CN110524190A - A kind of production method being bent square tube - Google Patents
A kind of production method being bent square tube Download PDFInfo
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- CN110524190A CN110524190A CN201910639709.9A CN201910639709A CN110524190A CN 110524190 A CN110524190 A CN 110524190A CN 201910639709 A CN201910639709 A CN 201910639709A CN 110524190 A CN110524190 A CN 110524190A
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- square tube
- siding
- bending
- bottom wall
- support jig
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The present invention provides a kind of production methods for being bent square tube comprising following steps: the threedimensional model of bending square tube is completed by Three-dimensional Design Software；Support jig corresponding with its bottom wall curved shape is designed in the bottom of the threedimensional model of bending square tube, and determines the dimensional structure for making the support jig；The setting-out expanded view of each siding of the threedimensional model of bending square tube is obtained, and cutting stock is carried out respectively to each siding；Each siding obtained after blanking is carried out to assembly on support jig, to obtain bending square tube.The production method can be avoided in heating in medium frequency bending method tension sidewall sheet thickness when bending it is thinning due to weaken the rigidity of this body structure of square tube, and machining stress will not be generated in process, and can reduce processing cost, improve production efficiency and economic benefit.
Description
Technical field
The present invention relates to pipe manufacturing technology field more particularly to a kind of production methods for being bent square tube.
Background technique
It is full in addition to needing emphasis to consider in the architectural appearances shape-designing such as modern grand theater, gymnasium, bridge steel structure
The stress of sufficient structure itself, rigidity, outside stability requirement, it is also necessary in conjunction with moulding itself is designed, to reach beautiful requirement
Or realize corresponding shape implied meaning.And in the steel construction of surface modeling, it usually needs selecting has the curved of rectangular section
Qu Fangguan, and applied in actual girder steel, steel column structure.Conventional, for the bending square tube with rectangular section
Production method be usually to steel mill roll forming square tube use dedicated induction heating equipment of medium frequency and shaping dies, dedicated
Cooperate processing tool by square tube bending forming on mechanical equipment, this method exists more in the more square tube of processing quantity
Aspect limitation:
1, it has been fabricated to the square tube of rectangular section, cross sectional moment of inertia, composite bending modulus are much larger than the list for forming square tube
The moment of inertia of part siding, composite bending modulus, section composite bending modulus is bigger, and the bending machinery external force for needing equipment to provide is bigger, thus
The range of limiting device processing cross-sectional sizes；
2, it is processed using this method, square tube has processing drawing zone, compressional zone, and curvature is bigger, stretch zones Tensile
Length it is bigger, the compressed decrement of constricted zone is also big, and stretch zones, which will appear steel plate thickness and structural rigidity, to be weakened, pressure
Contracting region is easy to appear due to compression corrugation or arch camber；
3, the moment of inertia after machine-shaping compared to design requirement section can weaken, and not allow in important force structure；
4, Curvature varying multiplicity, it is desirable that molding die is also various, adjusts equipment, mold repeatedly, and efficiency is not high instead, reduces
Economic benefit.
Summary of the invention
Based on above-mentioned the deficiencies in the prior art, the purpose of the present invention is to provide a kind of production method for being bent square tube,
This method can be avoided the rigidity for weakening this body structure of square tube, and machining stress will not be generated in hot procedure, and energy
Processing cost is enough reduced, production efficiency and economic benefit are improved.
Based on this, the technical solution of the present invention is as follows: a kind of production method for being bent square tube comprising following steps:
The threedimensional model of bending square tube is completed by Three-dimensional Design Software；
Support jig corresponding with its bottom wall curved shape is designed in the bottom of the threedimensional model of bending square tube, and
Determine the dimensional structure for making the support jig；
The setting-out expanded view of each siding of the threedimensional model of bending square tube is obtained, and each siding is cut down respectively
Material；
Each siding obtained after blanking is carried out to assembly on support jig, to obtain bending square tube.
