The Role of Numerical Control in Machining of Aerospace Materials

1964 ◽  
Author(s):  
G. E. Jerahov
Keyword(s):  
Numerical Control ◽  
Aerospace Materials

Current State of the Art of Multi-Axis Control Machine Tools and CAM System

2014 ◽  
Vol 26 (5) ◽  
pp. 529-539 ◽  
Author(s):  
Yoshimi Takeuchi ◽  
Keyword(s):  
Machine Tools ◽  
Numerical Control ◽  
Current State ◽  
Machine Shops ◽  
Nc Machine ◽  
Unique Shape ◽  
Nc Machine Tools ◽  
Nc Data ◽  
Cam Systems

<div class=""abs_img""><img src=""[disp_template_path]/JRM/abst-image/00260005/01.jpg"" width=""300"" />Asymmetric curved grooving</div> Multi-axis numerical control (NC) machine tools such as 5-axis control machining centers and 5-axis control multi-tasking machines are widely used in machine shops. NC data, which are prepared using computeraided manufacturing (CAM) systems, are used with multi-axis control NC machine tools that have a variety of advantages. This article describes the advantages ofmulti-axis control machining. The structure of CAM systems used for multi-axis control machining and the important role of collision avoidance in generating cutter location (CL) data are then explained. The transformation of CL data to NC data for use in machining, which is performed by a post-processor, is presented. Finally, an efficient machining method and unique shape creation via 6-axis control machining are explained. </span>

Fluidic Deformation Under Hypervelocity Impacts

2014 ◽  
Author(s):  
Andrew Thurber ◽  
Javid Bayandor
Keyword(s):  
Hypervelocity Impact ◽  
Orbital Debris ◽  
Inertial Forces ◽  
Impact Event ◽  
Aerospace Materials ◽  
Computational Framework ◽  
Hypervelocity Impacts ◽  
Dramatic Rise ◽  
Impact Risk

The increased frequency of exploration into space has caused a dramatic rise in the density of debris in orbit. Orbital debris, both natural and man-made, poses an extreme impact risk to satellites and spacecraft. The relative velocities between orbital components and debris can exceed thousands of meters per second, giving rise to immense kinetic energies even for small objects. In such a hypervelocity impact event, the shock pressures exceed the strength of common aerospace materials, and brief shock-induced temperature rises cause melting and vaporization of most structural bodies. Under these extreme conditions, the failure and deformation of solids can resemble fluid flow. By using meshless Lagrangian models in an explicit computational framework, this work identifies analogous fluidic interactions and further quantifies the role of shear and inertial forces in hypervelocity impacts (HVI).

Manufacturing Processes Analysis by Virtual Reality

2006 ◽  
Vol 526 ◽  
pp. 139-144 ◽  
Author(s):  
Alfredo Sanz ◽  
E.M. Rubio Alvir ◽  
Carmen Martínez Murillo ◽  
M.A. Sebastián
Keyword(s):  
Virtual Reality ◽  
Flexible Manufacturing ◽  
Machine Tools ◽  
Manufacturing Systems ◽  
Numerical Control ◽  
Manufacturing Processes ◽  
Automated Manufacturing ◽  
Aerospace Materials ◽  
Automated Manufacturing Systems ◽  
Construction Engineering

Present work shows many of Virtual Reality (RV) developments carried out in manufacturing processes field by the collaboration between Aerospace Materials and Production Department at the UPM University and Manufacturing and Construction Engineering at the UNED university. Most of them have been directed towards Numerical Control Machine Tools field and towards equipment that configure automated manufacturing systems like Flexible Manufacturing Systems (FMS).

scholarly journals The Role of Observation–Measurement Methods in the Surface Characterization of X39Cr13 Stainless-Steel Cutting Blades Used in the Fish Processing Industry

Materials ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 5796
Author(s):  
Wojciech Kapłonek ◽  
Krzysztof Nadolny ◽  
Bartosz Zieliński ◽  
Jarosław Plichta ◽  
Danil Pimenov ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Surface Characterization ◽  
Measurement Methods ◽  
Numerical Control ◽  
Regeneration Process ◽  
Fish Processing ◽  
Processing Industry ◽  
Five Axis

In the modern fish processing industry, flat fishes play an important role. They are processed into a final product in the form of a fillet during the skinning operation, which is carried out on machines operating in automated production lines. These machines are usually equipped with a single planar cutting blade or a few of such blades. The high-efficiency skinning and industrial conditions cause rapid wear of the cutting edge of the blade, which is detrimental to the quality of the final product. One of the forms of renewing the cutting ability of these types of tools is the regeneration carried out with the use of precise traverse surface grinding. The results of this process must be carefully verified for determining its correctness and possible optimization of its parameters. The main goal of this article was to characterize the usefulness of a number of observational and measuring methods to evaluate the results of the technical blade regeneration process. In this work, a number of contemporary observation–measurement methods such as optical microscopy (OM), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), optical profilometry (OP), and angle-resolved scattering (ARS), supported by image processing and analysis techniques, were analyzed. The authors focused on presenting the role of the abovementioned methods in the surface characterization of planar cutting blades made of X39Cr13 chromium martensitic stainless steel before and after the technological operation of flat-fish skinning. Additionally, the surface condition after the regeneration process carried out using the five-axis CNC (computerized numerical control) grinding machine was also assessed. Numerous results of surface observations, elemental composition microanalysis, high-accuracy surface microgeometry measurements, and quantitative and qualitative analysis confirming the possibility of using the proposed methods in the presented applications are presented.

Language barriers, literature usage and the role of reviews: an international and interdisciplinary study

1981 ◽  
Vol 3 (4) ◽  
pp. 185-189 ◽  
Author(s):  
M.D. Gordon ◽  
A. Santman
Keyword(s):  
English Language ◽  
Language Barriers ◽  
Review Literature ◽  
Numerical Control ◽  
Social Scientists ◽  
Review Articles ◽  
Extensive Coverage ◽  
Control Production ◽  
Interdisciplinary Study

This paper examines the languages in which primary and review literature is read by Dutch and UK Natural Scientists (Biochemists), Engineers (Numerical Control Production Engineers) and Social Scientists (the Study of Work and Occupations). The nature of the language barriers experi enced by each of these six groups is inter-compared, and the roles of translations and review articles in overcoming language barriers are investigated. It is concluded that in subjects where important non- English language primary literatures exist, greater resources should be invested in the identification, translation and publi cation in English of good quality non-English review articles which give extensive coverage of non-English primary litera ture.

scholarly journals Overview Role of Simulation Package in Virtual Manufacturing and for CNC Machinery

2018 ◽  
Vol 7 (2.8) ◽  
pp. 702
Author(s):  
R. Mahesh ◽  
J. Ganesh Murali ◽  
R. Arulmurugan
Keyword(s):  
Tool Path ◽  
Manufacturing Sector ◽  
Virtual Manufacturing ◽  
Manufacturing Industries ◽  
Numerical Control ◽  
Production Volume ◽  
Software Packages ◽  
Development Cycle ◽  
Additional Role

Computer Numerical Control Machines (CNC) totally changed the scenario in manufacturing industries in terms of production volume, easy flexibility and with fewer deviations.    As customers expect high grade of accuracy, precision, reliable and prompt supply it became essential in the manufacturing sector to reduce the time for developing and proving out new products. Normally programming and proving out the same plays a significant role in the product development cycle. Nowadays several software packages are there to stimulate the tool path, sequence of operations and validation of the program to ensure flawless performance. These packages do serve additional role of optimizing the program sequence and reduce the cycle time involved to manufacture the parts concerned.

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