Axial floating grinding set suitable for along-grain polishing

Abstract

The utility model belongs to the field of sealing element polishing equipment, and particularly relates to an axial floating grinding set suitable for along-grain polishing, which comprises a rotating handle and a grinding head component, the grinding head component is connected with a displacement driving component by the aid of the rotating handle and is connected with the rotating handle by the aid of a floating shaft, an inner hole is arranged on the rotating handle, and the inner hole is communicated with the grinding head component. An inner hole is formed in the rotating handle, a sliding groove is formed in the side wall of the inner hole, the sliding groove is parallel to the axial direction of the rotating handle, the floating shaft is arranged in the inner hole in a sleeved mode, a first sliding block guided by the sliding groove is arranged on the floating shaft, the first sliding block drives the floating shaft to synchronously rotate along with the rotating handle, and the floating shaft has the freedom degree of moving up and down in the inner hole. A spring is arranged between the rotating handle and the floating shaft, the floating grinding set can adapt to the shape and the surface fluctuation of the sealing face in a self-adaptive mode, the floating grinding set makes uniform contact with the sealing face of a workpiece, and the grinding and polishing effect is improved.

Description

Technical Field

[0001] This utility model belongs to the field of sealing polishing equipment, specifically relating to an axial floating grinding assembly adapted to parallel polishing. Background Technology

[0002] Gradient polishing is a refined surface treatment process that significantly improves the smoothness and flatness of sealing surfaces by polishing along the grain of the material. Sealing surfaces treated with grain polishing exhibit significantly reduced surface roughness and a more uniform microstructure, thereby minimizing micro-gaps and irregularities between sealing surfaces.

[0003] In traditional polishing processes, polishing tools and sliders or robotic arms are typically rigidly connected. This connection method has several drawbacks, primarily limited by the complex contours of curved workpieces and the positioning accuracy of the displacement drive components. When processing complex polishing surfaces, if the polishing head cannot be precisely positioned, uneven contact often occurs on the workpiece surface, resulting in some areas being over-polished while others are under-polished. This uneven polishing effect makes it difficult to precisely control the polishing force, severely impacting the overall polishing quality and leading to unsatisfactory finished products with low practicality. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides an axial floating grinding assembly adapted to parallel polishing, which can adapt to the shape and surface undulation of the sealing surface, and make uniform contact with the sealing surface of the workpiece, thereby improving the grinding and polishing effect.

[0005] The specific technical solution adopted in this utility model is as follows:

[0006] An axially floating grinding assembly adapted for parallel-grain polishing has a degree of freedom of movement relative to the worktable, driven by a displacement drive component. The floating grinding assembly includes a rotating handle and a grinding head assembly. The grinding head assembly is connected to the displacement drive component via the rotating handle and a floating shaft. The rotating handle has an inner hole with a groove on its sidewall, the groove being parallel to the axial direction of the rotating handle. The floating shaft is fitted within the inner hole and has a first slider guided by the groove. The first slider drives the floating shaft to rotate synchronously with the rotating handle, and the floating shaft has a degree of freedom of vertical movement within the inner hole. A spring is provided between the rotating handle and the floating shaft.

[0007] The inner hole on the rotating handle includes a large-diameter hole and a small-diameter hole arranged sequentially along the axial direction. The floating shaft is provided with a protrusion located inside the large-diameter hole. The spring is located inside the large-diameter hole and is connected to the rotating handle and the protrusion respectively.

[0008] The large-diameter hole is located above the small-diameter hole. The upper end of the rotating handle is fixedly connected to an adapter ring that is connected to the motor. The adapter ring is connected to the upper end of the spring. The lower end of the spring is connected to the upper end of the convex edge. The shoulder of the inner hole cooperates with the convex edge to form a vertical limit on the floating shaft.

[0009] The spring mentioned is a compression spring.

[0010] The displacement drive assembly includes an X-axis slide module, a Y-axis slide module, and a Z-axis slide module that cooperate with each other. The Z-axis slide module is provided with a second slider with a motor, and the rotating handle is driven by the motor.

[0011] The rotating handle is connected to the second slider via a base, and the rotating handle has the freedom to rotate on the base via a bearing.

