CN104249111A - Combined bending molding die for thin-walled rectangular tube - Google Patents
Combined bending molding die for thin-walled rectangular tube Download PDFInfo
- Publication number
- CN104249111A CN104249111A CN201410257517.9A CN201410257517A CN104249111A CN 104249111 A CN104249111 A CN 104249111A CN 201410257517 A CN201410257517 A CN 201410257517A CN 104249111 A CN104249111 A CN 104249111A
- Authority
- CN
- China
- Prior art keywords
- bending
- curved
- groove
- bending die
- type groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
A combined bending molding die for a thin-walled rectangular tube comprises a bending die with both an E bending function and an H bending function, an insert, a clamp block, a press block, an E bending crease-resistant block and an H bending crease-resistant block; 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
One, technical field
The present invention relates to a kind of numerical controlled bending of pipe processing mold, specifically a kind of thin-walled rectangular tube compound rotary draw bending mould.
Two, background technology
Bending thin-wall rectangular tube part, owing to can meet the requirement to aspects such as product lightweight, Large Copacity and low-losses, is widely applied in the fields such as Aeronautics and Astronautics, communication, satellite and microwave measurement.Numerical-controlled bending technology is that traditional piping material is gone for a stroll the advanced Technology of Plastic Processing of one that technique produces in conjunction with machine tool industry and Numeric Control Technology development, has become an important directions of advanced Technology of Plastic Processing research and development geared to the 21st century.The warp architecture form of rectangular tube has three kinds: a kind of is curve form along rectangular tube leptoprosopy direction, and be easier to bending forming, be commonly referred to E curved, the bool obtained is 1; Be the curve form along rectangular tube wide direction, more difficult bending forming, is commonly referred to H curved, and the bool obtained is 2; Be have the warp architecture form that E is curved and H is curved concurrently to be called a complex bend, the bool obtained is 3.
At present, along with the requirement of modern industry to bool shape complexity improves constantly, thin-walled rectangular tube complex bend becomes an important manufacture field.But, if curved to the E of the single operation of the curved major of thin-walled rectangular tube H that is curved or single operation at present, and relate to less to having the complex bend that E is curved and H is curved concurrently.The curved single bend mode that only can realize pipe fitting of E H that is curved or single operation of single operation.Realize the complex bend of pipe fitting, need on E bending mould and H bending mould, to realize separately the winding song of E and the winding song of H respectively, reduce production efficiency; And adding die assembly number of times, bending precision is difficult to be protected.
Three, summary of the invention
In order to the needs of satisfied modern times processing to thin-walled rectangular tube complex bend mode, improve the production efficiency of pipe fitting complex bend and bending precision, the E simultaneously realizing thin-walled rectangular tube is curved curved with H, and the present invention devises the mould of a set of applicable thin-walled rectangular tube compound rotary draw bending.
The present invention includes have the curved and curved function of H of E concurrently bending die 4, insert 5, fixture block 6, briquetting 7 and E curved wrinkle resistant piece 8 and curved wrinkle resistant piece 9 of H.
Described bending die comprises the curved groove of E 12, the curved groove 13 of H, screwed hole 11 and 14, pin hole 10, base 15 and keyway 16.Bending die base is connected with lathe by pin hole 10, keyway 16 and screwed hole 14.Bending die groove 12 and 13 should with base 15 place plane keeping parallelism, ensure the stable of flexure type groove level height.The width of the curved groove of E 12 equals the size of wide of pipe fitting, and its degree of depth equals 1/2 of pipe fitting leptoprosopy size.The radius of the curved groove of E equals the difference of the winding bilge radius of E of pipe fitting and the half of pipe fitting leptoprosopy size.The width of the curved groove 13 of H equals the size of pipe fitting leptoprosopy, and its degree of depth equals 1/2 of pipe fitting wide size.The radius of the curved groove of H equals the difference of the winding bilge radius of H of pipe fitting and the half of pipe fitting wide size.
