Polishing equipment

Abstract

The utility model belongs to the technical field of optical lens machining equipment, and particularly relates to polishing equipment which comprises a polishing disc, a machine tool fixing piece, a grinding disc and a polishing ring, the polishing disc is rotationally connected to a machine tool, and the fixing piece is fixedly connected to the machine tool; the multiple grinding discs are connected to the fixing piece, and one face of each grinding disc makes contact with the polishing disc. The multiple polishing rings and the grinding discs are arranged in a one-to-one correspondence mode, the polishing rings are arranged outside the grinding discs in a sleeving mode, and polishing gaps exist between the polishing rings and the grinding discs. The multiple grinding discs are pressed and limited on the polishing disc through the fixing pieces, multiple workpieces are ground and polished at the same time, and the production efficiency and the equipment utilization rate are improved; the polishing ring is arranged to enlarge recesses caused by workpiece grinding on the polishing disc, the situation that the edges of the workpieces collide with the side walls of the recesses and are broken is reduced, and the yield of the workpieces is improved.

Description

Technical Field

[0001] The utility model belongs to the field of lens processing equipment, in particular to a lens grinding and polishing equipment, specifically to a polishing equipment. Background Art

[0002] The demand for optical lenses in the optical imaging, laser, detection, and security markets is increasing, and the requirements for the processing efficiency and surface accuracy of optical lenses are getting higher and higher. Grinding and polishing are the key processes in lens processing, and the structural design of the equipment determines the efficiency and surface accuracy of grinding and polishing lenses.

[0003] refer to Figure 1 The existing pneumatic precision grinding and polishing machine uses pneumatic control to grind and polish lenses. This equipment has the following problems during use: on the one hand, in order to ensure the processing efficiency of the equipment, one end of the horizontal rod is usually fixed by the fixing device of the grinding equipment itself, and a single rod can only pressurize a single grinding disk, and cannot accommodate more grinding disks. The space utilization rate of the polishing disk is low, resulting in low production efficiency; on the other hand, the grinding equipment itself will also wear when the lens is polished. As the working time of the grinding equipment increases, the grinding area on the grinding equipment will be concave to form a depression. When the lens is located in the grinding area for grinding, the edge area of ​​the lens collides with the side wall of the concave area under the action of centrifugal force, which can easily cause damage to the edge of the lens and affect the qualified rate of the lens. Utility Model Content

[0004] Aiming at the defects and shortcomings of the prior art, the utility model provides a polishing device.

[0005] A polishing device comprises a polishing disc and a machine tool, wherein the polishing disc is rotatably connected to the machine tool; further comprising a fixing part, a grinding disc and a polishing ring, wherein the fixing part is fixedly connected to the machine tool; a plurality of grinding discs are provided, wherein the plurality of grinding discs are connected to the fixing part, and one side of the grinding disc is in contact with the polishing disc; a plurality of polishing rings are provided corresponding to the grinding discs, wherein the polishing rings are sleeved outside the grinding discs, and a polishing gap exists between the polishing rings and the grinding discs.

[0006] Optionally, the fixing member includes a first rod, a second rod and a pressure limit rod, the first rod is fixedly connected to the machine tool and is located above the grinding disc; the second rod is fixedly connected to the first rod; the pressure limit rod is arranged in a vertical direction and installed on the second rod, the pressure limit rod and the grinding disc are arranged one by one, and the grinding disc is installed at the bottom end of the pressure limit rod.

[0007] Optionally, the grinding disc and the polishing disc can rotate relative to each other.

[0008] Optionally, the upper surface of the grinding disc is provided with a first limiting hole adapted to the bottom end of the pressure limiting rod, the bottom end of the pressure limiting rod is inserted into the first limiting hole, and the top end of the pressure limiting rod is fixedly connected to the second rod.

[0009] Optionally, the first limiting hole is spherical or conical.

[0010] Optionally, the second rod is provided with a second limiting hole adapted to the upper end of the pressurizing limiting rod, the top end of the pressurizing limiting rod is inserted into the second limiting hole, and the bottom end of the pressurizing limiting rod is fixedly connected to the grinding disc.

