Polishing grinding disc device

Abstract

The utility model provides a polishing millstone device which comprises a millstone formed by splicing a plurality of millstone blocks, a mounting frame hinged to the outer ends of the millstone blocks respectively, a flange hinged to the inner ends of the millstone blocks respectively, and a pull rod. The lower portion of the pull rod penetrates through the mounting frame to be detachably connected with the flange and can drive the flange to move up and down relative to the mounting frame so as to drive the inner ends of the multiple millstone blocks to move upwards to the grinding and polishing face of the bottom face of the millstone to form a concave face or drive the inner ends of the multiple millstone blocks to move downwards to the grinding and polishing face of the bottom face of the millstone to form a convex face. According to the utility model, the surface type can be accurately regulated and controlled according to the processing requirement, so that the processing is more convenient, and the waste of time and resources caused by replacing the millstone back and forth due to the processing requirement and irregular surface type is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of optical element processing, in particular to a polishing grinding disc device. Background Art

[0002] Traditional optical machining technologies are mostly simple single-axis or multi-axis machines, which mainly process planes or spherical surfaces. By changing the grinding wheel and process, an appropriate amount of deviation is performed to process small and medium-diameter optical components. The polishing abrasive particles in the grinding wheel are in direct contact with the processing surface, and the swinging friction is used to obtain an ultra-smooth surface.

[0003] The material of the polishing disc is usually soft metal or asphalt resin. Depending on the processing technology, the polishing disc is either on the top or on the bottom. For the polishing disc on the bottom, a trimming plate can be added to trim it during the polishing process to prevent deformation, so as to accurately control the flatness of the processed surface. For the polishing disc on the top, it is difficult to adjust the surface shape in time during the polishing process, which makes the processed surface uneven, resulting in edge collapse or warping. These polishing discs are often large discs with a single shape, and the surface shape cannot be controlled by adjusting the shape of the disc. In addition, the traditional polishing disc is an integral piece. During the polishing process, polishing abrasive particles are only dripped locally at the edge, and the polishing liquid is driven and dispersed to every place by swinging. However, this easily forms an accumulation of dripping polishing abrasive points, and there is less abrasive in the central area, resulting in uneven dispersion, which aggravates the unevenness of the processed surface. Therefore, it is necessary to design and develop a polishing disc that can be spliced ​​and regulated to accurately control the surface shape and evenly disperse the polishing abrasive. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a polishing disc device which can effectively control the surface shape of the polishing disc in view of the above-mentioned deficiencies in the prior art.

[0005] The technical solution adopted to solve the technical problem of the utility model is:

[0006] The utility model provides a polishing grinding disc device, comprising:

[0007] The grinding disc is formed by a plurality of grinding disc blocks, and the plurality of grinding disc blocks are distributed in a circle around the central axis of the grinding disc.

[0008] The mounting frame is hinged to the outer ends of the plurality of grinding disc blocks respectively.

[0009] Flanges are hinged to the inner ends of multiple grinding disc blocks.

[0010] The pull rod, the lower part of which passes through the mounting frame and is detachably connected to the flange, can drive the flange to move up and down relative to the mounting frame, thereby driving the inner ends of multiple grinding disc blocks to move up to the grinding and polishing surface of the bottom surface of the grinding disc to form a concave surface, or driving the inner ends of multiple grinding disc blocks to move down to the grinding and polishing surface of the bottom surface of the grinding disc to form a convex surface.

[0011] The inner end refers to the end close to the center of the grinding disc, and the outer end refers to the end far away from the center of the grinding disc.

[0012] Optionally, a displacement scale is provided on the outer circumferential wall of the pull rod, the middle portion of the pull rod is threadedly connected to the mounting frame, and the lower portion of the pull rod is rotatably connected to the flange.

[0013] Optionally, a through hole cooperating with the lower part of the pull rod is opened on the flange, the lower part of the pull rod passes through the through hole, the lower part of the pull rod is provided with an upper limit part and a lower limit part, and the flange is limited between the upper limit part and the lower limit part.

[0014] Optionally, the diameter of the lower portion of the pull rod is smaller than that of the middle portion, and the step surface between the lower portion and the middle portion of the pull rod forms the upper limit portion.

