Flexible floating mechanism for machining grinding head

Abstract

The utility model discloses a machining grinding head flexible floating mechanism which comprises a fixing plate, a connecting shaft and an elastic piece, the fixing plate is parallel to the grinding face of a grinding wheel on a grinding head, the connecting shaft is perpendicular to the fixing plate, the first end of the connecting shaft is fixedly connected to the grinding head, and the second end of the connecting shaft penetrates through the fixing plate and is connected with the fixing plate in a sliding mode. According to the flexible floating mechanism of the machining grinding head, the grinding head is installed on the fixing plate in the sliding mode through the connecting shaft, the elastic piece is arranged between the fixing plate and the grinding head, the grinding head can move relative to the fixing plate, and floating contact between a grinding wheel and a workpiece is achieved. The grinding head is prevented from being pressed too tightly in the grinding work, and the situation that the grinding wheel is stuck due to too large pressure is reduced.

Description

Technical Field

[0001] This utility model relates to the field of machining and grinding equipment technology, and in particular to a flexible floating mechanism for machining and grinding heads. Background Technology

[0002] A high-speed pneumatic polishing and grinding machine is a surface treatment device that uses compressed gas as a power source. Its working principle is as follows: when the equipment is connected to a high-pressure gas source, the high-pressure gas drives the internal impeller mechanism to generate high-speed rotation. The impeller drives the sandpaper or grinding wheel to rotate through the transmission device, thereby achieving polishing, deburring, rust removal and surface finishing of the workpiece surface.

[0003] In practical industrial applications, the equipment mainly has the following two typical usage scenarios and their technical pain points: (1) Manual operation mode. In the manual handheld operation scenario, the operator needs to adjust the grinding pressure by relying on tactile feedback. However, this operation mode has obvious technical limitations: when the pressure is too high, the frictional resistance generated between the grinding wheel and the workpiece will cause the impeller to stop rotating, causing the equipment to stall; conversely, if the pressure is insufficient, the material removal rate will be significantly reduced, seriously affecting the processing efficiency. This operation mode that relies on manual experience is difficult to guarantee process stability and processing consistency. (2) Robotic arm automated operation mode. On automated production lines, a six-degree-of-freedom robotic arm is usually used to carry a pneumatic grinding machine for processing. Although the mechanical system can achieve precise motion control in multiple angles and omnidirectional positions, since the current technology mostly adopts a rigid contact method, it also faces the problem of pressure control: excessive end effector pressure will cause the grinding wheel to stall, causing the pneumatic system to lock up; while insufficient pressure will not achieve the expected surface treatment effect. This rigid contact mechanism lacks adaptive adjustment capability, which restricts the quality and reliability of automated processing. Existing technologies face the challenge of balancing pressure and efficiency in both of the aforementioned application scenarios, necessitating the development of solutions with intelligent pressure compensation capabilities to overcome the technological bottlenecks of traditional pneumatic grinding equipment. Utility Model Content

[0004] This invention addresses the issue of uneven feed accumulation inside the material tray of a drying oven, which affects the drying effect, by proposing a flexible floating mechanism for a machining grinding head.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A flexible floating mechanism for a machining grinding head includes a fixed plate, a connecting shaft, and an elastic element. The fixed plate is arranged parallel to the grinding surface of the grinding wheel on the grinding head. The connecting shaft is perpendicular to the fixed plate. The first end of the connecting shaft is fixedly connected to the grinding head, and the second end of the connecting shaft passes through the fixed plate and is slidably connected to the fixed plate. A limit plate is fixedly connected to the second end of the connecting shaft to prevent the fixed plate from coming off the second end of the connecting shaft. An elastic element is provided between the fixed plate and the grinding head.

[0007] Preferably, the fixing plate is provided with a mounting through hole for the connecting shaft to pass through, and a linear bearing is fixedly installed inside the mounting through hole. The connecting shaft passes through the inner hole of the linear bearing, and the connecting shaft forms an axial sliding connection with the fixing plate through the linear bearing.

[0008] Preferably, a first limiting plate is provided at the second end of the connecting shaft. The first limiting plate is a first cylinder, and the outer diameter of the first limiting plate is larger than the inner diameter of the linear bearing.

[0009] Preferably, the flexible floating mechanism of the machining grinding head further includes an isolation sleeve, which is fitted over the linear bearing. The first end of the isolation sleeve is connected to a fixed plate, and the second end of the isolation sleeve is connected to a limiting plate at the second end of the connecting shaft.

[0010] Preferably, the first end of the isolation sleeve is provided with a first connecting sleeve, which is threadedly connected to the limiting plate.

[0011] Preferably, a second limiting plate is provided at the second end of the connecting shaft. The second limiting plate is a stepped second cylinder. The upper outer diameter of the second limiting plate is larger than the lower outer diameter of the second limiting plate. The lower outer diameter of the second limiting plate is larger than the inner diameter of the linear bearing. A first external thread is provided on the lower side of the second limiting plate. The first external thread is used to thread-connect the first connecting sleeve.

[0012] Preferably, the second end of the isolation sleeve is provided with a second connecting sleeve, which is threadedly connected to the fixing plate.

[0013] Preferably, the fixing plate is provided with multiple annular connecting seats, which are sleeved on the outside of the linear bearing. The connecting seats are stepped annular bodies, and the lower outer diameter of the connecting seats is larger than the upper outer diameter of the second limiting plate. The upper side of the connecting seats is provided with a second external thread, which is used to thread the second connecting sleeve.

[0014] Preferably, the elastic element is sleeved on the outside of the connecting shaft.

[0015] Preferably, a connecting plate is provided on one side of the fixing plate, and the connecting plate is provided with multiple second connecting holes.

[0016] The beneficial effects of this utility model are:

[0017] 1. The flexible floating mechanism of the grinding head in this machine slides the grinding head onto the fixed plate via a connecting shaft. An elastic element is provided between the fixed plate and the grinding head. The fixed plate can be directly installed on a deburring machine or CNC machine tool. The grinding head can move relative to the fixed plate to achieve floating contact between the grinding wheel and the workpiece. This can prevent the grinding head from being pressed too tightly during grinding and reduce the possibility of the grinding wheel getting stuck due to excessive pressure.

[0018] 2. The flexible floating mechanism of the grinding head of this machine achieves axial sliding connection between the connecting shaft and the fixed plate through a linear bearing. An isolation sleeve is set on the outside of the linear bearing to isolate the connection between the linear bearing and the connecting shaft, prevent grinding dust from entering the interior of the linear bearing, and reduce the possibility of jamming of the linear bearing. The isolation sleeve and the end of the connecting shaft are detachably connected by threads, which facilitates the lubrication of the linear bearing. Attached Figure Description

[0019] Figure 1 A schematic diagram of the flexible floating mechanism for the grinding head of this machine;

[0020] Figure 2 A schematic diagram of the side of the flexible floating mechanism of the grinding head for this machine (Example 1);

[0021] Figure 3 A schematic diagram of the structure of the connecting shaft of the flexible floating mechanism for the grinding head of this machine;

[0022] Figure 4 A schematic diagram of the side of the flexible floating mechanism of the grinding head for this machine (Example 2);

[0023] Figure 5 This is a schematic diagram of the structure of a grinding head in the prior art.

[0024] In the diagram: 1. Grinding head; 2. Grinding wheel; 3. Fixing plate; 4. Linear bearing; 5. Connecting shaft; 6. Elastic element; 7. First limiting plate; 8. Second limiting plate; 9. Isolation sleeve; 101. First connecting hole; 31. Connecting plate; 32. Connecting seat; 41. Flange part; 51. Connecting head; 91. First connecting sleeve; 92. Second connecting sleeve. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] refer to Figure 5In existing technology, a grinding wheel 2 is provided on one side of the pneumatic grinding head 1. The grinding wheel 2 is rotatably connected to the grinding head 1. The grinding wheel 2 can generate rotational motion driven by gas for grinding the surface of the workpiece. Four first connecting holes 101 are provided on the top of the grinding head 1. The first connecting holes 101 can be fitted with bolts to connect the grinding head 1 to the actuator, completing the installation and fixation of the grinding head 1. The actuator includes, but is not limited to, a robotic arm, a deburring machine, or a CNC machine. In existing technology, the connection between the grinding head 1 and the actuator is generally rigid. The actuator pressure acts directly on the grinding wheel 2 of the grinding head 1. Excessive pressure will cause the grinding wheel to stall.

[0028] To address the above situation, this embodiment proposes a flexible floating mechanism for machining grinding heads. This flexible floating mechanism can connect the grinding head and the actuator to achieve flexible grinding. (Refer to...) Figure 1-2 In this embodiment, the flexible floating mechanism of the machining grinding head includes a fixed plate 3 and a connecting shaft 5. The fixed plate 3 is arranged parallel to the grinding surface of the grinding wheel 2 on the grinding head 1. The connecting shaft 5 is perpendicular to the fixed plate 3. The first end of the connecting shaft 5 is fixedly connected to the grinding head 1, and the second end of the connecting shaft 5 passes through the fixed plate 3 and is slidably connected to the fixed plate 3. The fixed plate 3 can move axially between the first end and the second end of the connecting shaft 5.

[0029] Specifically, a connector 51 is fixedly provided at the first end of the connecting shaft 5. The grinding head 1 enlarges the first connecting hole 101 to obtain a countersunk hole that matches the connector 51. The end of the connector 51 is fixedly connected to the countersunk hole of the grinding head 1 by a thread. A first limiting plate 7 is fixedly connected to the second end of the connecting shaft 5. The first limiting plate 7 is a first cylinder. The outer diameter of the first limiting plate 7 is larger than the inner diameter of the linear bearing 4. The first limiting plate 7 is used to prevent the fixing plate 3 from coming off the second end of the connecting shaft 5.

[0030] refer to Figure 3 An elastic element 6 is provided between the fixed plate 3 and the grinding head 1. In this embodiment, the elastic element 6 is a spring. The elastic element 6 is sleeved on the outside of the connecting shaft 5 and has an elastic force. When not being processed, it keeps the grinding head 1 in a relatively fixed position on the fixed plate 3.

[0031] The aforementioned fixing plate 3 is provided with a mounting through hole for the connecting shaft 5 to pass through. A linear bearing 4 is fixedly installed inside the mounting through hole, and the linear bearing 4 is arranged coaxially with the mounting through hole. The linear bearing 4 is a linear bearing with a flange at the end, and the flange portion 41 of the linear bearing 4 is provided at the end. The flange portion 41 of the linear bearing 4 is fixedly connected to the fixing plate 3 by screws. The connecting shaft 5 is a smooth shaft, and the outer diameter of the connecting shaft 5 matches the inner hole of the linear bearing 4. The connecting shaft 5 passes through the inner hole of the linear bearing 4, and the connecting shaft 5 can move axially relative to the linear bearing 4. The connecting shaft 5 forms an axial sliding connection with the fixing plate 3 through the linear bearing 4.

[0032] In this embodiment, a connecting plate 31 is provided on one side of the fixing plate 3. The connecting plate 31 is provided with multiple second connecting holes, which can be used with bolts to realize the connection between the grinding head 1 and the actuator, thus completing the installation and fixing of the grinding head 1. The actuator includes, but is not limited to, a robotic arm, a deburring machine, or a CNC machine.

[0033] In this embodiment, the flexible floating mechanism of the machining grinding head slides the grinding head 1 onto the fixed plate 3 via the connecting shaft 5. An elastic element 6 is provided between the fixed plate 3 and the grinding head 1. The fixed plate 3 can be directly installed on a deburring machine or a CNC machine tool. The grinding head 1 can move relative to the fixed plate 3 to achieve floating contact between the grinding wheel 2 and the workpiece. This can prevent the grinding head 1 from being pressed too tightly during the grinding process and reduce the possibility of the grinding wheel 2 getting stuck due to excessive pressure.

[0034] Example 2

[0035] refer to Figure 5 Unlike Embodiment 1, the flexible floating mechanism of the machining grinding head in this embodiment also includes an isolation sleeve 9. The first end of the isolation sleeve 9 is connected to the fixed plate 3, and the second end of the isolation sleeve 9 is connected to the limiting plate at the second end of the connecting shaft 5. The isolation sleeve 9 is fitted over the linear bearing 4 and is used to isolate the connection between the linear bearing 4 and the connecting shaft 5, preventing grinding dust from entering the interior of the linear bearing 4 and reducing the possibility of jamming. In this embodiment, the isolation sleeve 9 is a rubber telescopic sleeve, used to accommodate the relative sliding between the linear bearing 4 and the connecting shaft 5.

[0036] Specifically, a second limiting plate 8 is provided at the second end of the connecting shaft 5. The second limiting plate 8 is a stepped second cylinder. The upper outer diameter of the second limiting plate 8 is larger than the lower outer diameter of the second limiting plate 8, and the lower outer diameter of the second limiting plate 8 is larger than the inner diameter of the linear bearing 4, to prevent the connecting shaft 5 from coming out of the linear bearing 4. A first external thread is provided on the lower side of the second limiting plate 8, and a first connecting sleeve 91 is provided at the first end of the isolation sleeve 9. The first external thread is used to thread the first connecting sleeve 91, realizing the threaded connection between the first connecting sleeve 91 and the second limiting plate 8.

[0037] The isolation sleeve 9 and the second limiting plate 8 are detachably connected by threads, facilitating the separation of the isolation sleeve 9 and the second limiting plate 8. When the linear bearing 4 requires lubrication, the isolation sleeve 9 and the second limiting plate 8 can be separated to facilitate lubrication of the linear bearing 4.

