CN104249111B - Combined bending molding die for thin-walled rectangular tube - Google Patents
Combined bending molding die for thin-walled rectangular tube Download PDFInfo
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- CN104249111B CN104249111B CN201410257517.9A CN201410257517A CN104249111B CN 104249111 B CN104249111 B CN 104249111B CN 201410257517 A CN201410257517 A CN 201410257517A CN 104249111 B CN104249111 B CN 104249111B
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- bending die
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Abstract
A combined bending molding die for a thin-walled rectangular tube comprises a bending die, an insert, a clamp block, a press block, an E bending crease-resistant block and an H bending crease-resistant block; the bending die, the insert, the clamp block and the press block have both an E bending function and an H bending function; the bending die is positioned by a pin hole, key slots and the like and is fixed on a machine tool by screws; the insert is positioned by a screw and is fixed on the bending die; the clamp block is positioned by a key slot and is fixed on the machine tool by a screw; the press block is positioned by a key slot and is fixed on the machine tool by a screw; the E bending crease-resistant block and the H bending crease-resistant block are positioned by key slots and are fixed by screws. Each of the bending die, the insert, the clamp block and the press block is provided with an E bending slot and an H bending slot. In a bending molding process, a tubular product to be bent is arranged in the bending slot, the bending die, the insert and the clamp block perform rotation motion along with the machine tool under the action of the machine tool, the press block performs feeding motion along with the machine tool, and the crease-resistant blocks are motionless. The combined bending molding die can realize H bending and E bending simultaneously, is high in automation degree, and is simple and convenient to operate, the assembly times are reduced, the molding precision is improved and the structure is compact.
Description
First, technical field
The present invention relates to a kind of numerical controlled bending of pipe processing mold, the compound rotary draw bending mould of specifically a kind of thin-walled rectangular tube.
2nd, background technology
Bending thin-wall rectangular tube part, wants due to disclosure satisfy that to aspects such as product lightweight, Large Copacity and low-losses
Ask, be widely applied in the fields such as Aeronautics and Astronautics, communication, satellite and microwave measurement.Numerical-controlled bending technology is conventional tube
A kind of advanced Technology of Plastic Processing that material develops and produce around the industry of bending process bonding machine bed and Numeric Control Technology, it has also become advanced modeling
One important directions of property process technology research and development geared to the 21st century.The warp architecture form of rectangular tube has three kinds：It is a kind of
It is the curve form along rectangular tube leptoprosopy direction, is easier to bending forming, commonly referred to E is curved, the bool for being obtained is 1；One
Kind is the curve form along rectangular tube width face direction, it is more difficult to which bending forming, commonly referred to H are curved, and the bool for being obtained is 2；One
Kind it is to have that E is curved and H curved warp architecture form is referred to as complex bend concurrently, the bool for being obtained is 3.
At present, the requirement with modern industry to bool shape complexity is improved constantly, thin-walled rectangular tube complex bend
Become an important manufacture field.However, curved to the E of the bending mainly either simplex sequence of thin-walled rectangular tube at present or either simplex sequence
H it is curved, and to have concurrently the complex bend that E is curved and H is curved be related to it is less.The E of either simplex sequence is curved or H of either simplex sequence is curved is only capable of realizing pipe fitting
Single bend mode.The complex bend of pipe fitting is realized, it is winding that needs are implemented separately E on E bending moulds and H bending moulds respectively
The bent and winding songs of H, reduce production efficiency；And die assembly number of times is increased, bending precision is difficult to be protected.
3rd, the content of the invention
In order to meet needs of the modern processing to thin-walled rectangular tube complex bend mode, the production of pipe fitting complex bend is improved
Efficiency and bending precision, while realizing that the E of thin-walled rectangular tube is curved curved with H, the present invention devises a set of suitable thin-walled rectangular tube and answers
Close the mould of rotary draw bending.
