A device for polishing the surface of a ship hull casting

Abstract

The utility model discloses a ship body foundry goods surface polishing device relates to foundry production technical field, and the top one side of fixed seat is equipped with fixed subassembly, and fixed subassembly includes the fixed disc of fixed connection with the top of fixed seat, and the inner wall rotationally connected of fixed disc has first carousel, and the left and right sides inner wall of first carousel all are equipped with first guide sliding slot, and the inner wall of each first guide sliding slot all slidingly connects with first pressing tool, in the utility model, in fixed subassembly, the first carousel synchronous rotation of two -way screw rod drive moving block drive second carousel, and the radial sliding of pressing tool is converted to the circular motion with the cooperation of guide sliding slot, realizes the cross -shaped synchronous linkage clamping of four groups of supporting plate, and the centering mode of traditional dependence on manual experience is thoroughly got rid of, can automatic alignment foundry goods geometric center and polishing main shaft center, effectively avoids local overgrinding or undergrinding problem.

Description

Technical Field

[0001] This utility model relates to the field of casting production technology, specifically to a surface grinding device for ship hull castings. Background Technology

[0002] In the field of ship casting production and processing, after the castings are cooled and formed, they need to be ground to remove surface flash, burrs and casting defects in order to meet the precision requirements of subsequent assembly and painting. Stable clamping of the castings during the grinding process is the core prerequisite for ensuring grinding quality and efficiency.

[0003] In existing technologies, traditional segmented pressure plate fixing relies on the operator's experience to judge the center position, making it difficult to achieve precise alignment between the geometric center of the casting and the center of the grinding spindle. This can lead to local over-grinding or under-grinding during the grinding process, or because it is impossible to ensure the synchronous operation of multiple jaws, the casting is prone to deformation due to uneven clamping force, or the rigid collision between the fixture and the casting can be caused by unstable fixing, resulting in equipment damage or casting scrap.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] The purpose of this invention is to provide a surface grinding device for ship hull castings to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a surface grinding device for ship hull castings, including a fixed base, a fixed component installed on one side of the top of the fixed base, the fixed component including a fixed disk fixedly connected to the top of the fixed base, a first turntable rotatably connected to the inner wall of the fixed disk, a first guide groove opened on the inner walls of both the left and right sides of the first turntable, a first pressure tool slidably connected to the inner wall of each first guide groove, a first support plate fixedly connected to the adjacent end of each of the two first pressure tools, a second turntable rotatably connected to the inner wall of the fixed disk away from the first turntable, a second guide groove opened on the inner walls of both the upper and lower sides of the second turntable, a second pressure tool slidably connected to the inner wall of each second guide groove, a second support plate fixedly connected to the adjacent end of each of the two second pressure tools, a moving block rotatably connected to the adjacent side of the first turntable and the second turntable, and a bidirectional lead screw threadedly connected to the inner wall of the two moving blocks.

[0007] Furthermore, a first motor is connected to one side of the outer wall of the fixed base, a lead screw is connected to the output end of the first motor, a movable housing is threaded to the outer wall of the lead screw, and a grinding assembly is installed inside the movable housing.

[0008] Furthermore, the grinding assembly includes a second motor mounted on the inner wall of the movable housing. The output end of the second motor is connected to a first bevel gear. A second bevel gear is meshed with one side of the bottom end of the first bevel gear. A connecting rod is fixedly connected to the middle of the second bevel gear. A third bevel gear is fixedly connected to the bottom end of the connecting rod. A fourth bevel gear is meshed with one side of the outer wall of the third bevel gear. A grinding head is fixedly connected to the middle of the fourth bevel gear. A mounting housing is fitted onto the outer wall of the connecting rod. A worm gear is fixedly connected to the top end of the mounting housing. A worm is meshed with one side of the outer wall of the worm gear. One end of the worm is connected to the third motor.

[0009] Furthermore, a nozzle is installed on one outer wall of the fixed base, and a pipe is connected to the end of the nozzle away from the fixed base. An electric push rod is installed at the bottom of the nozzle.

[0010] Furthermore, each of the second and first guard plates is made of wear-resistant material, and each of the second and first guard plates has anti-slip textures on its surface.

[0011] Furthermore, the outer wall of the second motor is fixedly connected to the inner wall of the movable housing, the outer wall of the third motor is fixedly connected to the inner wall of the movable housing, the bottom end of the movable housing is slidably connected to the top end of the fixed base, and the end of the lead screw away from the first motor is rotatably connected to the inner wall of the fixed base.

[0012] Furthermore, each first presser is slidably connected to the inner wall of the fixed plate, and each second presser is slidably connected to the inner wall of the fixed plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. In the fixed assembly, the bidirectional screw drives the moving block to drive the first and second turntables to rotate synchronously. In conjunction with the guide slide, the circular motion is converted into the radial sliding of the press, realizing the cross-shaped synchronous linkage clamping of the four sets of support plates. This completely eliminates the traditional centering method that relies on manual experience. It can automatically align the geometric center of the casting with the center of the grinding spindle, effectively avoiding local over-grinding or under-grinding problems.

[0014] 2. The four-way synchronous force application ensures even distribution of clamping force. Combined with wear-resistant and anti-slip textured support plates, it significantly reduces the risk of deformation of castings caused by uneven force. In addition, the anti-slip design and stable clamping structure together resist grinding vibration, avoid rigid collision between the clamp and the casting, and reduce equipment damage and casting scrap.

[0015] 3. The first motor drives the moving outer shell to slide, and the third motor adjusts the angle of the grinding head through the worm gear, which can be adapted to ship castings of different specifications and irregular shapes. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of a surface grinding device for ship hull castings; Figure 2 This is a schematic diagram of a fixing component in a surface grinding device for ship hull castings. Figure 3 A schematic diagram of the back structure of a fixing component in a surface grinding device for ship castings; Figure 4 This is a schematic diagram of the grinding component in a surface grinding device for ship hull castings. Figure 5 This is a structurally disassembled schematic diagram of a grinding component in a surface grinding device for ship castings.

[0017] In the diagram: 1. Fixed base; 2. Fixed plate; 3. First turntable; 4. First guide groove; 5. First pressure fixture; 6. First support plate; 7. Second turntable; 8. Second guide groove; 9. Second pressure fixture; 10. Second support plate; 11. Moving block; 12. Two-way lead screw; 13. First motor; 14. Moving housing; 15. Second motor; 16. First bevel gear; 17. Second bevel gear; 18. Connecting rod; 19. Third bevel gear; 20. Fourth bevel gear; 21. Grinding head; 22. Third motor; 23. Worm gear; 24. Worm wheel; 25. Mounting housing; 26. Nozzle. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-5This utility model provides a technical solution: a surface grinding device for ship hull castings, including a fixed base 1. A fixing component is installed on one side of the top of the fixed base 1. The fixing component includes a fixed disk 2 fixedly connected to the top of the fixed base 1. A first turntable 3 is rotatably connected to the inner wall of the fixed disk 2. First guide grooves 4 are opened on the inner walls of the left and right sides of the first turntable 3. A first pressure piece 5 is slidably connected to the inner wall of each first guide groove 4. The first guide groove 4 forms a guiding constraint on the first pressure piece 5 on the inner wall of the first turntable 3, providing a trajectory channel for the radial sliding of the first pressure piece 5, controlling the movement direction of the first pressure piece 5, and avoiding clamping misalignment. The first guide groove 4 converts the circumferential motion of the first turntable 3 into the horizontal radial sliding of the first pressure piece 5, realizing the adjustment of the clamping range. A first support plate 6 is fixedly connected to one end of each of the two first pressure pieces 5. The first support plate 6 transmits the driving force of the first pressure piece 5 to the surface of the casting. By increasing the contact area through the plate body, the clamping force is dispersed, avoiding excessive local force that could damage the casting. The casting deforms, and a second turntable 7 is rotatably connected to the inner wall of the fixed disk 2 on the side away from the first turntable 3. Second guide grooves 8 are provided on the upper and lower inner walls of the second turntable 7. A second pressure tool 9 is slidably connected to the inner wall of each second guide groove 8. The second pressure tool 9, the second support plate 10, and the first support plate 6 cooperate to form a four-sided clamping structure, evenly transmitting the driving force of the second pressure tool 9 to the upper and lower surfaces of the casting. The second guide grooves 8 and the second pressure tool 9 convert the circular motion of the second turntable 7 into the motion of the second pressure tool 9. The vertical diameter slides and forms a cross-shaped clamping linkage with the first pressure fixture 5. The two second pressure fixtures 9 are each fixedly connected to a second support plate 10 at their adjacent ends. The first turntable 3 and the second turntable 7 are each rotatably connected to a moving block 11 on their adjacent sides. The inner walls of the two moving blocks 11 are threaded with a bidirectional screw rod 12. The connection between the first turntable 3, the second turntable 7 and the moving blocks 11 forms a power transmission bridge of the bidirectional screw rod 12, allowing the moving blocks 11 to rotate relative to the first turntable 3 and the second turntable 7, thus avoiding motion interference.

[0020] See Figure 1 A first motor 13 is connected to one outer wall of the fixed base 1. A lead screw is connected to the output end of the first motor 13. A movable housing 14 is threaded to the outer wall of the lead screw. A grinding component is installed inside the movable housing 14. The first motor 13 provides a precise power source for the position adjustment of the movable housing 14. Compared with manual pushing or traditional hydraulic drive, the first motor 13 can achieve digital control of the moving distance by controlling the speed and number of rotations, avoiding errors in manual operation. At the same time, the first motor 13 can quickly adjust the position of the movable housing 14 according to the grinding requirements, improving work efficiency.

[0021] See Figure 4 , Figure 5The grinding assembly includes a second motor 15 mounted on the inner wall of the movable housing 14. The output end of the second motor 15 is connected to a first bevel gear 16. The second motor 15 is fixed to the upper part of the inner wall of the movable housing 14, serving as a rotational power source. A second bevel gear 17 is meshed with one side of the bottom end of the first bevel gear 16. Rotation of the first bevel gear 16 drives the second bevel gear 17 to rotate synchronously. A connecting rod 18 is fixedly connected to the middle of the second bevel gear 17, and a third bevel gear 19 is fixedly connected to the bottom end of the connecting rod 18. Rotation of the second bevel gear 17 causes the connecting rod 18 to rotate synchronously, thereby driving the third bevel gear 19 to engage. The third bevel gear 19 is rotated, and a fourth bevel gear 20 is meshed with one side of its outer wall. A grinding head 21 is fixedly connected to the middle of the fourth bevel gear 20. The fourth bevel gear 20 is horizontally set and directly connected to the grinding head 21. The rotation of the fourth bevel gear 20 drives the grinding head 21 to rotate. A mounting shell 25 is sleeved on the outer wall of the connecting rod 18. A worm gear 24 is fixedly connected to the top of the mounting shell 25. A worm 23 is meshed with one side of the outer wall of the worm gear 24. One end of the worm 23 is connected to a third motor 22. After the third motor 22 rotates, it drives the worm 23 to rotate, thereby driving the worm gear 24 to rotate, so as to realize the angle adjustment of the mounting shell 25.

[0022] See Figure 1 A nozzle 26 is installed on one outer wall of the fixed base 1. The end of the nozzle 26 away from the fixed base 1 is connected to a pipe. An electric push rod is installed at the bottom of the nozzle 26. The nozzle 26 is a direct actuator that can spray the coolant or cleaning fluid transported by the pipe to the grinding point. The coolant can quickly remove the heat generated by grinding, preventing the casting from deforming due to high temperature or affecting the performance of the surface annealing. On the other hand, the cleaning fluid can wash away metal dust, preventing dust accumulation from affecting the rotation accuracy of the grinding head 21 and the surface roughness of the casting.

[0023] See Figure 2 , Figure 3 Each first clamping fixture 5 is slidably connected to the inner wall of the fixed plate 2, and each second clamping fixture 9 is slidably connected to the inner wall of the fixed plate 2. Each second support plate 10 and first support plate 6 is made of wear-resistant material, and each second support plate 10 and first support plate 6 has anti-slip textures on its surface. The second support plates 10 and first support plates 6 work together to form a stable clamping grip on the casting from both above and below. The wear-resistant properties ensure that it is not easily damaged when used with castings of different hardness, while the anti-slip textures further enhance the overall reliability of the four-way clamping, making it suitable for irregularly shaped or unevenly surfaced ship hull castings.

[0024] See Figure 4 , Figure 5The outer wall of the second motor 15 is fixedly connected to the inner wall of the movable housing 14, and the outer wall of the third motor 22 is fixedly connected to the inner wall of the movable housing 14. The fixed connection allows the vibration generated by the second motor 15 and the third motor 22 during operation to be dispersed and absorbed by the movable housing 14, preventing the vibration from being transmitted to other components and preventing irregular grinding patterns or damage to the surface of the casting caused by vibration. At the same time, it avoids the transmission ratio deviation caused by the displacement of the second motor 15 and the third motor 22, so that the angle adjustment of the grinding head 21 can accurately respond to the control command and meet the grinding needs of different curved surfaces of irregularly shaped castings.

[0025] Working principle: The rotation of the bidirectional lead screw 12 drives the two moving blocks 11 to move synchronously. The moving blocks 11 drive the first turntable 3 and the second turntable 7 to rotate within the fixed plate 2. The first guide groove 4 of the first turntable 3 converts the circular motion into the horizontal sliding of the first pressure tool 5, and the second guide groove 8 of the second turntable 7 converts the circular motion into the vertical sliding of the second pressure tool 9. The two form a cross linkage, which drives the first support plate 6 and the second support plate 10 to firmly clamp the casting from four sides.

[0026] Subsequently, the grinding assembly starts operation. The first motor 13 drives the lead screw to rotate, causing the movable housing 14 to slide along the fixed base 1 to adjust the grinding position. The second motor 15 drives the first bevel gear 16 to rotate, meshing and driving the second bevel gear 17, connecting rod 18 and third bevel gear 19 to rotate, which in turn drives the grinding head 21 to rotate through the fourth bevel gear 20. The third motor 22 drives the worm gear 23 to rotate, meshing with the worm wheel 24 to drive the mounting housing 25 and grinding head 21 to adjust the angle. During the grinding process, the nozzle 26 sprays coolant or cleaning fluid in a directional manner under the drive of the electric push rod to achieve cooling and dust removal, ensuring grinding accuracy.

[0027] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. Furthermore, since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A surface grinding device for ship hull castings, comprising a fixed base (1), characterized in that: A fixing component is installed on one side of the top of the fixing base (1). The fixing component includes a fixing plate (2) fixedly connected to the top of the fixing base (1). A first turntable (3) is rotatably connected to the inner wall of the fixing plate (2). A first guide groove (4) is provided on the inner walls of both the left and right sides of the first turntable (3). A first pressure piece (5) is slidably connected to the inner wall of each first guide groove (4). A first support plate (6) is fixedly connected to one end of each of the two first pressure pieces (5). The fixing plate (2) is away from the first turntable. (3) is rotatably connected to one side of the inner wall of the second turntable (7). The upper and lower inner walls of the second turntable (7) are provided with second guide grooves (8). The inner wall of each second guide groove (8) is slidably connected to a second pressure tool (9). The two adjacent ends of the second pressure tools (9) are fixedly connected to a second support plate (10). The adjacent sides of the first turntable (3) and the second turntable (7) are rotatably connected to a moving block (11). The inner walls of the two moving blocks (11) are threadedly connected to a two-way screw rod (12).

2. The surface grinding device for ship hull castings as described in claim 1, characterized in that: The outer wall of one side of the fixed base (1) is connected to a first motor (13), the output end of the first motor (13) is connected to a lead screw, the outer wall of the lead screw is threaded to a movable housing (14), and a grinding component is installed inside the movable housing (14).

3. The surface grinding device for ship hull castings as described in claim 2, characterized in that: The grinding assembly includes a second motor (15) installed on the inner wall of the movable housing (14). The output end of the second motor (15) is connected to a first bevel gear (16). A second bevel gear (17) is meshed on one side of the bottom end of the first bevel gear (16). A connecting rod (18) is fixedly connected to the middle of the second bevel gear (17). A third bevel gear (19) is fixedly connected to the bottom end of the connecting rod (18). A fourth bevel gear (20) is meshed on one side of the outer wall of the third bevel gear (19). A grinding head (21) is fixedly connected to the middle of the fourth bevel gear (20). A mounting housing (25) is sleeved on the outer wall of the connecting rod (18). A worm gear (24) is fixedly connected to the top end of the mounting housing (25). A worm (23) is meshed on one side of the outer wall of the worm gear (24). A third motor (22) is connected to one end of the worm (23).

4. The surface grinding device for ship hull castings as described in claim 3, characterized in that: A nozzle (26) is installed on one side of the outer wall of the fixed base (1). The end of the nozzle (26) away from the fixed base (1) is connected to a pipe. An electric push rod is installed at the bottom of the nozzle (26).

5. The surface grinding device for ship hull castings as described in claim 4, characterized in that: Each of the first presses (5) is slidably connected to the inner wall of the fixed plate (2), and each of the second presses (9) is slidably connected to the inner wall of the fixed plate (2).

6. The surface grinding device for ship hull castings as described in claim 5, characterized in that: Each of the second support plate (10) and the first support plate (6) is made of wear-resistant material, and each of the second support plate (10) and the first support plate (6) has anti-slip texture on its surface.

7. The surface grinding device for ship hull castings as described in claim 6, characterized in that: The outer wall of the second motor (15) is fixedly connected to the inner wall of the movable housing (14), and the outer wall of the third motor (22) is fixedly connected to the inner wall of the movable housing (14).

8. The surface grinding device for ship hull castings as described in claim 7, characterized in that: The bottom end of the movable outer shell (14) is slidably connected to the top end of the fixed base (1), and the end of the lead screw away from the first motor (13) is rotatably connected to the inner wall of the fixed base (1).

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