CN114042779A - Aluminum alloy cylinder flattening process with rib plate formed by integral extrusion molding - Google Patents
Aluminum alloy cylinder flattening process with rib plate formed by integral extrusion molding Download PDFInfo
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- CN114042779A CN114042779A CN202111447478.5A CN202111447478A CN114042779A CN 114042779 A CN114042779 A CN 114042779A CN 202111447478 A CN202111447478 A CN 202111447478A CN 114042779 A CN114042779 A CN 114042779A
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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
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/05—Stretching combined with rolling
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Abstract
The invention provides an aluminum alloy cylinder flattening process for integrally extruded and formed ribbed plates, which comprises the following steps: splitting, flattening, roller type primary straightening, stretching straightening, roller type middle straightening and roller type fine straightening. The invention directly flattens the aluminum alloy cylinder with the rib plate which is integrally extruded into the aluminum alloy section, avoids the defect of great reduction of the integral structural strength caused by welding and other processes in the manufacturing of the aluminum alloy section, greatly improves the material utilization rate and the mechanical performance after forming compared with the section produced by integral milling, and can ensure the integral quality of high-performance equipment.
Description
Technical Field
The invention relates to the technical field of aluminum alloy section bar production, in particular to an aluminum alloy cylinder flattening process with a rib plate formed by integral extrusion molding.
Background
The integrally extruded aluminum alloy cylinder flattened section bar with the rib plates is a ship body material of a special ship and is a basic material of a high-end ship in China. At present, the material is imported from foreign countries, although the aluminum alloy cylinder with the rib plate can be integrally extruded in China, the flattening process is not completely mastered, so that China receives great development obstacle in the field of manufacturing special ships.
At present, the manufacturing methods of domestic ribbed aluminum profiles are basically two types: firstly, a plurality of aluminum alloy extruded ribbed slabs are welded into an integral wide-width ribbed plate aluminum alloy section in a welding mode; secondly, the material is manufactured by an integral milling and forming method. The ribbed aluminum profile manufactured by the tailor-welding method has uneven strength of the whole welded structure due to the existence of a plurality of splice welding seams, and cannot meet the requirements of advanced ships and spacecrafts; the integral milling forming method reduces the utilization rate of raw materials, and the generated residual stress increases the distortion tendency of the section bar, thereby influencing the integral quality of high-performance equipment.
The invention patent with application number 201811180051.1, named as 'a 7xxx series aluminum alloy wide-width high-rib thin-wall plate and an extrusion forming method thereof' and application number 201910389433.3, named as 'an aerospace aluminum alloy multi-variable cross-section extrusion section bar and a preparation method thereof' discloses preparing an integrally extruded cylinder sample, and then cutting and flattening the cylinder sample, but does not disclose how to cut and flatten the cylinder sample.
Although the chinese utility model patent with the application number of 201820109067.2 and the name of "aluminum alloy formed straightening device" provides an aluminum alloy formed straightening device, the method only straightens aluminum plate and cannot flatten the aluminum alloy cylinder with the ribbed plate.
Disclosure of Invention
According to the technical problem, the aluminum alloy cylinder flattening process with the rib plate is provided through integral extrusion forming.
