An efficient tool-path planning approach for repair of cylindrical components via laser cladding

Author(s):  
Habiba Zahir Imam ◽  
Yufan Zheng ◽  
Rafiq Ahmad
Author(s):  
Mandeep Dhanda ◽  
S. S. Pande

This paper reports the development of an efficient tool path planning strategy for CNC machining of freeform surfaces directly from their representation in the form of point cloud. A grid based adaptive isoplanar tool path planning system has been designed and implemented for 3axis CNC machine using ball end mill. Inverse tool offset algorithm (IOM) is used to compute initial uniform CL (Cutter Location) grid points. From these CL points, surface slope and curvature are estimated and the forward and side step errors likely to be produced during machining are computed. The grid is subsequently refined through segmentation if the error values exceed the user defined tolerances. Adaptive grid refinement is continued iteratively till the error values converge below the prescribed tolerance limits. The grid (CL) points are sequenced to generate the final tool path. The software system developed takes the input part model as point cloud and generates post-processed CNC part program in the ISO format. The CNC part programs were extensively tested for various case studies on the commercial CNC simulator as well on the actual CNC machine. The results were compared with those from the commercial software for the same process conditions. Our system was found to generate more efficient tool paths in terms of enhanced productivity, part quality and reduced memory requirement.


1996 ◽  
Vol 118 (1) ◽  
pp. 20-28 ◽  
Author(s):  
Rong-Shine Lin ◽  
Y. Koren

This paper presents an analytical method for planning an efficient tool-path in machining free-form surfaces on 3-axis milling machines. This new approach uses a nonconstant offset of the previous tool-path, which guarantees the cutter moving in an unmachined area of the part surface and without redundant machining. The method comprises three steps: (1) the calculation of the tool-path interval, (2) the conversion from the path interval to the parametric interval, and (3) the synthesis of efficient tool-path planning.


Procedia CIRP ◽  
2021 ◽  
Vol 104 ◽  
pp. 918-923
Author(s):  
Tristan Schäfer ◽  
Jim A. Bergmann ◽  
Rafael Garcia Carballo ◽  
Jakob Rehof ◽  
Petra Wiederkehr

2011 ◽  
Vol 49 (6) ◽  
pp. 1557-1574 ◽  
Author(s):  
Chih-Hsing Chu ◽  
Cheng-Ta Lee ◽  
Kai-Wen Tien ◽  
Ching-Jung Ting

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