Transformation of Three-Axis Tool Path to Inclined Plane for Five-Axis Machining

2013 ◽  
Vol 716 ◽  
pp. 614-619
Author(s):  
Chen Hua She ◽  
Zhi Hao Zheng
Keyword(s):  
Machine Tool ◽  
Tool Path ◽  
Control Program ◽  
Simulation Software ◽  
Numerical Control ◽  
Inclined Plane ◽  
Nc Program ◽  
Cad Cam ◽  
Five Axis ◽  
Very High

Manufacturing industries such as the aerospace industry and the molding industry need to process products of complex and high-precision curved surface. Multi-axis machine tool with two rotational axes plays an indispensable role in processing such products. However, in a fiercely competitive market, each manufacturer is devoted to reduce processing time and costs. Therefore, how to efficiently create multi-axis numerical control program has become an important issue. Typical multi-axis machining parts often have specific machining features such as hole, groove or even engraved text on the inclined plane. Although the tool path can be generated by the advanced multi-axis CAD/CAM system, the prices of such systems are very high. This study proposed a methodology for defining the inclined working plane of the multi-axis machining tool. According to the defined working coordinate system proposed in this study, the tool path files of the traditional three-axis machine tool can be transformed to the five-axis NC program through post-processing calculation. As a result, the required NC program can be obtained for the same machining feature on any inclined plane in shorter time. Finally, this study tested and confirmed the accuracy of the numerical control program by solid cutting simulation software.

Numerical Control Programming System for Mill-Turn Machining

2015 ◽  
Vol 799-800 ◽  
pp. 1154-1157
Author(s):  
Chen Hua She ◽  
Jian Yu Lin ◽  
Shen Yung Lin
Keyword(s):  
Computer Aided Design ◽  
Tool Path ◽  
Geometric Model ◽  
Control Program ◽  
Simulation Software ◽  
Numerical Control ◽  
Programming System ◽  
Nc Program ◽  
Machining System ◽  
The Cost

To develop the numerical control program of mill-turn machine, the traditional method is to apply the computer-aided design and manufacture software to construct the geometric model, then to generate tool path and convert the path to NC program. For complex numerical control program of mill-turn machine, such as the multiple turret synchronized motion machining, because of the need to control time sequence, the NC program is highly required on using of dedicated software system. The objective of this paper is to establish a mill-turn machining system with window interface of via the language of Borland C++ Builder. The developed system can plan the machining path of simple mill-turn features, including turning shape, axial slot milling, and radial packet milling, and generate the corresponding NC program. For the milling functions, after the offset coordinates are calculated along the polygonal angle vector in the center point of cutters, the NC program is generated. For the turning functions, through importing the 2D DXF (Drawing Exchange Format) file and inputting related configurations, the entity coordinates can be retrieved and the corresponding NC program is then converted. By means of the solid cutting simulation software and practical cutting experiment for the generated numerical control program, the accuracy of the tool path generation algorithm is confirmed. Hence, the cost of purchasing commercial software can be saved and the time of generating program can also be decreased so that the working efficiency can be enhanced.

An Integrated Approach of CAD/CAM for Spatial Cam with Oscillating Cylindrical Rollers

2011 ◽  
Vol 201-203 ◽  
pp. 318-325 ◽  
Author(s):  
Jeng Nan Lee ◽  
Ying Chien Tsai ◽  
Hung Shyong Chen ◽  
Huang Kuang Kung
Keyword(s):  
Control Program ◽  
Integrated Approach ◽  
Geometric Error ◽  
Numerical Control ◽  
Machining Process ◽  
Principal Curvatures ◽  
Nc Program ◽  
Real Material ◽  
Cad Cam ◽  
Five Axis

In this paper, an integrated approach of CAD/CAM was presented for the spatial cam with oscillating cylindrical rollers. The relationship between the cam profiles and the meshing element’s surface is established by the conjugate surface theory. In the machining process, the cutter location for the rough and the finish machining using cylindrical-end mill is derived. To avoid interference, the principal curvatures and the principal induced normal curvatures between the cam surface and the cutting tool are analyzed. The geometric error was used as a basis for generating appropriate toolpaths. The postprocessor are developed for converting the cutter location file to the five-axis numerical control program. The generated NC program is verified before actual machining through solid cutting simulation. In order to demonstrate the applicability of the presented method, cam profile was cut using a five-axis machine tool with real material.

