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Introduction
Geometric modeling of three-dimensional structures and generating the related numerical control (NC) programs are essential in the molding process. Traditional manual operations have been replaced by modern machining technologies, such as computer numerical control (CNC) and direct numerical control (DNC). With the rapid development of computer supported engineering, computer-aided design (CAD) and computer-aided manufacturing (CAM) have become the most widely used methods in the machinable process. Especially, the application of NUGNX in the machinable process has significantly improved fabrication efficiency and quality. In this paper, the application of NUGNX in the design and NC programming of machinable coverparts and mold are presented in detail.
Background
NX is an integrated design system, which is the successor of Unigraphics, one of the most widely used 3D CAD/CAM/CAE systems. The comprehensive capabilities of NX include design, engineering analysis, manufacturing, simulation, and collaboration processes. With the help of NX, advanced surface modeling, free form solid modeling, direct modeling, mold design, manufacturing process simulations, and NC programming can be all accomplished.
The purpose of this paper is to analyze the advantages and applications of NUGNX in the machinable process. In particular, the authors will discuss the module of NUGNX which is used in machinable design, 3D machining, NC programming, and other related processes.
Design of Machinable Coverparts and Mold
NX provides powerful mold design and parametric modeling functions to meet the design requirements of machinable coverparts and molds. NX offers various types of parametric features, such as basic features, extended features, and hybrid features, which can be used to create broadly varied component models. NX also supports NX Product Design to produce more perfect designs by utilizing tolerance design, which allows designers to quickly adapt design to meet changing requirements. Furthermore, NX Advanced Assembly Modeling is introduced to better represent the relationships between parts and sub-assemblies. This module helps to refine the structure of the components and further optimize the machinable process.
3D Machining
NX provides an intuitive CAM and NC programming environment to achieve high performance model making. NX offers a comprehensive suite of applications that not only support the basic drilling, boring, milling, and turning operations, but also the more sophisticated operations such as 3D engraving, 5-axis surface machining, sinker machining and pocket machining. The milling capabilities in NX are based on precise tolerance control and excellent machining performance. NX ensures perfect cut quality by providing correct and efficient tool path generation.
NC Programming
NX provides a graphical user interface to create and edit programmable commands for NC programming. The NC programming in NX does not only support 3 axis machining, but also 5 axis machining in both vertical and horizontal orientations. NX supports automatic tool path calculation to quickly and accurately generate tool paths based on the defined input parameters. NX also offers various post-processing capabilities to easily export machining programs to the control systems without additional manual processing.
Conclusion
NX provides a comprehensive solution for the machinable process, from design to NC programming. NUGNX provides powerful functionality to design and manufacture complex machinable coverparts and molds efficiently and accurately. NX CAM supports 3D and 5 axis machining operations with the highest level of quality. Additionally, the NC programming in NX improves programmability and helps to make better use of available resources. With the help of NX, the design, fabrication and machining of machinable components become faster, easier and better.
