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A review of process parameters in friction drilling on joining of steels

Selvaraj R.M., Hynes N.R.J.

Archives of Materials Science and Engineering

2023

Vol. 119, nr 1

12--20

Purpose: Friction drilling is a unique way of creating holes in steel. In a solitary advance, a rotating conical tool is utilized to enter by penetrating as an opening on the surface of the sheet and making a bushing without making a chip. During this process, the heat produced by the frictional power linking the device and the sheet metal workpiece is used to pierce and make a bushing out of work. The goal of this novel hole-making process is to improve the bushing length in the thin-walled sheet metals by forming a bush and then combining thin sheet metals. The inconceivable utilizations of warm grating penetrating in a few modern areas will introduce another period of interfacing processes for different work materials in automobiles. Design/methodology/approach: Researchers have undergone numerous experiments based on the machining parameters, including spindle speed, feed rates, Friction Contact Ratio (FACR), tool angle, tool diameter, sheet thickness, and the output of the friction drilling, includes the bushing length, surface roughness, tool wear, hardness, thrust force, torque and microstructural evaluation. Findings: The crucial concerns that should be addressed and researched by researchers in the near future, such as determining the optimal machining parameters of such process and analysing, bushing length, microstructural impacts on the many aspects and their performance, are highlighted. Research limitations/implications: This research paper tends to examine the advancements in research on the friction drilling method and its applications, taking into account the benefits and limits of friction drilling. Practical implications: The present paper identifies the machining parameters and their contribution towards the output level of various materials like Stainless steel, Brass, aluminium, titanium, tempered steel and nickel-based compounds of different thickness. Originality/value: The machining parameters like spindle speeds, feed rate, tool angles, thrust force, Torque, surface roundness, bushing height, frictional heat and tool diameter are optimized in the friction drilling. The incorrect bushing is formed due to the high thrust force, and Low temperatures cause ductility and softening issues.

Wpływ ustawienia stożkowego narzędzia trzpieniowego na zarys zwoju ślimaka

Skoczylas L.

Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika

2008

z. 75 [259]

198-204

W artykule przedstawiono matematyczny opis śrubowej powierzchni bocznej zwoju ślimaka stożkopochodnego kształtowanego narzędziem trzpieniowym. Podany sposób pozwala na obliczenie współrzędnych powierzchni zwoju, dla wichrowatego ustawienia narzędzia w stosunku do osi ślimaka. Przedstawiono kilka przykładów zarysu zwoju ślimaka obliczonego dla różnych ustawień narzędzia.

The paper presents mathematical description of the helical surface of K-worm tooth generated with use conical tool. The introduced method makes possible calculation of coordinates of surface tooth, for twist setting of tool in relation to axis of worm. The paper contains several examples of worm tooth profile calculated for different settings of tool.