CN114770205A - Numerical control machine tool based on digital twinning technology - Google Patents
Numerical control machine tool based on digital twinning technology Download PDFInfo
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- CN114770205A CN114770205A CN202210705540.4A CN202210705540A CN114770205A CN 114770205 A CN114770205 A CN 114770205A CN 202210705540 A CN202210705540 A CN 202210705540A CN 114770205 A CN114770205 A CN 114770205A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/72—Auxiliary arrangements; Interconnections between auxiliary tables and movable machine elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
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Abstract
The invention discloses a numerical control machine tool based on a digital twin technology, which comprises a numerical control machine tool, wherein two sides of the numerical control machine tool are provided with waste discharge ports, a fixed frame is fixedly arranged at the upper end inside the numerical control machine tool, a circulating air pump is arranged outside the fixed frame, a horizontal frame is fixedly arranged on one side of the fixed frame, a rotating motor is arranged on one side of the horizontal frame, a cutter rest is arranged at the lower side of the fixed frame, a cutting fluid pump is arranged at one side of the rotating motor, the lower end of the interior of the numerical control machine tool is provided with a base, two sides of the upper end of the base are provided with slide rails, a telescopic cylinder is arranged in the middle of the upper end of the base, a processing platform is arranged at the upper end of the slide rail, the automatic cutting machine is characterized in that the automatic cutting machine has the characteristics of splashing prevention and cutting fluid spraying rate self-adaption.
Description
Technical Field
The invention relates to the technical field of wind speed control systems, in particular to a numerical control machine tool based on a digital twin technology.
Background
The numerical control machine tool is a digital control machine tool for short, and is an automatic machine tool provided with a program control system. The control system is capable of logically processing and decoding a program defined by a control code or other symbolic instructions, represented by coded numbers, which are input to the numerical control device via the information carrier. After operation, the numerical control device sends out various control signals to control the action of the machine tool, and the parts are automatically machined according to the shape and size required by the drawing.
The existing digital twin technology is an easy simulation technology, whether a workpiece can be processed as expected after a program is input is judged, the existing numerical twin technology with the function of splashing waste affects the processing precision, the waste is splashed uncertainties, so that the waste exists in required places inside the numerical control machine, the use precision and the service life of the numerical control machine are greatly reduced, and the existing numerical control machine cannot control the spraying rate of cutting fluid to adapt to the heating condition of the workpiece
Therefore, it is necessary to design a numerical control machine tool based on a digital twin technique that is resistant to splashing and adaptive to the spraying rate of cutting fluid.
Disclosure of Invention
The invention aims to provide a numerical control machine tool based on a digital twin technology, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a digit twin technique based digit control machine tool, includes digit control machine tool, its characterized in that: the automatic cutting machine is characterized in that waste discharge ports are formed in two sides of the numerical control machine, a fixing frame is fixedly mounted at the upper end inside the numerical control machine, a circulating air pump is arranged on the outer side of the fixing frame, a horizontal frame is fixedly mounted at one side of the fixing frame, a rotating motor is arranged at one side of the horizontal frame, a knife rest is arranged at the lower side of the fixing frame, a cutting liquid pump is arranged at one side of the rotating motor, a base is arranged at the lower end inside the numerical control machine, slide rails are arranged on two sides of the upper end of the base, a telescopic cylinder is arranged in the middle of the upper end of the base, a processing platform is arranged at the upper end of the slide rails, inclined baffle plates are arranged at two ends of the processing platform, waste discharge holes are formed in the lower ends of the inner sides of the inclined baffle plates and are connected with a waste discharge port pipeline, a processing motor is arranged on the processing platform, and a triangular clamping jaw is arranged at one side of the processing motor, the inside laminating of triangle clamping jaw has the work piece.
According to the technical scheme, the system used by the numerical control machine tool is a machine tool control system, the machine tool control system comprises a splash detection module, a pumping module, a cutting fluid module, a dehumidification module and a compensation module, the splash detection module is electrically connected with the cutting fluid module, and the splash detection module is electrically connected with the cutting fluid module;
the splash detection module is used for detecting various parameters in cutting, the pumping module is used for pumping air to generate a wind field, the cutting module is used for spraying cutting fluid, the dehumidification module is used for controlling the humidity inside the numerical control machine, and the compensation module is used for recovering the cutting fluid.
