The method for the manufacture of a spoke for spoked wheels including a step of forming a head of the spoke at a longitudinal end of the shank thereof by equipment for the plastic deformation of the end of the shank, wherein the plastic deformation is obtained by maintaining the shank in relative rotation to the equipment.

The method for the manufacture of a spoke for spoked wheels including a step of forming a head of the spoke at a longitudinal end of the shank thereof by equipment for the plastic deformation of the end of the shank, wherein the plastic deformation is obtained by maintaining the shank in relative rotation to the equipment.

A cassette for a bicycle may include a plurality of sprocket portions joined together into a single unit. The cassette may include a cavity formed in the large end of the cassette. A related manufacturing method may include joining a first generally planar sprocket portion having a plurality of connector portions extending transverse to the plane of the first sprocket portion, to a second generally planar sprocket portion, e.g., by fusing at least one of the connector portions to the second sprocket portion.

A cassette for a bicycle may include a plurality of sprocket portions joined together into a single unit. The cassette may include a cavity formed in the large end of the cassette. A related manufacturing method may include joining a first generally planar sprocket portion having a plurality of connector portions extending transverse to the plane of the first sprocket portion, to a second generally planar sprocket portion, e.g., by fusing at least one of the connector portions to the second sprocket portion.

A method for manufacturing a bicycle front fork having a wheel clamping base. The method includes 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.

A method for manufacturing a bicycle front fork having a wheel clamping base. The method includes 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.

A method for integrally forming a bicycle stem and handlebars includes the following steps: material preparation (S1), pre-processing (S2), initial forging (S3), punch forging (S4), and processing and finishing (S5). By making the stem part 101 solid internally and integrally forming it with the two handlebar parts (102), the overall weight and cost are significantly reduced. The integrated stem part (101) and two handlebar parts (102) allow the solid interior of the stem part (101) to withstand greater external forces. The method greatly reduces the assembly steps, thereby speeding up assembly time. The method improves issues of the conventional technology, which requires additional components to combine the stem and handlebars, thereby increasing overall weight. The present invention addresses the issue of the structure being unable to withstand external forces due to excessive hollow parts inside, which could lead to deformation.

A method for integrally forming a bicycle stem and handlebars includes the following steps: material preparation (S1), pre-processing (S2), initial forging (S3), punch forging (S4), and processing and finishing (S5). By making the stem part 101 solid internally and integrally forming it with the two handlebar parts (102), the overall weight and cost are significantly reduced. The integrated stem part (101) and two handlebar parts (102) allow the solid interior of the stem part (101) to withstand greater external forces. The method greatly reduces the assembly steps, thereby speeding up assembly time. The method improves issues of the conventional technology, which requires additional components to combine the stem and handlebars, thereby increasing overall weight. The present invention addresses the issue of the structure being unable to withstand external forces due to excessive hollow parts inside, which could lead to deformation.