Vacuum bottom plate of magnesium alloy electric brush assembly

The utility model discloses a magnesium alloy electric brush assembly vacuum base plate which comprises a vacuum base plate body, the vacuum base plate body is a magnesium alloy metal piece which is formed by magnesium alloy materials in a die-casting mode through the high-pressure die-casting technology, a connecting hinge column is formed at one end of the vacuum base plate body, and a shaft hole is formed in the connecting hinge column. An instrument boss is formed on the outer plate face of the vacuum bottom plate body, and an instrument positioning cavity is formed in the instrument boss. A sealing clamping groove is formed in the inner plate face of the vacuum bottom plate body along the periphery, and four assembling through holes are formed in the positions, located on the outer side of the sealing clamping groove, of the vacuum bottom plate body. The manufacturing method sequentially comprises the steps of mold manufacturing, product die casting, material handle removal, plastic spraying pretreatment