Grinding equipment for lens processing

Abstract

The invention discloses grinding equipment for lens machining, and belongs to the technical field of lens machining equipment.The grinding equipment for lens machining comprises a fixing frame, a driving mechanism, a lens fixing mechanism, a liquid receiving mechanism, a grinding mechanism and a liquid conveying mechanism. The grinding fluid in the fluid receiving mechanism can be conveyed into the grinding mechanism, and the grinding fluid in the grinding mechanism can flow back into the fluid receiving mechanism, so that the grinding fluid can be recycled, the waste of the grinding fluid is greatly reduced, and the processing cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of lens processing equipment, and in particular relates to a grinding equipment for lens processing. Background Art

[0002] Endoscope is a detection instrument that integrates traditional optics, ergonomics, precision machinery, modern electronics, mathematics, software, etc. It has image sensors, optical lenses, light sources, mechanical devices, etc. It can enter the stomach through the mouth or other natural channels into the body.

[0003] Optical lenses are used in endoscope equipment. Optical lenses are made of high-purity silicon, boron, sodium, potassium, zinc, lead, magnesium, calcium, barium and other oxides mixed according to a specific formula, melted at high temperature in a platinum crucible, stirred evenly with ultrasound to remove bubbles; then slowly cooled for a long time to prevent internal stress in the glass block. The cooled glass block must be measured by optical instruments to check whether the purity, transparency, uniformity, refractive index and dispersion rate meet the specifications. Qualified glass blocks are heated and forged to become optical lens blanks.

[0004] During the processing of optical lenses, the lenses need to be ground, and grinding fluid needs to be sprayed during the grinding process in order to improve the grinding efficiency and grinding quality of the lenses.

[0005] However, the existing lens processing grinding equipment has obvious deficiencies in the recycling of grinding liquid. The grinding liquid cannot be recycled after use, resulting in a waste of grinding liquid and increased processing costs. Summary of the invention

[0006] The purpose of the present invention is to provide a grinding device for lens processing, which is used to solve the obvious deficiencies in the prior art in the recycling of grinding liquid, that is, the grinding liquid cannot be recycled after use, resulting in a technical problem of waste of grinding liquid.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A grinding device for lens processing, comprising: a fixing frame; a driving mechanism, mounted on the inner top surface of the fixing frame; a lens fixing mechanism, mounted on the driving mechanism and used to clamp and fix the lens; a liquid receiving mechanism, mounted on the fixing frame and used to contain grinding liquid; a grinding mechanism, mounted in the liquid receiving mechanism and used to grind the lens; and a liquid infusion mechanism, mounted on the fixing frame and used to transport the grinding liquid in the liquid receiving mechanism to the grinding mechanism.

[0009] Preferably, the liquid contacting mechanism includes: a first mounting cylinder having an opening at the top; a plurality of through grooves equidistantly arranged on the bottom surface of the first mounting cylinder; a second mounting cylinder mounted on the inner bottom surface of the fixing frame and connected to the bottom surface of the first mounting cylinder; and a filter cylinder fixedly mounted on the inner bottom surface of the second mounting cylinder.

[0010] Preferably, the grinding mechanism includes: a hydraulic cylinder mounted on the inner bottom surface of the first mounting tube; a grinding sheet mounted on the extended end of the hydraulic cylinder and located directly below the lens fixing mechanism; a cover body mounted on the grinding sheet; two leakage grooves extending through the side of the cover body; and a splash-proof cover mounted on the cover body to prevent the grinding liquid discharged through the leakage groove from splashing.

[0011] Preferably, the driving mechanism comprises: a first motor mounted on the inner top surface of the fixing frame; and a cam fixedly sleeved on a power output shaft of the first motor.

[0012] Preferably, the infusion mechanism includes: a piston cylinder, mounted on the fixed frame, in which a piston plate and a piston rod are slidably connected; a push plate, fixedly connected to one end of the piston rod located outside the piston cylinder and in contact with the side of the cam; a spring, one end of which is connected to the push plate, and the other end of which is connected to the piston cylinder; an infusion tube, one end of which is connected to the piston cylinder, and the other end of which is connected to the cover body; a liquid extraction tube, one end of which is connected to the piston cylinder, and the other end of which is connected to the second mounting cylinder.