According to the technical scheme, the splash detection module comprises a rotating speed detection unit and an input module, the pumping module comprises a calculation unit and an air injection unit, the rotating speed detection unit and the input module are both electrically connected with the calculation unit, the air injection unit is electrically connected with the calculation unit, and the air injection unit is electrically connected with the circulation air pump;
the rotating speed detection unit is used for detecting the rotating speed of the workpiece, the input module is used for inputting the feeding distance and the material of the workpiece, the calculation unit is used for obtaining the wind speed according to the detected factors, and the air injection unit is used for injecting wind with a certain wind speed.
According to the technical scheme, the cutting fluid module comprises a temperature detection unit and a liquid spraying unit, the dehumidifying module comprises a humidity detection unit and a control unit, the compensating module comprises a recovery unit and a compensating unit, the temperature detection unit is electrically connected with the liquid spraying unit, the humidity detection unit is electrically connected with the control unit, and the compensating module is electrically connected with the recovery unit;
the temperature detection unit is used for detecting the temperature of the triangular clamping jaw attached to the workpiece, the liquid spraying unit is used for spraying cutting liquid, the humidity detection unit is used for detecting the humidity inside the numerical control machine, the control unit is used for controlling the temperature of one side, close to the machining platform, of the inclined baffle plate, the recovery module is used for recovering waste materials and performing solid-liquid separation, and the compensation unit is used for enabling the concentration of waste liquid obtained by the solid-liquid separation to be consistent with that of original cutting liquid.
According to the technical scheme, the working process of the machine tool control system comprises the following steps:
s1: after clamping the workpiece, inputting a corresponding machining program;
s2: firstly, the numerical control machine carries out simulation analysis on the machining process according to a machining program to ensure that the machined part is a desired part;
s3: after the simulation of the numerical control machine tool is finished, judging that the numerical control machine tool can be processed, and processing according to a program input in advance;
s4: detecting the rotating speed of the workpiece, and determining the feeding distance and the material of the workpiece according to the parameters input in advance;
s5: adjusting the wind speed output by the circulation air pump in real time according to the parameters input in advance;
s6: predicting the temperature of the workpiece according to the temperature of the triangular clamping jaw, and further adjusting the spraying speed of the cutting fluid in real time;
s7: controlling the temperature of one side, close to the processing platform, of the inclined baffle plate according to the humidity in the numerical control machine tool, so that the water in the numerical control machine tool can be condensed on one side, close to the processing platform, of the inclined baffle plate;
s8: and (3) performing solid-liquid separation on impurities from the waste discharge port, judging the separated liquid, and discharging the liquid back to the cutting liquid pump after the liquid reaches the standard so as to realize the recycling of the cutting liquid.
According to the above technical solution, in step S5, in order to ensure that the waste material generated by cutting cannot splash outside the bevel gear plate, it is necessary to ensure that the height of the waste material is lower than the height of the left and right edges of the bevel gear plate before the waste material touches the left and right edges of the bevel gear plate, the feed depth affects the thickness of the waste material, and when the waste material is thicker, the influence of the wind speed on the cutting speed is smaller, the density of the waste material is larger, the influence of the waste material on the cutting speed is smaller, the rotating speed is faster, the kinetic energy when the waste material splashes out is larger, the kinetic loss generated in the collision process of the waste material and the cutting fluid with the cutter is ignored, and when the waste material is collided out at an angle of 45 °, the wind speed range can be obtained through calculation;
the wind speed V should satisfy the following formula:
in the formula: l is the horizontal distance between the workpiece and the edge of the inclined baffle plate, P is the air density, H is the feeding depth, g is the gravity acceleration,
the speed of the waste material can be calculated by the rotating speed of the workpiece and the perimeter of the workpiece,
the height difference between the left edge and the right edge of the inclined baffle plate and the workpiece is obtained;
the minimum wind speed V can be obtained through the calculation formula as follows:
the cutting is regarded as a cuboid in the calculation formula and is kept horizontal all the time in the moving process, and the kinetic energy loss caused by collision and cutting fluid to the cutting is ignored, so that the safety factor is not required to be multiplied, and the protection range that the cutting is not enough to splash out of the inclined baffle plate is ensured.