[0011] Optionally, the second limiting hole is spherical cap-shaped or conical-shaped.

[0012] Optionally, the distances from the axes of the multiple grinding discs to the axis of the polishing disc are the same.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) By setting a fixing member, multiple grinding discs are pressed and confined on the polishing disc, and multiple workpieces can be ground and polished at the same time, thereby improving production efficiency and equipment utilization.

[0015] (2) By setting the polishing ring and the polishing gap, during the rotation of the polishing disk, due to the centrifugal force and friction, the polishing ring acts on the polishing disk, thereby enlarging the depression on the polishing disk caused by grinding the workpiece, reducing the possibility of the workpiece edge hitting the side wall of the depression and breaking, and improving the yield of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0017] Figure 1 It is a structural schematic diagram of the prior art;

[0018] Figure 2 It is a structural schematic diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the first limiting hole of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the second limiting hole of the utility model;

[0021] Figure 5 This is a schematic diagram of the utility model in which the first rod does not pass through the center of the grinding disc;

[0022] Figure 6 This is a schematic diagram of the first rod of the utility model passing through the center of the grinding disc;

[0023] Figure 7 It is a schematic diagram of two first rods and two second rods of the utility model that are coaxial and connected to each other;

[0024] Figure 8 It is a schematic diagram of two first rods of the utility model that are coaxial and connected to each other.

[0025] In the figure: 1, grinding disc; 2, polishing ring; 3, pressure limiting rod; 4, first rod; 5, second rod; 6, first limiting hole; 7, second limiting hole; 8, polishing disc. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, they will be described in detail below in conjunction with specific examples, but the protection scope of the present invention is not limited to the following specific embodiments.

[0027] Unless otherwise defined, all professional terms used below have the same meaning as those generally understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present utility model.

[0028] Example 1

[0029] A polishing device, referring to Figure 2 , including a polishing disc 8 and a machine tool. The polishing disc 8 is rotatably connected to the machine tool. The machine tool is provided with a rotation drive for driving the polishing disc 8 to rotate. In this embodiment, the rotation drive is a motor. In other embodiments, the rotation drive may also include a driving structure commonly used in the prior art such as an acceleration gear.

[0030] Reference Figure 2 and Figure 3 The polishing equipment also includes a fixing part, a polishing ring 2 and a grinding disc 1. The fixing part includes a first rod, a plurality of second rods and a plurality of pressure-limiting rods 3. The first rod is fixedly connected to the machine tool, and the plurality of second rods are fixedly connected to the first rod. The pressure-limiting rod 3 is arranged in the vertical direction, the grinding disc 1 and the bottom end of the pressure-limiting rod 3 are connected, the pressure-limiting rod 3 and the grinding disc 1 correspond one to one, and the pressure-limiting rod 3 applies pressure to the grinding disc 1 so that the bottom surface of the grinding disc 1 contacts the surface of the polishing disc 8. The upper surface of the grinding disc 1 is provided with a first limiting hole 6 adapted to the bottom end of the pressure-limiting rod 3, the bottom end of the pressure-limiting rod 3 is inserted into the first limiting hole 6, and the top end of the pressure-limiting rod 3 is fixedly connected to the second rod. In the present embodiment, the first limiting hole 6 is arranged in a spherical crown shape; in other embodiments, the first limiting hole 6 may be arranged in a conical shape. When the polishing disc 8 rotates, the grinding disc 1 may also rotate under the action of friction force, and the polishing disc 8 and the grinding disc 1 rotate relatively, and the upper and lower surfaces of the workpiece are polished at the same time.

[0031] In this embodiment, two grinding discs 1 are provided, one second rod is provided, and two pressure-limiting rods 3 are provided. One pressure-limiting rod 3 is connected to the end of the first rod away from the machine tool, and the other pressure-limiting rod 3 is connected to the end of the second rod away from the first rod. The distance from the connection point between the second rod and the first rod to the end of the first rod away from the machine tool is equal to the length of the second rod, so that the distance from the axis of the two grinding discs 1 to the axis of the polishing disc 8 is equal. Since the polishing disc 8 rotates with its axis as the center, under the action of centrifugal force, the processing efficiency of the polishing disc 8 increases from the center point of the polishing disc 8 outward in sequence, and the distances from multiple grinding discs 1 to the center point of the polishing disc 8 are the same, ensuring that the stress and wear conditions of each grinding disc 1 are consistent, avoiding the situation where some workpieces are over-processed or some workpieces are not processed in place.

[0032] In practical applications, the number of grinding discs 1 can be adjusted according to demand. The second rod and the first rod can be fixed by fixing screws. When the number of grinding discs 1 is increased, the number of second rods is increased accordingly, and when the number of grinding discs 1 is reduced, the number of second rods is reduced accordingly. The fixing screws are provided to facilitate the disassembly and assembly of the second rod according to demand.

[0033] There are multiple polishing rings 2, and the polishing rings 2 and the grinding discs 1 are arranged in a one-to-one correspondence. In this embodiment, there are also two polishing rings 2, and the two polishing rings 2 are respectively sleeved on the two grinding discs 1, and there is a polishing gap between the polishing rings 2 and the grinding discs 1. While the polishing disc 8 is grinding the workpiece, the polishing disc 8 itself will also wear. As the working time of the polishing disc 8 increases, the grinding area on the polishing disc 8 will be concave to form a recessed area. When the workpiece is located in the grinding area for grinding, the edge area of ​​the workpiece collides with the side wall of the recessed area under the action of centrifugal force, which can easily cause damage to the edge of the workpiece. By providing the polishing ring 2, when the polishing disc 8 is grinding the workpiece, the contact area between the polishing ring 2 and the polishing disc 8 will also wear, expanding the area of ​​the recessed area, reducing the possibility of the workpiece and the side wall of the recessed area colliding, avoiding damage to the edge of the workpiece, and improving the yield rate.

[0034] When the polishing equipment is working, the workpiece is placed on the polishing disc 8, the grinding disc 1 is used to abut the workpiece, the workpiece is limited, the workpiece is placed away from the polishing disc 8 during grinding, and then the driving structure is started to drive the polishing disc 8 to rotate to achieve grinding of the workpiece. When the polishing disc 8 rotates, because the grinding disc 1 and the pressure limiting rod 3 are connected through the first limiting hole 6, the grinding disc 1 can also rotate under the action of friction to grind the upper surface of the workpiece. The polishing ring 2 rotates under the action of friction and centrifugal force, wears the polishing disc 8, avoids damage to the edge of the workpiece, and improves the yield rate.

[0035] Example 2

[0036] The difference from Example 1 is that, referring to Figure 4A second limiting hole 7 is provided on the second rod 5 , one end of the pressurizing limiting rod 3 is inserted into the second limiting hole 7 , and the other end of the pressurizing limiting rod 3 is fixedly connected to the grinding disc 1 .

[0037] The pressure limit rod 3 is coaxially arranged with the grinding disc 1. After the pressure limit rod 3 is inserted into the second limit hole 7, on the one hand, the position of the grinding disc 1 on the polishing disc 8 can be limited by the cooperation between the side wall of the second limit hole 7 and the side wall of the pressure limit rod 3. On the other hand, the grinding disc 1 can also be squeezed downward by the pressure limit rod 3 to ensure that the workpiece to be processed is in close contact with the polishing disc 8.

[0038] The second limiting hole 7 and the pressure limiting rod 3 The end of the second limiting hole 7 inserted into the pressure limiting rod 3 is spherical or conical, which on the one hand increases the contact area between the second limiting hole 7 and the pressure limiting rod 3, and on the other hand can decompose the action force and reaction force through the spherical surface or the inclined surface, so that the force is more uniform.

[0039] The pressure limiting rod 3 and the grinding disc 1 can be fixed by welding or bolting.

[0040] The advantages of the connection between the second rod and the pressure limit rod in Example 1 and Example 2 are: first, it limits the position of the grinding disc 1 on the polishing disc 8; second, it ensures that the workpiece can fit tightly against the polishing disc 8; third, it does not affect the rotation of the grinding disc 1 during processing.

[0041] Example 3

[0042] The arrangement of the first rod 4 and the second connecting rod 5 will be described in detail.

[0043] In order to ensure the same processing efficiency, the grinding discs 1 to be processed need to be arranged on the polishing disc 8 along the same circumferential direction. Figure 5-8 , take the example of setting two second rods 5 on the first rod 4. When the axis of the first rod 4 passes through the center of the polishing plate 8, refer to Figure 6 , the two second rods 5 are symmetrically arranged on both sides of the first rod 4. When the axis of the first rod 4 does not pass through the center of the polishing disc 8, Figure 5 It shows the situation where the connection positions of the two second rods 5 and the first rod 4 are the same; Figure 5 It also shows the situation where the two second rods 5 are connected to the first rod 4 at different positions.

[0044] It should be noted that, when more grinding discs 1 can be coaxially arranged on the polishing disc 8 , three or more second rods 5 can also be arranged on the same first rod 4 .

[0045] It should be noted that Figure 7 A special case is shown in FIG. 1 , that is, two first rods 4 and two second rods 5 are coaxial, and the two coaxial second rods 5 are fixedly connected.

[0046] It should be noted that Figure 8 A special case is shown in FIG. 1 , that is, two first rods 4 are coaxial and fixedly connected.

[0047] It should be noted that Figure 2 A special case is shown in FIG. 4 , where a second rod 5 is coaxial with the first rod 4 .

[0048] The above embodiments are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope of the present invention according to the technical solution and concept of the present invention, which should be included in the protection scope of the present invention.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

Claims

1. A polishing device, comprising a polishing disc (8) and a machine tool, wherein the polishing disc (8) is rotatably connected to the machine tool; characterized in that: It also comprises a fixing part, a grinding disc (1) and a polishing ring (2), wherein the fixing part is fixedly connected to the machine tool; a plurality of grinding discs (1) are provided, each of the plurality of grinding discs (1) is connected to the fixing part, and one side of the grinding disc (1) is in contact with the polishing disc (8); a plurality of polishing rings (2) are provided in a one-to-one correspondence with the grinding disc (1), the polishing ring (2) is sleeved outside the grinding disc (1), and a polishing gap exists between the polishing ring (2) and the grinding disc (1).

2. The polishing device according to claim 1, characterized in that: The fixing member comprises a first rod, a second rod and a pressure limiting rod (3); the first rod is fixedly connected to the machine tool and is located above the grinding disc (1); the second rod is fixedly connected to the first rod; the pressure limiting rod (3) is arranged in a vertical direction and is installed on the second rod; the pressure limiting rod (3) and the grinding disc (1) are arranged in a one-to-one correspondence; the grinding disc (1) is installed at the bottom end of the pressure limiting rod (3).

3. The polishing device according to claim 1, characterized in that: The grinding disc (1) and the polishing disc (8) can rotate relative to each other.

4. The polishing device according to any one of claims 1 to 3, characterized in that: The upper surface of the grinding disc (1) is provided with a first limiting hole (6) adapted to the bottom end of the pressurized limiting rod (3); the bottom end of the pressurized limiting rod (3) is inserted into the first limiting hole (6); and the top end of the pressurized limiting rod (3) is fixedly connected to the second rod.

5. The polishing device according to claim 4, characterized in that: The first limiting hole (6) is in a spherical crown shape or a conical shape.

6. The polishing device according to claim 2, characterized in that: The second rod is provided with a second limiting hole (7) adapted to the upper end of the pressurizing limiting rod (3); the top end of the pressurizing limiting rod (3) is inserted into the second limiting hole (7); and the bottom end of the pressurizing limiting rod (3) is fixedly connected to the grinding disc (1).

7. The polishing device according to claim 6, characterized in that: The second limiting hole (7) is in a spherical crown shape or a conical shape.

8. The polishing device according to claim 1, characterized in that: The distances between the axis centers of the plurality of grinding discs (1) and the axis center of the polishing disc (8) are the same.

Images