A fixed connection method of a
chip lifting hook piece sequentially comprises: a blanking process, a rough
machining process of a locating hole, a finish
machining process of a main locating hole, a
assembly process of a connecting pin shaft thereof, a finish
machining process of an auxiliary locating hole and a
assembly process of a connecting pin shaft thereof; when in manufacturing, firstly carrying out the blanking operation to obtain the required lifting hook piece, then carrying out point
welding on the lifting hook piece into a whole lifting hook piece, carrying out the rough
machining process of a locating hole on the whole lifting hook piece, i.e. drilling a locating hole on the outside lifting hook piece, and tightening with a bolt, pressing the whole lifting hook piece, tightening the bolt, then carrying out overlaying to the whole lifting hook piece, carrying out the finish
machining process of the main locating hole and the
assembly process of the connecting pin shaft thereof after overlaying, then carrying out the finish
machining process of the auxiliary locating hole and the assembly process of the connecting pin shaft thereof, and obtaining the fixedly connected lifting hook piece after machining. The invention not only has low requirement on the manufacturing equipment, and little
effect factor, but also has little difficulty and better implementation effect.