CN101259502B - Hydraulic bulging processing device and hydraulic bulging processing method - Google Patents
Hydraulic bulging processing device and hydraulic bulging processing method Download PDFInfo
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- CN101259502B CN101259502B CN2008100854711A CN200810085471A CN101259502B CN 101259502 B CN101259502 B CN 101259502B CN 2008100854711 A CN2008100854711 A CN 2008100854711A CN 200810085471 A CN200810085471 A CN 200810085471A CN 101259502 B CN101259502 B CN 101259502B
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- 238000012545 processing Methods 0.000 title claims abstract description 244
- 238000003672 processing method Methods 0.000 title claims abstract description 23
- 239000002184 metal Substances 0.000 claims description 233
- 238000007789 sealing Methods 0.000 claims description 101
- 239000012530 fluid Substances 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 description 15
- 230000015572 biosynthetic process Effects 0.000 description 13
- 238000007493 shaping process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000003754 machining Methods 0.000 description 5
- 210000002268 wool Anatomy 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
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Abstract
An allotype capillary used for hydraulic expansion processing of the invention is provided with a perimeter with the outer diameter gradually increasing or reducing from one end to the other end in the axial direction and at least an increased maintaining part of the perimeter which is at an end side and is composed of a tube which faces the end side; besides, a parallel part can be formed at the end side which does not form the maintaining part; in the processing device and the processing method of adopting the allotype capillary, a pushing processing can be carried out in the axial direction from the capillary end even under the condition of adopting the allotype capillary with a greatly changed axial section shape; therefore, in the hydraulic expansion processing product which is applied with the hydraulic expansion processing, a larger capillary expanding rate exceeding the current capillary expanding rate can be obtained.
Description
The application is that application number is 200480040548.3, the applying date is that January 21, denomination of invention in 2004 are that special-shaped hollow billet is used in hydraulic expanding-forming processing; With the hydraulic expanding-forming processing unit (plant) that uses it; Hydraulic expanding-forming processing method, and the dividing an application of the application for a patent for invention of hydraulic expanding-forming processed goods.
Technical field
The present invention relates to supply in the special-shaped hollow billet of hydraulic expanding-forming processing and the hydraulic expanding-forming processing unit (plant) that uses this special-shaped hollow billet to carry out hydraulic expanding-forming processing, the hydraulic expanding-forming processing method, and implemented the hydraulic expanding-forming processed goods that hydraulic expanding-forming is processed.
Background technology
Hydraulic expanding-forming processing is compared with other forming and machining method, has a large amount of advantages.For example, in order to be processed into the part of shape that has the complicacy of different cross sectional shapes at length direction, in existing method, can the machine components that need solder joints be processed by integrally formed.In addition, because adding trade union, this make the integral body that runs through the position that has applied processing produce work hardening, so, also can access high-intensity goods even adopt soft hollow billet.
In addition, the resilience after the processing is few, the dimensional accuracy of goods good (shape freezing property is good).For this reason, need not the finishing process of product size, can realize simplifying of operation.
Above-mentioned excellent characteristics are estimated in hydraulic expanding-forming processing, recently, particularly are used as the manufacturing approach of automobile with part.
Fig. 1 is the figure of the hydraulic expanding-forming processing of the existing use straight tube of explanation, (a) cross section structure before the processing of expression hydraulic expanding-forming, (b) cross section structure after the processing of expression hydraulic expanding-forming.
Used the hydraulic expanding-forming processing of general straight tube; Shown in Fig. 1 (a); Be through injecting working fluid among the hollow billet P1 of hand-hole 3 in being arranged at pair of metal mould 1,2 up and down, remove the pressure that improves working fluid (below be called " interior pressure "), utilization has a pusher (below be called " sealing tool ") 4,5 of sealing tool concurrently again; Axially carry out extrusion process from two pipe ends, making the processed goods P2 that for example has section morphology shown in Fig. 1 (b) thus.
Add man-hour at this hydraulic expanding-forming, sealing tool 4,5 is connected to not shown hydraulic cylinder, control axial location or axle pushing force in hydraulic expanding-forming processing.
In the processing of such hydraulic expanding-forming, from the axle pushing processing of pipe end, can be described as the metal flow in order to promote to swell to axial action, the epochmaking worker who improves the expander limit adds.
That is, in the processing of this hydraulic expanding-forming, do not implement axle pushing processing, only press in the state load with the fixing axial location at hollow billet both ends simply from pipe end, thus the protuberance of respective material, and thickness of slab significantly reduces.For this reason, cause in the way in hydraulic expanding-forming processing and break, shapable scope (expander limit) is restricted.
In addition, in hydraulic expanding-forming processing, also has the problem that causes by the hollow billet shape.As previously mentioned, an advantage as this processing is the machining shape that can access the variform complicacy of axial cross section, but for the machining shape that can access restriction is arranged also.
For example; When being defined as girth increment rate (pipe expanding rate)={ during (circumference of the outer perimeter/hollow billet of the processed goods at this position)-1} * 100%; Though also will be according to the hollow billet condition (material, thickness of slab) of desired style characteristic of processed goods and use; But, except axle pushes effective tube end zone, girth increment rate (pipe expanding rate) is at most about 25%.
That is,, obtain to have the goods of more complicated cross sectional shape arbitrarily, also need develop again in order to improve the shape of products degree of freedom in design.
For corresponding this problem, and propose to adopt roughly cone shape hollow billet (below be called " taper hollow billet ") to substitute the broad wool pipe, this taper hollow billet has the girth that increases gradually or reduce from axial end to end external diameter.
Specifically, through adopting the taper hollow billet, even for the part that utilizes broad wool pipe shaping difficulty; For example; The part that very big perimeter change is arranged vertically also can suppress the girth increment rate of following processing very low, and the machining shape that can form regulation (for example; Open the 2001-321842 communique with reference to the spy, the 1st page, the 2nd page).
Yet the taper hollow billet of employing axial cross section change in shape carries out hydraulic expanding-forming and adds man-hour, if use the said effective sealing tool of broad wool shown in Figure 1, it is just very difficult that the taper hollow billet is implemented the axle pushing.
Fig. 2 is the figure of explanation problem of generation when with the effective axle of existing broad wool pusher the taper hollow billet being carried out the axle pushing.Shown in figure, in the bigger diameter end side, itself can not carry out the axle pushing to taper hollow billet TP1; In addition, distolateral at path, can carry out the axle pushing to taper hollow billet TP1; But along with the axle pushing, axle pusher 4 enters into the inside of metal pattern 1,2 up and down, and the thing followed is; The contained of interior outside of the taper hollow billet TP1 of axle pusher 4 sides becomes insufficient, and sealing leak is taken place.
Fig. 3 is the figure that the hydraulic expanding-forming manufacturing procedure of existing taper hollow billet has been adopted in explanation; (a) expression is provided with as the cross section structure before the processing of the taper hollow billet of parent material; (b) cross section structure of special-shaped hollow billet before hydraulic expanding-forming processing of expression shaping hydraulic expanding-forming processing usefulness, the cross section structure when (c) representing process finishing.
