CN209318524U - A kind of aviation big specification hollow profile tension straingtening equipment and its plug - Google Patents

Abstract

This application discloses a kind of plugs, including at least two plug monomers, each plug monomer includes big head section and small head section, the big head section is equipped with boss so as to form seam allowance between the big head section and the small head section, the end of the small head section is inclined-plane along the two sides of its short transverse, the height of the small head section is consistent with the rectangular opening of hollow profile height, and the height of the big head section is greater than the rectangular opening height of the hollow profile.Plug provided herein has carried out light-weight design, sets at least two pieces for plug, alleviates the weight of single-piece plug, is conducive to manually assemble and disassemble convenience when unloading, improves production efficiency, reduce the labor intensity of operator, eliminate safe hidden trouble.Disclosed herein as well is a kind of big specification hollow profile tension straingtening equipment of aviation including above-mentioned plug.

Description

A kind of aviation big specification hollow profile tension straingtening equipment and its plug

Technical field

This application involves tension straingtening apparatus fields, more particularly to a kind of plug.In addition, the application further relates to a kind of packet Include the big specification hollow profile tension straingtening equipment of aviation of above-mentioned plug.

Background technique

National defense construction specific use big specification aluminium hollow profile, is needed, morpheme based on function by 1.8 meters of cut lengths Dimension precision requirement is high, it is desirable that curvature overall length is no more than 1.5mm, and bending+torsion, which is twisted, is no more than 3.0mm, much larger than GB or The superelevation essence grade requirement of T14846 " aluminium and aluminium alloy extruded hollow profile dimensional discrepancy ".

As shown in Figure 1, be product specification EL3277A, aviation hanger superelevation essence that alloy state is 2D70T6511 it is hollow The cross sectional shape of profile.EL3277A is with the rectangular opening for occupying section major part space, and the wall thickness of the surrounding of rectangular opening is significant It is thin.Since outer dimension is big, wall is thin, product deformation is larger after quenching, and quenched residual stress is big, needs to carry out product to stretch and rectify Directly, upper and lower curved, lateral bending is eliminated, the deformation defects such as stubborn is turned round and reduces or eliminates quenched residual stress.But existing tension straingtening Machine directly clamps hollow profile blank by the upper and lower nipper of stretching head and is stretched, and the cavity collapsing of retained part leads to difficulty To stretch；Plug is filled in rectangular opening, since clamping face injustice will lead to local pressure, when stretching easily occurs collet fracture, beats It slides and causes effectively carry out tension straingtening operation；Plug, groove filling cushion block, the friction of lower planes are filled in rectangular opening Pulling force required for power is not enough to that hollow profile is supported to align, the fracture of Yi Fasheng collet.It, should be as far as possible for such hollow profile Disposable tension straingtening is completed, and if having skidded, breaking end in operation, is then needed to cut off again, is carried out tension straingtening after back-end crop again, Geometry waste material will be significantly increased, reduce yield rate.

For super large-scale hollow profile, often sectional dimension is big for required cushion block or plug, and weight is big, and manpower transport is tired Difficulty, Assembly stability is poor, causes the efficiency of loading and unloading low, seriously affects production time beat, causes hollow profile timely because cannot get Tension straingtening and quenched residual stress occur cannot be effectively eliminated, appearance defect, which mustn't go to, to be effectively corrected.Therefore, designer Member should make to stretch cushion block or plug lightweight as far as possible.

Solid flat bar or pole can be used upper and lower nipper directly to clamp, and not need auxiliary cushion block or plug to improve clamping When hollow profile blank section on uniform force, can be obtained preferable leveling effect.And shaped hollow section, hollow type If material etc. directly clamps, it will cause retained part and occur rupturing and breaking end, cause to be unable to normal stretch；Or it will cause on section Unbalance stress, can not achieve every straightening function above-mentioned or purpose, or even deteriorate the outer dimension or sectional dimension of blank.

