Automatic level adjusting structure of an ophthalmic lens edger

Abstract

This utility model discloses an automatic leveling structure for an eyeglass lens edging machine, relating to the field of lens edging machine technology. It includes: a leveling actuator comprising at least three height-adjustable legs, each leg housing a drive motor and transmission assembly, the transmission assembly converting the motor's rotational motion into the linear lifting motion of the legs; a leveling detection module comprising tilt sensors distributed on the equipment base, used to detect the equipment's tilt status in real time and generate a level deviation signal; and a controller electrically connected to the leveling detection module and the leveling actuator. The advantages of this utility model are that it completely replaces the traditional tedious leveling operations such as manually applying shims and tightening screws. Users only need to start the leveling program, and the system can automatically complete the entire leveling process, greatly reducing the technical requirements and labor intensity for operators, and saving installation and debugging time.

Description

Technical Field

[0001] This utility model relates to the field of lens edging machine technology, specifically to an automatic leveling structure for an eyeglass lens edging machine. Background Technology

[0002] Spectacle lens edging machines are core equipment in eyeglass manufacturing, and their processing precision directly affects the optical performance and wearing comfort of the lenses. To ensure processing precision, the equipment must be kept strictly level during operation. Currently, most mainstream spectacle lens edging machines on the market adopt a leg support structure. Specifically, the machine has three or four legs at the bottom, and each leg is equipped with an adjustable nut-type foot (or adjusting cup). Leveling the machine is achieved by manually rotating these nuts, changing the effective length of each individual leg to adjust the overall level.

[0003] However, this traditional outrigger support and leveling method has many significant drawbacks in practical applications: low adjustment accuracy: the leveling process relies entirely on the operator's visual observation of the level on the equipment (such as a bubble level) or on experience-based judgment, and involves repeated trial adjustments by manually rotating the nuts. This method is greatly affected by the operator's experience and subjective judgment, making it difficult to achieve high-precision, rapid, one-time leveling, and failing to meet the stringent requirements of modern high-precision edge grinding processing for equipment foundation stability.

[0004] Low operational efficiency: Because the equipment is a rigid unit, adjusting the height of any one outrigger will affect the overall levelness. Therefore, each leveling operation (especially after initial installation or re-leveling after relocation) typically requires adjusting the nuts on at least two or even three outriggers, involving multiple cycles of observation, adjustment, and re-observation. This process is time-consuming and labor-intensive, significantly reducing the efficiency of equipment deployment and maintenance.

[0005] Poor long-term stability: The core adjusting component of a nut-type foot is the threaded pair (screw and nut). During long-term use, especially under frequent adjustments or equipment vibration environments, wear inevitably occurs on the threaded contact surfaces. This wear leads to an increase in the clearance of the threaded pair, which in turn causes slight, uncontrollable settlement or displacement of the equipment during operation or when subjected to external forces (such as personnel operation or ground micro-vibrations), disrupting the adjusted level state and ultimately affecting the accuracy and stability of the edge grinding process. Summary of the Invention

[0006] The purpose of this invention is to address the problems of low adjustment accuracy, low operating efficiency, and poor long-term stability in existing leveling methods by providing an automatic leveling structure for an eyeglass lens edging machine.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an automatic leveling structure for an eyeglass lens edging machine, comprising:

[0008] The leveling actuator includes at least three height-adjustable outriggers, one of which has a built-in drive motor and transmission assembly, which converts the rotational motion of the motor into the linear lifting motion of the outrigger.

[0009] Horizontal detection module: includes tilt sensors distributed on the equipment base, used to detect the tilt status of the equipment in real time and generate a horizontal deviation signal;

[0010] Controller: Electrically connected to the level detection module and the leveling actuator, configured as follows:

[0011] Receive the horizontal deviation signal and calculate the target adjustment amount for each outrigger;

[0012] Generate motor control commands to drive the motors of the corresponding outriggers;

[0013] The outrigger height is adjusted in a coordinated manner until the equipment reaches a horizontal position.

[0014] Furthermore, the drive motor is a DC stepper worm gear reducer motor or a servo motor; the transmission assembly includes a screw connected to the motor output shaft and a nut that cooperates with the screw; the rotation of the drive motor drives the nut to move along the screw axis, thereby driving the outriggers to rise and fall synchronously.

[0015] Furthermore, the transmission assembly may employ any of the following alternatives:

[0016] a) Servo electric linear actuator;

[0017] b) Stepper motor in conjunction with ball screw;

[0018] c) Hydraulic synchronous lifting column;

[0019] d) Shape memory alloy deformation actuator.

[0020] Furthermore, the tilt sensor of the level detection module can be any of the following types:

[0021] a) MEMS accelerometer electronic level;

[0022] b) Liquid capacitive level sensor;

[0023] c) Photoelectric tilt sensor;

[0024] d) Gyroscope combined with sensor;

[0025] e) Laser flatness measuring instrument.