Described insert comprises the curved groove of E 18, the curved groove 19 of H and screwed hole 17.Insert to be fixed on bending die by screwed hole 17 and to be connected with bending die.Insert type groove size type groove corresponding to bending die is measure-alike, and assembling rear profile groove center line should remain on sustained height.Type groove inner surface application fine sandpaper is polished, in case scratch pipe fitting in BENDING PROCESS.
Described fixture block comprises the curved groove of E 20, the curved groove 21 of H, keyway 22 and screwed hole 23.Keyway and screwed hole mainly play fixation.Keyway should keep vertical with type groove, prevents the variation of BENDING PROCESS medium cell horizontal level.Fixture block type groove matches with insert type groove, and corresponding type groove is measure-alike.The inner surface of fixture block type groove should have certain roughness, only need carry out polishing with coarse sandpaper, is conducive to clamping pipe fitting, prevents pipe fitting in BENDING PROCESS from skidding.
Described briquetting comprises the curved groove of E 24, the curved groove 25 of H, screwed hole 26 and keyway 27.Keyway and screwed hole mainly play fixing briquetting effect, are connected with lathe.Keyway should keep vertical with type groove, prevents the variation of BENDING PROCESS medium cell center line level height.Briquetting type groove size type groove corresponding to fixture block is measure-alike.
Curved wrinkle resistant piece of described E comprises screwed hole 28, keyway 29 and tangent arc 30.Keyway and screw hole mainly play fixation.Tangent arc 30 is tangent with bending die E curved groove 12, and therefore its radius is identical with the radius of the curved groove of bending die E 12.
Curved wrinkle resistant piece of described H comprises screwed hole 31, keyway 32 and tangent arc 33.Keyway and screwed hole mainly play fixation.Tangent arc 33 is tangent with bending die H curved groove 13, and therefore its radius is identical with the radius of the curved groove of bending die H 13.
Advantage of the present invention is: compact conformation, can realize that H is curved and E is curved simultaneously; Reduce assembling number of times, improve forming accuracy.
Four, accompanying drawing explanation
Fig. 1 is thin-walled rectangular tube numerical-controlled bending bool schematic diagram;
Fig. 2 is thin-walled rectangular tube numerical control compound rotary draw bending die assembly schematic diagram;
Fig. 3 is the bending die schematic diagram having the curved and curved groove of H of E concurrently;
Fig. 4 is the insert schematic diagram having the curved and curved groove of H of E concurrently;
Fig. 5 is the fixture block schematic diagram having the curved and curved groove of H of E concurrently;
Fig. 6 is the briquetting schematic diagram having the curved and curved groove of H of E concurrently;
Fig. 7 is the curved wrinkle resistant piece of schematic diagram of applicable E;
Fig. 8 is the curved wrinkle resistant piece of schematic diagram of applicable H;
Fig. 9 is thin-walled rectangular tube numerical-controlled bending forming process schematic diagram.
Wherein: 1.E winding heating bending part 2.H winding heating bending part 3. composite bent bend curved wrinkle resistant piece of 10. pin hole 11,14,17,23,26,28,31. screwed holes 12 of the curved wrinkle resistant piece of 9.H of bool 4. bending die 5. insert 6. fixture block 7. briquetting 8.E, 18,20,24.E flexure type groove 13,19,21,25.H flexure type groove 15. bending die base 16,22,27,29,32. keyway 30,33. tangent arc 34. plug 35. rectangular pipe fittings
Five, detailed description of the invention
Below in conjunction with accompanying drawing and exemplary embodiments, the invention will be further described.
The shaping of thin-walled rectangular tube numerical-controlled bending is the complex nonlinear forming process under multifactor effect, needs the synergy of multiple kinds of molds and strict cooperation.In pipe fitting BENDING PROCESS, adjustment assembling mould is a link complicated and important especially.