[0013] Preferably, the lens fixing mechanism includes: a fixing cover, mounted on the power output shaft of the first motor; a plurality of mounting plates, equidistantly mounted in the fixing cover; a plurality of limit seats, respectively mounted on the top surfaces of the plurality of mounting plates; a plurality of racks, respectively slidably connected to the plurality of limit seats; a plurality of clamping seats, respectively mounted on one end of the plurality of racks close to the center of the fixing cover, for clamping the lenses; a plurality of gear columns, all rotatably connected to the inner top surface of the fixing cover, and respectively meshingly connected to the plurality of racks; a second motor, mounted on the inner top surface of the fixing cover; a gear ring, fixedly connected to the power output shaft of the second motor, and meshingly connected to the plurality of gear columns.

[0014] Preferably, the grinding equipment for lens processing further includes a control system, and the control system includes: a data acquisition module for acquiring comprehensive data information of the grinding equipment, where the comprehensive data information includes wear degree data of the grinding sheet, thickness difference data, hardness data of the lens, and pressure data; a data analysis module for generating a rotational speed influence coefficient according to the comprehensive data information and judging and generating corresponding rotational speed levels according to the rotational speed influence coefficient; a data acquisition module for acquiring a historical training data set of the grinding equipment, where the historical training data set includes comprehensive grinding influence data and grinding duration, and the comprehensive grinding influence data includes the comprehensive data information and rotational speed data of the first motor; a time prediction module for training and predicting a machine learning model for the grinding duration based on the historical training data set, acquiring real-time comprehensive grinding influence data, and inputting the acquired real-time comprehensive grinding influence data into the trained machine learning model to predict the grinding duration.

[0015] Preferably, the rotational speed influence coefficient is obtained through weighted calculation by the wear degree of the grinding sheet, the thickness difference, the hardness of the lens, and the pressure.

[0016] Preferably, the rotational speed levels are generated as follows: The rotational speed levels include a first-level rotational speed, a second-level rotational speed, and a third-level rotational speed, where the first-level rotational speed, the second-level rotational speed, and the third-level rotational speed increase in sequence; The rotational speed levels are generated as follows: The rotational speed levels include a first-level rotational speed, a second-level rotational speed, and a third-level rotational speed, where the first-level rotational speed, the second-level rotational speed, and the third-level rotational speed increase in sequence; The preset threshold range of the rotational speed influence coefficient is Zs1, Zs2, and Zs1 < Zs2; If Zs ≤ Zs1, at this time, the data analysis module generates a first-level rotational speed; If Zs2 ≥ Zs > Zs1, at this time, the data analysis module generates a second-level rotational speed; If Zs > Zs2, at this time, the data analysis module generates a third-level rotational speed.

[0017] Preferably, the training method of the machine learning model for predicting the grinding duration includes: converting the acquired comprehensive grinding influence data into a corresponding set of feature vectors; using each set of feature vectors as the input of the machine learning model, and the machine learning model takes the grinding duration corresponding to each set of comprehensive grinding influence data as the output, takes the actual grinding duration corresponding to each set of comprehensive grinding influence data as the prediction target, and takes minimizing the loss function value of the machine learning model as the training target; stopping training when the loss function value of the machine learning model is less than or equal to the preset target loss value; The machine learning model can be one of models such as SVM regression, random forest regression, or neural network regression.

[0018] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are:

[0019] 1. The lens processing grinding equipment of the present invention is provided with a liquid receiving mechanism and a liquid infusion mechanism. When the liquid infusion mechanism is in operation, the grinding liquid in the liquid receiving mechanism is transported to the grinding mechanism, and the grinding liquid in the grinding mechanism flows back to the liquid receiving mechanism, so that the grinding liquid can be recycled, which greatly reduces the waste of the grinding liquid and reduces the processing cost.

[0020] 2. The lens fixing mechanism of the present invention is equipped with a fixing cover, a mounting plate, a limit seat, a rack, a slide groove, a clamping seat, a vertical rod, a gear column, a second motor and a gear ring. By adopting a gear rack transmission method and driven by the second motor, it can simultaneously control multiple clamping seats to clamp the lenses. The operation is simple and the fixing effect is stable.

[0021] 3. The grinding mechanism of the present invention can effectively prevent the splashing of grinding liquid during the grinding process by providing a cover body, a liquid leakage groove and a splash-proof sleeve, thereby maintaining a clean working environment and facilitating the recovery and reuse of the grinding liquid.

