CN111545612A - Current-assisted large-area array microstructure asynchronous roll forming equipment - Google Patents
Current-assisted large-area array microstructure asynchronous roll forming equipment Download PDFInfo
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- CN111545612A CN111545612A CN202010267091.0A CN202010267091A CN111545612A CN 111545612 A CN111545612 A CN 111545612A CN 202010267091 A CN202010267091 A CN 202010267091A CN 111545612 A CN111545612 A CN 111545612A
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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
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/04—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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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
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
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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
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
- B21D3/05—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers arranged on axes rectangular to the path of the work
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Abstract
The invention provides a current-assisted large-area array microstructure asynchronous roll forming device which comprises a rack platform, a roll mechanism, an adjusting mechanism, a driving device and a power-up device. The driving device is installed on the rack platform assembly, the roller mechanism is fixedly installed on the rack platform assembly, the adjusting mechanism is connected with the roller mechanism, the roller mechanism is connected with the power-on device, and the sensing device is installed on the roller mechanism. The invention realizes the integration of current-assisted forming and rolling process, is suitable for asynchronous rolling forming of current-assisted large-area array microstructure, can realize asynchronous control of the rotating speed of the upper and lower rollers and accurate adjustment of the position, integrates the functions of roller pressure/current/temperature real-time detection and the like, and solves the defects of low dimensional precision, low processing efficiency, filling consistency of the microstructure, poor surface finish quality and the like of the microstructure, thereby realizing the integrated manufacturing of the accuracy, the high efficiency and the forming performance of the array microstructure.
Description
Technical Field
The invention belongs to the technical field of rolling, and relates to a microstructure array surface asynchronous rolling forming device, in particular to a current-assisted large-area array microstructure asynchronous rolling forming device.
Background
The large-area array microstructure plays an important role in the fields of aviation, aerospace, electronics, medical treatment, agriculture and the like. At present, the array microstructure is mainly processed by methods such as chemical etching, milling, laser additive manufacturing and mechanical imprinting, and the methods have the problems of low manufacturing efficiency, difficulty in ensuring micro-feature size, difficulty in realizing large-area array manufacturing, high cost and the like. The array microstructure manufactured by mechanical imprinting mainly by a traditional cold press forming method has poor filling consistency and surface smoothness, large residual stress of a component and uneven microstructure distribution due to the problems of high yield strength of a metal material at normal temperature, increased friction resistance under micro-mesoscopic scale, aggravated die abrasion and the like. Although the problems of cold embossing can be avoided by heating, the heating means and the holding device increase the energy consumption and the process complexity.
In addition, the roll forming equipment mainly adopts cold press forming and mainly aims at manufacturing low-strength material array structures such as aluminum alloy, copper alloy and the like, and the manufactured array microstructures have the problems of poor filling consistency and surface smoothness, large residual stress of components, uneven microstructure distribution and the like when the high-strength alloy array microstructures are formed. Therefore, it is desirable to develop a special apparatus to solve the manufacturing problem of the high-strength alloy array microstructure.
The excitation action of the pulse current can change the microcosmic physical essence and the macroscopic deformation characteristic of the material, reduce the deformation resistance of the material, improve the atom activity in the material, improve the processing performance and the plastic deformation capability of the material, and has the advantages of high efficiency, low cost, simple process, good performance of a formed member, high precision, good filling consistency and the like, thereby being a green manufacturing method.
Disclosure of Invention
Therefore, the invention provides the current-assisted large-area array microstructure asynchronous roll forming equipment for realizing the integration of the current-assisted forming and the roll forming process. The device can realize asynchronous control of the rotating speed of the upper roller and the lower roller, accurate adjustment of the position, integration of functions of real-time detection of the pressure/current/temperature of the roller and the like, and overcomes the defects of low dimensional precision, low processing efficiency, poor filling consistency and surface smoothness of the microstructure and the like of the microstructure, thereby realizing the accurate, efficient and forming integrated manufacturing of the array microstructure.
The invention provides a current-assisted large-area array microstructure asynchronous roll forming device which comprises a rack platform, a roll mechanism, an adjusting mechanism, a driving device and a power-up device, wherein the rack platform is provided with a plurality of parallel tracks;
the rolling mechanism comprises a driving roller, a driven roller, a driving shaft, a driven shaft and a supporting assembly, wherein an array microstructure is arranged on the surface of the driving roller and is fixedly arranged on the driving shaft, and the driving shaft is horizontally arranged above the rack platform through the supporting assembly; the driven roller is fixedly arranged on the driven shaft, and the driven shaft is horizontally arranged above the rack platform through the supporting assembly; the driving roller and the driven roller are arranged in parallel, and an adjustable gap is formed between the driving roller and the driven roller;
the adjusting mechanism is connected with the driving shaft so as to adjust the size of a gap between the driving roller and the driven roller;
the driving device comprises a driving roller driving component for driving the driving shaft to drive the driving roller to rotate and a driven roller driving component for driving the driven shaft to drive the driven roller to rotate, and the rotating directions of the driving shaft and the driven shaft are opposite;
the power-up component comprises a pulse power supply, a positive power-up component and a negative power-up component, one end of the positive power-up component is connected with the driving shaft, and the other end of the positive power-up component is connected with the pulse power supply; one end of the negative electrode power-on assembly is connected with the driven shaft, and the other end of the negative electrode power-on assembly is connected with the pulse power supply.
In some embodiments, the adjusting mechanism may include a worm wheel, a worm, an eccentric wheel, and a driving motor, an output end of the driving motor is connected to the worm, the worm is engaged with the worm wheel, the worm wheel is fixedly connected to an outer edge of the eccentric wheel, a central flange of the eccentric wheel is rotatably connected to the supporting assembly, a through arc-shaped guide slot is provided on the supporting assembly, the driving shaft extends through the arc-shaped guide slot to be connected to an eccentric hole of the eccentric wheel, and the driving shaft is rotatably connected to a slot surface of the arc-shaped guide slot and can move along the arc-shaped guide slot; the worm wheel drives the eccentric wheel to rotate around a central flange in a plane perpendicular to the driving roller, and the arc-shaped guide groove, the worm wheel and the eccentric wheel are concentric.
In some embodiments, the driving roller driving mechanism may include a first motor, a first gear, a second gear and a first transmission shaft, the first motor is fixedly mounted on the frame platform, the output end of the first motor is connected with the first gear through the first transmission shaft, the second gear is connected with the driving shaft and is meshed with the first gear, the meshing depth and angle of the first gear (16) and the second gear (17) are equal to the adjustable range of the gap between the driving roller and the driven roller;
driven roller actuating mechanism can include second motor, third gear, fourth gear and second transmission shaft, second motor fixed mounting in on the frame platform, the second motor output pass through the second transmission shaft with the third gear connection, the fourth gear with the driven shaft is connected and with the third gear engagement.
In some embodiments, the positive electrode powered component comprises a positive electrode powered mold and a positive electrode cable, one end of the positive electrode powered mold is connected with the driving shaft, one end of the positive electrode cable is connected with the pulse power supply, and the other end of the positive electrode cable is connected with the other end of the positive electrode powered mold; the negative pole adds electrical component includes negative pole and adds electrical mould and negative pole cable, the negative pole adds electrical mould's one end and is connected with the driven shaft, the pulse power supply is connected to the one end of negative pole cable, the other end with the negative pole adds electrical mould's the other end and is connected.
In some embodiments, the sensing device may include an encoder, two displacement sensors, a force sensor, a temperature sensor and a self-control table, the encoder is disposed at a side of the eccentric wheel and is used for detecting a deflection angle of the eccentric wheel so as to control the rotation of the eccentric wheel according to the detected deflection angle; the two displacement sensors are respectively arranged on the driving shaft and the driven shaft and used for checking the moving distance of the driving roller and the driven roller with mutual contact as a starting point so as to obtain the thickness of the rolled object; the force sensor and the temperature sensor are disposed on the driven roller to measure roller pressure and temperature; and the data collected by the temperature sensor is displayed on a display screen of the console through the encoder, the two displacement sensors and the force sensor.
In some embodiments, the rack platform may include a rack and a platform fixedly mounted on the rack, the rack includes three small rack modules with the same structure, and the platform is directly cut from a steel plate.
In some embodiments, the supporting assembly comprises a first fixing plate, a second fixing plate and a third fixing plate which are vertically mounted on the rack platform in a plate-to-plate manner, the two ends of the driving shaft are respectively and rotatably connected with and extend through the first fixing plate and the second fixing plate, and the two ends of the driven shaft are respectively and rotatably connected with and extend through the first fixing plate and the third fixing plate;
the first fixing plate and the second fixing plate are provided with three supporting columns at the upper ends, and two ends of each supporting column are fixedly connected with the first fixing plate and the second fixing plate respectively.
In some embodiments, the first fixing plate, the second fixing plate, and the third fixing plate may be made of an insulating high temperature resistant bakelite plate.
In some embodiments, the driving shaft and the driven shaft are respectively and rotatably connected with the supporting component through bearings, the driving shaft and the driven shaft are respectively connected with inner rings of the bearings, and outer rings of the bearings are connected with the supporting component.
In some embodiments, the current applied by the power-up assembly is connected from the driving shaft (6) and led out from the driven shaft (7), an insulating sealing element can be arranged between the driving shaft (6) and the inner ring of the bearing (5), and an insulating sealing element can be arranged between the driven shaft (7) and the inner ring of the bearing (5) so as to avoid the current from being led into the rack platform.
The invention has the beneficial effects that:
1) the invention introduces a current field into the asynchronous roll forming process of the array microstructure, utilizes the electro-plasticity and thermal effect mechanism to reduce the deformation resistance of the material and improve the microstructure performance, and is suitable for the high-efficiency, precise and shape integrated manufacture of the large-area array microstructure of the alloy difficult to deform.
2) The invention adopts a horizontal design, can realize asynchronous control of the rotating speed of the upper roller and the lower roller and accurate adjustment of the pressing position, and has the characteristics of integrating roll forming and straightening;
3) the driving roller can be replaced, different sizes of microstructures can be processed, the operation is simple, and the manufacturing requirements of the microstructures with different sizes are met;
4) the invention can monitor the changes of the roller pressure, the deformation temperature and the excitation current in real time, dynamically adjust the process parameters according to the state of a forming part and realize the accurate manufacture of large-area array microstructures.
Drawings
Fig. 1 is a schematic overall structure diagram of a current-assisted large-area array microstructure asynchronous roll forming device according to an embodiment of the present invention;
FIG. 2 is a schematic view of a rack platform assembly according to an embodiment of the present invention;
FIG. 3 is a schematic view of a roller mechanism according to an embodiment of the present invention;
FIG. 4 is a schematic view of an adjustment mechanism according to an embodiment of the present invention;
FIG. 5 is a schematic view of a driving device according to an embodiment of the present invention;
FIG. 6 is a diagram of a power-up device according to an embodiment of the present invention.
In the drawings:
1-a frame; 2-a platform; 3-a driving roll; 4-a driven roller; 5-a bearing; 6-driving shaft; 7-a driven shaft; 8-a support assembly; 8-1-a first fixation plate; 8-2-a second fixation plate; 8-3-a third fixing plate; 9-angle frame; 10-a worm gear; 11-a worm; 12-an eccentric wheel; 13-a drive motor; 14-a bearing seat; 15-a first electric machine; 16-a first gear; 17-a second gear; 18-a motor base; 18' -a second motor mount; 19-a first drive shaft; 19' -a second drive shaft; 20-a second motor; 21-a third gear; 22-fourth gear; 23-a pulsed power supply; 24-positive powered die; 25-positive cable; 26-negative pole power-up mould; 27-a negative cable; 28-automatic control desk.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
As shown in fig. 1, the current-assisted large-area array microstructure asynchronous roll forming apparatus of the present invention includes a frame platform assembly, a roll mechanism, an adjusting mechanism, a driving device, a power-up device and a sensing device. The driving device is installed on the rack platform assembly, the roller mechanism is fixedly installed on the rack platform assembly, the adjusting mechanism is connected with the roller mechanism, the roller mechanism is connected with the power-on device, and the sensing device is installed on the roller mechanism.
As shown in fig. 2, the rack platform assembly comprises a rack 1 and a platform 2 fixedly mounted on the rack 1, wherein, for convenient disassembly, the rack 1 comprises three small rack modules with the same structure welded by sectional materials, the platform 2 is directly cut by a steel plate, and the rack 1 and the platform 2 are connected through bolts.
