CN101049618A - Method and equipment for machining bent pipe with small R - Google Patents
Method and equipment for machining bent pipe with small R Download PDFInfo
- Publication number
- CN101049618A CN101049618A CN 200710040527 CN200710040527A CN101049618A CN 101049618 A CN101049618 A CN 101049618A CN 200710040527 CN200710040527 CN 200710040527 CN 200710040527 A CN200710040527 A CN 200710040527A CN 101049618 A CN101049618 A CN 101049618A
- Authority
- CN
- China
- Prior art keywords
- workpiece
- mould
- diameter
- pipe
- clamping
- 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.)
- Pending
Links
Images
Abstract
An apparatus for machining a small-radius elbow pipe is composed of a numerally controlled 3D pipe bending machine with a drive unit having hydraulic and servo motors, a pipe bending die set consisting of 8-jaw clamping die, diameter die, clamping die and copying die, and the accessory with movable joint having mandrel and anti-crease die. Its technology is also disclosed.
Description
Technical field
The present invention relates to the Machining Technology field, particularly a kind of processing method and device thereof that metal hollow control is made bent pipe with small R.
Background technology
Bent pipe with small R is a kind of special process of bended pipe, and the bending of the ratio W of all tube bendings place's radius R and workpiece external diameter Ф D less than 1.2, greater than 0.8 is referred to as little R radius bend:
W＝R/ФD
0.8≤W≤1.2
Ovality is meant under little R radius bend, and the workpiece that has bent shaping, can not keep original circularity of steel pipe and is ellipticity because deformation takes place in the knee.Usually the maximum gauge Max Ф D with ellipse is defined as ovality with the difference of minimum diameter Min Ф D and the ratio F of the nominal outside dimension Ф of workpiece D, and ovality is more satisfactory below 15%:
F＝(MaxФD-MinФD)/ФD×100％
F≤15％
Bent pipe with small R is mainly used in the low pressure line of installing space is little, modular construction is compact occasion delivering liquid or gaseous fluid, is used for fields such as Diesel engine, petrol engine, oil fuel charger more.Development along with auto technology, cooperating between engine and car load is more and more tighter, the bulk of engine is required the smaller the better, thereby also requires the parts of engine compact more good more, so the demand of bent pipe with small R is also increasing in the engine workpiece system.
At present aspect the processing of bent pipe with small R because of being subjected to the restriction of equipment, mould and tube material, never obtain on the technology breaking through, so also be difficult to provide complete satisfactory product so far, cause at present also and to adopt traditional foundry goods flange instead of part pipeline, adopt the welding mode to solve bending or to adopt the bend pipe of ovality severe overweight, even be that cost adopts bend radius bent pipe more than the 1.5D to deal with the pipeline connection request of engine class to sacrifice the space.Yet volume is big and heavy, working face is coarse and sand hole is also arranged easily because foundry goods flange product exists, and fracture and seepage situation take place the welding product easily, thereby functional reliability is all relatively poor; The bend pipe of ovality severe overweight causes flow not reach designing requirement easily, and the above bend radius bent pipe of 1.5D can cause the engine volume huge.So developing of automobile industry needs an urgent demand bent pipe with small R technology to have breakthrough.
Summary of the invention
The objective of the invention is will be on the basis of existing general elbow technology, solve the extensibility of tube material, the ovality of bend pipe, the problems such as plumpness of bending section emphatically, provide a kind of easy to process and cost is low, be convenient to the processing method and the device thereof of the novel bent pipe with small R of large-scale production under the prerequisite of the machining accuracy of guaranteeing bent pipe with small R and quality.