Tool Path Geometry for Multi-Axis Kinematics Conversion in CAD-CAM Integration

1992 ◽  
Author(s):  
Jui-Jen Chou ◽  
D. C. H. Yang
Keyword(s):  
Machine Tool ◽  
Tool Path ◽  
Cad Model ◽  
Geometrical Properties ◽  
Time Dependent Domain ◽  
Arbitrary Space ◽  
Cad Cam ◽  
Tool Motion ◽  
And Control ◽  
Five Axis

Abstract In the integration of CAD and CAM, it is necessary to relate machine tool kinematics and control in a CAM process to the geometrical data in a CAD model. The data stored in a CAD model is usually static in nature and represented by unitless parameters. Yet, in machine tool motion and control, the data should be transformed into a time dependent domain. In this paper, a general theory on the conversion from desired paths to motion trajectory is analytically derived. The geometrical properties of a desired path, including position, tangent, and curvature are related to the kinematics of coordinated motion including feedrate, acceleration, and jerk. As a result, the motion commands used as control references to track arbitrary space curves for five-axis computer-controlled machines can be generated in a rather straight-forward as well as systematic way.

Tool Path Planning and NC Generation of Tilted Plane Machining Features for Five-Axis Machining

2011 ◽  
Vol 697-698 ◽  
pp. 309-313 ◽  
Author(s):  
Chen Hua She ◽  
Yueh Hsun Tsai
Keyword(s):  
Machine Tool ◽  
Degrees Of Freedom ◽  
Tool Path ◽  
Simulation Software ◽  
Free Form ◽  
Parent Child Relationship ◽  
Machining Feature ◽  
Machining Errors ◽  
Tilted Plane ◽  
Five Axis

Designs of free-form surface products are becoming increasingly complex. In traditional three-axis machine tool machining, errors that are caused by repetitive positioning and the costs of fixture jig design and manufacturing are critical. Since multi-axis machining provides two more rotational degrees of freedom than a three-axis machine tool, the former can solve these problems, and has therefore become the trend of precision cutting. As multi-axis machined parts often have holes and grooves on the tilted plane, this work proposes a method for machining tilted working plane features and for NC generation on a five-axis machine. The developed module can provide common geometric features, allowing the user to alter the machining feature and sequence on the tilted plane quickly using the parent-child relationship in a tree diagram, and plan the tool path. The postprocessor module developed in this paper can transform the tool path into an NC program required for machining. Finally, solid cutting simulation software is utilized to confirm the feasibility and correctness of the tool path and NC data of the tilted plane machining feature.

Toolpath Planning and Simulation for Cutting Test of Non-Orthogonal Five-Axis Machine Tool

2014 ◽  
Vol 625 ◽  
pp. 402-407
Author(s):  
Jeng Nan Lee ◽  
Chen Hua She ◽  
Chyouh Wu Brian Huang ◽  
Hung Shyong Chen ◽  
Huang Kuang Kung
Keyword(s):  
Machine Tool ◽  
Simulation Software ◽  
Nc Code ◽  
Location Data ◽  
Toolpath Planning ◽  
Cutting Test ◽  
Cad Cam ◽  
Machining Test ◽  
Universal Spindle ◽  
Five Axis

Owing to NAS 979 describes a cutting test for five-axis machine center with a universal spindle, several conditions for C-type machine tool have not been defined yet. This paper proposes a cutting test for a non-orthogonal swivel head and a rotary table type five-axis machine tool (C type) to evaluate its performance. The workpiece consists of 10 machining features. These features include the multi-axis simultaneous machining patterns and the positioning machining patterns. The flat end mill cutters are applied in each machining feature. Cutter location data for the test piece was generated using a commercial CAD/CAM system (UG) and converted to five-axis NC code using a postprocessor created in UG Post Builder. This UG postprocessor is verified through the developed postprocessor utilizing the modified D-H notation. It is also verified using VERICUT® solid cutting simulation software demonstrated the veracity of the generated five-axis NC code. The machining test is applicable for a variety of five-axis machine tool configurations.

Tool Path Simulation Software with Ultra-Precision Grind for Aspherical Elements

2007 ◽  
Vol 10-12 ◽  
pp. 488-492
Author(s):  
Hui Feng Wang ◽  
Guang Lin Wang ◽  
Ze Sheng Lu
Keyword(s):  
Tool Path ◽  
Nc Machining ◽  
Simulation Software ◽  
Numerical Control ◽  
Machining Efficiency ◽  
Control Code ◽  
Nc Program ◽  
Ultra Precision

It is very important to improve machining efficiency and ensure manufacture quality through testing NC program of aspherical elements machining with simulation software. For ultra -precision NC machining tool, we analyzed the tool path of ultra-precision grind for aspherical elements, edited a simulation software of the path, got a structural chart of the software, analyzed some important module of the software. In fact the software is able to imitate tool path, test the correctness of numerical control code according to numerical control code edited.

