Part Localization for CNC Machining Using Discrete Point Set Approach

Chandranath, M and Raghavendra, and Suresh, R and Ravishankar, S (2014) Part Localization for CNC Machining Using Discrete Point Set Approach. In: International Conference On Trends in Product Life Cycle, Modeling, Simulation and Synthesis PLMSS-2014, 06-08 January 2014, Vellore, Tamil Nadu, India.

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Abstract

Machining of components on CNC machining centres without any datum reference or tooling hole details is a challenge and requires mapping of the CAD reference system with the CNC Machine reference system. Applying best fit alignment approach to position and orient CNC coordinate system for parts with free-form features is a subject that can be widely employed for machining of components in automobile and aircraft industry. The localization of part and fixing the coordinate system needs 3D point data set obtained from the CNC machining centre using a touch signal probe. This paper focuses on establishing the CNC coordinate system for machining of components with 3D free form surface whose datum coordinate system cannot be established because of the non availability of planar and straight surfaces for reference. The method adopted in this paper helps in accurately machining of such parts without the usage of any special fixtures. The research work aims to report some strategies that provide guidelines to select appropriate best fit techniques for achieving the machining quality in the shortest time. The best fit method adopted on CAD models for fixing of CNC Coordinate system is done using CATIA software. A shorter surface mapping time and better fitting results can be achieved by adopting the recommended techniques.

Item Type: Conference or Workshop Item (Paper)
Subjects: ENGINEERING > Engineering (General)
ENGINEERING > Mechanical Engineering
Depositing User: Sri. S Raghavendra Rao
Date Deposited: 21 Apr 2014 10:51
Last Modified: 21 Apr 2014 10:51
URI: http://nal-ir.nal.res.in/id/eprint/11945

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