FORMING PRINCIPLE OF TWO SIDE-DIRECTION BURR AND IT'S PREDICTION IN METAL CUTTING

The burr is one of the common phenomena occurring i n metal cutting operations. The mathematical-mechanical model of two side-dir ection burr formation and transformation is established with plane stress-strai n theory,based on the orthogonal cutting. The main laws of formation and change of the burr are revealed,and it is confirmed by experiment result,which first realizes prediction of the forming and changing of the two side-direction burr in metal cutting operation