scholarly journals Tap and Other Thread Cutting Tools

2020 ◽  
Vol 86 (11) ◽  
pp. 858-862
Author(s):  
Sadayuki AKAKI
Keyword(s):  
Author(s):  
Александр Ямников ◽  
Aleksandr Yamnikov ◽  
Дмитрий Волков ◽  
Dmitry Volkov

It is established that cutting with gear-cutting and thread-cutting tools is not free that results in the increase of loading upon tool tips and their quick wear. The layers of metal cut are subjected to considerable shear deformation and also to other kinds of deformation. In this connection the wear character of a tool and its properties will change. There is considered a process of chip removal by trapezoidal and triangular cutters (as in case of metal cutting off with teeth of a hob may be used not three but two tool tips) and the impact of a cutting face profile angle upon a shear deformation degree is also considered. There are shown analytical dependences for the definition of angles of a chip flow, a relative shear, a deformation degree of a shear and a value of tangential stresses in the cutting area taking into account the influence of the strength of material machined, width and thickness of a layer cut and a friction factor. The dependences are checked up at cutting with a trapezoidal cutter.


2010 ◽  
Vol 30 (7) ◽  
pp. 742-744
Author(s):  
I. Ya. Mirnov ◽  
A. A. Malikov ◽  
I. L. Sandgarten ◽  
A. S. Yamnikov
Keyword(s):  

2008 ◽  
Author(s):  
M. Sundar ◽  
D. Whitehead ◽  
P. Mativenga ◽  
L. Li ◽  
Y. Shicai ◽  
...  
Keyword(s):  

2020 ◽  
Vol 38 (12A) ◽  
pp. 1862-1870
Author(s):  
Safa M. Lafta ◽  
Maan A. Tawfiq

RS (residual stresses) represent the main role in the performance of structures and machined parts. The main objective of this paper is to investigate the effect of feed rate with constant cutting speed and depth of cut on residual stresses in orthogonal cutting, using Tungsten carbide cutting tools when machining AISI 316 in turning operation. AISI 316 stainless steel was selected in experiments since it is used in many important industries such as chemical, petrochemical industries, power generation, electrical engineering, food and beverage industry. Four feed rates were selected (0.228, 0.16, 0.08 and 0.065) mm/rev when cutting speed is constant 71 mm/min and depth of cutting 2 mm. The experimental results of residual stresses were (-15.75, 12.84, 64.9, 37.74) MPa and the numerical results of residual stresses were (-15, 12, 59, and 37) MPa. The best value of residual stresses is (-15.75 and -15) MPa when it is in a compressive way. The results showed that the percentage error between numerical by using (ABAQUS/ CAE ver. 2017) and experimental work measured by X-ray diffraction is range (2-15) %.


2018 ◽  
Vol 60 (9) ◽  
pp. 893-901 ◽  
Author(s):  
Hasan Basri Ulas ◽  
Musa Bilgin ◽  
Huseyin Kursad Sezer ◽  
Murat Tolga Ozkan
Keyword(s):  

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