Spiral tool path generation for CNC machining using cloud of points

Mandeep Dhanda, Aman Kukreja, S. S. Pande

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding

Abstract

This paper presents a new method to generate an adaptive spiral tool path for 3-axis CNC machining of the complex freeform surface directly from its representation in the form of the point cloud. The algorithm first constructs the uniform 2D circular mesh-grid to compute the Z (CL) points by applying the tool inverse offset method (IOM). Adaptive grid refinement is carried out iteratively until the surface form errors converge below the prescribed tolerance limits in both circumferential (forward) and radial (step) directions. Adaptive CL points are further refined to minimize the no. of tool lifts and generate an optimum sequence of machining regions. The optimized CL points are post-processed to generate the final CNC part programs in the ISO format. The part programs generated by our algorithm were extensively tested for various case studies using the commercial CNC simulator. The results were compared with those from the commercial CAM software. Our system was found to generate more efficient tool paths in terms of enhanced productivity, part quality, and reduced memory requirement.

Original languageEnglish
Title of host publication40th Computers and Information in Engineering Conference (CIE)
PublisherThe American Society of Mechanical Engineers(ASME)
ISBN (Electronic)9780791883983
DOIs
Publication statusPublished - 3 Nov 2020
EventASME 2020 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC-CIE 2020 - Virtual, Online
Duration: 17 Aug 202019 Aug 2020

Publication series

NameProceedings of the ASME Design Engineering Technical Conference
Volume9

Conference

ConferenceASME 2020 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC-CIE 2020
CityVirtual, Online
Period17/08/2019/08/20

Bibliographical note

Funding Information:
The financial support received by the first author from the NCAIR (National Centre for Aerospace Innovation and Research) of IIT Bombay-India is gratefully acknowledged.

Keywords

  • CNC Tool Path generation
  • Grid-based adaptive spiral strategy
  • The cloud of points

ASJC Scopus subject areas

  • Mechanical Engineering
  • Computer Graphics and Computer-Aided Design
  • Computer Science Applications
  • Modelling and Simulation

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