For the hollow profile of rectangular opening that is fluted and occupying section major part space, as previously mentioned, cannot The mode for taking upper and lower nipper directly to clamp carries out tension straingtening.Generally, by groove place with its size completely or Substantially matched full-scale cushion block, rectangular opening be put into its size wholly or substantially matched full-scale plug so that hollow For profile workblank part under the clamping of nipper, upper beam and lower beam can have bigger binding face with cushion block and plug, increase stress Area.Cushion block and the material and its intensity of plug, the height of cushion block and plug, the selection of width are very crucial, often because of design It is improper that Article Tensile is caused to scrap.For this example hollow profile, common clamp method is: upper beam is placed in level, Upwards, the flank of tooth of nippers is bonded with upper beam；Add aluminium cushion block, the flank of tooth and aluminium cushion block of nipper plate in the groove of hollow profile The rectangular opening of fitting, hollow profile blank fills plug.Its problem is that the contact area of upper beam, lower beam and nipper is small, Its frictional force is not enough to drawing force required for supporting entire hollow profile blank, and when stretching easily has skidded or easily breaks end.

Secondly, the rectangular opening sectional area of this hollow profile is big, using single plug, weight be not suitable for manual handling or Frequently carry.When such as using gantry crane mechanical device handling assembly manipulation, it will the stability, accurate of assembly is greatly lowered Property and production efficiency.

In conclusion how to promote the straightness after hollow profile tension straingtening, the shapes such as degree, curvature are twisted to reduce to turn round Defect, and quenched residual stress is eliminated to greatest extent, labor intensity of operating staff is reduced, improving hollow profile comprehensive performance is mesh Preceding those skilled in the art technical problem urgently to be resolved.

Apply for content

The purpose of the application is to provide a kind of plug, which improves section stress of the hollow profile when being clamped by nipper Situation, making hollow profile, each position stress more evenly, reduces or eliminates bending caused by quenching as far as possible, turns round during stretching It twists and waits appearance defects, and hollow profile is enable to obtain bigger extensibility range of choice to effectively eliminate quenched residual stress and control Hollow profile sectional dimension precision processed, while realizing lightweight.It includes above-mentioned plug that the another object of the application, which is to provide a kind of, The big specification hollow profile tension straingtening equipment of aviation.

To achieve the above object, the application provides the following technical solutions:

A kind of plug, including at least two plug monomers, each plug monomer include big head section and small head section, institute Big head section is stated equipped with boss so as to form seam allowance between the big head section and the small head section, the end of the small head section is along it The two sides of short transverse are inclined-plane, and the height of the small head section is consistent with the rectangular opening of hollow profile height, the major part The height of section is greater than the rectangular opening height of the hollow profile.

Preferably, the number of the plug monomer is two, and the size of each plug monomer is identical, and width is respectively less than The half of the rectangle hole width, each plug monomer are arranged successively along the rectangular opening width direction of the hollow profile.

Preferably, the height of the small head section is 0.5-2mm smaller than the rectangular opening of hollow profile height, the big head section Height than the rectangular opening height greatly at least 5mm of the hollow profile, also, the height of the big head section is than the hollow profile Rectangular opening height and the small at least 5mm of the sum of left-hand stringer thickness and right-hand stringer thickness three.

Preferably, the plug monomer is aluminium alloy plug monomer.

The application also provides a kind of aviation big specification hollow profile tension straingtening equipment, including described in above-mentioned any one Plug.

Preferably, further include the upper tooth plate and lower tooth plate for being located at the hollow profile upper and lower, the upper tooth plate and The opposite side of the lower tooth Board position is all provided with teeth, the right-hand stringer appearance of the upper compressible hollow profile of tooth plate Face, the left-hand stringer outer surface of the compressible hollow profile of lower tooth plate.

Preferably, the tooth form of the upper tooth plate and the lower tooth plate is triangle or trapezoidal.

Preferably, the tooth of the upper tooth plate and the lower tooth plate is the tooth being milled into.

Preferably, the upper tooth plate and the lower tooth plate are steel tooth plate.

It preferably, further include that relatively directly the preceding stretching head of the hollow profile and post-tensioning stretch head, positioned at described for stretching Upper aluminium cushion block and nippers on the outside of tooth plate and lower aluminium cushion block and nipper plate on the outside of the lower tooth plate.

Plug provided herein, including at least two plug monomers, each plug monomer includes big head section With small head section, the big head section is equipped with boss so as to form seam allowance, the microcephaly between the big head section and the small head section The end of section is inclined-plane along the two sides of its short transverse, the height and the rectangular opening height phase of hollow profile of the small head section Symbol, the height of the big head section are greater than the rectangular opening height of the hollow profile.The plug has carried out light-weight design, by plug It is set as at least two pieces, alleviates the weight of single-piece plug, is conducive to manually assemble and disassemble convenience when unloading, improves production efficiency, The labor intensity for reducing operator, eliminates safe hidden trouble.