(1) assembling of bending die.Because bending die 4DOF is minimum, only connect with lathe by keyway 16, screwed hole 14 and pin hole 10, therefore first stationary curved mould.By 4 screwed holes and keyway stationary curved mould base 15, connect with lathe.Consider the stability of bending die, reinforced by pin hole 10, prevent bending die from tilting.
(2) assembling of insert.Be fixed on bending die by screwed hole 17 by insert, adjustment height, makes flexure type groove 18,19 respectively with 12,13 coordinate, and ensures that insert type groove and bending die flexure type groove center line are in same level height.
(3) assembling of fixture block.Fixture block is connected with lathe by keyway 22 and screwed hole 23.Fixture block type groove and insert type slot fit.Adjustment relative altitude, whether observe the type groove of fixture block type groove and insert in same level height, its high and low position can be adjusted by the screw on fixture block.Fixture block clamping force is controlled by Digit Control Machine Tool.
(4) assembling of wrinkle resistant piece.Wrinkle resistant piece is connected with lathe by screwed hole 28,31 and keyway 29,32, and wrinkle resistant piece is fixed on wrinkle resistant piece of support.The radius of tangent arc 30,33 radius of wrinkle resistant piece type groove corresponding to bending die is respectively identical, thus makes laminating become possibility, must ensure that the end of wrinkle resistant piece is mutually concordant with bending die point of contact.The high and low position of wrinkle resistant piece is determined in the linearity of tube part self and the adjustment of lathe, with ensure wrinkle resistant piece with the high and low position of bending die, make it on same height.
(5) assembling of briquetting.Briquetting is connected with lathe by keyway 27 and screwed hole 26.The die cavity observing briquetting and wrinkle resistant piece, whether at same height, adjusts the high and low position of briquetting by the adjustment screw on briquetting.Alternately adjust the screw at two ends on briquetting, not only will ensure the position between wrinkle resistant piece and briquetting, also should ensure the levelness of briquetting self.Briquetting feed speed is controlled by Digit Control Machine Tool, generally equals the linear velocity of briquetting.
The present invention is achieved in that as shown in Figure 9, before bending, rectangular pipe fittings 35 is clamped between insert 5 and fixture block 6, insert is fixed on bending die 4 to become to be integrated with bending die, afterbody is between briquetting 7 and wrinkle resistant piece 8 (or 9), inside has plug 34 to support (relate to because plug has special patent, therefore this patent no longer describes in detail).Time bending, fixture block 6 draws the pipe fitting Qu Mo that goes for a stroll and turns to the angle of bend of setting together, and the laminating of pipe fitting and bending die makes pipe fitting reach the bending radius of needs, then extract plug out, fixture block and briquetting unclamp, and take out pipe fitting, bending die and fixture block reset, and complete first order buckling action.For complex bend bool 3 as shown in Figure 1, first pipe fitting leptoprosopy is put into the curved groove of bending die H, carry out H according to as above step curved.After completing first order buckling, wider for pipe fitting face being put into the curved groove of E, to carry out E curved.So just achieve the complex bend of thin-walled rectangular tube.Because this bending die has 2 flexure type grooves, therefore can bend 2 pipe fittings simultaneously, realize E respectively curved curved with H.Because bending die assembles, therefore do not need again to regulate mould, therefore improve efficiency, and ensure that bending precision.
Claims (6)
1. a mould for thin-walled rectangular tube compound rotary draw bending, is characterized in that, comprise have the curved and curved function of H of E concurrently bending die, insert, fixture block, briquetting and E curved wrinkle resistant piece and curved wrinkle resistant piece of H; Bending die by the location such as pin hole and keyway, and is screwed on lathe; Insert is located by screw and is fixed on bending die, connects as one with bending die; Fixture block is located by keyway and is fixed on lathe by screw; Briquetting is located by keyway and is screwed on lathe; E curved wrinkle resistant piece and curved wrinkle resistant piece of H to be located by keyway and to be fixed with screw.Wherein, bending die, insert, fixture block and briquetting all have the curved groove of E and the curved groove of H concurrently.In bending forming, tubing to be bent is placed in flexure type groove, under lathe effect, bending die, insert and fixture block rotate with lathe, and briquetting does feed motion with lathe, and wrinkle resistant piece then maintains static.
