Automatic chamfering device for irregular glass lens
By combining the support roller and the high-precision displacement sensor, the tool height is adjusted in real time, which solves the problem of uneven chamfering depth of irregular lenses, achieves symmetry of chamfering and high-precision cutting of lenses, and expands the applicability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DANYANG JIAYI AUTOMATION EQUIP CO LTD
- Filing Date
- 2025-04-03
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional chamfering devices cannot identify thickness differences during the rotation of irregular glass lenses in real time, resulting in uneven chamfering depth. Furthermore, contact probe detection is prone to scratching the lens surface and cannot achieve dynamic Z-axis compensation, affecting lens strength and cutting accuracy.
The system employs a support roller and a high-precision displacement sensor to work together to detect changes in lens edge thickness in real time, generate dynamic Z-axis compensation commands, adjust the tool height through a multi-axis moving mechanism to ensure that the chamfer depth matches the symmetrical contour of the lens, and prevents scratches through an elastic buffer layer.
It achieves a high degree of consistency and symmetry in the chamfering of irregular lenses, reduces the risk of edge chipping, improves the adaptability of lens cutting and the applicability of equipment, and avoids scratches on the lens surface.
Smart Images
Figure CN224145037U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lens processing technology, and in particular to an automatic chamfering device for irregular glass lenses. Background Technology
[0002] Irregular glass lenses (such as convex round lenses) are widely used in optical eyeglasses and precision equipment. They are characterized by a symmetrical convex-concave structure on the lens surface, meaning that the degree of convexity or concavity differs between the inside and outside, but the overall distribution is symmetrical about the center. For aesthetic or fit purposes, the edges of such round lenses need to be chamfered. The chamfered lens must retain a symmetrical outline. However, since the thickness of the edge of irregular lenses fluctuates with the curvature of the surface (for example, the middle is concave and the two sides are thick, and the edge of the concave area is thick), the traditional chamfering process has the following technical bottlenecks.
[0003] Existing chamfering devices mostly use fixed cutters or single height sensors, which cannot identify the thickness difference of symmetrical edges (i.e., the height difference between the chamfered surface and the opposite convex surface) in real time during lens rotation. For example, when the support table drives the lens to rotate, the edge height difference between the convex and concave areas can reach several millimeters. If the cutter height is fixed, it will lead to uneven chamfering depth, or even local overcutting or undercutting, affecting the subsequent cutting accuracy and lens strength. Secondly, existing technologies attempt to detect lens edges using contact probes when facing such problems, but the rigid contact of the probes is prone to scratching the lens surface, and the response speed is lagging, making it impossible to achieve dynamic Z-axis compensation, resulting in low matching degree between the chamfered surface and the symmetrical contour of the lens. To solve the above problems, we propose an automatic chamfering device for irregular glass lenses. Through the synergistic action of the support roller and displacement sensor, the height change of the opposite side of the chamfered surface is simultaneously sensed during lens rotation, and dynamic compensation commands are generated, so that the cutter always accurately tracks the thickness difference of the symmetrical contour, fundamentally solving the technical problem of uneven chamfering height for irregular lenses. Utility Model Content
[0004] The purpose of this invention is to provide an automatic chamfering device for irregular glass lenses, so as to solve the problems of poor chamfering height consistency and insufficient dynamic compensation capability of traditional glass lens chamfering devices.
[0005] To solve the above-mentioned technical problems, this utility model provides an automatic chamfering device for irregular glass lenses, including a mounting base, with the lens to be chamfered centrally positioned on the upper surface of a support platform at the top of the mounting base. The support platform is driven by a rotary motor to rotate, and a roller sensing component is provided on one side of the support platform.
[0006] The downward-pressing fixing rod is driven by a vertical cylinder to flexibly fix the lens with an elastic pressure head.
[0007] The robotic arm includes a machining tool, a multi-axis movement mechanism for adjusting the position of the robotic arm, and an angle adjustment mechanism for adjusting the angle of the machining tool.