Optionally, the step of dimensional structure of the determining support jig specifically includes:
Several places are selected according to certain interval to the bending square tube being arranged on support jig in Three-dimensional Design Software
Section, and using the interval between each section as the spacing dimension of the column of the support jig；
The two sides of the bottom wall of the bending square tube on each section height apart from ground respectively is obtained, as the branch
The height dimension of two heel posts of support frame, and determine the gradient in moulding bed face.
Optionally, each siding that will be obtained after blanking carries out assembly on support jig, to obtain bending square tube
Step specifically includes:
The placing direction of bending square tube is determined by Three-dimensional Design Software, and obtains the selected of the bottom wall for being bent square tube
Coordinate value at position, to be marked on support jig；
The good bottom wall of blanking is subjected to location and installation according to label, to ensure the bottom wall in width and thickness two
Bending degree on a bending direction；
The good two side wall panels of blanking are assembled in the bottom wall respectively, repositioning installation top siding, with
Form bending square tube.
Optionally, after described the step of being bent the threedimensional model of square tube by Three-dimensional Design Software completion, further includes:
Several pieces of rectangle technique partitions being arranged at distances from one another are designed in the threedimensional model of bending square tube, the rectangle technique partition hangs down
Directly in the side of each siding.
Optionally, described respectively to assemble the good two side wall panels of blanking in the bottom wall, repositioning installation
Top siding is specifically included with forming the step of being bent square tube:
According to the size of the rectangle technique partition in Three-dimensional Design Software, the blanking for carrying out the rectangle technique partition is quasi-
It is standby；
The good rectangle technique partition of blanking is mounted in the bottom wall according to the interval vertical in threedimensional model；
The siding of two sides is assembled, so that the siding of the two sides is respectively perpendicular to the sideline arrangement of the bottom wall, and
The sideline bending direction of the siding of the two sides and the sideline flush of the bottom wall；
The plate face fixation of the siding of the two sides is attached on the side of the rectangle technique partition；
Siding and welding fabrication at the top of the top of panels assembling of the two sides.
Optionally, the bottom wall of bending square tube, the siding of two sides and top siding are carried out on the support jig
Before assembling further include:
In blanking process, bottom wall, the siding of two sides and top siding are needed in assembly positioned at the same side
End is labeled, to determine the bending direction of bending square tube.
Optionally, the placing direction that bending square tube is determined by Three-dimensional Design Software, and obtain the bottom of bending square tube
Coordinate value at the selected location of portion's siding, to be marked on support jig the step of, specifically include:
By the head and the tail both ends of the bottom wall of selection bending square tube in Three-dimensional Design Software as datum mark, and will head and the tail
Line between datum mark is as reference line；
Obtain height of the reference line described in each section apart from ground；
Obtain the two sides of the bottom wall on each section distance apart from the reference line respectively；
The position of the two sides of the bottom wall is identified at each sectional position on the moulding bed face.
Optionally, each siding that will be obtained after blanking carries out assembly on support jig, to obtain bending square tube
After step, further includes:
Compact dimensions measurement and inspection are carried out in the molding bending square tube of the support jig over-assemble.
Optionally, described to the step for carrying out compact dimensions measurement and inspection in the molding bending square tube of support jig over-assemble
Suddenly it specifically includes:
Obtain reference line described in the distance from top of the siding of the two sides for the bending square tube completed in support jig over-assemble
Vertical height, and the top siding and bottom wall of bending square tube are located at the relative distance between the both ends of the same side；
The vertical height and relative distance that will acquire are compared with the design requirement size in Three-dimensional Design Software respectively,
It completes to weld if reaching design requirement.
Optionally, blanking obtain siding thickness δ and cross-sectional shape size B ratio less than 0.05, wherein δ≤
14mm.The implementation of the embodiments of the present invention has the following beneficial effects:
The production method of bending square tube of the invention first passes through Three-dimensional Design Software and obtains bending square tube three-dimensional after molding
Model, and four pieces of sidings for being bent square tube are accurately unfolded according to outer dimension, to four pieces of sidings in Three-dimensional Design Software
It lofting Design is carried out, then completes by way of Numerical control cutting the cutting stock of four pieces of sidings, each siding is in the direction of the width
Composite bending modulus is the strong axis direction of siding, and crooked radian designs setting-out expansion, straight forming is cut in blanking, does not need mechanical equipment
Process brake forming.It is carried out according to the dimensional structure that the cooperation for being bent square tube and support jig in threedimensional model obtains support jig
Production, then four pieces of good sidings of blanking are carried out on the support jig made to assembly respectively, by the rigidity and letter of moulding bed
Easy assembly tooling can make four pieces of siding bendings in place, and the composite bending modulus of siding in a thickness direction is the weak axis of siding
Direction, in the case where the thickness of each siding is much smaller than length, and each siding is individually arranged, each other and not formed rigidity is solid
In the case where fixed, deformation of the siding on bracket moulding bed is very easy to.It is carried out using each siding of the support jig to bending square tube
The process for positioning assembly is very convenient, and quality is higher, can be conducive to the quality testing for carrying out the later period.Entire bending square tube
Production method can complete the production, production process is non-compared to common process without cold-bending processing equipment, extreme misery bending
Often simple, used device, assistant formation tooling are greatly reduced, and can either reduce production cost, be also convenient for using extensive
Production and processing in, be conducive to improve processing efficiency, increase economic benefit.
Detailed description of the invention
Fig. 1 is the flow diagram of the production method of bending square tube described in the embodiment of the present invention；
Fig. 2 is the elevation of bending square tube described in the embodiment of the present invention；
Fig. 3 is the sectional structure signal in Fig. 2 at A1-A1；
Fig. 4 is the sectional structure signal in Fig. 2 at A2-A2；
Fig. 5 is the sectional structure signal in Fig. 2 at A3-A3；
Fig. 6 is the sectional structure signal in Fig. 2 at A4-A4；
Fig. 7 is the sectional structure signal in Fig. 2 at A5-A5；
Fig. 8 is the sectional structure signal in Fig. 2 at A6-A6.
Description of symbols:
1, top siding, 2, the siding of side, 3, bottom wall, 4, rectangle technique partition, 5, datum mark, 6, reference line,
7, support jig, 71, column, 72, moulding bed face.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, the orientation or position of the instructions such as term " on ", "lower", "left", "right"
Setting relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is interpreted as limitation of the present invention.
Referring to Fig. 1 to Fig. 8, the production method of bending square tube described in the preferred embodiment of the present invention specifically includes following step
It is rapid:
S1, the threedimensional model that bending square tube is completed by Three-dimensional Design Software；
S2, branch support corresponding with its 3 curved shape of bottom wall is designed in the bottom of the threedimensional model of bending square tube
Frame 7, and determine the dimensional structure for making the support jig 7；
S3, the setting-out expanded view for being bent each siding of threedimensional model of square tube is obtained, and each siding is cut respectively
Blanking；
S4, each siding obtained after blanking is carried out to assembly, on support jig 7 to obtain bending square tube.
Based on above step, when being made to bending square tube, to required bending in present Three-dimensional Design Software
Square tube carries out the layout design of threedimensional model, then four pieces of sidings of designed threedimensional model are accurately opened up according to outer dimension
It opens, and setting-out processing (is the meaning for measuring setting in engineering survey, the position/object designed on drawing is put on the spot
Position/object), i.e., each siding of the bending square tube on drawing is molding state, by Three-dimensional Design Software obtain it is practical into
The outer dimension of required siding when row blanking, as long as so the bending of each siding in the direction of the width is by three dimensional design
What the expansion of software was completed, it can guarantee certain design accuracy, i.e., the bending of each siding in the direction of the width can be according to three
Setting-out expanded view in dimension design software directly obtains, and does not need other bending machining, is avoided that on each siding and stretches
Area and compressional zone, prevent steel plate thickness and structural rigidity weakens, compresses the phenomenon that corrugation or arch camber.Obtaining can be
After there are set curved four pieces of sidings in width direction, is obtained according to Three-dimensional Design Software and be located at bending square tube bottom in threedimensional model
The dimensional structure of the support jig 7 in portion, the support jig 7 as production form bending square tube important component, need to have compared with
High dimension precision requirement, each siding are positioned on the support jig 7 manufactured, can be obtained on thickness direction
Bending, the composite bending modulus of each siding in a thickness direction is smaller, and when positioning can be realized as siding by the rigidity of moulding bed and exist
Bending on thickness direction, operation is very simple, and principle is reliable.The composite bending modulus of each siding in the direction of the width is siding
Strong axis direction, crooked radian setting-out expansion, can directly blanking molding, do not need additional bending machining, and wall panel thickness side
Upward composite bending modulus is the weak axis direction of siding, is much smaller than its length due to siding, four pieces of sidings each other it
Between without formed rigidly fix in the case where, single siding is very easy to bend to when being positioned on support jig 7
Position.The manufacturing process of entire bending square tube does not need clod wash processing, extreme misery bending can be completed, and production process is simple, required
The tooling of the equipment and assistant formation to be put into is considerably less, low manufacture cost, high production efficiency, and can be improved economic effect
Rate is suitble to large-scale production and processing, can promote the use of.
