CN101143417A - Vehicle frame pipe fitting superplastic formation making method - Google Patents
Vehicle frame pipe fitting superplastic formation making method Download PDFInfo
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- CN101143417A CN101143417A CNA2006101515759A CN200610151575A CN101143417A CN 101143417 A CN101143417 A CN 101143417A CN A2006101515759 A CNA2006101515759 A CN A2006101515759A CN 200610151575 A CN200610151575 A CN 200610151575A CN 101143417 A CN101143417 A CN 101143417A
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- pipe fitting
- vehicle frame
- frame pipe
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Abstract
A super-plastic forming method for a frame pipe fitting comprises following procedures: a. the pre-processing of the pipe fitting: the shell with pres-designed size is formed by pulling a pipe; b. the adjustment of materials: the materials of the shell is adjusted by preset high temperature; c. shape pre-processing: the shape of the shell is changed by external force, which is used as pre-designed shape; d. forming: the shell is put into a mould and the blast-produced process of the shell is practice under high temperature and pressure to expand the final pre-designed shape of the shell; e. the processing of the pipe fitting: the machine work of the shell is practiced, that is, the frame pipe fitting is completed. With the manufacturing procedures and blast-produced method adopted, the shell is expanded as much as the pre-designed shape. And the sections of the pipe fitting have different outline. So the pipe fitting has strong plastic property, which makes the shape of frame pipe fitting more changeable.
Description
[technical field]
The invention relates to a kind of manufacture method of vehicle frame pipe, particularly, after adjusting material, make pipe fitting material crystal grain fine evenly again, utilize hot blow to make type again pipe fitting is formed irregular profile profile with expansion pattern about the pipe fitting of utilization pull procedure.
[background technology]
General vehicle frame comprises relevant utilization utensils such as bicycle, exercycle, except that providing a rack body with the body weight of bearing the user, also as the configuration of each assembly relative position, effectively to reach the best start benefit of each mechanism.Vehicle frame partly is the moulded greatest factor of influence, and the vehicle frame outward appearance tends to have various different types to occur along with contemporary trend, therefore satisfy the demand of vehicle frame external form and structural change, the instrument that does not just drive or move has the individual of popular sense to be equipped with especially.
Modern Vehicle Frame Design trends towards three-dimensional crest line and constitutes the different curved surface of angle, the design of escape traditional round pillar steel pipe vehicle frame, and utilization mechanics principle and ergonomics more can effectively disperse to face in the process of driving the impact power of vehicle frame for making it, and the higher stability of advancing is provided; For catering to the vehicle frame moulding of the changeable demand of innovation, then on the process technique of vehicle frame pipe, need to do considerably to change.
The process technique of existing relevant vehicle frame pipe, as No. 91136338 patent of invention of TaiWan, China disclosed " forming method of seamless frame ", its step mainly comprises: pull: be the thick embryonic tube of taper that a hollow tube pull is become the general ovalize of an end section, make this thick embryonic tube have a sweeping appearance of setting, and an end of this thick embryonic tube has a bigger diameter end: compacting: this is had the thick embryonic tube of setting sweeping appearance be positioned in the mould, this mould is made up of a patrix and a counterdie, on being somebody's turn to do, counterdie has a die cavity of setting respectively, the die cavity of this counterdie is for the parallel placement of this thick embryonic tube, and, make the top of this thick embryonic tube by the downward punching press of this patrix, the bottom surface forms an indentation portion identical with this die cavity shape respectively; Cut: the thick embryonic tube after will suppressing takes out in this mould, and cuts according to a length of setting; It is characterized in that: after the compression moulding step, other carries out the oil pressure forming step: on this, behind the repressed matched moulds of counterdie, arrive the setup pressure value of matched moulds, injection is positioned over the oil mass that the thick embryonic tube of hollow interior in this mould is set, and the side pressure cylinder that utilizes these mould both sides is done the low speed propelling towards the two ends of this thick embryonic tube, and oil pressure arrives when setting value in this mould, respectively this side pressure cylinder is made propelled at high velocity, and respectively the pressurized cylinder of these side pressure cylinder both sides is done the supercharging compensation, and this two side pressures cylinder propelled at high velocity is when reaching default stroke end, promptly finish the final moulding of thick embryonic tube, at this moment, this two side pressures cylinder is just done initial point involution action, and also makes this two pressurized cylinder retreat into initial point, and on being somebody's turn to do, counterdie is done the die sinking action, can carry out thick embryonic tube material returned action.
