Results 161 to 170 of about 5,459,981 (199)

Identification of Machining Chatter Marks on Surfaces of Automotive Valve Seats

Journal of Manufacturing Science and Engineering, Transactions of the ASME, 2011
In this paper, we propose a method for inspecting machining chatter marks on automotive valve seats using image processing technique. Chatter or self-excited tool-workpiece relative vibration is unacceptable in the machining processes of valve seats, because it causes poor surface finish and can create internal leaks in the engine.
Reuven Katz
exaly   +2 more sources

Analysis and Control of Chatter Marks of Strip Steel on HC Cold Rolling Mill

Advanced Materials Research, 2012
According to the chatter marks on strip steel of HC cold rolling mill , by analysis the collected vibration and simulation analysis on rolling mill, it is found that chatter marks of strip steel surface cuased by the Seventh-order natural frequency. Then, for analysising cuase of chatter marks on strip steel surface, relevant inhibiting chatter marks ...
Zhi Jiang Xie
exaly   +2 more sources

Scatterometric analysis of chatter marks occurring in industrial grinding processes

Proceedings of SPIE, 2010
Grinding processes often underlie chattering which results in a wavy surface of the ground metal sheet. In this work it will be shown that the angle resolved light scattering method is not only suitable to monitor industrial grinding processes, in both waviness and roughness modes, but also enables the determination of the waviness of a ground ...
András Vernes
exaly   +2 more sources

Analysis of chatter marks damage on the Yankee dryer surface of a tissue machine

Engineering Failure Analysis, 2012
A tissue machine suffering from Yankee chatter marks has been experimentally investigated. A series of vibration measurements during normal operation at various Yankee speeds on both the creping and the cleaning blade holders have been carried out. The analysis in a frequency range up to 20 kHz has permitted to identify speed dependent frequency peaks ...
Oscar de la Torre, Francesc Xavier Escaler Puigoriol, Eduardo Egusquiza Estevez   +2 more
exaly   +4 more sources

Chatter marks reduction in meso-scale milling through ultrasonic vibration assistance parallel to tooling’s axis

International Journal of Precision Engineering and Manufacturing, 2012
Recently, vibration assistance has been mainly applied to feed and cross-feed directions for milling processes. This paper investigates the effect of ultrasonic vibration assistance in tooling’s axial direction for improvement of machined surface with reduction of chatter marks.
Jeong Hoon Ko
exaly   +2 more sources

A feedback controller for milling chatter vibration control using a new response matrix

Journal of Vibration and Control, 2021
A chatter mark is a result of irregular vibration that affects the milling process, which results in poor surface finish, reduced work quality, machine impairment, and high production cost.
B. B. Muhammad, Muhammad Bashir, M. Hamza, Mustapha Abdulhadi, Muhammad Auwal Shehu, Sanjoy Kumar Debnath, Susama Bagchi   +6 more
semanticscholar   +1 more source

Experimental investigation and mitigation of chatter in milling machine using magnetorheological fluid

i-manager's Journal on Mechanical Engineering, 2022
The major problem in all machining operations is chatter which constitutes excessive vibration between tool and the workpiece. Due to the generation of chatter, tool life, reliability and safety of machining operation will be shortening. Mechanical smart
N. Nithya, Priyanka D. Sony, R. Kaviraj, Perumal M. Prasanna, M. Jagadheesh, Kumar S. Naveen   +5 more
semanticscholar   +1 more source

Optical measurements of chatter marks

Wear, 1986
Abstract When testing geometrical elements of machined components one distinguishes between form, waviness and roughness. To describe the roughness there is a choice of parameters which cover various functions. To describe the form and waviness, there are only the peak-to-valley values.
N. Rau, G. Huebner
openaire   +1 more source

Optical Measuring Instrument for Chatter Marks

CIRP Annals, 1984
Summary A new instrument has been developed and is now in use on shop floor for inspecting chatter marks sometimes generated by the grinding and the ultra-precision machining process. The instrument is able to measure both geometrical waviness and fluctuation of glossiness of the finished surface.
Y. Sakai, S. Ogata, S. Asai, T. Hoshi
openaire   +1 more source

Self-Excited Chatter and its Marks in Turning

Journal of Engineering for Industry, 1984
Investigations were made on self-excited chatter of the work which is held at one end on a lathe machine. Analysis was carried out by a two-degrees-of-freedom system. It was verified that introduction of the multiple regenerative effect governs the finite amplitude of the vibration after it is excited.
T. Kaneko, H. Sato, Y. Tani, M. O-hori
openaire   +1 more source