CN116748385A - Multi-process progressive die control system based on artificial intelligence - Google Patents
Multi-process progressive die control system based on artificial intelligence Download PDFInfo
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- 230000000750 progressive effect Effects 0.000 title claims abstract description 28
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- 238000005452 bending Methods 0.000 claims description 205
- 238000011156 evaluation Methods 0.000 claims description 57
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/08—Dies with different parts for several steps in a process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/26—Programme control arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention relates to the technical field of die control systems, in particular to an artificial intelligence-based multi-process progressive die control system.
Description
Technical Field
The invention relates to the technical field of mold control systems, in particular to a multi-process progressive mold control system based on artificial intelligence.
Background
The die is an important tool for manufacturing various products, along with the production requirement, more advanced and efficient progressive dies are paid more attention to by technicians in related fields, a plurality of progressive area stations are arranged in the die, a plurality of stamping processes are finished simultaneously by using a plurality of different stations on a pair of dies, and each time the die is stamped, the material belt moves once at fixed intervals, so that the forming processing process is divided into a plurality of stages, the requirements of complex shape and high-precision forming are met, and the progressive dies play an increasingly important role in production due to the high stability and high precision of the progressive dies.
Chinese patent publication No.: the invention provides a progressive die which comprises an upper die and a lower die and is characterized in that the upper die comprises an upper die seat, an upper base plate assembly, an upper clamping plate assembly, a stop plate assembly and a stripper plate assembly which are sequentially arranged from top to bottom, the lower die comprises a lower supporting plate, a plurality of vertical plates, a lower die seat, a lower base plate assembly and a lower clamping plate assembly which are sequentially arranged from bottom to top, a step pre-punching and outline pre-punching station, a bump forming station, a coarse punching product mounting hole station, a fine punching product mounting hole station, an arc shaping station, a plane shaping station and a stripper plate assembly, and corresponding detachable sub-assemblies are arranged at the step pre-punching and outline pre-punching station, the bump forming station, the coarse punching product mounting hole station and the fine punching product mounting hole station.
It can be seen that the following problems are present in the prior art,
1. in the prior art, in the bending process of the progressive die, holes close to folds are not considered, and offset holes are formed due to the difference of the ductility of the upper surface and the lower surface of a workpiece, so that the processing precision of the progressive die is affected;
2. in the prior art, the influence of factors such as the difference of the material sizes of the workpieces and the temperature change of the workpieces in the processing process on the ductility of the workpieces is not considered, so that errors occur in the processing of the workpieces by the progressive die.
Disclosure of Invention
Therefore, the invention provides a multi-process progressive die control system based on artificial intelligence, which is used for solving the problems that in the prior art, offset holes are generated by deformation in the bending process of holes close to folds, and the workpiece ductility is influenced by the difference of the material sizes of the workpieces and the temperature change of the workpieces in the processing process.
In order to achieve the above object, the present invention provides an artificial intelligence based multi-process progressive die control system, comprising:
the die holder comprises a lower die holder, a die guide post arranged on the lower die holder and an upper die holder connected with the die guide post, so that the die guide post supports the upper die holder to move up and down for die opening and closing actions;
the die heads comprise a plurality of upper die heads arranged on the upper die base and a plurality of lower die heads arranged on the lower die base, the upper die heads and the lower die heads are mutually matched to form a plurality of functional stations, and each functional station comprises a punching station and a bending station;
the material conveying mechanism comprises a workpiece material belt which is arranged on the lower die holder and used for driving a workpiece to move among all functional stations;
the collecting module comprises a temperature collecting unit, a first image unit, a second image unit and a workpiece information detecting unit, wherein the temperature collecting unit is arranged at the bending station and used for collecting the temperature of a workpiece, the first image unit is used for detecting the distance from a crease on the surface of the workpiece to the center of a punching circle, the second image unit is arranged at the punching station and used for collecting the punching aperture, and the workpiece information detecting unit is arranged at one side of a die holder and used for detecting the thickness and the length-width ratio of a section of the workpiece;
the intelligent analysis module is connected with the die holder, the material conveying mechanism and the data acquisition module and comprises a data analysis unit and a control unit, wherein the data analysis unit is used for judging whether the bending state evaluation of the workpiece is required or not based on the minimum distance value from the crease of the surface of the workpiece to the circle center of the punching hole, and calculating a bending state evaluation value based on data of a first data set, and judging the bending state based on the bending state evaluation value, and the first data set comprises the temperature of the workpiece, the punching hole diameter and a preset bending curvature contrast value;
the control unit is connected with the data analysis unit and is used for adjusting the operation parameters of the die holder and the material conveying mechanism based on the bending state, comprising,
determining an adjustment mode of the die closing speed of the die holder based on the magnitude of the bending state evaluation value in a first bending state;
and in a second bending state, calculating a bending state regulating value based on data of a second data set, and determining a mode of adjusting the die closing speed of the die holder and the workpiece conveying speed of the material conveying mechanism based on the bending state regulating value, wherein the second data set comprises workpiece thickness, workpiece cross-section length-width ratio and workpiece temperature.
