Results 21 to 30 of about 4,985 (261)

Space cutter compensation method for five-axis nonuniform rational basis spline machining

Advances in Mechanical Engineering, 2015
In view of the good machining performance of traditional three-axis nonuniform rational basis spline interpolation and the space cutter compensation issue in multi-axis machining, this article presents a triple nonuniform rational basis spline five-axis ...
Yanyu Ding, Taiyong Wang, Bo Li, Jingchuan Dong, Zhe Liu   +4 more
doaj   +1 more source

Rotation-Angle Solution and Singularity Handling of Five-Axis Machine Tools for Dual NURBS Interpolation

Machines, 2023
Dual NURBS interpolation has been proven an essential technique for high-speed precision machining of complex surfaces. The solution of rotation angles and their derivatives is the basis of kinematic transformation and feedrate optimization in dual NURBS
Pengpeng Sun, Qiang Liu, Jian Wang, Zhenshuo Yin, Liuquan Wang   +4 more
doaj   +1 more source

Tool path generation for sculptured surfaces with 4-axis machining

MATEC Web of Conferences, 2018
Sculpted surfaces are widely used in engineering applications in industries like aerospace, automotive and medical. Commonly, these types of surfaces are manufactured by the process of 5-axis CNC machining. 5-axis machining improves the effectiveness and
Garcia A, Cuan-Urquizo E, Roman-Flores A, Vazquez E   +3 more
doaj   +1 more source

Research on Key Technology of Online Measurement of Five-axis Linkage Machine Tool

Journal of Applied Science and Engineering
In order to improve the machining accuracy and online measurement accuracy of the five-axis linkage machine tool, the motion solution of the double pendulum head five-axis linkage machine tool is realized based on the analysis of the movement and change ...
Dashuang Wang, RongJing Hong
doaj   +1 more source

A study on tolerance design of machine tool components based on shape generation motions (Theoretical analysis considering rotational table positions)

Nihon Kikai Gakkai ronbunshu, 2017
The kinematic motion deviations of the five-axis machining centers are deeply influenced by the geometric deviations of the components, such as guide-ways and bearings.
Naoki SATONAKA, Ryo TAKEMATSU, Nobuhiro SUGIMURA, Koji IWAMURA, Yoshitaka TANIMIZU   +4 more
doaj   +1 more source

A study on tolerance design of machine tool components based on shape generation motions

Nihon Kikai Gakkai ronbunshu, 2016
The kinematic motion deviations of the five-axis machining centers are deeply influenced by the geometric deviations of the components, such as guide-ways and bearings.
Ryo TAKEMATSU, Naoki SATONAKA, Arata YOSHIDA, Nobuhiro SUGIMURA, Koji IWAMURA, Yoshitaka TANIMIZU   +5 more
doaj   +1 more source

Improvement of machining accuracy under constant feed speed at milling point with a five axis controlled machining center based on Advanced control Method

Nihon Kikai Gakkai ronbunshu, 2017
Recently, a novel manufacturing technology has spread out with a five-axis machining center, which is controlled by three linear axes and two rotary axes, because the synchronous control technologies make it feasible agilely to create a three-dimensional
Takamaru SUZUKI, Yuma MARUYAMA, Toshiki HIROGAKI, Eiichi AOYAMA   +3 more
doaj   +1 more source

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Five-Axis Milling of Large Spiral Bevel Gears: Toolpath Definition, Finishing, and Shape Errors

Metals, 2018
In this paper, a five-axis machining process is analyzed for large spiral-bevel gears, an interesting process for one-of-kind manufacturing. The work is focused on large sized spiral bevel gears manufacturing using universal multitasking machines or five-
Álvaro Álvarez, Amaia Calleja, Naiara Ortega, Luis Norberto López de Lacalle   +3 more
doaj   +1 more source

Design and analysis strategies for robust microbiome ageing research

FEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik, İsmail Güderer, Yi Wang, Tayyaba Alvi, Prasoon Pandey, Handan Melike Dönertaş   +5 more
wiley   +1 more source