The processing unit (plant) of bent pipe with small R of the present invention consists predominantly of three-dimensional numerical control pipe bender, shaping bend pipe mould and the auxiliary of band hydraulic pressure and servo motor driven mechanism, is provided with facilities such as the shaping bend pipe mould that is made of eight pawl clampings, diameter mould, clamping, pattern and pushing tow dolly on the three-dimensional numerical control pipe bender of band hydraulic pressure and servo motor driven mechanism as required; Mainly dispose the reviving joints and the wrinkle resistant mould of cored bar in the auxiliary.Wherein: the working face of described pattern is provided with the semi arch face length strip limited impression that conforms to the workpiece external diameter, plays the spacing and auxilliary workpiece shift that pushes away, guides during work; The semi arch noodles shape limited impression that described clamping is the square shape, working face is provided with conforms to the workpiece external diameter plays the collaborative synchronous bending in holding workpiece end and turns to when carrying out buckling work; Described diameter mould is the R shape, its main working face be positioned at by evagination semicircle R sigmoid leading section edge and both sides inclined side along on the side at the continuous edge that constitutes, above be provided with the semi arch noodles shape limited impression that conforms to the workpiece external diameter, and the semicircle radius of its evagination semicircle shape bent front ends and workpiece require the radius of curvature R of processing suitable; Described wrinkle resistant mould also has a subtask face except that having a main working face, the edge of main working face be flat, above be provided with the described semi arch noodles shape limited impression that conforms to the workpiece external diameter, the subtask face is adjacent with main working face, evagination semicircle R sigmoid leading section edge and side view assembling thereof on its shape and the diameter mould conform to, and the vertical bar shape edge of its main working face and the tangent position on the evagination semicircle R sigmoid leading section edge on the diameter mould coincide under the two coupling is joined state; The diameter of the reviving joints of described cored bar conforms to, is made of leading section joint and rear end plug with the workpiece diameter assembling; Described eight pawl clampings are arranged on the pushing tow dolly, play the boosting workpiece during work and shift forward.
During work, described diameter mould, clamping, pattern, wrinkle resistant mould and all be arranged on the pushing tow dolly of eight pawl clampings on the relevant position of three-dimensional numerical control pipe bender of band hydraulic pressure and servo motor driven mechanism; The reviving joints of described cored bar is placed in the workpiece chamber, and its leading section joint is positioned at workpiece treats on the crooked position, and its tail end plug is positioned at the tube chamber at place, the crooked point of contact of workpiece; Limited impression on the described pattern working face is close to and is arranged on workpiece by holder and treats that closely the knee leans on the tube wall of tail end one side; The adjacent pattern clamping of described clamping is arranged on workpiece and treats on the tube wall of forward end one side in knee; Described diameter mould is corresponding with clamping, be clamped in workpiece treats on the tube wall in knee; The subtask face of described wrinkle resistant mould and the R sigmoid leading section of diameter mould be complementary applying, its main working face and pattern is corresponding is arranged on the workpiece tube wall.When the three-dimensional numerical control pipe bender startup execution bend pipe operation of band hydraulic pressure and servo motor driven mechanism, when clamping is applied axial bending power, workpiece treats that the knee is slowly crooked along the main working face of diameter mould, the pushing tow dolly is along workpiece axial direction boosting simultaneously, make workpiece under the guiding of pattern gradually the reach and along the bending of diameter moding shape, reach required angle at last, because the inner support of inner reviving joints and wrinkle resistant mould slow pushes away effect, the crooked position of the workpiece situation flat and depression of can not collapsing.
Utilize the technological process of processing unit (plant) processing bent pipe with small R of bent pipe with small R of the present invention as follows:
(1) gets the raw materials ready: scale blanking workpiece as requested;
(2) selection tool: select the shaping bend pipe mould and the auxiliary that conform to the workpiece size specification for use;
(3) instrument is gone into the position: install on the three-dimensional numerical control pipe bender of band hydraulic pressure and servo motor driven mechanism selected shaping bend pipe mould and pushing tow dolly are set;
(4) workpiece location: the clamping of workpiece tail end is arranged in the eight pawl clampings of pushing tow dolly, in the workpiece tube chamber, inserts the reviving joints of cored bar, workpiece stretched put in the die cavity of bend pipe mould, place wrinkle resistant mould simultaneously;
(5) startup bending machine, workpiece are gone into the position: start three-dimensional numerical control pipe bender, die cavity clamping on the bending machine is clamped in workpiece on the bend pipe mould, and place, the arrival of the reviving joints of cored bar reach simultaneously crooked starting point point of contact, pattern abut against on the workpiece outer surface, the inner surface of workpiece abuts against on wrinkle resistant mould and the diameter mould;
(6) implement bend pipe: draw by clamping, steel pipe is applied crooked power (axially rotation), servo motor driven mechanism accurately controls angle of bend (anglec of rotation), workpiece is applied two thrusts by equipment simultaneously, one is auxilliary thrust, frictional force between pattern utilization and surface of the work is assisted and is pushed away (along crooked tangential direction), it two is a boosting power, the pushing tow dolly utilizes servo motor to apply boosting power (along the workpiece axial direction) in the workpiece rear end, workpiece is piled into bending area, replenish with the material that fully satisfies the workpiece bending section, wrinkle resistant mould compresses the inboard unnecessary material of bending section simultaneously, thickened wall, wrinkling to prevent the steel pipe inboard, the reviving joints of the inner cored bar of workpiece props up the workpiece inwall in inside, prevent that the workpiece inwall from too subsiding;
(7) bend pipe finishes: after angle of bend put in place, the reviving joints of cored bar oppositely retreated, and workpiece diameter is carried out full circle, and the part of simultaneously part being subsided flattens, and eliminates subsiding of workpiece inwall.
