Abstract: A part installation machine, when having entered a part installation work area, operates a separation/coupling device to bring a drive carriage section and a part mounting carriage section from a coupled state into a separated state. The part installation machine also operates an engagement device such that the part mounting carriage section is engaged with a transfer system and transported by the transfer system. In this state, the part installation machine controls a travelling speed of the drive carriage section such that a relative position detected by a relative position detection device is maintained within a predetermined range.

Abstract: A part installation machine, when having entered a part installation work area, operates a separation/coupling device to bring a drive carriage section and a part mounting carriage section from a coupled state into a separated state. The part installation machine also operates an engagement device such that the part mounting carriage section is engaged with a transfer system and transported by the transfer system. In this state, the part installation machine controls a travelling speed of the drive carriage section such that a relative position detected by a relative position detection device is maintained within a predetermined range.

Abstract: An apparatus for assembling vehicle bodies which is provided in a vehicle body production line and operative to mount various parts on vehicle bodies conveyed thereinto after passing through a coating process, comprises first door conveying means for transporting doors detached from the vehicle bodies having passed through the coating process, door storing means for temporarily storing the doors transported by the first door conveying means, door assembly line means for mounting the door parts on each of the doors forwarded from the door storing means after being temporarily stored therein, and second door conveying means for transporting the doors each provided with the door parts from the door assembly line means to a door mounting station provided in the vehicle body production line to which the vehicle bodies each provided with the body parts are conveyed.