A system and method for controlling the dressing of a crystal gauge

Abstract

The application discloses a kind of crystal measure grinding control system and method, system includes work order reading mechanism, grinder control mechanism and size automatic measurement mechanism;Work order reading mechanism is used to identify and obtain the initial data of crystal measure in crystal measure processing work order and grinding processing parameter;Grinder control mechanism calculates the grinding circle number information of each time grinding crystal measure and corresponding crystal measure size threshold value;According to grinding circle number information, control grinder to grind crystal measure, stop grinding crystal measure after reaching corresponding grinding circle number information;Size automatic measurement mechanism detects crystal measure, obtains crystal measure size data and the crystal measure grinding amount data of each time grinding crystal measure;Grinder control mechanism compares current crystal measure size data with corresponding crystal measure size threshold value, and prompts when detecting that crystal measure reaches corresponding crystal measure size threshold value;The application has the effect of improving the crystal measure product quality stability of grinder grinding processing, improves yield.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of quartz wafer processing, in particular to a crystal weight grinding control method and system. BACKGROUND

[0002] In the quartz wafer processing process, the processing of the size of the quartz wafer is to arrange multiple quartz wafers into a neat group, then use adhesive to bond into a crystal weight, and then grind the size of the crystal weight through a grinding machine, so that the ground crystal weight meets the corresponding standard process production requirements.

[0003] With the development of society, the size precision requirement of the ground crystal weight is also higher and higher, so that the grinding amount of the ground crystal weight and the grinding number of times need to be adjusted and calculated multiple times in the process of grinding the crystal weight by the grinding machine, and at present, manual calculation and manual setting operation are mostly relied on; the grinding number of times of the grinding machine during grinding is completely dependent on manual setting by the operator, and the professional level and carefulness of the operator are required to be high; after long-time grinding operation, the manual operation is prone to high error rate and many scrap products, so there is a defect that the quality of the ground crystal weight product is unstable and the yield is low, and improvement is urgently needed. SUMMARY

[0004] In order to improve the quality stability of the ground crystal weight product of the grinding machine and improve the yield, the application provides a crystal weight grinding control system and method.

[0005] In the first aspect, the application aims to achieve the following technical solutions:

[0006] A crystal weight grinding control system, comprising: a work order reading mechanism, a grinding machine control mechanism and a size automatic measurement mechanism;

[0007] The work order reading mechanism is used for identifying and acquiring crystal weight initial data and grinding processing parameters in a preset crystal weight processing work order, and the preset crystal weight processing work order is generated according to product process information and to-be-ground processing information of the crystal weight;

[0008] The grinding machine control mechanism calculates the grinding number of times of each time of grinding the crystal weight and the corresponding crystal weight size threshold value based on the crystal weight initial data and the grinding processing parameters;

[0009] The grinding machine control mechanism controls the grinding machine to grind the crystal weight to a set crystal weight size according to the grinding number of times, and stops grinding the crystal weight and counts the total grinding number of times of the crystal weight after the corresponding grinding number of times is reached;

[0010] The size automatic measurement mechanism detects the crystal weight, obtains and records the current crystal weight size data and the crystal weight grinding amount data of each time of grinding the crystal weight; and the grinding machine control mechanism compares the current crystal weight size data with the corresponding crystal weight size threshold, and prompts when the size automatic measurement mechanism detects that the crystal weight reaches the corresponding crystal weight size threshold.

[0011] By adopting the technical scheme, the work order reading mechanism, the grinding machine control mechanism and the size automatic measurement mechanism form an automatic integrated control crystal weight grinding control system, which effectively avoids product scrapping caused by human factors, and greatly reduces the control cost of crystal weight grinding operation; specifically, in actual workshop production process, in the face of a large number of crystal weight grinding processing requirements, in order to facilitate systematic management, before crystal weight grinding processing, the crystal weight processing work order to be ground is generated based on the current crystal weight, at this time, the work order reading mechanism is used to automatically read the product process information and the to-be-ground information on the crystal weight processing work order, which effectively reduces the situation of using the wrong grinding machine model for processing and missing the process by human; then the grinding machine control mechanism generates the corresponding grinding circle number information and the final crystal weight size threshold (the crystal weight size threshold is the normal size error of the crystal weight after grinding processing to meet the current process requirements) based on the current crystal weight.

[0012] After the crystal weight is placed in the grinding position of the grinding machine, the grinding machine control mechanism grinds the crystal weight based on the correct grinding circle number information, and stops processing when the actual grinding circle number reaches the correct grinding circle number, which effectively avoids the problems of manual operation error or incorrect grinding circle number setting by using automatic control, greatly improves the grinding precision, and is beneficial to improve the quality stability and the pass rate of the crystal weight product.

[0013] Further, the crystal weight is placed in the detection position of the size automatic measurement mechanism for automatic size detection of the crystal weight, to obtain and record the current crystal weight size data and the crystal weight grinding amount data of each time of grinding the crystal weight, so as to realize comprehensive and complete recording of the crystal weight processing crystal weight processing history information, which is beneficial to realize standardized operation; the grinding machine grinding operation and the automatic size measurement work are repeated until the current crystal weight size data of the crystal weight is within the corresponding crystal weight size threshold, that is, the crystal weight meets the process standard size requirement at this time, which is beneficial to prompt the operator to take away the ground crystal weight in time, and improve the production efficiency; the operator of the present application only needs to place the crystal weight on the grinding machine and automatically detect it after each grinding, which is beneficial to reduce the manual measurement error; and the purpose of improving the quality stability of the crystal weight product ground by the grinding machine and improving the yield is achieved.

[0014] In a preferred example of the present application, the size automatic measurement mechanism comprises a measurement base, an automatic measurement module and a plurality of positioning protrusions; the measurement end of the automatic measurement module is located at the top of the measurement base, a plurality of the positioning protrusions are arranged at intervals in the measurement area of the measurement base, and the heights of the plurality of the positioning protrusions are flush; the crystal weight is placed on the top of the plurality of the positioning protrusions, the automatic measurement module automatically measures the actual size data of the crystal weight to obtain current crystal weight size data, and the automatic measurement module sends the current crystal weight size data to the grinder control mechanism.

