior art.

[0009] The embodiment of the present invention adopts the following technical scheme: a precise repair device for metal casting defects, comprising a repair robot arm and a repair fixing component, wherein the repair fixing component is arranged beside the repair robot arm, an arc-shaped rotating component is arranged on the movable end of the repair robot arm, and a laser automatic welding head and a repair grinding component are respectively arranged on the rotating ends of the arc-shaped rotating component, the repair fixing component comprises a mounting seat, a casting limiting structure and a fixed switching structure, the casting limiting structure is arranged on the mounting seat and the casting limiting structure and the mounting seat are slidably matched, and the fixed switching structure is arranged on the casting limiting structure.

[0010] The present invention can change the angular positions of the two ends of the grinding belt, so that the angular position of the grinding belt changes, and the angular position of the grinding belt is adjusted to match the angle of the casting, so as to better grind and repair the repair area.

[0011] Furthermore, the arc-shaped rotating assembly includes an installation box, a rotating motor, a rotating screw and an arc-shaped rotating seat. The installation box is connected to the movable end of the repair robot arm, the rotating screw is rotatably connected to the installation box, the rotating motor is located on the installation box and is transmission-connected to the rotating screw, an arc-shaped groove is provided on the installation box, the arc-shaped rotating seat is slidably connected to the arc-shaped groove on the installation box, an arc-shaped tooth plate is provided at the bottom of the arc-shaped rotating seat, and the arc-shaped tooth plate is transmission-connected to the rotating screw.

[0012] The angle position of the arc-shaped rotating seat can be adjusted according to the different curvatures of the arc-shaped castings, so that in the process of repairing the arc-shaped castings, the repair and grinding components can be better fitted on the arc-shaped castings, so that the repair effect is better.

[0013] Furthermore, the repair and polishing assembly includes a mounting frame, a polishing rotating member and a polishing adjusting member, the mounting frame is connected to an arc-shaped rotating seat, the polishing rotating member is rotatably connected to the mounting frame, the polishing adjusting member is arranged on the mounting frame, and the adjusting end of the polishing adjusting member is connected to the polishing rotating member.

[0014] Furthermore, the grinding rotating part includes a grinding belt, a grinding motor and three grinding rollers. The three grinding rollers are rotatably connected to the mounting frame. The grinding motor is located on the mounting frame and is transmission-connected to one of the grinding rollers. The grinding belt is sleeved on the three grinding rollers, and two slide grooves are provided inside the grinding belt.

[0015] Furthermore, the grinding adjustment part includes an adjusting motor, an adjusting cam and two adjusting plates. The adjusting motor is located on a mounting frame, the adjusting cam is connected to the adjusting motor, the bottoms of the two adjusting plates are rotatably connected to the mounting frame respectively, an adjusting block is provided on the top of the adjusting plate, the adjusting block slides in a slide groove on the grinding belt, a position moving part is provided on the adjusting plate, an adjusting wheel is provided on the position moving part, and the adjusting cam and the adjusting wheel slide in cooperation with each other.

[0016] The angle positions of both ends of the grinding belt can be changed, so that the angle position of the grinding belt changes, and the angle position of the grinding belt is adjusted to match the angle of the casting, so as to better grind and repair the repair area.

[0017] Furthermore, the position moving part includes a mounting frame arranged on the adjustment plate and an adjustment slide plate slidably connected to the mounting frame, the mounting frame is provided with an adjustment screw and an adjustment rod, the adjustment screw is rotatably connected to the mounting frame, the adjustment screw and the adjustment slide plate are threadedly connected, the adjustment slide plate and the adjustment rod are slidably matched, and the adjustment wheel is rotatably connected to the adjustment slide plate.

[0018] Furthermore, a hydraulic rod with a self-locking function is provided on the side wall of each of the adjustment plates, and the telescopic end and the tail end of the hydraulic rod are hinged to the adjustment plate and the mounting frame respectively.

