An automatic proportioning and adding system for machining

Abstract

The invention discloses an automatic proportioning and adding system for machining, relates to the technical field of coolant proportioning, and is used to solve the problem that the existing automatic adding and proportioning system can only proportion the coolant according to a preset concentration when proportioning the coolant, and cannot automatically correct the coolant concentration according to the coolant usage data. The invention comprises an automatic proportioning module, a collection module, a control module and a correction module; the invention utilizes the automatic proportioning module to automatically proportion the coolant according to the demand, and the amount and time of adding the coolant are relatively accurate, and the cutting speed, cutting depth, cutting feed rate and cutting temperature in the coolant usage data can be collected through the collection module, and the concentration of the coolant is automatically adjusted according to these influencing parameters to achieve a better cutting effect, and at the same time, the proportion of the automatic proportioning module can be verified and calibrated according to the correction module to avoid abnormalities that are not discovered in time.

Description

Technical Field

[0001] The invention relates to the technical field of coolant proportioning, in particular to an automatic proportioning and adding system for machining. Background Art

[0002] In the cutting process, it is often necessary to add different types of coolants or lubricants to achieve better cutting results. The traditional way of adding is manual addition, which is inefficient and difficult to accurately control the amount of addition, which is easy to cause waste.

[0003] In recent years, with the continuous development of automation technology, automatic adding systems have gradually been widely used in the field of cutting processing.

[0004] However, the existing automatic adding and proportioning system still has some problems. When proportioning the coolant, it can only be proportioned according to the preset concentration. The coolant concentration cannot be automatically corrected according to the coolant usage data, and faults in the automatic proportioning system cannot be discovered, which increases maintenance costs and has relatively simple functions.

[0005] In order to solve the above defects, a technical solution is now provided. Summary of the invention

[0006] The purpose of the present invention is to solve the problem that the existing automatic adding and proportioning system can only proportion the coolant according to the preset concentration and cannot automatically correct the coolant concentration according to the coolant usage data, and to propose an automatic proportioning and adding system for machining.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] An automatic proportioning and adding system for machining, comprising:

[0009] Automatic proportioning module, used for automatically proportioning the coolant;

[0010] The automatic proportioning module includes a coolant storage tank, a delivery pipeline, a PLC controller, a control element and a collection element;

[0011] The coolant storage tank is used to store the proportioned coolant; a common storage tank and several spare storage tanks are arranged in the coolant storage tank;

[0012] The delivery pipeline consists of raw liquid delivery pipe, tap water delivery pipe, collection pipe and distribution pipe;

[0013] One end of the raw liquid delivery pipe is connected to the raw liquid tank, and the other end is connected to the collection pipe; one end of the tap water delivery pipe is connected to the tap water, and the other end is also connected to the collection pipe; one end of the collection pipe is connected to the raw liquid delivery pipe and the tap water delivery pipe, and the other end is connected to a plurality of branch pipes; one end of the plurality of branch pipes is connected to the collection pipe, and the other end is respectively connected to a plurality of spare storage boxes and a common storage box arranged in the coolant storage tank;

[0014] The control components include a one-way valve, an electromagnetic ball valve, a raw liquid diaphragm pump and a conversion valve;

[0015] There are two one-way valves, which are respectively arranged on the raw liquid delivery pipe and the tap water delivery pipe to prevent the coolant from flowing back and causing contamination of the raw liquid or tap water;

[0016] The electromagnetic ball valve and the raw liquid diaphragm pump are respectively arranged on the tap water delivery pipe and the raw liquid delivery pipe, and are both electrically connected to the PLC controller to control the displacement and speed of the raw liquid and tap water;

[0017] The switching valve is arranged between the collecting pipe and a plurality of branch pipes, and is used to switch the cooling liquid discharge pipe in the collecting pipe, and is electrically connected to the PLC controller;

[0018] The collecting element includes a plurality of concentration meters and liquid level meters, which are respectively arranged in a common storage box and a plurality of spare storage boxes, and are all electrically connected to the PLC controller for detecting the amount of coolant stored and the concentration of the coolant;

[0019] A coolant ratio algorithm is set in the PLC controller;

[0020] A collection module is used to collect coolant usage data and analyze coolant concentration adjustment values;

[0021] The control module obtains the coolant concentration adjustment value calculated in the acquisition module and automatically adjusts the coolant concentration;

[0022] The correction module is used to obtain data from the control components and the collection components in the automatic proportioning module, and to verify and calibrate the coolant proportion of the automatic proportioning module.