In the hydraulic expanding-forming processing of having adopted existing taper hollow billet TP1, produce shown in 3 like figure, the sealing tool 6,7 of leading section use taper, but because can not implement the axle pushing, so generally only with interior pressure load hydraulic expanding-forming is machined.Also have, the taper hollow billet after the tube end of having represented to be shaped of the TP2 among Fig. 3, TP3 representes the goods (hydraulic expanding-forming processed goods) after the hydraulic expanding-forming processing.
In hydraulic expanding-forming manufacturing procedure shown in Figure 3, because can not implement the axle pushing of taper hollow billet TP2, so as previously mentioned, can only be in stage of hydraulic expanding-forming processing in the shaping scope processing of degree that can not produce being defined of fracture.Therefore, in hydraulic expanding-forming processing, have and to give full play to the actual conditions that adopt the effect that the taper hollow billet brings.
For this reason, adopt the taper hollow billet to carry out hydraulic expanding-forming and add man-hour, except the interior pressure load to hollow billet, also expectation can be from pipe end to the technological development of axially carrying out the axle pushing.
Summary of the invention
The object of the invention is that point provides a kind of hydraulic expanding-forming processing to use special-shaped hollow billet in view of the above-mentioned problems; With the hydraulic expanding-forming processing unit (plant) that uses it, hydraulic expanding-forming processing method, and hydraulic expanding-forming processed goods; Even it is axially having that cross sectional shape changes, for example, the hydraulic expanding-forming of conical pipe adds man-hour, except the interior pressure load to hollow billet; Can also can access big pipe expanding rate from pipe end to axially carrying out the axle pushing.
The present invention is in order to reach above-mentioned purpose, and its main idea is described below:
(1) special-shaped hollow billet is used in hydraulic expanding-forming processing; (2) hydraulic expanding-forming processing unit (plant);
(3) hydraulic expanding-forming processing method; (4) hydraulic expanding-forming processed goods.
(1) special-shaped hollow billet is used in a kind of hydraulic expanding-forming processing, supplies to it is characterized in that in hydraulic expanding-forming processing; Have from axial end to end the girth that external diameter increases gradually or reduces, at least at one end side; Towards this distolateral pipe end face, formed the maintaining part that said girth increases.
But,,,, bigger than the girth increase ratio of hollow billet main part in the girth increase ratio of this maintaining part in order to ensure sealing when when the bigger diameter end side forms said maintaining part.
In addition, when not forming said maintaining part with the processing of above-mentioned hydraulic expanding-forming at two ends with special-shaped hollow billet, this is one distolateral but be formed at, but is not formed at another when distolateral, preferably in another distolateral formation parallel portion.This is because from forming the distolateral of parallel portion, also can carry out the axle pushing with easy structure.In addition, through forming parallel portion, can improve the sealing of end.
(2) be a kind of hydraulic expanding-forming processing unit (plant) that constitutes by following " first～the 4th processing unit (plant) ".What as previously mentioned, " sealing tool " meaning was to use is the axle pusher that has sealing tool concurrently.
" first processing unit (plant) ", as after Fig. 5, shown in Figure 6 of stating, be a kind of hydraulic expanding-forming processing unit (plant), it uses side at least at one end to form the special-shaped hollow billet of maintaining part, one distolaterally carries out axle pushing and processes from this, it is characterized in that having: pair of metal mould main body; A pair of pipe end keeps metal pattern, and it is one distolateral that it is disposed at this of this metal pattern main body; Sealing tool, this distolateral end that it keeps metal pattern to keep special-shaped hollow billet for pipe end therewith, and leading section is inserted into pipe end and keeps metal pattern; Sealing tool, its this another distolateral end in order to keep special-shaped hollow billet with the metal pattern main body, and leading section is inserted into said metal pattern main body; Elastic component, it is located at the metal pattern main body and pipe end keeps between the metal pattern, at least after the injection of working fluid; Keep metal pattern to said pipe end; Apply the thrust (thrust) relative with the end of metal pattern main body, any of sealing tool all is provided with the hand-hole of working fluid, in hydraulic expanding-forming processing; Along with the sealing tool of this distolateral end that keeps special-shaped hollow billet to axial moving, said pipe end keeps metal pattern to resist the thrust of said elastic component and move.
" second processing unit (plant) ", as after Fig. 8, shown in Figure 9 of stating, be a kind of hydraulic expanding-forming processing unit (plant); It uses the maintaining part of side formation at one end, at the special-shaped hollow billet of another distolateral formation parallel portion, pushes processing from this distolateral axle that carries out at least; It is characterized in that; In the structure that above-mentioned " first processing unit (plant) " adopts, on pair of metal mould main body, parallel portion is set in this another distolateral inner end portion corresponding with the parallel portion of special-shaped hollow billet; In addition; Leading section inserts in the sealing tool of metal pattern main body, and this another the distolateral end for the parallel portion with the metal pattern main body keeps special-shaped hollow billet is provided with parallel portion in the outside corresponding with the parallel portion of said special-shaped hollow billet.
In " second processing unit (plant) ", through adopting above-mentioned structure, also can carry out axle pushing from another of special-shaped hollow billet is distolateral.In addition, when not carrying out the axle pushing,, sealing is improved through forming parallel portion in another distolateral end.
" the 3rd processing unit (plant) "; As after state shown in Figure 10, be a kind of hydraulic expanding-forming processing unit (plant), it uses the special-shaped hollow billet that forms maintaining part in both end sides; Carry out axle pushing processing from both end sides; It is characterized in that at these distolateral and this another distolateral both ends of the special-shaped hollow billet of metal pattern main body, have respectively: a pair of pipe end keeps metal pattern; Sealing tool; Elastic component with applied thrust.
In above-mentioned " first processing unit (plant) ", one distolaterally have a pair of pipe end and keep metal pattern, sealing tool at this of metal pattern main body; With the elastic component of applied thrust, with respect to this, in " the 3rd processing unit (plant) "; Both end sides in the metal pattern main body has same structure, and this point is different.
" the 4th processing unit (plant) "; As after state shown in Figure 11; Be the embodiment of " first～the 3rd processing unit (plant) ", it is characterized in that, keeping to a pair of pipe end between the said elastic component and pair of metal mould main body of metal pattern applied thrust; Dispose the elastic component that keeps metal pattern in the middle of at least one group a pair of and this is kept the metal pattern applied thrust in the middle of a pair of successively.
(3) be a kind of hydraulic expanding-forming processing method; It is characterized in that; Special-shaped hollow billet with above-mentioned (1) record; After being arranged in the metal pattern of any hydraulic expanding-forming processing unit (plant) of above-mentioned " first～the 4th processing unit (plant) ", said special-shaped hollow billet is implemented to press in the combination hydraulic expanding-forming processing of load and axle pushing.
In addition; It is a kind of hydraulic expanding-forming processing method; It is characterized in that, adopt any one the hydraulic expanding-forming processing unit (plant) of above-mentioned " first～the 4th processing unit (plant) ", make after the special-shaped hollow billet of above-mentioned (1) record; To said special-shaped hollow billet, implement to press in the combination hydraulic expanding-forming processing of load and axle pushing.
(4) be a kind of hydraulic expanding-forming processed goods; It is characterized in that; It is arranged in the metal pattern of any hydraulic expanding-forming processing unit (plant) of above-mentioned " first～the 4th processing unit (plant) " through the special-shaped hollow billet with above-mentioned (1) record, presses the load and the hydraulic expanding-forming of axle pushing to process shape in the combination.
