The Development of an APT Program Interpreter for 5-Axis Machining

2012 ◽  
Vol 482-484 ◽  
pp. 2247-2252 ◽  
Author(s):  
Hsin Yu Cheng ◽  
Jo Peng Tsai ◽  
Yung Chou Kao
Keyword(s):  
Research Result ◽  
Value Added ◽  
Working Process ◽  
Nc Code ◽  
Cad Cam ◽  
Cutter Orientation ◽  
Advanced Machining ◽  
Five Axis ◽  
Cam Software

As there are various machine configuration and frequent changes of cutter orientation in 5-axis machining, the standard NC codes are not inter-exchangeable among machines. This phenomenon induces a lot of cutting difficulties and machining problems such as the inconvenient working process for operators and very low cutting efficiency. At present, some advanced machine controllers already can accept the APT code besides NC code to increase the cutting flexibility. They also offer some advanced machining functions such as tool center point control and spatial compensations of tool, etc. By way of APT interpreting, the common controller can also implement these advanced functions. Besides, CAD/CAM software also supports APT post-processor to generate NC code for different machine configurations. This means the application of ATP program has played an important role in five-axis machining. However, although CAD/CAM software supports the interpretation of APT program as a core key technology of five-axis machining, the manufacturers of controller with advanced functions are unwilling to open their system. Up to now, there has been few related research papers published on this topic. In this paper, we proposed an APT interpretation method for five-axis machining. This method includes seven functional modules and related implementing procedures. A case study has been adopted to demonstrate the feasibility of the proposed method. The research result could be adopted as a reference to develop the value-added technology in 5-axis machine tool application for academy and industry.

Study on CAM Software for Additive Manufacturing with FDM Method

2017 ◽  
Vol 11 (5) ◽  
pp. 835-843 ◽  
Author(s):  
Satoru Koizumi ◽  
Takehiro Kawamura ◽  
Tatsuya Mochizuki ◽  
◽  
◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Shape Model ◽  
Combination Process ◽  
Hybrid Machine ◽  
Five Axis ◽  
Cam Software

A prototype hybrid machine was manufactured by combining five-axis laminate-shaping and five-axis cutting, and a CAM was developed for additive manufacturing under simultaneous five-axis control. Using a CAD surface as a shape-model for the laminate-shaping, the reproducibility of a shape in laminate-shaping or cutting was successfully enhanced. Moreover, a combination process of laminate-shaping and cutting was successfully defined by decomposing a shape into multiple parts. The prototype machine and CAM developed were investigated in a case study, and their usability was confirmed.

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.

Teaching Experience for the Virtualization of Machine Tools and Simulation of Manufacturing Operations

2016 ◽  
Vol 853 ◽  
pp. 79-84 ◽  
Author(s):  
D. Morales-Palma ◽  
Andrés Jesús Martínez-Donaire ◽  
Gabriel Centeno ◽  
C. Vallellano
Keyword(s):  
Machine Tools ◽  
Engineering Students ◽  
Incremental Forming ◽  
Teaching Experience ◽  
Manufacturing Processes ◽  
Nc Code ◽  
Manufacturing Operations ◽  
Cad Cam ◽  
Digital Documentation ◽  
Cam Software

This work aims to generate the digital documentation related to a number of manufacturing processes on different machine tools. The project is developed with the contribution of engineering students doing their final thesis within this field. Different machine tools and machining and incremental forming processes have been virtualized by using the CAD/CAM software CATIA V5. Some of the modeled parts were finally manufactured after checking and post-processing the NC code. Digital documentation is developed on different formats (e.g. photographs, videos, images and simulations) in order to be used as a teaching complement.

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

Computer-aided Mapping for Facilities Management and Environmental Compliance A Case Study

1991 ◽  
pp. 3-15
Author(s):  
Diane C. Drigot ◽  
Margaret E. Elliott ◽  
Karen L. Glyn
Keyword(s):  
Regulatory Compliance ◽  
Third Party ◽  
Facilities Management ◽  
Military Installation ◽  
Timely Access ◽  
Cad Cam ◽  
Environmental Requirements ◽  
Cam Software ◽  
Large Municipality

As staff and budgets shrink and environmental requirements grow, facilities managers face a critical need for more timely access to geographic-based information to achieve regulatory compliance. An integrated Geographic Information System (GIS) can successfully satisfy this need for a large municipality. But for managers at smaller facilities, a full-function GIS often exceeds what is needed and affordable. Such managers can derive similar benefits with minimal staff, budget, and equipment investments by developing a microcomputerbased system, using CAD/CAM software as a mapping package linked with third-party database management software. This paper describes how a military installation in Hawai'i successfully built such a system using AutoCAD and dBase III+.

scholarly journals Development of a Tool Design Method in Cross Wedge Rolling: Description and Applications

2014 ◽  
Vol 611-612 ◽  
pp. 1694-1701
Author(s):  
Catalina Gutierrez ◽  
Philippe Mangin ◽  
Laurent Langlois ◽  
Régis Bigot
Keyword(s):  
Design Method ◽  
Stability Index ◽  
Tool Geometry ◽  
Geometrical Parameters ◽  
Cross Wedge Rolling ◽  
Know How ◽  
Cad Cam ◽  
Definition Of ◽  
Cam Software

Till now, the definition of cross wedge rolling dies requires know-how and important expertise from the designers. A decision-making methodology is being developed to provide sequential and logical steps to draw easier and faster the tool geometry. This methodology is based on designing rules found in literature that link the geometrical parameters of the desired rolled part and the geometrical parameters of the tool. Nevertheless, in the literature, the rules are not always consistent because the admissible domain for a parameter can differ from one author to another. In order to take into account this variability, a stability index is associated to each rule and to the designed tool. The methodology allows updating of the existing rules and the implementation of new rules. The set of parameters defining the geometry of the tool can be exported in the CAD/CAM software and FEM software. A case-study is presented to illustrate and validate the methodology.