The present invention includes that bending die 4, insert 5, fixture block 6, briquetting 7 and E are curved wrinkle resistant piece 8 and H curved wrinkle resistant piece 9, bending die
4th, insert 5, fixture block 6, briquetting 7 have that E is curved and the curved functions of H concurrently.
The bending die includes the curved groove 13 of the curved grooves 12, H of E, screwed hole 11 and 14, pin hole 10, base 15 and key
Groove 16.Bending die base is coupled by pin hole 10, keyway 16 and screwed hole 14 with lathe.Bending die type groove 12 and 13 should
With the place plane keeping parallelism of base 15, it is ensured that bend stablizing for type groove level height.The width of the curved grooves 12 of E is equal to pipe fitting width
The size in face, and its depth is equal to the 1/2 of pipe fitting leptoprosopy size.The radius of the curved grooves of E is equal to the winding bilge radius of E and pipe of pipe fitting
The difference of the half of part leptoprosopy size.The width of the curved grooves 13 of H is equal to the size of pipe fitting leptoprosopy, and its depth is equal to pipe fitting width face chi
Very little 1/2.The radius of the curved grooves of H is equal to the difference of the half of the winding bilge radius of H and pipe fitting width face size of pipe fitting.
The insert includes the curved groove 19 of the curved grooves 18, H of E and screwed hole 17.Insert is fixed on curved by screwed hole 17
Qu Mo is upper and is connected with bending die.Insert type groove size type groove corresponding with bending die is equivalently-sized, assembles rear profile groove center
Line should be maintained at sustained height.Type groove inner surface application fine sandpaper is polished, in case scratching pipe fitting in BENDING PROCESS.
The fixture block includes the curved groove 21 of the curved grooves 20, H of E, keyway 22 and screwed hole 23.Keyway and screwed hole are acted primarily as
Fixation.Keyway should be vertical with type groove holding, prevents the variation of BENDING PROCESS medium cell horizontal level.Fixture block type groove and insert
Type groove is engaged, and correspondence type groove is equivalently-sized.The inner surface of fixture block type groove should have certain roughness, only need to be carried out with coarse sandpaper
Polishing, is conducive to clamping pipe fitting, prevents pipe fitting in BENDING PROCESS from skidding.
The briquetting includes the curved groove 25 of the curved grooves 24, H of E, screwed hole 26 and keyway 27.Keyway and screwed hole are acted primarily as
Fixed briquetting effect, is attached with lathe.Keyway should be vertical with type groove holding, prevents the medium-sized groove center line level of BENDING PROCESS
The variation of height.Briquetting type groove size type groove corresponding with fixture block is equivalently-sized.
Curved wrinkle resistant piece of the E includes screwed hole 28, keyway 29 and tangent arc 30.Keyway and screw hole act primarily as fixation
Effect.Tangent arc 30 is tangent with the curved grooves 12 of bending die E, therefore its radius is identical with the radius of the curved grooves 12 of bending die E.
Curved wrinkle resistant piece of the H includes screwed hole 31, keyway 32 and tangent arc 33.Keyway and screwed hole act primarily as fixation
Effect.Tangent arc 33 is tangent with the curved grooves 13 of bending die H, therefore its radius is identical with the radius of the curved grooves 13 of bending die H.
It is an advantage of the invention that：Compact conformation, can simultaneously realize that H is curved and E is curved；Assembling number of times is reduced, forming accuracy is improved.
4th, illustrate
Fig. 1 is thin-walled rectangular tube numerical-controlled bending bool schematic diagram；
Fig. 2 is the compound rotary draw bending die assembly schematic diagram of thin-walled rectangular tube numerical control；
Fig. 3 is to have curved and the curved grooves of H the bending die schematic diagrams of E concurrently；
Fig. 4 is to have curved and the curved grooves of H the insert schematic diagrams of E concurrently；
Fig. 5 is to have curved and the curved grooves of H the fixture block schematic diagrams of E concurrently；
Fig. 6 is to have curved and the curved grooves of H the briquetting schematic diagrams of E concurrently；
Fig. 7 is to be adapted to wrinkle resistant piece of curved schematic diagram of E；
Fig. 8 is to be adapted to wrinkle resistant piece of curved schematic diagram of H；
Fig. 9 is thin-walled rectangular tube numerical-controlled bending forming process schematic diagram.