According to the technical scheme, in the step S6, the temperature of the workpiece is predicted according to the temperature rising rate of the triangular clamping jaw, the temperature of the workpiece is further determined because the heat transmission rate is related to the temperature difference, the cooling spraying speed of the cutting fluid is determined according to the temperature of the workpiece, and the higher the temperature is, the higher the spraying speed of the cutting fluid is;
temperature of workpiece
The calculation formula of (c) is:
in the formula:
is the thermal resistance between the workpiece and the triangular clamping jaw,
is the specific heat capacity of the triangular clamping jaw, m is the mass of the triangular clamping jaw,
the time is a period of time, and the time is,
the initial temperature of the triangular clamping jaw is set,
the temperature of the triangular clamping jaw after a period of time;
further, the cutting fluid can be obtained according to the following calculation formula
：
In the formula:
is at room temperature and is in a state of being,
is a scaling factor.
According to the above technical solution, the step S8 further includes the following steps:
s81: solid-liquid separation is realized by filtering, so that cutting fluid in the waste is separated;
s82: judging the density of the separated cutting fluid, and when the density of the separated cutting fluid is greater than that of the normal cutting fluid, judging metal particles mixed in the cutting fluid, and performing further filtration;
s83: after the density of the cutting fluid is recovered to be normal after filtration, the concentration of the cutting fluid is analyzed through a spectrum analyzer, and material supplementing is carried out according to the concentration, so that the cutting fluid is ensured to be recovered to the standard before practical use.
According to the above technical solution, the step S82 further includes the following steps:
s821: discharging the cutting fluid after solid-liquid separation into a specific container, and measuring the weight of the container into which the cutting fluid is introduced;
s822: identifying the height of the cutting fluid in a specific solution through laser, and further determining the volume of the cutting fluid;
s823: obtaining the density of the cutting fluid through the volume and the weight, discharging the cutting fluid for filtering when the density is greater than the density of the marked cutting fluid, repeating the steps S821-S823, wherein the precision of a filter screen used for filtering is higher each time the circulation is performed, so that the cutting fluid is ensured to be filtered completely while the filter screen is prevented from being blocked
According to the technical scheme, the outer side of the triangular clamping jaw is provided with an anti-skidding coating.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, the anti-splashing wind speed can be determined according to the factors such as the type of the workpiece, the cutting speed and the like, so that the splashed waste can not fly out of a protection area under the action of gravity and the dynamic pressure of the anti-splashing wind, the spraying rate of the cutting fluid can be controlled in real time according to the heating rate of the workpiece, and the influence of overheating of the workpiece on the processing precision is avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic overall perspective view of the present invention;
FIG. 2 is a schematic view showing the internal structure of the numerical control machine tool of the present invention;
FIG. 3 is a schematic block diagram of the present invention;
in the figure: 1. a numerical control machine; 101. a circulation air pump; 102. a fixed mount; 103. a tool holder; 104. a horizontal frame; 105. a cutting fluid pump; 106. a processing platform; 107. a telescopic cylinder; 108. an inclined baffle plate; 109. a slide rail; 110. a base; 2. a waste discharge port.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a digit twin technology-based digit control machine tool, includes digit control machine tool 1, its characterized in that: the automatic waste discharge device comprises a numerical control machine tool 1, waste discharge ports 2 are arranged on two sides of the numerical control machine tool 1, a fixed frame 102 is fixedly mounted at the upper end inside the numerical control machine tool 1, a circulating air pump 101 is arranged on the outer side of the fixed frame 102, a horizontal frame 104 is fixedly mounted on one side of the fixed frame 102, a rotating motor is arranged on one side of the horizontal frame 104, a tool rest 103 is arranged on the lower side of the fixed frame 102, a cutting liquid pump 105 is arranged on one side of the rotating motor, a base 110 is arranged at the lower end inside the numerical control machine tool 1, slide rails 109 are arranged on two sides of the upper end of the base 110, a telescopic air cylinder 107 is arranged in the middle of the upper end of the base 110, a processing platform 106 is arranged at the upper end of the slide rails 109, inclined baffle plates 108 are arranged at two ends of the processing platform 106, waste discharge holes are formed in the lower ends of the inner sides of the inclined baffle plates 108 and are connected with the waste discharge ports 2 in a pipeline, a processing motor is provided with a triangular clamping jaw, and a workpiece is attached to the interior of the triangular clamping jaw; the rotation motor can drive the angle of the cutting fluid pump 105 to deflect, so that the cutting fluid pump 105 is opposite to a workpiece, the telescopic cylinder 107 can drive the machining platform 106 to move, the machining motor can drive the triangular clamping jaw to rotate, further the workpiece is driven to rotate, machining is completed, all waste materials are blocked at the inner sides of the two inclined baffles 108, and further the waste materials are discharged from the waste discharge port 2 under the drive of air flow.