In addition; It is a kind of hydraulic expanding-forming processed goods; It is characterized in that; In the metal pattern of its any hydraulic expanding-forming processing unit (plant) through " simple conical pipe " being arranged at above-mentioned " first～the 4th processing unit (plant) ", made after the special-shaped hollow billet of above-mentioned (1) record, pressed the load and the hydraulic expanding-forming of axle pushing to process shape in the combination.
Description of drawings
Fig. 1 is the figure that the hydraulic expanding-forming processing of existing straight tube is used in explanation, (a) cross section structure before the processing of expression hydraulic expanding-forming, (b) cross section structure after the processing of expression hydraulic expanding-forming.
Fig. 2 is that explanation is with the effective axle of existing broad wool pusher, the figure of the problem that produces when the taper hollow billet is carried out the axle pushing.
Fig. 3 is the figure that the hydraulic expanding-forming manufacturing procedure of existing taper hollow billet has been adopted in explanation; (a) expression is provided with as the cross section structure before the processing of the taper hollow billet of parent material; (b) cross section structure of special-shaped hollow billet before hydraulic expanding-forming processing of expression shaping hydraulic expanding-forming processing usefulness, the cross section structure when (c) representing process finishing.
Fig. 4 is the figure of expression hydraulic expanding-forming processing of the present invention with the shape of special-shaped hollow billet.
Fig. 5 is that explanation is as hydraulic expanding-forming processing unit (plant) of the present invention; The figure of the structure of " first processing unit (plant) "; (a) cross section structure before the hydraulic expanding-forming processing of the special-shaped hollow billet of expression shaping; (b) cross section structure after the processing of expression hydraulic expanding-forming, (c) structure of the path distolateral (left surface) before the processing of expression hydraulic expanding-forming.
Fig. 6 be explanation as hydraulic expanding-forming processing unit (plant) of the present invention, the figure of the structure of other of " first processing unit (plant) ", (a) the expression cross section structure before the hydraulic expanding-forming processing of special-shaped hollow billet that is shaped, (b) cross section structure after the processing of expression hydraulic expanding-forming.
Fig. 7 is that expression will be as " the simple conical pipe " of parent material, the figure of the cross section structure of the state that is provided with to the metal pattern main body.
Fig. 8 is that explanation is as hydraulic expanding-forming processing unit (plant) of the present invention; The figure of the structure of " second processing unit (plant) "; (a) the expression shaping has the preceding cross section structure of hydraulic expanding-forming processing of the special-shaped hollow billet of maintaining part and parallel portion, (b) cross section structure after the expression hydraulic expanding-forming process finishing.
Fig. 9 be explanation as hydraulic expanding-forming processing unit (plant) of the present invention, " second processing unit (plant) " other figure of structure, (a) the expression cross section structure before the hydraulic expanding-forming processing of special-shaped hollow billet that is shaped, (b) cross section structure after the expression hydraulic expanding-forming process finishing.
Figure 10 be explanation as hydraulic expanding-forming processing unit (plant) of the present invention, " the 3rd processing unit (plant) " other figure of structure.
Figure 11 be explanation as hydraulic expanding-forming processing unit (plant) of the present invention, " the 4th processing unit (plant) " other figure of structure.
The specific embodiment
Fig. 4 is the figure of expression hydraulic expanding-forming processing of the present invention with the shape of special-shaped hollow billet.Hydraulic expanding-forming processing of the present invention is with special-shaped hollow billet TP2; It is the special-shaped hollow billet that supplies in hydraulic expanding-forming processing usefulness; Shown in (a)～(f); It constitutes: have the girth that increases gradually or reduce from axial end to end, at least at one end side has formed the maintaining part that said all shapes increase towards this pipe end face.
At Fig. 4 (a) with in the example of shape (b), distolateral or bigger diameter end side is provided with maintaining part TP2a, TP2b at path, in another distolateral maintaining part that is not provided with.At Fig. 4 (c) with in the example of shape (f), path distolateral with the bigger diameter end side be provided with maintaining part TP2a, TP2b.
In addition, at Fig. 4 (d) with in the example of shape (e), distolateral maintaining part TP2a, the TP2b of being provided with of or bigger diameter end side distolateral at path is at another distolateral parallel portion TP2c that is provided with.Be located at maintaining part TP2a, the TP2b of special-shaped hollow billet TP2, have and guarantee that bulging adds the needed length of sealing in man-hour.
Hydraulic expanding-forming processing of the present invention is with in the special-shaped hollow billet; Be defined as " having the girth that increases gradually or reduce from axial end to end external diameter "; But be not limited to tapering shown in Fig. 4 (a)～(e) identical simple conical pipe TP2; Shown in figure (f), also can be at the axial vicissitudinous conical pipe TP2 of tapering.
In addition, in the processing profiled hollow billet of hydraulic expanding-forming of the present invention, when the ratio that increases gradually when external diameter is big,, particularly when the bigger diameter end side does not form maintaining part and can guarantee sealing yet, then need not form maintaining part in any end.
From keeping the viewpoint of sealing, preferably distolateral at path and the arbitrary end bigger diameter end side all forms maintaining part.But when when the bigger diameter end side forms maintaining part, in order to guarantee sealing fully, it is bigger than the girth increase ratio of hollow billet main part that the girth of this maintaining part increases ratio.
In hydraulic expanding-forming of the present invention is processed with special-shaped hollow billet, preferably form parallel portion in the end that is not forming maintaining part.At Fig. 4 (d) with in the example of shape (e),, but thus,, just can carry out the axle pushing with easy structure from forming the pipe end of parallel portion TP2c at bigger diameter end side or the distolateral formation parallel portion of path TP2c.
Hydraulic expanding-forming processing unit (plant) of the present invention is to use special-shaped hollow billet to be object with above-mentioned hydraulic expanding-forming processing, and an interior pressure load and an apparatus structure that the hydraulic expanding-forming of pushing is processed have been made up in enforcement.
For this reason, main apparatus structure has: pair of metal mould main body; Sealing tool; Its both ends in order to keep special-shaped hollow billet with this a pair of metal pattern main body, and leading section is inserted into the end of pair of metal mould main body, at least one side of these sealing tools constitutes with transportable mode; And any of said sealing tool all is provided with the hand-hole of working fluid; Work in-process along with moving of sealing tool movably, makes the inner space that is made up of said metal pattern main body and sealing tool become and can change.
So, the concrete structure of hydraulic expanding-forming processing unit (plant) of the present invention designs with an axle pushing condition according to the shape of processing as the hydraulic expanding-forming of processing object with special-shaped hollow billet.
That is, according to following situation, using the apparatus structure that is divided into " first～the 3rd processing unit (plant) ", that is: is object with the special-shaped hollow billet at least one distolateral formation maintaining part, from this distolateral situation of carrying out axle pushing processing; With the maintaining part of side formation at one end, the special-shaped hollow billet of another distolateral formation parallel portion is an object, does the situation of axle pushing processing from both end sides; With the different in nature hollow billet that forms maintaining part in both end sides is object carries out axle pushing processing from both end sides situation.
