Dual-granularity whetstone and coring machine

Abstract

The utility model belongs to the technical field of lens processing, and discloses a dual-granularity whetstone and a coring machine. The double-granularity whetstone comprises a whetstone body, the whetstone body comprises a first cylindrical section and a second cylindrical section, the diameter of the first cylindrical section is larger than that of the second cylindrical section, and the first cylindrical section comprises a first peripheral face, a first chamfer facing one side of the second cylindrical section and a side face. The first chamfer face and the side face of the first chamfer are used for machining the depth face of the lens, and the second cylindrical section comprises a second peripheral face used for machining the outer circle face of the lens. The first chamfering face, the side face and the second peripheral face are each provided with a diamond plating layer, and the granularity of the diamond plating layer of the first chamfering face is smaller than that of the diamond plating layer of the side face. The middle side surface of the dual-granularity whetstone can be used for finely trimming the depth surface cut by the first chamfer surface so as to remove residual glass powder on the depth surface of the lens, so that the phenomenon that the lens becomes white after being coated with ink is avoided, and one-time processing and forming of the depth surface of the lens are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of lens processing, in particular to a double-grit grinding stone and a core cutting machine. Background Art

[0002] In optical production and processing, due to the increasing requirements for the quality of lenses, the corresponding requirements for the quality of lenses also increase. During the core cutting process of lenses, a grinding stone is required to cut the depth surface and the outer circumferential surface of the lens to obtain a lens with the required size, and the cut lens is inked. However, there will be residual glass powder on the lens after cutting, and the residual glass powder will cause the ink agent to fail to penetrate the depth surface of the lens, resulting in a phenomenon of white ink coating. In the prior art, after the lens is cut, the depth surface of the lens needs to be finely polished to remove the glass powder, and this processing procedure is cumbersome and not conducive to improving production efficiency. Content of the Utility Model

[0003] The purpose of the utility model is to provide a double-grit grinding stone and a core cutting machine, which can form a lens in one processing, avoid the phenomenon of white ink coating on the depth surface of the lens, and improve production efficiency.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The double-grit grinding stone includes a grinding stone body. The grinding stone body includes a first cylindrical section and a second cylindrical section that are coaxially aligned and connected to each other. The diameter of the first cylindrical section is larger than that of the second cylindrical section. The first cylindrical section includes a first chamfer and a side surface on the side facing the second cylindrical section. The first chamfer surface of the first chamfer and the side surface are used for processing the depth surface of the lens. The second cylindrical section includes a second outer circumferential surface for processing the outer circumferential surface of the lens. The first chamfer surface, the side surface, and the second outer circumferential surface are all provided with diamond coatings, and the grain size of the diamond coating on the first chamfer surface is smaller than the grain size of the diamond coating on the side surface.

[0006] As an optional solution, the dimension of the first chamfer in the direction perpendicular to the axis of the grinding stone body is set to 0.5 mm - 1 mm, and the included angle between the first chamfer surface and the side surface is set to 145° - 155°.

[0007] As an optional solution, the grain size of the diamond coatings on the first chamfer surface and the second outer circumferential surface is 400 grains per inch; the diamond grain size of the side surface is 800 grains per inch.

[0008] As an optional solution, the thickness of the diamond coating is 0.8 mm - 1.2 mm.

[0009] As an alternative, the second outer peripheral surface is provided with an annular groove having an inverted trapezoidal cross-section for machining the outer circular surface of the lens. The annular groove includes a groove bottom surface, and a second chamfer and a third chamfer disposed on both sides of the groove bottom surface along the axis direction of the grindstone body. The diamond coating is provided on the groove bottom surface, the second chamfer surface of the second chamfer, and the third chamfer surface of the third chamfer, and the third chamfer surface connects between the groove bottom surface and the side surface.

[0010] As an alternative, the dimensions of the second chamfer and the third chamfer in the direction perpendicular to the axis of the grindstone body are both set to 0.2 mm - 1 mm, and the angles between the second chamfer surface and the groove bottom surface and between the third chamfer surface and the groove bottom surface are both set to 135°.