[0023] Furthermore, the coolant ratio algorithm in the PLC controller in the automatic ratio module includes:

[0024] The concentration and content of the coolant in the coolant storage tank are obtained by a concentration meter and a liquid level meter in the coolant storage tank;

[0025] Then obtain the required coolant concentration and coolant standard volume, and mark them as P respectively. 需 and V 需 ;

[0026] The existing coolant concentration is marked as P 存 , the existing coolant volume is marked as V 存 , and by calculating the formula L 存 =V 存 *P 存 Get the existing coolant original liquid content L 存 ;

[0027] When P 需 =P 存 Or the existing coolant concentration P 存 and the required coolant concentration P 需 When the difference is less than the preset difference, the formula V 加 =V 需 -V 存 Get the coolant added volume V 加 ;

[0028] Then use the formula: L 加 =V 加 *P 需 and W 加 =V 加 -L 加 , respectively get the amount of added stock solution L 加 And the amount of tap water added W 加 ;

[0029] When P 需 >P 存 And the existing coolant concentration P 存 and the required coolant concentration P 需 When the difference is greater than the preset difference, the calculation formula is: L 加 =V 需 *P 需 -L 存 and W 加 =V 需 -V 存 -L 加 The amount of added stock solution L is obtained respectively 加 And the amount of tap water added W 加 ;

[0030] When P 需 <P 存 And the existing coolant concentration P 存 and the required coolant concentration P 需 When the difference is greater than the preset difference, the calculation formula is also used: L 加 =V 需 *P 需 -L 存 and W 加 =V 需 -V 存 -L加 The amount of added stock solution L is obtained respectively 加 And the amount of tap water added W 加 ;

[0031] The calculated amount of added stock solution L 加 And the amount of tap water added W 加 The PLC controller controls the stock liquid diaphragm pump and the electromagnetic ball valve to add the corresponding amount of stock liquid and tap water to the coolant storage tank.

[0032] Furthermore, the specific process of the acquisition module analyzing the coolant concentration adjustment value through the coolant usage data includes the following steps:

[0033] The collected coolant usage data include cutting methods and parameters, which include cutting speed, cutting depth, cutting feed rate and cutting temperature;

[0034] The values ​​collected by cutting mode and parameters change in real time, so set a collection cycle;

[0035] Obtain constant values ​​of cutting speed, cutting depth, cutting feed rate and cutting temperature corresponding to the existing concentration of coolant;

[0036] and respectively calculating the difference between the collected real-time values ​​of cutting speed, cutting depth, cutting feed and cutting temperature and the constant values ​​of cutting speed, cutting depth, cutting feed and cutting temperature corresponding to the existing concentration of coolant;

[0037] The obtained cutting speed difference, cutting depth difference, cutting feed difference and cutting temperature difference are normalized and analyzed and calculated to obtain the optimization index;

[0038] The obtained optimization index is compared with several preset optimization index intervals, and several optimization index intervals correspond to several coolant concentration adjustment values, wherein the coolant concentration adjustment values ​​are positive adjustment and negative adjustment, respectively corresponding to the positive and negative values ​​of the cutting temperature difference.

[0039] Furthermore, the specific operation steps of the control module to automatically adjust the concentration of the coolant through the coolant concentration adjustment value are as follows:

[0040] Get the coolant concentration P in the common storage tank in the coolant storage tank in the automatic proportioning module 存 and the existing coolant volume V 需 , and calculated by formula L 存 =V 存 *P 存 Get the existing coolant original liquid content L 存 ; At the same time, obtain the required coolant volume V in the common storage tank 需 ;

[0041] Then obtain the coolant concentration adjustment value in the acquisition module and calibrate it as P 调 ;

[0042] Using the formula L 调 =V 需 *P 调 , get the original liquid content L after the coolant is adjusted 调 ;

[0043] The calculated coolant adjusted original liquid content L 调 Subtract the existing coolant original liquid content L 存 Get the difference in the original solution content and calibrate it as L 差 ; When the original solution content difference L 差 When it is a negative value, the spare storage tank is directly used to make a new coolant concentration ratio according to the coolant concentration adjustment value;

[0044] When the original solution content difference L 差 When it is positive, the required coolant volume V in the common storage tank is 需 The volume V of the coolant in the common storage tank 需 Calculate the coolant volume difference and mark it as V 差 ; When the original solution content difference L 差 ≤ Coolant volume difference V 差 When the coolant concentration in the common storage tank is adjusted, there is no need to use the spare storage tank. The coolant ratio algorithm set in the PLC controller can be used to adjust the coolant concentration in the common storage tank. Specifically:

[0045] When the cutting temperature difference MW collected in the acquisition module takes a positive value, positive adjustment is performed, that is, the concentration of the coolant is concentrated;