[0019] Furthermore, the casting limiting structure includes a limiting motor, a limiting rotating wheel and four limiting blocks, the limiting rotating wheel is rotatably connected to the mounting seat, the limiting motor is connected to the mounting seat and is transmission-connected to the limiting rotating wheel, the limiting rotating wheel is provided with four arc grooves, the mounting seat is provided with four slide rails, the slide rails are provided with an electric slide slidably connected thereto, the four limiting blocks are respectively connected to the moving ends of the electric slide, and the bottom of the electric slide is provided with a rotating column rotatably cooperating with the arc groove.

[0020] Furthermore, the fixed switching structure is provided with four, and the four fixed switching structures are respectively arranged on four limit blocks, and the fixed switching structure includes a switching motor, a switching gear, a horizontal fixed plate and an arc-shaped fixed plate, the switching motor is located in the limit block, and the main shaft of the switching motor is provided with a switching gear, and the switching gear is provided with two limit tooth plates meshing therewith, and the two limit tooth plates are respectively slidably connected in the limit blocks, and the horizontal fixed plate and the arc-shaped fixed plate are slidably connected in the limit blocks at intervals, and the two limit tooth plates are respectively provided with connecting frames, and the two limit tooth plates are respectively connected to the horizontal fixed plate and the arc-shaped fixed plate through two connecting frames.

[0021] During use of the present invention, different fixing methods can be adjusted according to the types of castings to be repaired, and the plane fixing method and the arc fixing method can be switched, so that when repairing the castings, facing different types of castings, the casting fixing effect is better.

[0022] Furthermore, an upper limit electric cylinder and a lower limit electric cylinder are respectively provided in the limit block, and locking holes are provided on the horizontal fixing plate and the arc-shaped fixing plate.

[0023] At least one of the above technical solutions adopted in the embodiments of the present invention can achieve the following beneficial effects:

[0024] Firstly, when repairing and grinding castings with different curvatures, the present invention can drive the adjustment cam to rotate by the adjustment motor so that the position of the adjustment cam drives the positions of the two adjustment wheels to rotate, thereby changing the angles of the two adjustment plates on the mounting frame, so that the positions of the adjustment blocks on the top of the two adjustment plates move, thereby changing the angles of the two ends of the grinding belt, changing the angle of the grinding belt, adjusting the angle of the grinding belt to match the angle of the casting, and better grinding and repairing the repair area;

[0025] When adjusting the angular position of the grinding belt during the repair process, the adjusting screw is rotated on the mounting frame, thereby driving the position of the adjusting slide plate to move on the adjusting rod, so as to change the position distance of the adjusting wheel on the mounting frame. When adjusting the angular position of the two adjusting plates, when the spacing between the two adjusting wheels is small, the angular position rotation of the two adjusting plates will change slightly. When the spacing between the two adjusting wheels becomes larger, the angular position rotation of the two adjusting plates will change significantly. Therefore, when the angles of the two ends of the grinding belt are changed, more angle changes are obtained, so as to be suitable for the repair of castings of more sizes and arcs.

[0026] Secondly, during the use of the present invention, different fixing methods can be adjusted according to the different types of castings to be repaired, and the plane fixing method and the arc fixing method can be switched, so that when repairing the castings, facing different types of castings, the effect of fixing the castings is better.

[0027] Thirdly, in the process of fixing the casting of the present invention, the operation of the electric slide can drive the position of the limit block to move along the length direction of the electric slide. When limiting castings of different sizes, since the adjustment position of the arc groove on the limit rotating wheel is limited, after the casting is adjusted by the operation of the limit rotating wheel, the electric slide can also be used to adjust and regulate according to the size of the casting, so as to limit and fix castings of larger sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0029] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0030] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0031] Figure 3 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 1 ;

[0032] Figure 4 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 2 ;

[0033] Figure 5 It is a schematic diagram of the three-dimensional structure of the arc-shaped rotating component in the present invention;

[0034] Figure 6 It is a schematic diagram of the three-dimensional structure of the repair and polishing component of the present invention;

[0035] Figure 7 A schematic diagram of a partial three-dimensional structure of the repair and polishing component of the present invention

[0036] Figure 8 for Figure 7 The enlarged view of point A in the middle;

[0037] Fig. 9 It is a schematic diagram of the three-dimensional structure of the grinding belt in the present invention;

[0038] Fig.10 It is a three-dimensional structural schematic diagram of the casting limiting structure in the present invention;

[0039] Fig.11 It is a schematic diagram of the three-dimensional structure of the repair and fixing assembly in the present invention;

[0040] Fig.12 It is a schematic diagram of the three-dimensional structure of the fixed switching structure in the present invention;

[0041] Reference numerals

[0042] Repair robot arm 1, repair fixed assembly 2, mounting seat 21, casting limit structure 22, limit motor 221, limit rotating wheel 222, limit block 223, arc groove 224, slide rail 225, electric slide 226, rotating column 227, fixed switching structure 23, switching motor 231, switching gear 232, horizontal fixing plate 233, arc fixing plate 234, limit tooth plate 235, connecting frame 236, upper limit electric cylinder 24, lower limit electric cylinder 25, locking hole 26, arc rotating assembly 3, mounting box 31, rotating motor 32, rotating screw 33, arc-shaped rotating seat 34, arc-shaped groove 35, arc-shaped tooth plate 36, laser automatic welding head 4, repair and grinding assembly 5, mounting frame 50, grinding rotating part 51, grinding belt 511, grinding motor 512, grinding roller 513, slide 514, grinding adjustment part 52, adjusting motor 521, adjusting cam 522, adjusting plate 523, adjusting block 524, adjusting wheel 525, position moving part 53, mounting frame 531, adjusting slide plate 532, adjusting screw 533, adjusting rod 534, hydraulic rod 54. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0044] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0045] Reference Figures 1 to 12 As shown, an embodiment of the present invention provides a precision repair device for metal casting defects, including a repair robot arm 1 and a repair fixing component 2, wherein the repair fixing component 2 is arranged beside the repair robot arm 1, and an arc-shaped rotating component 3 is arranged on the movable end of the repair robot arm 1, and a laser automatic welding head 4 and a repair grinding component 5 are respectively arranged on the rotating ends of the arc-shaped rotating component 3, and the repair fixing component 2 includes a mounting seat 21, a casting limiting structure 22 and a fixed switching structure 23, the casting limiting structure 22 is arranged on the mounting seat 21 and the casting limiting structure 22 and the mounting seat 21 are slidably matched, and the fixed switching structure 23 is arranged on the casting limiting structure 22.

[0046] The holes on the casting are welded and repaired by the laser automatic welding head 4 to form a repair area. After welding, the repair and grinding component 5 will grind the repair area of ​​the welded holes to achieve a better repair effect.

[0047] In the process of repairing castings, the repair work is divided into the following two situations:

[0048] The first type: when the casting is flat and needs to be repaired, the repair robot arm 1 works to make the arc rotating component 3 in a horizontal position, so that the laser automatic welding head 4 and the repair grinding component 5 are in a horizontal position to repair the horizontal surface of the casting;

[0049] The second type: when gradually repairing the curved surface: at this time, the repair robot arm 1 works to make the curved rotating component 3 in a vertical position, and the laser automatic welding head 4 and the repair and grinding component 5 are moved to the side of the curved surface to repair the curved casting.

[0050] Specifically, the arc-shaped rotating assembly 3 includes an installation box 31, a rotating motor 32, a rotating screw 33 and an arc-shaped rotating seat 34. The installation box 31 is connected to the mobile end of the repair robot arm 1, and the rotating screw 33 is rotatably connected to the installation box 31. The rotating motor 32 is located on the installation box 31 and is transmission-connected to the rotating screw 33. An arc-shaped groove 35 is provided on the installation box 31, and the arc-shaped rotating seat 34 is slidably connected to the arc-shaped groove 35 on the installation box 31. An arc-shaped tooth plate 36 is provided at the bottom of the arc-shaped rotating seat 34, and the arc-shaped tooth plate 36 is transmission-connected to the rotating screw 33.