2. the mould of a kind of thin-walled rectangular tube compound rotary draw bending as claimed in claim 1, it is characterized in that, bending die is positioned on lathe by keyway and pin, and use screw to be fixed on lathe, make bending die groove and base place plane keeping parallelism, ensure the stable of flexure type groove level height; The width of the curved groove of E equals the size of wide of pipe fitting, and the radius that its degree of depth equals 1/2, E curved groove of pipe fitting leptoprosopy size equals the difference of the winding bilge radius of E of pipe fitting and the half of pipe fitting leptoprosopy size; The width of the curved groove of H equals the size of pipe fitting leptoprosopy, and its degree of depth equals 1/2 of pipe fitting wide size, the radius of the curved groove of H equals the difference of the winding bilge radius of H of pipe fitting and the half of pipe fitting wide size, during bending forming, rectangular tube is positioned at flexure type groove, and occurs bending and deformation with the rotation of bending die.
3. the mould of a kind of thin-walled rectangular tube compound rotary draw bending as claimed in claim 1, is characterized in that, insert to be fixed by screws on bending die and to be connected with bending die; Insert type groove size type groove corresponding to bending die is measure-alike, and assembling rear profile groove center line should remain on sustained height; Due to pipe fitting in BENDING PROCESS can with insert generation relative sliding, in order to avoid scratch tube surface, type groove inner surface application fine sandpaper is polished.
4. the mould of a kind of thin-walled rectangular tube compound rotary draw bending as claimed in claim 1, it is characterized in that, fixture block is positioned by keyway, and is screwed on lathe; Keyway should keep vertical with type groove, prevents the variation of BENDING PROCESS medium cell horizontal level; Fixture block type groove matches with insert type groove, and corresponding type groove is measure-alike; The inner surface of fixture block type groove should have certain roughness, only need carry out polishing with coarse sandpaper, is conducive to clamping pipe fitting, prevents pipe fitting in BENDING PROCESS from skidding.
5. the mould of a kind of thin-walled rectangular tube compound rotary draw bending as claimed in claim 1, it is characterized in that, briquetting is positioned by keyway, and is connected with lathe with screw.Keyway should keep vertical with type groove, prevents the variation of BENDING PROCESS medium cell center line level height; Briquetting type groove size type groove corresponding to fixture block is measure-alike.
6. the mould of a kind of thin-walled rectangular tube compound rotary draw bending as claimed in claim 1, is characterized in that, wrinkle resistant piece of the curved groove of E and wrinkle resistant piece of the curved groove of H are all positioned by keyway, and are screwed on lathe; Tangent arc is tangent with corresponding bending die groove, and therefore its radius is identical with the radius of corresponding bending die groove.
