Mechanical floating polishing device for surface treatment of thin-walled metal parts

Abstract

The utility model relates to the technical field of machining, more particularly to a kind of mechanical floating polishing device for thin-walled metal piece surface treatment, including floating mechanism, the floating mechanism includes upper support plate and lower floating plate, upper support plate and lower floating plate are connected by sliding spring, the lower floating plate is connected with angle grinder.Sliding spring has the advantages of small mass and small size, sliding spring is used as the actuator of sliding system, the force received by sliding spring will be transmitted to the electric grinding disc through the lower floating plate and the constraint structure, so the movement characteristics and stress characteristics of the floating mechanism and the electric grinding disc in the entire floating polishing device in the polishing direction are completely the same, and the force received by the floating mechanism is equivalent to the force received by the grinding disc.In the process of polishing by the industrial robot driving the angle grinder through the floating mechanism, the angle grinder maintains stable contact with the surface to be polished in response to the change of the part contour size, realizing flexible polishing.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically, a mechanical floating grinding device for surface treatment of thin-walled metal parts. Background Technology

[0002] In the thermal spraying industry, the surface of the parts needs to be pretreated before spraying. Pretreatment includes wiping the surface of the parts with ethanol or other solutions and heat treatment at a certain temperature to remove oil, moisture and other substances that affect the coating quality. Usually, after cleaning, sandblasting is used to further clean the surface of the substrate and increase the surface roughness of the parts. However, sandblasting is obviously not suitable for thin-walled parts (substrate thickness ≤ 1.5mm), as it will cause severe deformation of the parts. Combined with subsequent plasma spraying, the deformation of the parts will be more severe, sometimes reaching as high as 10mm.

[0003] Therefore, to ensure minimal deformation of thin-walled parts during pretreatment, a process that significantly reduces the amount of deformation caused by pretreatment should be adopted. This ensures minimal deformation while also guaranteeing a good bond between the adhesive layer and the substrate surface. Grinding is typically used to clean the part surface, removing the oxide layer and exposing the fresh metal surface. However, the commonly used manual grinding method has the following problems: firstly, it is labor-intensive, inefficient, and cannot guarantee uniform grinding, resulting in poor grinding quality; secondly, manual grinding generates a lot of dust, which can affect health.

[0004] In view of this, this utility model is hereby proposed. Utility Model Content

[0005] This invention provides a mechanical floating grinding device for surface treatment of thin-walled metal parts, which solves the problem of deformation caused by sandblasting of thin-walled parts in thermal spraying.

[0006] A mechanical floating grinding device for surface treatment of thin-walled metal parts is characterized by comprising a floating mechanism, wherein the floating mechanism includes an upper support plate and a lower floating plate, which are connected by a sliding spring, and the lower floating plate is connected to an angle grinder.

[0007] Specifically, the upper support plate is fixedly connected to the industrial robot.

[0008] Specifically, the upper support plate is fixedly connected to the industrial robot via an L-shaped mounting plate.

[0009] Specifically, a recessed platform is provided on the upper surface of the upper support plate, and the recessed platform is fixedly connected to the horizontal plate of the L-shaped mounting plate.

[0010] Specifically, the lower floating plate is connected to the angle grinder through a constraint structure, which includes an O-ring locking mechanism. The O-ring locking mechanism is fitted around the middle of the angle grinder, and the upper part of the O-ring locking mechanism is connected to the lower floating plate through an adjustable component.

[0011] Specifically, the constraint structure also includes a U-shaped load-bearing mechanism, the closed end of which is connected to the lower floating plate by fasteners, and the open end is hinged to the front end of the angle grinder.

[0012] Specifically, the U-shaped load-bearing mechanism is provided with a third threaded hole, and the front end of the angle grinder is hinged to the U-shaped load-bearing mechanism through the third threaded hole.

[0013] Specifically, both the upper support plate and the lower floating plate are rectangular plates, and there are four sliding springs distributed at the four corners between the upper support plate and the lower floating plate.

[0014] Specifically, the upper support plate is provided with a third through hole, the lower floating plate is provided with a fourth through hole, and the two ends of the sliding spring are respectively connected to the third through hole of the upper support plate and the fourth through hole of the lower floating plate.