[0022] 4. The control system in the present invention integrates data collection, analysis and prediction functions, and can automatically adjust the grinding parameters according to the real-time collected data to realize intelligent control of the grinding process, which not only improves the grinding accuracy, but also reduces the need for manual intervention and improves work efficiency; by optimizing the grinding parameters and accurately controlling the grinding time, the control system can also reduce the energy consumption of the equipment and reduce the material waste caused by insufficient or excessive grinding, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A three-dimensional diagram of a grinding device for lens processing in the present invention;

[0025] Figure 2 It is a three-dimensional diagram of the lens processing grinding device of the present invention when the fixing frame is missing;

[0026] Figure 3 is a three-dimensional diagram of the fixing frame of the present invention;

[0027] Figure 4 It is a schematic diagram of the internal structure of the first installation tube and the second installation tube in the present invention;

[0028] Figure 5 An exploded view of the grinding mechanism of the present invention;

[0029] Figure 6 is a three-dimensional diagram of the lens fixing mechanism of the present invention;

[0030] Figure 7 is an exploded view of the lens fixing mechanism of the present invention;

[0031] Figure 8 It is a control system module diagram in the present invention;

[0032] Reference numerals: 100, fixing frame; 101, mounting frame; 110, driving mechanism; 111, first motor; 112, cam; 120, lens fixing mechanism; 121, fixing cover; 1211, mounting plate; 122, limiting seat; 123, rack; 124, slide; 125, clamping seat; 126, vertical rod; 127, gear column; 128, second motor; 129, gear ring; 130, liquid contact Mechanism; 131, first mounting cylinder; 132, through groove; 133, second mounting cylinder; 134, filter cylinder; 135, discharge pipe; 140, grinding mechanism; 141, hydraulic cylinder; 142, grinding sheet; 143, cover body; 144, leakage groove; 145, splash-proof sleeve; 150, infusion mechanism; 151, piston cylinder; 152, push plate; 153, spring; 154, infusion tube; 155, extraction tube. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1

[0035] like Figure 1-Figure 3 As shown, a grinding device for lens processing includes a fixing frame 100, a driving mechanism 110, a lens fixing mechanism 120, a liquid receiving mechanism 130, a grinding mechanism 140 and a liquid infusion mechanism 150. A mounting frame 101 is mounted on the inner bottom surface of the fixing frame 100, and the driving mechanism 110 is mounted on the inner top surface of the fixing frame 100; the lens fixing mechanism 120 is mounted on the driving mechanism 110, and the lens fixing mechanism 120 is used to clamp and fix the lens; the liquid receiving mechanism 130 is mounted on the fixing frame 100, and the liquid receiving mechanism 130 is used to contain grinding liquid; the grinding mechanism 140 is mounted in the liquid receiving mechanism 130, and the grinding mechanism 140 is used to grind the lens; the liquid infusion mechanism 150 is mounted on the fixing frame 100, and the liquid infusion mechanism 150 is used to transport the grinding liquid in the liquid receiving mechanism 130 to the grinding mechanism 140.

[0036] Specifically, the lens to be ground is clamped and fixed by the lens fixing mechanism 120, and then the height of the grinding mechanism 140 is adjusted to make the grinding mechanism 140 contact the lens, and then the driving mechanism 110 is started to drive the lens fixing mechanism 120 and the lens to rotate, so that the grinding mechanism 140 grinds the lens. When the driving mechanism 110 is running, the infusion mechanism 150 will also start to run, and the infusion mechanism 150 will transport the grinding liquid in the second mounting cylinder 133 to the grinding mechanism 140. The addition of the grinding liquid facilitates improving the grinding efficiency and grinding quality of the lens.

[0037] like Figure 1 , Figure 2 and Figure 4 As shown, the liquid receiving mechanism 130 includes a first mounting cylinder 131, a plurality of through grooves 132, a second mounting cylinder 133, a filter cylinder 134 and a discharge pipe 135. The top of the first mounting cylinder 131 is open; the center position of the inner bottom surface of the first mounting cylinder 131 is convex upward, and a plurality of through grooves 132 are equidistantly arranged on the bottom surface of the first mounting cylinder 131; the top of the second mounting cylinder 133 is open, the second mounting cylinder 133 is mounted on the inner bottom surface of the fixing frame 100, and the second mounting cylinder 133 is connected to the bottom surface of the first mounting cylinder 131; the filter cylinder 134 is fixedly mounted on the inner bottom surface of the second mounting cylinder 133, the top surface of the filter cylinder 134 is connected to the bottom surface of the first mounting cylinder 131, and the discharge pipe 135 is mounted on the side of the second mounting cylinder 133, and a sealing cover is threadedly connected to the discharge pipe 135. By setting the discharge pipe 135, it is convenient to take out the waste grinding liquid in the second mounting cylinder 133.