[0011] As an alternative, the grindstone body is made of stainless steel.

[0012] As an alternative, the grindstone body is further provided with a through hole penetrating the first cylindrical section and the second cylindrical section, and a grindstone shaft on the core drilling machine can pass through the through hole to mount the grindstone body on the core drilling machine.

[0013] A core drilling machine, including the dual-grit grindstone described in any of the above solutions.

[0014] Advantages of the present utility model:

[0015] A dual-grit grindstone provided by the present utility model sets the grain size of the diamond coating on the first chamfer surface to be smaller than that of the diamond coating on the side surface, so that the first chamfer surface can perform cutting processing on the depth surface of the lens to remove the residual layer on the depth surface of the lens, and the side surface can further perform fine machining on the depth surface after being cut by the first chamfer surface to remove the glass powder remaining on the depth surface of the lens, avoiding the phenomenon of the lens turning white after ink coating, and realizing one-time processing and forming of the depth surface of the lens; in addition, the second outer peripheral surface can perform cutting processing on the outer circular surface of the lens, further realizing one-time processing and forming of the whole lens, and improving the processing efficiency. Description of the drawings

[0016] Figure 1 is a schematic structural diagram of the grindstone body involved in the embodiment of the present utility model;

[0017] Figure 2 is a partial cross-sectional view of the grindstone body involved in the embodiment of the present utility model;

[0018] Figure 3 is a schematic structural diagram of the grindstone body when machining the lens involved in the embodiment of the present utility model.

[0019] In the figure:

[0020] 100, Lens; 101, Outer circular surface; 102, Depth surface; 103, Curved surface;

[0021] 1, Grinding stone body; 11, First cylindrical section; 111, First outer peripheral surface; 112, First chamfered surface; 113, Side surface; 12, Second cylindrical section; 121, Second outer peripheral surface; 122, Ring groove; 1221, Groove bottom surface; 1222, Second chamfered surface; 1223, Third chamfered surface; 13, Shoulder; 14, Through hole. Detailed implementation manners

[0022] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar components or components with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium. It may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the description of the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "above", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "below", and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0025] The technical solutions of the present invention will be further described below with reference to the drawings and through specific implementation manners.

[0026] As Figures 1 - 3 shown, the embodiment of the present invention provides a double-grit grinding stone for processing a lens 100. The lens 100 includes an outer circular surface 101, a depth surface 102, and a curved surface 103. The curved surface 103 and the depth surface 102 are provided at both ends of the outer circular surface 101.

[0027] The double-grain grinding stone includes a grinding stone body 1. The grinding stone body 1 includes a first cylindrical section 11 and a second cylindrical section 12 that are coaxially aligned and connected to each other. The diameter of the first cylindrical section 11 is greater than that of the second cylindrical section 12. The first cylindrical section 11 includes a first outer peripheral surface 111, a first chamfer and a side surface 113 facing the second cylindrical section 12. The first chamfer is provided between the first outer peripheral surface 111 and the side surface 113. The first chamfer surface 112 of the first chamfer and the side surface 113 are used for machining the depth surface 102 of the lens 100. The second cylindrical section 12 includes a second outer peripheral surface 121 for machining the outer circular surface 101 of the lens 100.

[0028] In order to machine the lens 100, diamond coatings are provided on the first chamfer surface 112, the side surface 113 and the second outer peripheral surface 121, and the grain size of the diamond coating on the first chamfer surface 112 is smaller than that of the diamond coating on the side surface 113. It should be noted that the larger the grain size of the diamond coating, the higher the machining accuracy.

[0029] When the double-grain grinding stone is in use, the grinding stone body 1 rotates at a high speed, and the lens 100 rotates at a low speed and moves close to the grinding stone body 1. During the process of the lens 100 gradually approaching the grinding stone body 1, the first chamfer surface 112 first performs cutting machining on the depth surface 102 of the lens 100 to remove the residual layer on the depth surface 102 of the lens 100. When the lens 100 continues to move close to the grinding stone body 1, the side surface 113 performs fine machining on the depth surface 102 cut by the first chamfer surface 112 to remove the residual glass powder on the depth surface 102 of the lens 100, avoiding the phenomenon of the lens 100 turning white after ink coating, and realizing one-time machining and forming of the depth surface 102 of the lens 100; in addition, when the outer circular surface 101 of the lens 100 contacts the second outer peripheral surface 121, the second outer peripheral surface 121 can perform cutting machining on the outer circular surface 101 of the lens 100, further realizing one-time machining and forming of the whole lens 100 and improving the machining efficiency.

[0030] Specifically, the grain size of the diamond coatings on the first chamfer surface 112 and the second outer peripheral surface 121 is 400 grains per inch (there are 400 diamond abrasives per inch of length, that is, 400# diamond coating). The first chamfer surface 112 is used to remove the glass residual layer on the depth surface 102 of the lens 100, and the second outer peripheral surface 121 is used to remove the glass residual layer on the outer circular surface 101 of the lens 100. It should be noted that the outer circular surface 101 of the lens 100 does not need to be finely machined; the diamond coating on the side surface 113 of the first cylindrical section 11 is 800 grains per inch (there are 800 diamond abrasives per inch of length, that is, 800# diamond coating), and the side surface 113 of the first cylindrical section 11 is used to perform fine machining on the depth surface 102 of the lens 100 to remove the residual glass powder.

[0031] Further, the thickness of the diamond coating is 0.8 mm - 1.2 mm to ensure the service life and the processing effect of the lens 100.

[0032] Optionally, as Figure 2 shown, the dimension h of the first chamfer along the axis direction perpendicular to the grinding stone body 1 is 0.5 mm - 1 mm, and the included angle a between the first chamfer surface 112 and the side surface 113 is 145° - 155°. Setting the dimension of the first chamfer within the above range makes the processing of the lens 100 convenient and the design structure reasonable.

[0033] In this embodiment, h is 0.7 mm and a is 150°, so that the structural design is more reasonable and has a better cutting effect on the depth surface 102 of the lens 100.

[0034] Optionally, a ring groove 122 with an inverted trapezoidal cross-section for machining the outer circular surface 101 of the lens 100 is provided on the second outer peripheral surface 121 of the second cylindrical section 12. The ring groove 122 includes a groove bottom surface 1221 and second and third chamfers arranged on both sides of the groove bottom surface 1221 along the axis direction of the grinding stone body 1. The groove bottom surface 1221, the second chamfer surface 1222 of the second chamfer, and the third chamfer surface 1223 of the third chamfer are all provided with diamond coatings, and the third chamfer surface 1223 is connected between the groove bottom surface 1221 and the side surface 113 of the first cylindrical section 11. With this structural design, the ring groove 122 can be designed according to the structure of the outer circular surface 101 of the lens 100 to realize machining a lens 100 with a chamfer in one time, and the processing efficiency is higher.

[0035] Specifically, the dimension e of the second chamfer along the axis direction perpendicular to the axis of the grinding stone body 1 and the dimension f of the third chamfer along the axis direction perpendicular to the axis of the grinding stone body 1 are both set to 0.2 mm - 1 mm, and the included angle b between the second chamfer surface 1222 and the groove bottom surface 1221 and the included angle c between the third chamfer surface 1223 and the groove bottom surface 1221 are both set to 135°. In this embodiment, both e and f are 0.3 mm.

[0036] Optionally, the grinding stone body 1 is made of a stainless steel part, and the diamond coating can be electroplated on the grinding stone body 1. The processing technology is simple, the manufacturing is convenient, and the service life is long; and the stainless steel part can effectively prevent rust. In this embodiment, the grinding stone body 1 can be selected as 304 stainless steel.