[0008] The roller sensing component is located on the opposite side of the contact surface between the lens and the processing tool. It includes a support roller that can roll with the lens and a sensor. The sensor can convert the sensing data into a height deviation value, generate a Z-axis compensation command for the robotic arm based on the height deviation value, and drive the robotic arm to adjust its vertical position through a multi-axis moving mechanism.
[0009] Preferably, the surface of the support roller is covered with an elastic buffer layer.
[0010] Preferably, the roller sensing assembly further includes a floating bracket, which is connected to the mounting base via a linear slide rail and is equipped with a return spring inside to ensure that the support roller is always in close contact with the edge of the lens.
[0011] Preferably, the sensor is a high-precision displacement sensor, which is rigidly connected to the end of the floating support.
[0012] Preferably, the Z-axis travel of the floating support is ±5mm, and the displacement accuracy is ≤0.01mm.
[0013] Preferably, the multi-axis moving mechanism includes X / Y / Z three-axis linear movement control, all driven by cylinders.
[0014] Preferably, the angle adjustment mechanism includes a telescopic rod disposed on one side of the machining tool and a self-adjusting rotating shaft.
[0015] Preferably, the support platform includes an elastic support pad disposed on its surface, the elastic support pad being centrally located in a ring shape.
[0016] Compared with the prior art, the automatic chamfering device for irregular glass lenses of this utility model has the following advantages:
[0017] 1. Through the innovative design of the roller sensing component, the height deviation of the opposite side is detected in real time during the lens chamfering process. Combined with the dynamic feedback of the high-precision displacement sensor and the floating bracket, the Z-axis compensation command can be generated synchronously to drive the robotic arm to precisely adjust the tool height, thereby ensuring that the chamfering depth strictly matches the symmetrical contour of the lens. This mechanism effectively solves the problem of uneven chamfering height caused by the difference between the inner and outer convexity of irregular lenses, significantly reduces the risk of edge chipping, and improves the adaptability of subsequent frame cutting.
[0018] 2. By using an elastic buffer layer supporting the roller surface and a linear slide rail structure with a floating bracket, the device can flexibly conform to the curvature changes of the lens edge. While avoiding scratching the surface, it can adapt to irregular lenses of different sizes and shapes, greatly expanding the applicability of the equipment. In addition, the coordinated control of the multi-axis movement mechanism and the angle adjustment mechanism realizes the flexible positioning and dynamic adjustment of the tool in the X / Y / Z three-axis directions, which can accurately adapt to the chamfering requirements of complex contours and overcome the problem of poor adaptability of traditional fixed tools to the processing of irregular lenses. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of an automatic chamfering device for irregular glass lenses provided by this utility model;
[0020] Figure 2 This utility model provides an automatic chamfering device for irregular glass lenses. Figure 1 A magnified view of a section at point A in the middle;
[0021] Figure 3 This is a schematic diagram of the mounting base in an automatic chamfering device for irregular glass lenses provided by this utility model;
[0022] Figure 4 This is a schematic diagram of the structure of an automatic chamfering device for irregular glass lenses provided by this utility model when the processing tool is in the edge planing state;
[0023] In the diagram: 1. Mounting base; 2. Pressing rod; 3. Robotic arm; 101. Support platform; 102. Rotary motor; 103. Roller sensing assembly; 201. Vertical cylinder; 202. Elastic pressure head; 301. Machining tool; 302. Multi-axis moving mechanism; 303. Angle adjustment mechanism; 103a. Support roller; 103b. Sensor; 103c. Floating bracket; 103d. Linear slide rail; 101a. Elastic support pad; 303a. Telescopic rod; 303b. Self-adjusting rotating shaft; 304. Cylinder. Detailed Implementation
[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.
[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example
[0027] This utility model provides an automatic chamfering device for irregular glass lenses. Please refer to [link / reference]. Figures 1-4 The system includes a mounting base 1, with the lens to be chamfered positioned centrally on the upper surface of a support platform 101 at the top of the mounting base 1. The support platform 101 is driven to rotate by a rotary motor 102, and a roller sensing component 103 is provided on one side of the support platform 101. A pressing and fixing rod 2 is driven by a vertical cylinder 201 to flexibly fix the lens using an elastic pressing head 202. A robotic arm 3 includes a processing tool 301, a multi-axis moving mechanism 302 for adjusting the position of the robotic arm 3, and an angle adjusting mechanism 303 for adjusting the angle of the processing tool 301. The roller sensing component 103 is located on the opposite side of the contact surface between the lens and the processing tool 301. It includes a support roller 103a that can roll with the lens and a sensor 103b. The sensor 103b can convert the sensing data into a height deviation value, generate a Z-axis compensation command for the robotic arm 3 based on the height deviation value, and drive the robotic arm 3 to adjust its vertical position through the multi-axis moving mechanism 302.
[0028] The surface of the support roller 103a is covered with an elastic buffer layer; the roller sensing assembly 103 also includes a floating bracket 103c, which is connected to the mounting base 1 via a linear slide rail 103d and is equipped with a return spring inside to keep the support roller 103a always in close contact with the edge of the lens; the sensor 103b is a high-precision displacement sensor and is rigidly connected to the end of the floating bracket 103c; the Z-axis travel of the floating bracket 103c is ±5mm, and the displacement accuracy is ≤0.01mm; the multi-axis moving mechanism 302 includes X / Y / Z three-axis linear movement control, all driven by cylinders 304; the angle adjustment mechanism 303 includes a telescopic rod 303a disposed on one side of the machining tool 301 and a self-adjusting rotating shaft 303b; the support platform 101 includes an elastic support pad 101a disposed on its surface, which is centrally located in a ring shape.
[0029] It should be noted that the support platform 101 is centrally located on the top of the mounting base 1. The support platform 101 has a double-layer structure, with a stainless steel turntable at the bottom and a silicone elastic support pad 101a on the surface. The silicone pad can prevent the lens surface from being scratched during high-speed rotation. The rotary motor 102 is coaxially connected to the turntable of the support platform 101 through a speed controller.
[0030] Preferably, the pressing and fixing rod 2 is driven by the vertical cylinder 201, and the elastic pressing head 202 is fixedly installed at the end of the cylinder rod. The contact surface of the pressing head is made of elastic silicone material, and the center of the pressing head is aligned with the geometric center of the lens.
[0031] Preferably, the roller sensing assembly 103 includes a support roller 103a, a floating bracket 103c, and a displacement sensor 103b. The surface of the support roller 103a is covered with a 0.5mm fluororubber layer for elastic cushioning. The floating bracket 103c is fixed to the support roller 103a. The displacement of the support roller 103a is transmitted to the displacement sensor 103b through the floating bracket 103c. The position of the floating bracket 103c is restricted by the linear slide rail 103d, allowing it to only perform Z-axis lifting and lowering movements. The linear slide rail 103d contains a return spring to keep the support roller 103a always close to the edge of the lens. The preload of the return spring is 10-30N. The support roller 103a rotates and rolls with the lens. The different edge thickness of the lens will cause the support roller 103a to repeatedly move in the Z-axis direction. The displacement is fed back to the sensor 103b, which generates height deviation data in real time. Finally, it is transmitted to the corresponding Z-axis cylinder to realize the machining tool in the chamfering state. After algorithm analysis, the adjustment height is obtained, and the Z-axis compensation command is output to realize the dynamic adjustment of the chamfering depth.
[0032] Preferably, the machining tool 301 can be used for both planing and chamfering, such as Figure 4 The image shows the tool position during edge planing. The machining tool 301 is perpendicular to the support table 101, as shown. Figure 1The image shows the tool state during chamfering. The machining tool 301 forms an angle of 30 to 45 degrees with the support table, which is dynamically adjusted by the angle adjustment mechanism 303 according to the lens processing requirements.
[0033] Better, such as Figure 4 As shown, the multi-axis moving mechanism 302 controls the position of the robotic arm 3 through X / Y / Z three-axis linear movement. The driving method is that the cylinder 304 pushes the robotic arm to slide on its respective slide rail. The angle adjustment mechanism 303 automatically adjusts through the telescopic rod 303a and the self-adjusting rotating shaft 303b.