[0038] Specifically, by adding grinding liquid into the first installation cylinder 131 , the grinding liquid will flow into the second installation cylinder 133 along the through groove 132 , and the filter cylinder 134 in the second installation cylinder 133 will filter the grinding liquid and block the debris carried in the grinding liquid outside the filter cylinder 134 .

[0039] like Figure 4 and Figure 5 As shown, the grinding mechanism 140 includes a hydraulic cylinder 141, a grinding sheet 142, a cover 143, two liquid leakage grooves 144 and a splash-proof cover 145. The hydraulic cylinder 141 is mounted on the inner bottom surface of the first mounting cylinder 131; the grinding sheet 142 is mounted on the extended end of the hydraulic cylinder 141, and the grinding sheet 142 is located directly below the lens fixing mechanism 120; the cover 143 is sleeved on the grinding sheet 142; the two liquid leakage grooves 144 are penetrated and opened on the side of the cover 143; the splash-proof cover 145 is mounted on the cover 143, and the splash-proof cover 145 is located on the outside of the two liquid leakage grooves 144, and the splash-proof cover 145 is used to prevent the grinding liquid discharged from the liquid leakage grooves 144 from splashing.

[0040] Specifically, when the grinding sheet 142 grinds the lens, the grinding liquid is transported into the cover body 143, thereby facilitating improving the grinding efficiency and the grinding quality of the lens, and the grinding liquid in the cover body 143 will be discharged through the leakage groove 144, and the splash-proof cover 145 can prevent the grinding liquid discharged from the leakage groove 144 from splashing, so that the grinding liquid falls into the first mounting cylinder 131, and then enters the second mounting cylinder 133 through the through groove 132, and the filter cylinder 134 in the second mounting cylinder 133 will filter the grinding liquid and block the debris carried by the grinding liquid outside the filter cylinder 134.

[0041] like Figure 1 and Figure 2 As shown, the driving mechanism 110 includes a first motor 111 and a cam 112. The first motor 111 is mounted on the inner top surface of the fixing frame 100; the cam 112 is fixedly sleeved on the power output shaft of the first motor 111.

[0042] like Figure 2 and Figure 4 As shown, the infusion mechanism 150 includes a piston cylinder 151, a push plate 152, a spring 153, an infusion tube 154 and a liquid extraction tube 155. The piston cylinder 151 is mounted on the mounting frame 101, and a piston sheet and a piston rod are slidably connected in the piston cylinder 151; the push plate 152 is fixedly connected to one end of the piston rod located outside the piston cylinder 151, and the push plate 152 contacts the side of the cam 112; one end of the spring 153 is connected to the push plate 152, and the other end of the spring 153 is connected to the piston cylinder 151; one end of the infusion tube 154 is connected to the piston cylinder 151, and the other end of the infusion tube 154 is connected to the cover body 143; one end of the liquid extraction tube 155 is connected to the piston cylinder 151, and the other end of the liquid extraction tube 155 is connected to the second mounting cylinder 133, and the end of the liquid extraction tube 155 located in the mounting cylinder is located in the filter cylinder 134. One-way valves are installed in both the infusion tube 154 and the extraction tube 155, so that the grinding liquid in the piston cylinder 151 can only flow into the cover body 143 through the infusion tube 154, and the grinding liquid in the second installation cylinder 133 can only be transported to the piston cylinder 151 through the extraction tube 155.

[0043] Specifically, when the push plate 152 is pushed, the push plate 152 will push the piston rod and the piston plate to move, and then the grinding liquid in the piston cylinder 151 will be transported to the cover body 143 through the infusion tube 154; when the push plate 152 is released, under the influence of the rebound force of the spring 153, the spring 153 will push the push plate 152 to move, and then drive the piston rod and the piston plate to move, and then the grinding liquid in the second mounting cylinder 133 will be pumped into the piston cylinder 151 through the pumping tube 155. By reciprocatingly pushing the push plate 152 and releasing the push plate 152, the piston cylinder 151 will continuously transport the grinding liquid in the second mounting cylinder 133 to the cover body 143.

[0044] like Figure 6 and Figure 7 As shown, the lens fixing mechanism 120 includes a fixing cover 121, a plurality of mounting plates 1211, a plurality of limiting seats 122, a plurality of racks 123, a plurality of clamping seats 125, a plurality of gear columns 127, a second motor 128 and a gear ring 129. The center of the top surface of the fixing cover 121 is mounted on the power output shaft of the first motor 111; a plurality of mounting plates 1211 are equidistantly mounted in the fixing cover 121; a plurality of limiting seats 122 are respectively mounted on the top surfaces of the plurality of mounting plates 1211; a plurality of racks 123 are all provided with sliding grooves 124, and the racks 123 are slidably connected with the limiting seats 122 through the sliding grooves 124.

[0045] Multiple clamping seats 125 are respectively installed on one end of multiple racks 123 close to the center of the fixed cover 121, and the clamping seats 125 are used to clamp the lenses; vertical rods 126 are installed on multiple gear columns 127, and the vertical rods 126 are rotatably connected to the inner top surface of the fixed cover 121, and the multiple gear columns 127 are respectively meshed and connected with the multiple racks 123; the second motor 128 is installed on the inner top surface of the fixed cover 121; the gear ring 129 is fixedly connected to the power output shaft of the second motor 128, and the gear ring 129 is meshed and connected with multiple gear columns 127.

[0046] Specifically, by placing the lens to be ground between multiple clamping seats 125, and then starting the second motor 128, the power output shaft of the second motor 128 drives the gear ring 129 to rotate, and then drives the multiple gear columns 127 to rotate at the same time. When the multiple gear columns 127 rotate, they will engage and drive the multiple racks 123 to move, and then drive the multiple clamping seats 125 to move toward the center direction of the fixed cover 121 at the same time, so that the multiple clamping seats 125 cooperate to clamp and fix the lens.

[0047] Working principle: During specific use, by adding the grinding liquid into the first installation cylinder 131 , the grinding liquid will enter the second installation cylinder 133 through the through groove 132 .

[0048] The lens to be ground is then placed between the multiple clamping seats 125, and then the second motor 128 is started so that the power output shaft of the second motor 128 drives the gear ring 129 to rotate, thereby driving the multiple gear columns 127 to rotate simultaneously. When the multiple gear columns 127 rotate, they will engage and drive the multiple racks 123 to move, thereby driving the multiple clamping seats 125 to move toward the center direction of the fixed cover 121 at the same time, so that the multiple clamping seats 125 cooperate to clamp and fix the lens.

[0049] Then, the hydraulic cylinder 141 is activated so that the hydraulic cylinder 141 drives the grinding sheet 142 to move upward, thereby making the top surface of the grinding sheet 142 contact with the bottom surface of the lens.

[0050] Then, by starting the first motor 111 , the power output shaft of the first motor 111 drives the lens fixing mechanism 120 to rotate, thereby driving the lens to rotate, so that the grinding sheet 142 grinds the lens.

[0051] When the lens is being ground, the power output shaft of the first motor 111 will also drive the cam 112 to rotate. With the cooperation of the rotating cam 112 and the spring 153, the piston cylinder 151 will continuously extract the grinding liquid in the second mounting cylinder 133 through the extraction tube 155, and transport the grinding liquid to the cover body 143 through the infusion tube 154. By adding grinding liquid, the grinding efficiency of the lens can be improved and the grinding quality can be improved.

[0052] As the amount of grinding liquid increases, the grinding liquid in the cover body 143 will be discharged through the leakage groove 144. The splash-proof cover 145 can prevent the grinding liquid discharged from the leakage groove 144 from splashing, causing the grinding liquid to fall into the first mounting cylinder 131. The grinding liquid will enter the second mounting cylinder 133 through the through groove 132. The filter cylinder 134 in the second mounting cylinder 133 will filter the grinding liquid and block the debris carried by the grinding liquid outside the filter cylinder 134. The extraction tube 155 will extract the grinding liquid in the filter cylinder 134, so that the grinding liquid can be reused, avoiding the waste of grinding liquid and reducing the processing cost of lens grinding.