Wherein it is determined that the step of dimensional structure of support jig 7, specifically includes:
If S21, being selected to the bending square tube being arranged on support jig 7 according to certain interval in Three-dimensional Design Software
The section Gan Chu, and using the interval between each section as the spacing dimension of the column 71 of the support jig 7；
S22, obtain bending square tube on each section bottom wall 3 the two sides height apart from ground respectively, as
The height dimension of two heel posts 71 of the support jig 7, and determine the gradient in moulding bed face 72.
Three-dimensional Design Software is computerized in molding threedimensional model according to certain multiple sections of interval acquiring, In
In the present embodiment, the length direction along bending square tube chooses section at six, this at six section can be it is equal in the longitudinal direction between
Every arrangement, it is also possible to randomly choose.The cooperation that bending square tube and support jig 7 on six positions are obtained according to each section is cut
Face figure, the bottom wall 3 for being bent square tube and the moulding bed face 72 of support jig 7 contact with each other, since bottom wall 3 is in blanking
There are the bendings in width direction, and in Three-dimensional Design Software, bottom wall 3 on support jig 7 when being positioned, to six
Height of the two sides of bottom wall 3 in a section respectively apart from ground measures, and obtaining six groups of data is respectively Q1And Q4、
R1And R4、S1And S4、T1And T4、U1And U4、W1And W4, so as to the support jig 7 as the two sides for being supported on bottom wall 3
Column 71 height, the height of two sides has a certain difference, so the moulding bed face of support jig 7 can further be obtained
Gradient on 72 obtains 71 height of column and tire of the corresponding position of six groups of support jigs 7 by Three-dimensional Design Software as a result,
The gradient in frame face 72, to obtain the corresponding size structure of support jig 7, carry out the actual manufacturing and determine on the ground
Position.
Optionally, each siding obtained after blanking is carried out to assembly on support jig 7, to obtain the step of being bent square tube
It specifically includes:
S41, the placing direction that bending square tube is determined by Three-dimensional Design Software, and obtain the bottom wall 3 of bending square tube
Selected location at coordinate value, to be marked on support jig 7；
S42, the good bottom wall 3 of blanking is subjected to location and installation according to label, with ensure the bottom wall 3 in width and
Bending degree on two bending directions of thickness；
S43, the good two side wall panels of blanking are assembled in the bottom wall 3 respectively, repositioning installation top wall
Plate 1, to form bending square tube.
Before carrying out assembly to bending square tube, it is also necessary to by computer using Three-dimensional Design Software the three of bending square tube
Several pieces of rectangle technique partitions 4 being arranged at distances from one another, side of the rectangle technique partition 4 perpendicular to each siding are designed in dimension module
Face, in the present embodiment, the quantity of rectangle technique partition 4 are six pieces, and the length along bending square tube is arranged.It is set according to three-dimensional
After the size of the rectangle technique plate of arrangement in meter software carries out blanking to each rectangle technique plate, being assembled into for bending square tube is carried out
The preparation of type work.Any one piece of siding of bending square tube is chosen in Three-dimensional Design Software as datum plate, and by base
The head and the tail both ends of quasi- plate will be bent square tube as datum mark 5, and using the line between two datum marks 5 of head and the tail as reference line 6
And special line rotate to be horizontal direction, so that it is determined that bending square tube placing direction, in the present embodiment, with bottom wall 3 work
For benchmark plate, the head and the tail two-end-point of bottom wall 3 is as datum mark 5.When bottom wall 3 is located in the moulding bed face of support jig 7
When on 72, in six sections of the bending square tube obtained by Three-dimensional Design Software, height of the reference line 6 apart from ground is determined
H1、H2、H3、H4、H5And H6, and obtain the two sides of bottom wall 3 in each section distance Q apart from reference line 6 respectively2And Q3、R2
And R3、S2And S3、T2And T3、U2And U3、W2And W3, so as to position of the accurate positioning of bottom siding 3 on support jig 7,
Corresponding to the support jig 7 made, position of the bottom wall 3 obtained in Three-dimensional Design Software on moulding bed face 72 is carried out
Label, then installs bottom wall 3 according to the mark position on support jig 7, then the bottom wall 3 that blanking obtains exists
When being positioned on the moulding bed face 72 of support jig 7, it can move towards to be bent accordingly according to branch support plate, without
Other bending machining, it will be able to which the bending positioning for directly obtaining bottom wall 3 guarantees that bottom wall 3 can be realized in width
Bending degree on direction and on thickness direction.After being installed on support jig 7 to bottom wall 3, according to three dimensional design
Drawing in software carries out positioning assembly to each technique partition, guarantees that each technique partition is mutually perpendicular to bottom wall 3, and be arranged
On the position of normal section.It is concordant to be adjusted bending direction by the siding 2 of the two sides of assembly bending square tube for the siding 2 of two sides
Benchmark siding sideline, and the vertical plate face of siding 2 of two sides is concordant with the edge of bottom wall 3, and adjusts fairing, by two sidewalls
The plate face of plate is close to the side of technique partition, to complete the positioning and bending to the siding 2 of two sides.Finally by top siding
1 is assembled in the top of the siding 2 of two sides, and edge keeps flush with each other, by bottom wall 3, rectangle technique partition 4, two sides
Siding 2 and top siding 1 carry out welding fabrication respectively, complete the production of bending square tube.
Further, during carrying out blanking to each siding, due to the design of Three-dimensional Design Software, each siding itself
There are the bendings in width direction, so need to need bottom wall 3, the siding 2 of two sides and top siding 1 in assembly
The end that be located at the same side is labeled, to determine the bending direction of bending square tube, without by measuring size progress
It distinguishes, the further efficiency for improving bending square tube assembly.Each siding obtained after blanking is spelled on support jig 7
Dress, after the step of acquisition bending square tube, further includes: formed in the molding bending square tube of 7 over-assemble of support jig
The step of dimensional measurement and inspection, detection process includes:
Obtain the vertical of the distance from top reference line 6 of the two side wall panels for the bending square tube completed in 7 over-assemble of support jig
Highly, and bending square tube top siding 1 and bottom wall 3 be located at the relative distance between the both ends of the same side；
The vertical height and relative distance that will acquire are compared with the design requirement size in Three-dimensional Design Software respectively,
It completes to weld if reaching design requirement.
After being installed on support jig 7 to bending square tube, the detecting size on support jig 7 can be carried out
It measures, after the siding 2 for installing two sides, since there are gradients for bottom wall 3, then two be installed vertically in bottom wall 3
There is also there is difference in height between the siding 2 of side, so that there are gradients for the two sides of top siding 1, divide in six sections
The vertical height of the distance from top reference line 6 of the other siding 2 to two sides measures, and obtains height value Q5And Q7、R5And R7、S5
And S7、T5And T7、U5And U7、W5And W7, then on top siding 1 and bottom wall 3 be located at the same side end between
Relative distance measures, and obtains relative distance value Q6、R6、S6、T6、U6、W6, these data and three dimensional design that will test are soft
Design requirement size in part compares, and completes to weld if the requirement for meeting design size, obtains bending square tube.In this reality
It applies in example, the siding that blanking obtains is steel plate, and the ratio of the thickness δ of each siding and cross-sectional shape size B is less than 0.05,
Middle δ≤14mm, and design bending radius of the bending square tube formed in short transverse, width direction is compared to bending square tube
Rectangular section size is greater than 10 times or more, convenient each thus on the basis of can guarantee to be bent the structural strength of square tube
Siding bends in an assembling process, guarantees the quality of bending square tube.
The production method of bending square tube of the invention first passes through Three-dimensional Design Software and obtains bending square tube three-dimensional after molding
Model, and four pieces of sidings for being bent square tube are accurately unfolded according to outer dimension, to four pieces of sidings in Three-dimensional Design Software
It lofting Design is carried out, then completes by way of Numerical control cutting the cutting stock of four pieces of sidings, each siding is in the direction of the width
Composite bending modulus is the strong axis direction of siding, and crooked radian designs setting-out expansion, straight forming is cut in blanking, does not need mechanical equipment
Process brake forming.According to the cooperation that square tube and support jig 7 are bent in threedimensional model obtain the dimensional structure of support jig 7 into
Row production, then four pieces of good sidings of blanking are carried out on the support jig 7 made respectively it is assembled, by moulding bed rigidity and
Simple assembly tooling can make four pieces of siding bendings in place, and the composite bending modulus of siding in a thickness direction is the weak of siding
Axis direction, in the case where the thickness of each siding is much smaller than length, and each siding is individually arranged, each other and not formed rigidity
In the case where fixation, deformation of the siding on bracket moulding bed is very easy to.Using 7 pairs of support jig be bent square tube each siding into
The process of row positioning assembly is very convenient, and quality is higher, can be conducive to the quality testing for carrying out the later period.Entire bending square tube
Production method compared to common process, without cold-bending processing equipment, extreme misery bending can complete the production, production process
Very simple, used device, assistant formation tooling are greatly reduced, and can either reduce production cost, are also convenient for using advising greatly
In the production and processing of mould, is conducive to improve processing efficiency, increases economic benefit.
It should be understood that various information are described in the present invention using term " first ", " second " etc., but these information
It should not necessarily be limited by these terms, these terms are only used to for same type of information being distinguished from each other out.For example, not departing from the present invention
In the case where range, " first " information can also be referred to as " second " information, and similar, " second " information can also be referred to as
" first " information.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principle of the present invention, several improvement and deformations can also be made, these improvement and deformations are also considered as
Protection scope of the present invention.
Claims (10)
1. a kind of production method for being bent square tube, which comprises the steps of:
The threedimensional model of bending square tube is completed by Three-dimensional Design Software；
Support jig corresponding with its bottom wall curved shape is designed in the bottom of the threedimensional model of bending square tube, and is determined
Make the dimensional structure of the support jig；
The setting-out expanded view of each siding of the threedimensional model of bending square tube is obtained, and cutting stock is carried out respectively to each siding；
Each siding obtained after blanking is carried out to assembly on support jig, to obtain bending square tube.
2. the production method of bending square tube according to claim 1, which is characterized in that the size of the determining support jig
The step of structure, specifically includes:
Several place sections are selected according to certain interval to the bending square tube being arranged on support jig in Three-dimensional Design Software,
And using the interval between each section as the spacing dimension of the column of the support jig；
The two sides of the bottom wall of the bending square tube on each section height apart from ground respectively is obtained, as the branch support
The height dimension of two heel posts of frame, and determine the gradient in moulding bed face.
3. bending square tube production method according to claim 2, which is characterized in that each siding that will be obtained after blanking
Assembly is carried out on support jig, is specifically included with obtaining the step of being bent square tube:
The placing direction of bending square tube is determined by Three-dimensional Design Software, and obtains the selected location of the bottom wall of bending square tube
The coordinate value at place, to be marked on support jig；
The good bottom wall of blanking is subjected to location and installation according to label, to ensure that the bottom wall is curved at width and thickness two
Bending degree on Qu Fangxiang；
The good two side wall panels of blanking are assembled in the bottom wall respectively, repositioning installation top siding, to be formed
It is bent square tube.
4. the production method of bending square tube according to claim 3, which is characterized in that
After described the step of being bent the threedimensional model of square tube by Three-dimensional Design Software completion, further includes: in bending square tube
Threedimensional model in design several pieces of rectangle technique partitions being arranged at distances from one another, the rectangle technique divider upright is in each described
The side of siding.
5. the production method of bending square tube according to claim 4, which is characterized in that the two sides that blanking is good respectively
Siding is assembled in the bottom wall, and repositioning installation top siding is specifically included with forming the step of being bent square tube:
According to the size of the rectangle technique partition in Three-dimensional Design Software, the blanking for carrying out the rectangle technique partition prepares；
The good rectangle technique partition of blanking is mounted in the bottom wall according to the interval vertical in threedimensional model；
The siding of two sides is assembled, so that the siding of the two sides is respectively perpendicular to the sideline arrangement of the bottom wall, and described
The sideline bending direction of the siding of two sides and the sideline flush of the bottom wall；
The plate face fixation of the siding of the two sides is attached on the side of the rectangle technique partition；
Siding and welding fabrication at the top of the top of panels assembling of the two sides.
6. the production method of bending square tube according to claim 5, which is characterized in that bending on the support jig
Before the bottom wall of square tube, the siding of two sides and top siding are assembled further include:
In blanking process, bottom wall, the siding of two sides and top siding are needed in assembly positioned at the end of the same side
It is labeled, to determine the bending direction of bending square tube.
7. according to the production method of the described in any item bending square tubes of claim 3 to 6, which is characterized in that described to pass through three-dimensional
Design software determine bending square tube placing direction, and obtain bending square tube bottom wall selected location at coordinate value,
It is specifically included with the step of being marked on support jig:
By chosen in Three-dimensional Design Software bending square tube bottom wall head and the tail both ends as datum mark, and by head and the tail benchmark
Line between point is as reference line；
Obtain height of the reference line described in each section apart from ground；
Obtain the two sides of the bottom wall on each section distance apart from the reference line respectively；
The position of the two sides of the bottom wall is identified at each sectional position on the moulding bed face.
8. the production method of bending square tube according to claim 7, which is characterized in that each wall that will be obtained after blanking
After the step of plate carries out assembly on support jig, is bent square tube with acquisition, further includes:
Compact dimensions measurement and inspection are carried out in the molding bending square tube of the support jig over-assemble.
9. the production method of bending square tube according to claim 8, which is characterized in that described in support jig over-assemble
Molding bending square tube carries out compact dimensions measurement and specifically includes the step of inspection:
Obtain the vertical of reference line described in the distance from top of the siding of the two sides for the bending square tube completed in support jig over-assemble
Highly, and bending square tube top siding and bottom wall be located at the relative distance between the both ends of the same side；
The vertical height and relative distance that will acquire are compared with the design requirement size in Three-dimensional Design Software respectively, if reaching
It then completes to weld to design requirement.
10. the production method of bending square tube according to any one of claims 1 to 5, which is characterized in that the wall that blanking obtains
The ratio of the thickness δ and cross-sectional shape size B of plate are less than 0.05, wherein δ≤14mm.
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| CN111195819A (en) * | 2020-01-15 | 2020-05-26 | 中国十七冶集团有限公司 | Arc square tube bending transition device and construction method thereof |
| CN112173343A (en) * | 2020-09-24 | 2021-01-05 | 中国核动力研究设计院 | Spent fuel storage grillwork square tube connecting piece and welding method |
| CN113523046A (en) * | 2021-06-02 | 2021-10-22 | 中国铁建港航局集团有限公司 | Ring beam bending process |
| CN113579660A (en) * | 2021-08-11 | 2021-11-02 | 浙江精工钢结构集团有限公司 | Manufacturing process method of curved surface special-shaped thick part plate |
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