Experimental investigations of threads surface integrity manufactured by cutting insert and with internal thread rolling head

2020 ◽  
Vol 31 ◽  
pp. 334-341
Author(s):  
Ştefan Ţălu ◽  
Haci Sağlam ◽  
Recai Kus ◽  
Miroslaw Bramowicz ◽  
Slawomir Kulesza
2016 ◽  
Vol 90 (9-12) ◽  
pp. 3507-3522 ◽  
Author(s):  
Hüseyin Gürbüz ◽  
Ulvi Şeker ◽  
Fırat Kafkas

2020 ◽  
Vol 979 ◽  
pp. 142-148
Author(s):  
K. Gobivel ◽  
K.S. Vijay Sekar ◽  
G. Prabhakaran ◽  
R. Sugin Elankavi

Inconel 718 is a nickel-based super alloy well suited for high-temperature applications encountered in space shuttles, aircraft black box and turbocharger due to their inherent properties. Taking into account of extreme working conditions, efficiency in the process of machining without affecting the nature of the surface integrity with utmost care assumes a lot of importance. In this current study, an attempt has been made to investigate the influence of cutting speed and feed rate on various machining aspects like cutting forces, chip morphology, surface roughness and tool wear during the orthogonal turning of Inconel 718. Also, the work has been focused on feed forces and thrust forces to understand the proper material deformation behaviour and surface integrity.


Author(s):  
Varun Sharma ◽  
Pulak M Pandey

The present paper describes the effect of cutting and vibration parameters on the surface roughness of specimen machined by ultrasonic-assisted turning with self-lubricating cutting inserts. The selected process has been based on comparative analysis between conventional turning and ultrasonic-assisted turning using plane and textured cutting inserts. An improvement of the order of 35.89% is observed during ultrasonic-assisted turning with textured cutting insert as compared to conventional turning with plane tool. The latter part of the paper uses response surface methodology for performing the experimentation during ultrasonic-assisted turning with textured cutting insert. The experimental data have been analyzed using analysis of variance to highlight significant contributions of depth of cut, feed rate, cutting speed, and percentage intensity of ultrasonic power on surface roughness. The significant interactions among process parameters have also been analyzed to explain the possible alteration in the mechanism of material removal during ultrasonic-assisted turning using self-lubricating inserts. The best surface finish of the order of 0.431 µm has been found under optimal cutting and vibration parameters as evaluated by optimization of the developed statistical model using genetic algorithm.


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