[0015] The advantages of this utility model are specifically reflected in the following aspects:

[0016] (1) The present invention provides an upper support plate and a lower floating plate connected by a sliding spring at the upper end of the angle grinder. The lower floating plate is connected to the angle grinder, which can ensure that the angle grinder can adapt to the change of the outline size of the part and maintain stable contact with the grinding surface during the grinding of thin-walled parts, so as to achieve flexible grinding and improve the surface quality of the workpiece.

[0017] (2) This utility model connects the angle grinder to the floating structure by setting an adjustable constraint structure. This allows the upper support plate of the floating structure to be connected to the robot. The robot controls the grinding device to work without manual operation, freeing up labor and avoiding personal injury. It can also meet the grinding needs of different surfaces on various complex parts. On the other hand, the floating structure of this utility model is connected to the robot through an L-shaped mounting plate, which facilitates the installation and disassembly of the grinding device and the industrial robot. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure in an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the L-shaped mounting plate in an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the floating mechanism in an embodiment of the present utility model;

[0021] Figure 4This is a schematic diagram of the upper support plate in an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the lower floating plate in an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the guide column in an embodiment of the present utility model;

[0024] Figure 7 This is a schematic diagram of the sliding spring in an embodiment of this utility model;

[0025] Figure 8 This is a schematic diagram of the U-shaped load-bearing mechanism at the front of the angle grinder in this embodiment of the present invention;

[0026] Figure 9 This is a schematic diagram of the O-ring locking mechanism at the tail of the angle grinder in this embodiment of the present invention;

[0027] Figure 10 This is a schematic diagram of the angle adjustment screw at the tail of the angle grinder in an embodiment of this utility model.

[0028] In the diagram: 1. L-shaped mounting plate; 2. Floating mechanism; 3. U-shaped load-bearing mechanism; 4. Angle grinder; 5. O-ring locking mechanism; 6. Angle adjusting screw; 11. First through hole; 12. Second through hole; 21. Upper support plate; 22. Lower floating plate; 23. Sliding spring; 24. Guide post; 211. Third through hole; 212. Countersunk platform; 213. First threaded hole; 221. Second threaded hole; 222. Fourth through hole; 223. Fifth through hole; 31. Third threaded hole; 32. Front fixing post; 51. Tail fixing post. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0030] refer to Figures 2 to 8This utility model provides a mechanical floating grinding device for surface treatment of thin-walled metal parts, including a floating mechanism 2. The floating mechanism 2 includes an upper support plate 21 and a lower floating plate 22, which are connected by a sliding spring 23. The lower floating plate 22 is connected to an angle grinder 4. The upper surface of the upper support plate 21 is provided with a countersunk platform 212 and an L-shaped mounting plate 1. The horizontal plate of the L-shaped mounting plate 1 is embedded in the countersunk platform 212 and fixedly connected. The vertical plate of the L-shaped mounting plate 1 is fixedly connected to the end of an industrial robot by fasteners. The sliding spring 23 has the advantages of small mass and small size. Using the sliding spring 23 as the actuator of the sliding system, the force on the sliding spring 23 is transmitted to the electric grinding disc of the angle grinder 4 through the lower floating plate 22. Therefore, the floating mechanism 2 and the electric grinding disc in the entire floating grinding device have the same motion characteristics and force characteristics in all grinding directions. The force on the floating mechanism 2 is equal to the force on the grinding disc. During the grinding process, the industrial robot drives the angle grinder 4 through the floating mechanism 2. The angle grinder 4 adapts to the changes in the outline size of the part and maintains stable contact with the grinding surface to achieve flexible grinding.

[0031] refer to Figure 9 and Figure 10 The lower floating plate 22 is connected to the angle grinder 4 via a constraint structure, which includes an O-ring locking mechanism 5 and a U-shaped load-bearing mechanism 3. The O-ring locking mechanism 5 is fitted around the middle of the angle grinder 4, and the open end of the U-shaped load-bearing mechanism 3 is hinged to the front end of the angle grinder 4. The upper end of the O-ring locking mechanism 5 and the closed end of the U-shaped load-bearing mechanism 3 are connected to the lower floating plate 22 via fasteners. The U-shaped load-bearing mechanism 3 is provided with a third threaded hole 31, and the front end of the angle grinder 4 is hinged to the U-shaped load-bearing mechanism 3 via the third threaded hole 31. In addition, the lower floating plate 22 is also provided with a second threaded hole 221 and a fifth through hole 223. The O-ring locking mechanism 5 is connected to the second threaded hole 221 of the lower floating plate 22 via an adjusting screw; the U-shaped load-bearing mechanism 3 is fixedly connected to the fifth through hole 223 of the lower floating plate 22 via fasteners. During grinding, the length of the adjusting screw can be freely adjusted, allowing the angle grinder 4 to rotate at a certain angle along the axis of the third threaded hole 31, thus enhancing the flexibility of the angle grinder 4 and enabling it to adapt to different workpieces.