Processing method and device thereof based on the bent pipe with small R of the present invention of above-mentioned design, owing to adopted on the three-dimensional numerical control pipe bender of the band hydraulic pressure of prior art and servo motor driven mechanism, to increase a whole set of shaping bend pipe mould and the auxiliary that conforms to workpiece size be set, by having the support tube wall in the inner setting of workpiece and guaranteeing the quality and help the reviving joints of the cored bar of bending function, in the outer workpiece applying pattern that the clamping size conforms to is set, and tighten to be sticked at the knee medial surface and put the inboard unnecessary material that has bending section and compress, thickened wall, the wrinkle resistant mould that stops the inboard wrinkling function of steel pipe, be equipped with pattern guiding property simultaneously and assist the boosting that pushes away with the pushing tow dolly, each operation is accurately controlled by numerical control servo on three-dimensional numerical control pipe bender, brake forming in clamping of three station moulds, make the rational in infrastructure and science of processing unit (plant) of bent pipe with small R of the present invention, method is feasible and reliable, easy to operate and can guarantee bending quality, production efficiency is greatly enhanced, thoroughly changed the situation that in the past can not produce the bent pipe with small R that meets the requirements, and can be by the bend pipe mould of serial dimensions is set, bending provides the bent pipe with small R of all size size series of products, to meet the need of market, thereby have a tangible technical advance, very strong practicality and wide market application prospect.
Description of drawings
Fig. 1 is the basic facilities element structure schematic diagram of the embodiment of the invention;
Fig. 2 is the initial duty facility layout of an embodiment of the invention schematic diagram;
Fig. 3 is the final duty facility layout of an embodiment of the invention schematic diagram;
Fig. 4 is the process flow diagram of the inventive method.
Among the figure:
1. eight pawl clampings, 2. patterns, 3. clampings, 4. diameter moulds
5. plug 6. reviving joints 7. wrinkle resistant mould 8. pushing tow dollies
9. workpiece 10. limited impressions 11. bent front ends portions 12. rakes
13. main working face 14. subtask faces 15. leading section joints
The specific embodiment
Below in conjunction with accompanying drawing and exemplary embodiments the present invention is further described.
In Fig. 1, Fig. 2 and Fig. 3, the processing unit (plant) of bent pipe with small R of the present invention consists predominantly of three-dimensional numerical control pipe bender, shaping bend pipe mould and the auxiliary of band hydraulic pressure and servo motor driven mechanism, include eight pawl clampings 1, pattern 2, clamping 3 and diameter mould 4 in the shaping bend pipe mould, consist predominantly of reviving joints 6, wrinkle resistant mould 7 and the pushing tow dolly 8 of cored bar 5 in the auxiliary.Wherein: described diameter mould 4 is the R shape, its side by the continuous edge that the edge of the edge of evagination semicircle R sigmoid leading section 11 and both sides rake 12 constitutes is provided with the semi arch noodles shape limited impression 10 that conforms to the external diameter of workpiece 9, and the radius of its evagination semicircle shape bent front ends portion 11 requires the radius of curvature R of processing to conform to workpiece 9; Described pattern 2 is provided with the semi arch face length strip limited impression 10 that conforms to workpiece 9 external diameters; The working face of described clamping 3 is provided with the semi arch noodles shape limited impression 10 that conforms to the external diameter of workpiece 9; Described wrinkle resistant mould 7 except that have an edge be flat, above be provided with the edge that also has the evagination semicircle R sigmoid leading section 11 on a shape and the diameter mould 4 the main working face 13 of the semi arch noodles shape limited impression 10 that conforms to the external diameter of workpiece 9 and the side view assembling conforms to and the vertical bar shape edge of main working face 13 and the subtask face 14 that the tangent position on evagination semicircle R sigmoid leading section 11 edges on the diameter mould 4 coincides under the two coupling is joined state; Described eight pawl clampings 1 are arranged on the pushing tow dolly 8; The reviving joints 6 of described cored bar 5 by leading section joint 15 constitute with rear end plug 5, the internal diameter assembling of its diameter and workpiece 9 conforms to.
