US20080110023A1 - Method for Making a Bicycle Hub - Google Patents
Method for Making a Bicycle Hub Download PDFInfo
- Publication number
- US20080110023A1 US20080110023A1 US12/019,881 US1988108A US2008110023A1 US 20080110023 A1 US20080110023 A1 US 20080110023A1 US 1988108 A US1988108 A US 1988108A US 2008110023 A1 US2008110023 A1 US 2008110023A1
- Authority
- US
- United States
- Prior art keywords
- product
- semi
- edge
- hub
- making
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- 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
- B21D53/00—Making other particular articles
- B21D53/26—Making other particular articles wheels or the like
- B21D53/265—Making other particular articles wheels or the like parts of wheels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49481—Wheel making
- Y10T29/49492—Land wheel
- Y10T29/49533—Hub making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49481—Wheel making
- Y10T29/49492—Land wheel
- Y10T29/49533—Hub making
- Y10T29/49536—Hub shaping
Definitions
- the present invention relates to a method of making a component of a bicycle, and more particularly to a method of making the rear hubs of a bicycle.
- Hub is an important component disposed in the center of a wheel of a bicycle, and the hub is generally in the form of a hollow pipe that is formed at either end thereof with a circular hub flange, and in the hub flange are annularly formed a plurality of through holes for insertion of spokes.
- U.S. Pat. No. 4,998,344 discloses a method for manufacturing a hub, which comprises the following steps: rotary swaging a work piece to form a semi-product, the work piece is simultaneously struck by three or more dies from the outer peripheral side so that the semi-product is formed smoothly and homogeneously, and two bearing cup seats are simultaneously formed on both ends of the semi-product; and squeezing both ends of the semi-product by a right mold and a left mold so as to form a hub.
- this method of manufacturing a hub still has the following shortcomings that need to be improved:
- the length of the resultant hub usually exceeds the maximum tolerance because of the factors of the molding tolerance and the length tolerance of the work piece.
- the radial dimension of the hub often deviates from the preset value. If the hole of the hub is too large, then the axle cannot be firmly positioned in the hub, and if the hole of the hub is too small, it will be difficult to assemble the axle into the hub.
- the present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
- the primary objective of the present invention is to provide a method of making a rear hub of a bicycle, and the method comprises the steps of swaging, extruding, punching, edge binding, necking and trimming and chamfering. Through the above steps, the rear hub can be made more compact and the strength of the rear hub can be strengthened.
- a method for making a rear hub of a bicycle in accordance with the present invention comprises the following steps:
- FIG. 1 is a flow chart in accordance with the present invention of showing the steps of making the rear hub of a bicycle
- FIG. 2 is an illustrative view of showing a straight pipe
- FIG. 3 shows that the straight pipe has been swaged into a semi-product
- FIG. 4 shows the semi-product after it is extruded
- FIG. 5 shows the semi-product after it is punched
- FIG. 6 shows the semi-product after it is trimmed
- FIG. 7 shows the semi-product after its edge has been bound
- FIG. 8 shows the semi-product after its end has been necked down
- FIG. 9 shows the resultant product after being chamfered.
- FIGS. 1-9 a method of manufacturing a rear hub of a bicycle in accordance with the present invention is shown and comprises the following steps:
- A, swaging placing a straight pipe 21 (work piece) into a mold and swaging it into an hour-glass-shaped semi product 22 , as shown in FIG. 10 .
- Extruding extruding the semi-product 22 to form a hub flange 23 at either end of the semi-product 22 , as shown in FIG. 11 .
- binding binding the edge of an end of the semi-product 22 to make the size of the end of the semi-product 22 satisfy the requirement.
- Edge binding process not only can make the size of the edge of the end of the semi-product 22 more compact and precise, but also can improve the semi-product's strength.
- the steps of necking, trimming and chamfering can be performed in any order according to need, for example: the chamfering process can be carried out first, then the necking process and then the trimming process. Or, trimming process can be made before the necking and chamfering processes.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
A method of making a rear hub of a bicycle comprises: swaging a straight pipe into an hour-glass-shaped semi product, extruding the semi-product to form a hub flange, punching a plurality of holes in the hub flange of the semi-product, binding an edge of an end of the semi-product, necking down the edge-bound end of the semi-product, trimming the semi-product, and chamfering the holes of the semi-product to form a chamfer structure on an edge of the respective holes.
Description
- This is a divisional application of U.S. patent application Ser. No. 11/253,946, which claims the benefit of the earlier filing date of Oct. 18, 2005.