Further, the data analysis unit judges whether the bending state evaluation of the workpiece is required or not based on the minimum value of the distance from the crease of the surface of the workpiece to the circle center of the punching hole, wherein,
comparing the minimum distance value with a preset distance threshold value,
if the minimum distance value is smaller than or equal to the distance threshold value, the data analysis unit judges that bending state evaluation of the workpiece is required;
and if the minimum distance value is larger than the distance threshold value, the data analysis unit judges that the bending state evaluation of the workpiece is not needed.
Further, the data analysis unit calculates a bending state evaluation value according to formula (1) based on the data of the first data group,
in the formula (1), E 1 For evaluating the bending state, E 1 T is the current workpiece temperature, T 0 For a preset workpiece temperature contrast value, K is a preset bending curvature contrast value, K 0 For the preset bending curvature contrast value, R is the current punching aperture, R 0 Is a preset value of the hole diameter contrast of the punching hole.
Further, the data analysis unit determines a bending state based on the bending state evaluation value, wherein,
comparing the bending state evaluation value with a preset bending state comparison value,
if the bending state evaluation value is smaller than or equal to the bending state comparison value, the data analysis unit judges that the bending state is a first bending state;
and if the bending state evaluation value is larger than the bending state comparison value, the data analysis unit judges that the bending state is a second bending state.
Further, the control unit determines a mode of adjusting the die closing speed of the die holder based on the magnitude of the bending state evaluation value, wherein,
the control unit is internally provided with a plurality of speed adjustment modes for determining the die closing speed of the die holder based on the magnitude of the bending state evaluation value in advance, and the adjustment amounts of the speed adjustment modes for the die closing speed of the die holder are different.
Further, the control unit calculates a bending state regulation value according to formula (2) based on the data of the second data set,
in the formula (2), E 2 For the bending state regulating value, H is the current thickness of the workpiece, H 0 For the preset workpiece thickness contrast value, epsilon is the aspect ratio of the current workpiece section, epsilon 0 For a preset aspect ratio of the cross section of the workpiece, T is the current workpiece temperature, T 0 Is a preset workpiece temperature contrast value.
Further, the control unit determines a mode of adjusting the die closing speed of the die holder based on the bending state regulation value, wherein,
the control unit is internally provided with a plurality of speed adjustment modes for adjusting the die closing speed of the die holder based on the magnitude of the bending state regulation value in advance, and the adjustment amounts of the speed adjustment modes on the die closing speed of the die holder are different.
Further, the control unit determines a speed adjustment mode of the workpiece conveying speed of the material conveying mechanism based on the bending state regulating value, wherein,
the control unit is internally provided with a plurality of speed adjustment modes for adjusting the workpiece conveying speed of the material conveying mechanism based on the magnitude of the bending state regulation value in advance, and the speed adjustment modes are different in adjustment quantity of the workpiece conveying speed of the material conveying mechanism.
Further, the intelligent analysis module further comprises a display terminal, wherein the display terminal is used for inputting preset data and displaying operation parameters.
Further, the preset data comprises a preset workpiece temperature contrast value, a preset bending curvature contrast value, a preset punching aperture contrast value, a preset distance threshold value, a preset bending state contrast value, a preset workpiece thickness contrast value and a preset workpiece section length-width ratio contrast value;
the operation parameters comprise the die assembly speed of the die holder and the workpiece conveying speed of the material conveying mechanism.
