Please use this identifier to cite or link to this item: http://hdl.handle.net/10603/4512
Title: Integration of feature recognition and CNC code generation for AXI symmetric rotary parts in a typical CIM environment
Researcher: Pabba, Srikanth
Guide(s): Rao, C S P
Janardhana, G Ranga
Keywords: Computer Aided Design (CAD)
Initial Graphics Exchange System (IGES)
Data Exchange Format (DXF)
Mechanical Engineering
Upload Date: 3-Sep-2012
University: Jawaharlal Nehru Technological University
Completed Date: November, 2011
Abstract: In the current global business environment the focus is on increased quality and reduced cycle times. In spite of advanced manufacturing and automation technology, the link between CAD and CAM is still not as integrated as desired. Although in most circumstances CAD data can be processed within the CIM environment by integrated software components to produce information like manufacturing data, assembly data, etc., there are a significant number of cases where an external CAD resource needs to be processed for further integration with CAM. In this context, this research work aims at developing a novel approach to integrate CAD and CAM, specifically for the rotary parts drawn in any CAD environment and finally to generate a CNC part program for the same. The proposed system is developed in four phases. The first phase involves, getting a CAD model of 2D upper half profile of the required component drawn in any CAD environment and converted to DXF data structure. The second phase is about Data extraction system which is used to extract the useful geometrical data pertaining to the component from its corresponding DXF file. The third phase, Feature Recognition system, is used to organize the data extracted from the DXF file and present the same in the form of a more meaningful data, called as design features, using syntactic pattern recognition technique. Feature Mapping is performed to map the design features in to thecorresponding predefined manufacturing features. Rule-based process sequencing is performed to sequence the machining operations. The final phase involves the generation of CNC part Program. Several algorithms were developed to translate the design data to the corresponding CNC codes. A software program in ?C? is developed for extraction of the feature data from the related DXF file and for the generation of the part program. The output of the program is given in the form of text files. Based on the proposed novel approach simulation runs are carried out and the results were found to be satisfactory.
Pagination: xv, 145p.
URI: http://hdl.handle.net/10603/4512
Appears in Departments:Faculty of Mechanical Engineering

Files in This Item:
File Description SizeFormat 
01_title.pdfAttached File88.59 kBAdobe PDFView/Open
02_dedication.pdf36.14 kBAdobe PDFView/Open
03_certificate.pdf91.25 kBAdobe PDFView/Open
04_declaration.pdf121.56 kBAdobe PDFView/Open
05_acknowledgements.pdf69.28 kBAdobe PDFView/Open
06_abstract.pdf115.8 kBAdobe PDFView/Open
07_list of published papers.pdf158.89 kBAdobe PDFView/Open
08_contents.pdf105.18 kBAdobe PDFView/Open
09_list of figures.pdf72.41 kBAdobe PDFView/Open
10_list of tables.pdf65.66 kBAdobe PDFView/Open
11_chapter 1.pdf133.19 kBAdobe PDFView/Open
12_chapter 2.pdf182.44 kBAdobe PDFView/Open
13_chapter 3.pdf446.35 kBAdobe PDFView/Open
14_chapter 4.pdf327.81 kBAdobe PDFView/Open
15_chapter 5.pdf328.4 kBAdobe PDFView/Open
16_chapter 6.pdf716.05 kBAdobe PDFView/Open
17_chapter 7.pdf148.62 kBAdobe PDFView/Open
18_appendix.pdf943.26 kBAdobe PDFView/Open


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