In the apparatus structure of " first～the 3rd processing unit (plant) ", to load and a pushing in order pressing in making up effectively, and elastic component to be set, it keeps metal pattern to apply the thrust relative with the end of metal pattern main body to pipe end after the injection of working fluid.Through this structure, load in press on one side, resist thrust on one side, make sealing tool the moving axially of special-shaped hollow billet, be processed as possible hydraulic expanding-forming processing thereby can carry out the axle pushing.
" the 4th processing unit (plant) "; Constitute: in above-mentioned " first～the 3rd processing unit (plant) "; Keeping the elastic component of metal pattern applied thrust to a pair of pipe end and between said pair of metal mould main body, keeping metal pattern and the centre is kept the elastic component of metal pattern applied thrust in the middle of at least one group of arranged in order a pair of to this.
Promptly; In " the 4th processing unit (plant) ", keep the metal pattern double slide construction of (keeping metal pattern) as metal pattern main body and pipe end, through keeping at metal pattern main body and pipe end between the metal pattern (perhaps with the centre; Pipe end keeps metal pattern and middle the maintenance between metal pattern; And the centre keeps between metal pattern and the metal pattern main body), elastic component is set, can carry out from the axle pushing processing of pipe end to axial long stroke.
In addition; Through the coefficient of elasticity of adjustment elastic component, can Control Shaft pushing speed, even when adopting the special-shaped hollow billet of unworkability; Also can guarantee the big pipe expanding rate more than existing pipe expanding rate, and can access the hydraulic expanding-forming processed goods of more complicated shape.
The axle pushing driving control device that hydraulic expanding-forming processing unit (plant) of the present invention adopts can be controlled the axle pushing force of sealing tool, perhaps, also can control the displacement (below, be called " axle pushes displacement ") of the sealing tool a when pushing force is worked.
In hydraulic expanding-forming processing, pipe end keeps metal pattern through elastic component (keeping metal pattern and elastic component with the centre) applied thrust, by pressure more than the pushing force of keeping sealing and sealing tool butt.For this reason, from sealing tool and special-shaped hollow billet, and leak generation between pipe end metal pattern and the special-shaped hollow billet.
Supply in the special-shaped hollow billet of hydraulic expanding-forming processing; It can be the hollow billet of before being arranged at hydraulic expanding-forming processing unit (plant) of the present invention, processing maintaining part and parallel portion in advance; In addition; Also can be after being arranged at hydraulic expanding-forming processing unit (plant) of the present invention, to implement the hydraulic expanding-forming first being processed, the hollow billet of processing maintaining part and parallel portion.
Be arranged at when the processing maintaining part is with parallel portion behind the hydraulic expanding-forming processing unit (plant) of the present invention, as the blank of special-shaped hollow billet, employing has " the simple conical pipe " of the girth that increases gradually or reduce to other end external diameter from an axial end.This " simple conical pipe " is arranged at the metal pattern of hydraulic expanding-forming processing unit (plant), along with moving of sealing tool, is formed with maintaining part in the end of regulation, or parallel portion.
In the record of present specification, so-called " simple conical pipe ", the meaning is the blank of special-shaped hollow billet of the present invention, is that at one end side or two ends also are not formed with the conical pipe of maintaining part or parallel portion.
Below, based on description of drawings hydraulic expanding-forming processing unit (plant) of the present invention with use its hydraulic expanding-forming processing method, and resulting hydraulic expanding-forming processed goods.
Fig. 5 is that explanation is as hydraulic expanding-forming processing unit (plant) of the present invention; The figure of the structure of " first processing unit (plant) "; (a) cross section structure before the hydraulic expanding-forming processing of the special-shaped hollow billet of expression shaping; (b) cross section structure after the processing of expression hydraulic expanding-forming, (c) structure of the path distolateral (left surface) before the processing of expression hydraulic expanding-forming.
" first processing unit (plant) " is the special-shaped hollow billet TP2 that is employed in a distolateral formation maintaining part, from this distolateral hydraulic expanding-forming processing unit (plant) that carries out axle pushing processing, disposes: the pair of metal mould main body 11 that has formed cavity (cavity); Keep metal pattern 12 with this distolateral a pair of pipe end that is disposed at this metal pattern main body 11.Then, metal pattern main body 11 is made up of metal pattern main body 11a, 11b up and down, and pipe end keeps metal pattern 12 to keep metal pattern 12a, 12b to constitute by pipe end up and down.
In special-shaped hollow billet TP2 shown in Figure 5; Path distolateral with the bigger diameter end side be respectively equipped with separately maintaining part TP2a and TP2b; But in structure shown in Figure 5, be a hydraulic expanding-forming processing unit (plant) that carries out axle pushing processing from the path side, make that to be arranged at path distolateral sealing tool 13 removable.
For this reason, be located at the distolateral sealing tool of path 13, constitute at up and down pipe end and keep inserting between metal pattern 12a, the 12b its leading section.In addition, sealing tool 13 and pipe end up and down keep metal pattern 12a, 12b thus, and the distolateral maintaining part TP2a of path that clips special-shaped hollow billet TP2 keeps, and is airtight.
With respect to this, be located at the sealing tool 14 of bigger diameter end side, constitute and the end of the bigger diameter end side of up and down metal pattern main body 11a, 11b between, insert its leading section.Sealing tool 14 and up and down metal pattern main body 11a, 11b thus, the maintaining part TP2b that is holding the bigger diameter end side of special-shaped hollow billet TP2 under the arm keeps, sealing.In addition, in the axle center of this sealing tool 14, the hand-hole 14a of working fluid is set.
Shown in Fig. 5 (c), elastic component 15 keeps metal pattern 12a, 12b respectively to dispose a pair of respectively at pipe end up and down.The effect of the thrust that applies through such elastic component 15 because pipe end keeps metal pattern 12a, 12b, is connected to sealing tool 13 more than the extruding force that can keep sealing, so can guarantee the sealing in the bulging processing.
Adopt " first processing unit (plant) " to add man-hour; Before the hydraulic expanding-forming processing; Pipe end up and down keeps the front end of metal pattern 12a, 12b to be positioned at the A point of Fig. 5 (a), but after the hydraulic expanding-forming processing, pipe end up and down keeps the front end of metal pattern 12a, 12b to become the position with the A ' point of figure (a).
For this reason; By metal pattern main body 11a, 11b up and down, pipe end keeps metal pattern 12a, 12b, the inner space of sealing tool 13 and sealing tool 14 formation; Compare before the hydraulic expanding-forming processing with after the hydraulic expanding-forming processing, become big and must just be equivalent to axial distance A～A '.
So, for the maintaining part of special-shaped hollow billet TP2, also can adopt " first processing unit (plant) " processing.In this case, do the preceding processing that this implements hydraulic expanding-forming processing, need make bulging processing with special-shaped hollow billet TP2 according to apparatus structure shown in Figure 5.
When adopting " first processing unit (plant) " to make bulging processing, in metal pattern main body 11a up and down, 11b and pipe end maintenance metal pattern 12a, 12b, " simple conical pipe " as the blank of special-shaped hollow billet TP2 is set with special-shaped hollow billet TP2.Afterwards,, or take out to pushing force Yi Bian control described axle pushing displacement, Yi Bian an end of said through crushing " simple conical pipe ", or both ends and form maintaining part.In special-shaped hollow billet TP2 shown in Figure 5, be formed with maintaining part TP2a, TP2b at both ends.
Then; Be located at the sealing tool 14 of bigger diameter end side; With the sealing tool 13 of being located at pipe end maintenance metal pattern side (being that path is distolateral); Keep metal pattern 12a, 12b butt with up and down metal pattern main body 11a, 11b and pipe end up and down respectively, the sealing of keeping is passed through hand-hole 14a on one side to the inside of said special-shaped hollow billet TP2 injection working fluid on one side.
During hydraulic expanding-forming was processed, to pressing in the special-shaped hollow billet TP2 load, the pipe end of leading section insertion simultaneously kept the sealing tool 13 of metal pattern 12 to moving axially, and said pipe end keeps metal pattern 12, resists in the thrust that applies from said elastic portion 15 and moves.
In view of the above; Pipe end up and down keeps the front end of metal pattern 12a, 12b; A point before the processing shown in Fig. 5 (a) moves to the position that becomes the A ' point after the processing, by metal pattern main body 11a, 11b; The inner space that pipe end keeps metal pattern 12a, 12b and sealing tool 13,14 to constitute is altered to consistent with the shape of the hydraulic expanding-forming processed goods PT3 shown in Fig. 5 (b).
In " first processing unit (plant) "; Because after the injection of working fluid; Effect through elastic component 15 can be guaranteed sealing; So between up and down metal pattern main body 11a, 11b and special-shaped hollow billet TP2, perhaps up and down pipe end keeps between metal pattern 12a, 12b and the special-shaped hollow billet TP2, does not have working fluid to leak.
Fig. 6 be explanation as hydraulic expanding-forming processing unit (plant) of the present invention, the figure of the structure of other of " first processing unit (plant) ", (a) the expression cross section structure before the hydraulic expanding-forming processing of special-shaped hollow billet that is shaped, (b) cross section structure after the processing of expression hydraulic expanding-forming.
" first processing unit (plant) " shown in Figure 6 is the hydraulic expanding-forming processing unit (plant) that carries out axle pushing processing from the bigger diameter end side, and the sealing tool 14 of being located at the bigger diameter end side can move, and pipe end up and down keeps metal pattern 12a, 12b to be disposed at the bigger diameter end side.Pipe end shown in Figure 6 keeps metal pattern 12; As said shown in Figure 5, not the inner structure of end face of accommodating, being disposed at metal pattern main body 11, but be located at the structure of the end face of metal pattern main body 11 side by side; But add man-hour at hydraulic expanding-forming, can bring into play same action effect.
Fig. 7, Fig. 8 explain as hydraulic expanding-forming processing unit (plant) of the present invention the figure of the structure of " second processing unit (plant) ".Wherein Fig. 8 (a) expression, the cross section structure before the hydraulic expanding-forming processing of the special-shaped hollow billet with maintaining part and parallel portion of being shaped is represented the cross section structure after the hydraulic expanding-forming process finishing with figure (b).
" second processing unit (plant) "; Be to be employed in a distolateral formation maintaining part; At the special-shaped hollow billet of the opposing party's side side formation parallel portion, carry out the hydraulic expanding-forming processing unit (plant) that the axle pushing is processed from both end sides, in apparatus structure shown in Figure 8; At the distolateral maintaining part TP2a that is provided with of path, be provided with parallel portion TP2c in the bigger diameter end side.
For this reason; In the structure of said " first processing unit (plant) " shown in Figure 5, in the bigger diameter end side of pair of metal mould main body 11, the end inner face approaching with the parallel portion TP2c of special-shaped hollow billet TP2; Outside with the sealing tool 21 of corresponding this inner end portion is respectively equipped with parallel portion 11c, 21c.
As the structure of concrete " second processing unit (plant) ", be located at the formation of the distolateral sealing tool of path 13, be to keep inserting between metal pattern 12a, the 12b its leading section at pipe end up and down.In addition, sealing tool 13 and pipe end up and down keep metal pattern 12a, 12b thus, and the distolateral maintaining part TP2a of path that clips special-shaped hollow billet TP2 comes airtight.
With respect to this, be located at the sealing tool 21 of bigger diameter end side, constitute and the end of the bigger diameter end side of up and down metal pattern main body 11a, 11b between, insert its leading section.Sealing tool 13 and up and down metal pattern main body 11a, 11b thus; The parallel portion TP2c that clips the bigger diameter end side of special-shaped hollow billet TP2 comes airtight; So; Outside at the sealing tool 21 of the end inner face of a pair of genus mould main body 11a, 11b and corresponding this inner end portion is respectively equipped with parallel portion 11c, 21c.
The parallel portion 21c of the outside of this sealing tool 21 restrains hollow billet from inner face when axle pushes, performance can be reached the effect of level and smooth distortion.In addition, in the axle center of this sealing tool 21, be provided with the hand-hole 21a of working fluid.
So, make special-shaped hollow billet TP2, equally also can adopt " second processing unit (plant) " to make special-shaped hollow billet TP2 like aforementioned can the employing " first processing unit (plant) ".
Fig. 7 is that expression will be as " the simple conical pipe " of parent material, is arranged at the figure of cross section structure of the metal pattern main body of " second processing unit (plant) ".When making special-shaped hollow billet; As shown in Figure 7; Will be as " the simple conical pipe TP1 " of the blank of special-shaped hollow billet TP2 of the present invention; The metal pattern main body 11a up and down, 11b and the pipe end up and down that are arranged at the hydraulic expanding-forming processing unit (plant) of conduct " second processing unit (plant) " keep in metal pattern 12a, the 12b.
Then; Sealing tool 13 and sealing tool 21 are being moved axially; The distolateral end of path at " the simple conical pipe TP1 " that kept metal pattern 12a, 12b and sealing tool 13 to seize on both sides by the arms by pipe end up and down; Form maintaining part TP2a, the end of the bigger diameter end side of " simple conical pipe TP1 " that metal pattern main body 11a, 11b and the sealing tool 21 about quilt seized on both sides by the arms forms parallel portion TP2c.Through processing before this, form the special-shaped hollow billet TP2 that supplies in hydraulic expanding-forming processing usefulness.
After forming the special-shaped hollow billet TP2 of hydraulic expanding-forming processing usefulness; Shown in said Fig. 8 (a), and from " second processing unit (plant) ", adopting the situation of special-shaped hollow billet TP2 identical originally, make working fluid in press liter; Simultaneously sealing tool 13,21 is being moved axially; The processing of enforcement hydraulic expanding-forming, final shown in Fig. 8 (b), can access hydraulic expanding-forming processed goods TP3.
So, adopt " second processing unit (plant) " to carry out hydraulic expanding-forming and add man-hour,, also can carry out the axle pushing by easy structure even formed the end of parallel portion.Its result, resulting hydraulic expanding-forming processed goods TP3 can obtain the big pipe expanding rate more than existing pipe expanding rate.
Also have,, owing to form parallel portion, the sealing of hydraulic expanding-forming in processing must be improved in the end of special-shaped hollow billet even not when the end side that has formed parallel portion is carried out axle pushing.Equally, do not carry out the axle pushing and add man-hour, the sealing in the hydraulic expanding-forming is improved from the end side that has formed maintaining part.
