Method for manufacturing tool string attached to bicycle folding tool, involves heat-treating bar, forming chain-tool, selecting sheet metal part, mounting mounting-pin below sheet metal part and attaching mounting-pin to chain tool

摘要

The method involves manufacturing a rod (1) in a certain length. The rod is cut to form a chain fastening groove (11), a partition element (12), an axial groove (13) and a bolting part (14) during a milling process. A support wall (15) is formed in the chain fastening groove and cut in a shape with an arcuate notch (151). The bolting part is threaded to form a threaded hole (16) and an axial groove (13). The bar is heat-treated, and a chain-tool (10) is formed. A sheet metal part is selected, and a mounting-pin is mounted below the sheet metal part and attached to the chain tool.