Research on the Automatic Programming System for Industrial Robots in Free-Form Surfaces Polishing

2010 ◽  
Vol 455 ◽  
pp. 181-185 ◽  
Author(s):  
Jian Ming Zhan ◽  
Q.T. Liu ◽  
Gang Ming Wang
Keyword(s):  
Industrial Robots ◽  
Degree Of Freedom ◽  
Free Form ◽  
Programming System ◽  
Automatic Programming ◽  
Nc Code ◽  
Cad Cam ◽  
Programming Software ◽  
Free Form Surfaces ◽  
Cam Software

Because of the industrial robot’s advantages and characteristics of degree of freedom, it is broadly applied in mold and die of curved surfaces polishing. But its excessive degree of freedom also brings great difficulties in programming for there is CAD/CAM software can do it well. By analyzing the ISO NC code and robot’s programming criterion, this paper develops off-line programming software for industrial robots in free-form surfaces polishing.

B/S Structure-Based Remote Management System in CNC

2015 ◽  
Vol 743 ◽  
pp. 180-183
Author(s):  
L.L. Yan ◽  
Y.R. Chen ◽  
W.J. Ren ◽  
Yuan Yu
Keyword(s):  
Management System ◽  
Cnc Machining ◽  
Nc Code ◽  
Remote Transmission ◽  
Remote Management ◽  
Dynamic Web ◽  
Java Server Pages ◽  
Cad Cam ◽  
Database Technology ◽  
Cam Software

A multi-user remote transmission of CNC machining management system was developed based on B/S structure, which combines network management model with CNC machining technologies and replaces the traditional file-copy format. This system not only provides convenience for users to use CNC equipment but also greatly improves efficiency and safety. In this project, a JSP (Java Server Pages) dynamic web site was developed in the MyEclipse environment, which can carry out many functions, including management of users’ information and documents taking advantage of database technology, transmitting and operating NC code and source files which CAD/CAM software generated. This is an attempt of centralized CAD/CAM network manufacturing.

An Integrated CAD/CAM System for Design and Manufacturing of High-Curvature Surfaces

1999 ◽  
Author(s):  
Liping Wang ◽  
Subramaniam S. Nair
Keyword(s):  
New York ◽  
Tool Path ◽  
Rear View Mirror ◽  
City College ◽  
Design And Manufacturing ◽  
Cad Cam ◽  
Filling Analysis ◽  
Five Axis ◽  
The City ◽  
Cam Software

Abstract This paper presents an integrated CAD/CAM system developed at the City College of the City University of New York (CCNY) for design, analysis and manufacturing of high-curvature surfaces. Surface modeling technique which is characterized by modeling from curvature or slope information, is discussed and practiced to design high-curvature surfaces such as rear-view mirror covers for automobiles. Plastic molding is chosen to manufacture the designed parts. Molding parameters such as entrance position and mold inserts are analyzed and determined using tools such as mold filling analysis (C-FLOW/EZ). Newly modified curvature matching method, together with methods provided by commercial CAM software, are adopted to generate five-axis NC tool path to manufacture the designed mold components. An example on design and manufacturing of a rear-view mirror cover using the integrated CAD/CAM system for high-curvature surfaces is given to illustrate the effectiveness of this system.

Biorefinery implementation for recovery debottlenecking at existing pulp mills- Part II: Techno-economic evaluation

TAPPI Journal ◽  
2012 ◽  
Vol 11 (8) ◽  
pp. 17-24 ◽  
Author(s):  
HAKIM GHEZZAZ ◽  
LUC PELLETIER ◽  
PAUL R. STUART
Keyword(s):  
Cost Estimation ◽  
Process Model ◽  
Black Liquor ◽  
Pulp Mill ◽  
Value Added ◽  
Economic Assessment ◽  
Extraction Process ◽  
Estimation Methods ◽  
Precipitation Process

The evaluation and process risk assessment of (a) lignin precipitation from black liquor, and (b) the near-neutral hemicellulose pre-extraction for recovery boiler debottlenecking in an existing pulp mill is presented in Part I of this paper, which was published in the July 2012 issue of TAPPI Journal. In Part II, the economic assessment of the two biorefinery process options is presented and interpreted. A mill process model was developed using WinGEMS software and used for calculating the mass and energy balances. Investment costs, operating costs, and profitability of the two biorefinery options have been calculated using standard cost estimation methods. The results show that the two biorefinery options are profitable for the case study mill and effective at process debottlenecking. The after-tax internal rate of return (IRR) of the lignin precipitation process option was estimated to be 95%, while that of the hemicellulose pre-extraction process option was 28%. Sensitivity analysis showed that the after tax-IRR of the lignin precipitation process remains higher than that of the hemicellulose pre-extraction process option, for all changes in the selected sensitivity parameters. If we consider the after-tax IRR, as well as capital cost, as selection criteria, the results show that for the case study mill, the lignin precipitation process is more promising than the near-neutral hemicellulose pre-extraction process. However, the comparison between the two biorefinery options should include long-term evaluation criteria. The potential of high value-added products that could be produced from lignin in the case of the lignin precipitation process, or from ethanol and acetic acid in the case of the hemicellulose pre-extraction process, should also be considered in the selection of the most promising process option.

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