Wherein：The winding composite bent of the heating bending part 3. bending bending dies 5. of bool 4. of the winding heating bending part 2.H of 1.E are inlayed
Curved wrinkle resistant piece of 10. pin hole 11,14,17,23,26,28,31. screw threads of the curved wrinkle resistant piece of 9.H of the briquetting 8.E of 6. fixture block of block 7.
The curved keyway of 15. bending die base of groove 16,22,27,29,32. of the curved groove 13,19,21,25.H in hole 12,18,20,24.E
30th, the rectangular pipe fittings of 33. tangent arc, 34. plug 35.
5th, specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described with exemplary embodiments.
The shaping of thin-walled rectangular tube numerical-controlled bending is the complex nonlinear forming process under multifactor effect, needs multiple kinds of molds
Synergism and strict cooperation.In pipe fitting BENDING PROCESS, it is an especially complex and important link to adjust assembling mould.
(1) assembling of bending die.Due to bending die 4DOF it is minimum, only by keyway 16, screwed hole 14 and pin hole 10 with
Lathe couples, therefore stationary curved mould first.By 4 screwed holes and keyway stationary curved mould base 15, couple with lathe.Examine
Consider the stability of bending die, reinforced by pin hole 10, prevent bending die from inclining.
(2) assembling of insert.Insert is fixed on bending die by screwed hole 17, adjustment height, make bending type groove 18,
19 coordinate respectively with 12,13, it is ensured that insert type groove is with bending die flexure type groove center line in same level height.
(3) assembling of fixture block.Fixture block is coupled by keyway 22 and screwed hole 23 with lathe.Fixture block type groove and insert type
Groove coordinates.Adjustment relative altitude, whether, in same level height, its high and low position can for the type groove for observing fixture block type groove with insert
To be adjusted by the screw on fixture block.Fixture block clamping force is by Digit Control Machine Tool control.
(4) wrinkle resistant piece of assembling.Wrinkle resistant piece is coupled by screwed hole 28,31 and keyway 29,32 with lathe, wrinkle resistant piece
It is fixed on wrinkle resistant piece of support.Wrinkle resistant piece of tangent arc 30,33 radiuses are identical with the radius of the corresponding type groove of bending die respectively, so as to
It is possibly realized laminating, it is necessary to assure wrinkle resistant piece of end and bending die point of contact flush.The linearity of tube part itself and
The regulation of lathe to ensure the high and low position of wrinkle resistant piece and bending die, is allowed to same determining wrinkle resistant piece of high and low position
On height.
(5) assembling of briquetting.Briquetting is coupled by keyway 27 and screwed hole 26 with lathe.Type of the observation briquetting with wrinkle resistant piece
Whether chamber by adjusting screw briquetting on adjusts the high and low position of briquetting in same height.Alternately two on adjustment briquetting
The screw at end, will not only ensure the wrinkle resistant piece of position and briquetting between, also should ensure that the levelness of briquetting itself.Briquetting feeding speed
Degree is controlled by Digit Control Machine Tool, generally equivalent to the linear velocity of briquetting.
What the present invention was realized in：As shown in figure 9, before bending rectangular pipe fittings 35 be clamped in insert 5 and fixture block 6 it
Between, insert is fixed on bending die 4 and is integrally formed with bending die, and afterbody is between briquetting 7 and wrinkle resistant piece 8 (or 9), internal
There is plug 34 to support (special patent is related to due to plug, therefore this patent is no longer described in detail).During bending, the traction tube of fixture block 6
Part turns to together the angle of bend of setting around bending die, and pipe fitting is fitted so that pipe fitting reaches the bending half of needs with bending die
Footpath, then pulls out plug, and fixture block and briquetting unclamp, and takes out pipe fitting, and bending die and fixture block reset, and complete first order buckling action.It is right
In complex bend bool 3 as shown in Figure 1, pipe fitting leptoprosopy is put in the curved grooves of bending die H first, is entered according to as above step
Row H is curved.After completing first order buckling, then pipe fitting width face is put into carry out E in the curved grooves of E curved.So it is achieved that thin-walled rectangular tube
Complex bend.Because this bending die there are 2 bending type grooves, therefore 2 pipe fittings can be simultaneously bent, realize that E is curved and H respectively
It is curved.Because bending die has been assembled, therefore mould need not be again adjusted, therefore improve efficiency, and ensure that bending
Precision.
Claims (6)
1. the mould of the compound rotary draw bending of a kind of thin-walled rectangular tube, it is characterised in that including bending die, insert, fixture block, briquetting with
And E it is curved wrinkle resistant piece and H it is curved wrinkle resistant piece, bending die, insert, fixture block, briquetting have that E is curved and the curved functions of H concurrently；Bending die passes through pin
Hole and keyway are positioned, and are screwed on lathe；Insert is located and fixed within bending die by screw, is connected with bending die
It is integrated；Fixture block is positioned by keyway and is fixed on lathe by screw；Briquetting is positioned by keyway and is screwed in machine
On bed；Curved wrinkle resistant piece and H curved wrinkle resistant piece of E is positioned by keyway and is fixed with screw；Wherein, bending die, insert, fixture block and
Briquetting has the curved grooves of E and the curved grooves of H concurrently；In bending forming, tubing to be bent is placed in bending type groove, in lathe effect
Under, bending die, insert and fixture block rotate with lathe, and briquetting does feed motion with lathe, and wrinkle resistant piece then maintains static.
2. as claimed in claim 1 a kind of thin-walled rectangular tube is combined the mould of rotary draw bending, it is characterised in that bending die passes through key
Groove and pin are positioned on lathe, and are fixed on lathe using screw so that bending die type groove and base place plane
Keeping parallelism, it is ensured that bending die type groove level height is stablized；The width of the curved grooves of E is equal to the size in pipe fitting width face, and its depth
Degree is equal to the winding bilge radius of E of pipe fitting and the one of pipe fitting leptoprosopy size equal to the radius of the curved grooves of 1/2, E of pipe fitting leptoprosopy size
Half difference；The width of the curved grooves of H is equal to the size of pipe fitting leptoprosopy, and its depth is equal to the curved grooves of 1/2, H of the wide face size of pipe fitting
Radius be equal to pipe fitting the winding bilge radius of H and pipe fitting width face size half difference, during bending forming, rectangular tube be located at bend
In model groove, and the rotation with bending die occurs bending and deformation.
3. as claimed in claim 1 a kind of thin-walled rectangular tube is combined the mould of rotary draw bending, it is characterised in that insert passes through screw
It is fixed on bending die and is connected with bending die；Insert type groove size type groove corresponding with bending die is equivalently-sized, after assembling
Type groove centrage should be maintained at sustained height；Because pipe fitting relative with insert generation can slide in BENDING PROCESS, in order to avoid drawing
Hinder tube surface, type groove inner surface application fine sandpaper is polished.
4. as claimed in claim 1 a kind of thin-walled rectangular tube is combined the mould of rotary draw bending, it is characterised in that fixture block passes through keyway
Positioned, and be screwed on lathe；Keyway should be vertical with type groove holding, prevents BENDING PROCESS medium cell horizontal level
Variation；Fixture block type groove is engaged with insert type groove, and correspondence type groove is equivalently-sized；The inner surface of fixture block type groove should have certain thick
Rugosity, only need to be polished with coarse sandpaper, be conducive to clamping pipe fitting, prevent pipe fitting in BENDING PROCESS from skidding.
