Results 11 to 20 of about 25,590 (283)

Development of Pitch Cycle-Based Iterative Learning Contour Control for Thread Milling Operations in CNC Machine Tools

open access: yesApplied Sciences, 2023
The helical contour motion accuracy of feed drive axes is important for thread milling operations in computer numerical control (CNC) machine tools. However, the motion dynamics and external disturbances significantly affect the contour motion results ...
Syh-Shiuh Yeh, Wei-Jia Jiang
doaj   +1 more source

Surface roughness and vibration analysis in end milling of annealed and hardened bearing steel

open access: yesMeasurement: Sensors, 2021
This experimental study involves statistical analysis, mathematical modeling and optimization of machined surface roughness (Ra) well as the level of workpièce displacements (D) recorded during the shoulder and contour milling of AISI 52100 bearing steel.
Mohamed Zakaria Zahaf   +1 more
doaj   +1 more source

Research into Dynamic Error Optimization Method of Impeller Blade Machining Based on Digital–Twin Technology

open access: yesMachines, 2023
A TC4 impeller blade is a typical weak, rigid, thin–walled part. The contact area between a cutting tool and a workpiece has strong time–varying characteristics. This leads to a strong non–linear variation in cutting load.
Rongyi Li   +6 more
doaj   +1 more source

Influence of Elastomer Layers in the Quality of Aluminum Parts on Finishing Operations [PDF]

open access: yes, 2020
In finishing processes, the quality of aluminum parts is mostly influenced by static and dynamic phenomena. Different solutions have been studied toward a stable milling process attainment.
Lamikiz, Aitzol   +3 more
core   +2 more sources

A Study on Improving the Machining Performance of Scrolls

open access: yesApplied Sciences, 2022
To improve machining efficiency and product precision in scroll manufacturing, we studied three adaptive milling processes: adaptive feed rate planning, chatter suppression measures, and optimization of milling parameters during the rough, semi-fine, and
Yi-Tsung Lin   +5 more
doaj   +1 more source

Research on Surface Roughness of Supersonic Vibration Auxiliary Side Milling for Titanium Alloy

open access: yesChinese Journal of Mechanical Engineering, 2022
The processed surface contour shape is extracted with the finite element simulation software. The difference value of contour shape change is used as the parameters of balancing surface roughness to construct finite element model of supersonic vibration ...
Xuetao Wei   +5 more
doaj   +1 more source

Technology for programming contour milling on a CNC machine

open access: yesEastern-European Journal of Enterprise Technologies, 2022
Представлено нову технологію проєктування керуючих програм для контурного фрезерування на верстатах з числовим програмним керуванням (ЧПК). Технологія забезпечує стабілізацію процесу різання по всьому контуру на оптимальному рівні за рахунок управління подачею, що забезпечує підвищення продуктивності при виконанні вимог щодо обмежень.
Yuriy Petrakov   +2 more
openaire   +3 more sources

Spatial Path Planning for Robotic Milling of Automotive Casting Components Based on Optimal Machining Posture

open access: yesMetals, 2022
The robotic milling of automotive casting components can effectively reduce human participation in the production process and enhance production efficiency and quality, but the premise addresses the reasonable planning of machining paths.
Hao Wu, Yudi Wang, Xiaoxu Wei, Dahu Zhu
doaj   +1 more source

Analytical and experimental study of feed rate in high-speed milling [PDF]

open access: yes, 2013
In the context of high-speed milling (HSM), during the machining process dynamic machine response has to be identified. To achieve this, we have to calculate the feed rate evolution in linear and circular interpolation according to dynamic performance of
Baili, Maher   +4 more
core   +3 more sources

The self-excitation damping ratio: A chatter criterion for time-domain milling simulations [PDF]

open access: yes, 2004
Regenerative chatter is known to be a key factor that limits the productivity of high speed machining. Consequently, a great deal of research has focused on developing predictive models of milling dynamics, to aid engineers involved in both research and ...
Altintas   +15 more
core   +1 more source

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