[0051] In this embodiment, the rotating motor 32 drives the rotating screw 33 to rotate in the installation box 31, thereby driving the arc-shaped toothed plate 36 that is in transmission connection with the rotating screw 33 to rotate, and then driving the arc-shaped rotating seat 34 to rotate in an arc shape on the arc-shaped groove 35 on the installation box 31;

[0052] When repairing a horizontal casting, the rotating motor 32 works so that the arc-shaped rotating seat 34 and the mounting box 31 are in a parallel state, so that the arc-shaped rotating seat 34 is in a horizontal position, and in the process of grinding a flat casting, the repair and grinding assembly 5 is driven to work to repair the flat casting;

[0053] When repairing an arc-shaped casting, the rotating motor 32 will drive the arc-shaped rotating seat 34 to rotate in the arc-shaped groove 35 on the mounting box 31. The angular position of the arc-shaped rotating seat 34 can be adjusted according to the curvature of the arc-shaped casting, so that in the process of repairing the arc-shaped casting, the repair and grinding assembly 5 can fit better on the arc-shaped casting, so that the repair effect is better.

[0054] Specifically, the repair and polishing assembly 5 includes a mounting frame 50, a polishing rotating member 51 and a polishing adjusting member 52. The mounting frame 50 is connected to the arc-shaped rotating seat 34, the polishing rotating member 51 is rotatably connected to the mounting frame 50, and the polishing adjusting member 52 is arranged on the mounting frame 50, and the adjusting end of the polishing adjusting member 52 is connected to the polishing rotating member 51.

[0055] Specifically, the grinding rotating part 51 includes a grinding belt 511, a grinding motor 512 and three grinding rollers 513. The three grinding rollers 513 are rotatably connected to the mounting frame 50. The grinding motor 512 is located on the mounting frame 50 and is transmission-connected to one of the grinding rollers 513. The grinding belt 511 is sleeved on the three grinding rollers 513. Two slide grooves 514 are provided inside the grinding belt 511.

[0056] In this embodiment, when the casting is polished after welding, the polishing motor 512 drives the three polishing rollers 513 to rotate on the mounting frame 50. The rotation of the three polishing rollers 513 drives the polishing belt 511 to rotate to polish the repair area on the casting, and the excess welding residue and polishing work are performed on the holes in the repair area to ensure the smoothness of the subsequent casting repair and ensure the quality of the repair.

[0057] Specifically, the grinding adjustment member 52 includes an adjustment motor 521, an adjustment cam 522 and two adjustment plates 523. The adjustment motor 521 is located on the mounting frame 50. The adjustment cam 522 is connected to the adjustment motor 521. The bottoms of the two adjustment plates 523 are rotatably connected to the mounting frame 50 respectively. The top of the adjustment plate 523 is provided with an adjustment block 524. The adjustment block 524 slides in the slide groove 514 on the grinding belt 511. The adjustment plate 523 is provided with a position moving member 53. The position moving member 53 is provided with an adjustment wheel 525. The adjustment cam 522 and the adjustment wheel 525 are slidably matched with each other.

[0058] The position moving member 53 includes a mounting frame 531 disposed on the adjusting plate 523 and an adjusting slide plate 532 slidably connected to the mounting frame 531. The mounting frame 531 is provided with an adjusting screw 533 and an adjusting rod 534. The adjusting screw 533 is rotatably connected to the mounting frame 531. The adjusting screw 533 is threadedly connected to the adjusting slide plate 532. The adjusting slide plate 532 is slidably matched with the adjusting rod 534. The adjusting wheel 525 is rotatably connected to the adjusting slide plate 532.

[0059] A hydraulic rod 54 with a self-locking function is provided on the side wall of each of the adjustment plates 523 , and the telescopic end and the tail end of the hydraulic rod 54 are hinged to the adjustment plate 523 and the mounting frame 50 respectively.