[0034] In summary, the automatic chamfering device for irregular glass lenses in this embodiment, through the innovative design of the roller sensing component, detects the height deviation of opposite sides in real time during the lens chamfering process. Combined with the dynamic feedback of the high-precision displacement sensor and the floating bracket, it can synchronously generate Z-axis compensation commands to drive the robotic arm to precisely adjust the tool height, thereby ensuring that the chamfering depth strictly matches the symmetrical contour of the lens. This mechanism effectively solves the problem of uneven chamfering height caused by the difference between the inner and outer convexity of irregular lenses, significantly reduces the risk of edge chipping, and improves the adaptability of subsequent frame cutting. In addition, through the elastic buffer layer supporting the surface of the roller and the linear slide rail structure of the floating bracket, the device can flexibly conform to the curvature changes of the lens edge, avoiding surface scratches while adapting to irregular lenses of different sizes and shapes, greatly expanding the applicability of the equipment. Furthermore, the coordinated control of the multi-axis movement mechanism and the angle adjustment mechanism realizes the flexible positioning and dynamic adjustment of the tool in the X / Y / Z three-axis directions, which can accurately adapt to the chamfering requirements of complex contours and overcome the problem of poor adaptability of traditional fixed tools to the processing of irregular lenses.
[0035] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.
Claims
1. An apparatus for automatically chamfering an irregular glass lens, characterized in that, include: Mounting base (1), the beveled lens is centered on the upper surface of the support platform (101) at the top of the mounting base (1), the support platform (101) is driven by a rotary motor (102) to achieve rotation, and a roller sensing component (103) is provided on one side of the support platform (101). The downward pressing rod (2) is driven by the vertical cylinder (201) to the elastic pressing head (202) to flexibly fix the lens; The robotic arm (3) includes a machining tool (301), a multi-axis moving mechanism (302) for adjusting the position of the robotic arm (3), and an angle adjusting mechanism (303) for adjusting the angle of the machining tool (301). The roller sensing component (103) is located on the opposite side of the contact surface between the lens and the processing tool (301). It includes a support roller (103a) that can roll with the lens and a sensor (103b). The sensor (103b) can convert the sensing data into a height deviation value and generate a Z-axis compensation command for the robotic arm (3) based on the height deviation value. The robotic arm (3) is then driven to adjust its vertical position through the multi-axis moving mechanism (302).
2. The apparatus for automatically chamfering an irregular glass lens according to claim 1, wherein, The surface of the support roller (103a) is covered with an elastic buffer layer.
3. The apparatus for automatically chamfering an irregular glass lens according to claim 2, wherein, The roller sensing assembly (103) also includes a floating bracket (103c), which is connected to the mounting base (1) via a linear slide rail (103d) and is equipped with a reset spring inside to keep the support roller (103a) always close to the edge of the lens.
4. The apparatus for automatically chamfering an irregular glass lens according to claim 3, wherein, The sensor (103b) is a high-precision displacement sensor and is rigidly connected to the end of the floating bracket (103c).
5. The apparatus for automatically chamfering an irregular glass lens according to claim 4, wherein, The Z-axis travel of the floating support (103c) is ±5mm, and the displacement accuracy is ≤0.01mm.
6. The apparatus for automatically chamfering an irregular glass lens according to claim 1, wherein, The multi-axis moving mechanism (302) includes X / Y / Z three-axis linear movement control, all of which are driven by cylinders (304).
7. The apparatus for automatically chamfering an irregular glass lens according to claim 6, wherein, The angle adjustment mechanism (303) includes a telescopic rod (303a) disposed on one side of the machining tool (301) and a self-adjusting rotating shaft (303b).
8. The apparatus for automatically chamfering an irregular glass lens according to claim 1, wherein, The support platform (101) includes an elastic support pad (101a) disposed on its surface, the elastic support pad (101a) being centrally located in a ring shape.