[0053] Example 2

[0054] like Figure 1 and Figure 8 As shown, when other parts are the same as those in Example 1, the difference between this embodiment and Example 1 is that a grinding device for lens processing also includes a control system, and the control system is used to control the grinding time.

[0055] The control system includes a data acquisition module, a data analysis module, a data acquisition module and a time prediction module. The modules are connected by wired / wireless means to realize data transmission.

[0056] A data collection module, used to collect comprehensive data information of the grinding equipment, wherein the comprehensive data information includes wear degree data, thickness difference data, hardness data and pressure data of the grinding sheet 142;

[0057] Specifically, the wear degree data of the grinding sheet 142 is the difference between the current thickness and the initial thickness of the grinding sheet 142. The current thickness of the grinding sheet 142 can be measured by a thickness sensor or a non-contact laser thickness gauge. The thickness difference data refers to the difference between the initial thickness and the target thickness of the lens. The initial thickness can be measured by a thickness gauge or a micrometer, and the target thickness is a custom setting. The hardness data of the lens is measured by a hardness tester. The pressure data refers to the pressure on the lens when it is ground. The pressure data can be measured by a pressure sensor.

[0058] The data analysis module generates a speed influence coefficient according to the comprehensive data information, and generates a corresponding speed level according to the speed influence coefficient;

[0059] The speed influence coefficient is generated as follows:

[0060]

[0061] Wherein, Zs is the rotation speed influence coefficient, Ms is the wear degree of the grinding sheet 142, Hd is the thickness difference, Yd is the hardness of the lens, and Yl is the pressure on the lens when being ground. and are all weight coefficients, which are determined by technicians in this field according to specific application requirements. and All are greater than 0;

[0062] The grinding sheet 142 will gradually wear out as the usage time increases. The greater the degree of wear, the lower its cutting ability, and the first motor 111 needs to provide more power to maintain the same grinding effect.

[0063] The thickness difference affects the continuous working ability of the first motor 111 during the grinding process. The smaller the thickness difference, the less the corresponding material removal amount, the relatively smaller the load, and the first motor 111 can grind at a higher speed; the larger the thickness difference, the more the corresponding material removal amount, the load of the first motor 111 increases, and the speed needs to be reduced to avoid overheating or overloading, so as to ensure a uniform and stable grinding effect;

[0064] The hardness of the lens determines the difficulty of material removal. The higher the hardness, the greater the load of the first motor 111. The first motor 111 needs to reduce the speed to maintain a stable load and avoid damage to the lens, and vice versa.

[0065] When grinding the lens, the greater the pressure on the lens, the greater the friction and cutting force will be, and the corresponding load of the first motor 111 will also increase, so the first motor 111 needs to reduce the speed to maintain stable operation, and vice versa.

[0066] It should be noted that the formulas involved in the above-mentioned are all calculated by removing dimensions and taking numerical values. They are a formula that is closest to the actual situation obtained by collecting a large amount of data and performing software simulation. The weight coefficients in the formulas and the various preset thresholds in the analysis process are set by technical personnel in this field according to actual conditions or obtained by simulating a large amount of data; the size of the weight coefficient is to quantify each parameter to obtain a specific value for subsequent comparison. The size of the weight coefficient depends on the amount of sample data and the corresponding processing coefficients initially set by technical personnel in this field for each group of sample data; as long as it does not affect the proportional relationship between the parameters and the quantized values.

[0067] The speed levels are generated as follows:

[0068] The speed levels include a first speed, a second speed and a third speed, wherein the first speed, the second speed and the third speed increase in sequence, and the first speed, the second speed and the third speed are all speeds of the first motor 111;

[0069] The threshold range of the preset speed influence coefficient is Zs1, Zs2, Zs1 <Zs2;

[0070] If Zs≤Zs1, at this time, the data analysis module generates a first-level speed;

[0071] If Zs2≥Zs>Zs1, at this time, the data analysis module generates a secondary speed;

[0072] If Zs>Zs2, at this time, the data analysis module generates a third-level speed.

[0073] Among them, Zs1 and Zs2 are determined by those skilled in the art according to specific application requirements.

[0074] Exemplarily, the speeds of the first motor 111 corresponding to the first speed, the second speed and the third speed are 800 rpm, 1000 rpm and 1200 rpm respectively; the speed of the first motor 111 can also be customized according to specific circumstances; the speed of the first motor 111 is controlled according to the corresponding speed level.