[0046] The coolant concentration in the common storage tank is concentrated by using the coolant ratio algorithm set in the PLC controller, so that the coolant concentration in the common storage tank after adjustment is greater than the coolant concentration in the common storage tank;

[0047] When the cutting temperature difference MW collected in the acquisition module takes a negative value, negative adjustment is performed, that is, dilution of the coolant concentration;

[0048] Similarly, the coolant ratio algorithm set in the PLC controller is used to concentrate the coolant concentration in the common storage tank, so that the coolant concentration in the adjusted common storage tank is less than the coolant concentration in the common storage tank;

[0049] When the original solution content difference L 差 >Coolant volume difference V 差 When the coolant concentration is adjusted, the spare storage tank is directly used to adjust the coolant concentration ratio according to the coolant concentration adjustment value;

[0050] Specifically: the conversion valve is controlled by a PLC controller, and the discharge port of the conversion valve is connected to a branch pipe of a spare storage box to discharge the coolant in the collection pipe into the spare storage box;

[0051] Obtain the required coolant volume in the spare storage tank, calculate the original liquid content and tap water content in the coolant through the coolant concentration adjustment value obtained in the acquisition module, and use the electromagnetic ball valve and the original liquid diaphragm pump to quantitatively drive the original liquid and tap water content into the spare storage tank, so that the existing coolant spray pipe is connected to this spare storage tank for use.

[0052] Furthermore, the specific operation steps of the correction module to verify the coolant ratio of the automatic ratio module are as follows:

[0053] Set the verification cycle, and when the verification time is reached, summarize the discharge volume of the electromagnetic ball valve and the raw liquid diaphragm pump, and use the liquid level meter in the coolant storage tank to detect the total amount of coolant synthesized from the raw liquid and tap water;

[0054] Then compare the amount detected by the liquid level meter with the sum of the discharge amounts of the electromagnetic ball valve and the raw liquid diaphragm pump, determine the difference, and compare the actual difference with the preset difference threshold;

[0055] When the actual difference is greater than the preset difference threshold, a warning operation is performed;

[0056] When the actual difference is less than or equal to the preset difference threshold, a calibration operation is performed.

[0057] Furthermore, the specific operation steps of the warning operation in the correction module are as follows:

[0058] First, drain the coolant in the coolant storage tank; and use the electromagnetic ball valve and the raw liquid diaphragm pump to drain the raw liquid and tap water separately;

[0059] At the same time, the liquid level gauge in the coolant storage tank is used to detect the amount of the separately discharged original liquid and tap water;

[0060] When the two test results are different from the discharge volume results of the electromagnetic ball valve and the raw liquid diaphragm pump, it is predicted that the liquid level meter is faulty;

[0061] When only one test result is different, it is predicted that the electromagnetic ball valve or the raw liquid diaphragm pump is faulty;

[0062] After the prediction result is determined, the prediction result and warning signal are sent to the administrator terminal.

[0063] Furthermore, the specific operation steps of the calibration operation in the correction module are as follows:

[0064] First, the coolant volume in the coolant storage tank is verified. If it is less than the required volume, the coolant storage tank is supplemented with original liquid or tap water to correct the coolant volume in the coolant storage tank.

[0065] Specifically: replenishing the coolant storage tank by detecting the concentration of the coolant through a concentration meter in the coolant storage tank to obtain the measured concentration. When the measured concentration is less than the preset concentration, the coolant storage tank is replenished with a quantitative stock solution;

[0066] When the measured concentration is greater than the preset concentration, a quantitative amount of tap water is added to the coolant storage tank, thereby correcting the volume of the coolant in the coolant storage tank.

[0067] Compared with the prior art, the present invention has the following beneficial effects:

[0068] The present invention utilizes an automatic proportioning module to automatically proportion the coolant according to demand, and the addition amount and time are relatively accurate. The collection module can collect the cutting speed, cutting depth, cutting feed rate and cutting temperature in the coolant usage data, and automatically adjust the concentration of the coolant according to these influencing parameters to achieve a better cutting effect. At the same time, the correction module can verify and calibrate the proportion of the automatic proportioning module to avoid abnormalities that are not discovered in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings;

[0070] Figure 1 It is the overall block diagram of the system of the present invention;

[0071] Figure 2 It is a schematic diagram of the automatic proportioning module in the present invention.

[0072] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0073] 1. Raw liquid tank; 2. Tap water; 3. Tap water delivery pipe; 4. Raw liquid delivery pipe; 5. Raw liquid diaphragm pump; 6. Solenoid ball valve; 7. Check valve; 8. Collecting pipe; 9. Conversion valve; 10. Distribution pipe; 11. Coolant storage tank; 12. Spare storage tank; 13. Concentration meter; 14. Liquid level meter; 15. PLC controller. DETAILED DESCRIPTION

[0074] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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.

