This invention relates to the field of milling equipment technology, and discloses a milling device for
processing automotive parts, including a
processing table, and further including: a milling mechanism installed on the top of the
processing table, the milling mechanism including a
tool holder, the milling mechanism being used to install and fix milling cutters; and pre-pressing components installed on both sides of the milling mechanism, the pre-pressing components including guide plates; in this invention, when the lifting cylinder drives the
tool holder to feed downwards, the
tool holder drives the pre-pressing components on both sides to descend synchronously, and the pressure block will contact the
peripheral top surface of the processing position of the automotive sheet
metal part one step in advance. Under the elastic pre-tightening action of the compression spring, the pressure block tightly presses the periphery of the processing position against the top surface of the base, completing the top pre-pressing positioning before milling. In this way, when the
milling cutter head feeds the workpiece, it can effectively avoid the slight vibration displacement of the milling position caused by the
impact force of the tool feed, ensuring the
processing accuracy of groove milling.