- 1. Field of the Invention
- The present invention relates to a method of making a component of a bicycle, and more particularly to a method of making the rear hubs of a bicycle.
- 2. Description of the Prior Art
- Hub is an important component disposed in the center of a wheel of a bicycle, and the hub is generally in the form of a hollow pipe that is formed at either end thereof with a circular hub flange, and in the hub flange are annularly formed a plurality of through holes for insertion of spokes.
- U.S. Pat. No. 4,998,344 discloses a method for manufacturing a hub, which comprises the following steps: rotary swaging a work piece to form a semi-product, the work piece is simultaneously struck by three or more dies from the outer peripheral side so that the semi-product is formed smoothly and homogeneously, and two bearing cup seats are simultaneously formed on both ends of the semi-product; and squeezing both ends of the semi-product by a right mold and a left mold so as to form a hub. However, this method of manufacturing a hub still has the following shortcomings that need to be improved:
- Firstly, the length of the resultant hub usually exceeds the maximum tolerance because of the factors of the molding tolerance and the length tolerance of the work piece.
- Secondly, during the swaging process, the radial dimension of the hub often deviates from the preset value. If the hole of the hub is too large, then the axle cannot be firmly positioned in the hub, and if the hole of the hub is too small, it will be difficult to assemble the axle into the hub.
- The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
- The primary objective of the present invention is to provide a method of making a rear hub of a bicycle, and the method comprises the steps of swaging, extruding, punching, edge binding, necking and trimming and chamfering. Through the above steps, the rear hub can be made more compact and the strength of the rear hub can be strengthened.
- A method for making a rear hub of a bicycle in accordance with the present invention comprises the following steps:
- swaging a straight pipe into an hour-glass-shaped semi product;
- extruding the semi-product to, form a hub flange at either end of the semi-product;
- punching a plurality of holes in the hub flange of the semi-product, and the holes are annularly arranged;
- binding an edge of an end of the semi-product;
- necking down the edge-bound end of the semi-product,
- trimming both ends of the semi-product to a predetermined value; and
- chamfering the holes of the semi-product to form a chamfer structure on an edge of the respective holes.
- The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiments in accordance with the present invention.
-
FIG. 1 is a flow chart in accordance with the present invention of showing the steps of making the rear hub of a bicycle; -
FIG. 2 is an illustrative view of showing a straight pipe; -
FIG. 3 shows that the straight pipe has been swaged into a semi-product; -
FIG. 4 shows the semi-product after it is extruded, -
FIG. 5 shows the semi-product after it is punched; -
FIG. 6 shows the semi-product after it is trimmed; -
FIG. 7 shows the semi-product after its edge has been bound; -
FIG. 8 shows the semi-product after its end has been necked down; and -
FIG. 9 shows the resultant product after being chamfered. - Referring to
FIGS. 1-9 , a method of manufacturing a rear hub of a bicycle in accordance with the present invention is shown and comprises the following steps: - A, swaging: placing a straight pipe 21 (work piece) into a mold and swaging it into an hour-glass-
shaped semi product 22, as shown inFIG. 10 . - B, Extruding: extruding the
semi-product 22 to form ahub flange 23 at either end of thesemi-product 22, as shown inFIG. 11 . - C, Punching: punching a plurality of
holes 24 in thehub flange 23 of thesemi-product 22, as shown inFIG. 12 , wherein theholes 24 are annularly arranged; - D, binding: binding the edge of an end of the
semi-product 22 to make the size of the end of thesemi-product 22 satisfy the requirement. - E, necking down the edge-bound end of the
semi-product 22 to the predetermined value, as shown inFIG. 13 , for facilitating assembly of axial tube, bearing, ball race and etc. - F, Trimming: trimming both ends of the
semi-product 22 to the predetermined value. - G, Chamfering; chamfering the
holes 24 of thesemi-product 22 to form achamfer structure 25 on the edge of theholes 24, as shown inFIG. 16 , for quick and easy assembly of the spokes. - Edge binding process not only can make the size of the edge of the end of the
semi-product 22 more compact and precise, but also can improve the semi-product's strength. - It will be noted that the steps of necking, trimming and chamfering can be performed in any order according to need, for example: the chamfering process can be carried out first, then the necking process and then the trimming process. Or, trimming process can be made before the necking and chamfering processes.
- While we have shown and described various embodiments in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
Claims (5)
1. A method for making a rear hub of a bicycle comprising the following steps:
swaging a straight pipe into an hour-glass-shaped semi product;
extruding the semi-product to form a hub flange at either end of the semi-product;
punching a plurality of holes in the hub flange of the semi-product, and the holes are annularly arranged;
binding an edge of an end of the semi-product;
necking down the edge-bound end of the semi-product;
trimming both ends of the semi-product to a predetermined value; and
chamfering the holes of the semi-product to form a chamfer structure on an edge of the respective holes.
2. The method for making a rear hub of a bicycle as claimed in claim 1 , wherein the chamfering step is allowed to be carried out before the step of necking down the edge-bound end of the semi-product.
3. The method for making a rear hub of a bicycle as claimed in claim 1 , wherein the trimming step is allowed to be carried out before the step of necking down the edge-bound end of the semi-product.
4. The method for making a rear hub of a bicycle as claimed in claim 1 , wherein the chamfering step is allowed to be carried out before the trimming step.
5. The method for making a rear hub of a bicycle as claimed in claim 1 , wherein the steps of necking, trimming, chamfering and edge-binding are allowed to be carried out in any order.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/019,881 US20080110023A1 (en) | 2005-10-18 | 2008-01-25 | Method for Making a Bicycle Hub |
US13/195,016 US8510950B2 (en) | 2008-01-25 | 2011-08-01 | Method for making a bicycle hub |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/253,946 US20070084056A1 (en) | 2005-10-18 | 2005-10-18 | Method for making a bicycle hub |
US12/019,881 US20080110023A1 (en) | 2005-10-18 | 2008-01-25 | Method for Making a Bicycle Hub |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/253,946 Division US20070084056A1 (en) | 2005-10-18 | 2005-10-18 | Method for making a bicycle hub |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/195,016 Continuation-In-Part US8510950B2 (en) | 2008-01-25 | 2011-08-01 | Method for making a bicycle hub |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080110023A1 true US20080110023A1 (en) | 2008-05-15 |
Family
ID=37946829
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/253,946 Abandoned US20070084056A1 (en) | 2005-10-18 | 2005-10-18 | Method for making a bicycle hub |
US12/019,881 Abandoned US20080110023A1 (en) | 2005-10-18 | 2008-01-25 | Method for Making a Bicycle Hub |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/253,946 Abandoned US20070084056A1 (en) | 2005-10-18 | 2005-10-18 | Method for making a bicycle hub |
Country Status (1)
Country | Link |
---|---|
US (2) | US20070084056A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110283538A1 (en) * | 2008-01-25 | 2011-11-24 | Kin-Ho Hsieh | Method for making a bicycle hub |
CN103101396A (en) * | 2011-11-11 | 2013-05-15 | 永克达工业股份有限公司 | Improved flower hub manufacturing method and improved flower hub structure |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US412389A (en) * | 1889-10-08 | Liam p | ||
US504888A (en) * | 1893-09-12 | Hub for bicycle-wheels | ||
US1754922A (en) * | 1927-03-29 | 1930-04-15 | New Departure Mfg Co | Method of making hubs |
US1928911A (en) * | 1930-12-31 | 1933-10-03 | Midland Steel Prod Co | Method of making wheel hubs |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4998344A (en) * | 1990-03-27 | 1991-03-12 | Kin Ho Hsieh | Method of manufacturing a hub |
-
2005
- 2005-10-18 US US11/253,946 patent/US20070084056A1/en not_active Abandoned
-
2008
- 2008-01-25 US US12/019,881 patent/US20080110023A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US412389A (en) * | 1889-10-08 | Liam p | ||
US504888A (en) * | 1893-09-12 | Hub for bicycle-wheels | ||
US1754922A (en) * | 1927-03-29 | 1930-04-15 | New Departure Mfg Co | Method of making hubs |
US1928911A (en) * | 1930-12-31 | 1933-10-03 | Midland Steel Prod Co | Method of making wheel hubs |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110283538A1 (en) * | 2008-01-25 | 2011-11-24 | Kin-Ho Hsieh | Method for making a bicycle hub |
US8510950B2 (en) * | 2008-01-25 | 2013-08-20 | Bitex Industrial Co., Ltd. | Method for making a bicycle hub |
CN103101396A (en) * | 2011-11-11 | 2013-05-15 | 永克达工业股份有限公司 | Improved flower hub manufacturing method and improved flower hub structure |
Also Published As
Publication number | Publication date |
---|---|
US20070084056A1 (en) | 2007-04-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BITEX INDUSTRIAL CO., LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HSIEH, KIN-HO;REEL/FRAME:020415/0387 Effective date: 20080124 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |