数控渐进成形是一种钣金部件快速成形工艺，传统成形路径下壁厚分布符合正弦

NC incremental forming is a sheet metal member forming process fast, the thickness distribution in line with the law of sines conventional forming path, in theory, when the molding member 90 ° angle equal to zero thickness, so that a straight wall part not molded, but multiple passes forming can overcome this limitation. In order to improve the conventional forming method of forming a top-down path thinned serious problem, we use a reciprocating up and down alternately formed on the trajectory method Experimental study were straight-walled rectangular box, results show that: the upper and lower tracks formed alternately reciprocally The method can reduce the extent of the part thickness and thin wall thickness distribution is more uniform, while the workpiece can effectively reduce warpage of the mouth portion.

CNC progressive forming is a kind of rapid forming process of sheet metal parts, the distribution of wall thickness under the traditional forming path conforms to the sine law, in theory, when the forming angle is equal to 90 degrees, the wall thickness of the component is zero, so the straight wall part can not be formed at once, but multi-process forming can break this limit. In order to improve the serious problem of thinning of the top-down forming method of the traditional forming path, this paper uses a method of alternating reciprocating reforming trajectory to carry out a experimental study on the straight wall square box, and the results show that the method of using the up-down alternating reciprocating reforming trajectory can make the thickness of the sheet wall thinning less and the wall thickness distribution more uniform. At the same time can effectively reduce the degree of mouth warping of the production.

NC incremental forming is a rapid forming process for sheet metal parts. The wall thickness distribution under the traditional forming path conforms to the sinusoidal law. In theory, when the forming angle is equal to 90 degrees, the wall thickness of the parts is zero, so the straight-wall parts can not be formed at one time, but multi-pass forming can break through this limitation. In order to improve the serious problem of the traditional top-down forming method, a method of up-down alternating forming trajectory is adopted to test the straight-wall square box. The results show that the method of up-down alternating forming trajectory can reduce the thickness of the wall and make the thickness distribution more uniform, and can effectively reduce the warpage of the mouth of the part. Degree.<br>