id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-3248	Hao, Shuai; Qiu, Hao	Research on Simulation Model of Ultra Deep Hole Machining of Nickel Base 718 Alloy	2022	4	.pdf	application/pdf	2251	103	59	Therefore, it is difficult to ensure the quality and efficiency ratio of deep hole processing with large depth diameter ratio for gun drilling nickel base 718 alloy and other difficult cutting materials: on the one hand, nickel base 718 alloy has the characteristics of high strength, high density, low heat conductivity and work hardening during processing; On the other hand, with the increase of drilling depth, the straightness deviation of deep holes is larger. In this paper, based on gun drilling theory and finite element method, the model of gun drilling nickel base 718 alloy and the calculation model of straightness deviation of deep holes are established: the influence of internal angle, external angle, rotational speed and feed rate on the drilling force of gun drilling and the influence of straightness deviation of deep holes are studied.	cache/ajst-3248.pdf	txt/ajst-3248.txt