[0060] In this embodiment, when repairing and grinding castings with different curvatures, the adjusting motor 521 drives the adjusting cam 522 to rotate, so that the position of the adjusting cam 522 drives the positions of the two adjusting wheels 525 to rotate, so that the angle positions of the two adjusting plates 523 on the mounting frame 50 change, so that the positions of the adjusting blocks 524 on the tops of the two adjusting plates 523 move, thereby changing the angle positions of the two ends of the grinding belt 511, so that the angle position of the grinding belt 511 changes, and the angle position of the grinding belt 511 is adjusted to match the angle of the casting, so as to better grind and repair the repair area;

[0061] When the angle position of the grinding belt 511 is adjusted during the repair process, the adjusting screw 533 is rotated on the mounting frame 531, thereby driving the position of the adjusting slide plate 532 to move on the adjusting rod 534, so as to change the position distance of the adjusting wheel 525 on the mounting frame 531. When the angle position of the two adjusting plates 523 is adjusted, when the distance between the two adjusting wheels 525 is small, the angle position rotation of the two adjusting plates 523 will change slightly. When the distance between the two adjusting wheels 525 becomes larger, the angle position rotation of the two adjusting plates 523 will change significantly. Therefore, when the angles of the two ends of the grinding belt 511 are changed, more angle changes are obtained, so as to be applicable to the repair work of castings of more sizes and arcs.

[0062] After the position angles of the two adjustment plates 523 are determined, the angles of the adjustment plates 523 and the mounting frame 50 can be locked by a hydraulic rod 54 with a self-locking function to prevent the position of the adjustment plates 523 from changing and shifting during the grinding of the casting, thereby affecting the grinding of the casting.

[0063] It should be noted that the self-locking hydraulic rod 54 adopts a hydraulic lock: self-locking is achieved by controlling the on and off of the hydraulic oil circuit. When locking is required, the corresponding oil circuit is closed so that the hydraulic oil cannot flow, thereby achieving the locking effect; when unlocked, the hydraulic rod 54 can rotate between the adjustment plate 523 and the mounting frame 50, and the telescopic end of the hydraulic rod 54 can be telescoped.

[0064] Specifically, the casting limiting structure 22 includes a limiting motor 221, a limiting rotating wheel 222 and four limiting blocks 223. The limiting rotating wheel 222 is rotatably connected to the mounting seat 21. The limiting motor 221 is connected to the mounting seat 21 and is transmission-connected to the limiting rotating wheel 222. The limiting rotating wheel 222 is provided with four arc grooves 224. The mounting seat 21 is provided with four slide rails 225. The slide rails 225 are provided with an electric slide 226 slidably connected thereto. The four limiting blocks 223 are respectively connected to the moving ends of the electric slide 226. The bottom of the electric slide 226 is provided with a rotating column 227 rotatably matched with the arc groove 224.

[0065] In this embodiment, when the position of the casting is limited and fixed, the limit motor 221 drives the limit rotating wheel 222 to rotate on the mounting seat 21, and the four arc grooves 224 on the limit rotating wheel 222 rotate to make the rotating column 227 at the bottom of the electric slide 226 rotate in the arc groove 35, so that the position of the electric slide 226 moves to the position of the slide rail 225, and the position of the limit block 223 on the electric slide 226 is moved to the side of the casting. The casting can be limited and fixed by the fixed switching structure 23, and different fixing methods are selected according to different planes of the casting to fix the casting, so as to achieve a better effect of fixing the casting;

[0066] In the process of fixing the casting, the electric slide 226 can drive the position of the limit block 223 to move along the length direction of the electric slide 226. When limiting castings of different sizes, since the adjustment position of the arc groove 224 on the limit rotating wheel 222 is limited, after the casting is adjusted by the limit rotating wheel 222, the electric slide 226 can also be used to adjust and adjust according to the size of the casting, so as to limit and fix castings of larger sizes.

[0067] Specifically, there are four fixed switching structures 23, and the four fixed switching structures 23 are respectively arranged on four limit blocks 223. The fixed switching structure 23 includes a switching motor 231, a switching gear 232, a horizontal fixed plate 233 and an arc-shaped fixed plate 234. The switching motor 231 is located in the limit block 223. A switching gear 232 is provided on the main shaft of the switching motor 231. The switching gear 232 is provided with two limit tooth plates 235 meshing therewith. The two limit tooth plates 235 are respectively slidably connected in the limit block 223. The horizontal fixed plate 233 and the arc-shaped fixed plate 234 are slidably connected in the limit block 223 at intervals. A connecting frame 236 is respectively provided on the two limit tooth plates 235. The two limit tooth plates 235 are respectively connected to the horizontal fixed plate 233 and the arc-shaped fixed plate 234 through two connecting frames 236.

