Results 51 to 60 of about 12,361 (269)
Nihon Kikai Gakkai ronbunshu, 2019 In this report, we propose a method to analyze the frequency and phase difference of self-excited vibration during cutting by using image analysis for the photographed image of the machined surface by end milling.
Nobutoshi OZAKI +3 more
doaj +1 more source
Applied Sciences, 2021 Chatter is more likely to occur during the turning process of a thin-walled cylindrical workpiece owing to the low rigidity of such workpieces. Chatter causes intensive vibration, deterioration of the surface finish accuracy, tool damage, and tool wear ...
Yutaka Nakano +2 more
doaj +1 more source
Feminist Anthropology, EarlyView.Abstract Gender inequality remains widespread in the film and television production industry, yet it is seldom examined in relation to backstage working environments. This article integrates on‐screen and off‐screen perspectives to investigate the working lives of Chinese actresses.
Yajie Li, Yuhao Ding
wiley +1 more source
Regenerative chatter by teeth allocated in the cutting direction with position-dependent modal displacement ratios [PDF]
, 2019 Cutters with high flexibility, e.g. side-and-face cutters and band saw cutters, are widely used in industries for finishing of narrow and deep grooves or parting operations.
Xu, Yang +4 more
core +1 more source
Grassland Research, EarlyView.Restoration reseeding of degraded alpine meadows increased aboveground vegetation but was associated with short‐term topsoil carbon loss, coinciding with a microbial strategy shift from resident carbon‐preserving to carbon‐spending bacterial guilds. Abstract Background Restoration of degraded ecosystems is widely promoted as a nature‐based solution ...
Long‐Tao Zhu +9 more
wiley +1 more source
Identification method for stable spindle rotations against chatter by means of servo information
Nihon Kikai Gakkai ronbunshu, 2015 Chatter vibration must be avoided to ensure the cutting accuracy in milling. Several studies have proposed analytical prediction methods for chatter stability based on a frequency-domain milling model and a modal analysis.
Ryo KOIKE +3 more
doaj +1 more source
Generalized design method of highly-varied-helix end mills for suppression of regenerative chatter in peripheral milling [PDF]
, 2017 Peripheral finishing of hardened steel by milling has recently been introduced to the machining field, but often causes severe chatter vibration due to high specific cutting force and low stiffness of slender end mills.
Shamoto, Eiji +2 more
core +1 more source
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT The design of control systems for high‐agility mechanical systems operating in extreme environments is a significant challenge in nonlinear dynamics. This paper addresses the complex dynamic control problem of a hypersonic interceptor, modeled as a multi‐input multi‐output (MIMO) mechanical system characterized by strong aerodynamic cross ...
Mohammad Mahdi Soori +1 more
wiley +1 more source
Adaptive Sliding‐Mode Control of a Perturbed Diffusion Process With Pointwise In‐Domain Actuation
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT A sliding mode–based adaptive control law is proposed for a class of diffusion processes featuring a spatially‐varying uncertain diffusivity and equipped with several point‐wise actuators located at the two boundaries of the spatial domain as well as in its interior.
Paul Mayr +3 more
wiley +1 more source
On the stability of high-speed milling with spindle speed variation [PDF]
, 2010 Spindle speed variation is a well-known technique to suppress regenerative machine tool vibrations, but it is usually considered to be effective only for low spindle speeds.
Arnaud, Lionel +4 more
core +1 more source