The invention relates to a method for manufacturing a bicycle front fork having a wheel clamping base. It comprises the steps of extruding an aluminum alloy substrate having three rectangular bars, wherein the two of the rectangular bars have assembling segments; cutting the substrate for a blank and placing it into a mold for forging the three rectangular bars into three round bars; placing the blank into another mold for extruding and punching the three round bars to have guide holes; drilling the round bars along the guide holes to form three round tubes; flattening and shrinking openings of two of the three round tubes; molding the assembling segments; downwardly bending the two round tubes having the assembling segments into two fork tubes of a bicycle front fork; punching the assembling segments into locking connection portions for a clamping base of the bicycle front fork.
METHOD FOR MANUFACTURING BICYCLE FRONT FORK HAVING WHEEL CLAMPING BASE
2016-09-22
Patent
Elektronische Ressource
Englisch
IPC: | B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL , Bearbeiten oder Verarbeiten von Blechen, Metallrohren, -stangen oder -profilen ohne wesentliches Abtragen des Werkstoffs / B21K MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS , Herstellen von Schmiede- oder Presserzeugnissen aus Metall, z.B. Hufeisen, Nieten, Bolzen oder Rädern / B62K Fahrräder , CYCLES |
Method for manufacturing bicycle front fork having wheel clamping base
Europäisches Patentamt | 2017
|METHOD FOR MANUFACTURING A BICYCLE FRONT FORK HAVING A WHEEL CLAMPING BASE
Europäisches Patentamt | 2016
|Integrated bicycle front fork, manufacturing method thereof and bicycle
Europäisches Patentamt | 2020
|