[0012] The grinding head assembly includes a grinding head and a clamp. The grinding head includes a working end and a mounting end. The mounting end is connected to a floating shaft. The working end is inserted into the clamp to clamp the sandpaper. The clamp is connected to the mounting end by means of a tension spring.

[0013] The beneficial effects of this utility model are:

[0014] 1. In this utility model, the grinding head assembly is connected to the rotating handle by means of a floating shaft. The rotating handle is provided with a sliding groove. The first slider on the floating shaft is guided and cooperated with the sliding groove. The floating shaft can rotate synchronously with the rotating handle and also has the freedom to move up and down along the axis of the rotating handle. The spring provides elastic force for the floating shaft, enabling the grinding head assembly to better fit the complex contour of the sealing surface and overcome the positioning accuracy error of the displacement drive assembly, improve the uniformity and accuracy of polishing, and enhance the overall grinding and polishing effect.

[0015] 2. When the grinding head assembly contacts the high point of the workpiece surface, the floating shaft can overcome the spring force and move upward. When the grinding head assembly passes the low point of the workpiece surface, the spring can push the floating shaft downward, so that the grinding head assembly always fits the workpiece surface, ensuring the continuity and uniformity of polishing.

[0016] 3. The grinding head assembly has a simple structure, and the sandpaper can be replaced quickly and easily. The clamp and grinding head work together to hold the sandpaper, and the tension spring is used to clamp the sandpaper tightly, which improves the stability of the sandpaper on the grinding head assembly. Attached Figure Description

[0017] Figure 1 This is a diagram showing the usage state of this utility model;

[0018] Figure 2 This is a schematic diagram of the assembly of the present invention with the motor;

[0019] Figure 3 for Figure 2 Exploded view;

[0020] Figure 4 for Figure 2 The main view;

[0021] Figure 5 for Figure 4 AA-direction cross section;

[0022] Figure 6 This is an exploded view of the grinding head assembly;

[0023] In the attached diagram, 1 is the worktable, 2 is the rotating handle, 3 is the floating shaft, 4 is the inner hole, 401 is the slide groove, 402 is the large diameter hole, 403 is the small diameter hole, 5 is the first slider, 6 is the spring, 7 is the flange, 8 is the X-axis slide module, 9 is the Y-axis slide module, 10 is the Z-axis slide module, 11 is the motor, 12 is the second slider, 13 is the base, 14 is the bearing, 15 is the grinding head, 1501 is the working end, 1502 is the mounting end, 16 is the clamp, 17 is the tension spring, 18 is the coupling, and 19 is the adapter ring. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] Specific embodiments, such as Figure 1 As shown, this utility model relates to an axially floating grinding assembly adapted for parallel polishing, which has a degree of freedom of movement relative to the worktable 1 by means of a displacement drive component, such as... Figure 2-5 As shown, the floating grinding assembly includes a rotating handle 2 and a grinding head assembly. The grinding head assembly is connected to a displacement drive assembly via the rotating handle 2, and the grinding head assembly is connected to the rotating handle 2 via a floating shaft 3. The rotating handle 2 has an inner hole 4, and a groove 401 is provided on the side wall of the inner hole 4. The groove 401 is parallel to the axial direction of the rotating handle 2. The floating shaft 3 is fitted into the inner hole 4, and a first slider 5 guided by the groove 401 is provided on the floating shaft 3. The first slider 5 drives the floating shaft 3 to rotate synchronously with the rotating handle 2, and the floating shaft 3 has the freedom to move up and down within the inner hole 4. A spring 6 is provided between the rotating handle 2 and the floating shaft 3. Preferably, as... Figure 5 As shown, the first slider 5 is a pin inserted into the floating shaft 3. The inner hole 4 has 1-4 grooves 401 on its side wall. In this embodiment, the inner hole 4 has 4 grooves 401 on its side wall. The end of the pin extends from the floating shaft 3 and is guided and engaged with the grooves 401 respectively, which helps to improve the stability between the floating shaft 3 and the rotating handle 2.

[0026] During operation, the workpiece to be polished is fixed on the worktable 1 by a clamping fixture, and the displacement drive assembly drives the floating grinding group to move.