During work, described diameter mould 4, clamping 3, pattern 2, wrinkle resistant mould 7 and all be arranged on the pushing tow dolly 8 of eight pawl clampings 1 on the relevant position of three-dimensional numerical control pipe bender of band hydraulic pressure and servo motor driven mechanism; The reviving joints 6 of described cored bar 5 is placed in the chamber of workpiece 9, and its leading section joint is positioned at workpiece treats on the crooked position, and its tail end plug 5 is positioned at the tube chamber at place, workpiece 9 crooked point of contact; Limited impression 10 on described pattern 2 working faces is close to and is arranged on workpiece 9 by holder and treats that closely the knee leans on the tube wall of tail end one side; Described clamping 3 adjacent pattern 2 clampings are arranged on workpiece 9 and treat on the tube wall of forward end one side in knee; Described diameter mould 4 and clamping be 3 corresponding, be clamped in workpiece treats on the tube wall in knee; The subtask face 14 of described wrinkle resistant mould 7 and the R sigmoid leading section 11 of diameter mould 4 be complementary applying, its main working face 13 and pattern 2 corresponding being arranged on the workpiece tube wall.When the three-dimensional numerical control pipe bender startup execution bend pipe operation of band hydraulic pressure and servo motor driven mechanism, when clamping 3 is applied axial bending power, workpiece 9 treats that the knee is slowly crooked along the main working face of diameter mould 4, pushing tow dolly 8 is along the axial direction boosting of workpiece 9 simultaneously, make workpiece 9 under the guiding of pattern 2 gradually the reach and along diameter mould 4 bendings, reach required angle at last, because the inner support of the reviving joints 6 of inner cored bar 5 and wrinkle resistant mould 7 slow pushes away effect, the crooked position of workpiece 9 situation flat and depression of can not collapsing.
In Fig. 4, the technological process of the processing method of bent pipe with small R of the present invention is as follows:
(1) gets the raw materials ready: scale blanking workpiece as requested;
(2) selection tool: select the shaping bend pipe mould and the auxiliary that conform to the workpiece size specification for use;
(3) instrument is gone into the position: install on the three-dimensional numerical control pipe bender of band hydraulic pressure and servo motor driven mechanism selected shaping bend pipe mould and pushing tow dolly 8 are set;
(4) workpiece location: workpiece one end clamped the reviving joints 6 that inserts cored bar 5 in the eight pawl clampings 1 that are arranged on pushing tow dolly 8, in workpiece 9 tube chambers, workpiece 9 is stretched in the die cavity of putting at bend pipe mould, place wrinkle resistant mould 7 simultaneously;
(5) startup bending machine, workpiece 9 are gone into the position: start three-dimensional numerical control pipe bender, die cavity clamping 3 on the bending machine is clamped in workpiece 9 on the bend pipe mould, simultaneously the leading section joint 15 of the reviving joints 6 of cored bar 5 arrive place, crooked starting point point of contact, pattern 2 be close on workpiece 9 outer surfaces, the inner surface of workpiece 9 is close on wrinkle resistant mould 7 and diameter mould 4;
(6) implement bend pipe: by clamping 3 tractions, workpiece 9 is applied crooked power (axially bending), servo motor mechanism accurately controls angle of bend, frictional force between pattern 2 utilizations simultaneously and workpiece 9 surfaces is assisted and is pushed away, servo motor control pushing tow dolly 8 applies boosting power (along the workpiece axial direction) at workpiece 9 tail ends, workpiece 9 heaps are advanced bending area, replenish with the material that fully satisfies workpiece 9 bending sections, the inboard unnecessary material of 7 pairs of bending sections of wrinkle resistant mould compresses simultaneously, thickened wall, prevent that workpiece 9 is inboard wrinkling, the reviving joints 6 of workpiece 9 inner cored bars 5 props up the inwall of workpiece 9 in inside, prevent that workpiece 9 inwalls from too subsiding;
(7) bend pipe finishes: after angle of bend put in place, the reviving joints 6 of cored bar 5 oppositely retreated, workpiece 9 internal diameters is carried out full circle, and the part of simultaneously part being subsided flattens, and eliminates subsiding of workpiece 9 inwalls;
(8) quality examination provides qualified finished product.
