| 摘要 |
The invention is an apparatus (10) for assembling a bicycle frame (62) of the type in which the head tube (60), bottom bracket (190) and seat post bracket (124) include stubs for receiving connecting tubes (70, 104, 222) in a press fit. The apparatus includes a base (22), a clamp (26) for receiving the bottom bracket, a carriage (30) for receiving the head tube, and a swing arm (28) which pivots about the axis of the bottom bracket clamp and receives the seat post bracket and seat mast (104) of the bicycle frame. Double-acting cylinder motors (46, 132) are mounted on the base for displacing the carriage toward the bottom bracket clamp and for pivoting the swing arm toward the carriage. A cylinder motor (116) is mounted on the swing arm to urge the seat bracket toward the bottom bracket. A computer control selectively actuates the cylinder motors to urge the bottom bracket, seat post bracket, and head tube toward each other in a substantially continuous motion, thereby urging their respective stubs into the ends of the connecting tubes to form the bicycle frame. |