5. as claimed in claim 1 a kind of thin-walled rectangular tube is combined the mould of rotary draw bending, it is characterised in that briquetting passes through keyway
Positioned, and be attached with lathe with screw；Keyway should be vertical with type groove holding, prevents the medium-sized groove center line of BENDING PROCESS
The variation of level height；Briquetting type groove size type groove corresponding with fixture block is equivalently-sized.
6. as claimed in claim 1 a kind of thin-walled rectangular tube is combined the mould of rotary draw bending, it is characterised in that E is curved wrinkle resistant piece and H
Curved wrinkle resistant piece is positioned by keyway, and is screwed on lathe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410257517.9A CN104249111B (en) | 2014-06-06 | 2014-06-06 | Combined bending molding die for thin-walled rectangular tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410257517.9A CN104249111B (en) | 2014-06-06 | 2014-06-06 | Combined bending molding die for thin-walled rectangular tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104249111A CN104249111A (en) | 2014-12-31 |
| CN104249111B true CN104249111B (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410257517.9A Expired - Fee Related CN104249111B (en) | 2014-06-06 | 2014-06-06 | Combined bending molding die for thin-walled rectangular tube |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127302A (en) * | 2015-10-14 | 2015-12-09 | 苏州新协力特种工业模板有限公司 | Bending die for square pipes |
| CN106064186B (en) * | 2016-06-30 | 2018-02-13 | 国营第六一六厂 | The pipe fitting Process Unit and bending method of Large-power High-Speed diesel engine |
| CN109604397A (en) * | 2018-12-07 | 2019-04-12 | 中国航发南方工业有限公司 | Bending machine |
| CN112893556B (en) * | 2021-01-18 | 2022-04-26 | 北京航空航天大学 | Hot bending forming device for titanium alloy thin-wall full-circle part |
| CN114378153B (en) * | 2021-12-22 | 2023-11-28 | 中船重工西安东仪科工集团有限公司 | Cold bending die and cold bending method for thin-wall steel pipe |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4744233A (en) * | 1986-07-14 | 1988-05-17 | Ap Industries, Inc. | Apparatus for bending rectangular tubes |
| CN201552220U (en) * | 2009-11-06 | 2010-08-18 | 长治市钜星锻压机械设备制造有限公司 | Deformation-tracking bending die for rectangular thin-wall tube |
| CN203541265U (en) * | 2013-09-13 | 2014-04-16 | 天津市海晟易铭科技有限公司 | Bending die of rectangular tubes |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3297214B2 (en) * | 1994-08-24 | 2002-07-02 | ワイケイケイ株式会社 | Bending method and bending machine for long metal bars |
| FR2833868B1 (en) * | 2001-12-20 | 2004-03-05 | Silfax | TUBE BENDING MACHINE AND ITS BENDING DEVICE ON THE LEFT AND / OR RIGHT |
-
2014
- 2014-06-06 CN CN201410257517.9A patent/CN104249111B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4744233A (en) * | 1986-07-14 | 1988-05-17 | Ap Industries, Inc. | Apparatus for bending rectangular tubes |
| CN201552220U (en) * | 2009-11-06 | 2010-08-18 | 长治市钜星锻压机械设备制造有限公司 | Deformation-tracking bending die for rectangular thin-wall tube |
| CN203541265U (en) * | 2013-09-13 | 2014-04-16 | 天津市海晟易铭科技有限公司 | Bending die of rectangular tubes |
Non-Patent Citations (1)
| Title |
|---|
| "铝合金薄壁矩形管绕弯成形起皱极限的预测";刘郁丽等;《重庆大学学报》;20110131;第34卷(第1期);第47-52页 * |
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| CN104249111A (en) | 2014-12-31 |
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