Comparative study of tool path strategies in CNC machining for part with B-spline surfaces

Zainal Fahmi, Zainol Abidin and M. Nafis, O. Z. (2020) Comparative study of tool path strategies in CNC machining for part with B-spline surfaces. In: iMEC-APCOMS 2019: Proceedings of the 4th International Manufacturing Engineering Conference and The 5th Asia Pacific Conference on Manufacturing Systems , 21-22 August 2019 , Putrajaya, Malaysia. pp. 564-569.. ISBN 978-981-15-0950-6

Comparative Study of Tool Path Strategies in CNC1-1.pdf

Download (35kB) | Preview
[img] Pdf
Comparative Study of Tool Path Strategies in CNC.pdf - Accepted Version
Restricted to Repository staff only

Download (197kB) | Request a copy


CNC machines are widely used in production of various machinery components including turbine blades, impellers, rotors, propellers etc. Most of these components are built-up from free form surfaces which considered complex shapes and required proper set up for machining. This paper presents optimization of toolpath pattern for cutting parts with B spline surfaces in 4 axis machining. Generally the operation is carried out by using 4 axis machining methods which employs variable streamline operations in the finishing process. The appropriate selection of a toolpath pattern can significantly improve productivity and lead to lower production times. Different toolpath scenarios are simulated in CADCAM prior to real cutting process. In order to execute the comparative study of tool path strategies, all common cutting parameters (spindle speed, feed rate, tool diameter, plunge-rate, and depth of cut) are set to be constant. The toolpath strategies employed in this study includes helical or spiral, zig, zigzag and zigzag with lift. Cutting operation built-up and validation are performed through NX10, VERICUT and CNC machining. The objective is to optimize the machining process for B-spline model by selecting the shortest toolpath with maximum volume removal based on using variable streamline operation. The result indicates different tool path strategies based on the level of B spline curvature exhibit in the component.

Item Type: Conference or Workshop Item (Lecture)
Additional Information: Part of the Lecture Notes in Mechanical Engineering book series (LNME)
Uncontrolled Keywords: Toolpath pattern, B-Spline, Free-form surface.
Subjects: T Technology > TS Manufactures
Faculty/Division: Faculty of Manufacturing Engineering
Institute of Postgraduate Studies
Depositing User: Pn. Hazlinda Abd Rahman
Date Deposited: 12 Feb 2020 07:54
Last Modified: 13 Feb 2020 01:46
Download Statistic: View Download Statistics

Actions (login required)

View Item View Item