A lens centering and edging machine and a chuck head dressing assembly

Abstract

The utility model discloses a lens centering and edging machine and clamping head trimming assembly, it has the trimming piece for trimming first clamping head and second clamping head, the trimming piece includes the bearing frame, and the bearing frame can displace with the polishing piece for polishing lens, and is equipped with trimming knife on the bearing frame, and the trimming knife can displace with the bearing frame, and the first clamping head and second clamping head need trimming position are corresponded. To solve the problem of low trimming precision and complicated trimming process of workpiece clamping head in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of cold processing technology of optical components, specifically to a lens centering and edging machine and a clamping head trimming assembly. Background Technology

[0002] In the field of optical lens manufacturing, the workpiece chuck is a key component ensuring machining accuracy, and its performance directly affects the surface quality and dimensional accuracy of the lens. As the application of optical lenses in precision instruments, optoelectronic equipment, and other fields continues to deepen, market demands for lens machining accuracy and production efficiency are constantly rising. However, in actual machining processes, the workpiece chuck will wear down due to long-term contact and friction with the lens workpiece. Furthermore, to accommodate the curvature of different lenses, i.e., to adapt to different lens R-values, the workpiece chuck needs to be adjusted.

[0003] Currently, when chucking, it is usually necessary to remove it from the spindle, calibrate it, and then reinstall it. This process inevitably introduces positioning errors, causing fluctuations in machining accuracy, which makes it difficult to meet the production requirements of high-precision optical lenses. At the same time, the operation of removing, calibrating, and reinstalling the chuck is cumbersome, significantly increasing equipment downtime, severely restricting the improvement of production efficiency, and increasing the production costs of enterprises. Utility Model Content

[0004] The purpose of this invention is to solve the problems of cumbersome workpiece clamping head trimming process and low trimming accuracy in the prior art, and to provide a lens centering edge grinding machine and clamping head trimming assembly.

[0005] To address the shortcomings of the aforementioned technical problems, the present invention adopts the following technical solution: a clamping head trimming assembly, which has trimming parts for trimming a first clamping head and a second clamping head.

[0006] The trimming component includes a support frame that can move with the grinding component used for grinding the lens, and a trimming blade is provided on the support frame that can move with the support frame to correspond to the trimming positions of the first clamping head and the second clamping head.

[0007] As a further optimization of the clamping head trimming assembly of this utility model: a bearing cylinder is rotatably provided on the bearing frame, and a fastening screw is provided at the end of the bearing cylinder that passes through the bearing frame. The trimming knife passes through the bearing cylinder and is the cutting head at the corresponding clamping head and the second clamping head. The fastening screw is threadedly connected to the bearing cylinder to press the trimming knife and fix it to the bearing frame.

[0008] As a further optimization of the clamping head trimming assembly of this utility model: the support frame is provided with a sliding groove, and the sliding groove is provided with connecting screws that can fix the support frame and the grinding workpiece together.

[0009] As a further optimization of the clamping head trimming assembly of this utility model: the outer periphery of the fastening screw is provided with anti-slip texture.

[0010] A lens centering and edging machine includes an adjustment frame, a pusher, and a second clamping member mounted on a support member. The pusher member has a first clamping member, and both the first and second clamping members are driven to rotate synchronously by a drive member mounted on the support member. The first and second clamping members have a first clamping head and a second clamping head at their opposite ends, respectively, to clamp the lens and rotate it at high speed under the drive of the drive member. The adjustment frame has a grinding member for grinding the lens, and the grinding member has a protective cover. The protective cover has a trimming member included in a clamping head trimming assembly.

[0011] As a further optimization of the lens centering and edging machine of this utility model: the adjustment frame is composed of vertical and horizontal linear guides driven by a stepper motor, and the pushing component is a vertical linear guide driven by a stepper motor.

[0012] As a further optimization of the lens centering and edging machine of this utility model: the support includes a support base and a processing bracket located at the center of the upper side of the support base. The processing bracket is provided with a first clamping member and a second clamping member on both sides in the width direction.

[0013] As a further optimization of the lens centering and edging machine of this utility model: the outer periphery of the support base is covered with a baffle, and the support base is provided with a collection groove at each of the two work stations, and the collection groove is provided with a discharge hole for discharging waste into the support base.

[0014] As a further optimization of the lens centering and edging machine of this utility model: the driving component includes a driving motor and a transmission shaft mounted on the support. The two ends of the transmission shaft are respectively provided with a first gear and a second gear. The first gear and the second gear mesh with a driven gear and a synchronous gear respectively. The synchronous gear drives the second clamping member to rotate, and the driven gear drives the first clamping member to rotate. The first gear meshes with a driving gear on the output shaft of the driving motor.

[0015] As a further optimization of the lens centering and edging machine of this utility model: the first clamping member and the second clamping member are arranged vertically or horizontally.

[0016] Compared with existing technologies, this utility model has the following advantages: This utility model utilizes the CNC system of existing lens centering and edging machines to achieve high-precision trimming of the first and second clamping heads by using a trimming component mounted on the protective cover of the grinding part. The trimming component includes a support frame that can be connected to the protective cover, and the support frame is equipped with a rotatable support cylinder and threaded fastening screws, facilitating the operator to adjust and fix the trimming blade angle penetrating the support cylinder, thereby further improving the trimming accuracy of the first and second clamping heads. Placing the trimming component on the protective cover eliminates the need for operators to disassemble the first or second clamping heads, avoiding the problems of reduced work efficiency and accuracy caused by repeated installation. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the present utility model;

[0018] Figure 2 This is a schematic diagram of the first cross-sectional structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the second cross-sectional structure of the present invention;

[0020] Figure 4 This is an enlarged structural diagram of point I of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the trimming part of this utility model;

[0022] Figure 6 This is a cross-sectional structural diagram of the first clamping head and the second clamping head of this utility model;

[0023] The markings in the diagram are as follows: 1. Support component; 101. Support base frame; 102. Baffle; 103. Collection groove; 104. Processing bracket; 105. Impurity discharge hole; 2. Adjustment frame; 3. Drive component; 301. Drive motor; 302. Drive gear; 303. First gear; 304. Transmission shaft; 305. Second gear; 306. Driven gear; 307. Synchronizing gear; 4. Pushing component; 5. First clamping component; 6. Second clamping component; 7. Grinding component; 8. Dressing component; 801. Bearing frame; 802. Connecting screw; 803. Slide groove; 804. Fastening screw; 805. Dressing tool; 806. Bearing cylinder; 9. Protective cover; 10. Second clamping head; 11. First clamping head. Detailed Implementation

[0024] To better understand this utility model, the following embodiments further illustrate the content of this utility model, but the content of this utility model is not limited to the following embodiments.

[0025] like Figure 3 , Figure 4 and Figure 5 As shown, a clamping head trimming assembly includes a trimming component 7 whose displacement is controlled by a CNC system. The trimming component 7 includes a support frame 801 whose displacement is controlled by the CNC system. A sliding groove 803 is provided on the support frame 801, and a connecting screw 802 is provided within the sliding groove 803. The connecting screw 802 facilitates the operator in fixing the support frame 801 to a suitable position and allows the operator to adjust the position of the support frame 801 for use or storage as needed. Specifically, multiple connecting screws 802 are provided to stably connect the support frame 801 to the trimming component 7. A support cylinder 806 is rotatably mounted on the support frame 801. A trimming blade 805 and a fastening screw 804 are sequentially mounted on the support cylinder 801. The trimming blade 805 passes through the support cylinder 806 and aligns with the clamping head. The fastening screw 804 is threadedly connected to the support cylinder 806, pressing the trimming blade 805 onto the support frame 801. This allows operators to easily adjust the angle of the dressing tool 805 according to specific conditions. The dressing tool 805 is a double-sided turning tool, enabling alternating dressing of the vertically positioned first clamping head 11 and second clamping head 10, thus improving the dressing efficiency of both clamping heads. The fastening screw 804 has anti-slip grooves on its outer circumference, facilitating operator rotation to adjust the angle of the dressing tool 805. Alternatively, the CNC system can be replaced by manual adjustment by the operator for dressing the first clamping head 11 and second clamping head 10.

[0026] A lens centering and edging machine, such as Figure 2 and Figure 6 As shown, it has a first clamping member 5 and a second clamping member 6 connecting the first clamping head 11 and the second clamping head 10. Specifically, the first clamping head 11 and the second clamping head 10 are threadedly connected to the opposite ends of the first clamping member 5 and the second clamping member 6, respectively. Figure 1As shown, the second clamping member 6 is fixedly mounted on the support base 101 included in the support member 1. The first clamping member 5 is connected to the pusher 4 mounted on the processing bracket 104 included in the support member 1. The pusher 4 drives the first clamping member 5 to move vertically, which in turn drives the first clamping head 11 to move vertically, making it easier for the operator to place the lens onto the second clamping head 10 of the second clamping member 6. Then, the pusher 4 can be used to drive the first clamping member 5 to move the first clamping head 11 downward to clamp the lens. Both the first clamping member 5 and the second clamping member 6 are driven by the drive member 3 mounted on the support member 1. The drive member 3 can drive the first clamping member 5 and the second clamping member 6 to rotate synchronously, that is, the lens clamped by the first clamping head 11 and the second clamping head 10 rotates stably. The support member 1 is also equipped with an adjustment frame 2 controlled by a CNC system. The adjustment frame 2 is equipped with a grinding component 7. Driven by the adjustment frame 2, the grinding component 7, including a grinding disc, aligns with the corresponding position of the lens, and then works with the rotating lens to perform a grinding process. The grinding disc of the grinding component 7 is provided with a protective cover 9 on its outer periphery. A connecting screw 802 is threaded onto the protective cover 9. The connecting screw 802 can connect the support frame 801 to the protective cover 9 and can cooperate with the slide groove 803 to allow the operator to rotate the support frame 801 as needed, so that the dressing tool 805 aligns with the first clamping head 11 and the second clamping head 10 to adjust the opposite ends of the first clamping head 11 and the second clamping head 10, so that the first clamping head 11 and the second clamping head 10 are adapted to the R value of the lens, or deviated from the first clamping head 11 and the second clamping head 10, so that the grinding component 7 can grind the lens held by the first clamping head 11 and the second clamping head 10. This avoids the need for operators to repeatedly remove the first clamping head 11 and the second clamping head 10 from the spindle, thus avoiding the problems of inaccurate precision and reduced production efficiency caused by repeated installation of the first clamping head 11 and the second clamping head 10. At the same time, the CNC system that controls the lens grinding using the original control grinding component 7 ensures the finishing accuracy of the first clamping head 11 and the second clamping head 10.

[0027] The pusher 4 is a vertically arranged linear guide frame driven by a stepper motor, and the adjustment frame 2 is an assembly of vertical and horizontal linear guide frames driven by stepper motors. The specific models, structures, and how the pusher 4 and adjustment frame 2 are coordinated with the CNC system for displacement are all considered existing technology. The motion accuracy of the CNC system is ±1μm, and the model and motion method of the CNC system are also existing technology. The adjustment frame 2 can also be a vertical and horizontal linear guide frame assembly driven by a linear nut pair, allowing operators to manually adjust it according to specific conditions. This allows for precise trimming of the opposite ends of the first clamping head 11 and the second clamping head 10 to accommodate different lens R-values ​​or to adjust its own wear to maintain the stability of the clamped lens.

[0028] The first clamping member 5 adopts a pneumatic structure and is equipped with a pressure sensor, which dynamically adjusts the upper clamping shaft connected to the first clamping head 11, that is, dynamically adjusts the position of the first clamping head 11 to ensure stable clamping of the lens and avoid damage to the lens caused by excessive clamping force.

[0029] like Figure 2 As shown, the driving component 3 includes a driving motor 301 mounted on the processing bracket 104. A driving gear 302 is fixedly mounted on the output shaft of the driving motor 301. The driving gear 302 drives a first gear 303. The first gear 303 rotates synchronously with a second gear 305 through a transmission shaft 304 rotatably mounted inside the processing bracket 104. The first gear 303 and the second gear 305 mesh with the driven gear 306 and the synchronous gear 307 driving the first clamping component 5 and the second clamping component 6, respectively. When the driving motor 301 rotates, the first clamping component 5 and the second clamping component 6 can drive the first clamping head 11 and the second clamping head 10, causing the clamped lens to rotate stably at high speed, so as to cooperate with the grinding component 7, whose displacement is controlled by the CNC system, to perform the lens grinding process.

[0030] The processing bracket 104 has two processing positions arranged along the width direction, namely, two grinding parts 7, two first clamping parts 5, two second clamping parts 6, two adjusting parts 2, and two pushing parts 4, to correspond to the two processing positions, so as to improve the processing efficiency of the lens.

[0031] The support base 101 is surrounded by multiple baffles 102 to enclose its periphery. Collection grooves 103 are provided at two processing positions on the support base 101, corresponding to the two sets of first clamping members 5 and second clamping members 6. These grooves collect waste generated during the trimming process of the trimming tool 805 on the first clamping head 11 and second clamping head 10, as well as waste generated during lens grinding, thus reducing the impact of waste on the external environment. A discharge hole 105 is provided at the bottom of the collection groove 103 to guide debris into the support base 101, facilitating the removal of the baffles 102 covering the support base 101 for centralized waste disposal.

[0032] Based on the above principle, the first clamping member 5 and the second clamping member 6 are arranged vertically or horizontally to make the lens centering and edging machine a vertical or horizontal lens centering and edging machine, that is, to allow the trimming member 7 to be installed on the grinding disc protective cover 9 included in the vertical or horizontal lens centering and edging machine for use.

[0033] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the substantive content of this utility model.

Claims

1. A clamping head trimming assembly, characterized in that: It has a trimming part (8) for trimming the first clamping head (11) and the second clamping head (10); The trimming component (8) includes a support frame (801), which can be displaced with the grinding component (7) used for grinding the lens, and a trimming blade (805) is provided on the support frame (801), which can be displaced with the support frame (801) to correspond to the trimming position of the first clamping head (11) and the second clamping head (10).

2. The clamping head trimming assembly as described in claim 1, characterized in that: The support frame (801) is rotatably provided with a support cylinder (806). The end of the support cylinder (806) passing through the support frame (801) is provided with a fastening screw (804). The trimming knife (805) passes through the support cylinder (806) and is located at the corresponding clamping head (11) and the second clamping head (10) as the cutting head. The fastening screw (804) is threadedly connected to the support cylinder (806) to press the trimming knife (805) and fix it to the support frame (801).

3. The clamping head trimming assembly as described in claim 2, characterized in that: The support frame (801) is provided with a sliding groove (803), and the sliding groove (803) is provided with a connecting screw (802) that can fix the support frame (801) and the grinding part (7) together.

4. The clamping head trimming assembly as described in claim 2, characterized in that: The fastening screw (804) has anti-slip texture on its outer periphery.

5. A lens centering and edging machine, comprising an adjusting frame (2), a pushing member (4), and a second clamping member (6) disposed on a support member (1); the pushing member (4) is provided with a first clamping member (5), both the first clamping member (5) and the second clamping member (6) are driven to rotate synchronously by a driving member (3) disposed on the support member (1), and the first clamping member (5) and the second clamping member (6) are respectively provided with a first clamping head (11) and a second clamping head (10) at opposite ends to clamp the lens and rotate it at high speed under the drive of the driving member (3); the adjusting frame (2) is provided with a grinding member (7) for grinding the lens, and the grinding member (7) is provided with a protective cover (9), characterized in that: The protective cover (9) is provided with a trimming element (8) included in any of the clamping head trimming components described in claims 1-4.

6. A lens centering and edging machine as described in claim 5, characterized in that: The adjustment frame (2) consists of vertical and horizontal linear guides driven by a stepper motor, and the pusher (4) is a vertical linear guide driven by a stepper motor.

7. A lens centering and edging machine as described in claim 5, characterized in that: The support member (1) includes a support base (101) and a processing bracket (104) located at the center of the upper side of the support base (101). The processing bracket (104) has a first clamping member (5) and a second clamping member (6) on both sides in the width direction.

8. A lens centering and edging machine as described in claim 7, characterized in that: The outer periphery of the support base (101) is covered with a baffle (102). The support base (101) is provided with a collection groove (103) at each of the two work stations, and a discharge hole (105) is opened in the collection groove (103) for discharging waste into the support base (101).

9. A lens centering and edging machine as described in claim 5, characterized in that: The driving component (3) includes a drive motor (301) mounted on the support (1) and a transmission shaft (304). The two ends of the transmission shaft (304) are respectively provided with a first gear (303) and a second gear (305). The first gear (303) and the second gear (305) mesh with the driven gear (306) and the synchronous gear (307) respectively. The synchronous gear (307) drives the second clamping member (6) to rotate, and the driven gear (306) drives the first clamping member (5) to rotate. The first gear (303) meshes with the drive gear (302) mounted on the output shaft of the drive motor (301).

10. A lens centering and edging machine as described in claim 5, characterized in that: The first clamping member (5) and the second clamping member (6) are arranged vertically or horizontally.

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