Tool-Path Generation for Conical Groove of Cylindrical Cams by Small-Sized Cutting Tools

Abstract:

Instead of 2D expanding diagram method, this paper presents a new regenerating method for cutter location paths of using smaller tools to produce cylindrical cams. According to the expected motions, cams are put to use in various applications in mechanism. For a cylindrical cam, the roller follower operates in a groove cut on the periphery of an end mill with the diameter same as the roller. By using the conventional method, full-sized cutting tools, will restrict the flexibility of choosing cutting tools for wide roller guide. The manufacture of cylindrical cams is complicate and precise work that depends on the generating method and types of machine tools employed. Since the guiding curve cannot be offset exactly along the cylindrical surface, this leads to some approximating problems. Though the tool-paths generation by using the same size tools as rollers is applied in practice, the study of NC program by unequal tools is not available to meet high precision requirement. This proposed 3D offset-based generating method can regenerate tool-paths for standard cutting tools instead of larger ones and implemented on computerized CAM system. Examples with wider grooves are demonstrated to prove its effectiveness.

• Periodical: Advanced Materials Research (Volumes 189-193)
• Pages: 3046-3049
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.189-193.3046
• Online since: February 2011
• Authors: Jui Pin Hung, Kuan Lin Chiu, Yuan Lung Lai
• Keywords: Cylindrical Cam, Groove, Offset, Tool Path

References

[1] G.F. Yin, G.Y. Tian, D.A. Taylor: Web-Based Remote Cooperative Design for Spatial Cam Mechanisms. International Journal of Advanced Manufacturing Technology 2002; 20(8): 557-563.

DOI: 10.1007/s001700200191

[2] R.S. Lee, J.N. Lee: A New Method of Tool Orientation Determination by Enveloping Element for 5-axis Machining of Spatial Cam. Intnational Journal Production Ressearch 2002; 40(10): 2379-2398.

DOI: 10.1080/00207540210134498

[3] J.N. Lee, R.S. Lee: Interference-free toolpath generation using enveloping element for five-axis machining of spatial cam. Journal of Materials Processing Technology 2007; 187-188(12): 10-13.

DOI: 10.1016/j.jmatprotec.2006.11.200

[4] C. Lartigue, E. Duc, A. Affouard: Tool path deformation in 5-axis flank milling using envelope surface. Computer-Aided Design 2003; 35(4): 375-382.

DOI: 10.1016/s0010-4485(02)00058-1

[5] H. Gong, N. Wang: Optimize tool paths of flank milling with generic cutters based on approximation using the tool envelope surface. Computer-Aided Design, 2009; 41(12): 981-989.

DOI: 10.1016/j.cad.2009.06.013

[6] C.J. Chiou: Accurate tool position for five-axis ruled surface machining by swept envelope approach. Computer Aided Design, 2004; 36(10): 967-974.

DOI: 10.1016/j.cad.2003.10.001

[7] J. Senatore, F. Monies, J.M. Redonnet, W. Rubio: Analysis of improved positioning in five-axis ruled surface milling using envelope surface. Computer Aided Design 2005; 37(10): 989-998.

DOI: 10.1016/j.cad.2004.09.002

[8] J. Senatore, F. Monies, J.M. Redonnet, W. Rubio: Improved positioning for side milling of ruled surface: Analysis of the rotation axis's influence on machining error. International Journal of Machine Tools & Manufacture 2007; 47: 934 45.

DOI: 10.1016/j.ijmachtools.2006.07.008