CN112338051A - Ultrasonic-assisted incremental forming device and process for aluminum alloy ribbed thin-wall component - Google Patents
Ultrasonic-assisted incremental forming device and process for aluminum alloy ribbed thin-wall component Download PDFInfo
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- CN112338051A CN112338051A CN202010950052.0A CN202010950052A CN112338051A CN 112338051 A CN112338051 A CN 112338051A CN 202010950052 A CN202010950052 A CN 202010950052A CN 112338051 A CN112338051 A CN 112338051A
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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
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
- B21D31/005—Incremental shaping or bending, e.g. stepwise moving a shaping tool along the surface of the workpiece
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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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/008—Processes combined with methods covered by groups B21D1/00 - B21D31/00 involving vibration, e.g. ultrasonic
Abstract
The invention discloses an ultrasonic auxiliary incremental forming device and process for an aluminum alloy ribbed thin-wall component. Based on the incremental forming device, the ribbed thin-wall plate is subjected to incremental deformation processing layer by utilizing small amplitude vibration of ultrasonic waves, so that the forming difficulty is reduced, the deformability of the material is improved, the internal grain structure of the material is further changed, and the surface quality and the workpiece strength of the ribbed thin plate are improved. The invention can realize three-dimensional motion in the processing process, improve the processing details and finish accurate deformation. The invention is also provided with a suspension liquid circulating system to realize the recycling of the suspension liquid and achieve the aim of saving the suspension liquid.
Description
Technical Field
The invention relates to the technical field of machining, in particular to an ultrasonic-assisted incremental forming device and process for an aluminum alloy ribbed thin-wall component.
Background
The ribbed thin-wall plate is a component widely applied to the high-precision field of aerospace and the like, is frequently used in the composition of airplane shells, is also widely applied to main bearing parts of airplanes such as wings and the like and even space stations, has excellent rigidity and strength, and can also greatly reduce the structural quality. Therefore, the manufacturing and deformation processing technology of the ribbed thin-walled plate plays an important role in the field of light-weight and high-strength metal manufacturing, and the importance of development and innovation of the technology is self-evident. Because of its high quality requirement, it is usually made of high-strength aluminum alloy, magnesium alloy, titanium alloy, but at the same time it is required to be able to be processed into more complex curvature, and at the same time it is unable to be directly deformed and processed because of the additional ribs, in order to achieve the required shape and curvature, it is usually necessary to consider the thin-wall plate and ribs as a whole and make plastic bending deformation. However, in the conventional thin plate with ribs, technical means such as extrusion molding, creep forming, roll forming, welding forming and the like are often used. However, the creep failure technology has the defects of complex deformation process, heavy and large equipment volume, large manual processing difficulty and difficult molding; the quality of the roll bending and extrusion technology is not high, various defects are often caused, the production efficiency is low, the large-scale and large-batch production of the ribbed thin-wall plate cannot be met, and the requirement cannot be met in a short time. It is no doubt that a new process for integrally processing a ribbed thin wall panel should continue to be sought, seeking innovation.
At present, methods related to the single-point incremental forming process of the thin-wall plate are limited in flat plates, and few new process outputs capable of integrally processing the ribbed thin-wall plate directly or by using auxiliary means are available. A patent of CN104690138A entitled "a magnesium alloy sheet ultrasonic vibration single-point progressive forming device and progressive forming method thereof" discloses a magnesium alloy sheet ultrasonic vibration single-point progressive forming device and progressive forming method thereof, which applies ultrasonic waves to single-point progressive forming.
In the common processing technology of the ribbed plates, because the ribs and the wall plates are simultaneously subjected to vertical extrusion force, the non-uniformity of force on the members is aggravated, and the defects of wrinkling, tilting, side bending and the like are easily generated in the ribs and the wall plates. Zhanhua in article integral wall plate filler roll bending forming process research expresses a first filler and then roll bending processing technology for ribbed thin-wall plates. A patent with publication number CN109877211A entitled "electromagnetic forming method for ribbed wallboard filler" discloses an electromagnetic forming method for ribbed wallboard filler, which comprises the steps of filling filler between grids of a ribbed wallboard, then performing electromagnetic forming, determining a reasonable forming station in the electromagnetic forming process, and finally finishing the integral processing of the ribbed thin-walled plate. However, this method is used for extrusion molding, and if it is used in single-point progressive molding, there are disadvantages that the processing is impossible due to the difference in height between the filler and the rib caused by the difference in material, and the molding force is not uniformly applied to each point of the member due to the large strength of the longitudinal rib plate.
Disclosure of Invention
One of the objectives of the present invention is to provide an ultrasonic assisted incremental forming device for an aluminum alloy ribbed thin-walled member, so as to achieve the integral processing of the ribbed thin-walled member and reduce the defects in the forming process of the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: an ultrasonic-assisted incremental forming device for an aluminum alloy ribbed thin-wall component comprises a box body and an incremental forming device arranged in the box body. The incremental forming device comprises a workbench, an abrasive suspension storage box arranged below the workbench, general brackets positioned on two sides of the workbench, a clamping device arranged on the workbench, and an ultrasonic auxiliary forming device and a spraying device which are arranged right above the workbench.
The workbench is fixedly arranged at the bottom of the box body, and through holes which are uniformly distributed are formed in the table top of the workbench. Two parallel lead screws are arranged on the upper end face of the workbench, one ends of the two lead screws are connected with the stepping motor, and the other ends of the two lead screws are fixedly arranged on the workbench through connecting columns; a movable plate is arranged above the screw rod and is connected with the screw rod through a slide block on the lower end surface of the movable plate; clamping device is installed to the movable plate up end, clamping device includes that two the same device press from both sides, and the device presss from both sides including support column, motor, connecting piece, punch holder, lower plate and adjusting bolt.
The main supports positioned on two sides of the workbench comprise two vertical cylinders and a cross beam connected with the upper ends of the vertical cylinders, the cross beam comprises a threaded rod and two transverse polished rods, and the threaded rod can rotate relatively; a servo motor is arranged on the upper side of one end of the cross beam, a driving wheel is arranged on a rotating shaft of the servo motor, a driven wheel is arranged at the same end of the threaded rod, and the driving wheel is connected with the driven wheel through a chain belt; the crossbeam is sleeved with a sliding block, the lower end of the sliding block is fixedly provided with a longitudinal guide rod which is vertical to the crossbeam, and the ultrasonic auxiliary forming device and the material spraying device are arranged on the longitudinal guide rod.
The material spraying device comprises a storage box and a spray pipe, the storage box is concave and is inversely arranged on the longitudinal guide rod, and the lower end of the storage box is provided with two nozzles; the ultrasonic auxiliary forming device is arranged in the recess of the storage box and comprises an ultrasonic generator, an ultrasonic transducer, an ultrasonic amplitude transformer and a tool head which are sequentially assembled and installed to play a role in processing.
Furthermore, the front end of the box body is provided with an opening, a protective door is arranged at the opening, the protective door is a side opening door and is connected through a hinge, and the hinge is fixedly arranged on a side column at the front end of the box body through a screw; the protective door is provided with a control panel, and a single chip microcomputer is fixedly arranged in the control panel and used for controlling the tool head to perform a single-point progressive forming process; the protective door is also provided with a handle.
Furthermore, a circle of annular clamping groove is formed in the inner wall of the position above the abrasive suspension storage tank, a clamping block is installed inside the clamping groove, and the filter screen is fixedly connected to the clamping block; the outside of the abrasive suspension storage tank is also provided with a circulating pump, the suction end of the circulating pump is communicated with the lower part of the abrasive suspension storage tank, and the output end of the circulating pump is communicated with the storage tank through a circulating pipe.
Furthermore, two vertical cylinders in the main support can be synchronously stretched and contracted to drive the upper structure of the cross beam to move up and down; the material spraying device and the ultrasonic auxiliary forming device can move left and right along the direction of the threaded rod and can move front and back along the direction of the longitudinal guide rod.
Furthermore, two device clamps in the clamping device are oppositely arranged, and damping cushions are arranged on the inner sides of the upper clamping plate and the lower clamping plate.
The second purpose of the invention is to disclose a processing technology of the integral blank of the aluminum alloy ribbed wallboard component based on the incremental forming device, which comprises the following steps:
filling materials; filling rubber or metal filler into grids among ribs of the aluminum alloy ribbed wallboard blank to be processed, placing the filled workpiece to be processed on the device clamp, and adjusting the adjusting bolt to enable the upper clamping plate and the lower clamping plate to clamp the workpiece to be processed.
Step two, plate covering; on the basis of the blank filled in the step one, an aluminum alloy shroud plate with a certain thickness is additionally arranged to create a smooth surface to finish the gradual forming work, and meanwhile, the compression deformation of rubber is reduced, and the uneven stress of the blank is reduced.
Step three, performing progressive forming; firstly, a switch of the whole device is turned on, and the control panel controls the cylinder to contract to drive the whole beam to descend to a specified position; the ultrasonic generator operates to enable the tool head to be in a vibration working state and act on the surface of the aluminum alloy shroud plate, so that deformation processing of the ribbed thin-wall component is indirectly realized, and the ribbed thin-wall component is gradually formed; secondly, according to a program design designed in advance by a singlechip in a control panel, a servo motor is controlled to operate to drive a threaded rod to rotate, then the whole ultrasonic auxiliary forming device is driven to reciprocate along the direction of the threaded rod, and the whole ultrasonic auxiliary forming device can reciprocate along the direction of a longitudinal guide rod, so that a tool head is subjected to a regular incremental forming process, and a blank is deformed through local and successive trace extrusion force accumulation; and then, controlling the cylinder to gradually extend out to drive the tool head to realize longitudinal movement in the Y-axis direction, so that the gradual forming processing layer by layer is completed until the workpiece is completed.
Taking out; after the workpiece is machined, the cylinder extends out completely, the stepping motor operates to drive the movable plate to move to the front position of the box body, and an operator can take out the movable plate conveniently.
Preferably, the filler in the first step is sulfur-regulated chloroprene rubber, and the sulfur-regulated chloroprene rubber filler is injected into the rib grids by using a filling method.
Preferably, the thickness of the covering plate in the second step is added according to the thickness of the blank, the thickness of the covering plate is inversely proportional to the thickness of the blank, and the maximum thickness of the covering plate is not more than 1 mm.
The ultrasonic processing introduced by the invention is a tool which utilizes ultrasonic frequency to vibrate with small amplitude, and can obviously improve the deformation capacity of workpiece materials by the hammering action of the grinding material between the tool and the workpiece, which is dissociated in liquid, on the processed surface. Ultrasonic machining is commonly used for piercing, extruding, welding, trepanning and polishing, and single point progressive forming machining may use ultrasonic machining.
Compared with the prior art, the invention has the following beneficial effects: the aluminum alloy clad plate with specific thickness is additionally arranged on the surface of the blank to form a smooth surface, so that a tool head does not need to be loaded on non-compression-resistant chloroprene rubber, and the problem of unstable motion path caused by the gap between the filler and the rib plate does not need to be considered, the forming difficulty is reduced, the deformability of the material is improved, the internal grain structure of the material is further changed, and the surface quality of the ribbed thin plate and the strength of a workpiece are improved. The invention designs a matched full-automatic processing machine tool system, which can realize three-dimensional motion in the processing process, improve the processing details and finish accurate deformation. The invention is also provided with a suspension liquid circulating system to realize the recycling of the suspension liquid and achieve the aim of saving the suspension liquid.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a front view of the guard door of the present invention;
FIG. 3 is a top view of the table of the present invention;
FIG. 4 is a structural view of a clamping device in the present invention;
FIG. 5 is an enlarged view of A in FIG. 1;
FIG. 6 is a structural and exploded view of an aluminum alloy ribbed sheet;
in the figure: 1. the grinding machine comprises a box body, 2, a workbench, 3, a main bracket, 4, an abrasive suspension storage box, 5, a clamping device, 6, a storage box, 7, a nozzle, 8, an ultrasonic generator, 9, an ultrasonic transducer, 10, an ultrasonic amplitude transformer, 11, a tool head, 12, a longitudinal guide rod, 13, a filter screen, 14, a clamping groove, 15, a clamping block, 16, ribbed thin-walled plate blanks, 17, a filler, 18 and a cover plate; 101. a protective door 102, a control panel 103, hinges 104 and a handle;
21. the device comprises a lead screw 22, a stepping motor 23, a connecting column 24, a moving plate 25, a sliding block 26 and a through hole;
30. the device comprises a cylinder 31, a threaded rod 32, a transverse polish rod 33, a servo motor 34, a driving wheel 35 and a driven wheel;
41. circulation pump, 42, circulation pipe; 51. support column, 52, motor, 53, connecting piece, 54, upper clamping plate, 55, lower clamping plate, 56, adjusting bolt, 57, shock pad.
Detailed Description
It should be noted that, in the present invention, the terms such as "upper", "lower", "front", "rear", and the like indicate the orientation or the positional relationship based on the drawings, and the terms are only the relational terms determined for describing the structural relationship of the components of the present invention, are not specific to any components of the present invention, and are not to be construed as limiting the present invention.
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:
as shown in fig. 1, the ultrasonic assisted incremental forming device for the aluminum alloy ribbed thin-wall component comprises a box body 1 and an incremental forming device installed inside the box body 1. The incremental forming device comprises a workbench 2, an abrasive suspension storage box 4 arranged below the workbench 2, general brackets 3 positioned on two sides of the workbench 2, a clamping device 5 arranged on the workbench 2, and an ultrasonic auxiliary forming device and a spraying device which are arranged right above the workbench 2.
Referring to fig. 3, the working table 2 is fixedly installed at the bottom of the box 1, and through holes 26 are uniformly arranged on the table top. Two parallel lead screws 21 are arranged on the upper end face of the workbench 2, one end of each lead screw 21 is connected with a rotating shaft of the stepping motor 22, the other end of each lead screw 21 is fixedly installed on the upper end face of the workbench 2 through a connecting column 23, and the lead screws 21 can rotate relative to the connecting columns 23. A moving plate 24 is mounted above the two screws 21, two sliders 25 are arranged on the lower end surface of the moving plate 24, threaded holes penetrating through the sliders 25 are formed in the sliders 25, and the moving plate 24 is connected to the screws 21 in a sleeved mode through the sliders 25 on the lower end surface. The upper end surface of the moving plate 24 is provided with a clamping device 5, the clamping device 5 comprises two device clamps with the same structure, the two device clamps are oppositely arranged on the moving plate 24, with reference to fig. 4, the device clamps comprise a support column 51, a motor 52, a connecting piece 53, an upper clamp plate 54, a lower clamp plate 55 and an adjusting bolt 56, the support column 51 is fixedly connected to the moving plate 24 through a bolt, the motor 52 is fixedly arranged at the upper end of the outer side of the support column 51, the rotating shaft of the motor 52 penetrates through the support column 51, the connecting piece 53 is arranged at the tail end of the rotating shaft, the connecting piece 53 is in a T shape, the lower clamp plate 55 is fixedly arranged on the connecting piece 53, the upper clamp plate 54 is movably arranged on the connecting piece 53, bolt holes are formed in the upper clamp plate 54 and the lower clamp plate 55, the adjusting bolt 56 penetrates through the bolt holes, the upper clamp plate and the, when the influence brought by the vibration is reduced, the workpiece to be machined is clamped in an auxiliary manner.
The general support 3 positioned at two sides of the workbench 2 comprises two vertical cylinders 30 and a cross beam connected with the upper ends of the vertical cylinders 30, the cross beam comprises a threaded rod 31 and two transverse polish rods 32, and the threaded rod 31 is positioned between the two transverse polish rods 32. The lower ends of the two vertical cylinders 30 are fixedly arranged on the bottom surface of the box body 1, the two transverse polish rods 32 are fixedly connected with the upper ends of the vertical cylinders 30 in parallel, and the threaded rod 31 is movably arranged at the upper ends of the vertical cylinders 30 and can rotate relatively. A servo motor 33 is arranged on the upper side of the right end of the cross beam, a driving wheel 34 is arranged on a rotating shaft of the servo motor 33, a driven wheel 35 is arranged at the corresponding position of the right end of the threaded rod 31, and the driving wheel 34 is connected with the driven wheel 35 through a chain belt. The beam is also sleeved with a sliding block, and the sliding block is provided with a threaded hole and two unthreaded holes which respectively correspond to the threaded rod 31 and the transverse polished rod 32; the lower end of the sliding block is fixedly provided with a longitudinal guide rod 12 which is vertical to the cross beam, the longitudinal guide rod 12 is provided with external threads, and the ultrasonic auxiliary forming device and the material spraying device are arranged on the longitudinal guide rod 12.
The material spraying device comprises a storage box 6 and a spray pipe 7, wherein the storage box 6 is concave and is inversely arranged on the longitudinal guide rod 12, and internal threads are arranged at the temporal part of the storage box and are matched with the external threads on the longitudinal guide rod 12; the upper part of the storage box 6 is also provided with a control motor which controls the control motor to move along a longitudinal guide rod 12; the lower end of the storage box 6 is provided with two symmetrical nozzles 7. The ultrasonic auxiliary forming device is arranged in the recess of the storage box 6 and comprises an ultrasonic generator 8, an ultrasonic transducer 9, an ultrasonic amplitude transformer 10 and a tool head 11, wherein the ultrasonic generator 8, the ultrasonic transducer 9, the ultrasonic amplitude transformer 10 and the tool head 11 are sequentially combined.
Still be equipped with abrasive material suspension bin 4 in the below of workstation 2, combine fig. 5, the top position of abrasive material suspension bin 4 inner wall is equipped with a week ring groove 14, and the inside of draw-in groove 14 is inlayed and is equipped with fixture block 15, and filter screen 13 fixed connection is on fixture block 15, and the suspension that sprays in the course of working falls into abrasive material suspension bin 4 through the filtration of filter screen 13. And a circulating pump 41 is further arranged at the bottom of the box body 1 and outside the abrasive suspension storage tank 4, the suction end of the circulating pump 41 is communicated with the lower part of the abrasive suspension storage tank 4, the output end of the circulating pump is communicated with the storage tank 6 through a circulating pipe 42, and the suspension is pumped into the storage tank 6 for recycling.
As shown in fig. 2, the front end of the box body 1 is open, a protective door 101 is installed at the opening, the protective door 101 is a side opening door, and is connected to a side post at the front end of the box body 1 through a hinge 103. The protective door 101 is provided with a control panel 102, and a single chip microcomputer is arranged in the control panel 102; the control panel 102 is connected with the vertical cylinder 31, the servo motor 33, the motor in the storage box 6, the ultrasonic generator 8, the stepping motor 22, the motor in the clamping device 5 and the circulating pump 41 through lines, and the operation of the controllers is respectively controlled. Meanwhile, the right side of the protection door 101 is also provided with a handle 104. The type of singlechip can be HT66F018, the type of servo motor 33 can be Y90S-2, the type of step motor 22 can be Y80M1-2, the type of vertical cylinder 30 can be J64RT2UNIVER, the type of circulating pump 41 can be ISGD.
The working principle of the incremental forming device is as follows, and the processing technology comprises the following steps:
firstly, filling the aluminum alloy ribbed thin-walled plate blank 16 to be processed; the rubber or metal filler is filled into the grids among the ribs of the ribbed thin-walled plate, and the sulfur-regulated chloroprene rubber is specially used in consideration of the favorable physical and mechanical properties of the chloroprene rubber, higher tensile strength, elongation and reversible crystallinity, good adhesion, aging resistance and heat resistance and in consideration of the cost of utilizing the metal filler. After the filling is finished, the aluminum alloy shroud plate 18 with a specific thickness is additionally arranged on the filling, so that a smooth surface is created to finish the gradual forming work, the compression deformation of rubber is reduced, and the uneven stress of the blank is reduced.
Secondly, clamping the complete aluminum alloy ribbed thin-walled plate to be processed in a device clamp; the upper clamping plate 54 is driven to approach the lower clamping plate 55 by rotating the adjusting bolt 56, and the workpiece to be processed is clamped. The two stepping motors 22 on the worktable 2 run synchronously to move the moving plate 24 to the right below the tool head 11; two motors in the clamping device 5 synchronously operate to adjust the angle of the workpiece to be machined; the vertical cylinder 30 contracts synchronously to drive the crossbeam and the upper mounting structure to descend integrally, and the tool head 11 contacts with a workpiece to be machined.
Then, the ultrasonic generator 8 operates to drive the tool head 11 to be in a vibration state through the conversion of the ultrasonic transducer 9 and the ultrasonic amplitude transformer 10; the control panel 102 controls the servo motor 33 or the motor installed inside the storage box 6 according to the internal processing program of the single chip microcomputer installed inside the control panel, so that the tool head 11 can respectively reciprocate transversely along the threaded rod 31 or reciprocate back and forth along the longitudinal guide rod 12, and meanwhile, the three-dimensional operation is realized by controlling the vertical cylinder 30 to stretch. During the deformation of the workpiece to be worked by the tool head 11, the circulation pump 41 is operated to pump the abrasive suspension from the abrasive suspension storage tank 4, to the storage tank 6 via the circulation pipe 42, and to spray it through the nozzle 7. The tool head 11 processes the workpiece layer by layer, and after one layer is processed, the tool head descends a small distance to continue to complete the processing deformation of the next layer, and the processing is finally completed in a circulating reciprocating manner. Suspension sprayed in the machining process falls into the abrasive suspension storage tank 4 through the through holes 26 on the workbench 2, impurities are filtered out through the filter screen 13, and recycling is achieved.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention, and the present invention is not limited to the above-mentioned examples, and those skilled in the art should also make changes, modifications, additions or substitutions within the spirit and scope of the present invention.
Claims (8)
1. The utility model provides an aluminum alloy thin wall component with muscle supersound is supplementary to take shape device gradually which characterized in that: the device comprises a box body and a progressive forming device arranged in the box body, wherein the progressive forming device comprises a workbench, an abrasive suspension storage box arranged below the workbench, general brackets positioned at two sides of the workbench, a clamping device arranged on the workbench, an ultrasonic auxiliary forming device arranged right above the workbench and a material spraying device;
the workbench is fixedly arranged at the bottom of the box body, and through holes which are uniformly distributed are formed in the table top of the workbench; two parallel lead screws are arranged on the upper end face of the workbench, one ends of the two lead screws are connected with the stepping motor, and the other ends of the two lead screws are fixedly arranged on the workbench through connecting columns; a movable plate is arranged above the screw rod and is connected with the screw rod through a slide block on the lower end surface of the movable plate; the upper end face of the movable plate is provided with a clamping device, the clamping device comprises two identical device clamps, and each device clamp comprises a support column, a motor, a connecting piece, an upper clamping plate, a lower clamping plate and an adjusting bolt;
the main supports positioned on two sides of the workbench comprise two vertical cylinders and a cross beam connected with the upper ends of the vertical cylinders, the cross beam comprises a threaded rod and two transverse polished rods, and the threaded rod can rotate relatively; a servo motor is arranged on the upper side of one end of the cross beam, a driving wheel is arranged on a rotating shaft of the servo motor, a driven wheel is arranged at the same end of the threaded rod, and the driving wheel is connected with the driven wheel through a chain belt; the crossbeam is sleeved with a sliding block, the lower end of the sliding block is fixedly provided with a longitudinal guide rod which is vertical to the crossbeam, and the ultrasonic auxiliary forming device and the material spraying device are arranged on the longitudinal guide rod;
the material spraying device comprises a storage box and a spray pipe, the storage box is concave and is inversely arranged on the longitudinal guide rod, and the lower end of the storage box is provided with two nozzles; the ultrasonic auxiliary forming device is arranged in the recess of the storage box and comprises an ultrasonic generator, an ultrasonic transducer, an ultrasonic amplitude transformer and a tool head which are sequentially assembled and installed to play a role in processing.
2. The ultrasonic-assisted incremental forming device for the aluminum alloy ribbed thin-wall component according to claim 1, characterized in that: the front end of the box body is provided with an opening, a protective door is arranged at the opening, the protective door is a side opening door and is connected through a hinge, and the hinge is fixedly arranged on a side column at the front end of the box body through a screw; the protective door is provided with a control panel, and a single chip microcomputer is fixedly arranged in the control panel and used for controlling the tool head to perform a single-point progressive forming process; the protective door is also provided with a handle.
3. The ultrasonic-assisted incremental forming device for the aluminum alloy ribbed thin-wall component according to claim 2, characterized in that: a circle of annular clamping grooves are formed in the inner wall of the position above the abrasive suspension storage tank, clamping blocks are mounted inside the clamping grooves, and the filter screen is fixedly connected to the clamping blocks; the outside of the abrasive suspension storage tank is also provided with a circulating pump, the suction end of the circulating pump is communicated with the lower part of the abrasive suspension storage tank, and the output end of the circulating pump is communicated with the storage tank through a circulating pipe.
4. The ultrasonic-assisted incremental forming device for the aluminum alloy ribbed thin-wall component according to claim 3, characterized in that: two vertical cylinders in the main support can be synchronously stretched and contracted to drive the upper structure of the cross beam to move up and down; the material spraying device and the ultrasonic auxiliary forming device can move left and right along the direction of the threaded rod and can move front and back along the direction of the longitudinal guide rod.
5. The ultrasonic-assisted incremental forming device for the aluminum alloy ribbed thin-wall component according to claim 4, characterized in that: two device clamps in the clamping device are oppositely arranged, and damping cushions are arranged on the inner sides of the upper clamping plate and the lower clamping plate.
6. A processing technology of an integral blank of an aluminum alloy ribbed wallboard component is based on the incremental forming device of any one of claims 1 to 5, and is characterized in that: the method specifically comprises the following steps of,
filling materials; filling rubber or metal filler into grids among ribs of the aluminum alloy ribbed wallboard blank to be processed, placing the filled workpiece to be processed on a device clamp, and adjusting an adjusting bolt to enable an upper clamping plate and a lower clamping plate to clamp the workpiece to be processed;
step two, plate covering; on the basis of the blank filled in the step one, an aluminum alloy shroud plate with a certain thickness is additionally arranged to create a smooth surface to finish the gradual forming work, and meanwhile, the compression deformation of rubber is reduced, and the uneven stress of the blank is reduced;
step three, performing progressive forming; firstly, a switch of the whole device is turned on, and the control panel controls the cylinder to contract to drive the whole beam to descend to a specified position; the ultrasonic generator operates to enable the tool head to be in a vibration working state and act on the surface of the aluminum alloy shroud plate, so that deformation processing of the ribbed thin-wall component is indirectly realized, and the ribbed thin-wall component is gradually formed; secondly, according to a program design designed in advance by a singlechip in a control panel, a servo motor is controlled to operate to drive a threaded rod to rotate, then the whole ultrasonic auxiliary forming device is driven to reciprocate along the direction of the threaded rod, and the whole ultrasonic auxiliary forming device can reciprocate along the direction of a longitudinal guide rod, so that a tool head is subjected to a regular incremental forming process, and a blank is deformed through local and successive trace extrusion force accumulation; then, the cylinder is controlled to gradually extend out to drive the tool head to realize longitudinal movement in the Y-axis direction, so that the gradual forming processing layer by layer is completed until the workpiece is completed;
taking out; after the workpiece is machined, the cylinder extends out completely, the stepping motor operates to drive the movable plate to move to the front position of the box body, and an operator can take out the movable plate conveniently.
7. The process for manufacturing the integral blank of the aluminum alloy ribbed wallboard component according to claim 6, wherein: and step one, filling the filler into sulfur-regulated chloroprene rubber, and injecting the sulfur-regulated chloroprene rubber filler into the rib grids by using a filling method.
8. The process for manufacturing the integral blank of the aluminum alloy ribbed wallboard component according to claim 6, wherein: and in the second step, the thickness of the covering plate is added according to the thickness of the blank, the thickness of the covering plate and the blank are in inverse proportion, and the maximum thickness of the covering plate is not more than 1 mm.
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| CN115121456A (en) * | 2022-07-12 | 2022-09-30 | 刘欢 | Surface treatment process of aluminum alloy part |
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| CN112338051B (en) | 2022-06-24 |
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