The invention discloses a micro precision
machine tool capable of finishing
machining a free curved surface at a time. The micro precision
machine tool capable of finishing
machining the free curved surface at a time is characterized by comprising a rack, a shock absorbing base, a driving
assembly, a
tool bit assembly, a
workbench and a clamp. The rack is placed on the shock absorbing base; a
machining head
assembly is installed in a normal-triple-
prism inner cavity defined by the rack; an X direction
linear motor, a Y direction
linear motor, a
hydraulic cylinder piston rod, a gear pair and the like of the driving assembly coordinate and cooperate with each other, and a to-be-machined piece can be driven to move in the front, back, left and right directions, to overturn in the vertical direction, and to rotate along the horizontal plane; the
tool bit assembly is driven by a Z direction
linear motor to move up and down; and after the to-be-machined piece is clamped and fixed one time, machining of a plane or the free curved face can be completed. The body portion of the micro precision
machine tool capable of finishing machining the free curved surface at a time is all installed in a
tetrahedron structure space which is quite stable, and the micro precision
machine tool capable of finishing machining the free curved surface at a time is compact in structure, reasonable in arrangement, high in machining precision, good in reliability and stability, capable of finishing machining and forming the free curved surface at a time, and the like.