Results 31 to 40 of about 44,195 (310)

The effects of machining process variables and tooling characterisation on the surface generation: modelling, simulation and application promise [PDF]

open access: yes, 2004
The paper presents a novel approach for modelling and simulation of the surface generation in the machining process. The approach, by integrating dynamic cutting force model, regenerative vibration model, machining system response model and tool profile ...
Altintas   +8 more
core   +1 more source

Improvement of Stability Limit by Spindle Speed Variation

open access: yesJournal of the Japan Society of Precision Engineering, 1977
By a programed variation of the spindle speed of machine tools, it is possible to control the onset of the regenerative-type self-excited chatter. In this paper, the effect of the wave form of spindle speed variation and the practical improvement of the metal removal rate in this method are theoretically analyzed, and the results are verified by some ...
Tadashi TAKEMURA   +2 more
openaire   +2 more sources

Realization of High Efficiency and Low Damage Machining of Anisotropic KDP Crystal by Grinding [PDF]

open access: yes, 2019
Potassium dihydrogen phosphate (KDP) is a non-linear material used in various opto-electronic applications including Q-switches, high-speed photography shutters, frequency harmonic generation lens and Pockels cells in the Inertial Confinement Fusion (ICF)
Cai, Rui   +4 more
core   +1 more source

Optimizing Cutting Conditions for Minimum Surface Roughness in Face Milling of High Strength Steel Using Carbide Inserts

open access: yesAdvances in Materials Science and Engineering, 2016
A full factorial design technique is used to investigate the effect of machining parameters, namely, spindle speed (N), depth of cut (ap), and table feed rate (Vf), on the obtained surface roughness (Ra and Rt) during face milling operation of high ...
Adel Taha Abbas   +3 more
doaj   +1 more source

Predictive Modeling of Thermally Assisted Machining and Simulation Based on RSM after WAAM

open access: yesMetals, 2022
The WAAM (Wire Arc Additive Manufacturing) process is well-respected because of its low cost and high deposition efficiency; nevertheless, the process has the limitations of high heat input and low forming accuracy.
Hongyu Tian, Zhenyang Lu, Shujun Chen
doaj   +1 more source

Effect analysis of bearing and interface dynamics on tool point FRF for chatter stability in machine tools by using a new analytical model for spindle-tool assemblies [PDF]

open access: yes, 2007
Self-excited vibration of the tool, regenerative chatter, can be predicted and eliminated if the stability lobe diagram of the spindle–holder–tool assembly is known.
Budak, Erhan   +4 more
core   +1 more source

Variation Spindle Speed for the Suppression of Chatter in Milling

open access: yes, 2022
In metal machining, regenerative chatter seriously affects tool life, part surface quality and cutting efficiency. To suppress chatter generated during milling, researchers have proposed a variable spindle speed technique. But the previous VSS milling model is based on two degrees of freedom system (two-DOF).
Li, Chao   +3 more
openaire   +1 more source

Novel Technique for Enhancing the Strength of Friction Stir Spot Welds through Dynamic Welding Parameters

open access: yesMetals, 2021
Presently, friction stir spot welding (FSSW) has become a common alternative for spot welding technologies. Over the years, researchers have implemented various methods for enhancing weld strength.
Ahmed Badwelan   +3 more
doaj   +1 more source

Burr size investigation in micro milling of stainless steel 316L

open access: yesInternational Journal of Lightweight Materials and Manufacture, 2019
Deburring of micro-parts is one of most complicated operations used in manufacturing of micro sized components. Therefore, restriction of burr formation is one of main objectives of micro-cutting processes.
Saeed Hajiahmadi
doaj   +1 more source

Integration of dynamic behaviour variations in the stability lobes method: 3D lobes construction and application to thin-walled structure milling [PDF]

open access: yes, 2006
Vibratory problems occurring during peripheral milling of thin-walled structures affect the quality of the fin- ished part and, to a lesser extent, the tool life and the spindle life.
Arnaud, Lionel   +3 more
core   +3 more sources

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