The technical problem that institute's desire solves
The vehicle frame pipe of above-mentioned technology institute moulding, it is a kind of forming method of seamless frame, it mainly is the thick embryonic tube of taper that the hollow tube pull is become the general ovalize of an end section, make an end of thick embryonic tube have a bigger diameter end, thick embryonic tube is positioned in the mould, utilize the compacting and the oil pressure moulding of mould, make the top of thick embryonic tube, the bottom surface forms an indentation portion with reinforcing function respectively, thick embryonic tube after the compacting is taken out, cut, after cutting step, carry out suitable surface grinding, polishing, the method seamless frame that is shaped can not produce joint close whereby, and whole excellent in appearance also has preferable intensity simultaneously.
Above-mentioned processing procedure is to belong to the shaped by fluid pressure technology, and it injects this pipe fitting internal diameter in the mode of shaped by fluid pressure with highly pressurised liquid, this pipe fitting is to be heated in the process that abovementioned steps is carried out, and can improve ductility, and under hydraulic action, expand outwardly and produce deformation with respect to this nib shape; Yet the manufacture method of this vehicle frame pipe still has can improve progressive space.
[summary of the invention]
The object of the present invention is to provide a kind of vehicle frame pipe fitting superplastic formation making method, be with embryonic tube spare with enlarge, expansion pattern does the outward appearance moulding, and existing forming method mostly is the mode moulding is dwindled in the embryonic tube extruding.
Another object of the present invention is to provide a kind of vehicle frame pipe fitting superplastic formation making method, is the hot gas that utilizes HTHP, cooperates a heating mould, makes the embryonic tube moulding in the blowing mode, so the plasticity height of pipe fitting.
A further object of the present invention is to provide a kind of vehicle frame pipe fitting superplastic formation making method, and the whole pipe fitting of the vehicle frame pipe of its manufacturing is the equal difference of profiled outline, pipe thickness everywhere, can have more variability in configuration design, accords with the demands of the market.
In order to achieve the above object, the invention provides a kind of vehicle frame pipe fitting superplastic formation making method, it mainly comprises the following step:
A, pipe fitting preprocessing: be to take out the embryonic tube that pipe forms the tool pre-set dimension;
B, modified: this embryonic tube is carried out the material adjustment in default high temperature;
C, profile preprocessing: it is preset shape that this embryonic tube is changed its outward appearance with external force;
D, blow molding: utilize a mould that this embryonic tube is placed in it, and carry out blow molding processing, be last preset shape to expand this embryonic tube with high temperature and hyperbar mode;
E, pipe fitting processing: this embryonic tube is carried out machining, promptly finish a vehicle frame pipe;
Wherein preprocessing and modified, can make the material crystal grain of embryonic tube fine and even, be beneficial to the stay in grade of successive process, utilize above-mentioned processing procedure again, in the blow molding mode this embryonic tube expansion is preset shape, and it can form the differently contoured pipe fitting of section everywhere, so its moulding plasticity is higher than general processing procedure, makes the configuration design of vehicle frame pipe have more variability.
Described vehicle frame pipe fitting superplastic formation making method is characterized in that: the modified operation of this step b is with this embryonic tube heat treatment, and the temperature of its heat treatment process is more than 250 ℃.
Described vehicle frame pipe fitting superplastic formation making method is characterized in that: the external form preprocessing of this step c mainly is the change of this embryonic tube being bended, flattens etc. outward appearance with powerful external force.
Described vehicle frame pipe fitting superplastic formation making method is characterized in that: this blow molding machine of this steps d blow molding operation, and it also further includes a mould, and it has a die cavity of default formation of tubes shape; At least one hot-air mouth is a side of being located at this mould, and can be connected with this die cavity; One hot air apparatus is to have a warm-air pipe to be located at this hot-air mouth place, so as to the hot-air of HTHP that the blowing of this mould is provided.
Described vehicle frame pipe fitting superplastic formation making method is characterized in that: the blow molding operation of this steps d, its forming process is temperature required to be more than 300 ℃.
Described vehicle frame pipe fitting superplastic formation making method is characterized in that: the processing of the pipe fitting of this step e, its machining can be that length cuts, milling, boring etc.
Described vehicle frame pipe fitting superplastic formation making method is characterized in that: the outer rim of the section everywhere shape of this vehicle frame pipe is all different.
Described vehicle frame pipe fitting superplastic formation making method is characterized in that: the pipe thickness of section everywhere of this vehicle frame pipe is all different.
Comprehensively above-mentioned, vehicle frame pipe fitting superplastic formation making method of the present invention, provide a kind of molding manufacture procedure, earlier give modified again with the pull embryonic tube, utilizing blow molding to be blown into hot gas with high pressure again expands, enlarge pipe fitting, and it is more complicated to form profile, abundanter vehicle frame pipe is used in configuration design, it can effectively improve the plasticity of pipe fitting, and keep the material and the underlying strength of pipe fitting, can make simultaneously its profiled outline everywhere of pipe fitting goods, pipe thickness can be all different, so can improve market value, and obtain the high process technique of a practicality, make whole really tool industrial applicability and cost benefit.
[description of drawings]
Fig. 1 is the schematic flow sheet of a preferred embodiment of the present invention.
Fig. 2 is the blow molding machine schematic diagram of a preferred embodiment of the present invention.
Fig. 3 is the blow molding view one of a preferred embodiment of the present invention.
Fig. 4 is the blow molding view two of a preferred embodiment of the present invention.
Fig. 5 is the blow molding view three of a preferred embodiment of the present invention.
Fig. 6 is the blow molding view four of a preferred embodiment of the present invention.
Fig. 7 is the blow molding pipe fitting schematic diagram one of a preferred embodiment of the present invention.
Fig. 8 is the blow molding pipe fitting schematic diagram two of a preferred embodiment of the present invention.
Fig. 9 is the blow molding pipe fitting schematic diagram three of a preferred embodiment of the present invention.
Figure 10 is the sampling stress strain curve figure according to moulding rear tubular member of the present invention.
Figure 11,12 is respectively material crystal grain metallographic microscope photo and the electron micrograph of handling the back embryonic tube according to the present invention.
[specific embodiment]
At first please refer to Fig. 1, a kind of aluminium alloy bicycle frame pipe superplastic formation making method provided by the present invention, its step of its fabrication schedule is as follows:
A. pipe fitting preprocessing: be to take out the embryonic tube 10 that pipe forms the tool pre-set dimension.
B. modified: as this embryonic tube 10 to be carried out the material adjustment in default high temperature; It mainly is that this embryonic tube 10 is heat-treated, and its processing procedure temperature is 250 to 500 ℃, and control material grain size is below 20 μ m.
C. profile preprocessing: it is preset shape that this embryonic tube 10 is changed its outward appearance with external force; It mainly is the change of this embryonic tube 10 being bended, flattens etc. outward appearance with powerful external force.
D. blow molding: utilize a blow molding machine 20 that this embryonic tube 10 is placed in it, and carry out blow molding processing with high temperature and hyperbar mode, to expand this embryonic tube 10 last preset shapes, its forming process is temperature required to be 300 to 500 ℃.
E. pipe fitting processing: this embryonic tube 10 is carried out machining, as length cut, cutting operations such as milling, boring, promptly finish a vehicle frame pipe at last.
By above-mentioned processing procedure, wherein preprocessing takes out in the pipe process, need the material crystal grain of control pipe fitting to change, cooperate follow-up modified heat treatment supervisor, can make the material crystal grain of embryonic tube fine and even, be beneficial to the stay in grade of successive process, see also the metallographic microscope photo of actual fabrication and electron micrograph (as Figure 11,12), in the blow molding mode this embryonic tube is enlarged again and be preset shape, and it can form, and section is differently contoured everywhere, and also can be the pipe fitting that the section pipe thickness is all different everywhere and use, so its plasticity height makes the configuration design of vehicle frame pipe have more variability.
By for further understand structural feature of the present invention, application technology means and the effect reached of expection, now embodiment of the present invention is described below:
The disclosed blow molding operation of steps d of the present invention please refer to Fig. 2, and wherein this blow molding machine 20 further includes a mould 21, and it has a die cavity 22 of default formation of tubes shape; At least one hot-air mouth 23 is sides of being located at this mould 21, and can be connected with this die cavity 22; One hot air apparatus 24 is to have a warm-air pipe 25 to be located at this hot-air mouth 23 places, so as to the hot-air of this HTHP that mould 20 is blown is provided.
Please refer to Fig. 3 to Fig. 6, it is the situation of blow molding of the present invention, this embryonic tube 10 that at first will pass through profile preprocessing step places back matched moulds in this die cavity 22, this warm-air pipe 25 is held to extend in the die cavity 22, and guarantee embryonic tube 10 and leakproof airtight with combining of warm- air pipe 25,25 hot gas that begin to send into high temperature and high pressure of this warm-air pipe then, these mould 21 boards also begin heating simultaneously, this moment, hot blast entered this embryonic tube 10 inner edges footpath and pressurized begins expanse, fill up this die cavity 22 default profiles when being expanded to, finally demould takes out this embryonic tube 10.
Please refer to Fig. 7, be to be the embryonic tube behind the blow molding 10, but wherein sample is got the section at A-A and B-B two places, cooperates the side-looking section at two ends, and it is all inequality to get its pipe fitting outline, and in great difference is arranged in shape; In addition with reference to Fig. 8 and Fig. 9, it is the enforcement aspect of other pipe fitting configuration design, the variability that all can obviously look its face shaping is quite flexible, uses the breakthrough that can do in many moulding in design, can not block up in the forming technique of conventional extruded to make the situation of being limited in the design of outward appearance.
The present invention is the embryonic tube that utilizes the pull moulding, cooperate modified program, make the material grains refinement of embryonic tube and evenly, the hot gas of HTHP again, a mould 21 that cooperates heating, make the embryonic tube moulding in the blowing mode, its by with embryonic tube spare to enlarge, expansion pattern is done the outward appearance moulding, and it surpasses moulds ratio than the prior art height, because processing procedure control grain refinement in advance and even, make the follow-up super processing procedure of moulding, still can keep the stable of embryonic tube material, compare the existing molding mode that dwindles with the embryonic tube extruding, processing procedure of the present invention can be promoted the plasticity of pipe fitting, the strength of materials still can be kept, because material is constant, need not push, whole weight is alleviated, still can keep underlying strength, also make more lightweight of unitized frame; In addition, the whole pipe fitting of the vehicle frame pipe of its manufacturing is the equal difference of profiled outline, pipe thickness everywhere, can have more variability in configuration design, accords with the demands of the market.
Comprehensively above-mentioned, the disclosed vehicle frame pipe fitting superplastic formation making method of the present invention, provide a kind of molding manufacture procedure, earlier give modified again with the pull embryonic tube, utilizing blow molding to be blown into hot gas with high pressure again expands, enlarge pipe fitting, and it is more complicated to form profile, abundanter vehicle frame pipe is used in configuration design, it can effectively promote the plasticity of pipe fitting, and keep the material and the underlying strength of pipe fitting, see also the sampling stress strain curve figure (as Figure 10) of moulding rear tubular member, can get simultaneously its profiled outline everywhere of pipe fitting goods, pipe thickness can be all different, so can improve market value, and obtain the high process technique of a practicality, make whole really tool industrial applicability and cost benefit.
Need Chen Mingzhe, the above is specific embodiments of the invention and the know-why used, if the change of doing according to conception of the present invention, when the function that it produced does not exceed specification and graphic contain spiritual yet, all should close and give Chen Ming within the scope of the invention.
Claims (8)
1. vehicle frame pipe fitting superplastic formation making method is characterized in that: comprise the following step:
A. pipe fitting preprocessing: be to take out the embryonic tube that pipe forms the tool pre-set dimension;
B. modified: as this embryonic tube to be carried out the material adjustment in default high temperature;
C. profile preprocessing: it is preset shape that this embryonic tube is changed its outward appearance with external force;
D. blow molding: utilize a blow molding machine that this embryonic tube is placed in it, and carry out blow molding processing, be last preset shape to expand this embryonic tube with high temperature and hyperbar mode;
E. pipe fitting processing: this embryonic tube is carried out machining, promptly finish a vehicle frame pipe.
2. vehicle frame pipe fitting superplastic formation making method as claimed in claim 1 is characterized in that: the modified operation of this step b is with this embryonic tube heat treatment, and the temperature of its heat treatment process is more than 250 ℃.
3. vehicle frame pipe fitting superplastic formation making method as claimed in claim 1 is characterized in that: the external form preprocessing of this step c mainly is the change of this embryonic tube being bended, flattens etc. outward appearance with powerful external force.
4. vehicle frame pipe fitting superplastic formation making method as claimed in claim 1 is characterized in that: this blow molding machine of this steps d blow molding operation, and it also further includes a mould, and it has a die cavity of default formation of tubes shape; At least one hot-air mouth is a side of being located at this mould, and can be connected with this die cavity; One hot air apparatus is to have a warm-air pipe to be located at this hot-air mouth place, so as to the hot-air of HTHP that the blowing of this mould is provided.
5. vehicle frame pipe fitting superplastic formation making method as claimed in claim 1 is characterized in that: the blow molding operation of this steps d, its forming process is temperature required to be more than 300 ℃.
6. vehicle frame pipe fitting superplastic formation making method as claimed in claim 1 is characterized in that: the processing of the pipe fitting of this step e, its machining can be that length cuts, milling, boring etc.
7. vehicle frame pipe fitting superplastic formation making method as claimed in claim 1 is characterized in that: the outer rim of the section everywhere shape of this vehicle frame pipe is all different.
8. vehicle frame pipe fitting superplastic formation making method as claimed in claim 1 is characterized in that: the pipe thickness of section everywhere of this vehicle frame pipe is all different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101515759A CN101143417A (en) | 2006-09-13 | 2006-09-13 | Vehicle frame pipe fitting superplastic formation making method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101515759A CN101143417A (en) | 2006-09-13 | 2006-09-13 | Vehicle frame pipe fitting superplastic formation making method |
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| CN101143417A true CN101143417A (en) | 2008-03-19 |
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| CNA2006101515759A Pending CN101143417A (en) | 2006-09-13 | 2006-09-13 | Vehicle frame pipe fitting superplastic formation making method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909931A (en) * | 2011-08-05 | 2013-02-06 | 锦明实业股份有限公司 | Method for manufacturing decorative plate by heating forming and forming equipment thereof |
| CN105364425A (en) * | 2015-12-17 | 2016-03-02 | 毕国伟 | Manufacturing method of novel bicycle handlebar |
| CN106944514A (en) * | 2017-03-17 | 2017-07-14 | 中山市乐瑞婴童用品有限公司 | The forming method of accurate turned metal bend pipe |
| CN111957825A (en) * | 2020-07-31 | 2020-11-20 | 吉林省正轩车架有限公司 | Local high-frequency normalizing participated forming die process |
-
2006
- 2006-09-13 CN CNA2006101515759A patent/CN101143417A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909931A (en) * | 2011-08-05 | 2013-02-06 | 锦明实业股份有限公司 | Method for manufacturing decorative plate by heating forming and forming equipment thereof |
| CN105364425A (en) * | 2015-12-17 | 2016-03-02 | 毕国伟 | Manufacturing method of novel bicycle handlebar |
| CN106944514A (en) * | 2017-03-17 | 2017-07-14 | 中山市乐瑞婴童用品有限公司 | The forming method of accurate turned metal bend pipe |
| CN106944514B (en) * | 2017-03-17 | 2018-11-02 | 中山市乐瑞婴童用品有限公司 | The forming method of accurate turned metal bend pipe |
| CN111957825A (en) * | 2020-07-31 | 2020-11-20 | 吉林省正轩车架有限公司 | Local high-frequency normalizing participated forming die process |
| CN111957825B (en) * | 2020-07-31 | 2022-08-05 | 吉林省正轩车架有限公司 | Local high-frequency normalizing participated forming die process |
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Open date: 20080319 |