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 true CN104249111A (en) | 2014-12-31 |
| CN104249111B CN104249111B (en) | 2017-05-17 |
Family
ID=52184565
Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104249111B (en) |
Cited By (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 |
| CN106064186A (en) * | 2016-06-30 | 2016-11-02 | 国营第六六厂 | The pipe fitting Process Unit of Large-power High-Speed diesel engine and bending method |
| CN109604397A (en) * | 2018-12-07 | 2019-04-12 | 中国航发南方工业有限公司 | Bending machine |
| CN112893556A (en) * | 2021-01-18 | 2021-06-04 | 北京航空航天大学 | Hot bending forming device for titanium alloy thin-wall full-circle part |
| CN114378153A (en) * | 2021-12-22 | 2022-04-22 | 中船重工西安东仪科工集团有限公司 | Thin-wall steel pipe cold bending die and cold bending method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4744233A (en) * | 1986-07-14 | 1988-05-17 | Ap Industries, Inc. | Apparatus for bending rectangular tubes |
| JPH0857547A (en) * | 1994-08-24 | 1996-03-05 | Ykk Kk | Method for bending long size shaped metallic member and machine therefor |
| US20050172690A1 (en) * | 2001-12-20 | 2005-08-11 | Silfax | Tube bending machine and its right and/or left bending device |
| 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 |
-
2014
- 2014-06-06 CN CN201410257517.9A patent/CN104249111B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4744233A (en) * | 1986-07-14 | 1988-05-17 | Ap Industries, Inc. | Apparatus for bending rectangular tubes |
| JPH0857547A (en) * | 1994-08-24 | 1996-03-05 | Ykk Kk | Method for bending long size shaped metallic member and machine therefor |
| US20050172690A1 (en) * | 2001-12-20 | 2005-08-11 | Silfax | Tube bending machine and its right and/or left bending device |
| 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 |
|---|
| 刘郁丽等: ""铝合金薄壁矩形管绕弯成形起皱极限的预测"", 《重庆大学学报》, vol. 34, no. 1, 31 January 2011 (2011-01-31), pages 47 - 52 * |
Cited By (7)
| 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 |
| CN106064186A (en) * | 2016-06-30 | 2016-11-02 | 国营第六六厂 | The pipe fitting Process Unit of Large-power High-Speed diesel engine and bending method |
| 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 |
| CN112893556A (en) * | 2021-01-18 | 2021-06-04 | 北京航空航天大学 | Hot bending forming device for titanium alloy thin-wall full-circle part |
| CN114378153A (en) * | 2021-12-22 | 2022-04-22 | 中船重工西安东仪科工集团有限公司 | Thin-wall steel pipe cold bending die and cold bending method |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104249111B (en) | 2017-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104249111A (en) | Combined bending molding die for thin-walled rectangular tube | |
| CN101780646B (en) | Reversely boring clamp for vertically clamping center holes of products and application thereof | |
| CN203635710U (en) | Power coupling spin-forming apparatus | |
| CN104400450A (en) | Machine tool clamp | |
| CN103230992A (en) | Method for determining dimension of radial rolled blank of stepped double-cone section ring element | |
| CN204108116U (en) | A kind of novel crease-resistant mould and wear-resisting copper sheet | |
| CN103203472A (en) | Lathing device for iron core of efficient motor without end plate at two ends and machining method thereof | |
| CN103240306A (en) | Forming tooling | |
| CN105478605B (en) | Guide pipe flaring tool | |
| CN103111928A (en) | Grinding method of numerical control coordinate of cam | |
| CN211135423U (en) | High-precision processing die for wind power magnetic steel box | |
| CN207521477U (en) | A kind of pipe crimping tool | |
| CN106623617A (en) | Mold clamping and moving mechanism of plate metal punching machine | |
| CN105583268A (en) | Pressing bending process device capable of forming multiple bends | |
| CN208601112U (en) | A kind of mold for spline production | |
| CN108580664B (en) | Special-shaped tube processing equipment | |
| CN205148800U (en) | Accurate positioner of slider heavy load | |
| CN202037549U (en) | Sand spraying fixture adopting crystal face glue | |
| CN201940562U (en) | Optimal structure of stretching die for copper pipe of crystallizer | |
| CN204604748U (en) | A kind of injection mold | |
| CN205522331U (en) | Injection mold's structure | |
| CN212264327U (en) | Space cylindrical surface elbow stamping die | |
| CN108372638A (en) | A kind of split type guiding tilted footstock mold of connecting rod slider | |
| CN205255382U (en) | Setting device of XPS abnormal shape cross -section section bar | |
| CN203494970U (en) | Structure of dual-boss pipe end molding and clamping die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice |
Addressee: Jiang Zhiyuan Document name: Notification to Go Through Formalities of Registration |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170517 Termination date: 20190606 |