Claims (9)
1. the processing unit (plant) of a bent pipe with small R, the three-dimensional numerical control pipe bender, shaping bend pipe mould and the auxiliary that include band hydraulic pressure and servo motor driven mechanism, it is characterized in that: include eight pawl clampings (1), pattern (2), clamping (3) and diameter mould (4) in the bend pipe mould, include the reviving joints (6) of cored bar (5), wrinkle resistant mould (7) and pushing tow dolly (8) in the auxiliary, wherein:
A. described diameter mould 4 is the R shape, its side by the continuous edge that the edge of the edge of evagination semicircle R sigmoid leading section (11) and both sides rake (12) constitutes is provided with the semi arch noodles shape limited impression (10) that conforms to the external diameter of workpiece (9), and the radius of its evagination semicircle shape bent front ends portion (11) conforms to the radius of curvature R that workpiece () 9 requirements are processed;
B. described pattern (2) is provided with the semi arch face length strip limited impression (10) that conforms to workpiece (9) external diameter;
The working face of c. described clamping (3) is provided with the semi arch noodles shape limited impression (10) that conforms to the external diameter of workpiece (9);
D. described wrinkle resistant mould (7) is flat except that having an edge, being provided with outer edge that also has an evagination semicircle R sigmoid leading section (11) on a shape and the diameter mould (4) of the main working face (13) of the semi arch noodles shape limited impression (10) that conforms to the external diameter of workpiece (9) and side view thereof above assembles and conforms to, and the subtask face (14) that the tangent position on evagination semicircle R sigmoid leading section (11) edge under the two coupling is joined state on the vertical bar shape edge of main working face (13) and the diameter mould (4) coincides;
E. described eight pawl clampings (1) are arranged on the pushing tow dolly (8);
The reviving joints (6) of f. described cored bar (5) is made of with rear end plug (5) leading section joint (15), its diameter conforms to the internal diameter assembling of workpiece (9).
2. the processing unit (plant) of bent pipe with small R according to claim 1 is characterized in that described diameter mould (4), clamping (3), pattern (2), wrinkle resistant mould (7) and all is arranged on the three-dimensional numerical control pipe bender of band hydraulic pressure and servo motor driven mechanism with the pushing tow dolly (8) of eight pawl clampings (1).
3. the processing unit (plant) of bent pipe with small R according to claim 1, the reviving joints (6) that it is characterized in that described cored bar (5) is placed in the chamber of workpiece (9), its leading section joint is positioned at workpiece treats on the crooked position, and its tail end plug (5) is positioned at the tube chamber at place, the crooked point of contact of workpiece (9).
4. the processing unit (plant) of bent pipe with small R according to claim 1 is characterized in that limited impression (10) on described pattern (2) working face is close to be arranged on workpiece (9) by holder and to treat that closely the knee leans on the tube wall of tail end one side.
5. the processing unit (plant) of bent pipe with small R according to claim 1 is characterized in that the adjacent pattern of described clamping (3) (2) clamping is arranged on workpiece (9) and treats on the tube wall of forward end one side in knee.
6. the processing unit (plant) of bent pipe with small R according to claim 1 is characterized in that described diameter mould (4) is corresponding with clamping (3), be clamped in workpiece to treat on the tube wall in knee.
7. the processing unit (plant) of bent pipe with small R according to claim 1, the subtask face (14) that it is characterized in that described wrinkle resistant mould (7) and the R sigmoid leading section (11) of diameter mould (4) be complementary applying, its main working face (13) and pattern (2) is corresponding is arranged on the workpiece tube wall.
8. the processing unit (plant) of bent pipe with small R according to claim 1, the three-dimensional numerical control pipe bender that it is characterized in that described band hydraulic pressure and servo motor driven mechanism start to carry out the bend pipe operation, when clamping (3) is applied axial bending power, workpiece (9) treats that the knee is slowly crooked along the main working face of diameter mould (4), pushing tow dolly (8) is along the axial direction boosting of workpiece (9) simultaneously, make workpiece (9) under the guiding of pattern (2) gradually the reach and along diameter mould (4) bending, reach required angle at last.
