The invention discloses a flexible automatic
production line and method used for
machining a car engine cylinder cover. The automatic
production line comprises a row of
machine tools arranged at intervals, and further comprises truss manipulators and a material transportation
system; the truss manipulators are in one-to-one correspondence with the
machine tools, and are arranged in front of the
machine tools; a transportation belt of the material transportation
system is across the front end of the row of the machine tools, and continuously extends to the final
machine tool from the first
machine tool; and horizontal tool plates are uniformly connected to the transportation belt at intervals. According to the automatic
production line, a
machining center is adopted for line
assembly, so that 100% flexibility of the automatic production line is realized, the
machining demands of different products can be completely met, and the labor intensity of workers is reduced; each
machine tool is configured with two worktables, and the two worktables alternately work, so that the precision of the machine tool can be kept for a long term and the response speed of the machine tool is increased; and in addition, the loading and unloading time is guaranteed to be overlapped with the
machining time by 100%, so that the loading and unloading time is saved and the production efficiency is improved. The automatic production line can be widely applied to the machining and production of car engine cylinder covers.