Grinding mode switching device of electromagnetic clutch-based spectacle lens edger

Abstract

The utility model discloses a kind of grinding mode switching device of glasses lens edger based on electromagnetic clutch, it relates to lens edger technical field.It includes: mainframe, as carrier;Lens clamping assembly, for fixing the lens blank to be processed, and drive its rotation;Rack rail, along predetermined path fixedly arranged on the mainframe;Drive assembly, set in the lens clamping assembly and with rack rail meshing, drive assembly is used to drive the lens clamping assembly linearly moves along the length direction of rack rail.The utility model has beneficial effect for by servo motor direct drive gear, cooperate rack rail, realize micron level linear displacement precision, by rigid meshing structure between gear and rack, avoid the elastic deformation and slip of belt drive, ensure machine head positioning stability, satisfy the rigorous demand of position accuracy to plane grinding.

Description

Technical Field

[0001] This utility model relates to the field of lens edging machine technology, specifically to a grinding mode switching device for an eyeglass lens edging machine based on an electromagnetic clutch. Background Technology

[0002] The spectacle lens edging machine is a core piece of equipment in spectacle manufacturing. Its function is to precisely grind optical lens blanks into shape and size according to the frame. During the grinding process, the lens contour typically includes flat areas and sharp corner areas with complex curvatures.

[0003] Traditional eyeglass lens edging machines, using a single drive method, struggle to simultaneously meet the high-precision control required for surface grinding and the adaptive needs of grinding curved, sharp corners. Surface grinding necessitates precise control of the machine head position, while sharp corner grinding requires the machine head to move freely with the lens curvature. Existing technologies often employ simple motor belt-driven magnetic engagement and locking mechanisms for mode switching, resulting in complex structures that are prone to damage and have low precision. The switching process is not precise enough, affecting processing accuracy. Furthermore, it is difficult to guarantee the fit between the lens and the grinding wheel during sharp corner grinding, leading to a lower yield rate. Utility Model Content

[0004] The purpose of this invention is to address the significant shortcomings of traditional spectacle lens edging machines in achieving high-precision and highly adaptable grinding, by providing a grinding mode switching device for spectacle lens edging machines based on an electromagnetic clutch.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a grinding mode switching device for an eyeglass lens edging machine based on an electromagnetic clutch, comprising:

[0006] The mainframe serves as the carrier;

[0007] Lens clamping assembly, used to fix the lens blank to be processed and drive it to rotate;

[0008] A rack and pinion track is fixedly mounted on the main frame along a predetermined path;

[0009] A drive assembly is disposed inside the lens clamping assembly and meshes with the rack and pinion track. The drive assembly is used to drive the lens clamping assembly to move linearly along the length direction of the rack and pinion track.

[0010] Furthermore, the drive assembly includes an electromagnetic clutch, a drive gear, and a servo motor. The output end of the servo motor is connected to the drive gear, and the drive gear is fixedly connected to the electromagnetic clutch and meshes with the rack and pinion track.

[0011] Furthermore, the rack track is a cylindrical rack, and its outer circumferential surface is continuously machined with gear teeth for meshing transmission along the axial direction.

[0012] After adopting the above technical solution, the beneficial effects of this utility model are as follows: by directly driving the gear with a servo motor and cooperating with the rack and pinion track, micron-level linear displacement accuracy is achieved. The rigid meshing structure between the gear and the rack avoids the elastic deformation and slippage of the belt drive, ensuring the positioning stability of the machine head and meeting the stringent requirements of surface grinding for positional accuracy. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the lens clamping assembly in this utility model.

[0016] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0017] Explanation of reference numerals in the attached drawings: 1. Main frame; 2. Lens clamping assembly; 3. Rack and pinion track; 31. Gear tooth; 4. Drive assembly; 41. Electromagnetic clutch; 42. Drive gear; 43. Servo motor. Detailed Implementation

[0018] See Figure 1-3 As shown, the technical solution adopted in this specific embodiment is: a grinding mode switching device for an eyeglass lens edging machine based on an electromagnetic clutch, which includes:

[0019] Mainframe 1 serves as the carrier;

[0020] Lens clamping assembly 2 is used to fix the lens blank to be processed and drive it to rotate;

[0021] The rack and pinion track 3 is fixedly mounted on the main frame 1 along a predetermined path. Specifically, the rack and pinion track 3 is a rack, whose outer circumferential surface is continuously machined with gear teeth 31 for meshing transmission along the axial direction.

[0022] A drive assembly 4, disposed inside the lens clamping assembly 2 and meshing with the rack and pinion track 3, drives the lens clamping assembly 2 to move linearly along the length of the rack and pinion track 3. Specifically, the drive assembly 4 includes an electromagnetic clutch 41, a drive gear 42, and a servo motor 43. The output end of the servo motor 43 is connected to the drive gear 42, which is fixedly connected to the electromagnetic clutch 41 and meshes with the rack and pinion track 3. By eliminating easily aging belts and magnetic assemblies and replacing them with an all-metal gear-rack transmission, the failure rate is reduced and the equipment lifespan is extended.

[0023] Planar mode: Electromagnetic clutch 41 is engaged, gears and racks are rigidly locked, and the machine head is fixed.

[0024] Sharp corner mode: When the electromagnetic clutch 41 is disengaged, the machine head is freed from the rack constraint and can move freely following the curvature of the lens. There is no mechanical interference when the machine head is grinding sharp corners. The lens naturally conforms to the curved surface of the grinding wheel, avoiding the forced displacement caused by traditional magnetic locking.

[0025] The working principle of this utility model:

[0026] 1: Initial Preparation

[0027] The lens blank is fixed on the lens clamping assembly 2, and the grinding wheel rotates at high speed and is ready for use.

[0028] The system identifies the current processing stage (flat / sharp corner area) according to a preset program.

[0029] Step 2: Surface grinding mode (rigid locking)

[0030] The clutch rigidly locks the drive gear 42 to the output shaft of the servo motor 43. The motor drives the lens clamping assembly 2 to move along a straight path by meshing the gear with the cylindrical rack and pinion track 3. The position of the camera head is controlled in a closed loop by the servo motor 43 to ensure the dimensional accuracy of the lens frame edge contour.

[0031] Step 3: Switch to the sharp angle grinding mode (free follow-up)

[0032] The drive gear 42 is decoupled from the servo motor 43, and the gear is in a free-spinning state on the rack track 3. The lens clamping assembly 2 is not rigidly connected to the rack track 3, but only lightly contacts the track through the gear (without transmitting driving force). The grinding wheel applies a grinding force to the curved corners of the lens, pushing the lens clamping assembly 2 to slide freely along the rack track 3. The movement of the machine head is dynamically adjusted by the contact force between the grinding wheel and the lens to achieve curved surface fitting.

[0033] Step 4: Sharp corner grinding complete, reset to planar mode.

[0034] Once the sharp corner grinding is complete, the clutch is energized to lock the gears and motor. Drive gear 42 engages with the rack, pulling the machine head back to the preset coordinates, preparing for the next stage of surface grinding.

[0035] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A grinding mode switching device for an eyeglass lens edging machine based on an electromagnetic clutch, characterized in that: It includes: The main frame (1) serves as the carrier; Lens clamping assembly (2) is used to fix the lens blank to be processed and drive it to rotate; The rack and pinion track (3) is fixedly mounted on the main frame (1) along a predetermined path; The drive assembly (4) is disposed inside the lens clamping assembly (2) and meshes with the rack and pinion track (3). The drive assembly (4) is used to drive the lens clamping assembly (2) to move linearly along the length direction of the rack and pinion track (3).

2. The grinding mode switching device for an eyeglass lens edging machine based on an electromagnetic clutch according to claim 1, characterized in that: The drive assembly (4) includes an electromagnetic clutch (41), a drive gear (42) and a servo motor (43). The output end of the servo motor (43) is connected to the drive gear (42). The drive gear (42) is fixedly connected to the electromagnetic clutch (41) and meshes with the rack and pinion track (3).

3. The grinding mode switching device for an eyeglass lens edging machine based on an electromagnetic clutch according to claim 1, characterized in that: The outer circumferential surface of the rack track (3) is continuously machined with gear teeth (31) for meshing transmission along the axial direction.

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