TY - JOUR
T1 - An approach to strip-maximization machining based on tolerance constraints for sculptured surfaces
AU - Yang, Jianhua
AU - Zhang, Dinghua
AU - Zhang, Juan
AU - Wu, Baohai
PY - 2013/2/5
Y1 - 2013/2/5
N2 - To improve the efficiency of complex surfaces machining with toroidal tools, an approach about the tool path planning of strip-maximization machining is proposed by combining with the design tolerance zone. According to second-order Taylor approximation method, the strip width within the entire tool path is calculated, and then its adjustability is assessed based on the predefined strip-width-ratio threshold. For these adjustable tool path, the cutting contact points(CCPs) which decrease the strip width are analyzed. Each point of them is transformed into another actual CCP with a reasonable translation distance along the normal vector on the corresponding surface, where the value is in the constraints of tolerance zone. Thus the optimal strip-width is obtained. The influence analysis of strip-width from surface characteristic indicates that the theory based on the tolerance constraints is versatile. Example shows that the strip-width calculated by the proposed method is significantly expanded by 26.5%, comparing to second-order Taylor approximation method. Meanwhile, the length of the CCPs path is shortened by 22.7%. Therefore, the simulation result verifies the effectiveness in the complex surface machining with toroidal cutters.
AB - To improve the efficiency of complex surfaces machining with toroidal tools, an approach about the tool path planning of strip-maximization machining is proposed by combining with the design tolerance zone. According to second-order Taylor approximation method, the strip width within the entire tool path is calculated, and then its adjustability is assessed based on the predefined strip-width-ratio threshold. For these adjustable tool path, the cutting contact points(CCPs) which decrease the strip width are analyzed. Each point of them is transformed into another actual CCP with a reasonable translation distance along the normal vector on the corresponding surface, where the value is in the constraints of tolerance zone. Thus the optimal strip-width is obtained. The influence analysis of strip-width from surface characteristic indicates that the theory based on the tolerance constraints is versatile. Example shows that the strip-width calculated by the proposed method is significantly expanded by 26.5%, comparing to second-order Taylor approximation method. Meanwhile, the length of the CCPs path is shortened by 22.7%. Therefore, the simulation result verifies the effectiveness in the complex surface machining with toroidal cutters.
KW - Sculpture surface
KW - Second-order Taylor approximation method
KW - Strip-maximization machining
KW - Tolerance constraints
KW - Toroidal tool
UR - http://www.scopus.com/inward/record.url?scp=84875307817&partnerID=8YFLogxK
U2 - 10.3901/JME.2013.03.130
DO - 10.3901/JME.2013.03.130
M3 - 文章
AN - SCOPUS:84875307817
SN - 0577-6686
VL - 49
SP - 130
EP - 136
JO - Jixie Gongcheng Xuebao/Journal of Mechanical Engineering
JF - Jixie Gongcheng Xuebao/Journal of Mechanical Engineering
IS - 3
ER -