scholarly journals Contribution to predefinition of the geometric features and their processing sequences in order to create a CAPP model

2018 ◽  
Vol 178 ◽  
pp. 05019
Author(s):  
Iaroslav Francisc Pişec ◽  
Florin Sandu Blaga
Keyword(s):  
Process Planning ◽  
Production Line ◽  
Geometric Features ◽  
Computer Aided Process Planning ◽  
Car Body ◽  
Nc Program ◽  
Computer Aided ◽  
The Creation ◽  
Body Production

In order to create a Computer Aided Process Planning (CAPP) model for a family of parts, it is necessary to establish a database containing the geometric features specific to that family. In the car body production line industry, several families of parts can be determined each having specific geometric features. The parts that are part of a family of parts must be designed in such a way that at the end, they contain those specific features. The next step in the implementation of the CAPP model, is to create a database for processing sequences associated with geometric features. Combining these two databases, the database of geometric features and the processing sequences, the result is the NC program of the designed part. This study presents the creation of these two databases and the link between them.

scholarly journals Newly Developed Software Application for Multiple Access Process Planning

2014 ◽  
Vol 6 ◽  
pp. 539071 ◽  
Author(s):  
Katarina Monkova ◽  
Peter Monka
Keyword(s):  
Process Planning ◽  
Mathematical Structure ◽  
Computer Aided Process Planning ◽  
Software Application ◽  
Plan Generation ◽  
Nc Program ◽  
Input Material ◽  
Computer Aided ◽  
Technological Documentation ◽  
Real Practice

The purchase of a complex system for computer aided process planning (CAPP) can be expensive for little and some middle sized plants, sometimes an inaccessible investment, with a long recoupment period. According to this fact and the author's experience with Eastern European plants, they decided to design a new database application which is suitable for production, stock, and economic data holding as well as processing and exploitation within the manufacturing process. The application can also be used to process a plan according to the selected criteria, for technological documentation and NC program creation. It was based on the theory of a multivariant approach to computer aided plan generation. Its fundamental features, the internal mathematical structure and new code system of processed objects, were prepared by the authors. The verification of the designed information system in real practice has shown that it enables about 30% cost and production time reduction and decreases input material assortment variability.

Machining Feature-Based CAD/CAPP for STEP-NC

2014 ◽  
Vol 598 ◽  
pp. 591-594 ◽  
Author(s):  
Li Yan Zhang
Keyword(s):  
Process Planning ◽  
Manufacturing Process ◽  
Data Transfer ◽  
Operation Planning ◽  
Computer Aided Process Planning ◽  
Machining Feature ◽  
Computer Aided ◽  
Cad Cam ◽  
Feature Based ◽  
Cam Systems

ISO 14649, known as STEP-NC, is new model of data transfer between CAD/CAM systems and CNC machines. In this paper, the modeling based on machining feature is proposed. The machining feature comes from the manufacturing process considering the restriction of machining technology and machining resource. Then the framework for computer aided process planning is presented, where the algorithms of operation planning is studied. The practical example has been provided and results indicate that machining feature based model can integrate with CAPP and STEP-NC seamlessly.

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