CN102029510A - Method for making hot forging molded bicycle knee joint - Google Patents
Method for making hot forging molded bicycle knee joint Download PDFInfo
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- CN102029510A CN102029510A CN2010105490189A CN201010549018A CN102029510A CN 102029510 A CN102029510 A CN 102029510A CN 2010105490189 A CN2010105490189 A CN 2010105490189A CN 201010549018 A CN201010549018 A CN 201010549018A CN 102029510 A CN102029510 A CN 102029510A
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Abstract
The invention discloses a method for making a hot forging molded bicycle knee joint. The aluminum alloy which is used as a raw material is molded by hot forging in a die to obtain a seamless appearance; proper hardening treatment is matched to achieve the rigidity for safe use; and secondary machining is matched to finish the complete structure appearance, thereby effectively overcoming the defect that the traditional welding device and fixture are not convenient for positioning and are dependent on high technology and cost. The invention simplifies the molding technology of knee joints of a bicycle frame and does not need special technical dependence. Hot forging molding is matched to achieve seamless construction, thereby effectively enhancing the structural rigidity of the knee joint; and moreover, the dependence on the manufacturing technology and cost is reduced, the product quality is enhanced, the dimension is accurate and stable, and the defective rate is greatly lowered, thereby achieving the goals of high economic utilization value and safe production management in industries.
Description
Technical field
The present invention relates to a kind of hot-forging forming field, a kind of especially bicycle knuckle joint spare method for making of hot-forging forming.
Background technology
The interconnective knuckle joint base of standard bicycle vehicle frame pipe, no matter it is the making of the connection knuckle joint spare of the vehicle head tube seat of front frame or five-way base, vertical tube socket etc., usually all be as " cycle frame welding structure " before shown in the case, the pipe fitting of whole knuckle joint, with a body frame pipe is the base main body, the needs that connect vehicle frame according to each pedestal assembling position, or after being the processing in advance of step shape or special caliber, cooperating each to take over the mutual insert group of head is connected, inclination linking according to assembling vehicle frame diverse location needs, and is the connection at various angle of inclination; Each tube connector is according to default angle of inclination, cut in advance and be provided with the relative applying interface portion of usefulness in succession, cooperate again and be presented to a tool of fixing or auxiliary with special retaining element location, with welding operation, reach the making of five-way pipe or various knuckle joint seat spare, and according to the moulding of the multi-direction type base knuckle joint spare of finishing by welding production shown in the case before above-mentioned, not only need rely on extremely skilled solder technology manpower, and need to assist through the tool of various knuckle joint angle or the location of utensil, can finish suitable location welding operation, because whole pedestal knuckle joint spare connects in the combination at the vehicle frame of bicycle, usually need bear high safe load coefficient, so in the requirement of actual welds, need the high super those skilled in the art of tool to finish, especially sometimes more need see through the auxiliary of facility, can finish complete welding operation, what be difficult for overcoming most then is, make with traditional welding processing, because weld is by producing local high heat usually, there is the situation of destroying original tubing tissue in regular meeting, form the conversion of practical structures rigidity, more be easy to generate meaningless more power and concentrate the distortion tolerance that reaches because of cold and hot temperature difference formation, so the shaping with traditional base knuckle joint spare is made, not only high in technical dependence, the easier generation that causes defective products, be difficult to reach the demand that mass production produces, especially be subjected to the temperature difference conversion of local high heat with welding operation, regular meeting makes the angle of oblique can produce conversion after moulding, it just forms the accumulation of actual moulding tolerance, and under cumulative limit, form the actual difference that plugs together angle most probably, and connect with the mutual insert group of cycle frame, often some minute angle changes, just may produce and to assemble or the distortion of vehicle frame, especially with the extremely many senior vehicles of modern times exploitation, as the fine light-weighted vehicle frame of carbon, at all can not welding assembly, only can be bonding with what glue together, and on the connection base of knuckle joint, need be dependent on traditional knuckle joint base, the allowance micropolar of its oblique cutting connection angle is little, because of material behavior with the carbon fibre, the stressed restriction of its support to special assembling angle is stricter, allow the gummed pipe fitting to have the insert group that exceeds design to adorn, because of it very easily constitutes the actual doubt on safe in utilization of vehicle frame, so knuckle joint seat spare with the traditional welding formula, in the actual production, because the difficult reduction of defective products rate, form the difficult reduction of real cost of production, and can't do again and produce lifting fast; Produce the in vogue of needs and present stage bicycle leisure general mood with bicycle, how the technology that produces of vehicle frame knuckle joint spare is relied on further and reduce, more and reach the reduction that integral body produces cost, with the realistic needs that produce, and can effective simplification produce technology and cost, and guarantee the stable of product quality and promote that the vehicle frame knuckle joint spare of looking around existing bicycle is shaped and designs, and has the space of further research and development.