As shown in fig. 1 and 3, the rolling mechanism includes a driving roll 3, a driven roll 4, a bearing 5, a driving shaft 6, a driven shaft 7, a first fixing plate 8-1, a second fixing plate 8-2, a third fixing plate 8-3 and an angle bracket 9, wherein the three fixing plates are vertically mounted on the platform 2 in a plate-to-plate manner through the angle bracket 9, and the first fixing plate 8-1 and the second fixing plate 8-2 are provided with a through arc-shaped guide groove on the plane thereof to cooperate with an adjusting mechanism to adjust the gap between the driving roll 3 and the driven roll 4, which will be described in detail later. As shown in the figure, the surface of the driving roller 3 is provided with a required array microstructure and is connected to a driving shaft 6 through interference fit, two ends of the driving shaft 6 are respectively connected with a first fixing plate 8-1 and a second fixing plate 8-2 through bearings 5, an inner ring of each bearing 5 is connected with the driving shaft 6 through interference fit, and an outer ring of each bearing 5 is fixed to the first fixing plate 8-1 and the second fixing plate 8-2 through clearance fit. The driven roller 4 is connected to the driven shaft 7 in an interference fit mode, two ends of the driven shaft 7 are respectively connected with the first fixing plate 8-1 and the third fixing plate 8-3 through the bearings 5, inner rings of the bearings 5 are connected with the driven shaft 7 in an interference fit mode, and outer rings of the bearings 5 are fixed to the first fixing plate 8-1 and the third fixing plate 8-3 in a clearance fit mode. The driving roller 3 and the driven roller 4 are arranged above the platform 2 in a horizontal mode and are arranged in parallel, an adjustable gap is formed between the driving roller 3 and the driven roller 4, and rolled objects in the gap between the driving roller 3 and the driven roller 4 are rolled.
It will be appreciated that the drive shaft 6 and the driven shaft 7 may be connected to the same two fixed plates simultaneously, or they may be connected to different two fixed plates, respectively, if desired.
In particular, an insulating sealing element is arranged between the driving shaft 6 and the inner ring of the bearing 5, and an insulating sealing element is arranged between the driven shaft 7 and the inner ring of the bearing 5, so that the current applied by the power-on assembly only passes through the driving shaft 6, the driving roller 3, the driven shaft 7 and the driven roller 4, the parts such as a gear, a motor, the frame 1 and the platform 2 are not affected, and the safety problem is prevented.
Preferably, the upper ends of the first and second fixing plates 8-1 and 8-2 may be reinforced by three support columns and are convenient to install. Preferably, the first fixing plate 8-1, the second fixing plate 8-2 and the third fixing plate 8-3 are all made of insulating high-temperature bakelite plates so as to be suitable for roll forming of different current densities.
The adjusting mechanism is used for adjusting the gap between the driving roller 3 and the driven roller 4, so that the invention can be suitable for processing and manufacturing micro-grooves with different depths and plates with different thicknesses. In order to ensure the parallel movement of the driving roller 3, two adjusting mechanisms are respectively arranged on two sides of the driving shaft 6, the adjusting mechanisms on the two sides are the same, and for avoiding repeated description, only one side is described below. As shown in fig. 1 (only one side adjusting mechanism is shown), the adjusting mechanism includes a worm wheel 10, a worm 11, an eccentric wheel 12, a driving motor 13 and a bearing seat 14, wherein a central flange of the eccentric wheel 12 is fixed with a transmission shaft of the driving roll driving assembly through a bearing 5 in a clearance fit manner, the driving motor 13 is fixed with a first fixing plate 8-1 through a screw, the bearing seat 14 is connected with the first fixing plate 8-1 through a screw, the worm wheel 10 is fixedly connected with the periphery of the eccentric wheel 12 in a meshing manner, the worm wheel 10 is arranged in a meshing manner with the worm 11, the worm 11 is fixed with the bearing seat 14 through a bearing 5 in a clearance fit manner, the driving motor 13 is connected with the worm 11 through a shaft hole in a clearance fit manner, and the driving shaft 6 passes through an arc-shaped guide groove on. In the gap adjusting process, the driving motor 13 drives the worm 11 to rotate along a direction parallel to the platform 2 and perpendicular to the driving shaft 6 so as to drive the worm wheel 10 to rotate in a plane perpendicular to the driving roller 3 and the driving shaft 6, the worm wheel 10 drives the eccentric wheel 12 to rotate around a rotation center (namely, a central flange of the eccentric wheel 12) in the plane, and further drives the driving shaft 6 to slide along the arc-shaped guide groove so as to adjust the relative distance between the driving shaft 6 and the driven shaft 7, thereby adjusting the gap between the driving roller 3 and the driven roller 4.
In particular, the arc-shaped guide groove, the turbine 10 and the eccentric 12 are concentric.
In addition, the invention adopts a driving roller driving component to drive a driving shaft 6 to drive a driving roller 3 to rotate and adopts a driven roller driving component to drive a driven shaft 7 to drive a driven roller 4 to rotate, so that the two rollers can be driven by two servo motors independently, thereby realizing asynchronous rolling and integrating forming and straightening. As shown in fig. 5, the drive roll driving assembly includes a first motor 15, a first gear 16, a second gear 17, a first motor base 18, and a first transmission shaft 19. Wherein, first motor cabinet 18 passes through the fix with screw with platform 2, first motor 15 passes through shaft hole clearance fit location and fix with screw with first motor cabinet 18, first transmission shaft 19 passes through bolted connection with first motor cabinet 18, first transmission shaft 19 passes through bearing 5 with first fixed plate 8 and is connected, first gear 16 is connected with 19 clearance fit of first transmission shaft, first gear 16 sets up with the meshing of second gear 17, driving shaft 6 is connected just the centre with the cooperation of second gear 17 and is provided with the sealing member, make second gear 17 can move along the arc guide way on the fixed plate along driving shaft 6. In particular, the depth and angle of engagement of the first gear 16 and the second gear 17 are equal to the size of the adjustable range of the gap between the drive roller 3 and the driven roller 4. In the driving process, the first gear 16 takes the first transmission shaft 19 as a rotating shaft, the first motor 15 drives the first gear 16 to rotate, the first gear 16 drives the second gear 17 to rotate, and thus the second gear 17 drives the driving shaft 6 to rotate.
Driven roller drive assembly includes second motor 20, third gear 21, fourth gear 22, second motor cabinet 18 ' and second transmission shaft 19 ', likewise, second motor cabinet 18 ' passes through the fix with screw with platform 2, second motor 20 passes through shaft hole clearance fit location and fix with screw with second motor cabinet 18 ', second transmission shaft 19 ' passes through bolted connection with second motor cabinet 18 ', third gear 21 is connected with second transmission shaft 19 ' clearance fit, third gear 21 sets up with fourth gear 22 meshing, driven shaft 7 is connected with fourth gear 22 cooperation. In the driving process, the third gear 21 takes the second transmission shaft 19' as a rotating shaft; the second motor 20 drives the third gear 21 to rotate, the third gear 21 drives the fourth gear 22 to rotate, and thus the fourth gear 22 drives the driven shaft 7 to rotate. In particular, the driving shaft 6 rotates in the opposite direction to the driven shaft 7.
In the present embodiment, two groups of the energizing components are respectively disposed at two ends of the rolling mechanism, and for avoiding redundant description, only one side is described below. As shown in fig. 6, the power-up assembly includes a pulse power supply 23, a positive power-up mold 24, a positive cable 25, a negative power-up mold 26 and a negative cable 27, wherein the positive power-up mold 24 is connected with the driving shaft 6 through a thread, one end of the positive cable 25 is connected with the pulse power supply 23, and the other end is fixedly connected with the positive power-up mold 24 through a bolt and a nut; the negative pole adds the electric component and includes that negative pole adds electric mould 26 and passes through threaded connection with driven shaft 7, and pulse power 23 is connected to one end of negative pole cable 27, and the electric current flows through positive pole cable 20, anodal adds electric mould 19, driving shaft 6, drive roll 3, metal work piece, driven voller 4, driven shaft 7, negative pole adds electric mould 21 and negative pole cable 22 in proper order.
Finally, the sensing device of the present invention includes an encoder, a displacement sensor, a force sensor, a temperature sensor, and a console 28, as shown in FIG. 1. The encoder is arranged at the side of the eccentric wheel 12 and is used for detecting the deflection angle of the eccentric wheel 12 so as to control the rotation of the eccentric wheel 12 according to the deflection angle; displacement sensors are respectively arranged on the driving shaft 6 and the driven shaft 7 and used for detecting the moving distance of the driving roller 3 and the driven roller 4 with mutual contact as a starting point, so that the thickness of the rolled metal workpiece is obtained; the force sensor and the temperature sensor are arranged on the driven roller 4 and used for measuring the pressure and the temperature of the roller; the collected data is presented on a display screen of the console 28.
The invention is further illustrated below by the method of use of the forming apparatus of the invention, comprising the specific steps of:
1) installing the parts according to the figure 1;
2) according to the thickness of a metal workpiece to be processed, a driving motor 13 is started to drive a worm 11 to rotate, a worm wheel 10 is rotated, an eccentric wheel 12 is driven to rotate, and therefore a driving shaft 6 is driven to ascend/descend;
3) after the adjustment is finished, the driving motor 13 is closed, and the metal workpiece is arranged on the clamp, so that the metal workpiece is placed between the driving roller 3 and the driven roller 4 and just contacts with the metal workpiece;
4) turning on the pulse power supply 23;
5) and starting the first motor 15 and the second motor 20, adjusting the rotating speed of the motors to obtain the required rolling speed, and starting the current-assisted array microstructure rolling forming experiment after the temperature is stable.
The micro-groove structure processed by the current-assisted large-area array microstructure asynchronous roll forming equipment designed by the invention has excellent performance, can be applied to a compact, rapid and strong heat exchanger, and greatly reduces the cost while ensuring the processing precision.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the present invention, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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 current-assisted large-area array microstructure asynchronous roll forming device is characterized by comprising a rack platform, a roll mechanism, an adjusting mechanism, a driving device and a power-up device;
the rolling mechanism comprises a driving roller (3), a driven roller (4), a driving shaft (6), a driven shaft (7) and a supporting assembly (8), an array microstructure is arranged on the surface of the driving roller (3) and is fixedly installed on the driving shaft (6), and the driving shaft (6) is horizontally arranged above the rack platform through the supporting assembly (8); the driven roller (4) is fixedly arranged on the driven shaft (7), and the driven shaft (7) is horizontally arranged above the rack platform through the supporting component (8); the driving roller (3) and the driven roller (4) are arranged in parallel, and an adjustable gap is formed between the driving roller and the driven roller;
the adjusting mechanism is connected with the driving shaft (6) to adjust the size of a gap between the driving roller (3) and the driven roller (4);
the driving device comprises a driving roller driving component for driving the driving shaft (6) to drive the driving roller (3) to rotate and a driven roller driving component for driving the driven shaft (7) to drive the driven roller (4) to rotate, and the rotating directions of the driving shaft (6) and the driven shaft (7) are opposite;
the power-up component comprises a pulse power supply (23), a positive power-up component and a negative power-up component, one end of the positive power-up component is connected with the driving shaft (6), and the other end of the positive power-up component is connected with the pulse power supply (23); one end of the negative pole electricity-adding component is connected with the driven shaft (7), and the other end of the negative pole electricity-adding component is connected with the pulse power supply (23).
2. The current assisted large area array microstructure asynchronous roll forming apparatus of claim 1, it is characterized in that the adjusting mechanism comprises a worm wheel (10), a worm (11), an eccentric wheel (12) and a driving motor (13), the output end of the driving motor (13) is connected with the worm (11), the worm (11) is meshed with the worm wheel (10), the worm wheel (10) is fixedly connected with the outer edge of the eccentric wheel (12), the central flange of the eccentric wheel (12) is rotatably connected with the supporting component (8), the supporting component (8) is provided with a through arc-shaped guide groove, the driving shaft (6) extends through the arc-shaped guide groove and is connected with an eccentric hole of the eccentric wheel (12), the driving shaft (6) is rotationally connected with the groove surface of the arc-shaped guide groove and can move along the arc-shaped guide groove; the worm wheel (10) drives the eccentric wheel (12) to rotate around a central flange in a plane perpendicular to the driving roller (3), and the arc-shaped guide groove, the worm wheel (10) and the eccentric wheel (12) are concentric.
3. The asynchronous roll forming device of current-assisted large area array microstructure according to claim 1, wherein the driving roll driving mechanism comprises a first motor (15), a first gear (16), a second gear (17) and a first transmission shaft (19), the first motor (15) is fixedly installed on the frame platform, the output end of the first motor (15) is connected with the first gear (16) through the first transmission shaft (19), the second gear (17) is connected with the driving shaft (6) and meshed with the first gear (16), and the meshing depth and angle of the first gear (16) and the second gear (17) are equal to the adjustable range of the gap between the driving roll (3) and the driven roll (4);
driven roller actuating mechanism includes second motor (20), third gear (21), fourth gear (22) and second transmission shaft (19 '), second motor (20) fixed mounting in on the frame platform, second motor (20) output pass through second transmission shaft (19') with third gear (20) are connected, fourth gear (21) with driven shaft (7) are connected and with third gear (20) meshing.
4. The asynchronous roll forming device of current-assisted large area array microstructure according to claim 1, wherein the positive electrode powered assembly comprises a positive electrode powered mold (24) and a positive electrode cable (25), one end of the positive electrode powered mold (24) is connected with the driving shaft (6), one end of the positive electrode cable (25) is connected with the pulse power supply (23), and the other end is connected with the other end of the positive electrode powered mold (24); the negative pole power-on assembly comprises a negative pole power-on mold (26) and a negative pole cable (27), one end of the negative pole power-on mold (26) is connected with the driven shaft (7), one end of the negative pole cable (27) is connected with the pulse power supply (23), and the other end of the negative pole cable is connected with the other end of the negative pole power-on mold (26).
5. The asynchronous roll forming apparatus of current assisted large area array microstructure according to claim 1, wherein the sensing device comprises an encoder, two displacement sensors, a force sensor, a temperature sensor and a self-control table (28), the encoder is arranged at the side of the eccentric wheel (12) for detecting the deflection angle of the eccentric wheel (12) to control the rotation of the eccentric wheel (12) according to the detected deflection angle; two displacement sensors are respectively arranged on the driving shaft (6) and the driven shaft (7) and used for checking the moving distance of the driving roller (3) and the driven roller (4) with the mutual contact as a starting point so as to accurately control the pressing amount of the roller; the force sensor and the temperature sensor are arranged on the driven roller (4) to measure the roller pressure and temperature; the data collected by the temperature sensor is displayed on a display screen of the console (28) through the encoder, the two displacement sensors and the force sensor.
6. A current-assisted large area array microstructure asynchronous roll forming device according to one of claims 1 to 5, wherein the rack platform comprises a rack (1) and a platform (2) fixedly mounted on the rack (1), the rack (1) comprises three small rack modules with the same structure welded by section bars, and the platform (2) is directly cut from a steel plate.
7. A current-assisted large area array microstructure asynchronous roll forming device according to any one of claims 1 to 5, wherein the supporting assembly (8) comprises a first fixing plate (8-1), a second fixing plate (8-2) and a third fixing plate (8-3) which are vertically mounted on the rack platform plate to plate, the two ends of the driving shaft (6) are respectively and rotatably connected with and extend through the first fixing plate (8-1) and the second fixing plate (8-2), and the two ends of the driven shaft (7) are respectively and rotatably connected with and extend through the first fixing plate (8-1) and the third fixing plate (8-3);
the first fixing plate (8-1) and the second fixing plate (8-2) are provided with three support columns at the upper ends, and two ends of each support column are fixedly connected with the first fixing plate (8-1) and the second fixing plate (8-2) respectively.
8. The asynchronous roll forming device of current assisted large area array microstructure according to claim 7, wherein the first fixing plate (8-1), the second fixing plate (8-2) and the third fixing plate (8-3) are made of insulating high temperature resistant bakelite plates.
9. A current-assisted large area array microstructure asynchronous roll forming device according to one of claims 1 to 5, wherein the driving shaft (6) and the driven shaft (7) are respectively connected with the supporting component (8) in a rotating way through a bearing (5), the driving shaft (6) and the driven shaft (7) are respectively connected with the inner ring of the bearing (5), and the outer ring of the bearing (5) is connected with the supporting component (8).
10. The asynchronous roll forming device of current assisted large area array microstructure according to claim 9, wherein the current applied by the powered assembly is switched in from the driving shaft (6) and led out from the driven shaft (7), an insulating seal is arranged between the driving shaft (6) and the inner ring of the bearing (5), and an insulating seal is arranged between the driven shaft (7) and the inner ring of the bearing (5) to avoid the current from being introduced to the rack platform.
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