9. the processing method of a bent pipe with small R is characterized in that technological process is as follows:
(1) gets the raw materials ready: scale blanking workpiece as requested;
(2) selection tool: select the shaping bend pipe mould and the auxiliary that conform to the workpiece size specification for use;
(3) instrument is gone into the position: install on the three-dimensional numerical control pipe bender of band hydraulic pressure and servo motor driven mechanism selected shaping bend pipe mould and pushing tow dolly (8) are set;
(4) workpiece location: workpiece one end is clamped the eight pawl clampings (1) that are arranged on pushing tow dolly (8) go up, in workpiece (9) tube chamber, insert the reviving joints (6) of cored bar (5), workpiece (9) is stretched in the die cavity of putting at bend pipe mould, place wrinkle resistant mould (7) simultaneously;
(5) startup bending machine, workpiece (9) are gone into the position: start three-dimensional numerical control pipe bender, die cavity clamping (3) on the bending machine is clamped in workpiece (9) on the bend pipe mould, simultaneously the leading section joint (15) of the reviving joints (6) of cored bar (5) arrive place, crooked starting point point of contact, pattern (2) be close on workpiece (9) outer surface, the inner surface of workpiece (9) is close on wrinkle resistant mould (7) and diameter mould (4);
(6) implement bend pipe: draw by clamping (3), workpiece (9) is applied axial bending power, servo motor mechanism accurately controls angle of bend, frictional force between pattern (2) utilization simultaneously and workpiece (9) surface is assisted and is pushed away, servo motor control pushing tow dolly (8) applies along workpiece spindle to boosting power at workpiece (9) tail end, workpiece (9) heap is advanced bending area, replenish with the material that fully satisfies workpiece (9) bending section, wrinkle resistant mould (7) compresses the inboard unnecessary material of bending section simultaneously, thickened wall, prevent that workpiece (9) is inboard wrinkling, the reviving joints (6) of the inner cored bar of workpiece (9) (5) props up the inwall of workpiece (9) in inside, prevent that workpiece (9) inwall from too subsiding;
(7) bend pipe finishes: after angle of bend put in place, the reviving joints (6) of cored bar (5) oppositely retreated, workpiece (9) internal diameter is carried out full circle, and the part of simultaneously part being subsided flattens, and eliminates subsiding of workpiece (9) inwall;
(8) quality examination provides qualified finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710040527 CN101049618A (en) | 2007-05-11 | 2007-05-11 | Method and equipment for machining bent pipe with small R |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710040527 CN101049618A (en) | 2007-05-11 | 2007-05-11 | Method and equipment for machining bent pipe with small R |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101049618A true CN101049618A (en) | 2007-10-10 |
Family
ID=38781334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710040527 Pending CN101049618A (en) | 2007-05-11 | 2007-05-11 | Method and equipment for machining bent pipe with small R |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101049618A (en) |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947242A (en) * | 2010-09-26 | 2011-01-19 | 武汉华龙生物制药有限公司 | Preparation method of deproteinized calf blood extract |
| CN102825137A (en) * | 2012-08-22 | 2012-12-19 | 合肥科烨电物理设备制造有限公司 | R bending mold for bending high-strength superconductors |
| CN103273275A (en) * | 2013-06-13 | 2013-09-04 | 沈阳飞机工业（集团）有限公司 | Numerical control machining method of bending pipe die free of benchmark |
| CN103357690A (en) * | 2013-07-19 | 2013-10-23 | 南通农业职业技术学院 | Processing method for small R extrusion finishing elbow |
| CN103586348A (en) * | 2013-11-15 | 2014-02-19 | 青岛鸿森重工有限公司 | Material embracing type bend concave-convex die |
| CN105149389A (en) * | 2015-07-29 | 2015-12-16 | 杭州和良机电设备有限公司 | Bent pipe, bent pipe machining equipment, bent pipe machining method and control method |
