A new method for the generation of tool paths for finishing near net shape components

Edgar A. Mendoza López, Hugo I. Medellín Castillo, Dirk F. De Lange, Theo Lim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The CNC machining has been one of the most recurrent processes used for finishing NNS components. This paper presents a new method for the generation of tool paths for machining 3D NNS models. The proposed approach comprises two machining stages: rough cut and finish cut, and three types of cutting tools: ball-end mill, flat-end mill and fillet-end mill. The proposed tool path generation algorithm is based on: (1) approximation of the model surfaces by points using slice planes and visibility analysis, (2) accessibility analysis of the tool, (3) approximation error and tolerance evaluation, (4) collision analysis of tool and tool holder. The tools paths generated are exported as a CNC program. The implementation was carried out in C++ using the ACIS® geometric modeling kernel to support the required geometric operations. To prove the effectiveness of the system several models with variable geometric complexity were tested. The results have shown that the proposed system is effective and therefore can be used to generate the tool paths required for finishing 3D NNS components.

Original languageEnglish
Title of host publicationAdvanced Manufacturing
PublisherAmerican Society of Mechanical Engineers
ISBN (Print)9780791856185
DOIs
Publication statusPublished - 2 Apr 2014
EventASME 2013 International Mechanical Engineering Congress and Exposition - San Diego, United States
Duration: 15 Nov 201321 Nov 2013

Publication series

NameProceedings of the ASME 2013 International Mechanical Engineering Congress and Exposition
Volume2A

Conference

ConferenceASME 2013 International Mechanical Engineering Congress and Exposition
Abbreviated titleIMECE 2013
CountryUnited States
CitySan Diego
Period15/11/1321/11/13

Keywords

  • CNC machining
  • Finishing
  • Near net shape
  • Roughing
  • Tool path generation

ASJC Scopus subject areas

  • Mechanical Engineering

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