Investigation of the torque characteristics in vibration tapping of hardened steel

Ticari Saflıktaki Molibdene HSS Kılavuzlarla Vida Açma İşleminde Kesme Hızının Etkisi

“…Kılavuz ile vida açma konusunda bugüne kadar birçok farklı çalışma yapılmıştır. Yin ve Han, yüksek hız çeliği kılavuzun, sertleştirilmiş çelikte (50HRC), küçük deliklerde (M3 vida), yetersiz kaldığından yola çıkarak bu problemi çözmek için titreşimli klavuz çekme özelliğini araştırmışlardır [7]. Kayır, AISI 1050 malzemesine açılan deliklere TiN kaplamalı ve kaplamasız HSS makine kılavuzları ile vidalar açmıştır.…”

CAD Simulation Study on the Principle of Tapping with Modified-tooth Tap

“…The cutting method with a standard tap belongs to shaping method, but some tough problems of tapping hard-to-cut materials of high-temperature alloy GH4169 and titanium alloy TC4 etc. remain, such as the ones of a tap easy to be broken and bad tapping quality as well as lower productivity etc [1][2][3] modified-tooth tap is a new structure one with which the machining way belongs to the principle of generating broaching, i.e. formation method of loci.…”

Experimental investigation of ultrasonic vibration-assisted tapping

“…The significant findings they reported included the following: the thickness of the aluminum chips produced during tapping was reduced from 250 to 100 m; the torque was decreased by 20 times, while the cutting ration was increased by three times [7]. Yin and Han built a vibration tapping apparatus for investigating the influence of tapping parameters on the performance of tapping hardened steel [8]; and they drew the conclusion that the inclusion of vibration to assist tapping could enhance the rigidity of torsion torque, while the tapping torque was simultaneously reduced.…”