The system used by the numerical control machine tool 1 is a machine tool control system, the machine tool control system comprises a splash detection module, a pumping module, a cutting fluid module, a dehumidification module and a compensation module, the splash detection module is electrically connected with the cutting fluid module, and the splash detection module is electrically connected with the cutting fluid module;
the effect of detection module that splashes lies in detecting each parameter in the cutting, and the effect of pumping module lies in the pump sending air, produces the wind field, and the effect of cutting module lies in spraying the cutting fluid, and the effect of dehumidification module lies in controlling the inside humidity of digit control machine tool 1, and the effect of compensation module lies in retrieving the cutting fluid.
The splashing detection module comprises a rotating speed detection unit and an input module, the pumping module comprises a calculation unit and an air injection unit, the rotating speed detection unit and the input module are both electrically connected with the calculation unit, the air injection unit is electrically connected with the calculation unit, and the air injection unit is electrically connected with the circulation air pump 101;
the rotating speed detection unit is used for detecting the rotating speed of the workpiece, the input module is used for inputting the feeding distance and the material of the workpiece, the calculation unit is used for obtaining the wind speed according to the detected factors, and the air injection unit is used for injecting wind with a certain wind speed.
The cutting fluid module comprises a temperature detection unit and a liquid spraying unit, the dehumidifying module comprises a humidity detection unit and a control unit, the compensation module comprises a recovery unit and a compensation unit, the temperature detection unit is electrically connected with the liquid spraying unit, the humidity detection unit is electrically connected with the control unit, and the compensation module is electrically connected with the recovery unit;
the temperature detection unit is used for detecting the temperature of the triangular clamping jaw attached to the workpiece, the liquid spraying unit is used for spraying cutting liquid, the humidity detection unit is used for detecting the humidity inside the numerical control machine tool 1, the control unit is used for controlling the temperature of one side, close to the machining platform 106, of the inclined baffle plate 108, the recovery module is used for recovering waste materials and performing solid-liquid separation, and the compensation unit is used for enabling the concentration of waste liquid obtained through solid-liquid separation to be consistent with that of original cutting liquid.
The working process of the machine tool control system comprises the following steps:
s1: after clamping the workpiece, inputting a corresponding machining program;
s2: firstly, the numerical control machine 1 carries out simulation analysis on the machining process according to a machining program to ensure that the machined part is a desired part;
s3: after the simulation of the numerical control machine tool 1 is finished, judging that the machining can be carried out, and then carrying out the machining according to a program input in advance;
s4: detecting the rotating speed of the workpiece, and determining the feeding distance and the material of the workpiece according to the parameters input in advance;
s5: adjusting the wind speed output by the circulation air pump 101 in real time according to the parameters input in advance;
s6: predicting the temperature of the workpiece according to the temperature of the triangular clamping jaw, and further adjusting the spraying speed of the cutting fluid in real time;
s7: controlling the temperature of the side, close to the processing platform 106, of the inclined baffle 108 according to the humidity inside the numerical control machine 1, so that the moisture inside the numerical control machine 1 can be condensed on the side, close to the processing platform 106, of the inclined baffle 108;
s8: and (3) performing solid-liquid separation on impurities from the waste discharge port 2, judging the separated liquid, and discharging the liquid back to the cutting liquid pump 105 when the liquid reaches the standard, so that the cutting liquid is recycled.
In the step S5, in order to ensure that the waste generated by cutting cannot splash outside the inclined baffle 108, it is necessary to ensure that the height of the waste is already lower than the height of the left and right edges of the inclined baffle 108 before the waste touches the left and right edges of the inclined baffle 108, the feed depth affects the thickness of the waste, and when the waste is thicker, the influence of the wind speed on the cutting speed is smaller, the density of the waste is larger, the influence of the waste on the cutting speed is smaller, the rotating speed is faster, the kinetic energy when the waste splashes out is larger, the kinetic loss generated in the collision process of the waste and the cutting fluid with the cutter is ignored, and when the waste is known to collide at an angle of 45 °, the wind speed range can be obtained according to calculation;
the wind speed V should satisfy the following equation:
in the formula: l is the horizontal distance of the workpiece from the edge of the bevel baffle 108, and P is the air sealDegree, H is the feed depth, g is the acceleration of gravity,
the speed of the waste material can be calculated by the rotating speed of the workpiece and the perimeter of the workpiece,
is the height difference between the left and right edges of the bevel baffle 108 and the workpiece;
the minimum wind speed V can be obtained by the calculation formula as follows:
the calculations show that the cut is considered as a rectangular parallelepiped and is kept horizontal during the movement, and since the kinetic energy losses of the cut due to collision and cutting fluid are ignored, no safety factor needs to be multiplied to ensure that the cut is not sufficient to spill out of the protective range of the deflector 108.
In the step S6, the temperature of the workpiece is predicted according to the temperature increase rate of the triangular clamping jaw, the temperature of the workpiece is determined because the heat transfer rate is related to the temperature difference, the cooling spraying speed of the cutting fluid is determined according to the temperature of the workpiece, and the spraying speed of the cutting fluid is increased as the temperature is higher.
Temperature of workpiece
The calculation formula of (A) is as follows:
in the formula:
is the thermal resistance between the workpiece and the triangular clamping jaw,
is the specific heat capacity of the triangular clamping jaw, m is the mass of the triangular clamping jaw,
the time is a period of time,
the initial temperature of the triangular clamping jaw is set,
the temperature of the triangular clamping jaw after a period of time;
further, the cutting fluid can be obtained according to the following calculation formula
：
In the formula:
the temperature of the mixture is room temperature,
is a proportionality coefficient;
the step S8 further includes the following steps:
s81: solid-liquid separation is realized by filtering, so that cutting fluid in the waste is separated;
s82: judging the density of the separated cutting fluid, and when the density of the separated cutting fluid is greater than that of the normal cutting fluid, judging metal particles mixed in the cutting fluid, and performing further filtration;
s83: after the density of the cutting fluid is recovered to normal after filtration, analyzing the concentration of the cutting fluid by a spectrum analyzer, and supplementing materials according to the concentration to ensure that the cutting fluid is recovered to the standard before practical use;
the step S82 further includes the following steps:
s821: discharging the cutting fluid subjected to solid-liquid separation into a specific container, and measuring the weight of the container into which the cutting fluid is introduced;
s822: identifying the height of the cutting fluid in a specific solution through laser, and further determining the volume of the cutting fluid;
s823: and obtaining the density of the cutting fluid through the volume and the weight, discharging the cutting fluid for filtering when the density is greater than the density of the marked cutting fluid, repeating the steps S821-S823, and ensuring that the cutting fluid is completely filtered when the precision of a filter screen used for filtering is higher every time the filter screen is circulated once.
And an anti-skid coating is arranged on the outer side of the triangular clamping jaw.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A digit twin technology based digit control machine tool, includes digit control machine tool (1), its characterized in that: the waste discharge port (2) is arranged on two sides of the numerical control machine tool (1), a fixing frame (102) is fixedly mounted at the upper end inside the numerical control machine tool (1), a circulating air pump (101) is arranged on the outer side of the fixing frame (102), a horizontal frame (104) is fixedly mounted on one side of the fixing frame (102), a rotating motor is arranged on one side of the horizontal frame (104), a tool rest (103) is arranged on the lower side of the fixing frame (102), a cutting liquid pump (105) is arranged on one side of the rotating motor, a base (110) is arranged at the lower end inside the numerical control machine tool (1), slide rails (109) are arranged on two sides of the upper end of the base (110), a telescopic cylinder (107) is arranged in the middle of the upper end of the base (110), a processing platform (106) is arranged on the upper end of the slide rails (109), and baffle plates (108) are arranged at two ends of the processing platform (106), the inboard lower extreme of inclined baffle (108) is provided with the waste discharge hole, waste discharge hole and waste discharge opening (2) pipe connection, be provided with the processing motor on processing platform (106), one side of processing motor is provided with the triangle clamping jaw, the inside laminating of triangle clamping jaw has the work piece.
