Designing a computer-aided manufacturing systems engineering process

1998 ◽  
Vol 76 (1-3) ◽  
pp. 82-87 ◽  
Author(s):  
K. Mertins ◽  
M. Rabe ◽  
W. Müller
Keyword(s):  
Systems Engineering ◽  
Manufacturing Systems ◽  
Engineering Process ◽  
Computer Aided Manufacturing ◽  
Computer Aided

Feature-based automatic NC programming for aero-engine casings

2018 ◽  
Vol 233 (4) ◽  
pp. 1289-1301
Author(s):  
Nan Zhou ◽  
Xu Liu
Keyword(s):  
Manufacturing Systems ◽  
Numerical Control ◽  
Programming Approach ◽  
Programming System ◽  
Computer Aided Manufacturing ◽  
Nc Programming ◽  
Computer Aided ◽  
Aero Engine ◽  
Feature Based ◽  
Low Efficiency

Traditional numerical control (NC) programming methods based on commercial computer-aided manufacturing systems usually require a large number of manual interactions with high-skilled experience, which not only results in low efficiency but also unstable machining quality. Especially since the structural complexity and machining requirements keep increasing, the NC programming is becoming a bottleneck problem in machining complex parts like aero-engine casings. This article proposes a feature-based automatic NC programming approach for aero-engine casings. A machining feature classification towards the geometric and machining characteristics of aero-engine casings is given. Then, a feature-based method to extract machining regions by considering the alternatives in selecting turning or milling operations is discussed. After the construction of machining operations, an undercut region detection method is also presented to evaluate the interim machining effects reasoned by each individual machining operation for excessive cutting avoidance. By implementing the proposed approach, a feature-based NC programming system is developed on a commercial computer-aided manufacturing platform and a real aero-engine casing is chosen to demonstrate the feasibility of the proposed approach.

A Framework for Integrated Computer-Aided Design, Process Planning and Manufacturing Systems Engineering for Powertrain Machining

2004 ◽  
Author(s):  
Derek Yip-Hoi ◽  
Jianming Li ◽  
Liang Zhou ◽  
Wencai Wang ◽  
Madhumati Ramesh ◽  
...  
Keyword(s):  
Design Process ◽  
Process Planning ◽  
Systems Engineering ◽  
Computer Aided Design ◽  
Manufacturing Systems ◽  
Manufacturing System ◽  
Value Added ◽  
Computer Aided Process Planning ◽  
Computer Aided ◽  
Aided Design

Machined powertrain components are a subset of machined parts that introduce unique and difficult problems to product design, process planning and manufacturing system design for the automotive industry. They are complex, high value-added components that must be produced at large volumes to stringent quality standards. Accordingly product development cycles are typically long. Integrated computer-aided approaches are thus desirable for reducing this time and helping manufacturing engineers design the best process and specify the optimal manufacturing system configuration. This paper presents a framework for integrating Computer-Aided Design (CAD), Computer-Aided Process Planning (CAPP) and Computer-Aided Manufacturing Systems Engineering (CAE-MS) for producing machined powertrain components. It describes the key components of this framework and in some cases details of the methods and technologies adopted for their realization. This solution is based upon a feature-centric philosophy. This stands in contrast to the product-variant approach that has been common practice in this industry.

scholarly journals Computer-aided dental manufacturing technologies used in fabrication of metal frameworks

2021 ◽  
Vol 38 (SI-2) ◽  
pp. 119-122
Author(s):  
Necati KALELİ ◽  
Çağrı URAL ◽  
Yurdanur UÇAR
Keyword(s):  
Manufacturing Systems ◽  
Digital Technologies ◽  
Metal Alloys ◽  
Dental Practice ◽  
Casting Method ◽  
Computer Aided Manufacturing ◽  
Dental Restorations ◽  
Computer Aided ◽  
Manufacturing Methods ◽  
Manufacturing Technologies

Metal alloys have been used for many years as framework material of dental restorations. The conventional lost-wax and casting method, which was very popular in fabrication of metal frameworks, are now being replaced by computer-aided manufacturing technologies. Computer-aided manufacturing methods offer many advantages, such as standardization and quality in manufacturing, precise fit of restorations, and improved mechanical strength. Digital technologies used in fabrication of metal frameworks are simply classified as subtractive and additive computer-aided manufacturing systems, and each have their own subdivisions, which show differences in the used technology. This review summarizes computer-aided systems used in fabrication of metal frameworks in terms of use in dental practice, advantages, disadvantages and provides clinical recommendations.

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