نتایج جستجو برای: cnc

تعداد نتایج: 3526  

Intelligent knowledge based system (IKBS) is developed for optimizing dry CNC turning process using Taguchi method, CNC Machine, EN19 steel as the work piece material, andCutting Insert. Tool wear and spindle loading which are the machining parameters, spindle speed, feed rate, and depth of cut, areoptimized through the intelligent knowledge based system (IKBS). The experimental CNC turning mac...

2014
Susan Azizi Mansor Bin Ahmad Mohd Zobir Hussein Nor Azowa Ibrahim Farideh Namvar

A series of novel bionanocomposites were cast using different contents of zinc oxide-silver nanoparticles (ZnO-AgNPs) stabilized by cellulose nanocrystals (CNC) as multifunctional nanosized fillers in poly(vinyl alcohol)/chitosan (PVA/Cs) matrices. The morphological structure, mechanical properties, ultraviolet-visible absorption, and antimicrobial properties of the prepared films were investig...

2001
János Nacsa George L. Kovács Géza Haidegger

In an ideal scenario of intelligent machine tools [22] the human mechanist was almost replaced by the controller. During the last decade many efforts have been made to get closer to this ideal scenario, but the way of information processing within the CNC did not change too much. The paper summarizes the requirements of an intelligent CNC evaluating the different research efforts done in this f...

Journal: :Molecular biology of the cell 2009
Catherine McCusker Hélène Cousin Russell Neuner Dominique Alfandari

Cell adhesion molecules such as cadherins alternate their expression throughout cranial neural crest (CNC) development, yet our understanding of the role of these molecules during CNC migration remains incomplete. The "mesenchymal" cadherin-11 is expressed in the CNC during migration yet prevents migration when overexpressed in the embryo, suggesting that a defined level of cadherin-11-mediated...

2015
Jong-Min Kim So Young Hwang Dong-Soo Kim

This research describes the performance data of the aluminum automobile wheel manufactured by wheel flow forming machine. The performance is examined after designing and operating the CNC controller which is customized for the wheel flow-forming machine. In general, the existing wheel flowforming machine simultaneously controls the 3 rollers and axis, which results in the degradation of the qua...

Journal: :Chemistry 2015
Martín Hernández-Juárez Joaquín López-Serrano Patricia Lara Judith P Morales-Cerón Mónica Vaquero Eleuterio Álvarez Verónica Salazar Andrés Suárez

A series of Ru complexes containing lutidine-derived pincer CNC ligands have been prepared by transmetalation with the corresponding silver-carbene derivatives. Characterization of these derivatives shows both mer and fac coordination of the CNC ligands depending on the wingtips of the N-heterocyclic carbene fragments. In the presence of tBuOK, the Ru-CNC complexes are active in the hydrogenati...

Journal: :Computer-Aided Design 2006
Suk-Hwan Suh Dae-Hyuck Chung Byeong-Eon Lee Seungjun Shin Injun Choi Kwang-Myung Kim

STEP-NC, a new data model for CAD–CAM–CNC chain, is expected to encompass the whole scope of e-manufacturing. The new data model formalized as ISO 14649 is under development by ISO TC184 SC1 and SC4 for the replacement of the old standard so-called G&M codes, formalized as ISO 6983 which has been used since the 1950s. As the new data model is being established, development and implementation of...

Journal: :Development 2011
Jingyuan Li Xiaofeng Huang Xun Xu Julie Mayo Pablo Bringas Rulang Jiang Songling Wang Yang Chai

TGFβ/BMP signaling regulates the fate of multipotential cranial neural crest (CNC) cells during tooth and jawbone formation as these cells differentiate into odontoblasts and osteoblasts, respectively. The functional significance of SMAD4, the common mediator of TGFβ/BMP signaling, in regulating the fate of CNC cells remains unclear. In this study, we investigated the mechanism of SMAD4 in regu...

2011
Y. Koren C. C. Lo

CAD systems today interpolate general curves by dividing each curve into many straight-line segments which are downloaded to the CNC. Determining the number of lines to be transferred from the CAD to the CNC poses a conflict between the desired precision of the part and the feedrate fidelity. The current method results in severe variations in the feedrate, leading, in turn, to variations in the...

Journal: :Biomacromolecules 2013
Arcot R Lokanathan Antti Nykänen Jani Seitsonen Leena-Sisko Johansson Joseph Campbell Orlando J Rojas Olli Ikkala Janne Laine

We show a simple method toward nanoscale cilia-like structures, i.e., functional hairy surfaces, upon topochemically functionalizing nanorods of cellulose nanocrystals (CNCs) with thiol end groups (CNC-SHs), which leads to their immobilization onto a gold surface from one end, still allowing their orientational mobility. CNCs having a lateral dimension of 3-5 nm and length of 50-500 nm incorpor...

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