[0027] This embodiment relates to an axial floating grinding assembly adapted for parallel polishing. With the cooperation of the first slider 5 and the groove 401, the floating shaft 3 can not only rotate with the rotating handle 2, but also has the freedom to move up and down in the inner hole 4. At the same time, it avoids relative motion between the floating shaft 3 and the rotating handle 2 in a plane perpendicular to the axial direction of the rotating handle 2, thus maintaining the stability of the operation. The grinding head assembly has the freedom to move up and down relative to the rotating handle 2, which can adapt to the shape and surface undulation of the sealing surface, better fit the complex contour of the sealing surface, and reduce the situation of local over-polishing or under-polishing. The spring 6 pre-compresses the floating shaft 3 to ensure that the grinding head assembly connected to the floating shaft 3 can move. The positioning accuracy error of the displacement drive assembly causes uneven polishing, thereby improving the grinding accuracy and improving the overall grinding and polishing effect.

[0028] Furthermore, such as Figure 5 As shown, the inner hole 4 on the rotating handle 2 includes a large-diameter hole 402 and a small-diameter hole 403 arranged sequentially along the axial direction. The floating shaft 3 is provided with a protruding edge 7 located inside the large-diameter hole 402. The spring 6 is located inside the large-diameter hole 402 and is connected to the rotating handle 2 and the protruding edge 7 respectively. The large-diameter hole 402 is provided to provide space for the installation of the spring 6. The inner diameter of the small-diameter hole 403 is the same as the outer diameter of the floating shaft 3. The side wall of the floating shaft 3 is guided and fitted to the side wall of the small-diameter hole 403 to prevent the floating shaft 3 from wobbling back and forth or left and right in the inner hole 4, and to ensure the stability and reliability of the grinding head assembly.

[0029] The large diameter hole 402 is located above the small diameter hole 403. The upper end of the rotating handle 2 is fixedly connected to the adapter ring 19 connected to the motor 11. The adapter ring 19 is connected to the upper end of the spring 6. The lower end of the spring 6 is connected to the upper end of the convex edge 7. The shoulder of the inner hole 4 cooperates with the convex edge 7 to form a vertical limit on the floating shaft 3. The shoulder is the bottom of the large diameter hole 402, which can prevent the floating shaft 3 from moving excessively and ensure that the floating shaft 3 floats within a reasonable range, further improving the stability and reliability of the grinding head assembly.

[0030] Spring 6 is a compression spring. Spring 6 can provide elastic force to floating shaft 3. When the grinding head assembly contacts the high point of the workpiece surface, floating shaft 3 can overcome the spring force and move upward to avoid the grinding head assembly applying too much pressure to the workpiece surface and causing damage. When the grinding head assembly passes the low point of the workpiece surface, spring 6 can push floating shaft 3 downward to keep the grinding head assembly always in contact with the workpiece surface and ensure the continuity and uniformity of polishing.

[0031] The displacement drive assembly includes an X-axis slide module 8, a Y-axis slide module 9, and a Z-axis slide module 10 that cooperate with each other. The Z-axis slide module 10 is equipped with a second slider 12 with a motor 11. The rotating handle 2 is driven by the motor 11. The displacement drive assembly enables the grinding head assembly to move in three-dimensional space relative to the worktable. It can flexibly adjust the position and path of the floating grinding set according to the shape, size and polishing process requirements of the workpiece to meet the polishing needs of different workpieces and improve the versatility and adaptability of the floating grinding set. The motor 11 provides power to the rotating handle 2, so that the rotating handle 2 carries the floating shaft 3 and the grinding head assembly to rotate and polish the surface of the workpiece.

[0032] The rotating handle 2 is connected to the second slider 12 via the base 13, and the rotating handle 2 has the freedom to rotate on the base 13 via the bearing 14. The rotating handle 2 is located inside the cavity of the base 13, and the upper end of the rotating handle 2 is fixed to the rotating shaft of the motor 11 via the adapter ring and coupling 18. The rotating shaft of the motor 11 and the rotating handle 2 are both arranged parallel to the Z-axis. The base 13, the rotating handle 2, the adapter ring, and the bearing 14 are combined together, and the rotating handle 2 is coaxial with the base 13, ensuring that the rotating handle only has the freedom to rotate radially along the base 13 and does not have the freedom to move along the Z-axis. This reduces the risk of axial force transmission to the motor shaft caused by the grinding head assembly hitting the workpiece, thereby protecting the motor.

[0033] like Figure 6 As shown, the grinding head assembly includes a grinding head 15 and a clamp 16. The grinding head 15 includes a working end 1501 and a mounting end 1502. The mounting end 1502 is connected to the floating shaft 3. The working end 1501 is inserted into the clamp 16 to clamp the sandpaper. The clamp 16 is connected to the mounting end 1502 by means of a tension spring 17. In this embodiment, the two sides of the working end 1501 are inclined surfaces, and the lower end of the working end 1501 is an arc surface. The clamp 16 is a collar with a tapered hole. Before polishing, the sandpaper is placed... The paper is wrapped around the arc and slope of the working end 1501. The clamp 16 is placed on the working end 1501 wrapped with sandpaper from bottom to top. The mounting end 1502 and the clamp 16 are respectively provided with mounting rods. The two ends of the tension spring 17 are respectively hung on the mounting rods on the mounting end 1502 and the clamp 16. The tension spring 17 tightens the clamp 16 to clamp the sandpaper, so that the sandpaper is in close contact with the working end 1501 and will not move, thereby improving the stability of the sandpaper on the grinding head assembly. On the other hand, it also helps to quickly change the sandpaper.

Claims

1. An axially floating grinding assembly adapted for parallel polishing, having a degree of freedom of movement relative to a worktable (1) by means of a displacement drive assembly, the floating grinding assembly comprising a rotating handle (2) and a grinding head assembly, the grinding head assembly being connected to the displacement drive assembly via the rotating handle (2), characterized in that: The grinding head assembly is connected to the rotating handle (2) via a floating shaft (3). The rotating handle (2) is provided with an inner hole (4) and a sliding groove (401) is provided on the side wall of the inner hole (4). The sliding groove (401) is arranged parallel to the axis of the rotating handle (2). The floating shaft (3) is sleeved in the inner hole (4). The floating shaft (3) is provided with a first slider (5) that guides the sliding groove (401). The first slider (5) drives the floating shaft (3) to rotate synchronously with the rotating handle (2). The floating shaft (3) has the freedom to move up and down in the inner hole (4). A spring (6) is provided between the rotating handle (2) and the floating shaft (3).

2. The axial floating grinding assembly adapted for parallel polishing according to claim 1, characterized in that: The inner hole (4) on the rotating handle (2) includes a large diameter hole (402) and a small diameter hole (403) arranged sequentially along the axial direction. The floating shaft (3) is provided with a protruding edge (7) located in the large diameter hole (402). The spring (6) is located in the large diameter hole (402) and is connected to the rotating handle (2) and the protruding edge (7) respectively.

3. An axial floating grinding assembly adapted for parallel polishing according to claim 2, characterized in that: The large diameter hole (402) is located above the small diameter hole (403). The upper end of the rotating handle (2) is fixedly connected to the adapter ring (19) connected to the motor (11). The adapter ring (19) is connected to the upper end of the spring (6). The lower end of the spring (6) is connected to the upper end of the convex edge (7). The shoulder of the inner hole (4) cooperates with the convex edge (7) to form a vertical limit on the floating shaft (3).

4. An axial floating grinding assembly adapted for parallel polishing according to claim 3, characterized in that: The spring (6) mentioned above is a compression spring.

5. An axial floating grinding assembly adapted for parallel polishing according to claim 1, characterized in that: The displacement drive assembly includes an X-axis slide module (8), a Y-axis slide module (9), and a Z-axis slide module (10) that cooperate with each other. The Z-axis slide module (10) is provided with a second slider (12) with a motor (11) on it. The rotating handle (2) is driven by the motor (11).

6. An axial floating grinding assembly adapted for parallel polishing according to claim 5, characterized in that: The rotating handle (2) is connected to the second slider (12) via a base (13), and the rotating handle (2) has a degree of freedom to rotate on the base (13) via a bearing (14).

7. An axial floating grinding assembly adapted for parallel polishing according to claim 1, characterized in that: The grinding head assembly includes a grinding head (15) and a clamp (16). The grinding head (15) includes a working end (1501) and a mounting end (1502). The mounting end (1502) is connected to a floating shaft (3). The working end (1501) is inserted into the clamp (16) to clamp the sandpaper. The clamp (16) is connected to the mounting end (1502) by means of a tension spring (17).

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