Compared with the prior art, the die has the beneficial effects that by arranging the die holder, the die heads, the material conveying mechanism, the acquisition module and the intelligent analysis module, the intelligent analysis module judges whether the bending state evaluation is required or not based on the minimum distance from the crease on the surface of the workpiece to the circle center of the punching, calculates the bending state evaluation value, judges the bending state based on the bending state evaluation value, determines the adjustment mode of the die closing speed of the die holder based on the bending state evaluation value in different bending states, or calculates the bending state regulation value, determines the adjustment mode of the die closing speed of the die holder and the workpiece conveying speed of the material conveying mechanism based on the bending state regulation value, and further, the die operation parameter is adjusted in a targeted manner according to the material size difference of the workpiece and the workpiece temperature change in the processing process in the bending process of the hole close to the crease, and the production precision and the production quality of the die are improved.
In the invention, the data analysis unit is arranged to judge whether the bending state of the workpiece is required to be evaluated based on the minimum distance value from the crease of the surface of the workpiece to the center of the punching circle, in the actual situation, because the upper surface and the lower surface of the workpiece are stretched and bent to different degrees in the bending process, the upper surface and the lower surface of the punched hole are offset, so that the hole is deformed into a deviated hole, the assembly of the workpiece is influenced, and the influence degree of the hole which is closer to the crease is larger.
Further, the invention calculates the bending state evaluation value based on the workpiece temperature, the punching aperture and the preset bending curvature contrast value by arranging the data analysis unit, in the actual situation, under the condition that the influence on the nearby holes needs to be considered at the crease set in the process, the change of the workpiece temperature, the aperture of the hole closest to the crease and the curvature of the bending piece needed to bend the workpiece at the moment have great influence on the ductility of the workpiece in the bending process.
Further, the bending state of the workpiece is more intuitively distinguished by comparing the bending state evaluation value with the preset bending state comparison value through the data analysis unit, in the actual situation, the influence degree of the workpiece on nearby holes in the bending process is different, and the operation parameters of the die can be more accurately adjusted according to different main influence factors under different influence degrees by further distinguishing the influence degree, so that the effectiveness of operation adjustment of the control system in the operation process of the die is improved.
Further, under the condition that the influence degree of the control unit on nearby holes in the bending process is small, the mode of adjusting the die clamping speed of the die holder is further determined according to the size of the bending state evaluation value, in the practical situation, the speed of the die clamping speed can influence the sudden change state of the ductility of the upper surface and the lower surface of a workpiece in the bending process, the quicker die clamping speed is more likely to cause deviation of the upper surface and the lower surface of the holes, and the die clamping speed is slowed down to different degrees according to the size of the bending state evaluation value, so that the quality and the precision of die processing production are improved.
Further, under the condition that the influence degree of the control unit on the nearby holes in the bending process in the bending state is larger, the bending state regulating value is further determined according to the data information of the material and the temperature of the workpiece in the current production process, in the actual condition, under the condition that the bending of the workpiece can cause larger influence on the nearby holes, the thickness of the workpiece, the length-width ratio of the section of the workpiece and the temperature of the workpiece are comprehensively considered in a more detailed manner, the thinner the thickness of the workpiece, the smaller the length-width ratio of the section of the workpiece, the higher the temperature of the workpiece, the larger the influence degree of bending of the workpiece on the nearby holes at the bending station is represented, and the influence degree of bending on the nearby holes is more intuitively reflected through formula calculation.
Furthermore, the invention determines the die clamping speed of the die holder and the adjustment mode of the workpiece conveying speed of the material conveying mechanism according to the bending state regulating value by arranging the control unit, in the practical situation, the speed of the die clamping speed can influence the ductility abrupt change state of the upper surface and the lower surface of the workpiece in the bending process, the faster the die clamping speed is, the easier the deviation of the upper surface and the lower surface of the hole occurs, the faster the workpiece conveying speed of the material conveying mechanism is, the lower the temperature cooling time of the workpiece in the conveying process of each station is, the higher the workpiece temperature is, the workpiece ductility is increased, and the holes near folds are easier to deform.