Summary of the invention
In order to overcome the deficiency of existing capability technology, the invention provides a kind of with raw material of aluminum alloy, forge hot is made and is shaped in mould, the outward appearance that reaches no seam formula is made, cooperate suitable cure process, make its rigidity that reaches safe handling, cooperate secondary mechanical to machine the bicycle knuckle joint spare method for making of the hot-forging forming of complete structure outward appearance again.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of bicycle knuckle joint spare method for making of hot-forging forming includes material sawing operation and forge hot compacting and does to finalize the design and make through processing procedures such as surface treatment and cure process; It is characterized in that with the aluminium alloy being that raw material are handled through sawing: raw material are made the material of aluminium extruded shape material or aluminium rod, through cutting into the material block of suitable size; Through The pre-heat treatment: material block is inserted preheating facility inside, do suitable pre-hot-working, make whole processing of preheating pine before material property reaches forging, make things convenient for forging extension moulding with high temperature; Carry out the forging moulding again: the material block after the preheating is inserted shaping dies inside, and the pressurization forging of heating makes it be forged into the semi-finished product shape of integral outer appearance; Take out after cure process: the semi-finished product of moulding are concentrated and are presented in the heat treatment facility, handle with the high temperature hardening heat, effectively adjust the material property structure of semi-finished product object, reach the best rigidity that even structure and realistic use need; Clout cuts operation: repair the limit sheet or the ridge that remove most of forging extension, make its outward appearance near finished product; Carry out burr excision finishing again: repair except that complete finished product mode of appearance, again through surface treatment to grind facility: see through the vibration unhairing limit operation of vibration facility, smooth in appearance is smooth; Carrying out secondary mechanical processing handles: finish machining operations such as boring or tapping, promptly can be made into complete bicycle use frame pipe bend fitting finished product; Described raw material usually with aluminium alloy material for more commonly used.Material block after the described sawing is done finishing earlier and is handled, to remove the cutting burr; The temperature of described The pre-heat treatment is generally between 350-440 ℃ high temperature; Described forging forming operation is according to the big or small material and the shape of actual forging object, can one or one group of above module, do the operation of one or many forging.Before the processing of the module of described forging moulding earlier with 180-200 ℃ mould temperature preheating; The finished product that described secondary mechanical processing is handled is the secondary surface treatment operation according to need; Described secondary mechanical processing is handled operation and be can be surperficial anode baking vanish or polishing person.
The beneficial effect of each composition of the present invention and effect: the bicycle knuckle joint spare method for making of a kind of hot-forging forming of the present invention, with raw material of aluminum alloy, forge hot is made and is shaped in mould, the outward appearance that reaches no seam formula is made, cooperate suitable cure process, make its rigidity that reaches safe handling, cooperate secondary mechanical to machine complete structure outward appearance again, effectively overcome puzzlement and disappearance that many high-tech such as traditional welding and tool location inconvenience etc., cost rely on; The knuckle joint spare forming technique of bicycle rack is simplified, need not special technique relies on, cooperate hot forging forming to reach no seam construction, effectively promote the structural rigidity of knuckle joint spare, and raising produces the reduction of technology and cost, make and produce quality-improving, size is precise and stable, significantly reduces the defective products rate, reaches the purpose that meets high economic use value of industry and safe volume production management.