[0026] Furthermore, the tilt sensor can be installed in any of the following layouts:

[0027] a) The three sensors are distributed at equal angles around the circumference of the equipment base;

[0028] b) The four sensors are arranged in a rectangular pattern at the four corners of the equipment base;

[0029] c) An array-style layout including redundant sensors;

[0030] d) Equipped with a detachable calibration sensor interface.

[0031] Furthermore, the controller is further configured with:

[0032] Mode switching unit: Allows users to select automatic leveling or manual fine-tuning;

[0033] One-click leveling unit: Automatically completes the entire process of level calibration after being triggered.

[0034] Furthermore, the support structure of the outrigger is: a three-point automatic leveling outrigger or a four-point independent adjustment platform.

[0035] Furthermore, the equipment base adopts any of the following mechanical structures:

[0036] a) Cast iron integral casting base;

[0037] b) Welded steel frame structure;

[0038] c) Composite material integral molding base;

[0039] d) Modular splicing structure.

[0040] Furthermore, the outrigger height adjustment interface adopts any of the following auxiliary mechanisms:

[0041] a) Thread lifting fine-tuning knob;

[0042] b) Wedge block leveling mechanism;

[0043] c) Eccentric wheel adjustment device.

[0044] After adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0045] It completely replaces the traditional tedious leveling operations such as manually placing shims and tightening screws. Users only need to start the leveling program, and the system can automatically complete the entire leveling process, which greatly reduces the technical requirements and labor intensity of operators and saves installation and debugging time. Attached Figure Description

[0046] 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.

[0047] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 .

[0048] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 .

[0049] Explanation of reference numerals in the attached drawings: support leg 1, drive motor 11, transmission assembly 12, screw 121, nut 122, equipment base 2, tilt sensor 21, controller 3. Detailed Implementation

[0050] See Figure 1-2 As shown, the technical solution adopted in this specific embodiment is: an automatic leveling structure for an eyeglass lens edging machine, which includes: a leveling actuator, a leveling detection module, and a controller 3.

[0051] Leveling actuator: The equipment has at least three outriggers 1 that can be independently raised and lowered. Each outrigger 1 contains:

[0052] A drive motor 11: usually a DC stepper worm gear reducer motor or a servo motor, is responsible for providing power.

[0053] A lifting device: The most basic design is that a motor drives a screw 121 to rotate, and a nut 122 fixed to the outrigger 1 will move up and down along the screw 121, so that the outrigger 1 can be raised and lowered.

[0054] Alternative solutions include simpler servo electric actuators, or a more precise combination of a stepper motor and ball screw. For applications requiring significant force, hydraulic lifting columns can be considered. There are even solutions using special materials like shape memory alloys for the actuators.

[0055] Horizontal detection module: Tilt sensors 21 are distributed on the base of the equipment (on the support leg 1 of the equipment). These sensors constantly monitor whether the machine is tilted. Once a tilt is detected, they immediately send a signal to the controller 3 indicating "how much it is tilted and in which direction".

[0056] Alternative solutions: There are many types of sensors available, ranging from common MEMS accelerometers and electronic levels to more precise liquid capacitive and photoelectric sensors, or gyroscope-based sensors with good dynamic performance. For the most demanding applications, even laser flatness measuring instruments can be used.

[0057] Alternative solution: The most common way to install sensors is to mount them on a base; for added security, multiple sensors can be installed as backups (redundant array). Additionally, an interface is designed to allow users to connect external high-precision calibration sensors for periodic calibration.

[0058] Controller 3: Controller 3 is connected to the sensor and the motor-driven support leg 1.

[0059] After receiving the "skew signal" from the sensor, controller 3 will immediately calculate how much each leg needs to be raised or lowered to level the machine.

[0060] Once the calculation is complete, it sends precise instructions to the corresponding support leg motor (such as how many revolutions the motor should make and which direction it should turn).

[0061] Once the motor of outrigger 1 receives the command, it begins to move, raising and lowering outrigger 1. Controller 3 continuously monitors the sensor feedback, making fine adjustments until all sensors indicate that the outriggers are aligned. This process is an automatic closed-loop system.

[0062] User-friendly features:

[0063] You can switch between "automatic leveling" and "manual fine-tuning" modes.

[0064] There is a "one-click leveling" button. Press it once and the machine will automatically complete the entire leveling process, which is very convenient.

[0065] The working principle of this utility model:

[0066] 1. Real-time monitoring of horizontal status:

[0067] Tilt sensors 21 distributed on the equipment base 2 (such as three MEMS accelerometers arranged in a 120° layout) continuously collect the tilt angle data of the equipment.

[0068] The sensor converts the tilt signal into an electrical signal (such as voltage or digital signal) and transmits it to the controller 3.