Five-Axis NC Program Conversion for Inclined Plane Machining

2013 ◽  
Vol 479-480 ◽  
pp. 333-337
Author(s):  
Hsin Yu Cheng ◽  
Yung Chou Kao
Keyword(s):  
Machining Processes ◽  
Inclined Plane ◽  
Nc Programming ◽  
Nc Program ◽  
Cad Cam ◽  
Hole Making ◽  
Inclined Angle ◽  
Contour Machining ◽  
Five Axis

Machining processes on an inclined plane include mostly hole making, profiling, and pocketing. It comprises of 80% - 90% cutting process in five-axis machining and is therefore very important in multi-axis machining work. However, five-axis machining processes are normally difficult to introduce and to use because five-axis CAD/CAM and post-processor are normally demanded to generate five-axis NC program even though it is for the 2D contour machining on a plane with inclined angle. Therefore, this paper studies the inclined plane machining methods and extends traditional three-axis milling machining processes and methods so as to directly convert 2-1/2 and three-axis NC program into five-axis machining program to ease the application of five-axis machining processes. This study integrates the developed three-axis NC program interpreter, inclined plane coordinates transformation, and post-processor to simply the inclined plane NC programming. Two-dimensional NC program on a plane can be converted into five-axis NC program on the inclined-plane by the proposed methodology. Case study has been utilized to verify the utilization and correctness of the proposed methodology

A New Architecture of Tool Path Generation for Five-Axis Control Machining

2005 ◽  
Vol 291-292 ◽  
pp. 501-506 ◽  
Author(s):  
K. Nakamoto ◽  
K. Shirase ◽  
Akifumi Morishita ◽  
E. Arai ◽  
T. Moriwaki
Keyword(s):  
Machine Tool ◽  
Real Time ◽  
Manufacturing Systems ◽  
Tool Path ◽  
Cutting Parameters ◽  
Tool Paths ◽  
Nc Program ◽  
Digital Copy ◽  
Copy Milling ◽  
Five Axis

NC machine tools, which are widely employed in manufacturing systems, are basically driven by NC programs. However, it requires extensive amount of time and efforts to generate high quality tool paths before a machining operation. An NC program for five-axis control machining is more difficult to generate because the motion of machine tool is more complicated. In this paper, a new architecture is proposed to autonomously control the machine tool without an NC program for more rapid and flexible machining. A technique called digital copy milling is developed to generate the tool paths in real time based on the principle of copy milling. It means that the cutting parameters can be adaptively controlled in order to maintain stable cutting process and to avoid the cutting troubles. In the experimental verification, the improved digital copy milling system for five-axis control milling successfully detected and avoided tool collision in real-time.

Virtual Processing Research on Auto Control Valve Cylinder Mold

2011 ◽  
Vol 201-203 ◽  
pp. 180-184
Author(s):  
Ping Xu ◽  
Kun Peng Ma ◽  
Shao Feng Wang
Keyword(s):  
Machine Tool ◽  
Virtual Machine ◽  
Control Valve ◽  
Simulation Software ◽  
Numerical Control ◽  
Control Machine Tool ◽  
Control Programs ◽  
Virtual Machine Technology ◽  
Cad Cam ◽  
Cam Software

Especially from the perspective of geometric simulation, through the combination of CAD/CAM software Pro/e with professional numerical control machine tool simulation software Vericut, achieve the virtual processing of cylinder mold. Numerical control programs will be transferred to the virtual machine tool, producing products meet the requirements. Proving the combination of Pro/e and Vericut for the research of virtual machine technology is a possible method.

Development of a Web-Based Virtual Five-Axis Milling Toolpath Simulation System

2013 ◽  
Vol 284-287 ◽  
pp. 1816-1820 ◽  
Author(s):  
Yung Chou Kao ◽  
Mau Sheng Chen ◽  
Tzu Hao Chiu
Keyword(s):  
Machine Tool ◽  
Simulation System ◽  
Milling Machine ◽  
Web Based ◽  
Agent Based ◽  
Runtime Environment ◽  
Nc Program ◽  
Cad Cam ◽  
Promising Application ◽  
Five Axis

Virtual machine tool has been used in the toolpath simulation of a real machine tool with very promising achievement in teaching assistance. However, a five-axis milling machine is generally very expensive in comparison with traditional three-axis milling machine in its configuration. This is mostly resulted from the addition of two more rotational axes in five-axis machine. This paper focuses on the development of a Web-based five-axis milling machining toolpath simulation system so as to facilitate the comprehensive understanding of students and to ease the explanation of operations. A user can access the developed system through the web browsers such as the Microsoft Internet Explorer and Google Chrome as long as the Java Runtime Environment and OpenGL are installed. Three general configurations of five-axis milling machine tool have been implemented including Head-Head, Head-Table, and Table-Table. Furthermore, five-axis post-processing is generally a bottleneck in the popularization of toolpath simulation. An intelligent distributed agent-based post-processor has been integrated in this system. For example, an APT file created by the usage of Catia CAD/CAM software according to a five-axis toolpath could be post-processed by the developed system for the generation of a five-axis NC program. This NC program could then be simulated in the proposed system. The developed system has been successfully implemented and shown very promising application in the understanding of five-axis milling operation.

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