[0038] The aforementioned fixing plate 3 is provided with multiple annular connecting seats 32, which are fitted onto the outside of the linear bearing 4. Each connecting seat 32 is a stepped annular body, with its lower outer diameter larger than the upper outer diameter of the second limiting plate 8. A second external thread is provided on the upper side of the connecting seat 32, and a second connecting sleeve 92 is provided at the second end of the isolation sleeve 9. The second external thread is used to thread-connect the second connecting sleeve 92, thus achieving a threaded connection between the second connecting sleeve 92 and the fixing plate 3.

[0039] In this embodiment, both ends of the isolation sleeve 9 are detachable, making it easy to replace the isolation sleeve 9.

[0040] In this embodiment, the flexible floating mechanism of the machining grinding head has an isolation sleeve 9 on the outside of the linear bearing 4. The isolation sleeve 9 can isolate the connection between the linear bearing 4 and the connecting shaft 5, preventing grinding dust from entering the interior of the linear bearing 4 and reducing the possibility of jamming. Furthermore, the isolation sleeve 9 and the second end of the connecting shaft 5 are detachably connected by threads, facilitating lubrication of the linear bearing 4.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A flexible floating mechanism for a machining polishing head, characterized in that, The device includes a fixed plate (3), a connecting shaft (5), and an elastic element (6). The fixed plate (3) is arranged parallel to the grinding surface of the grinding wheel (2) on the grinding head (1). The connecting shaft (5) is perpendicular to the fixed plate (3). The first end of the connecting shaft (5) is fixedly connected to the grinding head (1). The second end of the connecting shaft (5) passes through the fixed plate (3) and is slidably connected to the fixed plate (3). A limit plate is fixedly connected to the second end of the connecting shaft (5) to prevent the fixed plate (3) from coming off the second end of the connecting shaft (5). An elastic element (6) is provided between the fixed plate (3) and the grinding head (1).

2. The flexible float mechanism for a machining polishing head of claim 1, wherein, The fixing plate (3) is provided with a mounting through hole for the connecting shaft (5) to pass through. A linear bearing (4) is fixedly installed inside the mounting through hole. The connecting shaft (5) passes through the inner hole of the linear bearing (4). The connecting shaft (5) forms an axial sliding connection with the fixing plate (3) through the linear bearing (4).

3. The flexible float mechanism for a machining polishing head of claim 2, wherein, The second end of the connecting shaft (5) is provided with a first limiting plate (7), which is a first cylinder. The outer diameter of the first limiting plate (7) is larger than the inner diameter of the linear bearing (4).

4. The flexible float mechanism for a machining polishing head of claim 2, wherein, It also includes an isolation sleeve (9), which is fitted over the outside of the linear bearing (4). The first end of the isolation sleeve (9) is connected to the fixing plate (3), and the second end of the isolation sleeve (9) is connected to the limiting plate at the second end of the connecting shaft (5).

5. The flexible float mechanism for a machining polishing head of claim 4, wherein, The first end of the isolation sleeve (9) is provided with a first connecting sleeve (91), and the first connecting sleeve (91) is threadedly connected to the limiting plate.

6. The flexible float mechanism for a machining polishing head of claim 5, wherein, The second end of the connecting shaft (5) is provided with a second limiting plate (8). The second limiting plate (8) is a stepped second cylinder. The upper outer diameter of the second limiting plate (8) is larger than the lower outer diameter of the second limiting plate (8). The lower outer diameter of the second limiting plate (8) is larger than the inner diameter of the linear bearing (4). The lower side of the second limiting plate (8) is provided with a first external thread. The first external thread is used to thread-connect the first connecting sleeve (91).

7. The flexible float mechanism for a machining polishing head of claim 6, wherein, The second end of the isolation sleeve (9) is provided with a second connecting sleeve (92), which is threadedly connected to the fixing plate (3).

8. The flexible float mechanism for a machining polishing head of claim 7, wherein, The fixing plate (3) is provided with a plurality of annular connecting seats (32). The connecting seats (32) are sleeved on the outside of the linear bearing (4). The connecting seats (32) are stepped annular bodies. The lower outer diameter of the connecting seats (32) is larger than the upper outer diameter of the second limiting plate (8). The upper side of the connecting seats (32) is provided with a second external thread. The second external thread is used to thread-connect the second connecting sleeve (92).

9. The flexible float mechanism for a machining polishing head according to any one of claims 1-8, wherein, The elastic element (6) is sleeved on the outside of the connecting shaft (5).

10. The flexible float mechanism for a machining polishing head of claim 9, wherein, A connecting plate (31) is provided on one side of the fixing plate (3), and a plurality of second connecting holes are provided on the connecting plate (31).

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