[0069] 2. Horizontal Deviation Analysis and Calculation:

[0070] Controller 3 receives data from each sensor and calculates the current horizontal deviation of the equipment using a trigonometric algorithm.

[0071] For example: Construct a virtual plane based on data from three sensors, and calculate the height difference (target adjustment amount) between the position of each outrigger 1 and the target horizontal plane.

[0072] Based on the preset leveling accuracy threshold (e.g., ±0.05°), determine whether leveling needs to be triggered.

[0073] 3. Generation of coordinated leveling instructions:

[0074] Controller 3 generates differentiated instructions based on the calculation results, driving the motor of the corresponding support leg 1:

[0075] The instructions include motor direction (lift / lower), rotation angle (adjustment amount), and speed parameters.

[0076] 4. Precise execution of the transmission mechanism:

[0077] After receiving a command, the motor (such as a DC stepper worm gear motor) rotates, and the rotational motion is converted into linear motion through the screw 121-nut 122 pair.

[0078] Nut 122 moves axially along screw 121, pushing the foot of support leg 1 to rise and fall, achieving millimeter-level precision adjustment.

[0079] The self-locking characteristic of the worm gear: After adjustment, the position is automatically locked to prevent displacement caused by vibration (solving the wear problem of traditional threaded pairs).

[0080] 5. Closed-loop calibration and completion:

[0081] After leveling, the sensor checks the horizontal state again; if it does not meet the standard, a fine-tuning cycle is initiated.

[0082] Once the target accuracy is achieved, controller 3 terminates the leveling process and issues a prompt signal.

[0083] 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. An automatic leveling structure for an eyeglass lens edging machine, characterized in that: It includes: The leveling actuator includes at least three height-adjustable outriggers (1), each outrigger (1) having a built-in drive motor (11) and transmission assembly (12), wherein the transmission assembly (12) converts the rotational motion of the motor into the linear lifting motion of the outrigger (1); Horizontal detection module: includes tilt sensors (21) distributed on the equipment base (2) for real-time detection of the equipment tilt state and generation of horizontal deviation signal; Controller (3): Electrically connected to the level detection module and the leveling actuator, and configured as follows: Receive the horizontal deviation signal and calculate the target adjustment amount for each outrigger (1); Generate motor control commands to drive the motor of the corresponding support leg (1) to move; The height of the outriggers (1) is adjusted in a coordinated manner until the equipment reaches a horizontal position.

2. The automatic leveling structure of a spectacle lens edging machine according to claim 1, characterized in that: The drive motor (11) is a DC stepper worm gear reducer motor or a servo motor; the transmission assembly (12) includes a screw (121) connected to the motor output shaft and a nut (122) that cooperates with the screw (121); the drive motor (11) rotates to drive the nut (122) to move axially along the screw (121), thereby driving the support leg (1) to rise and fall synchronously.

3. The automatic leveling structure of a spectacle lens edging machine according to claim 2, characterized in that: The transmission assembly (12) may be adopted by any of the following alternatives: a) Servo electric linear actuator; b) Stepper motor in conjunction with ball screw; c) Hydraulic synchronous lifting column; d) Shape memory alloy deformation actuator.

4. The automatic leveling structure of a spectacle lens edging machine according to claim 1, characterized in that: The tilt sensor (21) of the horizontal detection module is of any of the following types: a) MEMS accelerometer electronic level; b) Liquid capacitive level sensor; c) Photoelectric tilt sensor; d) Gyroscope combined with sensor; e) Laser flatness measuring instrument.

5. The automatic leveling structure of a spectacle lens edging machine according to claim 1 or 4, characterized in that: The tilt sensor (21) is installed in any of the following layouts: a) The sensor is set on the circumference of the equipment base (2); b) Equipped with a detachable calibration sensor interface.

6. The automatic leveling structure of a spectacle lens edging machine according to claim 1, characterized in that: The controller (3) is further configured with: Mode switching unit: Allows users to select automatic leveling or manual fine-tuning; One-click leveling unit: Automatically completes the entire process of level calibration after being triggered.

7. The automatic leveling structure of a spectacle lens edging machine according to claim 1, characterized in that: The support structure of the outrigger (1) is a three-point automatic leveling outrigger (1) or a four-point independent adjustment platform.

8. The automatic leveling structure of a spectacle lens edging machine according to claim 1, characterized in that: The equipment base (2) adopts any of the following mechanical structures: a) Cast iron integral casting base; b) Welded steel frame structure; c) Composite material integral molding base; d) Modular splicing structure.

9. The automatic leveling structure of a spectacle lens edging machine according to claim 1, characterized in that: The outrigger (1) height adjustment interface adopts any of the following auxiliary mechanisms: a) Thread lifting fine-tuning knob; b) Wedge block leveling mechanism; c) Eccentric wheel adjustment device.

Images