Spoke reinforcing method and reinforced structure of spokes
AssigneeSha-Dar Accessories Co., Ltd.
InventorJames Chen
Life of this patent
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Abstract
A spoke reinforcing method includes straightening and cutting a drawn spoke; stamping one end of the spoke using a first stamping unit to form an initial head and an initial neck; clamping the initial head, the initial neck, and a main body of the spoke in a clamping die to forge a reinforced part; stamping the spoke while retained in the clamping die using a second stamping unit to form a final head, a final neck, and a final reinforced part; and hobbing an opposite end to form a threaded portion. In embodiments, the reinforced part has a polygonal cross-section, including a hexagonal or rectangular cross-section.
Claims5
A spoke reinforcing method, including the following steps:
- a straightening and cutoff step) providing a drawn spoke, straightening the drawn spoke, and cutting the drawn spoke, producing a straightened and cutoff spoke;
- a first forging step) stamping one end of the straightened and cutoff spoke using a first stamping unit to form an initial head and an initial neck, producing an initial formed spoke;
- a clamp forming step) clamping the initial head, initial neck, and a main body of the initial formed spoke using a clamping die, producing a reinforced part of the spoke by forging during the clamping;
- a second forging step) stamping, using a second stamping unit, the spoke after the clamp forming step using the same clamping die, so as to form a final head, final neck, and final reinforced part;
- a hobbing step) hobbing an end opposite the final head of said spoke to form a thread part.
Dependencies are inferred from the claim text.