The big specification hollow profile tension straingtening equipment of aviation provided herein, including above-mentioned plug, further include point Not Wei Yu the hollow profile upper and lower upper tooth plate and lower tooth plate, the upper tooth plate and the lower tooth Board position it is opposite one Side is all provided with teeth, the right-hand stringer outer surface of the upper compressible hollow profile of tooth plate, and the lower tooth plate is compressible described The left-hand stringer outer surface of hollow profile.The tension straingtening equipment solves hollow profile and stretches the technical problem skidded, and avoids Hollow profile blank is stretched into appearance and the problems such as breaks end, and is effectively improved section stress shape of the hollow profile when being clamped by nipper Condition, making hollow profile, each position stress more evenly, reduces or eliminates bending caused by quenching as far as possible, turns round and twist during stretching Equal appearance defects, and hollow profile is enable to obtain bigger extensibility range of choice to effectively eliminate quenched residual stress and control Hollow profile sectional dimension precision.

Detailed description of the invention

In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.

Fig. 1 is a kind of cross-sectional view of specific embodiment of hollow profile provided herein；

Fig. 2 is the cross-sectional view of hollow profile provided herein in clamp position；

Fig. 3 is the Longitudinal cross section schematic of hollow profile provided herein in clamp position；

Fig. 4 is a kind of structural schematic diagram of specific embodiment of tension straingtening equipment provided herein；

Fig. 5 is the unilateral enlarged structure schematic diagram of tension straingtening equipment shown in Fig. 4；

Wherein: hollow profile 1, upper beam 11, lower beam 12, left-hand stringer 13, right-hand stringer 14, left boss 15, the right side are convex Platform 16, groove 17, rectangular opening 18；Plug monomer 2, big head section 21, small head section 22, inclined-plane 23, seam allowance 24；Tension straingtening equipment 3, Upper tooth plate 31, lower tooth plate 32, upper aluminium cushion block 33, lower aluminium cushion block 34, nippers 35, nipper plate 36, preceding stretching head 37, post-tensioning extension head 38。

Specific embodiment

The core of the application is to provide a kind of plug, which improves section stress of the hollow profile when being clamped by nipper Situation, making hollow profile, each position stress more evenly, reduces or eliminates bending caused by quenching as far as possible, turns round during stretching It twists and waits appearance defects, and hollow profile is enable to obtain bigger extensibility range of choice to effectively eliminate quenched residual stress and control Hollow profile sectional dimension precision processed, while realizing lightweight.It includes above-mentioned plug that another core of the application, which is to provide a kind of, The big specification hollow profile tension straingtening equipment of aviation.

Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall in the protection scope of this application.

Fig. 1 to Fig. 5 is please referred to, Fig. 2 is the cross-sectional view of hollow profile provided herein in clamp position； Fig. 3 is the Longitudinal cross section schematic of hollow profile provided herein in clamp position；Fig. 4 is stretching provided herein A kind of structural schematic diagram of specific embodiment of straightening equipment；Fig. 5 is that the unilateral enlarged structure of tension straingtening equipment shown in Fig. 4 is shown It is intended to.

In this embodiment, plug is used to use when the aviation tension straingtening of big specification hollow profile 1, specifically, 1 blank of hollow profile is by 10000 tons and the above heavy type extruder extrusion molding, this example is by 12500 tons of extruder extrusion moldings. 1 alloy of hollow profile is 2D70, and after quenching, timeliness, final heat treatment state is T6511.The application meaning, which stretches, to be rectified Straight operation carries out after quenching, before timeliness, and the equipment of tension straingtening operation is seven-roll Abramsen machine.

Specifically, being provided with upper beam 11, lower beam 12, left-hand stringer 13, right-hand stringer on the section of hollow profile 1 14, left boss 15, right boss 16.Rectangular opening 18, hole are formed between upper beam 11, lower beam 12, left-hand stringer 13, right-hand stringer 14 Width 243mm, height 92mm；Rectangular recess 17 is formed between lower beam 12, left boss 15, right boss 16；Left boss 15, the right side are convex Distance between 16 medial plane of platform is greater than the distance between left-hand stringer 13,14 medial plane of right-hand stringer.The sky of present application example Cardioid material 1 is blank in procedures, that is, being 1 blank of hollow profile in tension straingtening.

What needs to be explained here is that the upper beam 11 and lower beam 12 of hollow profile 1 are located at a left side in tension straingtening Side and right side, left-hand stringer 13 and right-hand stringer 14 are located at following above and, also, hollow profile 1 referred to herein Length direction or longitudinal extending direction for referring to hollow profile 1, i.e. the draw direction of hollow profile 1, the width of hollow profile 1 Direction is identical as the width direction of side girder, the short transverse of hollow profile 1, refers to the clamping direction of hollow profile 1, i.e., vertically In the direction of the extension plane of side girder.

The plug includes at least two plug monomers 2, and each plug monomer 2 is including big head section 21 and small head section 22, greatly Head section 21 is equipped with boss so as to form seam allowance 24 between big head section 21 and small head section 22, the end of small head section 22 is along its height side To two sides be inclined-plane 23, the height of small head section 22 is consistent with 18 height of rectangular opening of hollow profile 1, be convenient for small head section 22 It is inserted into the rectangular opening 18 of hollow profile 1, the height of big head section 21 is greater than 18 height of rectangular opening of hollow profile 1, so as to seam allowance 24 are clamped with the end of hollow profile 1.Specifically, the end of the upper and lower surfaces of small head section 22 is provided with inclined-plane 23, purpose It is guiding when being packed into the rectangular opening 18 of hollow profile 1 for plug, makes it easier for being packed into.

The plug has carried out light-weight design, sets at least two pieces for plug, alleviates the weight of single-piece plug, favorably Convenience when artificial assembly and disassembly are unloaded, improves production efficiency, reduces the labor intensity of operator, eliminate safe hidden trouble.

On the basis of the respective embodiments described above, the number of plug monomer 2 is two, and the size of each plug monomer 2 is identical, And width is respectively less than the half of 18 width of rectangular opening, each plug monomer 2 is successively arranged along 18 width direction of rectangular opening of hollow profile 1 Column.

Specifically, the width W of big head section 21 and small head section 22 is of same size.Each rectangular opening 18 loads two plug sheets Body, the width of plug ontology are not more than the half of 18 width of rectangular opening, and similarly, each rectangular opening 18 loads three plugs When ontology, the width of plug ontology is not more than the one third of 18 width of rectangular opening.

On the basis of the respective embodiments described above, the height of small head section 22 is smaller than 18 height of rectangular opening of hollow profile 1 The height of 0.5-2mm, big head section 21 are at least 5mm bigger than 18 height of rectangular opening of hollow profile 1, also, the height of big head section 21 Than 18 height of rectangular opening and the small at least 5mm of the sum of 13 thickness of left-hand stringer and 14 thickness three of right-hand stringer of hollow profile 1.

Specifically, small head section 22 is used to fill the rectangular opening 18 of hollow profile 1, therefore, thickness H1 and hollow type The matched of 1 rectangular opening 18 of material, height are less than the height of 1 rectangular opening 18 of hollow profile, it is preferable that the two size difference 0.5- 2mm；The length L1 of small head section 22 is optional, preferably 350-450mm.The length on the inclined-plane 23 of small head section 22 is optional, preferably 30- 50mm。

Further, the height of big head section 21 is greater than the height of small head section 22, is formed and is stopped in upper and lower two sides with small head section 22 Mouthfuls 24, the effect of the seam allowance 24 is to prevent from making plug be excessively inserting profile workblank rectangular opening 18 because of improper operation, cause plug without Method is taken out.In operation, after the side girder of profile workblank touches seam allowance 24, prevent plug from more protruding into profile rectangle In hole 18.When taking out plug, the top and bottom by clamping big head section 21 pull plug outward, can extract plug.

Further, the height of big head section 21 is optional, and size is less than 18 height of rectangular opening and 13 thickness of left-hand stringer, the right side The sum of 14 thickness three of side girder, it is preferable that its difference is not less than 5mm；Meanwhile the height of big head section 21 should be greater than profile rectangle The height in hole 18, it is preferable that the two difference is not less than 5mm.It is particularly preferred that the height of the big head section 21 of this example is 105- 115mm.The length of big head section 21 is optional, it is preferable that selection 80-150mm.

On the basis of the respective embodiments described above, plug monomer 2 is aluminium alloy plug monomer 2, and intensity is high, support effect It is good.

Other than above-mentioned plug, present invention also provides a kind of big specification hollow profiles of aviation including above-mentioned plug Tension straingtening equipment.The drawing force of tension straingtening equipment 3 needed for present application example is not less than 800 tons, it is therefore preferable to 1200-1500 Ton.

It further include the upper tooth plate 31 and lower tooth plate 32 for being located at 1 upper and lower of hollow profile, upper tooth plate 31 and lower tooth plate 32 The opposite side in position is all provided with teeth, and 14 outer surface of right-hand stringer of the compressible hollow profile 1 of upper tooth plate 31, lower tooth plate 32 can press 13 outer surface of left-hand stringer of tight hollow profile 1.

The tension straingtening equipment 3 especially uses the assembled scheme of plug, tooth plate, aluminium cushion block, wherein upper tooth plate, lower tooth plate Two face, that is, clamping faces in the height direction have milling tooth, solve hollow profile 1 and stretch the technical problem skidded, avoid 1 blank of hollow profile is stretched into appearance and the problems such as breaks end, and is effectively improved section stress of the hollow profile 1 when being clamped by nipper Situation, make hollow profile 1 during stretching each position stress more evenly, reduce or eliminate as far as possible quenching caused by bending, Twist equal appearance defects are turned round, and hollow profile 1 is enable to obtain bigger extensibility range of choice to effectively eliminate quenched residual stress With control 1 sectional dimension precision of hollow profile.

It further include being located at the upper tooth plate 31 of 1 upper and lower of hollow profile under on the basis of the respective embodiments described above Tooth plate 32, upper tooth plate 31 side opposite with 32 position of lower tooth plate are all provided with teeth, the right side of the compressible hollow profile 1 of upper tooth plate 31 14 outer surface of stringer, 13 outer surface of left-hand stringer of the compressible hollow profile 1 of lower tooth plate 32.

On the basis of the respective embodiments described above, the tooth form of upper tooth plate 31 and lower tooth plate 32 is triangle or trapezoidal.Specifically , the tooth form that nippers 35 and nipper plate 36 lean on the surface of profile workblank side to have milling is triangle or trapezoidal tooth, to increase Big frictional force.The tooth tip of these teeth can be pressed into clamping aluminum profile hair it is bad/surface of aluminium cushion block, the depth of indentation regards clamping Power, aluminum profile blank/aluminium cushion block intensity are different and different.

On the basis of the respective embodiments described above, the tooth of upper tooth plate 31 and lower tooth plate 32 is the tooth being milled into.

On the basis of the respective embodiments described above, upper tooth plate 31 and lower tooth plate 32 are steel tooth plate, that is, process upper tooth plate 31, the material of lower tooth plate 32 is steel, and shape is rectangle, and the two is preferably same pieces.

It further include for stretching the preceding stretching head 37 of more straight hollow profile 1 with after on the basis of the respective embodiments described above Stretching head 38, the upper aluminium cushion block 33 positioned at upper 31 outside of tooth plate and nippers 35 and the lower aluminium cushion block positioned at 32 outside of lower tooth plate 34 and nipper plate 36.

Specifically, upper tooth plate 31 and lower tooth plate 32 are the critical component that can this example carry out effective tension straingtening, it is: It is triangle or trapezoidal tooth, the flank of tooth that upper tooth plate 31 and lower tooth plate 32, which have the tooth form of milling in the upper and lower surfaces of thickness direction, One side be bonded with side girder, another side is bonded with upper aluminium cushion block 33 or lower aluminium cushion block 34.After clamping, the tooth tip quilt of these teeth It is pressed into side girder and upper aluminium cushion block 33 or lower 34 surface of aluminium cushion block, significantly increases the frictional force of contact surface.

Further, width and upper beam 11 thickness of the width of upper tooth plate 31 or lower tooth plate 32 not less than profile rectangular opening 18 The sum of, it is preferable that the width of upper tooth plate 31 or lower tooth plate 32 selects 260-300mm.Further, upper tooth plate 31 and lower tooth plate 32 Width height it is optional, it will be appreciated that ground, height are sufficiently high, to guarantee upper aluminium cushion block 33 or lower aluminium cushion block 34 not contact-type The boss of material；In addition, thickness is excessive, the weight of tooth plate will increase, manpower is not easy to carry；Thickness is too small, the easily broken rhegma base of tooth plate. It is particularly preferred that present application example, upper tooth plate 31, the highly preferred of lower tooth plate 32 are 50mm.Meanwhile upper tooth plate 31, lower tooth plate 32 length is optional, it is preferable that is selected as 200-300mm.

