The invention discloses a steering
knuckle master pin hole flexible positioning
machining system and relates to the technical field of automobile manufacturing. A worktable is provided with a quick-changing clamping fixture with a bottom surface provided with a key groove, and the quick-changing clamping fixture is fixed onto the worktable of a boring
machine through keys and bolts; a workpiece is clamped on the quick-changing clamping fixture; a tool is connected with a boring
machine spindle through a taper shank, the boring
machine spindle drives the tool to rotate under the control of the
numerical control procedure of a spindle motor, and a feed motor drives the tool to move transversely under the control of the
numerical control procedure; the boring machine is provided with a boring head tool changer controlled by a tool-changing
system; a cooling
system is arranged inside the boring machine spindle; the spindle motor, the boring head tool changer, the tool-changing system, boring machine spindle, the boring tool, the workpiece, the worktable, the quick-changing clamping fixture and the feed motor are arranged inside a protective device in a closed mode. According to the steering
knuckle master pin hole flexible positioning
machining system,
numerical control tool changing technology and quick-changing
positioning technology are applied to simultaneous
machining of different sizes and shapes of master pin holes or stepped master pin holes of steering knuckles of different varieties, working procedure flexibility and production efficiency of a
production line are effectively improved and
production line investment is reduced.