[0015] By adopting the above technical solution, the size automatic measurement mechanism is improved. Since the measurement base of the existing measurement device for measuring the size of the crystal weight is basically in surface contact, air pockets exist between the contact surfaces of the measurement base and the crystal weight when the crystal weight is placed for measurement, resulting in measurement errors. Therefore, in order to ensure the accuracy of the measurement results, the crystal weight must be cleaned and wiped dry before measurement, and the crystal weight must be pressed by hand and moved repeatedly to expel air pockets before measurement, which greatly reduces the measurement efficiency. In the present application, positioning protrusions are added to the measurement base of the size automatic measurement mechanism, and the crystal weight is measured by being placed on the top of the plurality of positioning protrusions (at this time, the crystal weight and the positioning protrusions are in point contact), so that the crystal weight can be simply cleaned before measurement, without the need to wipe the crystal weight or move to expel air pockets, thereby greatly improving the measurement efficiency while ensuring the measurement accuracy.

[0016] In a preferred example of the present application, the positioning protrusions are three in number, and the positioning protrusions are made of tungsten steel.

[0017] By adopting the above technical solution, the measurement base adopts a three-point contact mode, which facilitates the installation of the positioning protrusions on the measurement base, and the tungsten steel material is durable and resistant to wear, thereby facilitating the maintenance of the accuracy of the measurement results in long-term and multiple measurements.

[0018] In a preferred example of the present application, the grinder control mechanism comprises a visual display terminal and a plurality of different control buttons, and the grinder control mechanism controls the grinder and the size automatic measurement mechanism in response to the pressing operation of the plurality of control buttons; the grinder control mechanism is connected to a plurality of models of grinders, each of the grinders is associated with a product identifier; the grinder control mechanism detects the running states of the plurality of grinders to obtain grinder running state information, and displays the grinder running state information on the visual display terminal; when the grinder control mechanism obtains the crystal weight initial data and the grinding processing parameters from the work order reading mechanism, the grinder control mechanism selects at least one of the grinders for grinding processing and correspondingly generates a processing process operation list, and the processing process operation list comprises an operation flow and operation content corresponding to the crystal weight to be ground.

[0019] By adopting the technical scheme, the grinding control mechanism displays the identification data of the work order reading mechanism, the measurement data of the size automatic measurement mechanism, and the operation process of the grinding machine through the visual display terminal, so that the intuitive and clear grinding process of the crystal bar is generated. Meanwhile, the grinding control mechanism is also provided with a control button, and the user controls the grinding control mechanism, the grinding machine and the size automatic measurement mechanism through the control button, which is relatively convenient to operate. Further, the grinding control mechanism can also control multiple types of grinding machines at the same time, and different types of grinding machines can meet the grinding requirements of different grinding accuracies, or a grinding machine of a certain type can meet the grinding processing requirements of multiple accuracies at the same time. The control effect of "one belt and multiple machines" is realized, which is beneficial to save the control cost, and different types of grinding machines can realize different degrees of grinding of the crystal bar, such as coarse grinding, medium grinding, fine grinding and precision grinding. Based on the grinding process and grinding size requirements of different crystal bars, the correct type of grinding machine is selected for grinding, which is beneficial to ensure the yield.

[0020] Further, when multiple grinding machines are applied together, the grinding machine running state information includes standby, running, stop measuring and fault maintenance, the grinding control mechanism selects the grinding machine capable of undertaking the grinding operation to perform the crystal bar grinding operation, and generates a processing process operation list based on the selected grinding machine and the crystal bar initial data and grinding processing parameters of the crystal bar to be ground. When the operator moves the crystal bar for size measurement and grinding, the operator only needs to perform the corresponding operation according to the processing process operation list, so that the crystal bar grinding process is simple and easy to understand, and is friendly to novice operators. Therefore, the operator can intuitively understand the grinding times of the crystal bar and the operation content of each grinding through the processing process operation list. The entire grinding processing process of the crystal bar can be completed by performing the operation steps based on the processing process operation list, so that the processing operation process is easy to understand, and the problems of objective misjudgment, misrecording, misoperation, non-standard operation and new employee training difficulty are effectively avoided. The grinding operation is simple and easy to operate, which is beneficial to save the control cost.

[0021] In a preferred example of the present application: the grinding control mechanism generates a corresponding number of threshold signals based on the number of grinding laps of the crystal bar each time; the grinding control mechanism is coupled with a start-stop control circuit for controlling the start and stop of the grinding machine, and the start-stop control circuit comprises:

[0022] a number of counting units for detecting and counting the number of laps of the crystal bar ground by the grinding machine and outputting a number of counting signals;

[0023] a signal comparison unit coupled to the number of counting units to receive the number of counting signals, the signal comparison unit compares the number of counting signals with the corresponding number of threshold signals and outputs a comparison signal, the comparison signal includes a first type of level signal and a second type of level signal;

[0024] A switch control unit is coupled to the signal comparison unit and connected in series in a power supply circuit of the grinder to output a switch signal including an on signal and an off signal after receiving the comparison signal; the switch control unit outputs the on signal to control the grinder to start when receiving the first type of level signal, and the switch control unit outputs the off signal to control the grinder to stop when receiving the second type of level signal.

[0025] By adopting the above technical scheme, the start-stop control circuit is used to generate a corresponding number of turns threshold signal based on the number of turns information of each grinding crystal weight, and the grinder control mechanism can generate different number of turns threshold signals one by one based on different grinding number of turns information generated each time, so as to facilitate real-time and convenient automatic control of the start and stop of the grinder.

[0026] Specifically, when the grinder is started, the number of times counting unit of the start-stop control circuit is started and begins to count the number of turns of the grinder grinding the crystal weight to obtain a real-time number of times counting signal, and the signal comparison unit compares the number of times counting signal with the corresponding number of turns threshold signal and outputs two comparison results: the first result is that when the signal comparison unit compares the number of times counting signal to be less than the number of turns threshold signal (i.e., at this time, the actual number of turns of the grinder does not reach the number of turns requirement of the corresponding grinding number of turns information), a first type of level signal is output; the second result is that when the signal comparison unit compares the number of times counting signal to be equal to the number of turns threshold signal (i.e., at this time, the actual number of turns of the grinder reaches the number of turns requirement of the corresponding grinding number of turns information), a second type of level signal is output; the switch control unit outputs an on signal based on the first type of level signal to control the control circuit of the grinder to remain in an on state; or the switch control unit outputs an on signal based on the first type of level signal to control the control circuit of the grinder to be disconnected.

[0027] In a second aspect, the application aims to achieve the following technical scheme:

[0028] A crystal weight grinding control method, characterized in that it is applied to the crystal weight grinding control system described above, and the method comprises:

[0029] Identifying and obtaining the crystal weight initial data and grinding processing parameters in the preset crystal weight processing work order;

[0030] Based on the crystal weight initial data and the grinding processing parameters, the number of turns information of each grinding crystal weight and the corresponding crystal weight size threshold are calculated;

[0031] According to the grinding number of turns information, the crystal weight is ground to a set crystal weight size, and the grinding of the crystal weight is stopped after reaching the corresponding grinding number of turns information, and the total grinding number of the crystal weight is counted;

[0032] detecting actual size information of the crystal to obtain current crystal size data, and comparing the crystal size data detected each time with the crystal size data of the previous time to obtain crystal grinding amount data of the crystal ground each time;

[0033] comparing the current crystal size data with the corresponding crystal size threshold, and prompting when the crystal is detected to reach the corresponding crystal size threshold.

[0034] By adopting the above technical solutions, in the actual workshop production process, in the face of a large number of crystal grinding processing requirements, in order to facilitate systematic management, before the crystal grinding processing, the crystal processing work order to be ground is generated based on the current crystal, at this time, the product process information and the information to be ground on the crystal processing work order are automatically read by using the work order reading mechanism, effectively reducing the situation of using the wrong grinding machine model for processing by human, and missing the process; then the corresponding grinding circle number information and the final crystal size threshold (the crystal size threshold is the normal size error of the crystal after grinding processing to meet the current generated process requirements) are generated based on the current crystal; after the crystal is placed in the grinding position of the grinding machine, the crystal grinding processing work is carried out based on the correct grinding circle number information, and the processing is stopped after the actual grinding circle number reaches the correct grinding circle number, which effectively avoids the problem of manual operation error or incorrect grinding circle number setting by using automatic control, greatly improves the grinding precision, and is beneficial to improve the quality stability and the pass rate of the crystal product.

[0035] Further, the crystal is placed in the detection position of the size automatic measurement mechanism to automatically detect the size of the crystal, to obtain and record the current crystal size data and the crystal grinding amount data of the crystal ground each time, so as to realize comprehensive and complete recording of the crystal processing crystal processing history information, which is beneficial to realize standardized operation; the grinding operation of the grinding machine and the automatic size measurement work are repeated until the current crystal size data of the crystal is within the corresponding crystal size threshold, that is, the crystal meets the process standard size requirement at this time, which is beneficial to prompt the operator to take away the ground crystal in time, and improve the production efficiency; the operator of the present application only needs to place the crystal on the grinding machine and on the size automatic measurement mechanism after each grinding to perform automatic detection, which is beneficial to reduce the manual measurement error; and the purpose of improving the quality stability of the crystal product ground by the grinding machine and improving the yield is realized.

[0036] In a preferred example of the present application: the detection of the actual size information of the crystal to obtain the current crystal size data, and the comparison of the crystal size data detected each time with the crystal size data of the previous time to obtain the crystal grinding amount data of the crystal ground each time, specifically includes:

[0037] detecting actual size information of each wafer in the crystal pallet to obtain current crystal pallet size data, the crystal pallet size data including crystal pallet size data of multiple wafers;

[0038] statistically processing the crystal pallet size data of the multiple wafers in each detection, and calculating mean value and scatter data of the whole crystal pallet;

[0039] comparing the crystal pallet size data of the multiple wafers in each detection with previous crystal pallet size data to obtain crystal pallet grinding amount data of each grinding crystal pallet.

[0040] By adopting the technical scheme, the crystal pallet includes multiple quartz wafer, after each time of grinding by using the grinding machine, actual size information of each wafer is detected and compared when the size automatic measurement mechanism is used for measurement, the whole size change of the grinding machine in each time is obtained through calculation of the mean value data, and the crystal pallet size change amount in the multiple grinding processes is known through the scatter data, and the non-uniformity of the crystal pallet grinding quality is known; the crystal pallet grinding amount data of each grinding crystal pallet is calculated, so that the consistency of the grinding processing quality of the grinding machine on the crystal pallet is analyzed subsequently, and when the crystal pallet grinding amount data abnormally changes, it is characterized that the grinding processing coefficient is abnormal when the grinding machine grinds, and the grinding machine may have a fault, so that maintenance measures can be taken on the grinding machine in time.

[0041] In a preferred example of the present application, after the actual size information of the crystal pallet is detected to obtain current crystal pallet size data, and the crystal pallet size data in each detection is compared with previous crystal pallet size data to obtain crystal pallet grinding amount data of each grinding crystal pallet, the following is included:

[0042] corresponding grinding circle number information and product identification are obtained based on the current crystal pallet size data; corresponding target difference value region is determined based on the corresponding grinding circle number information and the product identification;

[0043] the grinding grinding amount data of each grinding crystal pallet is compared with the corresponding target difference value region, and corresponding grinding comparison result is output;

[0044] when the grinding comparison result meets a preset early warning difference value condition, early warning is performed.

[0045] By adopting the technical scheme, since the crystal gauge needs to be ground for multiple times with different precision, in order to monitor the grinding effect of the grinding machine for each grinding, the grinding times with poor grinding effect and the corresponding grinding effect are prompted during each grinding, so as to finely control the grinding steps of the final grinding processing of the crystal gauge. Specifically, the corresponding target difference value region is calculated based on the crystal gauge size data of different grinding times, the grinding circle number information and the corresponding grinding machine product identifier, the grinding allowance data of each grinding crystal gauge is compared with the corresponding target difference value region, and the grinding comparison result including two cases is obtained, one is that the grinding allowance data of each grinding crystal gauge is not in the corresponding target difference value region (indicating that the grinding effect does not reach the expectation), and the other is that the grinding allowance data of each grinding crystal gauge is in the corresponding target difference value region (indicating that the grinding effect reaches the expectation). At this time, the grinding comparison result which does not meet the grinding process requirement is further compared with the early warning difference value condition, and early warning is performed when the early warning difference value condition is met, so as to timely prompt to adjust the grinding control parameter of the grinding machine or take corresponding adjustment measures.

[0046] In a preferred example of the present application:

[0047] Based on the detected crystal gauge size data and the crystal gauge allowance data of each grinding crystal gauge, the hundred circle grinding allowance data of different grinding machines is calculated;

[0048] The hundred circle grinding allowance data of different grinding machines and the corresponding product identifier are sent to a fault judgment model, and the threshold interval corresponding to the hundred circle grinding allowance data is identified and obtained;

[0049] It is judged whether the hundred circle grinding allowance data is located in the corresponding threshold interval;

[0050] When the hundred circle grinding allowance data of a certain grinding machine is not in the corresponding threshold interval, the product identifier is used to produce a fault prompt information and send it to a preset maintenance terminal.

[0051] By adopting the technical scheme, the grinding machine can maintain good grinding efficiency for monitoring the grinding effect of the crystal weight during long-term grinding work. In the process of grinding of the grinding machine, the data of the hundred-circle grinding amount of different grinding machines is calculated, and the corresponding threshold interval is divided according to the data of the hundred-circle grinding amount of the grinding machines of different types and different grinding machines. The threshold interval is the range of the difference of the hundred-circle grinding amount allowed by the standard process requirement when the grinding machine with the product identification is in the normal operation state. The threshold intervals of the data of the hundred-circle grinding amount of different types of grinding machines are not the same. Formulating the corresponding threshold interval based on the product identification can improve the accuracy of the judgment result of the fault judgment model and the fault judgment efficiency. When the data of the hundred-circle grinding amount of a grinding machine is not in the corresponding threshold interval, it indicates that the grinding process of the current grinding machine does not meet the corresponding process standard requirement, and the grinding machine has a fault. At this time, the fault prompt information is output to prompt the maintenance personnel of the maintenance terminal to take corresponding maintenance measures in time, so as to reduce the problem of defective products caused by the fault of the grinding machine.

[0052] In summary, the present application has at least one of the following beneficial technical effects:

[0053] 1. The work order reading mechanism, the grinding machine control mechanism and the size automatic measurement mechanism constitute an automatic integrated control crystal weight grinding control system, which effectively avoids the product scrapping caused by human factors and greatly reduces the control cost of crystal weight grinding operation. Specifically, in the actual workshop production process, in the face of a large number of crystal weight grinding processing requirements, in order to facilitate systematic management, before the crystal weight grinding processing, the crystal weight processing work order to be ground is generated based on the current crystal weight. At this time, the work order reading mechanism automatically reads the product process information and the information to be ground on the crystal weight processing work order, effectively reducing the situation of using the wrong grinding machine model for processing and missing the process by human. Then, the grinding machine control mechanism generates corresponding grinding circle number information and final crystal weight size threshold (the crystal weight size threshold is the normal size error of the crystal weight after grinding processing to meet the current generated process requirements) based on the current crystal weight. After the crystal weight is placed in the grinding position of the grinding machine, the grinding machine control mechanism performs crystal weight grinding processing work based on the correct grinding circle number information, and stops processing when the actual grinding circle number reaches the correct grinding circle number. The automatic control method effectively avoids the problems of manual operation error or incorrect grinding circle number setting, greatly improves the grinding precision, and is beneficial to improve the quality stability and pass rate of crystal weight products.

[0054] Further, the crystal bar is placed in the detection position of the automatic size measuring mechanism to automatically measure the size of the crystal bar, and the current crystal bar size data and the crystal bar grinding amount data of each time of grinding the crystal bar are obtained and recorded, so that the crystal bar processing crystal bar processing history information is recorded comprehensively and completely, which is beneficial to realize standardized operation; the grinding operation of the grinding machine and the automatic size measuring work are repeated until the current crystal bar size data of the crystal bar is within the corresponding crystal bar size threshold value, that is, the crystal bar meets the process standard size requirement at this time, which is beneficial to prompt the operator to take away the ground crystal bar in time and improve the production efficiency; the operator of the present application only needs to place the crystal bar on the grinding machine and automatically detect after each grinding, which is beneficial to reduce the manual measurement error; and the purpose of improving the stability of the grinding machine grinding processing crystal bar product quality and improving the yield is realized.

[0055] 2. The start-stop control circuit is used to generate a corresponding number of threshold signals based on the number of grinding circles of each time of grinding the crystal bar, and the grinding machine control mechanism can generate different number of threshold signals one by one based on different grinding number information generated each time, so as to realize real-time and convenient automatic control of the start and stop of the grinding machine; specifically, when the grinding machine is started, the number of times counting unit of the start-stop control circuit is started and begins to count the number of grinding circles of the grinding machine for grinding the crystal bar, so as to obtain a real-time number of times counting signal, and the signal comparison unit compares the number of times counting signal with the corresponding number of threshold signals and outputs two comparison results: the first result is that when the signal comparison unit compares the number of times counting signal to be less than the number of threshold signals (that is, the actual number of grinding circles of the grinding machine does not reach the number of grinding circles required by the corresponding grinding number information), a first type of level signal is output; the second result is that when the signal comparison unit compares the number of times counting signal to be equal to the number of threshold signals (that is, the actual number of grinding circles of the grinding machine reaches the number of grinding circles required by the corresponding grinding number information), a second type of level signal is output; the switch control unit outputs an opening signal based on the first type of level signal to control the control circuit of the grinding machine to remain in an open state; or the switch control unit outputs an opening signal based on the first type of level signal to control the control circuit of the grinding machine to be disconnected.

[0056] 3. In order to monitor the grinding effect of the lapping machine on the crystal lap during long-term lapping work, so that the lapping machine can maintain good lapping efficiency; in the process of lapping work of the lapping machine, the application calculates the hundred-circle grinding amount data of different lapping machines, and divides corresponding threshold intervals according to the hundred-circle grinding amount data of different lapping machines and different lapping machines, the threshold interval is the hundred-circle grinding amount difference range allowed by the standard process requirement when the lapping machine corresponding to the product identification is in normal operation state; the threshold intervals of the hundred-circle grinding amount data of different lapping machines are not the same; based on the product identification, corresponding threshold intervals are formulated one by one, which is conducive to improving the accuracy and fault judgment efficiency of the fault judgment model; when the hundred-circle grinding amount data of a lapping machine is not in the corresponding threshold interval, it indicates that the lapping work of the current lapping machine does not meet the corresponding process standard requirement, and the lapping machine has a fault, at this time, output the fault prompt information to prompt the maintenance personnel of the maintenance terminal to take corresponding maintenance measures in time, so as to reduce the problem of defective products caused by lapping machine failure. BRIEF DESCRIPTION OF DRAWINGS

[0057] Figure 1 is a principle block diagram of a crystal lap grinding control system in an embodiment of the application;

[0058] Figure 2 is a top view of the installation structure of the measuring base and the positioning protrusion of the size automatic measuring mechanism in the crystal lap grinding control system in an embodiment of the application;

[0059] Figure 3 is a circuit diagram of the start-stop control circuit in the crystal lap grinding control system in an embodiment of the application;

[0060] Figure 4 is a flowchart of a crystal lap grinding control method in an embodiment of the application;

[0061] Figure 5 is a flowchart of step S4 in the crystal lap grinding control method in an embodiment of the application;

[0062] Figure 6 is another flowchart of a crystal lap grinding control method in an embodiment of the application. DETAILED DESCRIPTION

[0063] The application will be further described in detail below with reference to the accompanying drawings.

[0064] In an embodiment, as Figure 1As shown, this application discloses a crystal grinding control system, including a work order reading mechanism, a grinding machine control mechanism, and an automatic dimension measuring mechanism; the grinding machine control mechanism is sequentially connected to the work order reading mechanism, the grinding machine, and the automatic dimension measuring mechanism; the work order reading mechanism includes a scanning and recognition device that can scan, identify, and acquire crystal grinding work orders; the grinding machine control mechanism includes a visual display terminal and multiple different control buttons, and the grinding machine control mechanism responds to the pressing operation of the multiple control buttons to control the grinding machine and the automatic dimension measuring mechanism.

[0065] like Figure 1 As shown, the grinding machine comes in various models, such as the 4B, 6B, 9B, and 9S surface grinding machines. Different models can achieve one or more grinding precisions on the ingots at different levels, such as coarse grinding, medium grinding, fine grinding, and precision grinding. Based on the grinding process and dimensional requirements of different ingots, it is necessary to select the correct model of grinding machine for grinding to ensure the yield rate. Each grinding machine is associated with a product identifier, which is a unique product information code for each grinding machine. The product identifier also includes the model and applicable grinding precision information. The automatic dimensional measurement mechanism includes a micrometer with a thickness gauge of one-thousandth and a capacitive grating micrometer with a thickness gauge of one-ten-thousandth.

[0066] Specifically, the work order reading mechanism is used to identify and obtain the initial data of the crystal wheel and the grinding processing parameters in the preset crystal wheel processing work order. The preset crystal wheel processing work order is generated based on the product process information and grinding processing information of the crystal wheel. The grinding machine control mechanism calculates the number of grinding cycles and the corresponding crystal wheel size threshold for each grinding cycle based on the initial data of the crystal wheel and the grinding processing parameters. The grinding machine control mechanism controls the grinding machine to grind the crystal wheel to the set crystal wheel size according to the number of grinding cycles. After reaching the corresponding number of grinding cycles, the grinding of the crystal wheel is stopped and the total number of grinding cycles of the crystal wheel is counted.

[0067] An automatic dimension measuring mechanism detects the grinding wheel, obtains and records the current grinding wheel size data and the grinding amount data for each grinding cycle. The grinding machine control mechanism compares the current grinding wheel size data with the corresponding grinding wheel size threshold and provides a prompt when the automatic dimension measuring mechanism detects that the grinding wheel has reached the corresponding grinding wheel size threshold. The operator only needs to place the grinding wheel on the grinding machine and place it on the automatic dimension measuring mechanism for automated detection after each grinding cycle, which helps to reduce manual measurement errors. This achieves the goal of improving the quality stability of the grinding wheel products and increasing the yield rate.

[0068] like Figure 2As shown, the size automatic measurement mechanism includes a measurement base, an automatic measurement module and a plurality of positioning protrusions; the measurement end of the automatic measurement module is located directly above the top of the measurement base (not shown in the figure), the plurality of positioning protrusions are arranged at intervals in the measurement area of the measurement base, and the heights of the plurality of positioning protrusions are flush; in this embodiment, three positioning protrusions are provided, and the positioning protrusions are made of tungsten steel; the crystal weight is placed on the top of the plurality of positioning protrusions, the automatic measurement module automatically measures the actual size data of the crystal weight to obtain the current crystal weight size data, and the automatic measurement module sends the current crystal weight size data to the grinder control mechanism; in this embodiment, the positioning protrusions are additionally provided on the measurement base of the size automatic measurement mechanism, the crystal weight is placed on the top of the plurality of positioning protrusions for measurement (at this time, the crystal weight is in point contact with the positioning protrusions), so that the crystal weight can be simply cleaned before measurement, without the need to wipe the crystal weight and move the air outlet cavity, thereby greatly improving the measurement work efficiency under the premise of ensuring the measurement accuracy.

[0069] In this embodiment, the grinder control mechanism detects the running states of a plurality of grinders to obtain grinder running state information, the grinder running state information includes standby, running, stop measurement and fault maintenance; the grinder running state information is displayed on the visual display terminal; when the grinder control mechanism obtains the crystal weight initial data and the grinding processing parameters of the work order reading mechanism, at least one grinder is selected for grinding processing and a corresponding processing process operation list is generated, the processing process operation list includes an operation flow and operation content corresponding to the crystal weight to be ground; when the operator moves the crystal weight for size measurement and grinding, the operator only needs to perform corresponding operations according to the processing process operation list, so that the processing operation process can be understood at a glance, and problems such as objective misjudgment, misrecording, misoperation, non-standard operation, new employee training difficulty and the like are effectively avoided, the grinding operation is simple and easy to operate, and it is beneficial to save management and control costs.

[0070] As shown in Figure 3 As shown in Figure 3The circuit diagram shown is an example, the grinder control mechanism generates a corresponding number of threshold signals based on the number of grinding laps of each grinding crystal weight; the grinder control mechanism is coupled with a start-stop control circuit for controlling the start and stop of the grinder, the start-stop control circuit includes a number counting unit, a signal comparison unit and a switch control unit, the number counting unit is used to detect and count the number of grinding laps of the grinder and output a number counting signal; the signal comparison unit is coupled to the number counting unit to receive the number counting signal, compares the number counting signal with the corresponding number of threshold signals and outputs a comparison signal, the comparison signal includes a first type of level signal and a second type of level signal; the signal comparison unit is coupled to the signal comparison unit and is connected in series in the power supply circuit of the grinder to output a switch signal after receiving the comparison signal, the switch signal includes a start signal and a stop signal; the switch control unit outputs a start signal to control the start of the grinder when receiving the first type of level signal, and outputs a stop signal to control the stop of the grinder when receiving the second type of level signal.

[0071] As shown in Figure 3 In this embodiment, the number counting unit includes a Hall sensor, the grinder includes a driving motor for driving the grinding disc to rotate, the Hall sensor counts the signal pulses of the driving motor to calculate the number of rotations of the driving motor, and receiving one pulse of the Hall sensor is one lap; the signal comparison unit includes a comparator N1, and the switch control unit includes an NPN type transistor Q and a relay KM, the relay KM includes a normally closed contact switch KM-1; wherein the first type of level signal is a low level signal, and the second type of level signal is a high level signal.

[0072] As shown in Figure 3 The number counting unit of the start-stop control circuit starts to count the number of grinding laps of the grinder at the same time, to obtain a real-time number counting signal, and the signal comparison unit compares the number counting signal with the corresponding number of threshold signals and outputs two comparison results: the first result is that when the signal comparison unit compares the number counting signal to be less than the number of threshold signals (i.e. at this time the actual number of grinding laps of the grinder does not reach the number of grinding laps required by the corresponding grinding lap information), a low-level first type of level signal is output, the transistor Q is not turned on, and the normally closed contact switch KM-1 of the relay KM remains in a normally closed state, so that the power supply circuit of the grinder is normally turned on; on the contrary, the second result is that when the signal comparison unit compares the number counting signal to be equal to the number of threshold signals (i.e. at this time the actual number of grinding laps of the grinder reaches the number of grinding laps required by the corresponding grinding lap information), a high-level second type of level signal is output, the transistor Q is turned on, and the normally closed contact switch KM-1 of the relay KM is disconnected, so that the power supply circuit of the grinder is disconnected.

[0073] As shown in Figure 3As shown, an emergency stop control button SB2 is connected in series in the power supply circuit of the grinder, and the emergency stop control button SB2 is used to control the power supply circuit of the grinder to be disconnected when the grinder needs to be stopped in an emergency due to a fault.

[0074] In an embodiment, as shown in the figure, the application discloses a crystal weight grinding control method, which is applied to the crystal weight grinding control system in the above embodiment, and specifically includes the following steps: Figure 4

[0075] S1: Identify and obtain the crystal weight initial data and grinding processing parameters in the preset crystal weight processing work order.

[0076] In this embodiment, in order to facilitate systematic management, a crystal weight processing work order to be ground will be generated based on the current crystal weight before the crystal weight is ground. At this time, the product process information and the information to be ground on the crystal weight processing work order are automatically read by using a work order reading mechanism, which effectively reduces the situation of using a grinding machine model with human use error for processing and missing a process.

[0077] S2: Calculate the grinding circle number information and the corresponding crystal weight size threshold of each grinding crystal weight based on the crystal weight initial data and the grinding processing parameters.

[0078] In this embodiment, the crystal weight size threshold is the normal size error of the crystal weight after the grinding processing is completed to meet the current process requirement; and the crystal weight size threshold is the final crystal weight size threshold after the crystal weight grinding processing is completed.

[0079] S3: Grind the crystal weight according to the grinding circle number information to the set crystal weight size, stop grinding the crystal weight when the corresponding grinding circle number information is reached, and count the total grinding frequency of the crystal weight.

[0080] In this embodiment, after the crystal weight is placed at the grinding position of the grinding machine, the crystal weight grinding processing work is performed based on the correct grinding circle number information, and the processing is stopped when the actual grinding circle number reaches the correct grinding circle number. The automatic control mode effectively avoids the problems of manual operation errors or incorrect grinding circle number settings, greatly improves the grinding precision, and is beneficial to improve the quality stability and the pass rate of the crystal weight product.

[0081] S4: Detect the actual size information of the crystal weight to obtain the current crystal weight size data, compare the crystal weight size data detected each time with the crystal weight size data of the previous time, and obtain the crystal weight grinding amount data of each grinding crystal weight.

[0082] ​In this embodiment, the grinding wheel is placed at a detection position such as an automatic size measuring mechanism to automatically detect the size of the grinding wheel, obtain and record the current size data of the grinding wheel and the grinding amount data of the grinding wheel each time, thereby realizing comprehensive and complete recording of the grinding wheel processing history information, which is conducive to achieving standardized operation.

[0083] S5: Compare the current crystal size data with the corresponding crystal size threshold, and provide a prompt when the crystal size reaches the corresponding crystal size threshold.

[0084] Specifically, the grinding operation of the grinding machine and the automated size measurement work are repeated until the current size data of the grinding wheel is within the corresponding size threshold. At this point, the grinding wheel meets the process standard size requirements, which helps to prompt the operator to remove the ground grinding wheel in time and improve production efficiency.

[0085] In this embodiment, the operator only needs to place the crystal grinding wheel on the grinding machine and place it on the automatic size measuring mechanism for automated detection after each grinding, which helps to reduce manual measurement errors; thereby achieving the goal of improving the quality stability of the crystal grinding wheel products processed by the grinding machine and increasing the yield rate.

[0086] In one embodiment, such as Figure 5 As shown, in step S4, the actual size information of the grinding wheel is detected to obtain the current grinding wheel size data, and the grinding wheel size data detected each time is compared with the previous grinding wheel size data to obtain the grinding wheel amount data for each grinding wheel, specifically including:

[0087] S41: Detect the actual size information of each wafer in the chip to obtain the current chip size data, which includes the chip size data of multiple wafers.

[0088] In this embodiment, the crystal grinding wheel includes multiple quartz crystal wafers. After each grinding process using a grinding machine, the actual size information of each wafer is detected and compared when measured using an automatic size measuring mechanism.

[0089] S42: Collect statistics on the crystal weight size data of multiple wafers in each inspection, and calculate the average value and dispersion data of the entire crystal weight.

[0090] In this embodiment, the overall size change of the grinding machine for each grinding cycle is obtained by calculating the average value data, and the variance data is used to understand the size change of the grinding wheel during multiple grinding processes, thereby understanding the non-uniformity of the grinding quality of the grinding wheel.

[0091] S43: Compare the crystal grinding wheel size data of multiple wafers tested each time with the crystal grinding wheel size data of the previous time to obtain the crystal grinding wheel amount data for each grinding wheel.

[0092] In the embodiment, the lapping amount data of each lapping of the crystal bar is calculated, so as to analyze the consistency of the lapping quality of the lapping machine to the crystal bar, and when the lapping amount data of the crystal bar is abnormally changed, it is indicated that the lapping coefficient is abnormal during lapping, and the lapping machine may have a fault, so that maintenance measures can be taken for the lapping machine in time.

[0093] In an embodiment, after step S4, the crystal bar lapping control method comprises:

[0094] S401: obtaining corresponding lapping circle number information and product identification based on the current crystal bar size data; determining the corresponding target difference value region based on the corresponding lapping circle number information and product identification.

[0095] Specifically, the corresponding target difference value region is calculated based on the crystal bar size data of different lapping times, the lapping circle number information and the corresponding lapping machine product identification.

[0096] S402: comparing the lapping lapping amount data of each lapping of the crystal bar with the corresponding target difference value region, and outputting the corresponding lapping comparison result.

[0097] Specifically, the lapping lapping amount data of each lapping of the crystal bar is compared with the corresponding target difference value region to obtain the lapping comparison result including two cases, one is that the lapping lapping amount data of each lapping of the crystal bar is not in the corresponding target difference value region (indicating that the lapping effect does not reach the expectation), and the other case is that the lapping lapping amount data of each lapping of the crystal bar is in the corresponding target difference value region (indicating that the lapping effect reaches the expectation).

[0098] S403: warning when the lapping comparison result meets the preset warning difference value condition.

[0099] In the embodiment, since the crystal bar needs to be lapped for multiple times with different precision, in order to monitor the lapping effect of the lapping machine for each lapping of the crystal bar, the lapping times with poor lapping effect and the corresponding lapping effect are prompted for each lapping, so as to finely control the lapping steps of the final lapping processing of the crystal bar.

[0100] Specifically, when the lapping lapping amount data of each lapping of the crystal bar is not in the corresponding target difference value region, the lapping comparison result which does not meet the lapping process requirement is further compared with the warning difference value condition, and warning is performed when the warning difference value condition is met, so as to timely prompt to adjust the lapping control parameters of the lapping machine or take corresponding adjustment measures.

[0101] In an embodiment, as shown in Figure 6 the crystal bar lapping control method further comprises:

[0102] S61: Based on the detected crystal weight size data and the crystal weight grinding amount data of each time of grinding crystal weight, the different grinding machine hundred circle grinding amount data is calculated.

[0103] In the embodiment, in order to monitor the grinding effect of the grinding machine on the crystal weight in the long-term grinding work, the grinding machine maintains good grinding efficiency; the application calculates the hundred circle grinding amount data of different grinding machines in the process of grinding.

[0104] S62: The hundred circle grinding amount data of different grinding machines and the corresponding product identifier are sent to the fault judgment model to identify and obtain the threshold interval corresponding to the hundred circle grinding amount data.

[0105] Specifically, the corresponding threshold interval is divided for different grinding machines and different grinding machine hundred circle grinding amount data, and the threshold interval is the hundred circle grinding amount difference range allowed by the grinding machine in the normal operation state and in accordance with the standard process requirements; the threshold interval of the grinding machine hundred circle grinding amount data of different machine types is not the same.

[0106] S63: Determine whether the hundred circle grinding amount data is in the corresponding threshold interval.

[0107] S64: When the hundred circle grinding amount data of a certain grinding machine is not in the corresponding threshold interval, a production fault prompt information is generated based on the product identifier and sent to a preset maintenance terminal.

[0108] Specifically, the corresponding threshold interval is formulated one by one based on the product identifier, which is conducive to improving the accuracy and efficiency of the fault judgment model; when the hundred circle grinding amount data of a certain grinding machine is not in the corresponding threshold interval, it indicates that the current grinding process of the grinding machine does not meet the corresponding process standard requirements, and the grinding machine has a fault, at this time, the fault prompt information is output to prompt the maintenance personnel of the maintenance terminal to take corresponding maintenance measures in time, so as to reduce the problem of defective products caused by grinding machine failure.

[0109] It should be understood that the sequence numbers of the steps in the above embodiments do not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the application.

[0110] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand; it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A crystal grinding control system, characterized in that, include: Work order reading mechanism, grinding machine control mechanism, and automatic dimension measuring mechanism; The work order reading mechanism is used to identify and obtain the initial data of the crystal ingot and the grinding processing parameters in the preset crystal ingot processing work order. The preset crystal ingot processing work order is generated based on the product process information and grinding processing information of the crystal ingot. The grinding machine control mechanism calculates the number of grinding cycles and the corresponding crystal size threshold for each grinding cycle based on the initial data of the crystal and the grinding processing parameters. The grinding machine control mechanism controls the grinding machine to grind the crystal to the set crystal size according to the grinding circle number information. After reaching the corresponding grinding circle number information, the grinding of the crystal is stopped and the total number of grinding times of the crystal is counted. The automatic size measuring mechanism detects the grinding wheel, obtains and records the current grinding wheel size data and the grinding wheel amount data for each grinding. The grinding machine control mechanism compares the current grinding wheel size data with the corresponding grinding wheel size threshold, and provides a prompt when the automatic size measuring mechanism detects that the grinding wheel has reached the corresponding grinding wheel size threshold. The automatic size measurement mechanism includes a measuring base, an automatic measurement module, and multiple positioning protrusions. The measuring end of the automatic measurement module is located on the top of the measuring base, and the multiple positioning protrusions are spaced apart in the measuring area of ​​the measuring base, with the heights of the multiple positioning protrusions being flush. The grinding wheel is placed on top of the multiple positioning protrusions, and the automatic measurement module automatically measures the actual size data of the grinding wheel to obtain the current grinding wheel size data. The automatic measurement module then sends the current grinding wheel size data to the grinding machine control mechanism. The grinding machine control mechanism includes a visual display terminal and multiple different control buttons. The grinding machine control mechanism responds to the pressing of the multiple control buttons to control the grinding machine and the automatic size measuring mechanism. The grinding machine control mechanism is connected to various models of grinding machines, each of which is associated with a product identifier. The grinding machine control mechanism detects the operating status of multiple grinding machines to obtain grinding machine operating status information, which is then displayed on the visual display terminal. When the grinding machine control mechanism obtains the initial data of the grinding wheel and the grinding processing parameters from the work order reading mechanism, it selects at least one grinding machine for grinding processing and generates a corresponding processing operation list. The processing operation list includes the operation flow and operation content corresponding to the grinding wheel to be ground. The grinding machine control mechanism generates a corresponding number of revolutions threshold signal based on the number of grinding revolutions of the grinding stone for each grinding cycle; The grinding machine control mechanism is coupled to a start-stop control circuit for controlling the grinding machine to start and stop, the start-stop control circuit including: A count unit is used to detect and count the number of times the grinding mill grinds the grinding stone and to send a count signal. A signal comparison unit is coupled to the count unit to receive a count signal. The signal comparison unit compares the count signal with a corresponding lap count threshold signal and outputs a comparison signal. The comparison signal includes a first type level signal and a second type level signal. A switch control unit, coupled to the signal comparison unit and connected in series in the power supply circuit of the grinder, outputs a switch signal after receiving the comparison signal. The switch signal includes an on signal and an off signal. When the switch control unit receives the first type of level signal, it outputs an on signal to control the grinder to turn on. When the switch control unit receives the second type of level signal, it outputs an off signal to control the grinder to turn off.

2. The crystal grinding control system according to claim 1, characterized in that, The positioning protrusions are provided in three parts, and the positioning protrusions are made of tungsten steel.

3. A method for controlling the grinding of crystal grinding wheels, characterized in that, The method applied to the crystal grinding control system according to any one of claims 1-2 includes: Identify and obtain the initial data of the crystal grinding wheel and the grinding parameters in the preset crystal grinding wheel processing work order; Based on the initial data of the grinding wheel and the grinding processing parameters, calculate the number of grinding cycles for each grinding of the grinding wheel and the corresponding grinding wheel size threshold; The grinding wheel is ground to the set size according to the grinding wheel number information. After the corresponding grinding wheel number information is reached, the grinding of the grinding wheel is stopped and the total number of grinding cycles of the grinding wheel is counted. The actual size information of the grinding wheel is detected to obtain the current grinding wheel size data, and the grinding wheel size data of each detection is compared with the previous grinding wheel size data to obtain the grinding wheel amount data of each grinding wheel; The current ingot size data is compared with the corresponding ingot size threshold, and a prompt is given when the ingot is detected to have reached the corresponding ingot size threshold.

4. The crystal grinding control method according to claim 3, characterized in that, The process involves detecting the actual size information of the grinding wheel to obtain the current grinding wheel size data, and comparing the grinding wheel size data of each detection with the previous grinding wheel size data to obtain the grinding wheel amount data for each grinding wheel. Specifically, this includes: The actual size information of each wafer in the chip is detected to obtain the current chip size data, which includes the chip size data of multiple wafers; The crystal weight size data of the multiple wafers in each test are statistically analyzed, and the average value and dispersion data of the entire crystal weight are calculated. The chip size data of the multiple wafers in each test is compared with the chip size data of the previous test to obtain the chip grinding amount data of each grinding chip.

5. The crystal grinding control method according to claim 4, characterized in that, The process of detecting the actual size information of the grinding wheel to obtain the current grinding wheel size data, and comparing the grinding wheel size data of each detection with the previous grinding wheel size data to obtain the grinding wheel amount data for each grinding wheel, includes: Based on the current crystal size data, obtain the corresponding grinding cycle number information and product identifier; based on the corresponding grinding cycle number information and product identifier, determine the corresponding target difference region; The grinding and finishing amount data of each grinding stone is compared with the corresponding target difference area, and the corresponding grinding comparison result is output. An early warning is issued when the grinding comparison results meet the preset early warning difference condition.

6. The crystal grinding control method according to claim 5, characterized in that, Also includes: Based on the detected crystal size data and the crystal grinding amount data of each grinding crystal, the grinding amount per hundred revolutions of different grinding machines is calculated. The grinding amount data per hundred revolutions of different grinding machines and the corresponding product identification are sent to the fault judgment model to identify and obtain the threshold range corresponding to the grinding amount data per hundred revolutions; Determine whether the grinding amount data for 100 revolutions is within the corresponding threshold range; When the grinding amount data of a certain grinding machine is not within the corresponding threshold range, a fault prompt message is generated based on the product identifier and sent to the preset maintenance terminal.

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