Circumferential fixed-width cutting path planning method for rough machining of integrated impeller

• Main Authors: YAN LONGZHI, TANG XIANGWU, DING HAN, YAN SIJIE, DAI XING
• Format: Patent
• Language: English
• Published: 03.06.2015
• Subjects: CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING

The invention discloses a circumferential fixed-width cutting path planning method for the rough machining of an integrated impeller. The method comprises the following steps: generating a tool path source file of an axial cutting tool path, and analyzing position coordinates and a tool axis vector of each tool position point; equally dividing the axial cutting tool path into delta according to an axial width; interpolating circumferential cutting tool paths between the corresponding equal dividing tool position points on the axial cutting tool path; calculating a tool position point top rake tendency of each circumferential cutting tool path, and determining feeding points and retraction points on the basis of the tool position point top rake tendencies; interpolating a lowering point and a lifting point of each circumferential cutting tool path; interpolating a connecting tool path between every two adjacent circumferential cutting tool paths; connecting the axial cutting tool path with each circumferential cutting tool path to obtain an integrated cutting path according to a cutting sequence. According to the planning method, by the cutting path for the rough machining of the integrated impeller, the phenomenon of tool path redundancy is avoided, high effective cutting rate is achieved, a cutting tool is kept in a positive top rake cutting state most of the time, abrasion can be effectively reduced, and the cutting tool can be protected.