Specifically, upper aluminium cushion block 33 or lower 34 dimensions of aluminium cushion block are optional, it is preferable that width is upper greater than being bonded with it The width of tooth plate 31 or lower tooth plate 32, length are greater than the length of the upper tooth plate 31 or lower tooth plate 32 that are bonded with it；Upper aluminium cushion block 33, Lower 34 size material of aluminium cushion block is high-strength aluminum alloy, 2000 preferably thermally treated line aluminium alloys, intensity 400-500MPa.

This example super large-scale profile needs to carry out tension straingtening with 800 tons and the above seven-roll Abramsen machine.Seven-roll Abramsen machine Stretching head 37, post-tensioning extension head 38 before being provided on along longitudinal direction, preceding stretching head 37, the distance of post-tensioning extension head 38 are adjustable, with matching The length of profile, before capable of being neatly placed in order to profile between stretching head 37, post-tensioning extension head 38；Each stretching head is respectively provided with There are moveable nippers 35 and nipper plate 36, form grasping part between nippers 35, nipper plate 36, the height in the space can be with It adjusts in a certain range, with the height after adapting to profile or profile in conjunction with cushion block or plug, it is ensured that upper and lower nipper 36 is to rear The clamping of person；When stretching, one end stretching head is relatively fixed, and other end relative movement, when stretching, profile workblank is placed in two stretching heads Between, one end of profile workblank is clamped by the nippers 35 of preceding stretching head 37 and nipper plate 36, and the other end is pulled extension head 38 Nippers 35 and nipper plate 36 clamp, and as moveable stretching head persistently moves, the distance between two stretching heads is gradually increased, phase Ying Di, profile workblank are elongated, to realize every straightening function above-mentioned and purpose.

Realize the stretching tool of present application example further include: plug, lower aluminium cushion block 34, lower tooth plate 32, upper tooth plate 31, upper aluminium Cushion block 33.The profile tension straingtening method of present application example is:

Preceding stretching head 37 or the post-tensioning extension head 38 of mobile stretching-machine, both make apart from long enough；By 1 blank of hollow profile It is put between two stretching heads along longitudinal direction；From one end of 1 blank of hollow profile, the small head end of plug is inserted into 1 blank of hollow profile Rectangular opening 18, until the end face of 1 blank of hollow profile touches the seam allowance 24 of plug, the rectangular opening 18 at every end is inserted into two altogether Or three plug ontologies, this example are two plug ontologies, plug ontology is equably arranged in square on the width of rectangular opening 18 In shape hole 18；Similarly, the other end of profile workblank is also loaded onto plug；Adjust the distance between the upper and lower nipper 36 of stretching head；

It is performed the following operation respectively in forward and backward stretching head 38:

Lower aluminium cushion block 34 is placed on the flank of tooth of nipper plate 36, lower tooth plate 32 is placed on lower aluminium cushion block 34；

The end for 1 blank of hollow profile for having been charged into plug is placed between nippers 35 and nipper plate 36, profile is kept Side girder it is horizontal, the end portion of hollow profile 1 is placed on lower tooth plate 32, it is ensured that lower tooth plate 32 and left-hand stringer 13 are pasted It closes；Similarly, in turn, upper tooth plate 31, upper aluminium cushion block are placed in the cross cut end (of a beam) of the right-hand stringer 14 by 35 side of nippers 33；

Equipment is operated, reduces the spacing between nippers 35 and nipper plate 36, makes nippers 35 and nipper plate 36 to hollow 1 blank end of profile and combinations thereof part keeps clamp position；

After completing the above operation, start stretched operation, 1 blank of hollow profile is stretched, when drawing force is sufficiently large, makes 1 blank of hollow profile produces non-response plastic deformation, and the bending of 1 blank of hollow profile is turned round and the appearance defects such as twists and be able to It reduces or eliminates, quenched residual stress is reduced or eliminated simultaneously, and the sectional dimension of profile is able to adjust to meet technical bid Quasi- requirement.

Drawing process control parameter-extensibility size eliminates appearance defect above-mentioned and quenched residual stress very heavy It wants, the extensibility of present application example is optional, preferably 2.0-2.5%.