2. The numerical control machine tool based on the digital twinning technology as claimed in claim 1, characterized in that: the system used by the numerical control machine tool (1) is a machine tool control system, the machine tool control system comprises a splash detection module, a pumping module, a cutting fluid module, a dehumidification module and a compensation module, the splash detection module is electrically connected with the cutting fluid module, and the splash detection module is electrically connected with the cutting fluid module;
the splash detection module is used for detecting various parameters in cutting, the pumping module is used for pumping air to generate a wind field, the cutting module is used for spraying cutting fluid, the dehumidification module is used for controlling the humidity inside the numerical control machine (1), and the compensation module is used for recovering the cutting fluid.
3. A numerically controlled machine tool based on digital twinning technology, as claimed in claim 2, wherein: the splash detection module comprises a rotating speed detection unit and an input module, the pumping module comprises a calculation unit and an air injection unit, the rotating speed detection unit and the input module are both electrically connected with the calculation unit, the air injection unit is electrically connected with the calculation unit, and the air injection unit is electrically connected with the circulation air pump (101);
the rotating speed detection unit is used for detecting the rotating speed of the workpiece, the input module is used for inputting the feeding distance and the material of the workpiece, the calculation unit is used for obtaining the wind speed according to the detected factors, and the air injection unit is used for injecting wind with a certain wind speed.
4. A numerically controlled machine tool based on digital twinning technology as claimed in claim 3, wherein: the cutting fluid module comprises a temperature detection unit and a liquid spraying unit, the dehumidifying module comprises a humidity detection unit and a control unit, the compensation module comprises a recovery unit and a compensation unit, the temperature detection unit is electrically connected with the liquid spraying unit, the humidity detection unit is electrically connected with the control unit, and the compensation module is electrically connected with the recovery unit;
the temperature detection unit is used for detecting the temperature of the triangular clamping jaw attached to the workpiece, the liquid spraying unit is used for spraying cutting liquid, the humidity detection unit is used for detecting the humidity inside the numerical control machine tool (1), the control unit is used for controlling the temperature of one side, close to the machining platform (106), of the inclined baffle plate (108), the recovery module is used for recovering waste materials and performing solid-liquid separation, and the compensation unit is used for enabling the concentration of waste liquid obtained by the solid-liquid separation to be consistent with that of original cutting liquid.
5. A numerical control machine tool based on digital twinning technology according to claim 4, characterized in that: the working process of the machine tool control system comprises the following steps:
s1: after clamping the workpiece, inputting a corresponding machining program;
s2: firstly, the numerical control machine tool (1) carries out simulation analysis on a machining process according to a machining program to ensure that a machined part is a desired part;
s3: after the simulation of the numerical control machine tool (1) is finished, judging that the machining can be carried out, and then carrying out machining according to a program input in advance;
s4: detecting the rotating speed of the workpiece, and determining the feeding distance and the material of the workpiece according to the parameters input in advance;
s5: adjusting the wind speed output by the circulation air pump (101) in real time according to the parameters input in advance;
s6: predicting the temperature of the workpiece according to the temperature of the triangular clamping jaw, and further adjusting the spraying speed of the cutting fluid in real time;
s7: controlling the temperature of one side, close to the machining platform (106), of the inclined baffle plate (108) according to the humidity inside the numerical control machine tool (1), so that the moisture inside the numerical control machine tool (1) can be condensed on one side, close to the machining platform (106), of the inclined baffle plate (108);
s8: and (3) performing solid-liquid separation on impurities from the waste discharge port (2), judging the separated liquid, and discharging the liquid back to the cutting liquid pump (105) when the liquid reaches the standard so as to realize the recycling of the cutting liquid.