Drawings
FIG. 1 is a system block diagram of an artificial intelligence based multi-process progressive die control system in accordance with an embodiment of the present invention;
FIG. 2 is a system block diagram of an acquisition module according to an embodiment of the present invention;
FIG. 3 is a system block diagram of an intelligent analysis module according to an embodiment of the present invention;
FIG. 4 is a logic flow diagram of an intelligent analysis module according to an embodiment of the present invention;
FIG. 5 is a schematic view of a workpiece surface according to an embodiment of the invention;
in the figure, 1: crease lines.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1 to 3, fig. 1 is a system block diagram of an artificial intelligence based multi-process progressive die control system according to an embodiment of the invention, fig. 2 is a system block diagram of an acquisition module according to an embodiment of the invention, and fig. 3 is a system block diagram of an intelligent analysis module according to an embodiment of the invention, the artificial intelligence based multi-process progressive die control system according to the invention includes:
the die holder comprises a lower die holder, a die guide post arranged on the lower die holder and an upper die holder connected with the die guide post, so that the die guide post supports the upper die holder to move up and down for die opening and closing actions;
the die heads comprise a plurality of upper die heads arranged on the upper die base and a plurality of lower die heads arranged on the lower die base, the upper die heads and the lower die heads are mutually matched to form a plurality of functional stations, and each functional station comprises a punching station and a bending station;
the material conveying mechanism comprises a workpiece material belt which is arranged on the lower die holder and used for driving a workpiece to move among all functional stations;
the collecting module comprises a temperature collecting unit, a first image unit, a second image unit and a workpiece information detecting unit, wherein the temperature collecting unit is arranged at the bending station and used for collecting the temperature of a workpiece, the first image unit is used for detecting the distance from a crease 1 on the surface of the workpiece to the circle center of a punching hole, the second image unit is arranged at the punching station and used for collecting the aperture of the punching hole, and the workpiece information detecting unit is arranged at one side of a die holder and used for detecting the thickness and the length-width ratio of the section of the workpiece;
the intelligent analysis module is connected with the die holder, the material conveying mechanism and the data acquisition module and comprises a data analysis unit and a control unit, wherein the data analysis unit is used for judging whether the bending state evaluation of the workpiece is required or not based on the minimum distance value from the crease 1 on the surface of the workpiece to the circle center of the punching, and is used for calculating a bending state evaluation value based on data of a first data set, judging the bending state based on the bending state evaluation value, and the first data set comprises the temperature of the workpiece, the punching aperture and a preset bending curvature contrast value;
the control unit is connected with the data analysis unit and is used for adjusting the operation parameters of the die holder and the material conveying mechanism based on the bending state, comprising,
determining an adjustment mode of the die closing speed of the die holder based on the magnitude of the bending state evaluation value in a first bending state;
and in a second bending state, calculating a bending state regulating value based on data of a second data set, and determining a mode of adjusting the die closing speed of the die holder and the workpiece conveying speed of the material conveying mechanism based on the bending state regulating value, wherein the second data set comprises workpiece thickness, workpiece cross-section length-width ratio and workpiece temperature.
Specifically, the specific structure of the workpiece material belt is not limited, and the workpiece material belt can be fastened and conveyed to move at different stations only by the aid of the workpiece material belt, and the technology is widely used in existing progressive dies and is not repeated herein.
Specifically, the specific structure of the temperature acquisition unit is not limited, and only the workpiece temperature can be acquired, which is the prior art and is not described herein.
Specifically, the specific structures of the first image unit, the second image unit and the workpiece information detection unit are not limited, and the first image unit, the second image unit and the workpiece information detection unit can be a high-definition visual camera device or a precision detection device with a distance measurement function, and the technology is widely used in the field of industrial production and is not repeated here.
Specifically, referring to fig. 4, a logic flow diagram of an intelligent analysis module according to an embodiment of the present invention is shown, the specific structure of the intelligent analysis module and each functional unit therein is not limited, and the intelligent analysis module may be a micro control computer capable of implementing information data receiving, processing and transmitting, or may be a CPU unit integrating related functional algorithms, which is not described herein in detail.
Specifically, the data analysis unit judges whether the bending state evaluation of the workpiece is required or not based on the minimum value of the distance from the crease 1 on the surface of the workpiece to the center of the punching circle, wherein,
the distance minimum value L and a preset distance threshold value L are combined 0 In the comparison of the two types of materials,
if the distance minimum L is less than or equal to the distance threshold L 0 The data analysis unit judges that bending state evaluation of the workpiece is required;
if the distance minimum L is greater than the distance threshold L 0 The data analysis unit judges that bending state evaluation of the workpiece is not needed;
in this embodiment, to characterize the impact of bending on punching, a distance threshold L is preset 0 In the distance interval [10,15]The unit of the distance interval is centimeter.