[0068] Four fixed switching structures 23 are provided, and in the process of limiting the position of the casting, the four surfaces of the casting can be limited and fixed from all sides, so that in the process of fixing the casting, the effect of fixing the casting is better.

[0069] In this embodiment, during use, the switching motor 231 drives the switching gear 232 to work, which drives the positions of the two limit tooth plates 235 to move;

[0070] When the plane casting is limited and fixed, the switching gear 232 rotates to drive the limit tooth plate 235 to work through the connecting frame 236 to drive the position of the horizontal fixing plate 233 to move out of the limit block 223, and the plane casting is limited and fixed by the movement of the horizontal fixing plate 233, so as to prevent the plane casting from shaking during the process of limiting the plane casting and affecting the repair of the casting;

[0071] When the arc-shaped casting is limited and fixed, the switching gear 232 rotates to drive another limit tooth plate 235 to work through another connecting frame 236 to drive the position of the arc-shaped fixing plate 234 to move out of the limit block 223, and the arc-shaped casting is limited and fixed by the movement of the arc-shaped fixing plate 234, so as to prevent the arc-shaped casting from shaking during the process of limiting the arc-shaped casting and affecting the repair of the casting;

[0072] During use, different fixing methods can be adjusted according to the types of castings to be repaired, and switching can be performed between plane fixing methods and arc fixing methods, so that when repairing castings, facing different types of castings, the casting fixing effect can be better.

[0073] Specifically, an upper limit electric cylinder 24 and a lower limit electric cylinder 25 are respectively provided in the limit block 223, and locking holes 26 are provided on the horizontal fixing plate 233 and the arc fixing plate 234;

[0074] In the process of fixing the arc-shaped or flat casting, after the casting is limited and fixed by the horizontal fixing plate 233 and the arc-shaped fixing plate 234, the upper limit electric cylinder 24 or the lower limit electric cylinder 25 will work and be plugged into the corresponding locking hole 26, which will limit and fix the position of the horizontal fixing plate 233 or the arc-shaped fixing plate 234, preventing the horizontal fixing plate 233 or the arc-shaped fixing plate 234 from shifting in position during the process of limiting and fixing the casting, thereby affecting the fixation of the casting.

[0075] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A metal casting defect precision repair device, characterized in that: It comprises a repairing mechanical arm (1) and a repairing fixing component (2), wherein the repairing fixing component (2) is arranged beside the repairing mechanical arm (1); An arc-shaped rotating assembly (3) is provided on the moving end of the repair robot arm (1), and a laser automatic welding head (4) and a repair grinding assembly (5) are respectively provided on the rotating ends of the arc-shaped rotating assembly (3); The repair and fixing assembly (2) comprises a mounting seat (21), a casting limiting structure (22) and a fixing switching structure (23); The casting limiting structure (22) is arranged on the mounting seat (21) and the casting limiting structure (22) and the mounting seat (21) are slidably matched, and the fixed switching structure (23) is arranged on the casting limiting structure (22); The arc-shaped rotating assembly (3) comprises a mounting box (31), a rotating motor (32), a rotating screw (33) and an arc-shaped rotating seat (34); The installation box (31) is connected to the moving end of the repair robot arm (1), the rotating screw (33) is rotationally connected to the installation box (31), and the rotating motor (32) is located on the installation box (31) and is transmission-connected to the rotating screw (33); The installation box (31) is provided with an arc-shaped groove (35), and the arc-shaped rotating seat (34) is slidably connected to the arc-shaped groove (35) on the installation box (31); An arc-shaped toothed plate (36) is provided at the bottom of the arc-shaped rotating seat (34), and the arc-shaped toothed plate (36) is transmission-connected to the rotating screw (33); The repair and polishing assembly (5) comprises a mounting frame (50), a polishing rotating member (51) and a polishing adjusting member (52); The mounting frame (50) is connected to the arc-shaped rotating seat (34), the grinding rotating member (51) is rotatably connected to the mounting frame (50), the grinding adjusting member (52) is arranged on the mounting frame (50), and the adjusting end of the grinding adjusting member (52) is connected to the grinding rotating member (51); The grinding rotating member (51) comprises a grinding belt (511), a grinding motor (512) and three grinding rollers (513); The three grinding rollers (513) are rotatably connected to the mounting frame (50), and the grinding motor (512) is located on the mounting frame (50) and is drivingly connected to one of the grinding rollers (513); The grinding belt (511) is sleeved on three grinding rollers (513), and two slide grooves (514) are arranged inside the grinding belt (511); The grinding adjustment member (52) comprises an adjustment motor (521), an adjustment cam (522) and two adjustment plates (523); The adjusting motor (521) is located on the mounting frame (50), the adjusting cam (522) is connected to the adjusting motor (521), and the bottoms of the two adjusting plates (523) are rotatably connected to the mounting frame (50) respectively; An adjusting block (524) is provided on the top of the adjusting plate (523), and the adjusting block (524) slides in a slide groove (514) on the grinding belt (511); The adjusting plate (523) is provided with a position moving member (53), the position moving member (53) is provided with an adjusting wheel (525), and the adjusting cam (522) and the adjusting wheel (525) are slidably matched with each other.