[0075] A data acquisition module is used to collect a historical training data set of the grinding equipment, wherein the historical training data set includes grinding comprehensive impact data and grinding time; wherein the grinding comprehensive impact data includes comprehensive data information and speed data of the first motor 111, and the speed data of the first motor 111 can be obtained by a Hall effect sensor;

[0076] The grinding time refers to the time from when the grinding sheet 142 starts grinding the lens to when the grinding of the lens is completed. The grinding time can be obtained by a timer.

[0077] The time prediction module trains a machine learning model to predict grinding time based on a historical training data set, collects real-time grinding comprehensive impact data, and inputs it into the trained machine learning model to predict grinding time;

[0078] The training method of the machine learning model for predicting grinding time includes:

[0079] Convert the collected grinding comprehensive impact data into a corresponding set of feature vectors;

[0080] Each group of feature vectors is used as the input of the machine learning model. The machine learning model takes the grinding time corresponding to each group of comprehensive grinding impact data as the output, the actual grinding time corresponding to each group of comprehensive grinding impact data is used as the prediction target, and minimizing the loss function value of the machine learning model is used as the training target; training is stopped when the loss function value of the machine learning model is less than or equal to the preset target loss value.

[0081] The machine learning model may be one of the models such as SVM regression, random forest regression or neural network regression.

[0082] The machine learning model loss function value is the mean square error;

[0083] Mean square error is one of the commonly used loss functions. Minimization is used as the goal to train the model so that the machine learning model better fits the data, thereby improving the performance and accuracy of the model;

[0084] In the loss function, MSE is the loss function value of the machine learning model, x is the feature vector group number; m is the number of feature vector groups; y is the number of feature vector groups; x is the grinding time predicted by the x-th group of feature vectors, is the actual grinding time corresponding to the xth group of feature vectors;

[0085] Other model parameters of the machine learning model, target loss value, optimization algorithm, training set test set validation set ratio, and loss function optimization are all achieved through actual engineering implementation and continuous experimental tuning.

[0086] The running time of the first motor 111 is controlled according to the predicted grinding time; when the running time of the first motor 111 is the same as the predicted grinding time, the first motor 111 is powered off and stopped.

[0087] In summary, the control system integrates data acquisition, analysis and prediction functions, and can automatically adjust the grinding parameters according to the real-time collected data to realize intelligent control of the grinding process. It not only improves the grinding accuracy, but also reduces the need for manual intervention and improves work efficiency.

[0088] By accurately predicting the grinding time, the control system can ensure that the lens is processed under the best grinding conditions, thereby improving grinding efficiency and quality, which is conducive to reducing scrap rate and improving product qualification rate.

[0089] By optimizing grinding parameters and precisely controlling grinding time, the control system can also reduce the energy consumption of the equipment and reduce material waste caused by insufficient or excessive grinding, thereby reducing production costs.

[0090] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0091] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A grinding device for lens processing, characterized in that: include: Fixed frame (100); A driving mechanism (110) mounted on the inner top surface of the fixing frame (100); A lens fixing mechanism (120), installed on the driving mechanism (110) and used for clamping and fixing the lens; A liquid receiving mechanism (130), mounted on the fixing frame (100) and used for containing the grinding liquid; A grinding mechanism (140), installed in the liquid contacting mechanism (130), and used for grinding the lens; The liquid infusion mechanism (150) is installed on the fixing frame (100) and is used to transport the grinding liquid in the liquid receiving mechanism (130) to the grinding mechanism (140).

2. The lens processing grinding device according to claim 1, characterized in that: The liquid contact mechanism (130) comprises: A first installation cylinder (131) having an opening at the top; A plurality of through grooves (132) are equidistantly arranged on the bottom surface of the first mounting tube (131); A second installation tube (133) is installed on the inner bottom surface of the fixing frame (100) and connected to the bottom surface of the first installation tube (131); The filter cylinder (134) is fixedly mounted on the inner bottom surface of the second mounting cylinder (133).

3. The lens processing grinding device according to claim 2, characterized in that: The grinding mechanism (140) comprises: A hydraulic cylinder (141) mounted on the inner bottom surface of the first mounting cylinder (131); A grinding sheet (142) is mounted on the extended end of the hydraulic cylinder (141) and is located directly below the lens fixing mechanism (120); A cover body (143) is sleeved on the grinding sheet (142); Two liquid leakage grooves (144) are provided through the side of the cover body (143); The splash-proof sleeve (145) is installed on the cover body (143) and is used to prevent the grinding liquid discharged through the leakage groove (144) from splashing.