Specifically, the data analysis unit is arranged to judge whether the bending state of the workpiece is required to be evaluated based on the minimum distance value from the crease 1 on the surface of the workpiece to the punching center, in the actual situation, because the upper surface and the lower surface of the workpiece are stretched and bent to different degrees in the bending process, the upper surface and the lower surface of the punched hole are offset, the hole is deformed into a biased hole, the assembly of the workpiece is influenced, and the influence degree of the hole which is closer to the crease 1 is larger.
Specifically, the data analysis unit calculates a bending state evaluation value according to formula (1) based on the data of the first data group,
in the formula (1), E 1 For evaluating the bending state, E 1 T is the current workpiece temperature, T 0 For a preset workpiece temperature contrast value, K is a preset bending curvature contrast value, K 0 For the preset bending curvature contrast value, R is the current punching aperture, R 0 A preset punching aperture contrast value;
wherein, in the present embodiment, the workpiece temperature contrast value T is preset 0 In the temperature interval [200, 300 ]]Internal setting, bending curvature contrast value K 0 In the curvature section [10,15 ]]Internal setting, punching aperture contrast value R 0 In interval [1,5 ]]The internal setting is that the interval unit is cm.
Specifically, the invention calculates the bending state evaluation value based on the workpiece temperature, the punching aperture and the preset bending curvature contrast value by arranging the data analysis unit, in the actual situation, under the condition that the influence on the nearby holes needs to be considered at the position of the crease 1 set in the process, the change of the workpiece temperature, the aperture of the hole nearest to the crease 1 and the curvature of the bending piece needed to bend the workpiece at the position have great influence on the ductility of the workpiece in the bending process.
Specifically, the data analysis unit determines a bending state based on the bending state evaluation value, wherein,
the bending state evaluation value E 1 Comparison value E with preset bending state 1 The comparison is carried out in the sense that,
if the bending state evaluation value E 1 Is smaller than or equal to the bending state contrast value E 1 ' the data analysis unit determines theThe bending state is a first bending state;
if the bending state evaluation value E 1 Is larger than the bending state contrast value E 1 ' the data analysis unit determines that the bending state is a second bending state;
wherein, the bending state contrast value E can be preset 1 ' in section [8, 10 ]]And (5) internal setting.
Specifically, the bending state of the workpiece is more intuitively distinguished by comparing the bending state evaluation value with the preset bending state comparison value through the data analysis unit, in the actual situation, the influence degree of the workpiece on nearby holes in the bending process is different, and the operation parameters of the die are more accurately adjusted according to different main influence factors under different influence degrees by further distinguishing the influence degree, so that the effectiveness of operation adjustment of the control system in the operation process of the die is improved.
Specifically, the control unit determines a mode of adjusting the die closing speed of the die holder based on the magnitude of the bending state evaluation value, wherein,
a plurality of speed adjustment modes for determining the die closing speed of the die holder based on the magnitude of the bending state evaluation value are preset in the control unit, and the adjustment amounts of the speed adjustment modes for the die closing speed of the die holder are different;
ea is determined based on the bending state evaluation value E0 calculated under the conditions of t=t0, r=r0, k=k0, and in this embodiment, ea=e0×1.35 is set, V0 represents the initial die closing speed of the die holder, Δv1 denotes a first speed adjustment amount, Δv2 denotes a second speed adjustment amount, and 0.1V0 < ++.v1 < ++.v2 < 0.3V0 in this embodiment in order to make adjustment effective and avoid excessive adjustment amount.
Specifically, under the condition that the influence degree of the control unit on nearby holes in the bending process is small, the mode of adjusting the die clamping speed of the die holder is further determined according to the size of the bending state evaluation value, in practical cases, the speed of the die clamping speed can influence the ductility abrupt change state of the upper surface and the lower surface of a workpiece in the bending process, the quicker die clamping speed is more likely to cause deviation of the upper surface and the lower surface of the holes, and the die clamping speed is slowed down to different degrees according to the size of the bending state evaluation value, so that the quality and the accuracy of die processing production are improved.