2. A metal casting defect precision repair device according to claim 1, characterized in that: The position moving member (53) comprises a mounting frame (531) arranged on the adjusting plate (523) and an adjusting slide plate (532) slidably connected to the mounting frame (531); The mounting frame (531) is provided with an adjusting screw (533) and an adjusting rod (534); the adjusting screw (533) is rotatably connected to the mounting frame (531); the adjusting screw (533) is threadedly connected to the adjusting slide plate (532); and the adjusting slide plate (532) is slidably matched to the adjusting rod (534); The adjusting wheel (525) is rotatably connected to the adjusting slide plate (532).

3. A metal casting defect precision repair device according to claim 2, characterized in that: A hydraulic rod (54) with a self-locking function is provided on the side wall of each adjustment plate (523), and the telescopic end and the tail end of the hydraulic rod (54) are respectively hinged to the adjustment plate (523) and the mounting frame (50).

4. A metal casting defect precision repair device according to claim 1, characterized in that: The casting limiting structure (22) comprises a limiting motor (221), a limiting rotating wheel (222) and four limiting blocks (223); The position-limiting rotating wheel (222) is rotatably connected to the mounting seat (21), and the position-limiting motor (221) is connected to the mounting seat (21) and is transmission-connected to the position-limiting rotating wheel (222); The limiting rotating wheel (222) is provided with four arc grooves (224), the mounting seat (21) is provided with four slide rails (225), the slide rails (225) are provided with an electric slide table (226) slidably connected thereto, and the four limiting blocks (223) are respectively connected to the moving ends of the electric slide table (226); The bottom of the electric slide (226) is provided with a rotating column (227) that is rotatably matched with the arc groove (224).

5. A metal casting defect precision repair device according to claim 4, characterized in that: There are four fixed switching structures (23), and the four fixed switching structures (23) are respectively arranged on four limit blocks (223); The fixed switching structure (23) comprises a switching motor (231), a switching gear (232), a horizontal fixing plate (233) and an arc-shaped fixing plate (234); The switching motor (231) is located in the limit block (223); a switching gear (232) is provided on the main shaft of the switching motor (231); the switching gear (232) is provided with two limit tooth plates (235) meshing therewith; the two limit tooth plates (235) are respectively slidably connected in the limit block (223); The horizontal fixing plate (233) and the arc-shaped fixing plate (234) are slidably connected in the limiting block (223) at intervals, and the two limiting toothed plates (235) are respectively provided with connecting frames (236), and the two limiting toothed plates (235) are respectively connected to the horizontal fixing plate (233) and the arc-shaped fixing plate (234) through the two connecting frames (236).

6. A metal casting defect precision repair device according to claim 5, characterized in that: An upper limit electric cylinder (24) and a lower limit electric cylinder (25) are respectively arranged in the limit block (223), and locking holes (26) are arranged on the horizontal fixing plate (233) and the arc-shaped fixing plate (234).

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