6. A numerical control machine tool based on digital twinning technology according to claim 5, characterized in that: in step S5, in order to ensure that the waste material generated by cutting cannot splash to the outside of the inclined baffle plate (108), it is necessary to ensure that the height of the waste material is lower than the height of the left and right edges of the inclined baffle plate (108) before the waste material touches the left and right edges of the inclined baffle plate (108), the feed depth affects the thickness of the waste material, and when the waste material is thicker, the influence of the wind speed on the cutting speed is smaller, the density of the waste material is larger, the influence of the waste material on the cutting speed is smaller, the rotating speed is faster, the kinetic energy when the waste material splashes out is larger, the kinetic loss generated in the collision process of the waste material and the cutting fluid with the cutter is ignored, and when the waste material is known to collide at an angle of 45 °, the waste material can fly farthest, and the range of the wind speed can be obtained according to calculation;
the wind speed V should satisfy the following formula:
in the formula: l is the horizontal distance of the workpiece from the edge of the inclined baffle plate (108), P is the air density, H is the feed depth, g is the acceleration of gravity,
the speed of the waste material can be calculated by the rotating speed of the workpiece and the perimeter of the workpiece,
is the height difference between the left and right edges of the inclined baffle plate (108) and the workpiece;
the minimum wind speed V can be obtained through the calculation formula as follows:
the calculations show that the cuts are all rectangular and are kept horizontal during the movement, and the collision and the kinetic energy loss caused by the cutting fluid are ignored, so that the safety factor does not need to be multiplied, and the protection range of the bevel baffle plate (108) is ensured that the cuts are not enough to be splashed.
7. A numerical control machine tool based on digital twinning technology according to claim 6, characterized in that: in the step S6, the temperature of the workpiece is predicted according to the temperature increase rate of the triangular clamping jaw, the temperature of the workpiece is determined because the heat transfer rate is related to the temperature difference, the cooling spraying speed of the cutting fluid is determined according to the temperature of the workpiece, and the higher the temperature is, the higher the spraying speed of the cutting fluid is;
temperature of the workpiece
The calculation formula of (A) is as follows:
in the formula:
is the thermal resistance between the workpiece and the triangular clamping jaw,
is the specific heat capacity of the triangular clamping jaw, m is the mass of the triangular clamping jaw,
the time is a period of time,
is the initial temperature of the triangular clamping jaw,
the temperature of the triangular clamping jaw after a period of time;
further, the cutting fluid can be obtained from the following calculation formula
：
In the formula:
the temperature of the mixture is room temperature,
is a scale factor.
8. A numerically controlled machine tool based on digital twinning technology, as claimed in claim 7, wherein: the step S8 further includes the steps of:
s81: solid-liquid separation is realized by filtering, so that cutting fluid in the waste is separated;
s82: judging the density of the separated cutting fluid, and when the density of the separated cutting fluid is greater than that of the normal cutting fluid, judging metal particles mixed in the cutting fluid, and performing further filtration;
s83: after the density of the cutting fluid is recovered to be normal after being filtered, the concentration of the cutting fluid is analyzed through a spectrum analyzer, and the cutting fluid is supplemented according to the concentration, so that the cutting fluid is ensured to be recovered to the standard before being used.
9. A numerically controlled machine tool based on digital twinning technology, as claimed in claim 8, wherein: the step S82 further includes the steps of:
s821: discharging the cutting fluid after solid-liquid separation into a specific container, and measuring the weight of the container into which the cutting fluid is introduced;
s822: identifying the height of the cutting fluid in a specific solution through laser, and further determining the volume of the cutting fluid;
s823: the density of the cutting fluid is obtained through the volume and the weight, when the density is larger than the density of the marked cutting fluid, the cutting fluid is discharged and filtered, the steps S821-S822 are repeated, the precision of a filter screen used for filtering is higher every time circulation is carried out, and the cutting fluid is guaranteed to be filtered completely while the filter screen is prevented from being blocked.
10. A numerically controlled machine tool based on digital twinning technology, as claimed in claim 9, wherein: and an anti-skid coating is arranged on the outer side of the triangular clamping jaw.
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| CN114161217A (en) * | 2021-11-17 | 2022-03-11 | 葛汉宝 | Coolant liquid intelligence circulation recovery unit of digit control machine tool processing usefulness |
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| JP2003211341A (en) * | 2002-01-17 | 2003-07-29 | Fuji Seiki Mach Works Ltd | Coolant liquid and cutting chip dispersion preventing device in circumference in main spindle head for machine tool |
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Application publication date: 20220722 |