| CN105945161A (en) * | 2016-06-15 | 2016-09-21 | 沈阳飞机工业（集团）有限公司 | Deformation-preventing machining method for lathy elbow pipe mold tire |
| CN107030981A (en) * | 2015-08-03 | 2017-08-11 | 芜湖瑞德机械科技有限公司 | A kind of mould and application method for being molded hollow tube |
| CN107282722A (en) * | 2017-07-03 | 2017-10-24 | 杭州和良机电设备有限公司 | The small R forming methods of tubing bend pipe and pipe end forming machine |
| CN107855385A (en) * | 2017-12-14 | 2018-03-30 | 中山精达特克机械有限公司 | A kind of U-tube bending mechanism |
| CN108607911A (en) * | 2018-03-06 | 2018-10-02 | 江苏沃能电气科技有限公司 | A kind of cold pressing elbow pipe processing technology |
| CN109158487A (en) * | 2018-09-17 | 2019-01-08 | 上海酷风汽车部件有限公司 | A kind of connection structure and bend pipe mould |
| CN109570291A (en) * | 2018-12-01 | 2019-04-05 | 江苏汉东机械有限公司 | A kind of tube bending jig of hydraulic numerical control bending machine |
| CN110756631A (en) * | 2019-11-22 | 2020-02-07 | 保隆(安徽)汽车配件有限公司 | Elbow core mold for elbow with variable section perimeter and elbow device |
| CN110756632A (en) * | 2018-07-25 | 2020-02-07 | 丛华 | Straight pipe elbow cold forming equipment with combined mold core structure |
| CN110893427A (en) * | 2019-12-23 | 2020-03-20 | 江苏金鑫电器有限公司 | Bending tool for spiral welded pipe |
| CN113523049A (en) * | 2020-04-13 | 2021-10-22 | 双叶产业株式会社 | Bent pipe manufacturing device and bent pipe manufacturing method |
| CN114682663A (en) * | 2022-04-06 | 2022-07-01 | 江苏耀坤液压股份有限公司 | Bending assembly for bending part cavity curvature of hydraulic oil pipe close to theoretical circle |
| CN115255076A (en) * | 2022-09-23 | 2022-11-01 | 南通尚坤机电有限公司 | Bending equipment for thin-wall metal pipe |
| CN117644140A (en) * | 2024-01-29 | 2024-03-05 | 沧州恒鑫高压管件有限公司 | High-pressure-resistant elbow forming device and forming process for thermal power station |
| CN110893427B (en) * | 2019-12-23 | 2024-04-26 | 江苏金鑫电器有限公司 | Bending tool for spiral welded pipe |
-
2007
- 2007-05-11 CN CN 200710040527 patent/CN101049618A/en active Pending
Cited By (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947242B (en) * | 2010-09-26 | 2012-05-23 | 武汉华龙生物制药有限公司 | Preparation method of deproteinized calf blood extract |
| CN101947242A (en) * | 2010-09-26 | 2011-01-19 | 武汉华龙生物制药有限公司 | Preparation method of deproteinized calf blood extract |
| CN102825137A (en) * | 2012-08-22 | 2012-12-19 | 合肥科烨电物理设备制造有限公司 | R bending mold for bending high-strength superconductors |
| CN102825137B (en) * | 2012-08-22 | 2015-08-26 | 合肥科烨电物理设备制造有限公司 | A kind of R bending mould of bending high strength superconducting conductor |
| CN103273275A (en) * | 2013-06-13 | 2013-09-04 | 沈阳飞机工业（集团）有限公司 | Numerical control machining method of bending pipe die free of benchmark |
| CN103357690A (en) * | 2013-07-19 | 2013-10-23 | 南通农业职业技术学院 | Processing method for small R extrusion finishing elbow |
| CN103586348A (en) * | 2013-11-15 | 2014-02-19 | 青岛鸿森重工有限公司 | Material embracing type bend concave-convex die |
| CN105149389B (en) * | 2015-07-29 | 2017-12-15 | 浙江和良智能装备有限公司 | Bent pipe, bent pipe machining equipment, bent pipe machining method and control method |
| CN105149389A (en) * | 2015-07-29 | 2015-12-16 | 杭州和良机电设备有限公司 | Bent pipe, bent pipe machining equipment, bent pipe machining method and control method |
| CN107030981A (en) * | 2015-08-03 | 2017-08-11 | 芜湖瑞德机械科技有限公司 | A kind of mould and application method for being molded hollow tube |
| CN105945161A (en) * | 2016-06-15 | 2016-09-21 | 沈阳飞机工业（集团）有限公司 | Deformation-preventing machining method for lathy elbow pipe mold tire |
| CN107282722A (en) * | 2017-07-03 | 2017-10-24 | 杭州和良机电设备有限公司 | The small R forming methods of tubing bend pipe and pipe end forming machine |
| CN107282722B (en) * | 2017-07-03 | 2023-09-26 | 浙江长兴和良智能装备有限公司 | Small R forming method for pipe bent pipe and pipe end forming machine |
| CN107855385A (en) * | 2017-12-14 | 2018-03-30 | 中山精达特克机械有限公司 | A kind of U-tube bending mechanism |
| CN108607911A (en) * | 2018-03-06 | 2018-10-02 | 江苏沃能电气科技有限公司 | A kind of cold pressing elbow pipe processing technology |
| CN108607911B (en) * | 2018-03-06 | 2019-10-22 | 江苏沃能电气科技有限公司 | A kind of cold pressing elbow pipe processing technology |