Tension straingtening equipment and plug, have the advantages that provided by the present embodiment

1) the vertical method of clamping that the common mode for stretching profile, i.e. upper beam 11 are bonded with nippers 35, is improved to Side girder and the method for clamping of 36 plane of nippers 35 or nipper plate reduce breakage phenomena to increase holding area.

2) filling cushion block at the step between side girder and boss is replaced with by common aluminium cushion block two-sided has milling tooth Steel tooth plate considerably increases the frictional force with profile workblank surface, and the skidding solved between aluminium cushion block and aluminum profile blank is difficult Topic.

3) plug for filling rectangular opening 18 is improved to seperated part by single piece, is effectively reduced the weight of plug.In addition, core Stick is also provided with the structure of anti-excessive insertion.

4) plug, tooth plate size design sufficiently meet profile tension straingtening to the needs of dimensional fits.

5) by using the mode of operation of the application, disposably the profile workblank to the application can effectively stretch and rectify Directly.

Refer to the prior art for other Each parts of the big specification hollow profile tension straingtening equipment 3 of the aviation, this Text repeats no more.

Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.

Plug provided herein is described in detail above.Specific case used herein is to the application's Principle and embodiment is expounded, the present processes that the above embodiments are only used to help understand and its core Thought.It should be pointed out that for those skilled in the art, under the premise of not departing from the application principle, also Can to the application, some improvement and modification can also be carried out, these improvement and modification also fall into the protection scope of the claim of this application It is interior.

Claims (10)

1. a kind of plug, which is characterized in that including at least two plug monomers (2), each plug monomer (2) includes big Head section (21) and small head section (22), the big head section (21) are equipped with boss so that the big head section (21) and the small head section (22) seam allowance (24) are formed between, the end of the small head section (22) is inclined-plane (23), institute along the two sides of its short transverse The height for stating small head section (22) is highly consistent with the rectangular opening (18) of hollow profile (1), and the height of the big head section (21) is greater than Rectangular opening (18) height of the hollow profile (1).

2. plug according to claim 1, which is characterized in that the number of the plug monomer (2) is two, each core The size of stick monomer (2) is identical, and width is respectively less than the half of the rectangular opening (18) width, each plug monomer (2) edge Rectangular opening (18) width direction of the hollow profile (1) is arranged successively.

3. plug according to claim 1, which is characterized in that the height of the small head section (22) is than the hollow profile (1) rectangular opening (18) the small 0.5-2mm of height, the rectangular opening of the height of the big head section (21) than the hollow profile (1) (18) the big at least 5mm of height, also, the height of the big head section (21) is than rectangular opening (18) height of the hollow profile (1) With the small at least 5mm of the sum of left-hand stringer (13) thickness and right-hand stringer (14) thickness three.

4. plug according to claim 1, which is characterized in that the plug monomer (2) is aluminium alloy plug monomer (2).

5. a kind of aviation big specification hollow profile tension straingtening equipment, including plug, which is characterized in that the plug is right It is required that plug described in 1 to 4 any one.

6. the big specification hollow profile tension straingtening equipment of aviation according to claim 5, which is characterized in that further include point Not Wei Yu hollow profile (1) upper and lower upper tooth plate (31) and lower tooth plate (32), the upper tooth plate (31) and the lower tooth The opposite side in plate (32) position is all provided with teeth, the right-hand stringer of the upper compressible hollow profile (1) of tooth plate (31) (14) outer surface, left-hand stringer (13) outer surface of the compressible hollow profile (1) of lower tooth plate (32).

7. the big specification hollow profile tension straingtening equipment of aviation according to claim 6, which is characterized in that the upper tooth The tooth form of plate (31) and the lower tooth plate (32) is triangle or trapezoidal.

8. the big specification hollow profile tension straingtening equipment of aviation according to claim 6, which is characterized in that the upper tooth The tooth of plate (31) and the lower tooth plate (32) is the tooth being milled into.

9. the big specification hollow profile tension straingtening equipment of aviation according to claim 6, which is characterized in that the upper tooth Plate (31) and the lower tooth plate (32) are steel tooth plate.

10. according to aviation described in claim 6 to 9 any one big specification hollow profile tension straingtening equipment, feature It is, further includes that relatively directly the preceding stretching head (37) and post-tensioning of the hollow profile (1) stretch head (38), positioned at described for stretching Upper aluminium cushion block (33) and nippers (35) on the outside of tooth plate (31) and the lower aluminium cushion block on the outside of the lower tooth plate (32) (34) and nipper plate (36).