The specific embodiment
The bicycle knuckle joint spare method for making of a kind of hot-forging forming of the present invention, it mainly is a kind of method for making invention design that makes things convenient for the shaping of bicycle frame pipe knuckle joint spare, whole knuckle joint spare produce design, with the aluminium alloy material is the raw material of main use, need to require according to the actual rigidity of using, usually with general common aluminium alloy material (as AL6061, AL6014, AL6028, AL7005, AL7075 and AL2014) be than common used material, according to actual outward appearance and the winding strength rigid needs that produce knuckle joint spare, can be prefabricated near shapings such as the Al squeezing material of section moulding or aluminium bar materials and take, by the sawing processing raw material are cut into the independent factorial lumber material piece of a section required shape or the material pieces of barred body shape, material block after the sawing (part) is presented in the vibration facility, the deburring that is beforehand with the cutting burr is handled, it is not had protrudes or sharp keen cutting edge, effectively protect the surface maintenance in the forging die cavity, the appropriate material block (part) of burr will be removed, be presented to one group of preheating facility inside and do suitable material preheater processing, according to the material property difference, generally do suitable The pre-heat treatment with 350～440 ℃ high temperature, its shape size according to actual facility transporting velocity and actual block is done necessary adjustment, make whole processing of preheating pine that reaches the preceding material of forging, the preferable ductility of material tool when making things convenient for forging, again that preheating is appropriate material block or material bar, be presented to the forging mould inside, as the forging forming operation, the forging processing procedure of whole moulding, the big or small volume of timber and shape according to actual forging object, can one or more groups above module, do the segmentation forging operation of one or many, to reach the exquisite attractive in appearance and heart size of formed product accurately is the selection of operation, and the module of forging moulding, before processing, can give preheating, make its mould temperature that reaches 180～200 ℃, and heat absorption that can not produce die cavity in the temperature difference simpler and easy for forging lacks; After the object semi-finished product depanning with the forging moulding; concentrate and be presented in the heat treatment facility; do further high temperature cure process; effectively make the material property of semi-finished product object do structural adjustment; reaching even and well-off border uses the best rigidity that needs to keep; heat treatment with general (AL6061) material T4～T6; usually can maintain the hardness number of between HRB55～60; with the semi-finished product after the cure process; carry out a necessary clout that is shaped and cut operation; can repair and remove most forging extension edge sheet or ridge; make its outward appearance near finished product; object after bigger portion clout being cut; carry out the burr excision finishing that follow-up grinding removes thin portion; reach complete finished product mode of appearance; see through the vibration unhairing limit operation of vibration processing facility again; reach the complete smooth surface treatment of finished product; the forging element that surface treatment is appropriate; be presented to the machining processes of doing secondary in the facility; finish the process operation of mechanical treatments such as the boring of whole object or tapping; need during realistic use, promptly finish the finished product of complete bicycle use frame pipe bend fitting and make design.
By molding structure design with cycle frame knuckle joint spare of the present invention, especially toggle element that the mutual insert group of suitable Regular Bicycle hollow type bicycle frame pipe connects such as five-way seat pipe or handlebar seat pipe assemble the threeway knuckle joint spare of usefulness and make, when its moulding that need possess multiple grafting angle is made, can design by aluminum material forging moulding by the present invention is set, make its knuckle joint spare reach jointless one-body molded making fully, not only can guarantee not have the structure insecurity of the welding weld line joint face that forms, more can significantly reduce dependence to solder technology, especially see through the forging modular in design of forging mould, as long as mould development typing, just can produce the toggle element of various moulding, that is the face shaping of any special angle design, do not have the high hot stress raisers of being derived of welding recess fully and may produce the doubt that outward appearance is subjected to the welding processing thermal deformation, it only need see through the subsequent treatment that thermmohardening is handled, just can make the planted agent of forging finish full removal, guarantee that the overall structure rigidity obtains best and the most uniform improvement and design, especially see through shortcoming extrusion modling design, the finished product of its forging, not only the product specification uniformity can be stablized, significantly reduce the generation of defective products rate, can not produce the cumulative limit problem of tradition processing fully, and the internal material tissue will be tightr because of the extruding of forging, effectively promote its structural strength, further guarantee the security that overall structure is used, and then can the appropriateness its structural thickness of reduction, make finished product reach suitable loss of weight effect, use important document with the bicycle lightweight assembling that meets high value of new generation, further promote the product overall value sense of bicycle tool, effectively significantly strengthen the practical effect characteristic of integral product quality and value.
The making of the bicycle rack pipe bend fitting of a whole set of forge hot standard of the present invention in addition, its finished product can need according to the actual assembled apolegamy, can be after secondary mechanical processing be handled, be the secondary surface treatment operation in addition, promptly required according to the assembling of actual finished product, with anode baking vanish or polishing, make the outward appearance tool of knuckle joint spare special beautify processing, cooperate bicycle shaping outward appearance to do facing surfaces and handle, value of the product is further promoted; Make with knuckle joint spare of the present invention again, it is the making of traditional welding formula relatively, have extremely many obvious advantages, characteristic attractive in appearance such as no soldered, and can not form stress in weld concentrates, so that have influence on safe in utilization, formed tolerance does not have the assembling disappearance of cumulative limit during more and at actual producing, the facility and the consistency of product of entire product assembling, keep the attractive in appearance of whole assembling vehicle frame and do not have the doubt of distortion, really reach the purpose of design that planned production and assembling are used, the bicycle frame pipe toggle element of can saying so design produces a big innovation design of technology, its device assembles is by the conversion of module, make and to do various conversion and to produce needs in response to the knuckle joint spare of various different shaping, the design that produces that breaks through traditional vehicle frame assembling knuckle joint spare fully of can saying so, more meet the economy of planned production and the practicality benefit of newly making profits, can be rated as a big innovation design of vehicle frame knuckle joint spare.
In sum, the bicycle knuckle joint spare method for making of a kind of thermoforming of the present invention is used the technology of traditional forge hot, cooperates the arrangement redesign of module and procedure for processing, the forming technique of bicycle use vehicle frame pipe bend fitting is significantly simplified, effectively simplify the actual technology that produces,, do not have the bad doubt of welding fully with the in-molded design of one, the unanimity of guaranteeing product quality is with stable, more significantly reduce producing cost, with regard to producing of knuckle joint spare managed, the exploitation of a kind of method that produces completely newly of can saying so.
Specific embodiments of the invention have been carried out exemplary description above, obviously the invention is not restricted to this, the details of other not specified (NS) is also in protection scope of the present invention.
Claims (8)
1. the bicycle knuckle joint spare method for making of a hot-forging forming includes material sawing operation and forge hot compacting and does to finalize the design and make through processing procedures such as surface treatment and cure process; It is characterized in that with the aluminium alloy being that raw material are handled through sawing: raw material are made the material of aluminium extruded shape material or aluminium rod, through cutting into the material block of suitable size; Through The pre-heat treatment: material block is inserted preheating facility inside, do suitable pre-hot-working, make whole processing of preheating pine before material property reaches forging, make things convenient for forging extension moulding with high temperature; Carry out the forging moulding again: the material block after the preheating is inserted shaping dies inside, and the pressurization forging of heating makes it be forged into the semi-finished product shape of integral outer appearance; Take out after cure process: the semi-finished product of moulding are concentrated and are presented in the heat treatment facility, handle with the high temperature hardening heat, effectively adjust the material property structure of semi-finished product object, reach the best rigidity that use on even and well-off border needs; Clout cuts operation: repair the limit sheet or the ridge that remove most of forging extension, make its outward appearance near finished product; Carry out burr excision finishing again: repair except that complete finished product mode of appearance, again through surface treatment to grind facility: see through the vibration unhairing limit operation of vibration facility, smooth in appearance is smooth; Carrying out secondary mechanical processing handles: finish boring, tapping machining operations, promptly can be made into complete bicycle use frame pipe bend fitting finished product.
2. the bicycle knuckle joint spare method for making of a kind of hot-forging forming according to claim 1, its feature is an aluminum alloy materials at described raw material.
3. the bicycle knuckle joint spare method for making of a kind of hot-forging forming according to claim 1, the material block of its feature after described sawing are done finishing earlier and are handled, to remove the cutting burr.
4. the bicycle knuckle joint spare method for making of a kind of hot-forging forming according to claim 1, its feature in the temperature of described The pre-heat treatment at 350-440 ℃.
5. the bicycle knuckle joint spare method for making of a kind of hot-forging forming according to claim 1, its feature be in big or small material and the shape of described forging forming operation according to actual forging object, can one or one group of above module, do the operation of one or many forging.
6. a kind of bicycle knuckle joint spare method for making of hot-forging forming according to claim 1 or 5, its feature be first mould temperature preheating with 180-200 ℃ before the module processing of described forging moulding.
7. the bicycle knuckle joint spare method for making of a kind of hot-forging forming according to claim 1, the finished product that its feature is handled in described secondary mechanical processing is operated for secondary surface treatment according to need.
8. the bicycle knuckle joint spare method for making of a kind of hot-forging forming according to claim 1, its feature is handled operation in described secondary mechanical processing and be can be surperficial anode baking vanish or polishing person.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105490189A CN102029510A (en) | 2010-11-15 | 2010-11-15 | Method for making hot forging molded bicycle knee joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105490189A CN102029510A (en) | 2010-11-15 | 2010-11-15 | Method for making hot forging molded bicycle knee joint |
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| Publication Number | Publication Date |
|---|---|
| CN102029510A true CN102029510A (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105490189A Pending CN102029510A (en) | 2010-11-15 | 2010-11-15 | Method for making hot forging molded bicycle knee joint |
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| CN (1) | CN102029510A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102642119A (en) * | 2012-05-02 | 2012-08-22 | 兰溪市同力机械有限公司 | Manufacturing process of dining-table support guide arm |
| CN108296720A (en) * | 2018-02-07 | 2018-07-20 | 深圳市宏讯实业有限公司 | A kind of micro parts transmit the impact forging forming method of mould plesiotype blank |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085473A (en) * | 1992-10-14 | 1994-04-20 | 江兴锻压工业股份有限公司 | The manufacture method of drive joint |
| CN2246613Y (en) * | 1995-09-29 | 1997-02-05 | 捷安特(中国)有限公司 | Five-way joint of cycle |
| CN2818293Y (en) * | 2005-08-08 | 2006-09-20 | 瑞奇设计公司 | Separated bicycle frame |
| CN201419772Y (en) * | 2009-05-14 | 2010-03-10 | 锺清旗 | Bicycle frame welded structure |
-
2010
- 2010-11-15 CN CN2010105490189A patent/CN102029510A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085473A (en) * | 1992-10-14 | 1994-04-20 | 江兴锻压工业股份有限公司 | The manufacture method of drive joint |
| CN2246613Y (en) * | 1995-09-29 | 1997-02-05 | 捷安特(中国)有限公司 | Five-way joint of cycle |
| CN2818293Y (en) * | 2005-08-08 | 2006-09-20 | 瑞奇设计公司 | Separated bicycle frame |
| CN201419772Y (en) * | 2009-05-14 | 2010-03-10 | 锺清旗 | Bicycle frame welded structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102642119A (en) * | 2012-05-02 | 2012-08-22 | 兰溪市同力机械有限公司 | Manufacturing process of dining-table support guide arm |
| CN102642119B (en) * | 2012-05-02 | 2013-11-27 | 兰溪市同力机械有限公司 | Manufacturing process of dining-table support guide arm |
| CN108296720A (en) * | 2018-02-07 | 2018-07-20 | 深圳市宏讯实业有限公司 | A kind of micro parts transmit the impact forging forming method of mould plesiotype blank |
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Application publication date: 20110427 |
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