摘要 |
During assembly of a vehicle door to a vehicle body, a door installation apparatus is mounted to a frame unit, which is movably mounted on a running rail. A synchronous drive unit, controlled by a user via a control panel, includes a drive roller mounted to the frame unit, a roller shift means that selectively contacts the drive roller to the running rail, and a roller drive unit that drives the drive roller such that the frame unit moves along the running rail at a speed equal to that of the vehicle body. |