CN108326219B - Shuttle shape spoke manufacturing method - Google Patents
Shuttle shape spoke manufacturing method Download PDFInfo
- Publication number
- CN108326219B CN108326219B CN201710037374.4A CN201710037374A CN108326219B CN 108326219 B CN108326219 B CN 108326219B CN 201710037374 A CN201710037374 A CN 201710037374A CN 108326219 B CN108326219 B CN 108326219B
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- CN
- China
- Prior art keywords
- spoke
- shuttle shape
- angle
- shape spoke
- upper mold
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
- B21D3/05—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers arranged on axes rectangular to the path of the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The present invention provides a kind of shuttle shape spoke manufacturing method, include the following steps: to provide a forging mold, a upper mold and a lower die are provided on the forging mold, include a molding angle and the cambered surface radius for meeting a shuttle shape spoke structure in the upper mold and the lower die, is provided with gap between the upper mold and the lower die；The upper mold and the lower intermode punching press are placed in a circle spoke blank；A flash of shuttle shape spoke structure both ends formation is eliminated with multiple pressure rolling moulding idler wheels；And the straight degree of the curved spoke ontology is adjusted with multiple aligns wheels.Whereby, it when wheel group can be made to rotate, reduces and generates air-swirl, reach minimum air drag.
Description
Technical field
The present invention relates to a kind of spoke manufacturing method, espespecially a kind of shuttle shape spoke manufacturing method.
Background technique
For the air drag that spoke generates there are three types of form, first is that air-flow hits resistance caused by spoke.Second is to rub
Wipe resistance, i.e., air streak spoke surfaces generate frictional force, however with the mobile prestissimo of bicycle for, frictional resistance
It is small to can almost ignore.Third is then outer form drag, in general, wheel group in high-speed rotation, outer form drag be spoke most
Main air drag source.Spoke shape is more smooth, more streamlined, and air resistance coefficient also can be lower, and rider is more laborsaving, also gets over
Higher speed can be run out of.
In order to reduce the outer form drag of spoke, circle spoke is forged to more fusiform shape, is doing for current mainstream
Method.There are two types of commercially available low windage spokes, i.e., flat spoke and cambered surface spoke, and processing method is all by forging or punching press system
At.
General flat spoke is got by the forge mould of upper and lower two groups of whole planes, and there are a thickness for two interplanars.And cambered surface spoke
Item is got by the upper and lower two groups molds with arcuate furrow, and also there are a thickness among two cambered surfaces.Though flat spoke has lines
Succinctly, the good advantage of tough, straight degree, but the disadvantage is that less streamlined, windage reducing effect are inferior to cambered surface spoke.And cambered surface
Spoke has the lower windage of more flat spoke, also there is more fusiform visual impression.But disadvantage is limited in thickness, that is, is forged
In Sheet Metal Forming Technology, upper/lower die easily bumps against and damages, and because thickness is limited, and hence limits the streamlined journey of finished product
Degree.
Summary of the invention
In view of above-mentioned existing issue, it is a primary object of the present invention to: flat spoke is overcome by shuttle shape spoke structure
With cambered surface spoke in shape and technologic disadvantage, and it can reach the purpose for reducing the outer form drag of spoke.
In order to achieve the above object, the present invention provides a kind of shuttle shape spoke manufacturing method, including the following steps: provide a forge mould
Have, be provided with a upper mold and a lower die on the forging mold, includes meeting a shuttle shape spoke structure in the upper mold and the lower die
One molding angle and a cambered surface radius, are provided with gap between the upper mold and the lower die；With one circle spoke blank be placed in the upper mold with
The lower intermode punching press；A flash of shuttle shape spoke structure both ends formation is eliminated with multiple pressure rolling moulding idler wheels；And it is rectified with multiple
Through ship adjusts the straight degree of the curved spoke ontology.
An embodiment according to the present invention, the shuttle shape spoke structure include a spoke ontology, spoke ontology both ends difference
With a cephalic par and a threaded portion, which is equipped with a neck and extends a plat part from the neck, which cuts
The upper and lower surface in face forms the corresponding cambered surface radius, and the both ends in section include multiple tangent lines, and multiple tangent line intersects at one
Point forms the molding angle, and the shuttle shape spoke structure is collectively formed.
An embodiment according to the present invention is eliminating shuttle shape spoke structure both ends formation with multiple pressure rolling moulding idler wheels
Before the flash step, flash is first eliminated with the pressure rolling moulding idler wheel of one group of angle and shapes out cone angle.
An embodiment according to the present invention, wherein the shuttle shape spoke structure two sides eliminate flash and form cone angle, cone angle
Angle is less than or equal to 90 °.
An embodiment according to the present invention, before the straight degree step for adjusting the curved spoke ontology with multiple aligns wheels,
First passed through with these aligns wheels of one group of angle for the shuttle shape spoke structure.
An embodiment according to the present invention, before the straight degree step for adjusting the curved spoke ontology with multiple aligns wheels,
Bending first is formed on shaping the shuttle shape spoke structure after shuttle shape and is aligned.
The angle of an embodiment according to the present invention, these aligns wheels is less than or equal to 90 °.
The invention has the benefit that reducing the air-swirl of generation when wheel group can be made to rotate, reaching reduces air resistance
The effect of power.
Detailed description of the invention
Fig. 1: the step flow chart of shuttle shape spoke manufacturing method of the invention；
Fig. 2: the schematic cross-section of shuttle shape spoke of the present invention；
Fig. 3: the present invention uses the partial side diagrammatic cross-section of forging mold；
Fig. 4: the present invention uses the schematic side view before forging mold processing；
Fig. 5: the present invention uses the front-view schematic diagram before forging mold processing；
Fig. 6: the present invention uses the schematic side view after forging mold processing；
Fig. 7: the present invention uses the front-view schematic diagram after forging mold processing；
Fig. 8: the present invention uses the schematic top plan view of pressure rolling moulding idler wheel and aligns wheel；
Fig. 9: the side elevational cross-section schematic diagram of shuttle shape spoke of the present invention two sides formation flash；
Figure 10: the side elevational cross-section schematic diagram of shuttle shape spoke finished product of the present invention；
Figure 11: the present invention uses the partial side schematic diagram of aligns wheel；
Figure 12: the side elevational cross-section schematic diagram (one) of shuttle shape spoke finished product of the present invention；
Figure 13: the side elevational cross-section schematic diagram (two) of shuttle shape spoke finished product of the present invention；
Figure 14: the schematic side view of shuttle shape spoke entirety of the present invention；
Figure 15: the schematic top plan view of shuttle shape spoke entirety of the present invention.
Description of symbols
1 shuttle shape spoke
11 spoke ontologies
12 cephalic pars
121 necks
122 plat parts
123 cambered surfaces
124 tangent lines
13 threaded portions
15 flashes
2 forging molds
21 upper molds
22 lower dies
3 circle spoke blanks
4 pressure rolling moulding idler wheels
5 aligns wheels
A/b/c tangent line
The gap d
R radius
W width
θ molds angle
Step901 step
Step902 step
Step903 step
Step904 step.
Specific embodiment
Illustrate embodiments of the present invention by specific embodiment below, people skilled in the art can be by this specification institute
The content of explanation is understood other advantages and efficacy of the present invention easily.
Referring to Fig.1, Fig. 1 is the step flow chart of shuttle shape spoke manufacturing method, is shuttle shape spoke manufacturing method of the invention,
Include the following steps:
Step901: a forging mold 2 is provided, is provided with a upper mold 21 and a lower die 22, the upper mold on the forging mold 2
21 with the lower die 22 in include meet 1 structure of a shuttle shape spoke one molding angle θ and 123 radius R of a cambered surface, the upper mold 21 be somebody's turn to do
Gap d is provided between lower die 22；
Step902: punching press between the upper mold 21 and the lower die 22 is placed in a circle spoke blank 3；
Step903: the flash 15 that the 1 structure both ends of shuttle shape spoke are formed is eliminated with multiple pressure rolling moulding idler wheels 4；And
Step904: the straight degree of the curved spoke ontology 11 is adjusted with multiple aligns wheels 5.
Wherein, 15 step of a flash that the 1 structure both ends of shuttle shape spoke are formed is being eliminated with multiple pressure rolling moulding idler wheels 4
Before, flash 15 is first eliminated with the pressure rolling moulding idler wheel 4 of one group of angle and shapes out cone angle.In addition, with multiple aligns wheels 5 tune
Before the straight degree step of the whole curved spoke ontology 11, bending first is formed on shaping the shuttle shape spoke 1 after shuttle shape and is rectified
Directly.
4 and Figure 15 referring to Fig.1, Figure 14 are the schematic side view of shuttle shape spoke entirety, and Figure 15, which is that shuttle shape spoke is whole, to bow
Depending on schematic diagram.The present invention proposes a kind of 1 structure of shuttle shape spoke, and 1 structure of shuttle shape spoke includes spoke ontology 11,11 liang of spoke ontology
It holds and is respectively provided with cephalic par 12 and threaded portion 13, the plat part 122 that cephalic par 12 is equipped with neck 121 and extends from neck 121,
It refer again to Fig. 2, the upper and lower surface in 122 section of plat part forms the cambered surface 123 of corresponding radius R, and the both ends in section include more
A tangent line 124, multiple tangent line 124 intersect at a point, and form a molding angle θ in two phase tangential lines 124, are shaped as shuttle jointly
Shape spoke 1, the appearance of shuttle shape spoke 1 diamond shape for diamond shape or about.
It is the schematic cross-section of shuttle shape spoke with reference to Fig. 2, Fig. 2.In the present embodiment, it when designing shuttle shape spoke 1, needs first
The overall width W in 1 section of shuttle shape spoke is set, to meet the aperture of selected bicycle drive shaft.Secondly windage factor is considered, with certainly
The radius R of constant current linear (curved arc).After known width W and radius R, tangent line ab and tangent line ac, tangent line ab and tangent line can be made
Ac intersects at a point, and ∠ bac is molding angle θ at this time (angle of molding angle θ is less than or equal to 90 °).
It refer again to Fig. 3 to Fig. 7, Fig. 3 is the partial side diagrammatic cross-section using forging mold, and Fig. 4 is using forging
Schematic side view before mold processing, Fig. 5 are the front-view schematic diagram before being processed using forging mold, and Fig. 6 is to use forging mold
Schematic side view after processing, Fig. 7 are the front-view schematic diagram after being processed using forging mold.Again according to W, R and θ value, design
Forging mold 2, and the gap d of the upper mold 21 of reserved forging mold 2 and lower die 22 keeps the gap d of one fixed width, to avoid
Forging mold 2 in test run or production knock against each other and damage.
It is the side elevational cross-section schematic diagram that shuttle shape spoke two sides form flash that Fig. 3, which be refer again to, to Fig. 7 and Fig. 9, Fig. 9, is had
After forging mold 2, then rough 1 semi-finished product of shuttle shape spoke for stamping out flash 15 in the merging forging mold 2 of spoke blank 3 will be justified,
That is the flash 15 of 1 both ends of shuttle shape spoke formation standing shape, that is, eliminate the flash 15 of the 122 section both ends of plat part formation.
It refer again to Fig. 3 to Fig. 7 and Fig. 8 and Figure 10, Fig. 8 is to illustrate using the vertical view of pressure rolling moulding idler wheel and aligns wheel
Figure, Figure 10 are the side elevational cross-section schematic diagram of shuttle shape spoke finished product.Then pass through this 1 semi-finished product of shuttle shape spoke with flash 15
The pressure rolling moulding idler wheel 4 of one group of band angled (with molding angle θ), makes 1 semi-finished product both ends of shuttle shape spoke pass through two pressure rolling mouldings
4 pressure rolling of idler wheel provides angled (same to mold angle θ) cone angle, before Fig. 9 processing, shuttle shape spoke 1 to eliminate flash 15 and shape
Two sides form flash 15, and after Figure 10 processing, 1 two sides of shuttle shape spoke eliminate flash 15 and simultaneously form cone angle, angle of taper be less than or
Equal to 90 °.
Fig. 8 be refer again to Figure 10 and Figure 11, Figure 11 is the partial side schematic diagram using aligns wheel, but is shaped in spoke
During shuttle shape, meeting stress remains and spoke ontology 11 is made to bend to falcate, therefore after spoke shapes out shuttle shape, still
The technique for needing an aligning.Likewise, to make shuttle shape spoke 1 angled (with molding angle θ) by one group of band again to align
Aligns wheel 5, the angle of aligns wheel 5 is less than or equal to 90 °, and 1 both ends of shuttle shape spoke are pressed with two aligns wheels 5, so
Directly spent good low windage shuttle shape spoke 1.
It refer again to Fig. 4, Fig. 5 and Figure 12, Figure 12 is the side elevational cross-section schematic diagram (one) of shuttle shape spoke finished product, shuttle shape spoke
1 citing one, is 1.8mm, sectional area 2.544mm with a diameter2Circle spoke blank 3 be placed in forging mold 2 in strike out shuttle
The design width W of shape spoke 1, the shuttle shape spoke 1 is 2.3mm, R 0.9mm, and with a thickness of 1.2mm, sectional area is about 2.5mm2,
It is about 60 ° that angle is molded after calculating.
It refer again to Fig. 4, Fig. 5 and Figure 13, Figure 13 is the side elevational cross-section schematic diagram (two) of shuttle shape spoke finished product, shuttle shape spoke
1 citing two, with a diameter 1.5mm, sectional area 1.766mm2Circle spoke blank 3 be placed in forging mold 2 strike out shuttle shape spoke
1, the design width W of the shuttle shape spoke 1 is 2.0mm, R 1.0mm, and with a thickness of 1.2mm, sectional area is about 1.7mm2, after calculating
Molding angle is about 90 °.
It includes the spoke ontology that both ends are respectively provided with cephalic par and threaded portion to shuttle shape spoke structure, and below the cephalic par
Equipped with a neck；Neck lower position is equipped with a plat part, and the section of the plat part is processed into shuttle shape.Whereby, can make
When wheel group rotates, the air-swirl of generation is reduced, achievees the effect that reduce air drag.
By above-mentioned detailed description, the progress that implementation is all had in the purpose of the present invention and effect can be sufficiently shown
Property, the usability value of great industry, and be invention not seen before on the market at present complies fully with patent element, it is special in accordance with the law
It files an application.But the foregoing is merely illustrative of the preferred embodiments of the present invention, when cannot be protected to limit patent of the invention
Protect range.It is i.e. all according to equivalent changes and modifications made by the invention patent range, all should belong to the range that the invention patent covers
It is interior.
Claims (4)
1. a kind of shuttle shape spoke manufacturing method, characterized in that it comprises the following steps:
One forging mold is provided, a upper mold and a lower die are provided on the forging mold, it includes meeting that the upper mold is interior with the lower die
One molding angle of one shuttle shape spoke structure and a cambered surface radius, are provided with gap between the upper mold and the lower die；
The upper mold and the lower intermode punching press are placed in a circle spoke blank；
A flash of shuttle shape spoke structure both ends formation is eliminated with multiple pressure rolling moulding idler wheels；And
The straight degree of the curved shuttle shape spoke structure is adjusted with multiple aligns wheels；
Wherein, which includes a spoke ontology, which is respectively provided with a cephalic par and a screw thread
Portion, the cephalic par are equipped with a neck and extend a plat part from the neck, and the upper and lower surface in the plat part section is formed relatively
The cambered surface radius answered, the both ends in section include multiple tangent lines, and multiple tangent line intersects at a point to form the molding angle, the molding
The angle at angle is less than or equal to 90 °, and the shuttle shape spoke structure is collectively formed；
Wherein, to eliminate the flash with the angled pressure rolling moulding idler wheel and shape out cone angle, the angle of the cone angle be less than or
Equal to 90 °.
2. shuttle shape spoke manufacturing method as described in claim 1, which is characterized in that be somebody's turn to do with the adjustment of these aligns wheels is curved
Before the straight degree step of spoke ontology, first to pass through with these angled aligns wheels for the shuttle shape spoke structure.
3. shuttle shape spoke manufacturing method as claimed in claim 2, which is characterized in that to be supplied with these angled aligns wheels
Before the shuttle shape spoke structure passes through step, first the bending formed on shaping the shuttle shape spoke structure after shuttle shape is rectified
Directly.
4. shuttle shape spoke manufacturing method as claimed in claim 2, which is characterized in that the angle of these aligns wheels is less than or equal to
90°。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710037374.4A CN108326219B (en) | 2017-01-19 | 2017-01-19 | Shuttle shape spoke manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710037374.4A CN108326219B (en) | 2017-01-19 | 2017-01-19 | Shuttle shape spoke manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108326219A CN108326219A (en) | 2018-07-27 |
| CN108326219B true CN108326219B (en) | 2019-11-08 |
Family
ID=62921882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710037374.4A Active CN108326219B (en) | 2017-01-19 | 2017-01-19 | Shuttle shape spoke manufacturing method |
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| CN (1) | CN108326219B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29811076U1 (en) * | 1997-08-28 | 1998-08-20 | Piminvest N V | Spoke and wheel with such spokes |
| CN2418027Y (en) * | 2000-06-07 | 2001-02-07 | 连智强 | Bicycle wheel |
| CN1647954A (en) * | 2004-01-27 | 2005-08-03 | 坎培诺洛有限公司 | Spoke for a bicycle wheel, bicycle wheel comprising such a spoke and method for manufacturing such a spoke |
| DE202010013165U1 (en) * | 2010-12-20 | 2011-03-17 | LING, Yi-chuan | bicycle spoke |
| CN202863013U (en) * | 2012-10-29 | 2013-04-10 | 天津市万华车料有限公司 | Cambered surface spoke |
| CN103128127A (en) * | 2013-03-14 | 2013-06-05 | 合肥工业大学 | Parallel wire roller pulling combined forming technology and production equipment thereof |
| CN103240605A (en) * | 2013-05-13 | 2013-08-14 | 天津市万华车料有限公司 | Spoke machine |
| CN104943470A (en) * | 2015-06-29 | 2015-09-30 | 开平市中铝实业有限公司 | Automobile hub with rhombus structure |
-
2017
- 2017-01-19 CN CN201710037374.4A patent/CN108326219B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29811076U1 (en) * | 1997-08-28 | 1998-08-20 | Piminvest N V | Spoke and wheel with such spokes |
| CN2418027Y (en) * | 2000-06-07 | 2001-02-07 | 连智强 | Bicycle wheel |
| CN1647954A (en) * | 2004-01-27 | 2005-08-03 | 坎培诺洛有限公司 | Spoke for a bicycle wheel, bicycle wheel comprising such a spoke and method for manufacturing such a spoke |
| DE202010013165U1 (en) * | 2010-12-20 | 2011-03-17 | LING, Yi-chuan | bicycle spoke |
| CN202863013U (en) * | 2012-10-29 | 2013-04-10 | 天津市万华车料有限公司 | Cambered surface spoke |
| CN103128127A (en) * | 2013-03-14 | 2013-06-05 | 合肥工业大学 | Parallel wire roller pulling combined forming technology and production equipment thereof |
| CN103240605A (en) * | 2013-05-13 | 2013-08-14 | 天津市万华车料有限公司 | Spoke machine |
| CN104943470A (en) * | 2015-06-29 | 2015-09-30 | 开平市中铝实业有限公司 | Automobile hub with rhombus structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108326219A (en) | 2018-07-27 |
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