The technical means adopted by the invention are as follows:
an aluminum alloy cylinder flattening process of an integrally extruded ribbed plate comprises the following steps:
splitting, namely splitting an aluminum alloy cylinder with a rib plate, which is integrally extruded and formed, along the axial direction of the aluminum alloy cylinder, and leaving a cutting seam extending along the axial direction of the aluminum alloy cylinder on the aluminum alloy cylinder after the aluminum alloy cylinder is split;
flattening: flattening the split aluminum alloy cylinder at the joint cutting position, wherein the aluminum alloy cylinder is changed into an arc shape from a cylindrical shape;
roller type primary straightening: sending the flattened arc-shaped aluminum alloy section into a roller type primary straightening machine in a state that a rib plate is upward for primary straightening; the roller type primary straightening machine comprises a first upper straightening device and a first lower straightening device which are arranged side by side, the first upper straightening device is provided with a first upper roller shaft, a plurality of first upper straightening roller rings are arranged on the first upper roller shaft, two ends of the first upper roller shaft are connected with a first upper roller shaft bearing seat, and the first upper roller shaft bearing seat is connected with a first opening degree adjusting device which drives the first upper roller shaft bearing seat to move up and down; the first lower straightening device is provided with a first lower roll shaft, a plurality of first lower straightening roll rings are arranged on the first lower roll shaft, and two ends of the first lower roll shaft are connected with a first lower roll shaft bearing seat; the rib plate of the aluminum alloy section is positioned between two adjacent first upper straightening roll rings for straightening, and the step is carried out for a plurality of passes;
stretching and straightening: stretching the primarily straightened aluminum alloy section along the axial direction of the aluminum alloy section;
straightening in a roller type: the method comprises the following steps of (1) loading the stretched aluminum alloy section into a straightening base plate in a state that a rib plate faces downwards, covering the straightening base plate on the side, which is not provided with the rib plate, of the aluminum alloy section, feeding the straightening base plate provided with the aluminum alloy section into a roller type middle straightening machine for straightening, wherein the roller type middle straightening machine is provided with a second upper roller system and a second lower roller system, the second upper roller system is provided with a plurality of second upper straightening rollers which are arranged along the axial direction of the aluminum alloy section, the second lower roller system is provided with a plurality of second lower straightening rollers which are arranged along the axial direction of the aluminum alloy section, and the second upper straightening rollers and the second lower straightening rollers are arranged in a staggered mode; and the aluminum alloy profile passes between the second upper roller system and the second lower roller system and is flattened under the action of the second upper roller system and the second lower roller system, and the step is carried out for a plurality of times.
Roller type fine straightening: feeding the aluminum alloy profile straightened in the middle into a roller type fine straightening machine for straightening in a state that a rib plate faces downwards, wherein the roller type fine straightening machine comprises a third upper straightening device and a third lower straightening device, the third upper straightening device is provided with a third upper roller shaft, a plurality of third upper straightening roller rings are arranged on the third upper roller shaft, two ends of the third upper roller shaft are connected with third upper roller shaft bearing seats, and the third upper roller shaft bearing seats are connected with a third opening degree adjusting device which drives the third upper roller shaft bearing seats to move up and down; the third lower straightening device is provided with a third lower roll shaft, a plurality of third lower straightening roll rings are arranged on the third lower roll shaft, and two ends of the third lower roll shaft are connected with third lower roll shaft bearing blocks; and the rib plate of the aluminum alloy section is positioned between two adjacent third upper straightening roll rings for straightening, and the step can be carried out for a plurality of times until the aluminum alloy section is in a flat plate shape.
The section of the rib plate is T-shaped, L-shaped or I-shaped.
And in the splitting step, a splitting saw is adopted, the splitting saw is provided with a splitting saw blade which travels along the axial direction of the aluminum alloy cylinder and feeds along the radial direction, and the splitting saw blade completes the splitting of the aluminum alloy cylinder after moving from one end to the other end of the aluminum alloy cylinder along the axial direction.
The flattening machine is adopted in the flattening step and comprises a plurality of swing arm devices which are distributed along the axial direction of the aluminum alloy cylinder, the swing arm devices comprise swing arms which are symmetrically arranged on two sides of the aluminum alloy cylinder, the tail ends of the swing arms are pointed, the tail ends of the swing arms are inserted into the cutting seams, and in the unfolding process, the tail ends of the swing arms swing towards the lower oblique direction to unfold the aluminum alloy cylinder into a circular arc shape.
In the roller type fine straightening machine, the bottom of the third lower straightening device is connected with an adjusting shim for adjusting the height of the third lower straightening device.
And in the step of stretching and straightening, a stretcher is adopted, and two ends of the primarily straightened aluminum alloy section in the axial direction are clamped on the stretcher for stretching.
Compared with the prior art, the invention has the following advantages:
according to the process for flattening the aluminum alloy cylinder with the rib plate by integrally extrusion molding, the aluminum alloy cylinder with the rib plate by integrally extrusion molding is directly flattened into the aluminum alloy section, the defect that the overall structural strength of the aluminum alloy section is greatly reduced due to welding and other processes in the production process is overcome, the material utilization rate and the mechanical performance after molding are greatly improved compared with the section produced by integrally milling, and the overall quality of high-performance equipment can be ensured.
Based on the reasons, the invention can be widely popularized in the fields of aluminum alloy section production and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flow chart of a process for flattening an aluminum alloy cylinder with a rib plate by integral extrusion forming according to an embodiment of the invention.
FIG. 2 is a side view of the primary roller leveler in the embodiment of the present invention.
FIG. 3 is a main view of the primary roller leveler in the embodiment of the present invention.
FIG. 4 is a schematic structural view of a first upper straightening device and a first lower straightening device in an embodiment of the invention.
FIG. 5 is a schematic view of a roll type leveler in the embodiment of the present invention.
FIG. 6 is a side view of the roll type fine leveler in the embodiment of the present invention.
FIG. 7 is a front view of the roll leveler in the embodiment of the present invention.
FIG. 8 is a schematic view showing the structure of a third upper straightening device and a third lower straightening device in the embodiment of the invention.
FIG. 9 is a schematic diagram of a flattening machine according to an embodiment of the present invention.
Fig. 10 is a schematic structural diagram of a swing arm device in an embodiment of the present invention.
Fig. 11 is a schematic structural view of the swing arm apparatus according to the embodiment of the present invention when it is deployed.
In the figure: 1. aluminum alloy cylinders/aluminum alloy profiles; 2. splitting and sawing; 3. flattening machine; 301. a small arm; 302. a small hydraulic cylinder; 303. a large arm; 304. a large hydraulic cylinder; 305. a frame; 306. a base; 307. a connecting beam; 4. a roller type primary straightening machine; 401. a first upper roller shaft; 402. a first upper straightening roll ring; 403. a first upper roll shaft bearing seat; 404. a hydraulic cylinder; 405. a first lower roll shaft; 406. a first lower straightening roll ring; 407. a first lower roll shaft bearing block; 408. a first limit mechanism; 409. a first long key; 410. a first limit mechanism; 5. a stretcher; 6. straightening the base plate; 7. a roll type middle straightening machine; 701. a second upper straightening roll; 702. a second lower leveling roll; 8. a roller type fine straightening machine; 801. a third upper roll shaft; 802. a third upper straightening roll ring; 803. a third upper roll shaft bearing seat; 804. a reduction motor; 805. a drive shaft; 806. a worm gear elevator; 807. a third lower roll shaft; 808. a first lower straightening roll ring; 809. a third lower roll shaft bearing block; 810. adjusting the gasket; 811. a third long key; 812. and a third limiting mechanism.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
As shown in fig. 1 to 11, an aluminum alloy cylinder flattening process for an integrally extruded ribbed plate includes:
subdividing: the aluminum alloy cylinder 1 with the rib plate which is integrally extruded and formed is cut along the axial direction, and the section of the rib plate is T-shaped, L-shaped or I-shaped. In this embodiment, a "T" shape is used. A cutting seam extending along the axial direction of the aluminum alloy cylinder is left on the aluminum alloy cylinder 1 after cutting; in the embodiment, a splitting saw 2 is adopted for splitting, the splitting saw 2 is provided with a splitting saw blade which travels along the axis 1 of the aluminum alloy cylinder and feeds along the radial direction, and the splitting saw blade completes the splitting of the aluminum alloy cylinder 1 after moving from one end to the other end of the aluminum alloy cylinder 1 along the axial direction.
Flattening: flattening the split aluminum alloy cylinder 1 at the joint cutting position, wherein the aluminum alloy cylinder 1 is changed into an arc shape from a cylindrical shape; in the specific implementation method, a flattening machine 3 is adopted for flattening, as shown in fig. 9-11, the flattening machine 3 comprises a plurality of swing arm devices which are distributed along the axial direction of the aluminum alloy cylinder 1, the swing arm devices are connected through a connecting beam 307, and the aluminum alloy cylinder 1 is placed on the connecting beam 307; the swing arm device comprises swing arms symmetrically arranged on two sides of the aluminum alloy cylinder 1, the tail ends of the swing arms are pointed, the tail ends of the swing arms are inserted into the cutting seams, and in the unfolding process, the tail ends of the swing arms swing towards the oblique lower side to unfold the aluminum alloy cylinder 1 into the arc shape. The swing arm comprises a large arm 303, a large hydraulic cylinder 304, a small arm 301, a pointed pusher dog arranged at the end part of the small arm 301 and a small hydraulic cylinder 302; a frame 305 is arranged on the base 306, and the inner end points of the two large arms 303 are assembled at the top point of the middle part of the frame 305 through a hinge shaft; the cylinder bodies of the two large hydraulic cylinders 304 are respectively connected with the two bottom ends of the frame 305 through hinge shafts; the top ends of the cylinder rods of the two large hydraulic cylinders 304 are respectively hinged with the bottom ends of the outer sides of the inflection points of the two large arms 303; the lower parts of the two small arms 301 are respectively hinged with the outer side vertexes of the two large arms 303 through hinge shafts; the bottoms of the two small hydraulic cylinders 302 are respectively fixedly connected with the two large arms 303, and cylinder rods are respectively connected with the bottom ends of the two small arms 301 through hinge shafts; the pulling claw is arranged at the upper end of the small arm 301 and is used for grabbing the edge of the object to be flattened and flattening the object.
Roller type primary straightening: sending the flattened arc-shaped aluminum alloy section 1 into a roller type primary straightening machine 4 in a state that a rib plate is upward for primary straightening; the radian of the arc-shaped aluminum alloy section bar 1 is developed from arc shape to straight direction, and further flattening is realized.
As shown in fig. 2 to 4, the roller type primary straightener 4 comprises a first upper straightener and a first lower straightener which are arranged side by side, the first upper straightener is provided with a first upper roller shaft 401, a plurality of first upper straightening roller rings 402 are arranged on the first upper roller shaft 401, two ends of the first upper roller shaft 401 are connected with first upper roller shaft bearing blocks 403, and the first upper roller shaft bearing blocks 403 are connected with a first opening degree adjusting device which drives the first upper roller shaft bearing blocks 403 to move up and down; the first opening degree adjusting means is a hydraulic cylinder 404. The first lower straightening device is provided with a first lower roll shaft 405, a plurality of first lower straightening roll rings 406 are arranged on the first lower roll shaft 405, and two ends of the first lower roll shaft 405 are connected with first lower roll shaft bearing seats 407; the first upper straightening roll ring 402 and the first lower straightening roll ring 406 are respectively in key connection with the first upper roll shaft 401 and the first lower roll shaft 405 through a first long key 409 and can slide on the first upper roll shaft 401 and the first lower roll shaft 405, and the first upper straightening roll ring 402 and the first lower straightening roll ring 406 are fixed on the first upper roll shaft 401 and the first lower roll shaft 405 through a first limiting mechanism 408; the rib plate of the aluminum alloy section 1 is positioned between two adjacent first upper straightening roll rings 402 for straightening, and the straightening is carried out for a plurality of passes; the first upper roller shaft 401 and the first lower roller shaft 405 are connected to a first rotating mechanism for driving them to rotate, and the first rotating mechanism may be a motor, a speed reducer, a connecting shaft, and the like.
Stretching and straightening: stretching the primarily straightened aluminum alloy section bar 1 along the axial direction; in the present embodiment, a stretcher 5 is used for stretching, and both ends of the primarily straightened aluminum alloy section 1 in the axial direction are clamped on the stretcher 5 for stretching. The axial defects of the aluminum alloy section bar 1 are improved, the aluminum alloy section bar is axially straightened, and the stretching direction is outward stretching.
Straightening in a roller type: and (3) loading the stretched aluminum alloy section 1 into a straightening base plate 6 with a rib plate facing downwards, covering the straightening base plate 6 on the side, without the rib plate, of the aluminum alloy section 1, and feeding the straightening base plate 6 loaded with the aluminum alloy section 1 into a roller type straightening machine 7 for straightening. As shown in fig. 5, the roll type middle straightening machine 7 has a second upper roll system having a plurality of second upper straightening rolls 701 arranged in the axial direction of the aluminum alloy section, and a second lower roll system having a plurality of second lower straightening rolls 702 arranged in the axial direction of the aluminum alloy section, and the second upper straightening rolls 701 and the second lower straightening rolls 702 are arranged alternately; the second upper straightening roller 701 and the second lower straightening roller 702 are connected with a second rotating mechanism for driving the second upper straightening roller and the second lower straightening roller to rotate. The aluminum alloy section passes through the space between the second upper roller system and the second lower roller system and is flattened under the action of the second upper roller system and the second lower roller system, and the step is carried out for a plurality of times, so that the aluminum alloy section 1 is in a nearly straight state in the direction perpendicular to the axial direction.
Roller type fine straightening: feeding the aluminum alloy profile 1 subjected to middle straightening into a roller type fine straightening machine 8 in a state that a rib plate faces downwards for straightening, wherein the roller type fine straightening machine 8 comprises a third upper straightening device and a third lower straightening device, the third upper straightening device is provided with a third upper roller shaft 801, a plurality of third upper straightening roller rings 802 are arranged on the third upper roller shaft, two ends of the third upper roller shaft 801 are connected with third upper roller shaft bearing seats 803, and the third upper roller shaft bearing seats 803 are connected with a third opening degree adjusting device for driving the third upper roller shaft bearing seats 803 to move up and down; the third opening degree adjusting device comprises a speed reducing motor 804, two output ends of the speed reducing motor 804 are respectively connected with input ends of two worm and gear lifters 806 through transmission shafts 805, and output ends of the two worm and gear lifters are respectively connected with two third upper roll shaft bearing seats 803. The third lower straightening device is provided with a third lower roll shaft 807, a plurality of third lower straightening roll rings 808 are arranged on the third lower roll shaft 807, and both ends of the third lower roll shaft 807 are connected with third lower roll shaft bearing seats 809; the third upper straightening roll ring 802 and the first lower straightening roll ring 808 are respectively connected with a third upper roll shaft 801 and a third lower roll shaft 807 through a third long key 811 and can slide on the third upper roll shaft 801 and the third lower roll shaft 807, and the third upper straightening roll ring 802 and the third lower straightening roll ring 808 are fixed on the third upper roll shaft 801 and the third lower roll shaft 807 through a third limiting mechanism 812; the bottom of the third lower roll bearing block 809 is connected with an adjusting shim 810 for adjusting the height of the third lower roll bearing block 809. The width of the third upper straightening roll ring 802 and the width of the third lower straightening roll ring 808 are smaller than the width of the first upper straightening roll ring 402 and the width of the first lower straightening roll ring 406. A third rotating mechanism for driving the third upper roller shaft 801 and the third lower roller shaft 807 to rotate is connected thereto. And the rib plate of the aluminum alloy section 1 is positioned between two adjacent third upper straightening roll rings for straightening, and the step can be carried out for a plurality of times until the aluminum alloy section 1 is in a flat plate shape. The aluminium alloy profile 1 is straightened out in a direction perpendicular to the axial direction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. The process for flattening the aluminum alloy cylinder with the rib plate by integrally extrusion molding is characterized by comprising the following steps of:
splitting, namely splitting an aluminum alloy cylinder with a rib plate, which is integrally extruded and formed, along the axial direction of the aluminum alloy cylinder, and leaving a cutting seam extending along the axial direction of the aluminum alloy cylinder on the aluminum alloy cylinder after the aluminum alloy cylinder is split;
flattening: flattening the split aluminum alloy cylinder at the joint cutting position, wherein the aluminum alloy cylinder is changed into an arc shape from a cylindrical shape;
roller type primary straightening: sending the flattened arc-shaped aluminum alloy section into a roller type primary straightening machine in a state that a rib plate is upward for primary straightening; the roller type primary straightening machine comprises a first upper straightening device and a first lower straightening device which are arranged side by side, the first upper straightening device is provided with a first upper roller shaft, a plurality of first upper straightening roller rings are arranged on the first upper roller shaft, two ends of the first upper roller shaft are connected with a first upper roller shaft bearing seat, and the first upper roller shaft bearing seat is connected with a first opening degree adjusting device which drives the first upper roller shaft bearing seat to move up and down; the first lower straightening device is provided with a first lower roll shaft, a plurality of first lower straightening roll rings are arranged on the first lower roll shaft, and two ends of the first lower roll shaft are connected with a first lower roll shaft bearing seat; the rib plate of the aluminum alloy section is positioned between two adjacent first upper straightening roll rings for straightening, and the step is carried out for a plurality of passes;
stretching and straightening: stretching the primarily straightened aluminum alloy section along the axial direction of the aluminum alloy section;
straightening in a roller type: the method comprises the following steps of (1) loading the stretched aluminum alloy section into a straightening base plate in a state that a rib plate faces downwards, covering the straightening base plate on the side, which is not provided with the rib plate, of the aluminum alloy section, feeding the straightening base plate provided with the aluminum alloy section into a roller type middle straightening machine for straightening, wherein the roller type middle straightening machine is provided with a second upper roller system and a second lower roller system, the second upper roller system is provided with a plurality of second upper straightening rollers which are arranged along the axial direction of the aluminum alloy section, the second lower roller system is provided with a plurality of second lower straightening rollers which are arranged along the axial direction of the aluminum alloy section, and the second upper straightening rollers and the second lower straightening rollers are arranged in a staggered mode; and the aluminum alloy profile passes between the second upper roller system and the second lower roller system and is flattened under the action of the second upper roller system and the second lower roller system, and the step is carried out for a plurality of times.
Roller type fine straightening: feeding the aluminum alloy profile straightened in the middle into a roller type fine straightening machine for straightening in a state that a rib plate faces downwards, wherein the roller type fine straightening machine comprises a third upper straightening device and a third lower straightening device, the third upper straightening device is provided with a third upper roller shaft, a plurality of third upper straightening roller rings are arranged on the third upper roller shaft, two ends of the third upper roller shaft are connected with third upper roller shaft bearing seats, and the third upper roller shaft bearing seats are connected with a third opening degree adjusting device which drives the third upper roller shaft bearing seats to move up and down; the third lower straightening device is provided with a third lower roll shaft, a plurality of third lower straightening roll rings are arranged on the third lower roll shaft, and two ends of the third lower roll shaft are connected with third lower roll shaft bearing blocks; and the rib plate of the aluminum alloy section is positioned between two adjacent third upper straightening roll rings for straightening, and the step can be carried out for a plurality of times until the aluminum alloy section is in a flat plate shape.
2. The process for flattening the aluminum alloy cylinder with the rib plate formed by integral extrusion molding according to claim 1, wherein in the roller type fine straightening machine, the bottom of the third lower straightening device is connected with an adjusting shim for adjusting the height of the third lower straightening device.
3. The process for flattening the aluminum alloy cylinder with the rib plate formed by integral extrusion molding according to claim 1, wherein the section of the rib plate is T-shaped, L-shaped or I-shaped.
4. The process for flattening the aluminum alloy cylinder with the rib plate formed by integral extrusion molding according to claim 1, wherein a splitting saw is adopted in the splitting step, the splitting saw is provided with a splitting saw blade which travels along the axial direction of the aluminum alloy cylinder and feeds along the radial direction, and the splitting saw blade completes the splitting of the aluminum alloy cylinder after moving from one end to the other end of the aluminum alloy cylinder along the axial direction.
5. The process for flattening the aluminum alloy cylinder with the rib plate by integral extrusion molding according to claim 1, wherein a flattening machine is adopted in the flattening step, the flattening machine comprises a plurality of swing arm devices which are distributed along the axial direction of the aluminum alloy cylinder, the swing arm devices comprise swing arms which are symmetrically arranged on two sides of the aluminum alloy cylinder, the tail ends of the swing arms are pointed, the tail ends of the swing arms are inserted into the cutting seams, and in the unfolding process, the tail ends of the swing arms swing towards the oblique lower side to unfold the aluminum alloy cylinder into the arc shape.
6. The process for flattening the aluminum alloy cylinder with the rib plate formed by integral extrusion molding according to claim 1, is characterized in that a stretcher is adopted in the stretching and straightening step, and two ends of the aluminum alloy section bar subjected to primary straightening in the axial direction are clamped on the stretcher to be stretched.
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|---|---|---|---|---|
| US2692421A (en) * | 1951-12-22 | 1954-10-26 | Hydropress Inc | Flattening of extruded stiffened sheets |
| FR1115908A (en) * | 1951-12-22 | 1956-05-02 | Hydropress | Method and apparatus for the production of reinforcing sheets integral with them |
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| CN110899383A (en) * | 2019-10-30 | 2020-03-24 | 太原科技大学 | Unfolding straightening method for arc section of thin-walled cylindrical part with outer transverse ribs |
| CN113333468A (en) * | 2021-06-09 | 2021-09-03 | 湖北美科精毅科技有限公司 | Unfolding and shape righting process of cylindrical extruded wall plate |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2692421A (en) * | 1951-12-22 | 1954-10-26 | Hydropress Inc | Flattening of extruded stiffened sheets |
| FR1115908A (en) * | 1951-12-22 | 1956-05-02 | Hydropress | Method and apparatus for the production of reinforcing sheets integral with them |
| SU1488059A1 (en) * | 1986-01-23 | 1989-06-23 | Производственное объединение "Новокраматорский машиностроительный завод" | Straightening arrangement |
| RU2010642C1 (en) * | 1991-05-05 | 1994-04-15 | Акционерное общество "Самарская металлургическая компания" | Plate for straightening ribbed panels |
| CN207839642U (en) * | 2018-01-22 | 2018-09-11 | 东莞市宏锦金属制品有限公司 | The molding apparatus for correcting of aluminium alloy |
| CN109277422A (en) * | 2018-10-10 | 2019-01-29 | 江苏亿和新材料有限公司 | A kind of high muscle thin-walled plate of 7xxx line aluminium alloy wide cut and its extrusion forming method |
| CN109570258A (en) * | 2018-11-15 | 2019-04-05 | 中南大学 | A kind of wide cut sheet with rib material and its integral forming method |
| CN110899383A (en) * | 2019-10-30 | 2020-03-24 | 太原科技大学 | Unfolding straightening method for arc section of thin-walled cylindrical part with outer transverse ribs |
| CN113333468A (en) * | 2021-06-09 | 2021-09-03 | 湖北美科精毅科技有限公司 | Unfolding and shape righting process of cylindrical extruded wall plate |
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| Title |
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| （苏）叶尔曼诺克著；李西铭，张渌泉译: "大型铝合金型材挤压技术与工模具优化设计", 北京：国防工业出版社, pages: 235 - 242 * |
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| CN114042779B (en) | 2023-10-03 |
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