Specifically, the control unit calculates a bending state regulation value according to formula (2) based on the data of the second data set,
in the formula (2), E 2 For the bending state regulating value, H is the current thickness of the workpiece, H 0 For the preset workpiece thickness contrast value, epsilon is the aspect ratio of the current workpiece section, epsilon 0 For a preset aspect ratio of the cross section of the workpiece, T is the current workpiece temperature, T 0 Is a preset workpiece temperature contrast value;
wherein the workpiece thickness contrast value H can be preset 0 In interval [15,25 ]]Setting the inside, wherein the interval unit is mm, and the aspect ratio contrast value epsilon of the cross section of the workpiece 0 In interval [5,8 ]]Internal setting, workpiece temperature contrast value T 0 In interval [300,500 ]]The internal setting is that the interval unit is the temperature.
Specifically, under the condition that the influence degree of the control unit on the nearby holes in the bending process in the bending state is larger, the bending state regulating value is further determined according to the data information of the material and the temperature of the workpiece in the current production process, in the actual condition, under the condition that the bending of the workpiece can greatly influence the nearby holes, the thickness of the workpiece, the length-width ratio of the section of the workpiece and the temperature of the workpiece are comprehensively considered in a more detailed manner, the thinner the thickness of the workpiece, the smaller the length-width ratio of the section of the workpiece, the higher the temperature of the workpiece, the larger the influence degree of bending of the workpiece on the nearby holes at the bending station is represented, and the influence degree of bending on the nearby holes is more intuitively reflected through formula calculation.
Specifically, the control unit determines a mode of adjusting the die clamping speed of the die holder based on the bending state regulation value, wherein,
the control unit is internally provided with a plurality of speed adjustment modes for adjusting the die closing speed of the die holder based on the magnitude of the bending state regulation value in advance, and the adjustment amounts of the speed adjustment modes on the die closing speed of the die holder are different.
Specifically, in this embodiment, at least two ways of determining the adjustment of the mold clamping speed based on the bending state adjustment value E are set, wherein the control unit adjusts the bending state adjustment value E 2 Comparing the bending state with a preset bending state regulation reference value Eb,
if E 2 If Eb is less than or equal to Eb, the control unit adopts a first adjustment mode based on a bending state adjusting value, wherein the first adjustment mode based on the bending state adjusting value is to adjust the die closing speed of the die holder to a third speed value V3, and V3 = V0-Deltav 3 is set;
if E 2 More than Eb, the control unit adopts a second adjusting mode based on a bending state adjusting value, wherein the second adjusting mode based on the bending state adjusting value is to adjust the die closing speed of the die holder to a fourth speed value V4, and V4 = V0-Deltav 4 is set;
wherein V0 represents the initial die closing speed of the die holder, deltav 3 represents the third speed adjustment amount, deltav 4 represents the fourth speed adjustment amount, in this embodiment, in order to make the bending state evaluation reference value Eb embody the representation of the influence degree of the holes near the fold mark 1 in the bending process, 15 < Eb < 20, and likewise, 0.25V0 < ++.v3 < +.v4 < 0.5v0 in this embodiment, in order to make the adjustment effective and avoid the adjustment amount being too large.
Specifically, the control unit determines a speed adjustment mode of the workpiece conveying speed of the material conveying mechanism based on the bending state regulating value, wherein,
the control unit is internally provided with a plurality of speed adjustment modes for adjusting the workpiece conveying speed of the material conveying mechanism based on the magnitude of the bending state regulation value in advance, and the speed adjustment modes are different in adjustment quantity of the workpiece conveying speed of the material conveying mechanism.
Specifically, in this embodiment, at least two adjustment modes for determining the workpiece conveying speed of the material conveying mechanism based on the bending state adjusting and controlling value are set, wherein the control unit adjusts the bending state adjusting and controlling value E 2 Comparing the bending state with a preset bending state regulation reference value Eb,
if E 2 If Eb is less than or equal to the Eb, the control unit adopts a first conveying speed adjusting mode based on a bending state regulating value, wherein the first conveying speed adjusting mode is to adjust the workpiece conveying speed of the material conveying mechanism to a first conveying speed value V5, and V5 = Va-Deltav 5 is set;
if E 2 More than Eb, the control unit adopts a second conveying speed adjusting mode based on the bending state regulating and controlling value, wherein the second conveying speed adjusting mode is to adjust the workpiece conveying speed of the material conveying mechanism to a second conveying speed value V6, and V6 = Va-Deltav 6 is set;
where Va denotes an initial workpiece conveying speed of the feed mechanism, Δv5 denotes a first conveying speed adjustment amount, Δv4 denotes a second conveying speed adjustment amount, and in this embodiment, in order to enable the bending state evaluation reference value Eb to embody the characterization of the influence degree of the holes near the folio trace 1 in the bending process, eb is smaller than 15 and smaller than 20, also, in order to make the adjustment effective and avoid the adjustment amount from being excessively large, 0.3Va < +v5 < ++v6 < 0.5Va in the present embodiment.
Specifically, the control unit is arranged to determine the die clamping speed of the die holder and the adjustment mode of the workpiece conveying speed of the material conveying mechanism according to the bending state regulating value, in practical situations, the die clamping speed can influence the ductility abrupt change state of the upper surface and the lower surface of a workpiece in the bending process, the faster the die clamping speed is, the deviation of the upper surface and the lower surface of a hole is easy to occur, the faster the workpiece conveying speed of the material conveying mechanism is, the lower the temperature cooling time of the workpiece in the conveying process of each station is, the workpiece temperature is higher, the ductility of the workpiece is increased, and the holes near the crease 1 are easier to deform.
Specifically, the intelligent analysis module further comprises a display terminal, wherein the display terminal is used for inputting preset data and displaying operation parameters.
Specifically, the preset data comprises a preset workpiece temperature contrast value, a preset bending curvature contrast value, a preset punching aperture contrast value, a preset distance threshold value, a preset bending state contrast value, a preset workpiece thickness contrast value and a preset workpiece section length-to-width ratio contrast value;
the operation parameters comprise the die assembly speed of the die holder and the workpiece conveying speed of the material conveying mechanism.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An artificial intelligence based multi-process progressive die control system, comprising:
the die holder comprises a lower die holder, a die guide post arranged on the lower die holder and an upper die holder connected with the die guide post, so that the die guide post supports the upper die holder to move up and down for die opening and closing actions;
the die heads comprise a plurality of upper die heads arranged on the upper die base and a plurality of lower die heads arranged on the lower die base, the upper die heads and the lower die heads are mutually matched to form a plurality of functional stations, and each functional station comprises a punching station and a bending station;
the material conveying mechanism comprises a workpiece material belt which is arranged on the lower die holder and used for driving a workpiece to move among all functional stations;
the collecting module comprises a temperature collecting unit, a first image unit, a second image unit and a workpiece information detecting unit, wherein the temperature collecting unit is arranged at the bending station and used for collecting the temperature of a workpiece, the first image unit is used for detecting the distance from a crease on the surface of the workpiece to the center of a punching circle, the second image unit is arranged at the punching station and used for collecting the punching aperture, and the workpiece information detecting unit is arranged at one side of a die holder and used for detecting the thickness and the length-width ratio of a section of the workpiece;
the intelligent analysis module is connected with the die holder, the material conveying mechanism and the data acquisition module and comprises a data analysis unit and a control unit, wherein the data analysis unit is used for judging whether the bending state evaluation of the workpiece is required or not based on the minimum distance value from the crease of the surface of the workpiece to the circle center of the punching hole, and calculating a bending state evaluation value based on data of a first data set, and judging the bending state based on the bending state evaluation value, and the first data set comprises the temperature of the workpiece, the punching hole diameter and a preset bending curvature contrast value;
the control unit is connected with the data analysis unit and is used for adjusting the operation parameters of the die holder and the material conveying mechanism based on the bending state, comprising,
determining an adjustment mode of the die closing speed of the die holder based on the magnitude of the bending state evaluation value in a first bending state;
and in a second bending state, calculating a bending state regulating value based on data of a second data set, and determining a mode of adjusting the die closing speed of the die holder and the workpiece conveying speed of the material conveying mechanism based on the bending state regulating value, wherein the second data set comprises workpiece thickness, workpiece cross-section length-width ratio and workpiece temperature.
2. The artificial intelligence based multi-stage progressive die control system according to claim 1, wherein the data analysis unit determines whether bending state evaluation of the workpiece is required based on a minimum distance from a crease of the surface of the workpiece to a center of a punching hole, wherein,
comparing the minimum distance value with a preset distance threshold value,
if the minimum distance value is smaller than or equal to the distance threshold value, the data analysis unit judges that bending state evaluation of the workpiece is required;
and if the minimum distance value is larger than the distance threshold value, the data analysis unit judges that the bending state evaluation of the workpiece is not needed.
3. The artificial intelligence based multi-process progressive die control system according to claim 2, wherein the data analysis unit calculates a bending state evaluation value according to formula (1) based on the data of the first data group,
in the formula (1), E 1 For evaluating the bending state, E 1 T is the current workpiece temperature, T 0 For a preset workpiece temperature contrast value, K is a preset bending curvature contrast value, K 0 For the preset bending curvature contrast value, R is the current punching aperture, R 0 Is a preset value of the hole diameter contrast of the punching hole.
4. The artificial intelligence based multi-process progressive die control system according to claim 3, wherein the data analysis unit determines a bending state based on the bending state evaluation value, wherein,
comparing the bending state evaluation value with a preset bending state comparison value,
if the bending state evaluation value is smaller than or equal to the bending state comparison value, the data analysis unit judges that the bending state is a first bending state;
and if the bending state evaluation value is larger than the bending state comparison value, the data analysis unit judges that the bending state is a second bending state.
5. The artificial intelligence based multi-step progressive die control system of claim 4, wherein the control unit determines a mode of adjusting a closing speed of the die holder based on a magnitude of the bending state evaluation value, wherein,
the control unit is internally provided with a plurality of speed adjustment modes for determining the die closing speed of the die holder based on the magnitude of the bending state evaluation value in advance, and the adjustment amounts of the speed adjustment modes for the die closing speed of the die holder are different.
6. The artificial intelligence based multi-stage progressive die control system according to claim 4, wherein the control unit calculates a bending state control value according to formula (2) based on the data of the second data set,
in the formula (2), E 2 For the bending state regulating value, H is the current thickness of the workpiece, H 0 For the preset workpiece thickness contrast value, epsilon is the aspect ratio of the current workpiece section, epsilon 0 For a preset aspect ratio of the cross section of the workpiece, T is the current workpiece temperature, T 0 Is a preset workpiece temperature contrast value.
7. The artificial intelligence based multi-stage progressive die control system of claim 6, wherein the control unit determines a mode of adjustment of a closing speed of the die holder based on the bending state adjustment value, wherein,
the control unit is internally provided with a plurality of speed adjustment modes for adjusting the die closing speed of the die holder based on the magnitude of the bending state regulation value in advance, and the adjustment amounts of the speed adjustment modes on the die closing speed of the die holder are different.
8. The artificial intelligence based multi-stage progressive die control system of claim 6, wherein the control unit determines a speed adjustment mode for a workpiece conveying speed of the feed mechanism based on the bending state regulation value, wherein,
the control unit is internally provided with a plurality of speed adjustment modes for adjusting the workpiece conveying speed of the material conveying mechanism based on the magnitude of the bending state regulation value in advance, and the speed adjustment modes are different in adjustment quantity of the workpiece conveying speed of the material conveying mechanism.
9. The multiple process progressive die control system based on artificial intelligence of claim 1, wherein the intelligent analysis module further comprises a display terminal for inputting preset data and displaying operating parameters.
10. The artificial intelligence based multi-process progressive die control system of claim 9, wherein the preset data includes a preset workpiece temperature contrast value, a preset bending curvature contrast value, a preset punch aperture contrast value, a preset distance threshold value, a preset bending state contrast value, a preset workpiece thickness contrast value, and a preset workpiece cross-section aspect ratio contrast value;
the operation parameters comprise the die assembly speed of the die holder and the workpiece conveying speed of the material conveying mechanism.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001353526A (en) * | 2000-06-09 | 2001-12-25 | Amada Co Ltd | Automatic die selection apparatus in bending apparatus |
| CN109159392A (en) * | 2018-09-27 | 2019-01-08 | 科控工业自动化设备（上海）有限公司 | A kind of method and control system of moulding mold processing parameters Automatic Optimal |
| CN115255048A (en) * | 2022-09-27 | 2022-11-01 | 南通创为机械科技有限公司 | Intelligent control method and system for bending machine |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001353526A (en) * | 2000-06-09 | 2001-12-25 | Amada Co Ltd | Automatic die selection apparatus in bending apparatus |
| CN109159392A (en) * | 2018-09-27 | 2019-01-08 | 科控工业自动化设备（上海）有限公司 | A kind of method and control system of moulding mold processing parameters Automatic Optimal |
| CN115255048A (en) * | 2022-09-27 | 2022-11-01 | 南通创为机械科技有限公司 | Intelligent control method and system for bending machine |
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