Results 21 to 30 of about 3,137 (254)

Influence of NC Program Quality and Geometric Errors of Rotary Axes on S-Shaped Machining Test Accuracy

Journal of Manufacturing and Materials Processing, 2018
An S-shaped machining test is proposed for the ISO 10791-7 standard to verify the performance of five-axis machining centers. However, investigation of the factor that has the most influence on the geometrical accuracy of finished S-shaped workpieces has
Ryuta Sato, Keiichi Shirase, Yukitoshi Ihara   +2 more
doaj   +1 more source

On-Machine Measurement and Error Compensation for 6061 Aluminum Alloy Hexagonal Punch Using a Turn-Milling Machine

Machines, 2021
For machining parts with complex shapes, consisting of computer numerical control (CNC) machine tools, different CNC machine tools will be used according to the machining method.
Cheng-Hsien Kuo, Po-Cheng Chen
doaj   +1 more source

Vision-Based Measurement of Two-Dimensional Positioning Errors of Machine Tools

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2011
This paper presents vision-based measurement of two-dimensional positioning errors of machine tools. A pre-calibrated grid plate is used as an artefact. The position of a grid point is measured in an image captured by a charge coupled device (CCD) camera
Soichi IBARAKI, Yusuke TANIZAWA
doaj   +1 more source

Geometric Error Compensation of Five-Axis Machining Centers Based on On-Machine Workpiece Measurement

International Journal of Automation Technology, 2018
This study proposes an identification and compensation method for the geometric errors of the rotary axes in five-axis machining centers, based on the on-machine measurement results of the machined workpiece. Geometric errors can be identified from the shape geometry of the workpiece machined by five-axis motions because the influence of the errors ...
Ryuta Sato, Keiichi Shirase
openaire   +1 more source

Reduction in the Volumetric Wear of a Ball Polishing Tool Using Ultrasonic-Vibration-Assisted Polishing Process

Lubricants, 2022
Ultraprecision freeform polishing using a bonnet or a felt ball mounted on a polishing head plays an important role in the mold and lens production industries. The volumetric wear of a bonnet or a felt polishing ball is still a problem to be solved.
Fang-Jung Shiou, Zhao-Li Ding, Sun-Peng Lin   +2 more
doaj   +1 more source

Fabrication of Edge Rounded Polylactic Acid Biomedical Stents by the Multi-Axis Micro-Milling Process

Applied Sciences, 2020
This paper presents the first try to fabricate degradable polylactic acid (PLA) biomedical stents with round edges by the multi-axis micro-milling process. Conventionally biomedical stents are produced by laser processing.
Fuh-Yu Chang, Yan-Chiau Chen, Te-Hsien Liang, Zong-Yan Cai   +3 more
doaj   +1 more source

Workpiece Setup Simulation based on Machinable Space of Five-axis Machining Centers

Procedia CIRP, 2014
AbstractAn actual machining center specification, e.g. the axes travel, the workpiece size allowance, etc., needs to be considered for constructing a machining process plan. In this paper, a machinable space of a five-axis machining center is proposed for simulating the workpiece setup.
Isnaini, Mohammad Mi’radj, Sato, Ryuta, Shirase, Keiichi   +2 more
openaire   +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

Design of motion accuracy measurement device with three displacement sensors for machine tool and comparison of its setting method

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2014
The standard of test method for five-axis machining center is now under discussion by ISO. In its draft standard, the use of a measurement device with three displacement sensor is described in addition to the ball bar device that is well-known as the ...
Masashi YAMAJI, Naoki HAMABATA, Yukitoshi IHARA   +2 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