Method of fabricating a clipless bicycle pedal

摘要

A clipless mechanism for a four-sided clipless bicycle pedal is made by a stamping and welding process. The stamping is preferably a progressive stamping process. The stamped parts include two components, an inner wing and an outer wing. The two stamped components are generally similar in shape to each other, but the inner wing fits within the outer wing. Each part is first stamped as a flat pattern by a progressive die. Each part then has radii stamped into the edges by the second station of the progressive die. Next, each part is partially folded by the third station of the progressive die. Then each part is folded completely by the fourth station of the progressive die. The actual number of steps may vary depending upon the material chosen, the thickness of the material and the design of the stamping tool. Then each part is welded closed and the resulting rectangular wings are assemblied in juxtaposed orthogonal relation to provide four shoe cleat engaging receptacles.