Mechanical Properties of New Type Negative Offset Structure During Shearing Process of Heavy Steel Plate
MA Li��feng1,2,HUANG Qing��xue2,WANG Jian��mei1,2, YANG Jian��wei2,LI Ying3,LI Jin��bao1
1. School of Material Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; 2. School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, Shanxi, China; 3. Computer Institute, Defense Chemical Command Engineering College of PLA, Beijing 100000, China
Mechanical Properties of New Type Negative Offset Structure During Shearing Process of Heavy Steel Plate
MA Li��feng1,2,HUANG Qing��xue2,WANG Jian��mei1,2, YANG Jian��wei2,LI Ying3,LI Jin��bao1
1. School of Material Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; 2. School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, Shanxi, China; 3. Computer Institute, Defense Chemical Command Engineering College of PLA, Beijing 100000, China
ժҪ According to the revised Cailikefu��s rolling shear force formula, motion path equation of spatial seven��bar path was built, and a mechanical model, with the new structural feature of negative offset, was thus successfully established for 2 800 mm heavy shear of some iron and steel company. Shear and bar forces of steel plate, before and after the adoption of negative offset structure, were analyzed, as well as horizontal force component of mechanism that influences pure rolling shear and back��wall push force that keeps blade clearance. It was found that the back��wall push force keeps large even at the time that the maximum rolling shear was obtained; meanwhile, back��wall push force is the most approximate to side forces when 60-100 mm of offset was adopted. Both theoretical results and on��site shear quality show that the negative offset plays an important role in ensuring the stability of pure rolling shear and keeping blade clearance constant.
Abstract��According to the revised Cailikefu��s rolling shear force formula, motion path equation of spatial seven��bar path was built, and a mechanical model, with the new structural feature of negative offset, was thus successfully established for 2 800 mm heavy shear of some iron and steel company. Shear and bar forces of steel plate, before and after the adoption of negative offset structure, were analyzed, as well as horizontal force component of mechanism that influences pure rolling shear and back��wall push force that keeps blade clearance. It was found that the back��wall push force keeps large even at the time that the maximum rolling shear was obtained; meanwhile, back��wall push force is the most approximate to side forces when 60-100 mm of offset was adopted. Both theoretical results and on��site shear quality show that the negative offset plays an important role in ensuring the stability of pure rolling shear and keeping blade clearance constant.
MA Li��feng;HUANG Qing��xue;WANG Jian��mei;YANG Jian��wei;LI Ying;LI Jin��bao. Mechanical Properties of New Type Negative Offset Structure During Shearing Process of Heavy Steel Plate[J]. �й������ڿ���, 2007, 14(5): 31-0.
MA Li��feng;HUANG Qing��xue;WANG Jian��mei;YANG Jian��wei;LI Ying;LI Jin��bao. Mechanical Properties of New Type Negative Offset Structure During Shearing Process of Heavy Steel Plate. Chinese Journal of Iron and Steel, 2007, 14(5): 31-0.
2007, Vol. 14 