4. The lens processing grinding device according to claim 3, characterized in that: The driving mechanism (110) comprises: A first motor (111) is mounted on the inner top surface of the fixing frame (100); The cam (112) is fixedly sleeved on the power output shaft of the first motor (111).

5. The lens processing grinding device according to claim 4, characterized in that: The infusion mechanism (150) comprises: A piston cylinder (151) is mounted on the fixing frame (100), and a piston sheet and a piston rod are slidably connected therein; A push plate (152) is fixedly connected to one end of the piston rod located outside the piston cylinder (151) and is in contact with a side surface of the cam (112); A spring (153), one end of which is connected to the push plate (152), and the other end of which is connected to the piston cylinder (151); An infusion tube (154), one end of which is connected to the piston cylinder (151), and the other end of which is connected to the cover body (143); A liquid extraction tube (155) has one end connected to the piston cylinder (151) and the other end connected to the second mounting cylinder (133).

6. The lens processing grinding device according to claim 5, characterized in that: The lens fixing mechanism (120) comprises: A fixed cover (121) mounted on the power output shaft of the first motor (111); A plurality of mounting plates (1211) are equidistantly mounted inside the fixing cover (121); A plurality of limit seats (122) are respectively mounted on the top surfaces of the plurality of mounting plates (1211); A plurality of racks (123) are slidably connected to the plurality of limit seats (122) respectively; A plurality of clamping seats (125), respectively mounted on one end of the plurality of racks (123) close to the center of the fixed cover (121), for clamping the lens; A plurality of gear columns (127) are all rotatably connected to the inner top surface of the fixed cover (121) and are respectively meshed with the plurality of racks (123); A second motor (128) is mounted on the inner top surface of the fixed cover (121); The gear ring (129) is fixedly connected to the power output shaft of the second motor (128) and meshingly connected to the plurality of gear columns (127).

7. The lens processing grinding device according to claim 4, characterized in that: Also included is a control system, the control system comprising: A data collection module, used for collecting comprehensive data information of the grinding equipment, wherein the comprehensive data information includes wear degree data, thickness difference data, hardness data and pressure data of the grinding sheet (142); The data analysis module generates a speed influence coefficient according to the comprehensive data information, and generates a corresponding speed level according to the speed influence coefficient; A data acquisition module, used for collecting a historical training data set of the grinding equipment, the historical training data set including grinding comprehensive impact data and grinding time, the grinding comprehensive impact data including comprehensive data information and rotation speed data of the first motor (111); The time prediction module trains a machine learning model to predict the grinding time based on the historical training data set, collects real-time grinding comprehensive impact data, and inputs it into the trained machine learning model to predict the grinding time.

8. The lens processing grinding device according to claim 7, characterized in that: The rotation speed influence coefficient is obtained by weighted calculation of the degree of wear of the grinding sheet (142), the thickness difference, the hardness and the pressure of the lens.

9. The lens processing grinding device according to claim 8, characterized in that: The speed levels are generated as follows: The speed levels include primary speed, secondary speed and tertiary speed, wherein the primary speed, secondary speed and tertiary speed increase in sequence; The threshold range of the preset speed influence coefficient is Zs1, Zs2, Zs1 <Zs2; If Zs≤Zs1, at this time, the data analysis module generates a first-level speed; If Zs2≥Zs>Zs1, at this time, the data analysis module generates a secondary speed; If Zs>Zs2, at this time, the data analysis module generates a third-level speed.

10. The lens processing grinding device according to claim 9, characterized in that: The training method of the machine learning model for predicting grinding time includes: Convert the collected grinding comprehensive impact data into a corresponding set of feature vectors; Each group of feature vectors is used as the input of the machine learning model, the machine learning model takes the grinding time corresponding to each group of grinding comprehensive impact data as the output, the actual grinding time corresponding to each group of grinding comprehensive impact data is used as the prediction target, and minimizing the loss function value of the machine learning model is used as the training target; when the loss function value of the machine learning model is less than or equal to the preset target loss value, the training is stopped; the machine learning model can be one of the models such as SVM regression, random forest regression or neural network regression.

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