CN201511758U - Hub and special mold for manufacturing the same - Google Patents
Hub and special mold for manufacturing the same Download PDFInfo
- Publication number
- CN201511758U CN201511758U CN2009202047098U CN200920204709U CN201511758U CN 201511758 U CN201511758 U CN 201511758U CN 2009202047098 U CN2009202047098 U CN 2009202047098U CN 200920204709 U CN200920204709 U CN 200920204709U CN 201511758 U CN201511758 U CN 201511758U
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- drum
- ear
- forge
- disc brake
- blank
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Abstract
The utility model relates to a hub for bicycle and a special mold for manufacturing the hub. The hub comprises a hub body (10) with a shaft hole (13), a hug lug (11) and a disc brake (12) on the hub body (10), wherein the hub lug is integrated with the disc brake. The hub is manufactured by rough forging and fine forging on the special mold including an upper die, a lower die, an upper butting iron and a lower butting iron. The hub has the advantages of integrated structure, simple process, reliable use and low manufacture cost.
Description
Technical field
The particular manufacturing craft that the utility model relates to a kind of flower-drum of bicycle use and makes it.
Background technology
Along with the development of society, the status of bicycle promotes gradually, and it is used from riding instead of walk the earliest and rises to motion, recreation tool.With regard to the development of its technology, bicycle also is developed to present multistage variable gear by traditional constant speed gear.Generally speaking, all be to make the variation of multistage with the arrange in pairs or groups backgear of multiple tooth rib of the preceding tool dish of fixed gear wheel, and no matter be the front-wheel of monodentate dish or the trailing wheel of multi-gear disk, its fluted disc all be utilize flower-drum to reach combine with wheel shaft, the purpose of fifth wheel sedan-chair, drive wheel.Owing to flower-drum directly is subjected to the drive of fluted disc wheel is advanced, be that the shearing and the wheel externally applied forces that are born with it are bigger, for bearing bigger external force and accurately driving wheel, the intensity of flower-drum itself and the right alignment at two ends just become the important evidence that its quality is encircled well.
Existing bicycle use flower-drum generally machines on MC (being the Mould Machining center), and the right alignment that it can guarantee the flower-drum two ends is to operate comparatively trouble, cost height.Certainly also have and adopt the mode of forging to come the processing and fabricating flower-drum, but all can't reach one-body molded.
The utility model content
The purpose of this utility model is to provide a kind of integrated flower-drum, and its intensity and right alignment are all higher.Simultaneously, the utility model also provides a kind of particular manufacturing craft of making above-mentioned flower-drum.
For achieving the above object, on the one hand, the utility model provides a kind of flower-drum, and it comprises the bulging body in tape spool hole, and integrated bulging ear and disc brake are arranged on this drum body.Overall structure form makes flower-drum have higher intensity, can well bear shearing and wheel externally applied forces, rapid wear base not, reliability height, long service life.
Particularly, above-mentioned disc brake can be arranged to the plum blossom shape, and above-mentioned bulging ear comprises left side drum ear and right drum ear, and it lays respectively at the two ends of described bulging body.
On the other hand, make the method for above-mentioned flower-drum, comprise the steps:
(a) select materials: choose the metal of predetermined length and thickness as blank according to specification;
(b) forge: the blank in the step (a) is inserted in the particular manufacturing craft, forge, thereby mold above-mentioned bulging ear and above-mentioned disc brake at an end of blank.
" choose the metal of predetermined length and thickness according to specification " in the above-mentioned steps (a), be preferably the volume according to above-mentioned flower-drum (finished product), derby, bonding jumper or the metal bar of selecting to have predetermined length and thickness are as blank.
Preferably, above-mentioned steps (a) but in aluminium or alloy aluminum as the material of above-mentioned blank, its shape is with strip or cylindric being advisable.
Preferably, above-mentioned steps (b) can comprise two of rough forge (b1) and finish forges (b2) step by step, and it is respectively:
(b1) rough forge: make an end of the blank in the step (a) mold the above-mentioned left preliminary profile (promptly size, shape and the precision of left side drum ear and disc brake all also reach designing requirement) that rouses ear and disc brake, obtain blank one time;
(b2) finish forge a: blank through this step of rough forge (b1) is carried out secondary forge, make above-mentioned left side drum ear and described disc brake on size, shape and precision, reach designing requirement, obtain secondary blank.
The purpose of above-mentioned steps (b1) is blank is carried out rough forge, tentatively to mold above-mentioned left side drum ear and above-mentioned disc brake, the left side drum ear and the disc brake of this left side that tentatively molds drum ear and disc brake comparatively approaching above-mentioned finished product flower-drum on shape and size are for next step finish forge is prepared.
The purpose of above-mentioned steps (b2) is by the secondary finish forge, makes left side drum ear and disc brake with preliminary profile all reach the setting requirement on shape, size and precision.
Blank is carried out substep forge, can effectively eliminate the internal stress that produces in the forging process, guarantee the reliability that the finished product flower-drum uses.It has overcome in the present technology, needs deficiencies such as annealing, epithelium forge again after each the forging.
Particularly, in above-mentioned described step (b1), also form first axis hole together.
Particularly,, also can comprise the fixedly step of particular manufacturing craft, fix mould, can guarantee that above-mentioned flower-drum has than high-axiality for above-mentioned steps (b).
Further, said method also comprises the step (c) that finish forge secondary blank is later forged again, to mold above-mentioned right drum ear and/or above-mentioned second axis hole, obtains three blanks (being above-mentioned finished product flower-drum).
According to said method, can conveniently reach the flower-drum that produces integral structure quickly, its technology is simple, intensity and right alignment height, is enough to resist the shearing that born and wheel externally applied forces etc.
On the one hand, the utility model provides a kind of particular manufacturing craft again, and it comprises the upper and lower mould of upper and lower whetstone iron and hollow, and wherein, the below of patrix hollow part has and drum ear and corresponding first die cavity of disc brake outside dimension and second die cavity; The outside dimension at the internal diameter of counterdie hollow space and above-mentioned bulging body middle part adapts.
Particularly, the above-mentioned whetstone iron bottom of going up has a bar structure, and the shape of the size shape of this bar structure and described first axis hole adapts.
Further, above-mentioned patrix comprises rough forge patrix and finish forge patrix, and rough forge patrix hollow part is used for molding above-mentioned left side drum ear and the preliminary profile of stating disc brake on above-mentioned blank when carrying out rough forge; Finish forge patrix hollow part is when carrying out finish forge, be used for above-mentioned left side drum ear with preliminary profile is shaped to meet on shape, size and the precision setting the left side drum ear that requires, and will above-mentioned disc brake be shaped to meet on shape, size and the precision and set disc brake requirement and that be the plum blossom shape with preliminary profile.
Again further, above-mentioned particular manufacturing craft also further comprises the upper, middle and lower of the forging again mould that forges upper and lower whetstone iron and hollow again, wherein, forge patrix again and forge again in the space of enclosing, the hollow part of mould when forging again, cooperates with last whetstone iron phase, be used for a end in above-mentioned secondary blank and mold to meet and set the above-mentioned right side that requires and rouse the ear and/or second axis hole; The upper end of forging the counterdie hollow part again is when forging again, be used for matching with above-mentioned disc brake with the molded good above-mentioned left side drum ear of the above-mentioned secondary blank other end, form location and spacing, forge the location and the position-limiting action of counterdie again, can effectively guarantee the right alignment of first axis hole and second axis hole; The upper end of whetstone iron is positioned at first axis hole of above-mentioned blank under forging again.After forging once more, obtain three blanks (being above-mentioned finished product flower-drum).
Use above-mentioned particular manufacturing craft, common equipments such as coordinating with steam rapid heat cycle air mode forging hammer or friction press, but rapid forge goes out above-mentioned flower-drum, operate very easy, the production efficiency height, the size of forging the gained finished product is accurate, be particularly suitable under the production in enormous quantities condition, forge complex-shaped medium and small forging.
With aluminium is example, and after the employing technique scheme, above-mentioned flower-drum is one-body molded, produces the required primary aluminum material of single flower-drum and directly drops to 230g by original 330g, and cost reduces greatly.And, owing to reduce annealing and epithelium in the processing procedure, and do not need to use high-precision equipment, its production efficiency improves greatly.
Compared with prior art, the beneficial effects of the utility model are: be integral structure, technology is simple, uses reliably, and productive costs is low.
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail; but the utility model is not limited to these embodiments; any on the present embodiment essence spirit improvement or substitute, still belong to the utility model claim scope required for protection.
Description of drawings
Fig. 1 is the scheme drawing of the utility model flower-drum.
Fig. 2 is the right elevation of Fig. 1.
Fig. 3 is the scheme drawing (be combined with a blank and secondary blank) of the utility model particular manufacturing craft, wherein, comprises the rough forge patrix among the I, comprises the finish forge patrix among the II.
Fig. 4 is the scheme drawing (being combined with blank three times) of forge mould part again in the utility model particular manufacturing craft.
Fig. 5 is the schematic flow sheet that blank of the present utility model is shaped to the finished product flower-drum, wherein, (a) is blank X, (b1) is a blank X
1, (b2) be secondary blank X
2, (c) be three blank X
3
The specific embodiment
The scheme drawing of Fig. 1 the utility model flower-drum, Fig. 2 are its right elevation.As can be seen from the figure, flower-drum of the present utility model has the bulging body 10 in a tape spool hole 13, bulging ear 11 and the disc brake 12 that is the plum blossom shape are arranged on it, drum ear 11 comprises integrated left and right bulging ear 111,112, axis hole 13 comprises first axis hole 131 and second axis hole 132, its coaxial two ends that are arranged at bulging body 10.
The scheme drawing of Fig. 3 the utility model particular manufacturing craft.As can be seen from the figure, this particular manufacturing craft comprises patrix 221, the counterdie 222 of whetstone iron 211, following whetstone iron 212 and hollow, wherein, the below of patrix 221 hollow parts has and left side drum ear 111 and corresponding first die cavity 2211 of disc brake 12 outside dimensions and second die cavity 2212; The internal diameter of counterdie 222 hollow spaces adapts with the outside dimension at drum body 10 middle parts.
For the I part among Fig. 3, rough forge patrix 221 ' on first die cavity 221 ' 1 and second die cavity 221 ' 2 be used for molding left side drum ear 111 and disc brake 12 on the blank X molding with preliminary profile, to obtain blank X one time
1For the II part among Fig. 3, finish forge patrix 221 ' on first die cavity 221 ' 1 and second die cavity 221 ' 2 be used for the left side drum ear 111 with preliminary profile is revised with disc brake 12, make its size, shape and precision meet the setting requirement, wherein, disc brake 12 also is formed as plum blossom shape (referring to Fig. 2 or Fig. 5), to obtain secondary blank X
2
It can also be seen that partly that from I part or the II of Fig. 3 last whetstone iron 211 lower ends have a bar structure 2111, the shape of the size shape of this bar structure 2111 and first axis hole 131 adapts, and it molds first axis hole 131 at blank X.
Fig. 4 is the scheme drawing of forge mould part again in the utility model particular manufacturing craft.Among the figure, forge counterdie 22 ' 2 again by secondary blank X
2The drum of the plum blossom shape of bottom is stopped to secondary blank X
2Position, forging down again, whetstone iron 21 ' 2 is positioned at blank X
2 First axis hole 131 in, in forging again under the combined action of mould 22 ' 3 with secondary blank X
2Fixing and spacing.Matching with last whetstone iron 21 ' 1 when forging in the space that enclose the hollow part of mould 22 ' 3 in forging patrix 22 ' 1 again and forging, is used at secondary blank X again
2The upper end one-shot forming go out right drum ear 112, simultaneously, 21 ' 11 whiles of bar structure of last whetstone iron 21 ' 1 lower ends are at secondary blank X
2On mold second axis hole 132, thereby obtain blank X three times
3, i.e. finished product flower-drum.
Fig. 5 is the schematic flow sheet that blank of the present utility model is shaped to the finished product flower-drum, wherein, (a) is blank X, (b1) is a blank X
1, (b2) be secondary blank X
2, (c) be three blank X
3As can be seen from the figure, the method for the utility model manufacturing flower-drum may further comprise the steps:
(a) select materials: the aluminium bar of choosing predetermined length and thickness according to specification is as blank X;
(b1) rough forge: the blank X in the step (a) is placed the particular manufacturing craft shown in the I part of Fig. 2 forge, make the end of blank X mold the left side drum ear 111 of one and the preliminary profile of disc brake 12, and mold first axis hole 131, obtain blank X one time
1
(b2) finish forge: to a blank X through step (b1)
1Insert in the particular manufacturing craft shown in the II part of Fig. 2 and forge, make left side drum ear 111 and disc brake 12 on size, shape and precision, reach designing requirement, obtain secondary blank X with preliminary profile
2
(c) forge again: will be a blank X through step (b2)
2Insert in the forge mould again shown in Fig. 4 and forge, mold the right drum ear 112 and second axis hole 132, obtain blank X three times
3, i.e. finished product flower-drum.
In step (a), step (b1), step (b2) and step (c), can including fixedly, blank becomes a mouthful flower-drum to have higher right alignment to guarantee gained step by step.
Claims (7)
1. flower-drum comprises it is characterized in that the bulging body (10) in tape spool hole (13): integrated bulging ear (11) and disc brake (12) are arranged on the described bulging body (10).
2. flower-drum according to claim 1 is characterized in that: described disc brake (12) is the plum blossom shape.
3. flower-drum according to claim 1 and 2 is characterized in that: described bulging ear (11) comprises left side drum ear (111) and right drum ear (112), and it lays respectively at the two ends of described bulging body (10).
4. make the particular manufacturing craft of the arbitrary described flower-drum of claim 1～3, it is characterized in that: the upper and lower mould (221,222) that comprises upper and lower whetstone iron (211,212) and hollow, wherein, the below of described patrix (221) hollow part has and described bulging ear (111) and corresponding first die cavity of described disc brake (12) outside dimension (2211) and second die cavity (2212); The outside dimension at the internal diameter of described counterdie (222) hollow space and described bulging body (10) middle part adapts.
5. particular manufacturing craft as claimed in claim 4 is characterized in that: described whetstone iron (211) bottom of going up has a bar structure (2111), and the shape of size shape of this bar structure (2111) and described first axis hole (131) adapts.
6. particular manufacturing craft as claimed in claim 4, it is characterized in that: described patrix (221) comprise rough forge patrix (221 ') and finish forge patrix (221 "); described rough forge patrix (221 ') hollow part is used for molding the preliminary profile of described left side drum ear (111) and described disc brake (12) on described blank (X) when carrying out rough forge; Described finish forge patrix (221 ") hollow part is when carrying out finish forge; be used for will have the left side drum ear (111) of preliminary profile be shaped to meet and set the above-mentioned left side drum ear (111) that requires, and the described disc brake (12) that will have a preliminary profile is shaped to meet and sets the described disc brake (12) that requires and be the plum blossom shape.
7. particular manufacturing craft as claimed in claim 4, it is characterized in that: described particular manufacturing craft also further comprises the upper, middle and lower of the forging again moulds (22 ' 1,22 ' 3,22 ' 2) that forge upper and lower whetstone iron (21 ' 1,21 ' 2) and hollow again, wherein, described forge patrix (22 ' 1) again and forge again in the space of enclosing, the hollow part of mould (22 ' 3) when forging again, match with last whetstone iron (21 ' 1), be used at described secondary blank (X
2) an end mold described right drum ear (112); Described upper end of forging counterdie (22 ' 2) hollow part again is used for and described blank (X when forging again
2) the molded good described left side drum ear of the other end (111) matches with described disc brake (12); Described forging again is positioned at described blank (X in the upper end of whetstone iron (21 ' 2) down
2) first axis hole (131) in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202047098U CN201511758U (en) | 2009-09-09 | 2009-09-09 | Hub and special mold for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202047098U CN201511758U (en) | 2009-09-09 | 2009-09-09 | Hub and special mold for manufacturing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201511758U true CN201511758U (en) | 2010-06-23 |
Family
ID=42483162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202047098U Expired - Fee Related CN201511758U (en) | 2009-09-09 | 2009-09-09 | Hub and special mold for manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201511758U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105478651A (en) * | 2015-11-19 | 2016-04-13 | 二重集团（德阳）重型装备股份有限公司 | Forging method of marine diesel engine cylinder cover |
| CN107839825A (en) * | 2017-03-15 | 2018-03-27 | 慈溪市凯质车业有限公司 | Bicycle expansion brake hub assembly |
-
2009
- 2009-09-09 CN CN2009202047098U patent/CN201511758U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105478651A (en) * | 2015-11-19 | 2016-04-13 | 二重集团（德阳）重型装备股份有限公司 | Forging method of marine diesel engine cylinder cover |
| CN105478651B (en) * | 2015-11-19 | 2017-09-15 | 二重集团（德阳）重型装备股份有限公司 | The forging method of boat diesel engine cylinder head |
| CN107839825A (en) * | 2017-03-15 | 2018-03-27 | 慈溪市凯质车业有限公司 | Bicycle expansion brake hub assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20120909 |