[0032] Furthermore, the upper support plate 21 is provided with a third through hole 211, and the lower floating plate 22 is provided with a fourth through hole 222. The two ends of the sliding spring 23 are respectively connected to the third through hole 211 of the upper support plate 21 and the fourth through hole 222 of the lower floating plate 22. The through holes and threaded holes are evenly distributed. Preferably, both the upper support plate 21 and the lower floating plate 22 are rectangular plates, and there are four sliding springs 23 distributed at the four corners between the upper support plate 21 and the lower floating plate 22. This ensures uniform force distribution and a more stable grinding process.

[0033] The working principle of a mechanical floating grinding device for surface treatment of thin-walled metal parts is as follows: An industrial robot is fastened to the floating grinding device, giving them identical motion characteristics; the end effector movement of the industrial robot is the movement of the floating grinding device. During grinding, the floating mechanism 2 is driven by force to bring the grinding disc into contact with the surface being ground. When the surface being ground changes, the compression characteristics of the sliding spring 23 allow the grinding disc to adapt to this change, maintaining contact with the surface being ground, thus achieving a floating effect.

[0034] When using this device, first install the floating mechanism 2 onto the rigid end of the industrial robot via the L-shaped mounting plate 1; teach the robot the grinding motion trajectory according to the shape of the part to be ground; then start the angle grinder 4 and start the robot motion program to grind; finally, turn off the angle grinder 4 after grinding is completed, and the whole process ends.

[0035] The above description is merely a specific embodiment of this utility model, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this utility model.

[0036] It should be understood that this utility model is not limited to the content already described above, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A mechanical floating grinding device for surface treatment of thin-walled metal parts, characterized in that, It includes a floating mechanism (2), which includes an upper support plate (21) and a lower floating plate (22), which are connected by a sliding spring (23). The lower floating plate (22) is connected to the angle grinder (4). The lower floating plate (22) is connected to the angle grinder (4) through a constraint structure, which includes an O-ring locking mechanism (5). The O-ring locking mechanism (5) is fitted in the middle of the angle grinder (4), and the upper part of the O-ring locking mechanism (5) is connected to the lower floating plate (22) through an adjustable part. The constraint structure also includes a U-shaped load-bearing mechanism (3), the closed end of which is connected to the lower floating plate (22) by fasteners, and the open end is hinged to the front end of the angle grinder (4).

2. The mechanical floating grinding device for surface treatment of thin-walled metal parts according to claim 1, characterized in that, The upper support plate (21) is fixedly connected to the industrial robot.

3. The mechanical floating grinding device for surface treatment of thin-walled metal parts according to claim 2, characterized in that, The upper support plate (21) is fixedly connected to the industrial robot via an L-shaped mounting plate (1).

4. The mechanical floating grinding device for surface treatment of thin-walled metal parts according to claim 3, characterized in that, The upper surface of the upper support plate (21) is provided with a recessed platform (212), which is fixedly connected to the horizontal plate of the L-shaped mounting plate (1).

5. The mechanical floating grinding device for surface treatment of thin-walled metal parts according to claim 1, characterized in that, The U-shaped load-bearing mechanism (3) is provided with a third threaded hole (31), and the front end of the angle grinder (4) is hinged to the U-shaped load-bearing mechanism (3) through the third threaded hole (31).

6. The mechanical floating grinding device for surface treatment of thin-walled metal parts according to claim 1, characterized in that, The upper support plate (21) and the lower floating plate (22) are both rectangular plates. There are four sliding springs (23), which are distributed at the four corners between the upper support plate (21) and the lower floating plate (22).

7. The mechanical floating grinding device for surface treatment of thin-walled metal parts according to claim 1, characterized in that, The upper support plate (21) is provided with a third through hole (211), and the lower floating plate (22) is provided with a fourth through hole (222). The two ends of the sliding spring (23) are respectively connected to the third through hole (211) of the upper support plate (21) and the fourth through hole (222) of the lower floating plate (22).

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