[0015] Optionally, a clamping groove is provided on the outer circumferential wall of the lower part of the pull rod, a clamping ring is provided in the clamping groove, and the clamping ring forms the lower limit portion.

[0016] Optionally, a receiving groove is provided on the bottom surface of the flange, and the lower part of the pull rod and the clamping ring are placed in the receiving groove.

[0017] Optionally, the grinding disc block is a fan-shaped grinding disc block, and multiple fan-shaped grinding disc blocks are assembled to form a disc-shaped grinding disc; or, the grinding disc block is a triangular grinding disc block, and multiple triangular grinding disc blocks are assembled to form a polygonal grinding disc.

[0018] Optionally, a liquid through hole extending to the middle of the pull rod is opened on the bottom surface, and a liquid inlet hole is opened on the middle side wall, and the liquid inlet hole is connected with the liquid through hole to form a channel for the polishing liquid to enter the grinding disc.

[0019] Optionally, a rotary hole cooperating with a rotary driving tool is provided on the top surface of the pull rod.

[0020] Optionally, the mounting frame is provided with a plurality of outwardly extending support arms, each two support arms correspond to a grinding disc block, and the outer end of the grinding disc block is hinged to its corresponding two support arms respectively; the flange is provided with a plurality of outwardly extending articulated arms, the plurality of articulated arms correspond one-to-one to the plurality of grinding disc blocks, and the articulated arms are hinged to the inner ends of the corresponding grinding discs.

[0021] Beneficial effects:

[0022] The utility model drives the flange to move up and down relative to the mounting frame through a pull rod, thereby driving the inner ends of multiple grinding disc blocks to move up to the grinding and polishing surface of the bottom surface of the grinding disc to form a concave surface. When working, the edge area of ​​the workpiece to be processed has a fast grinding rate, which is suitable for grinding surfaces with high edges and low centers, or driving the inner ends of multiple grinding disc blocks to move down to the grinding and polishing surface of the bottom surface of the grinding disc to form a convex surface. When working, the center area of ​​the workpiece to be processed has a fast grinding rate, which is suitable for grinding surfaces with high centers and low edges. Therefore, the utility model can accurately control the surface shape according to the processing requirements, making the processing more convenient, avoiding the waste of time and resources caused by replacing the grinding disc back and forth due to processing requirements and irregular surface shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the three-dimensional structure of the polishing disc device provided in Example 1 of the utility model;

[0024] Figure 2 A schematic diagram of the front view of the polishing disc device provided in Example 1 of the utility model;

[0025] Figure 3 A schematic cross-sectional view of a polishing disc device provided in Example 1 of the utility model;

[0026] Figure 4 is a schematic diagram of the three-dimensional structure of the mounting frame;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the flange;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the grinding disc block;

[0029] Figure 7 It is a three-dimensional structural schematic diagram of the pull rod (shown by the snap ring);

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the pull rod (the retaining ring is not shown).

[0031] In the figure: 1. pull rod; 11. displacement scale; 12. step surface; 13. snap ring; 14. screw hole; 15. liquid through hole; 16. liquid inlet hole; 17. slot; 2. mounting bracket; 21. bracket arm; 22. threaded through hole; 23. first single hinge seat; 3. flange; 31. through hole; 32. receiving groove; 33. hinged arm; 34. second single hinge seat; 4. grinding disc block; 41. first double hinge seat; 42. second double hinge seat. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, but not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the utility model.

[0033] In the description of the present invention, it should be noted that the directions or positional relationships indicated by “upper” and the like are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience and simplification of the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as a limitation on the present invention.

[0034] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connect", "set", "install", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Embodiment 1:

[0037] like Figure 1-Figure 8 As shown, this embodiment provides a polishing grinding disc device, comprising:

[0038] The grinding disc is formed by a plurality of grinding disc blocks 4, and the plurality of grinding disc blocks 4 are distributed in a circle around the central axis of the grinding disc.

[0039] The mounting frame 2 is hinged to the outer ends of the plurality of grinding disc blocks 4.

[0040] Flange 3, flange 3 is hinged to the inner end of multiple grinding disc blocks 4,

[0041] The pull rod 1, the lower part of the pull rod 1 passes through the mounting frame 2 and is detachably connected to the flange 3, and can drive the flange 3 to move up and down relative to the mounting frame 2, thereby driving the inner ends of multiple grinding disc blocks 4 to move up to the grinding and polishing surface of the bottom surface of the grinding disc to form a concave surface, or driving the inner ends of multiple grinding disc blocks 4 to move down to the grinding and polishing surface of the bottom surface of the grinding disc to form a convex surface.

[0042] Thus, the flange 3 is driven to move up and down relative to the mounting frame 2 by the pull rod 1, so that the inner ends of the multiple grinding disc blocks 4 can be driven to move up to the grinding and polishing surface of the bottom surface of the grinding disc to form a concave surface. When working, the edge area of ​​the workpiece to be processed has a fast grinding rate, which is suitable for grinding surfaces with high edges and low centers; or the inner ends of the multiple grinding disc blocks 4 are driven to move down to the grinding and polishing surface of the bottom surface of the grinding disc to form a convex surface. When working, the center area of ​​the workpiece to be processed has a fast grinding rate, which is suitable for grinding surfaces with high centers and low edges. Therefore, the utility model can accurately control the surface shape according to the processing requirements, making the processing more convenient, avoiding the waste of time and resources caused by replacing the grinding disc back and forth due to processing requirements and irregular surface shapes.

[0043] In this embodiment, a displacement scale 11 is provided on the outer circumferential wall of the pull rod 1 , the middle portion of the pull rod 1 is threadedly connected to the mounting frame 2 , and the lower portion thereof is rotatably connected to the flange 3 .

[0044] Therefore, by observing the displacement scale 11 during the process of rotating the pull rod 1, on the zero scale line, the grinding disc is flat, below the zero scale, the grinding disc is convex, and above the zero scale, the grinding disc is concave, so that the shape of the grinding disc can be accurately controlled according to the scale.

[0045] In this embodiment, a through hole 31 is formed on the flange 3 to match the lower part of the pull rod 1. The lower part of the pull rod 1 passes through the through hole 31. The lower part of the pull rod 1 is provided with an upper limit portion and a lower limit portion, and the flange 3 is limited between the upper limit portion and the lower limit portion.

[0046] The lower part of the pull rod 1 is clearance-matched with the flange 3 , and the flange 3 is limited between the upper limit part and the lower limit part, so that the pull rod 1 and the flange 3 can be rotatably connected.

[0047] In this embodiment, the diameter of the lower portion of the pull rod 1 is smaller than that of the middle portion, and the step surface 12 between the lower portion and the middle portion of the pull rod 1 forms an upper limit portion.

[0048] In this embodiment, a clamping groove 17 is provided on the outer circumferential wall of the lower portion of the pull rod 1 , and a clamping ring 13 is provided in the clamping groove 17 , and the clamping ring 13 forms a lower limit portion.

[0049] In this embodiment, a receiving groove 32 is formed on the bottom surface of the flange 3 , and the lower portion of the pull rod 1 and the clamping ring 13 are placed in the receiving groove 32 .

[0050] In this embodiment, the grinding disc block 4 is a sector-shaped grinding disc block 4, and a plurality of sector-shaped grinding disc blocks 4 are assembled to form a disc-shaped grinding disc.

[0051] In other embodiments, the grinding disc block 4 is a triangular grinding disc block, and a plurality of triangular grinding disc blocks 4 are assembled to form a polygonal grinding disc.

[0052] In this embodiment, the bottom surface of the pull rod 1 is provided with a liquid hole 15 extending to the middle thereof, and the middle side wall is provided with a liquid inlet hole 16, which is connected with the liquid hole 15 to form a channel for the polishing liquid to enter the grinding disc.

[0053] Therefore, the polishing liquid can enter the center of the polishing grinding disc through the channel composed of the liquid inlet hole 16 and the liquid passage hole 15, and the polishing abrasive is evenly dispersed to the entire polishing surface as the polishing swings, which avoids local dripping at the edge and causing accumulation of polishing abrasive.

[0054] In this embodiment, in order to facilitate the rotation of the pull rod 1, a rotation hole 14 for cooperating with a rotation driving tool is opened on the top surface of the pull rod 1.

[0055] In this embodiment, the mounting frame 2 is provided with a plurality of outwardly extending support arms 21, and every two support arms 21 correspond to a grinding disc block 4, and the outer end of the grinding disc block 4 and its corresponding two support arms 21 are respectively hinged through a first hinge; the flange 3 is provided with a plurality of outwardly extending articulated arms 33, and the plurality of articulated arms 33 correspond one by one to the plurality of grinding disc blocks 4, and the articulated arms 33 are hinged to the inner ends of the corresponding grinding discs through a second hinge.

[0056] The first hinge includes a first single hinge seat 23 arranged on the lower end surface of the bracket arm 21, a first double hinge seat 41 arranged on the upper end of the grinding disc block 4, and a first hinge shaft 5 connecting the first single hinge seat 23 and the corresponding first double hinge seat 41 in series.

[0057] The second hinge includes a second single hinge seat 34 arranged at the end of the hinge arm 33, a second double hinge seat 42 arranged on the upper end surface of the grinding disc block 4, and a second hinge shaft 6 connecting the second single hinge seat 34 and the corresponding second double hinge seat 42 in series.

[0058] Specifically, the pull rod 1 includes an upper part, a middle part and a lower part, the top surface of the upper part is provided with a hexagonal threaded hole 14, the middle part is provided with an external thread, the diameter of the lower part is smaller than that of the middle part, so that a step surface 12 is formed between the lower part and the middle part, and a clamping groove 17 cooperating with the clamping ring 13 is provided on the outer circumferential wall of the lower part, wherein the bottom surface of the pull rod 1 is provided with a liquid hole 15 extending to the middle part, and the side wall of the middle part is provided with a liquid inlet hole 16 connected to the liquid hole 15, the polishing liquid can enter the center of the polishing grinding disc through the channel formed by the liquid inlet hole 16 and the liquid hole 15, and the polishing abrasive is evenly dispersed to the entire polishing surface with the polishing swing, which avoids local dripping at the edge and causes accumulation of polishing abrasive.

[0059] In this embodiment, eight first single hinge seats 23 are evenly and symmetrically distributed on the mounting frame 2, and each first single hinge seat 23 is provided with a pin hole. The grinding disc block 4 is triangular in shape, and there are four of them in total. The first double hinge seat 41 and the second double hinge seat 42 on each grinding disc block 4 have two pin holes. The pin hole on the first single hinge seat 23 and the two pin holes of the first double hinge seat 41 are connected through the first hinge shaft 5, and the pin hole of the second single hinge seat 34 of the flange 3 and the two pin holes of the second double hinge seat 42 are connected through the second hinge shaft 6. A total of four grinding disc blocks constitute the entire circular grinding disc. The threaded through hole 22 at the center of the mounting frame 2 has an internal thread that cooperates with the external thread in the middle of the pull rod 1. The central through hole 31 of the flange 3 cooperates with the lower part of the pull rod 1, and the bottom surface of the flange is provided with a receiving groove 32 for accommodating the lower part of the pull rod 1 and the retaining ring 13. The lower part of the pull rod 1 is passed through the threaded through hole 22 on the mounting frame 2 until the external thread in the middle is threadedly connected with the threaded through hole 22. Then, the pull rod 1 is rotated so that the lower part of the pull rod 1 passes through the through hole 31 of the flange 3 and enters the receiving groove 32. The retaining ring 13 is inserted from the receiving groove 32 into the retaining groove 17 at the lower part of the pull rod 1, so that the flange 3 is clamped between the above-mentioned step surface 12 and the retaining ring 13, and the pull rod 1 can rotate relative to the flange 3.

[0060] Therefore, by rotating the pull rod 1, the flange 3 can be driven to move slightly up and down, so as to accurately adjust and control the shape of the grinding wheel. On the zero scale line, the grinding wheel is flat, and below the zero scale, the grinding wheel is convex. When working, the grinding rate of the central area of ​​the workpiece to be processed is fast, which is suitable for grinding surfaces with high centers and low edges. Above the zero scale, the grinding wheel is concave. When working, the grinding rate of the edge area of ​​the workpiece to be processed is fast, which is suitable for grinding surfaces with high edges and low centers. The surface shape of the grinding wheel can be adjusted according to the specific conditions of the surface to be processed for targeted processing.

[0061] Compared with traditional grinding discs, this device has the following advantages:

[0062] 1. Dividing the traditional whole grinding disc into multiple grinding discs can accurately control the surface shape according to processing requirements, making processing more convenient and avoiding the waste of time and resources caused by replacing grinding discs back and forth due to processing requirements and irregular surface shapes.

[0063] 2. The polishing liquid is added from the center so that the abrasive can be dispersed to the processing surface during processing. The method of dripping the polishing liquid is optimized to avoid the accumulation of polishing abrasive at the edge, resulting in uneven grinding efficiency and uneven processing surface.

[0064] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A polishing disc device, characterized in that: include: The grinding disc is formed by splicing a plurality of grinding disc blocks (4), wherein the plurality of grinding disc blocks (4) are distributed in a circle around the central axis of the grinding disc. The mounting frame (2) is hingedly connected to the outer ends of the plurality of grinding disc blocks (4). The flange (3) is hinged to the inner ends of the plurality of grinding disc blocks (4). The pull rod (1) has a lower portion which passes through the mounting frame (2) and is detachably connected to the flange (3), and can drive the flange (3) to move up and down relative to the mounting frame (2), thereby driving the inner ends of the plurality of grinding disc blocks (4) to move upward to the grinding and polishing surface of the bottom surface of the grinding disc to form a concave surface, or driving the inner ends of the plurality of grinding disc blocks (4) to move downward to the grinding and polishing surface of the bottom surface of the grinding disc to form a convex surface.

2. The polishing disc device according to claim 1, characterized in that: A displacement scale (11) is provided on the outer circumferential wall of the pull rod (1). The middle portion of the pull rod (1) is threadedly connected to the mounting frame (2), and the lower portion is rotatably connected to the flange (3).

3. The polishing disc device according to claim 2, characterized in that: The flange (3) is provided with a through hole (31) that matches with the lower part of the pull rod (1); the lower part of the pull rod (1) passes through the through hole (31); the outer circumference of the pull rod (1) is provided with an upper limit portion and a lower limit portion; the flange (3) is limited between the upper limit portion and the lower limit portion.

4. The polishing disc device according to claim 3, characterized in that: The diameter of the lower part of the pull rod (1) is smaller than that of the middle part, and the step surface (12) between the lower part and the middle part of the pull rod (1) forms the upper limit portion.

5. The polishing disc device according to claim 4, characterized in that: A clamping groove (17) is provided on the outer circumferential wall of the lower part of the pull rod (1), a clamping ring (13) is provided in the clamping groove (17), and the clamping ring (13) forms the lower limit portion.

6. The polishing disc device according to claim 5, characterized in that: The bottom surface of the flange (3) is provided with a receiving groove (32), and the lower part of the pull rod (1) and the clamping ring (13) are placed in the receiving groove (32).

7. The polishing disc device according to any one of claims 1 to 6, characterized in that: The grinding disc block (4) is a fan-shaped grinding disc block (4), and a plurality of fan-shaped grinding disc blocks (4) are assembled to form a disc-shaped grinding disc; or the grinding disc block (4) is a triangular grinding disc block, and a plurality of triangular grinding disc blocks are assembled to form a polygonal grinding disc.

8. The polishing disc device according to any one of claims 1 to 5, characterized in that: The bottom surface of the pull rod (1) is provided with a liquid passage hole (15) extending to the middle thereof, and the side wall thereof is provided with a liquid inlet hole (16). The liquid inlet hole (16) is connected with the liquid passage hole (15) to form a channel for the polishing liquid to enter the grinding disc.

9. The polishing disc device according to any one of claims 1 to 5, characterized in that: The top surface of the pull rod (1) is provided with a rotary hole (14) which cooperates with a rotary driving tool.

10. The polishing disc device according to any one of claims 1 to 5, characterized in that: The mounting frame (2) is provided with a plurality of outwardly extending support arms (21), each two support arms (21) correspond to a grinding disc block (4), and the outer ends of the grinding disc blocks (4) are respectively hinged to the two corresponding support arms (21); the flange (3) is provided with a plurality of outwardly extending hinged arms (33), the plurality of hinged arms (33) correspond to the plurality of grinding disc blocks (4) one by one, and the hinged arms (33) are hinged to the inner ends of the corresponding grinding discs.

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