Results 11 to 20 of about 6,382,755 (302)

Evaluation of the machinability and machining accuracy of polymer-based CAD/CAM blocks using merlon fracture test model.

open access: yesDental materials journal, 2023
The aims of this study were to estimate the machinability and machining accuracy of polymer-based CAM blocks using the merlon fracture test model specified in ISO 18675: 2022. Three hybrid disc blanks (MazicDuro, HC Disk, and Enamic) and three polymethyl
Chang-sub Jeong   +7 more
semanticscholar   +1 more source

A novel multi-pass machining accuracy prediction method for thin-walled parts

open access: yesThe International Journal of Advanced Manufacturing Technology, 2023
Thin-walled parts (TWPs) are widely used in aerospace, and their service performance is significantly affected by the machining accuracy. Multi-pass machining is used to machine the poor stiffness TWPs.
Qixing Huang   +5 more
semanticscholar   +1 more source

Study on Kerosene-submerged Jet Electrochemical Machining and Optimization of the Electrochemical Machining Parameters

open access: yesInternational Journal of Electrochemical Science, 2021
Kerosene-submerged jet electrochemical machining (Jet-ECM) has been proven to be an effective process to enhance the machining localization of Jet-ECM.
Xinchao Li   +7 more
doaj   +1 more source

Thermal error modeling of spindle and dynamic machining accuracy reliability analysis of CNC machine tools based on IA and LHSMC

open access: yesEksploatacja i Niezawodnosc - Maintenance and Reliability, 2022
Machining accuracy reliability as a key index of CNC machine tools is seriously influenced by the geometric and thermal errors. In the paper, a spindle unit thermal error modeling and machining accuracy reliability analysis method is proposed.
Ziling Zhang   +4 more
semanticscholar   +1 more source

The Accuracy of Tide-predicting Machines [PDF]

open access: yesNature, 1922
IT seemed to me that Mr. Marmer's first letter left the impression that the U.S.A. machine is one that is free from serious errors of the order of magnitude of those of the British machines, and I raised the question of proof. I said that I should be very glad to know that this machine could produce hourly heights to within 0.05 ft. with a spring range
  +6 more sources

Deep Reactive Ion Etching of Z-Cut Alpha Quartz for MEMS Resonant Devices Fabrication

open access: yesMicromachines, 2020
Quartz is widely used in microelectromechanical systems (MEMS). Especially, MEMS quartz resonators are applied to sensors and serve as sensitive elements. The capability of deep etching is a limitation for the application.
Bo Li   +4 more
doaj   +1 more source

A Unique Model to Estimate Geometric Deviations in Drilling and Milling Due to Two Uncertainty Sources

open access: yesApplied Sciences, 2021
Industry 4.0 involves the use of information and communication technologies to transform industry by intelligent networking machines and processes. The availability of big data sets from manufacturing and inspection allow for developing new and more ...
Wilma Polini, Andrea Corrado
doaj   +1 more source

Enhancing machining accuracy reliability of multi-axis CNC machine tools using an advanced importance sampling method

open access: yesEksploatacja I Niezawodnosc-maintenance and Reliability, 2021
The purpose of this paper is to propose a general precision allocation method to improve machining performance of CNC machine tools based on certain design requirements.
Zhiming Wang, Hao Yuan
semanticscholar   +1 more source

An accuracy evolution method applied to five-axis machining of curved surfaces

open access: yesThe International Journal of Advanced Manufacturing Technology, 2023
Currently, some high-value-added applications involve the manufacturing of curved surfaces, where it is challenging to achieve surface accuracy, repeatability, and productivity simultaneously.
J. Zha   +5 more
semanticscholar   +1 more source

On-machine measurement and compensation machining for ultra-precision cutting of optical aspheric surface

open access: yesJin'gangshi yu moliao moju gongcheng, 2022
An in-situ measurement device combining contact probe and capacitive displacement sensor is developed. An aspherical measurement and compensation machining software is also developed. The single point diamond ultra precision cutting experiments for C3604
Liang ZHANG   +6 more
doaj   +3 more sources

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