| CN110756632A (en) * | 2018-07-25 | 2020-02-07 | 丛华 | Straight pipe elbow cold forming equipment with combined mold core structure |
| CN110756632B (en) * | 2018-07-25 | 2024-04-12 | 丛华 | Cold forming equipment with combined mold core structure and straight pipe elbow |
| CN109158487A (en) * | 2018-09-17 | 2019-01-08 | 上海酷风汽车部件有限公司 | A kind of connection structure and bend pipe mould |
| CN109570291A (en) * | 2018-12-01 | 2019-04-05 | 江苏汉东机械有限公司 | A kind of tube bending jig of hydraulic numerical control bending machine |
| CN110756631B (en) * | 2019-11-22 | 2021-06-22 | 保隆(安徽)汽车配件有限公司 | Elbow core mold for elbow with variable section perimeter and elbow device |
| CN110756631A (en) * | 2019-11-22 | 2020-02-07 | 保隆(安徽)汽车配件有限公司 | Elbow core mold for elbow with variable section perimeter and elbow device |
| CN110893427A (en) * | 2019-12-23 | 2020-03-20 | 江苏金鑫电器有限公司 | Bending tool for spiral welded pipe |
| CN110893427B (en) * | 2019-12-23 | 2024-04-26 | 江苏金鑫电器有限公司 | Bending tool for spiral welded pipe |
| CN113523049A (en) * | 2020-04-13 | 2021-10-22 | 双叶产业株式会社 | Bent pipe manufacturing device and bent pipe manufacturing method |
| CN113523049B (en) * | 2020-04-13 | 2023-08-25 | 双叶产业株式会社 | Bent pipe manufacturing device and bent pipe manufacturing method |
| CN114682663A (en) * | 2022-04-06 | 2022-07-01 | 江苏耀坤液压股份有限公司 | Bending assembly for bending part cavity curvature of hydraulic oil pipe close to theoretical circle |
| CN114682663B (en) * | 2022-04-06 | 2023-08-25 | 江苏耀坤液压股份有限公司 | Bending assembly with curvature of bending part cavity of hydraulic oil pipe close to theoretical circle |
| CN115255076A (en) * | 2022-09-23 | 2022-11-01 | 南通尚坤机电有限公司 | Bending equipment for thin-wall metal pipe |
| CN117644140A (en) * | 2024-01-29 | 2024-03-05 | 沧州恒鑫高压管件有限公司 | High-pressure-resistant elbow forming device and forming process for thermal power station |
| CN117644140B (en) * | 2024-01-29 | 2024-04-05 | 沧州恒鑫高压管件有限公司 | High-pressure-resistant elbow forming device and forming process for thermal power station |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101049618A (en) | Method and equipment for machining bent pipe with small R | |
| CN101754821B (en) | Method for hydroforming | |
| CN101934314B (en) | Pipe bending device capable of bending left and right in pipe bending machine | |
| CN203972513U (en) | A kind of threaded steel pipe automatic coiled pipe shaping machine set | |
| CN103753118A (en) | Bending method of large-diameter thin-wall aluminum pipe and die | |
| CN101722225A (en) | Novel hydraulic bulging process for tubular parts | |
| CN101704044A (en) | Rectangular thin walled tube stock tracking deformation bending mould | |
| JP2010005697A (en) | Pipe bending method and pipe bending device | |
| CN105149389B (en) | Bent pipe, bent pipe machining equipment, bent pipe machining method and control method | |
| CN2860654Y (en) | Fixture for coil pipe pipe | |
| CN103056221B (en) | Flexible bending tube die of ball-and-socket joint structure | |
| CN2928301Y (en) | Mold group device for pipe bender | |
| GB2105621A (en) | A method of producing a corrugated multi-ply metal bellows | |
| CN213256517U (en) | Large-diameter thin-walled pipe liquid-filling bending forming device | |
| CN102407255A (en) | Production method of transition bridge bent tube of heavy-duty truck | |
| CN201799528U (en) | Die of hydraulic pipe bender | |
| CN108620466B (en) | Double-layer pipe numerical control bending die and forming method thereof | |
| CN101096040A (en) | Die set for pipe bending machine | |
| CN102513425B (en) | Method for bending large-diameter U-shaped pipe with helix angle | |
| CN201552220U (en) | Deformation-tracking bending die for rectangular thin-wall tube | |
| CN2049565U (en) | Small bending radius u form pipe bender | |
| CN202951744U (en) | Pipe fitting boosting device for pipe bender | |
| TW201249561A (en) | Strip bending and forming process machine | |
| CN207668243U (en) | A kind of processing unit (plant) of minor radius bending pipe fitting | |
| CN102641917A (en) | Round setting technique for pipe end of large-size pipe fitting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |