US20070084056A1 - Method for making a bicycle hub - Google Patents

Method for making a bicycle hub Download PDF

Info

Publication number
US20070084056A1
US20070084056A1 US11/253,946 US25394605A US2007084056A1 US 20070084056 A1 US20070084056 A1 US 20070084056A1 US 25394605 A US25394605 A US 25394605A US 2007084056 A1 US2007084056 A1 US 2007084056A1
Authority
US
United States
Prior art keywords
product
semi
holes
edge
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
Application number
US11/253,946
Inventor
Kin-Ho Hsieh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bitex Industrial Co Ltd
Original Assignee
Bitex Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bitex Industrial Co Ltd filed Critical Bitex Industrial Co Ltd
Priority to US11/253,946 priority Critical patent/US20070084056A1/en
Assigned to BITEX INDUSTRIAL CO., LTD. reassignment BITEX INDUSTRIAL CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HSIEH, KIN-HO
Publication of US20070084056A1 publication Critical patent/US20070084056A1/en
Priority to US12/019,881 priority patent/US20080110023A1/en
Abandoned legal-status Critical Current

Links

Images

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 front and 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 face chuck, and in the face chuck 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 front hub of a bicycle, and the method comprises the steps of swaging, extruding, punching, trimming and chamfering. Through the above steps, the front hub can be made more compact and the strength of the front hub can be strengthened.
  • the secondary 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 front hub of a bicycle in accordance with the present invention comprises the following steps:
  • 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 front 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 resultant product after being chamfered
  • FIG. 8 is a flow chart in accordance with the present invention of showing the steps of making the rear hub of a bicycle
  • FIG. 9 is an illustrative view of showing a straight pipe
  • FIG. 10 shows that the straight pipe has been swaged into a semi-product
  • FIG. 11 shows the semi-product after it is extruded
  • FIG. 12 shows the semi-product after it is punched
  • FIG. 13 shows the semi-product after it is trimmed
  • FIG. 14 shows the semi-product after its edge has been bound
  • FIG. 15 shows the semi-product after its end has been necked down
  • FIG. 16 shows the resultant product after being chamfered.
  • FIGS. 1-7 a method of manufacturing a front hub of a bicycle in accordance with the present invention is shown and comprises the following steps:
  • A, swaging placing a straight pipe 11 (work piece) into a mold and swaging it into an hour-glass-shaped semi product 12 , as shown in FIG. 3 .
  • Extruding extruding the semi-product 12 to form a face chuck 13 at either end of the semi-product 12 , as shown in FIG. 4 .
  • Punching punching a plurality of holes 14 in the face chuck 13 of the semi-product 12 , as shown in FIG. 5 , wherein the holes 14 are annularly arranged;
  • chamfering process also can be carried out before the trimming process.
  • FIGS. 8-16 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 face chuck 23 at either end of the semi-product 22 , as shown in FIG. 11 .
  • Punching punching a plurality of holes 24 in the face chuck 23 of the semi-product 22 , as shown in FIG. 12 , wherein the holes 24 are annularly arranged;
  • 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.

Abstract

A method of making a front hub of a bicycle comprises: swaging a straight pipe into an hour-glass-shaped semi product, extruding the semi-product to form a face chuck, punching a plurality of holes in the face chuck of the semi-product, trimming the semi-product; and chamfering the holes of the semi-product to form a chamfer structure. 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 face chuck, punching a plurality of holes in the face chuck 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

    BACKGROUND OF THE INVENTION
  • 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 front and 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 face chuck, and in the face chuck 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.
    • SUMMARY OF THE INVENTION
  • The primary objective of the present invention is to provide a method of making a front hub of a bicycle, and the method comprises the steps of swaging, extruding, punching, trimming and chamfering. Through the above steps, the front hub can be made more compact and the strength of the front hub can be strengthened.
  • The secondary 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 front 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 face chuck at either end of the semi-product;
  • punching a plurality of holes in the face chuck of the semi-product, and the holes are annularly arranged;
  • 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.
  • 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 face chuck at either end of the semi-product;
  • punching a plurality of holes in the face chuck 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.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a flow chart in accordance with the present invention of showing the steps of making the front 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 resultant product after being chamfered;
  • FIG. 8 is a flow chart in accordance with the present invention of showing the steps of making the rear hub of a bicycle;
  • FIG. 9 is an illustrative view of showing a straight pipe;
  • FIG. 10 shows that the straight pipe has been swaged into a semi-product;
  • FIG. 11 shows the semi-product after it is extruded;
  • FIG. 12 shows the semi-product after it is punched;
  • FIG. 13 shows the semi-product after it is trimmed;
  • FIG. 14 shows the semi-product after its edge has been bound;
  • FIG. 15 shows the semi-product after its end has been necked down; and
  • FIG. 16 shows the resultant product after being chamfered.
    • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Referring to FIGS. 1-7, a method of manufacturing a front hub of a bicycle in accordance with the present invention is shown and comprises the following steps:
  • A, swaging: placing a straight pipe 11 (work piece) into a mold and swaging it into an hour-glass-shaped semi product 12, as shown in FIG. 3.
  • B, Extruding: extruding the semi-product 12 to form a face chuck 13 at either end of the semi-product 12, as shown in FIG. 4.
  • C, Punching: punching a plurality of holes 14 in the face chuck 13 of the semi-product 12, as shown in FIG. 5, wherein the holes 14 are annularly arranged;
  • D, Trimming: trimming both ends of the semi-product 12 to the predetermined value, as shown in FIG. 6, for facilitating assembly of axial tube, bearing, ball race and etc.
  • E, Chamfering; chamfering the holes 14 of the semi-product 12 to form a chamfer structure 15 on the edge of the holes 14, as shown in FIG. 7, for quick and easy assembly of the spokes.
  • It will be noted that the chamfering process also can be carried out before the trimming process.
  • Referring to FIGS. 8-16, 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.
  • B, Extruding: extruding the semi-product 22 to form a face chuck 23 at either end of the semi-product 22, as shown in FIG. 11.
  • C, Punching: punching a plurality of holes 24 in the face chuck 23 of the semi-product 22, as shown in FIG. 12, wherein the holes 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 the semi-product 22 satisfy the requirement.
  • E, necking down the edge-bound end of the semi-product 22 to the predetermined value, as shown in FIG. 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 the semi-product 22 to form a chamfer structure 25 on the edge of the holes 24, as shown in FIG. 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 (7)

1. A method for making a front 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 face chuck at either end of the semi-product;
punching a plurality of holes in the face chuck of the semi-product, and the holes are annularly arranged;
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 front hub of a bicycle as claimed in claim 1, wherein the chamfering step is allowed to be carried out before the trimming step.
3. 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 face chuck at either end of the semi-product;
punching a plurality of holes in the face chuck 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.
4. The method for making a rear hub of a bicycle as claimed in claim 3, wherein the chamfering step is allowed to be carried out before the step of necking down the edge-bound end of the semi-product.
5. The method for making a rear hub of a bicycle as claimed in claim 3, wherein the trimming step is allowed to be carried out before the step of necking down the edge-bound end of the semi-product.
6. The method for making a rear hub of a bicycle as claimed in claim 3, wherein the chamfering step is allowed to be carried out before the trimming step.
7. The method for making a rear hub of a bicycle as claimed in claim 3, wherein the steps of necking, trimming, chamfering and edge-binding are allowed to be carried out in any order.
US11/253,946 2005-10-18 2005-10-18 Method for making a bicycle hub Abandoned US20070084056A1 (en)

Priority Applications (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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/253,946 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
US12/019,881 Division US20080110023A1 (en) 2005-10-18 2008-01-25 Method for Making a Bicycle Hub

Publications (1)

Publication Number Publication Date
US20070084056A1 true US20070084056A1 (en) 2007-04-19

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 After (1)

Application Number Title Priority Date Filing Date
US12/019,881 Abandoned US20080110023A1 (en) 2005-10-18 2008-01-25 Method for Making a Bicycle Hub

Country Status (1)

Country Link
US (2) US20070084056A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1754922A (en) * 1927-03-29 1930-04-15 New Departure Mfg Co Method of making hubs
US4998344A (en) * 1990-03-27 1991-03-12 Kin Ho Hsieh Method of manufacturing a hub

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US504888A (en) * 1893-09-12 Hub for bicycle-wheels
US412389A (en) * 1889-10-08 Liam p
US1928911A (en) * 1930-12-31 1933-10-03 Midland Steel Prod Co Method of making wheel hubs

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1754922A (en) * 1927-03-29 1930-04-15 New Departure Mfg Co Method of making hubs
US4998344A (en) * 1990-03-27 1991-03-12 Kin Ho Hsieh Method of manufacturing a hub

Cited By (2)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
US20080110023A1 (en) 2008-05-15

Similar Documents

Publication Publication Date Title
KR101257060B1 (en) Input shaft of steering system for vehicles and manufacturing method thereof
US20070119054A1 (en) Race member in hub unit and method of producing the same
US20050217417A1 (en) Bicycle crank arm
JP4624332B2 (en) Manufacturing method of ball joint member
JPH07317777A (en) Hub unit bearing outer ring and its manufacture
US20070084056A1 (en) Method for making a bicycle hub
US4998344A (en) Method of manufacturing a hub
US20090282683A1 (en) Method for Making Positioning Structures of a Bicycle Hub
US11027324B2 (en) Single piece vehicle wheel manufacturing process
JPH068652B2 (en) Yoke member for universal joint and its manufacturing method
US8510950B2 (en) Method for making a bicycle hub
DE10359645B4 (en) Wheel bearing module in a wheel carrier
US20070169347A1 (en) Method of making vehicle wheel rim
TWI312706B (en)
JPH0369613B2 (en)
JP2011136367A (en) Method of manufacturing nut having vertical groove
US6612033B1 (en) Method for making hollow bicycle cranks
JP2695239B2 (en) Manufacturing method of disk material for vehicle wheel
JP4609778B2 (en) Insert metal fitting and manufacturing method thereof
JPH11227401A (en) Lightened disk for wheel, and manufacture thereof
CN112845869B (en) Special-shaped pipe fitting forming die and forming process
JP2780978B2 (en) Manufacturing method of hollow shaft
JP3898135B2 (en) Sheet metal damper pulley and method of manufacturing the same
JP3128479B2 (en) Multi-stage shaft manufacturing method
JP2008064261A (en) Manufacturing method for outer ring of wheel supporting rolling bearing unit

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:017122/0355

Effective date: 20051013

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION