The invention relates to a
grinding process applied to a high-precision easy-to-assemble hub unit, and belongs to the technical field of hub unit
machining. The
grinding process comprises the following steps that a spline hole of a hub
flange is machined and formed to serve as an axis reference, an inner ring clamping groove of the hub
flange is machined, and an outer ring
flange and a flange holeof the outer ring flange are roughly turned according to the axis reference; then the nesting process of an inner ring and the hub flange is completed through an oil press; a motor sliding air cylinder seat at the front end of a
machine base drives an inner locking notch and channel
grinding assembly to be inserted into the outer ring flange, and a motor sliding air cylinder seat at the side endof the
machine base drives an outer locking notch and channel
grinding wheel to be close to the outer side end of the hub flange with the inner ring; and the outer locking notch and channel
grinding wheel conducts displacement grinding from the outer wall of the hub flange with the inner ring, and the inner locking notch and channel grinding
assembly grinds a locking notch and a channel in the outer ring flange. The
grinding process has the advantages of good operation stability, high precision and long service life, and the problem that the
machining coaxiality of locking notches and channelsof an outer ring flange, an inner ring and a hub flange is poor is solved.