Special Issue on Multiaxis Control and Multitasking Machine Tools

2007 ◽  
Vol 1 (2) ◽  
pp. 77-77 ◽  
Author(s):  
Yoshimi Takeuchi ◽  
Keyword(s):  
Machine Tools ◽  
State Of The Art ◽  
Numerical Control ◽  
Plant Production ◽  
Precision Machining ◽  
Accuracy Evaluation ◽  
Special Issue ◽  
Complex Products ◽  
Current State ◽  
Control Machine

Machine tools using numerical control (NC) devices are typical mechatronics products and a powerful way to automate plant production. The introduction of multiaxis control and multitasking machine tools to workshops is growing to meet the requirements of highly efficient, precision machining of a variety of complex products and mold dies. The increase in the number of control axes and multitasking capability in one chucking process enable machine tools to manufacture complex products efficiently and accurately. Given the strong attention and interest multiaxis control and multitasking machine tools are attracting, it is about time to introduce the current state of the art of these tools and their practical and applicable technologies, especially in Japan. This special issue covers the development of 5-axis control machining centers, machine tools having multispindle heads with 5-axis control, 5-axis control CAMs, accuracy evaluation for 5-axis control machine tools, and more. We thank the authors for their interesting papers to this special issue, and are certain that both general readers and specialists will find the information they provide both interesting and informative.

Special Issue on Multiaxis Control and Multitasking Machining

2017 ◽  
Vol 11 (2) ◽  
pp. 139-139
Author(s):  
Keiichi Nakamoto ◽  
Keyword(s):  
Machine Tools ◽  
Tool Path ◽  
High Accuracy ◽  
Numerical Control ◽  
Plant Production ◽  
Vibration Monitoring ◽  
Practical Case ◽  
Accuracy Evaluation ◽  
Generation Process ◽  
Special Issue

Machine tools using numerical control (NC) devices are typical mechatronics products, and introducing them is a powerful way to automate plant production. NC machine tools in workshops meet the requirements of high accuracy and efficiency in the machining of a variety of parts and mold dies. Turning centers and machining centers are typical examples of such machine tools. Various cutting processes have been integrated in them to cope with the increase in machine parts that not only have complicated geometries but also must be made with high accuracy, in small quantities, and in a short machining time. In addition, turning and machining centers have been given multitasking capabilities, and the number of control axes has been increased so that complex products may be manufactured efficiently. Given that the strong attention and interest in multiaxis control and multitasking machine tools are rapidly increasing, it is fitting that the current state of the art of these tools and their practical and applicable technologies be presented. This special issue features 16 research articles – one review and 15 papers – related to the latest research results and practical case studies in multiaxis control and multitasking machining. Their subjects cover various advances in machine control, motion accuracy evaluation, machining error analysis, chatter vibration monitoring or suppression, trouble-free tool path generation, process planning, and new applications of the machine tools. We thank the authors for their contributions to this special issue, and we are sure that both non-specialists and specialists alike will find the information the authors provide both interesting and informative. Moreover, we deeply appreciate the reviewers for their incisive efforts. Without these contributions, this special issue could not have been realized. We truly hope that this special issue will trigger further research on multiaxis control and multitasking machining.

scholarly journals Multifaceted origins of sex differences in the brain

2016 ◽  
Vol 371 (1688) ◽  
pp. 20150106 ◽  
Author(s):  
Margaret M. McCarthy
Keyword(s):  
Sex Differences ◽  
State Of The Art ◽  
Human Subjects ◽  
Special Issue ◽  
Molecular Analyses ◽  
The Past ◽  
Current State ◽  
Biological Variable ◽  
Males And Females ◽  
The Brain

Studies of sex differences in the brain range from reductionistic cell and molecular analyses in animal models to functional imaging in awake human subjects, with many other levels in between. Interpretations and conclusions about the importance of particular differences often vary with differing levels of analyses and can lead to discord and dissent. In the past two decades, the range of neurobiological, psychological and psychiatric endpoints found to differ between males and females has expanded beyond reproduction into every aspect of the healthy and diseased brain, and thereby demands our attention. A greater understanding of all aspects of neural functioning will only be achieved by incorporating sex as a biological variable. The goal of this review is to highlight the current state of the art of the discipline of sex differences research with an emphasis on the brain and to contextualize the articles appearing in the accompanying special issue.

Design on Operation Panel of Numerical Control Machine Tools

2014 ◽  
Vol 1014 ◽  
pp. 67-70
Author(s):  
Jia Jun Ding
Keyword(s):  
Machine Tools ◽  
Numerical Control ◽  
The Novel ◽  
Interactive Interface ◽  
Computer Keyboard ◽  
Operation Panel ◽  
Control Machine

The operation panel of numerical control machine tools is an interactive interface between numerical control machine tools and opertators. In order to operation specification and easy to operating , based on ergonomics, by intergating the traditional operation panel of numerical control machine tools with computer keyboard , we design a novel operation panel of numerical control machine tools based on the traditional numerical control machine tools. By operating on the novel operation panel, the results the operation of the novel panel is easy and specified.

scholarly journals Polymer Clay Nano-Composites

Polymers ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1445
Author(s):  
Stefano Leporatti
Keyword(s):  
Drug Delivery ◽  
Composite Materials ◽  
Polymer Composite ◽  
State Of The Art ◽  
Environmental Water ◽  
Water Remediation ◽  
Nano Composites ◽  
Special Issue ◽  
Current State ◽  
Exciting Area

Clay–polymer composite materials is an exciting area of research and this Special Issue aims to address the current state-of-the-art of “Polymer Clay Nano-Composites” for several applications, among them antibacterial, environmental, water remediation, dental, drug delivery and others [...]

Experimental study on the repeatability of positioning of linear axes of machine tools

2019 ◽  
Vol 234 (4) ◽  
pp. 739-751
Author(s):  
Guangming Sun ◽  
Gaiyun He ◽  
Dawei Zhang ◽  
Bohui Ding
Keyword(s):  
Experimental Study ◽  
Machine Tools ◽  
Computer Numerical Control ◽  
Numerical Control ◽  
Experimental Investigations ◽  
Single Factor ◽  
Factors Affecting ◽  
Assembly Method ◽  
Orthogonal Experiments ◽  
Control Machine

This study presents experimental investigations on the mechanisms of the repeatability of positioning of linear axes of computer numerical control machine tools. First, the factors affecting the repeatability of positioning of linear axes are obtained based on orthogonal experiments. Second, the mechanism of each factor affecting the repeatability of positioning is studied based on single-factor experiments. Finally, an assembly method to improve the repeatability of positioning of linear axes is proposed. The method can provide designers and workers with informative guidelines for improving the repeatability of positioning in design and assembly processes.

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