[0037] An embodiment of the present utility model further provides a core drill, which includes a main body, a grinding wheel shaft, a fixture shaft, and the above-mentioned double-grit grinding wheel. The grinding wheel shaft and the fixture shaft are both arranged on the main body. The grinding wheel body 1 is further provided with a through hole 14 that penetrates the first cylindrical section 11 and the second cylindrical section 12 along the grinding wheel body 1. The grinding wheel shaft can pass through the through hole 14. The main body can drive the grinding wheel shaft to rotate at a high speed of 4000 revolutions per minute to drive the grinding wheel body 1 to rotate at a high speed. The lens 100 is arranged on the fixture shaft. The main body can drive the fixture shaft to rotate at a low speed of 30 revolutions per minute to drive the lens 100 to rotate at a low speed, and can also drive the fixture shaft to drive the lens 100 to move closer to the grinding wheel body 1 to realize the processing of the lens 100 by the grinding wheel body 1, so that the lens 100 can be formed in one time, improving the processing efficiency.

[0038] In order to make the installation of the grinding wheel body 1 more convenient, both end faces of the grinding wheel body 1 along its axial direction are further provided with shoulders 13 respectively connected to the first cylindrical section 11 and the second cylindrical section 12, so that the grinding wheel body 1 is more firmly installed on the grinding wheel shaft and the installation is more convenient.

[0039] Obviously, the above embodiments of the present utility model are only examples for clearly explaining the present utility model, and are not limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A double-grained grinding stone, characterized in that, It includes a grinding stone body (1), and the grinding stone body (1) includes a first cylindrical section (11) and a second cylindrical section (12) with coincident axes and connected to each other. The diameter of the first cylindrical section (11) is greater than that of the second cylindrical section (12). The first cylindrical section (11) includes a first chamfer and a side surface (113) on one side facing the second cylindrical section (12). The first chamfer surface (112) of the first chamfer and the side surface (113) are used for machining the depth surface (102) of the lens (100). The second cylindrical section (12) includes a second outer peripheral surface (121) for machining the outer circular surface (101) of the lens (100). The first chamfer surface (112), the side surface (113) and the second outer peripheral surface (121) are all provided with diamond coatings, and the particle size of the diamond coating on the first chamfer surface (112) is smaller than the particle size of the diamond coating on the side surface (113).

2. The double-grain grinding stone according to claim 1, wherein, The dimension of the first chamfer in the direction perpendicular to the axis of the grinding stone body (1) is set to be 0.5 mm - 1 mm, and the included angle between the first chamfer surface (112) and the side surface (113) is set to be 145° - 155°.

3. The double-grained grinding stone according to claim 1, wherein The particle size of the diamond coatings on the first chamfer surface (112) and the second outer peripheral surface (121) is 400 grains per inch; the particle size of the diamond coating on the side surface (113) is 800 grains per inch.

4. The double-grained grindstone according to claim 1, characterized in that, The thickness of the diamond coating is 0.8 mm - 1.2 mm.

5. The double-grain grindstone according to claim 1, characterized in that, The second outer peripheral surface (121) is provided with an annular groove (122) with a trapezoidal cross-section for machining the outer circular surface (101) of the lens (100). The annular groove (122) includes a groove bottom surface (1221) and a second chamfer and a third chamfer arranged on both sides of the groove bottom surface (1221) along the axis direction of the grinding stone body (1). The groove bottom surface (1221), the second chamfer surface (1222) of the second chamfer and the third chamfer surface (1223) of the third chamfer are all provided with the diamond coating, and the third chamfer surface (1223) connects between the groove bottom surface (1221) and the side surface (113).

6. The double-grain grindstone according to claim 5, wherein, The dimensions of the second chamfer and the third chamfer in the direction perpendicular to the axis of the grinding stone body (1) are both set to be 0.2 mm - 1 mm, and the included angles between the second chamfer surface (1222) and the groove bottom surface (1221) and between the third chamfer surface (1223) and the groove bottom surface (1221) are both set to be 135°.

7. The double-grain grindstone according to claim 1, wherein The grinding stone body (1) is made of stainless steel.

8. The double-grained grinding stone according to claim 1, wherein The grinding stone body (1) is further provided with a through hole (14) penetrating the first cylindrical section (11) and the second cylindrical section (12). A grinding stone shaft on the core drilling machine can pass through the through hole (14) to mount the grinding stone body (1) on the core drilling machine.

9. Core extraction machine, characterized in that, It includes the double-grain-size grinding stone according to any one of claims 1 - 8.

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