Simulation of normal machining of 3D free-form surface by an orthogonal 3-leg parallel machine tool with 5-DOF

A novel orthogonal 3-leg parallel machine tool (PMT) with 5 DOFs is designed for normal machining a 3D free-form surface s. A CAD variation geometry approach is adopted for pre-solving the extension/rotation of the linear/rotational actuators and the pose of this PMT. First, a simulation mechanism of this PMT is created by using the CAD variation geometry technique. Second, a s and a guiding plane of the tool path are constructed, the tool axis of the PMT is kept perpendicular to s, and then a simulation PMT is created. Third, in the light of the two kinds of prescribed tool paths, the extension/rotation of the linear/rotational actuators and the pose of the PMT are pre-solved automatically and visualized dynamically.

[1]  Jean-Yves Hascoët,et al.  Qualification of parallel kinematics machines in high-speed milling on free form surfaces , 2004 .

[2]  Byoung Kyu Choi,et al.  Guide surface based tool path generation in 3-axis milling: an extension of the guide plane method , 2000, Comput. Aided Des..

[3]  Prakash Krishnaswami,et al.  Automated process planning method to machine A B-Spline free-form feature on a mill-turn center , 2009, Comput. Ind. Eng..

[4]  Yi Lu,et al.  Analysis of Stiffness and Elastic Deformation for Some 3–5-DOF PKMs With SPR or RPS-type legs , 2008 .

[5]  Lu Yi,et al.  Computer-aided geometric machining of a 3D free surface using a 3-UPU spatial parallel machine tool , 2005 .

[6]  Lu Yi,et al.  A computer simulation approach to machining complicated shapes, on an orthogonal 6-rod machine tool , 2002 .

[7]  M. Hu,et al.  A study on the kinematics and dynamics of a 3-DOF parallel machine tool , 2001 .

[8]  C. Gosselin,et al.  Kinetostatic Modeling of N-DOF Parallel Mechanisms With a Passive Constraining Leg and Prismatic Actuators , 2001 .

[9]  Wei-Yao Hsu,et al.  Design and analysis of a tripod machine tool with an integrated Cartesian guiding and metrology mechanism , 2004 .

[10]  Chengyin Yuan,et al.  Development of a high-speed 3-axis machine tool using a novel parallel-kinematics X-Y table , 2004 .

[11]  Sudhir P. Mudur,et al.  Generation of continuous smooth curves resulting from operations on parametric surface patches , 1986 .

[12]  Sang C. Park,et al.  Tool-path generation for sidewall machining , 2009, Comput. Ind. Eng..

[13]  Taejung Kim,et al.  Toolpath generation along directions of maximum kinematic performance; a first cut at machine-optimal paths , 2002, Comput. Aided Des..

[14]  Kuang-Chao Fan,et al.  Identification of strut and assembly errors of a 3-PRS serial-parallel machine tool , 2004 .

[15]  Rasim Alizade,et al.  Structural synthesis of parallel manipulators , 2004 .

[16]  Hui Zhao,et al.  New kinematic structures for 2-, 3-, 4-, and 5-DOF parallel manipulator designs , 2002 .

[17]  Gerald Farin,et al.  Curves and surfaces for computer aided geometric design , 1990 .

[18]  Mikael Bäckström,et al.  A direct comparison of the machining performance of a variax 5 axis parallel kinetic machining centre with conventional 3 and 5 axis machine tools , 2003 .

[19]  Yi Lu.  Using CAD variation geometry for solving velocity and acceleration of parallel manipulators with 3-, 4-, 5-linearly driving limbs , 2006 .

[20]  Yi Lu,et al.  Computer simulation machining a 3D free surface by using a 3-RPRU parallel machine tool , 2007 .

[21]  Syed H. Masood,et al.  A computerised minimum distance algorithm for machining of sculptured surfaces , 2002 .

[22]  Yuefa Fang,et al.  Structure Synthesis of a Class of 4-DoF and 5-DoF Parallel Manipulators with Identical Limb Structures , 2002, Int. J. Robotics Res..

[23]  P. J. Hartley,et al.  Parametrization and shape of B-spline curves for CAD , 1980 .

[24]  Yi Lu.  Using CAD functionalities for the kinematics analysis of spatial parallel manipulators with 3-, 4-, 5-, 6-linearly driven limbs , 2004 .

[25]  Kuang-Chao Fan,et al.  Sensitivity analysis of the 3-PRS parallel kinematic spindle platform of a serial-parallel machine tool , 2003 .

[26]  Kornel Ehmann,et al.  Calibration of a hexapod machine tool using a redundant leg , 2000 .

[27]  Yi Lu,et al.  Computer simulation applied to an orthogonal three-rod machine tool for machining a complicated three-dimensional surface , 2002 .

[28]  F. Pierrot.  Modelling and design issues of a 3-axis parallel machine-tool , 2002 .

[29]  Mario T. Tabucanon,et al.  On the tool-path optimization of a milling robot , 2002 .