Fig. 9 be explanation as hydraulic expanding-forming processing unit (plant) of the present invention, " second processing unit (plant) " other figure of structure is with figure (a) the expression cross section structure before the hydraulic expanding-forming processing of special-shaped hollow billet that is shaped, (b) cross section structure after the existing shape process finishing of expression hydraulic pressure.
" second processing unit (plant) " shown in Figure 9 is provided with maintaining part TP2b in the bigger diameter end side, at the distolateral parallel portion TP2c that is provided with of path, makes the sealing tool 14 of being located at the bigger diameter end side removable, and pipe end up and down keeps metal pattern 12a, 12b to be disposed at the bigger diameter end side.
In " second processing unit (plant) " shown in Figure 9; It is become at the distolateral structure that parallel portion TP2c is set and carries out the axle pushing of path; But as said shown in Figure 8; Carry out the situation of axle pushing with in the bigger diameter end side parallel portion TP2c being set and compare, the gliding smoothing of sealing tool 21 can carry out stable axle pushing.
In addition, pipe end shown in Figure 9 keeps metal pattern 12, is not the inner structure of end face of accommodating, being disposed at metal pattern main body 11, but is located at the structure of the end face of metal pattern 11 side by side, but adds man-hour at hydraulic expanding-forming, is bringing into play same action effect.
Figure 10 be explanation as hydraulic expanding-forming processing unit (plant) of the present invention, " the 3rd processing unit (plant) " other figure of structure.In with the apparatus structure shown in the figure, the end of metal pattern main body 11a up and down, the both sides of 11b, configuration pipe end up and down keeps metal pattern 12a, 12b respectively.
" the 3rd processing unit (plant) " is to be employed in the special-shaped hollow billet that both end sides forms maintaining part, carries out the hydraulic expanding-forming processing unit (plant) of axle pushing processing from both end sides.For this reason; Dispose pipe end up and down at the both ends of pair of metal mould main body 11a, 11b and keep metal pattern 12a, 12b; Keep maintaining part TP2a, the TP2b at the both ends of special-shaped hollow billet for pipe end therewith keeps metal pattern 12a, 12b, keep metal pattern 12a, 12b to be provided with the sealing tool 13,14 that leading section is inserted at pipe end.
Then, adopt " the 3rd processing unit (plant) " to carry out hydraulic expanding-forming and add man-hour, except carry out axle pushing processing from the both sides of metal pattern main body 11, all to carry out the situation that hydraulic expanding-forming processes identical with employing " first processing unit (plant) ".
Figure 11 be explanation as hydraulic expanding-forming processing unit (plant) of the present invention, " the 4th processing unit (plant) " other figure of structure, expression is equivalent to the apparatus structure of the embodiment of said " first and second processing unit (plant)s ".
" the 4th processing unit (plant) " shown in Figure 11 constitutes: the elastic component 15 that keeps metal pattern 12a, 12b applied thrust at the pipe end up and down in said " first processing unit (plant) " shown in Figure 5 is with between said metal pattern main body 11a, 11b up and down, arranged in order to one group up and down in the middle of keep metal pattern 16a, 16b and this up and down in the middle of the elastic component 15 of maintenance metal pattern 16a, 16b applied thrust.
Adopt " the 4th processing unit (plant) " to carry out hydraulic expanding-forming and add man-hour, before processing, pipe end up and down keeps the front end of metal pattern 12a, 12b to be positioned at A point shown in Figure 11, and the middle front end of metal pattern 16a, 16b that keeps up and down is positioned at the B point shown in the figure.
After hydraulic expanding-forming processing, pipe end up and down keeps the front end of metal pattern 12a, 12b to be positioned at A ' point shown in Figure 11, and is same, and the middle front end of metal pattern 16a, 16b that keeps up and down is positioned at the B ' point shown in the figure.
For this reason, by metal pattern main body 11a, 11b up and down, pipe end keeps metal pattern 12a, 12b; Middle metal pattern 16a, the 16b of keeping; Pipe end keeps metal pattern side seal instrument 13, and metal pattern main body side sealing tool 14 formed inner spaces are compared before the hydraulic expanding-forming processing with after the hydraulic expanding-forming processing; Only change is equivalent to axial A～A ' greatly, and the distance of B～B '.
Adopt " the 4th processing unit (plant) " to carry out hydraulic expanding-forming and add man-hour, can adopt the special-shaped hollow billet TP2 that makes in advance, perhaps also can before carrying out hydraulic expanding-forming processing, after special-shaped hollow billet TP2 is made in employing " the 4th processing unit (plant) ", carry out hydraulic expanding-forming processing again.
Make the special-shaped hollow billet TP2 that supplies in hydraulic expanding-forming processing in order to adopt " the 4th processing unit (plant) "; At metal pattern main body 11a, 11b up and down; Pipe end keeps metal pattern 12a, 12b and middle the maintenance to be set to " the simple conical pipe " of the blank of special-shaped hollow billet TP2 in metal pattern 16a, the 16b.
Afterwards, control described axle pushing displacement, or take out, with sealing tool 13,14 both ends of " simple conical pipe " are implemented to crush processing simultaneously, obtain the special-shaped hollow billet TP2 that two ends have formed maintaining part TP2a, TP2b to pushing force.After sealing the maintaining part TP2a, TP2b of this special-shaped hollow billet TP2,, in said special-shaped hollow billet TP2, inject working fluid through hand-hole 14a.
In the hydraulic expanding-forming processing, to pressing in the special-shaped hollow billet TP2 load, simultaneously along with sealing tool 13 to axial moving, pipe end up and down keep metal pattern 12a, 12b and up and down in the middle of keep metal pattern 16a, 16b opposing thrust and move.
The thing followed; Pipe end up and down keeps metal pattern 12a, 12b and the middle front end that keeps metal pattern 16a, 16b up and down; Move to shape with hydraulic expanding-forming processed goods PT3 consistent, be positioned at A ' shown in Figure 11 and B ' point, in special-shaped hollow billet TP2 implements, press load with axle pushing process.
Said Fig. 5～apparatus structure shown in Figure 11, illustration the concrete mode of hydraulic expanding-forming processing unit (plant) of the present invention, and hydraulic expanding-forming processing unit (plant) of the present invention is not limited to these shapes.In addition, the shape of metal pattern main body also is as fairly simple shape, but certainly, even the shape of the complicacy of the three-dimensional of common auto parts representative also can be suitable for.
In addition; In above-mentioned explanation, be the blank of explanation as special-shaped hollow billet TP2, use the situation of " simple conical pipe "; But the present invention is not limited to this; Also can be processed as crookedly with preform (preform) processing, or be processed into the conical pipe of putting down partially, as the blank of special-shaped hollow billet TP2 through compressing tablet implementing bending machining.
In addition; In said apparatus structure shown in Figure 11; Keep metal pattern 16a, 16b to show with special-shaped hollow billet TP2 and join up and down, but up and down in the middle of keep metal pattern 16a, 16b not necessarily need join with special-shaped hollow billet TP2, also can have shape of generatrix arbitrarily.
In addition; In the apparatus structure of said Fig. 5～shown in Figure 11; The front end shape of sealing tool 13,14,21 is trapezoidal and show as simple circular cone; But might not be defined in this shape, also can be employed in the circular cone tread and have the shape of step and and use shape based on sealing of the inner face of O type ring and end face seal.
The possibility of the utilization in the industry
Special-shaped hollow billet is used in hydraulic expanding-forming processing of the present invention; Has the girth that increases gradually or reduce from axial end to end external diameter; And side at least at one end; Form the maintaining part that said girth increases towards this distolateral pipe end face, in addition, can not form the distolateral formation parallel portion of maintaining part.In the processing unit (plant) that has adopted this special-shaped hollow billet, processing method, even under the situation that adopts the axial cross section shape special-shaped hollow billet that great changes have taken place, also can be from pipe end to axially pushing processing.Thus, in the hydraulic expanding-forming processed goods of having implemented hydraulic expanding-forming processing, can obtain the big pipe expanding rate more than existing pipe expanding rate, can be as automobile usefulness, more widely as industrial machinery with and use.
Claims (12)
1. a hydraulic expanding-forming processing method is characterized in that,
After being arranged in the metal pattern of following hydraulic expanding-forming processing unit (plant) with " simple conical pipe ",
Processing has the girth that increases gradually or reduce from an axial end to other end external diameter; At least one distolateral; Form the special-shaped hollow billet of the maintaining part of said girth increase towards this distolateral pipe end face; Said special-shaped hollow billet is implemented to have made up interior pressure load and from hydraulic expanding-forming processing of this distolateral axle pushing of carrying out of having formed said maintaining part
Wherein, when the bigger diameter end side of said special-shaped hollow billet formed said maintaining part, the girth of this maintaining part increases ratio to be compared greatly with the girth increase ratio of hollow billet main part,
The said hydraulic expanding-forming processing unit (plant) that said " simple conical pipe " is set has:
Pair of metal mould main body;
A pair of pipe end keeps metal pattern, and it is one distolateral that it is disposed at this of this metal pattern main body;
First sealing tool, in order to keep metal pattern to keep this distolateral end of said special-shaped hollow billet with this pipe end, it inserts said pipe end with leading section and keeps metal pattern;
Second sealing tool, for this another the distolateral end that keeps said special-shaped hollow billet with said metal pattern main body, it inserts said metal pattern main body with leading section;
Elastic component, it is located at said metal pattern main body and said pipe end keeps between the metal pattern, after working fluid injects at least, keeps metal pattern to apply the thrust relative with the end of said metal pattern main body to said pipe end,
On any of said first and second sealing tools, all be provided with the hand-hole of working fluid,
In hydraulic expanding-forming processing, along with first sealing tool of this distolateral end that keeps said special-shaped hollow billet to axial moving, said pipe end keeps metal pattern to resist the thrust of said elastic component and move.
2. hydraulic expanding-forming processing method according to claim 1 is characterized in that,
Keeping between the said elastic component and said pair of metal mould main body of metal pattern applied thrust to said a pair of pipe end, order is provided with at least one group a pair of middle elastic component that keeps metal pattern and in the middle of these are a pair of, keep the metal pattern applied thrust.
3. a hydraulic expanding-forming processing method is characterized in that,
After being arranged in the metal pattern of following hydraulic expanding-forming processing unit (plant) with " simple conical pipe ",
Processing has the girth that increases gradually or reduce from an axial end to other end external diameter; Side at one end; Form the maintaining part that said girth increases towards this distolateral pipe end face, and, said special-shaped hollow billet enforcement has been made up interior pressure load and processed from the hydraulic expanding-forming of this distolateral axle pushing of carrying out at least at another distolateral special-shaped hollow billet that is formed with parallel portion; Wherein, When the bigger diameter end side of said special-shaped hollow billet formed said maintaining part, the girth of this maintaining part increased ratio and compares greatly with the girth increase ratio of hollow billet main part
The said hydraulic expanding-forming processing unit (plant) that said " simple conical pipe " is set has:
Pair of metal mould main body;
A pair of pipe end keeps metal pattern, and it is one distolateral that it is disposed at this of this metal pattern main body;
First sealing tool, in order to keep metal pattern to keep this distolateral end of said special-shaped hollow billet with this pipe end, it inserts said pipe end with leading section and keeps metal pattern;
Second sealing tool; With corresponding this another the distolateral end inner face of parallel portion of the said special-shaped hollow billet of said metal pattern main body parallel portion is being set; This another the distolateral end that keeps said special-shaped hollow billet for parallel portion with this metal pattern main body; It is provided with parallel portion in the outside corresponding with the parallel portion of said special-shaped hollow billet, and its leading section is inserted said metal pattern main body;
Elastic component, it is located at said metal pattern main body and said pipe end keeps between the metal pattern, after working fluid injects at least, keeps metal pattern to apply the thrust relative with the end of metal pattern main body to said pipe end,
On any of said first and second sealing tools, all be provided with the hand-hole of working fluid,
In the hydraulic expanding-forming processing; At least first sealing tool of this distolateral end that keeps said special-shaped hollow billet is to moving axially; Along with moving of the sealing tool of this distolateral end that keeps said special-shaped hollow billet, said pipe end keeps metal pattern to resist the thrust of said elastic component and move.
4. hydraulic expanding-forming processing method according to claim 3 is characterized in that,
Keeping between the said elastic component and said pair of metal mould main body of metal pattern applied thrust to said a pair of pipe end, order is provided with at least one group a pair of middle elastic component that keeps metal pattern and in the middle of these are a pair of, keep the metal pattern applied thrust.
5. a hydraulic expanding-forming processing method is characterized in that,
After being arranged in the metal pattern of following hydraulic expanding-forming processing unit (plant) with " simple conical pipe ",
Processing has the girth that increases gradually or reduce from an axial end to other end external diameter; At one end side and another are distolateral; Form the special-shaped hollow billet of the maintaining part of said girth increase towards this distolateral pipe end face; Said special-shaped hollow billet is implemented to have made up interior pressure load and the hydraulic expanding-forming processing of the axle pushing carried out from both end sides
Wherein, when the bigger diameter end side of said special-shaped hollow billet formed said maintaining part, the girth of this maintaining part increases ratio to be compared greatly with the girth increase ratio of hollow billet main part,
The said hydraulic expanding-forming processing unit (plant) that said " simple conical pipe " is set has:
Pair of metal mould main body;
A pair of pipe end keeps metal pattern, and it is disposed at these distolateral and this another distolateral both ends of this metal pattern main body respectively;
Sealing tool, its for these pipe ends keep metal patterns keep said special-shaped hollow billet this one distolateral with this another distolateral and be disposed at both ends, the said pipe end that leading section is inserted each keeps metal pattern;
Elastic component, its said pipe end of being located at said metal pattern main body and being disposed at both ends keeps between the metal pattern, at least after working fluid injects, keeps metal pattern to implement the relative thrust in end with the metal pattern main body to each said pipe end,
On any of said sealing tool, all be provided with the hand-hole of working fluid,
In the hydraulic expanding-forming processing, along with the said sealing tool that is disposed at both ends to axial moving, said pipe end keeps metal pattern to resist the thrust of said elastic component and move.
6. hydraulic expanding-forming processing method according to claim 5 is characterized in that,
Keeping between the said elastic component and said pair of metal mould main body of metal pattern applied thrust to said a pair of pipe end, order is provided with at least one group a pair of middle elastic component that keeps metal pattern and in the middle of these are a pair of, keep the metal pattern applied thrust.
7. a hydraulic expanding-forming processing method is characterized in that,
The hydraulic expanding-forming processing unit (plant) that use is described below; With " simple conical pipe " as parent material; Manufacturing has the girth that increases gradually or reduce from an axial end to other end external diameter, at least one distolateral, after this distolateral pipe end face forms the special-shaped hollow billet of the maintaining part that said girth increases; Said special-shaped hollow billet is implemented to have made up interior pressure load and from hydraulic expanding-forming processing of this distolateral axle pushing of carrying out of having formed said maintaining part
Wherein, when the bigger diameter end side of said special-shaped hollow billet formed said maintaining part, the girth of this maintaining part increases ratio to be compared greatly with the girth increase ratio of hollow billet main part,
Said hydraulic expanding-forming processing unit (plant) has:
Pair of metal mould main body;
A pair of pipe end keeps metal pattern, and it is one distolateral that it is disposed at this of this metal pattern main body;
First sealing tool, in order to keep metal pattern to keep this distolateral end of said special-shaped hollow billet with this pipe end, it inserts said pipe end with leading section and keeps metal pattern;
Second sealing tool, for this another the distolateral end that keeps special-shaped hollow billet with said metal pattern main body, it inserts said metal pattern main body with leading section;
Elastic component, it is located at said metal pattern main body and said pipe end keeps between the metal pattern, after working fluid injects at least, keeps metal pattern to apply the thrust relative with the end of said metal pattern main body to said pipe end,
On any of said first and second sealing tools, all be provided with the hand-hole of working fluid,
In hydraulic expanding-forming processing, along with first sealing tool of this distolateral end that keeps said special-shaped hollow billet to axial moving, said pipe end keeps metal pattern to resist the thrust of said elastic component and move.
8. hydraulic expanding-forming processing method according to claim 7 is characterized in that,
Keeping between the said elastic component and said pair of metal mould main body of metal pattern applied thrust to said a pair of pipe end, order is provided with at least one group a pair of middle elastic component that keeps metal pattern and in the middle of these are a pair of, keep the metal pattern applied thrust.
9. a hydraulic expanding-forming processing method is characterized in that,
The hydraulic expanding-forming processing unit (plant) that use is described below, as parent material, manufacturing has the girth that increases gradually or reduce from an axial end to other end external diameter with " simple conical pipe "; Side at one end; Form the maintaining part that said girth increases towards this distolateral pipe end face, and after another distolateral special-shaped hollow billet that is formed with parallel portion, to said special-shaped hollow billet implement to have made up interior pressure load with at least from hydraulic expanding-forming processing of this distolateral axle pushing of carrying out; Wherein, When the bigger diameter end side of said special-shaped hollow billet formed said maintaining part, the girth of this maintaining part increased ratio and compares greatly with the girth increase ratio of hollow billet main part
Said hydraulic expanding-forming processing unit (plant) has:
Pair of metal mould main body;
A pair of pipe end keeps metal pattern, and it is one distolateral that it is disposed at this of this metal pattern main body;
First sealing tool, in order to keep metal pattern to keep this distolateral end of said special-shaped hollow billet with this pipe end, it inserts said pipe end with leading section and keeps metal pattern;
Second sealing tool; With corresponding this another the distolateral end inner face of parallel portion of the said special-shaped hollow billet of said metal pattern main body parallel portion is being set; This another the distolateral end that keeps said special-shaped hollow billet for parallel portion with this metal pattern main body; It is provided with parallel portion in the outside corresponding with the parallel portion of said special-shaped hollow billet, and its leading section is inserted said metal pattern main body;
Elastic component, it is located at said metal pattern main body and said pipe end keeps between the metal pattern, after working fluid injects at least, keeps metal pattern to apply the thrust relative with the end of said metal pattern main body to said pipe end,
On any of said first and second sealing tools, all be provided with the hand-hole of working fluid,
In the hydraulic expanding-forming processing; At least first sealing tool of this distolateral end that keeps said special-shaped hollow billet is to moving axially; Along with moving of the sealing tool of this distolateral end that keeps said special-shaped hollow billet, said pipe end keeps metal pattern to resist the thrust of said elastic component and move.
10. hydraulic expanding-forming processing method according to claim 9 is characterized in that,
Keeping between the said elastic component and said pair of metal mould main body of metal pattern applied thrust to said a pair of pipe end, order is provided with at least one group a pair of middle elastic component that keeps metal pattern and in the middle of these are a pair of, keep the metal pattern applied thrust.
11. a hydraulic expanding-forming processing method is characterized in that,
The hydraulic expanding-forming processing unit (plant) that use is described below; With " simple conical pipe " as parent material; Manufacturing has the girth that increases gradually or reduce from an axial end to other end external diameter, and at one end side and another are distolateral, after this distolateral pipe end face forms the special-shaped hollow billet of the maintaining part that said girth increases; Said special-shaped hollow billet is implemented to have made up interior pressure load and the hydraulic expanding-forming processing of the axle pushing carried out from both end sides
Wherein, when the bigger diameter end side of said special-shaped hollow billet formed said maintaining part, the girth of this maintaining part increases ratio to be compared greatly with the girth increase ratio of hollow billet main part,
Said hydraulic expanding-forming processing unit (plant) has:
Pair of metal mould main body;
A pair of pipe end keeps metal pattern, and it is disposed at these distolateral and another distolateral these both ends of this metal pattern main body respectively;
Sealing tool, its for the pipe end with these keep metal pattern keep said special-shaped hollow billet this one distolateral with this another distolateral and be disposed at both ends, the said pipe end that leading section is inserted each keeps metal pattern;
Elastic component, its said pipe end of being located at said metal pattern main body and being disposed at both ends keeps between the metal pattern, at least after working fluid injects, keeps metal pattern to implement the relative thrust in end with the metal pattern main body to each said pipe end,
On any of said sealing tool, all be provided with the hand-hole of working fluid,
In the hydraulic expanding-forming processing, along with the said sealing tool that is disposed at both ends to axial moving, said pipe end keeps metal pattern to resist the thrust of said elastic component and move.
12. hydraulic expanding-forming processing method according to claim 11 is characterized in that,
Keeping between the said elastic component and said pair of metal mould main body of metal pattern applied thrust to said a pair of pipe end, order is provided with at least one group a pair of middle elastic component that keeps metal pattern and in the middle of these are a pair of, keep the metal pattern applied thrust.
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| CN110976609B (en) * | 2019-11-11 | 2021-02-19 | 潍坊倍力汽车零部件有限公司 | Electric heating type sealing push head and metal forming process |
| CN111558645B (en) * | 2020-07-15 | 2020-10-16 | 天津天锻航空科技有限公司 | Method and device for forming part by conical rubber cylinder |
| CN113967687B (en) * | 2021-11-02 | 2024-07-19 | 涿州市丰鑫管业有限公司 | Pipe expanding processing equipment |
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