[0075] It should be understood that the terms "include" and "comprising" used in the specification and claims of the present disclosure indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0076] It should also be understood that the terms used in this disclosure are only for the purpose of describing specific embodiments and are not intended to limit the disclosure. As used in this disclosure and claims, the singular forms of "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in this disclosure and claims refers to any combination of one or more of the associated listed items and all possible combinations, including these combinations.

[0077] like Figure 1-Figure 2 As shown, an automatic proportioning and adding system for machining includes an automatic proportioning module, a collection module, a control module and a correction module;

[0078] The automatic proportioning module is used to automatically proportion the coolant;

[0079] The automatic proportioning module includes a coolant storage tank 11, a delivery pipeline, a PLC controller 15, a control element and a collection element;

[0080] The coolant storage tank 11 is used to store the proportioned coolant;

[0081] A common storage tank and several spare storage tanks 12 are arranged in the coolant storage tank 11;

[0082] The delivery pipeline is composed of a raw liquid delivery pipe 4, a tap water delivery pipe 3, a collection pipe 8 and a distribution pipe 10;

[0083] One end of the raw liquid delivery pipe 4 is connected to the raw liquid tank 1, and the other end is connected to the collection pipe 8; one end of the tap water delivery pipe 3 is connected to the tap water 2, and the other end is also connected to the collection pipe 8; one end of the collection pipe 8 is connected to the raw liquid delivery pipe 4 and the tap water delivery pipe 3, and the other end is connected to a plurality of branch pipes 10; one end of the plurality of branch pipes 10 is connected to the collection pipe 8, and the other end is respectively connected to a plurality of spare storage boxes 12 and a common storage box arranged in the coolant storage tank 11;

[0084] The control components include a one-way valve 7, an electromagnetic ball valve 6, a raw liquid diaphragm pump 5 and a conversion valve 9;

[0085] Two one-way valves 7 are provided, which are respectively provided on the raw liquid delivery pipe 4 and the tap water delivery pipe 3, so as to prevent the contamination of the raw liquid or tap water caused by the backflow of the coolant;

[0086] The electromagnetic ball valve 6 and the raw liquid diaphragm pump 5 are respectively arranged on the tap water delivery pipe 3 and the raw liquid delivery pipe 4, and are both electrically connected to the PLC controller 15, for controlling the displacement and speed of the raw liquid and tap water;

[0087] The switching valve 9 is arranged between the collecting pipe 8 and the plurality of branch pipes 10, and is used to switch the cooling liquid discharge pipe in the collecting pipe 8, and is electrically connected to the PLC controller 15;

[0088] The collecting element includes a plurality of concentration meters 13 and a liquid level meter 14, which are respectively arranged in a common storage box and a plurality of spare storage boxes 12, and are all electrically connected to a PLC controller 15, for detecting the amount of coolant stored and the concentration of the coolant;

[0089] A coolant ratio algorithm is provided in the PLC controller 15;

[0090] The coolant ratio algorithm includes:

[0091] The concentration and content of the coolant in the coolant storage tank 11 are obtained by a concentration meter 13 and a liquid level meter 14 in the coolant storage tank 11; wherein the coolant storage tank 11 can be a common storage tank or any other spare storage tank 12;

[0092] Then obtain the required coolant concentration and coolant standard volume, and mark them as P respectively. 需 and V 需 ;

[0093] The existing coolant concentration is marked as P 存 , the existing coolant volume is marked as V 存 , and by calculating the formula L 存 =V 存 *P 存 Get the existing coolant original liquid content L 存 ;

[0094] When P 需 =P 存 Or the existing coolant concentration P 存 and the required coolant concentration P 需 When the difference is less than the preset difference, the formula V 加 =V 需 -V 存 Get the coolant added volume V 加 ;

[0095] Then use the formula: L加 =V 加 *P 需 and W 加 =V 加 -L 加 , respectively get the amount of added stock solution L 加 And the amount of tap water added W 加 ;

[0096] When P 需 >P 存 And the existing coolant concentration P 存 and the required coolant concentration P 需 When the difference is greater than the preset difference, the calculation formula is: L 加 =V 需 *P 需 -L 存 and W 加 =V 需 -V 存 -L 加 The amount of added stock solution L is obtained respectively 加 And the amount of tap water added W 加 ;

[0097] When P 需 <P 存 And the existing coolant concentration P 存 and the required coolant concentration P 需 When the difference is greater than the preset difference, the calculation formula is also used: L 加 =V 需 *P 需 -L 存 and W 加 =V 需 -V 存 -L 加 The amount of added stock solution L is obtained respectively 加 And the amount of tap water added W 加 ;

[0098] The calculated amount of added stock solution L 加 And the amount of tap water added W 加 The PLC controller 15 controls the raw liquid diaphragm pump 5 and the electromagnetic ball valve 6 to add the corresponding raw liquid amount and tap water amount to the coolant storage tank 11;

[0099] The collection module is used to collect coolant usage data;

[0100] Collect the cutting mode and parameters when the coolant is used, including cutting speed, cutting depth, cutting feed rate and cutting temperature;

[0101] The values ​​of cutting mode and parameter collection change in real time. Set a collection cycle, which can be 10s, 20s, 30s, 1min or 5min.

[0102] Then, the constant values ​​of cutting speed, cutting depth, cutting feed rate and cutting temperature corresponding to the existing concentration of coolant are obtained;

[0103] The collected real-time values ​​of cutting speed, cutting depth, cutting feed and cutting temperature are respectively calculated with the constant values ​​of cutting speed, cutting depth, cutting feed and cutting temperature corresponding to the existing concentration of coolant. The obtained cutting speed difference, cutting depth difference, cutting feed difference and cutting temperature difference are calibrated as MS, MQ, MJ and MW respectively, and after normalization, they are entered into the formula: To obtain the optimization index YZ, where α, β, χ, and δ are the preset weight coefficients of the cutting speed difference MS, cutting depth difference MQ, cutting feed difference MJ, and cutting temperature difference MW, and their values ​​are 0.993, 0.962, 1.002, and 1.265, respectively;

[0104] The obtained optimization index YZ is compared with several preset optimization index intervals. Several optimization index intervals correspond to several coolant concentration adjustment values, wherein the coolant concentration adjustment values ​​are positive adjustment and negative adjustment, respectively corresponding to the positive and negative values ​​of the cutting temperature difference MW; the positive adjustment and negative adjustment of the coolant concentration adjustment value correspond to the concentration concentration and dilution of the coolant, respectively.

[0105] The control module is used to obtain the coolant concentration adjustment value calculated in the acquisition module and automatically adjust the coolant concentration;

[0106] First, the coolant concentration P in the common storage tank in the coolant storage tank 11 in the automatic proportioning module is obtained. 存 and the existing coolant volume V 需 , and calculated by formula L 存 =V 存 *P 存 Get the existing coolant original liquid content L 存 ; At the same time, obtain the required coolant volume V in the common storage tank 需 ;

[0107] Then obtain the coolant concentration adjustment value in the acquisition module and calibrate it as P 调 ;

[0108] Using the formula L 调 =V 需 *P 调 , get the original liquid content L after the coolant is adjusted 调 ;

[0109] The calculated coolant adjusted original liquid content L 调 Subtract the existing coolant original liquid content L 存 Get the difference in the original solution content and calibrate it as L 差 ; When the original solution content difference L 差 When it is a negative value, the spare storage tank 12 is directly used to make a new coolant concentration ratio according to the coolant concentration adjustment value;

[0110] When the original solution content difference L 差 When it is positive, the required coolant volume V in the common storage tank is 需 The volume V of the coolant in the common storage tank 需 Calculate the coolant volume difference and mark it as V 差 ;

[0111] When the original solution content difference L 差 ≤ Coolant volume difference V 差 When the spare storage tank 12 is not used, the coolant concentration in the common storage tank is adjusted directly by using the coolant ratio algorithm set in the PLC controller 15; specifically:

[0112] When the cutting temperature difference MW collected in the acquisition module takes a positive value, positive adjustment is performed, that is, the concentration of the coolant is concentrated;

[0113] The coolant concentration in the common storage tank is concentrated by using the coolant ratio algorithm set in the PLC controller 15, so that the coolant concentration in the common storage tank after adjustment is greater than the coolant concentration in the common storage tank;

[0114] When the cutting temperature difference MW collected in the acquisition module takes a negative value, negative adjustment is performed, that is, dilution of the coolant concentration;

[0115] Similarly, the coolant ratio algorithm set in the PLC controller 15 is used to concentrate the coolant concentration in the common storage tank, so that the coolant concentration in the common storage tank after adjustment is less than the coolant concentration in the common storage tank;

[0116] When the original solution content difference L 差 >Coolant volume difference V 差 When the coolant concentration is adjusted, the spare storage tank 12 is directly used to adjust the coolant concentration ratio according to the coolant concentration adjustment value;

[0117] Specifically: the conversion valve 9 is controlled by the PLC controller 15, and the discharge port of the conversion valve 9 is connected to a branch pipe 10 of a spare storage box 12 to discharge the coolant in the collection pipe 8 into the spare storage box 12;

[0118] Obtain the required coolant volume in the spare storage tank 12, calculate the original liquid content and tap water content in the coolant through the coolant concentration adjustment value obtained in the acquisition module, and use the electromagnetic ball valve 6 and the original liquid diaphragm pump 5 to quantitatively drive the original liquid and tap water content into the spare storage tank 12, and connect the existing coolant spray pipe to this spare storage tank 12 for use.

[0119] The correction module is used to obtain the data of the control components and the collection components in the automatic proportioning module, and to perform verification and calibration;

[0120] A verification cycle is set, and when the verification time is reached, the discharge volumes of the electromagnetic ball valve 6 and the stock liquid diaphragm pump 5 are first summarized, and the total amount of the coolant synthesized by the stock liquid and tap water is detected with the liquid level meter 14 in the coolant storage tank 11, and the amount detected by the liquid level meter 14 is compared with the sum of the discharge volumes of the electromagnetic ball valve 6 and the stock liquid diaphragm pump 5, the difference is determined, and the actual difference is compared with the preset difference threshold value, when the actual difference value is greater than the preset difference threshold value, a warning operation is performed; when the actual difference value is less than or equal to the preset difference threshold value, a calibration operation is performed;

[0121] The warning operation includes the following steps: draining the coolant in the coolant storage tank 11, and using the electromagnetic ball valve 6 and the raw liquid diaphragm pump 5 to drain the raw liquid and tap water separately, and using the liquid level meter 14 in the coolant storage tank 11 to detect the amount of raw liquid and tap water discharged separately, when the two detection results are different from the discharge amount results of the electromagnetic ball valve 6 and the raw liquid diaphragm pump 5, it is predicted that the liquid level meter 14 is faulty; when only one detection result is different, it is predicted that the electromagnetic ball valve 6 is faulty or the raw liquid diaphragm pump 5 is faulty;

[0122] After the prediction result is determined, the prediction result and warning signal are sent to the administrator terminal, so that the administrator can find the fault point in the first time;

[0123] The calibration operation includes the following steps: verifying the coolant volume in the coolant storage tank 11, and when the volume is less than the required volume, replenishing the coolant storage tank with original liquid or tap water to correct the coolant volume in the coolant storage tank 11;

[0124] The specific replenishment is to detect the concentration of the coolant through the concentration meter 13 in the coolant storage tank 11 to obtain the actual concentration. When the actual concentration is less than the preset concentration, the coolant storage tank is replenished with a quantitative amount of original liquid; when the actual concentration is greater than the preset concentration, the coolant storage tank is replenished with a quantitative amount of tap water, so that the volume of the coolant in the coolant storage tank 11 is corrected.

[0125] 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. An automatic proportioning and adding system for machining, characterized in that: include: Automatic proportioning module, used for automatically proportioning the coolant; The automatic proportioning module comprises a coolant storage tank (11), a PLC controller (15) and a collecting element; The collecting element includes a plurality of concentration meters (13) and liquid level meters (14), all of which are electrically connected to a PLC controller (15) and are used to detect the concentration of the coolant and the amount of coolant stored; A coolant ratio algorithm is provided in the PLC controller (15) for determining the amount of stock liquid and tap water to be added to achieve the required coolant concentration, and the PLC controller (15) controls the execution of the addition process; Also includes: A collection module is used to collect coolant usage data and analyze coolant concentration adjustment values; The control module obtains the coolant concentration adjustment value calculated in the acquisition module and automatically adjusts the coolant concentration; The specific operation steps of the control module to automatically adjust the concentration of the coolant through the coolant concentration adjustment value are as follows: Obtain the coolant concentration P in the coolant storage tank (11) in the automatic proportioning module 存 and the existing coolant volume V 需 , and calculated by formula L 存 =V 存 *P 存 Get the existing coolant original liquid content L 存 ; At the same time, obtain the required coolant volume V in the coolant storage tank (11) 需 ; Then obtain the coolant concentration adjustment value in the acquisition module and calibrate it as P 调 ; Using the formula L 调 =V 需 *P 调 , get the original liquid content L after the coolant is adjusted 调 ; The calculated coolant adjusted original liquid content L 调 Subtract the existing coolant original liquid content L 存 Get the difference in the original solution content and calibrate it as L 差 ; When the original solution content difference L 差 When it is a negative value, the coolant storage tank (11) is directly used to make a new coolant concentration ratio according to the coolant concentration adjustment value; When the original solution content difference L 差 When the value is positive, the required coolant volume V of the coolant storage tank (11) is 需 With the existing coolant volume V 需 Calculate the coolant volume difference and mark it as V 差 ; When the original solution content difference L 差 ≤ Coolant volume difference V 差 When the coolant concentration in the coolant storage tank (11) is adjusted by using the coolant ratio algorithm set in the PLC controller (15); specifically: When the cutting temperature difference MW collected in the acquisition module takes a positive value, positive adjustment is performed, that is, the concentration of the coolant is concentrated; Using a coolant ratio algorithm set in a PLC controller (15) to concentrate the coolant concentration in the coolant storage tank (11), so that the adjusted coolant concentration is greater than the original coolant concentration; When the cutting temperature difference MW collected in the acquisition module takes a negative value, negative adjustment is performed, that is, dilution of the coolant concentration; Similarly, the coolant ratio algorithm set in the PLC controller (15) is used to concentrate the coolant concentration in the coolant storage tank (11), so that the adjusted coolant concentration is less than the original coolant concentration; When the original solution content difference L 差 >Coolant volume difference V 差 When the coolant concentration is adjusted, the coolant storage tank (11) is directly used to make a new coolant concentration ratio according to the coolant concentration adjustment value.

2. The automatic proportioning and adding system for machining according to claim 1, characterized in that: The coolant ratio algorithm in the PLC controller (15) includes: The concentration and content of the coolant in the coolant storage tank (11) are obtained by using a concentration meter (13) and a liquid level meter (14) in the coolant storage tank (11); Then obtain the required coolant concentration and coolant standard volume, and mark them as P respectively. 需 and V 需 ; The existing coolant concentration is marked as P 存 , the existing coolant volume is marked as V 存 , and by calculating the formula L 存 =V 存 *P 存 Get the existing coolant original liquid content L 存 ; When P 需 =P 存 Or the existing coolant concentration P 存 and the required coolant concentration P 需 When the difference is less than the preset difference, the formula V 加 =V 需 -V 存 Get the coolant addition volume V 加 ; Then use the formula: L 加 =V 加 *P 需 and W 加 =V 加 -L 加 , respectively get the amount of added stock solution L 加 And the amount of tap water added W 加 ; When P 需 >P 存 And the existing coolant concentration P 存 and the required coolant concentration P 需 When the difference is greater than the preset difference, the calculation formula is: L 加 =V 需 *P 需 -L 存 and W 加 =V 需 -V 存 -L 加 The amount of added stock solution L is obtained respectively 加 And the amount of tap water added W 加 ; When P 需 <P 存 And the existing coolant concentration P 存 and the required coolant concentration P 需 When the difference is greater than the preset difference, the calculation formula is also used: L 加 =V 需 *P 需 -L 存 and W 加 =V 需 -V 存 -L 加 The amount of added stock solution L is obtained respectively 加 And the amount of tap water added W 加 ; The PLC controller calculates the amount of added stock liquid L according to the coolant ratio algorithm 加 And the amount of tap water added W 加 , control the addition of corresponding amounts of raw liquid and tap water into the coolant storage tank (11).

3. The automatic proportioning and adding system for machining according to claim 2, characterized in that: The coolant storage tank (11) is provided with a common storage tank and a plurality of spare storage tanks (12). The specific operation steps of the control module for automatically adjusting the concentration of the coolant through the coolant concentration adjustment value are as follows: Obtain the coolant concentration P in the common storage tank in the coolant storage tank (11) in the automatic proportioning module 存 and the existing coolant volume V 需 , and calculated by formula L 存 =V 存 *P 存 Get the existing coolant original liquid content L 存 ; At the same time, obtain the required coolant volume V in the common storage tank 需 ; Then obtain the coolant concentration adjustment value in the acquisition module and calibrate it as P 调 ; Using the formula L 调 =V 需 *P 调 , get the original liquid content L after the coolant is adjusted 调 ; The calculated coolant adjusted original liquid content L 调 Subtract the existing coolant original liquid content L 存 Get the difference in the original solution content and calibrate it as L 差 ; When the original solution content difference L 差 When it is a negative value, the spare storage tank (12) is directly used to make a new coolant concentration ratio according to the coolant concentration adjustment value; When the original solution content difference L 差 When it is positive, the required coolant volume V in the common storage tank is 需 The volume V of the coolant in the common storage tank 需 Calculate the coolant volume difference and mark it as V 差 ; When the original solution content difference L 差 ≤ Coolant volume difference V 差 When the spare storage tank (12) is not used, the coolant concentration in the common storage tank is adjusted directly by using the coolant ratio algorithm set in the PLC controller (15); specifically: When the cutting temperature difference MW collected in the acquisition module takes a positive value, positive adjustment is performed, that is, the concentration of the coolant is concentrated; Using a coolant ratio algorithm set in a PLC controller (15) to concentrate the coolant concentration in the common storage tank, so that the coolant concentration in the common storage tank after adjustment is greater than the coolant concentration in the common storage tank; When the cutting temperature difference MW collected in the acquisition module takes a negative value, negative adjustment is performed, that is, dilution of the coolant concentration; Similarly, the coolant ratio algorithm set in the PLC controller (15) is used to concentrate the coolant concentration in the common storage tank, so that the coolant concentration in the common storage tank after adjustment is less than the coolant concentration in the common storage tank; When the original solution content difference L 差 >Coolant volume difference V 差 When the coolant concentration is adjusted, the spare storage tank (12) is directly used to make a new coolant concentration ratio according to the coolant concentration adjustment value.

4. The automatic proportioning and adding system for machining according to claim 1, characterized in that: The coolant storage tank (11) is used to store the proportioned coolant; The automatic proportioning module also includes a delivery pipeline and a control element. The delivery pipeline includes a raw liquid delivery pipe (4) and a tap water delivery pipe (3). The raw liquid delivery pipe (4) and the tap water delivery pipe (3) are respectively provided with control elements. The control elements are electrically connected to a PLC controller (15) and are used to control the discharge volume and speed of the raw liquid and tap water.

5. The automatic proportioning and adding system for machining according to claim 4, characterized in that: It also includes a correction module, which is used to obtain data of the control components and the collection components in the automatic proportioning module, and to verify and calibrate the coolant proportion of the automatic proportioning module; the specific operation steps are as follows: A verification cycle is set, and when the verification time is reached, the discharge amount of the control elements on the raw liquid delivery pipe (4) and the tap water delivery pipe (3) is summarized, and the total amount of the coolant synthesized from the raw liquid and the tap water is detected with the liquid level meter (14) in the coolant storage tank (11); Then, the amount detected by the liquid level meter (14) is compared with the sum of the discharge amounts of the control elements on the raw liquid delivery pipe (4) and the tap water delivery pipe (3), the difference is determined, and the actual difference is compared with a preset difference threshold; When the actual difference is greater than the preset difference threshold, a warning operation is performed; When the actual difference is less than or equal to the preset difference threshold, a calibration operation is performed.

6. The automatic proportioning and adding system for machining according to claim 5, characterized in that: The specific operation steps of the warning operation in the correction module are as follows: First, the coolant in the coolant storage tank (11) is drained; and the control elements on the raw liquid delivery pipe (4) and the tap water delivery pipe (3) are used to drain the raw liquid and the tap water separately; At the same time, the liquid level meter (14) in the coolant storage tank (11) is used to detect the amount of the raw liquid and tap water discharged separately; When the two detection results are different from the discharge volume results of the control elements on the raw liquid delivery pipe (4) and the tap water delivery pipe (3), it is predicted that the liquid level meter (14) is faulty; When only one of the detection results is different, it is pre-judged that a control element on the raw liquid delivery pipe (4) is faulty or a control element on the tap water delivery pipe (3) is faulty; After the prediction result is determined, the prediction result and warning signal are sent to the administrator terminal.

7. The automatic proportioning and adding system for machining according to claim 6, characterized in that: The specific operation steps of the calibration operation in the correction module are as follows: First, the volume of the coolant in the coolant storage tank (11) is verified. If the volume is less than the required volume, the coolant storage tank is supplemented with original liquid or tap water to correct the volume of the coolant in the coolant storage tank (11); Specifically: replenishing the coolant by detecting the concentration of the coolant through a concentration meter (13) in the coolant storage tank (11) to obtain a measured concentration, and when the measured concentration is less than a preset concentration, replenishing a quantitative amount of stock solution in the coolant storage tank; When the measured concentration is greater than the preset concentration, a quantitative amount of tap water is added to the coolant storage tank, thereby correcting the volume of the coolant in the coolant storage tank (11).

8. The automatic proportioning and adding system for machining according to claim 4, characterized in that: The control element comprises a one-way valve (7), an electromagnetic ball valve (6) and a raw liquid diaphragm pump (5); The one-way valve (7) is arranged on the raw liquid delivery pipe (4) and the tap water delivery pipe (3) to prevent the cooling liquid from flowing back and causing contamination of the raw liquid or tap water; The electromagnetic ball valve (6) and the raw liquid diaphragm pump (5) are respectively arranged on the tap water delivery pipe (3) and the raw liquid delivery pipe (4), and are both electrically connected to the PLC controller (15) for controlling the discharge volume and speed of the raw liquid and tap water.

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