Results 1 to 10 of about 998,789 (338)

Study on design of taper shaped skiving cutters for internal gears (Taper shaped cutter ground with trapezoidal wheels used for pinion cutter grinding)

Nihon Kikai Gakkai ronbunshu, 2017
Taper shaped skiving cutters are commonly used in gear skiving because they provide clearance angles under a simple gear arrangement and they could have lower cutting resistance than cylindrical skiving cutters. Their tooth flanks are generally ground by
Koichiro URIU, Tsukasa OSAFUNE, Takanori MURAKAMI, Morimasa NAKAMURA, Daisuke IBA, Masami FUNAMOTO, Ichiro MORIWAKI   +6 more
doaj   +4 more sources

Experimental study on shale-breaking of special-shaped cutter PDC bit

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
To enhance the drilling efficiency and extend the service life of PDC (Polycrystalline Diamond Composite) bits in shale formations, this study delves into the rock-breaking mechanisms of special-shaped cutters through a comprehensive experimental ...
Chunliang Zhang, Xin Yang, Zhaoliang Zhu, Xiaohua Ke, Zhaofeng Zhang, Hua Luo, Yong Ma, Dongdong Song   +7 more
doaj   +3 more sources

Cutting mechanism of a special 3D concave-shaped PDC cutter applicable to the Weiyuan shale

Journal of Petroleum Exploration and Production Technology, 2023
The Weiyuan shale gas field faces problems of long drilling cycles and high development costs. Improving the drilling efficiency of polycrystalline diamond compact bits in shale formations will significantly reduce the overall well cost and duration ...
Xiaohua Ke, Jinsheng Sun, Xiongwen Yang, Chi Ma, Jiaqing Yu, Kuiling Huang   +5 more
doaj   +2 more sources

Mechanical properties of rock cutting by disc cutters and feasibility analysis of mechanical mining in Jinchuan No. 3 Mine with hard rock [PDF]

Scientific Reports
Disc cutters are essential rock-cutting tools for Tunnel Boring Machines (TBMs), primarily used in hard rock excavation. However, TBMs are not suitable for mining actives due to limitations in size and flexibility.
Jian Zhao, Dan Huang, Daming Zhu
doaj   +2 more sources

DESIGN OF SHAPED CUTTERS

Science and Technology of Kazakhstan, 2021
The article proposes an algorithm for designing round shaped cutters by graphical and analytical methods. Depending on the shaped profile of the part, this algorithm systematizes the calculation and allows you to apply a unified approach and easily automate it. The purpose of the design is the possibility of automating and reducing the calculation time
null A. Zh. Kassenov, null A. S. Yanyushkin, null A. V. Mazdubay, null D. A. Iskakova, null T. L. Yevtushenko   +4 more
openaire   +1 more source

Surface Micro-Texture and Cutting Characteristics of Milling Cutter for Die-Casting Aluminum Alloy

Shanghai Jiaotong Daxue xuebao, 2021
Aimed at the problems of low processing accuracy and surface quality of die-casting aluminum alloy under the influence of cutting force, a method of using surface micro-textured milling cutter with groove and V-shaped arrays on the rake face was proposed.
HE Lihua, PAN Jianfeng, NI Jing, FENG Kai, CUI Zhi
doaj   +1 more source

Study on rock breaking efficiency of special shaped cutters

IOP Conference Series: Earth and Environmental Science, 2022
Abstract The optimization of cutter shape has become one of the main innovation direction of PDC bit technology. At present, both domestic and foreign bit manufacturers have put forward various special shaped cutters to improve rock breaking efficiency.
Qi Peng, Yingcao Zhou, Jiaqing Yu, Xiongwen Yang, Yu Liu, Chi Ma, Chris Cheng, Xiaohua Ke   +7 more
openaire   +1 more source

Experimental Study of Penetration Capability of an Annular-Shaped Charge under Multipoint Synchronous Initiation

Shock and Vibration, 2023
The large-distance penetration capability of an annular-shaped charge under multipoint synchronous initiation was experimentally investigated. For different annular charge structures and different multipoint initiation settings, incident angle, collision
Liu Jie, Hong Qing, Gao Jiandong, Chen Xi, Du Zhonghua   +4 more
doaj   +1 more source

A Method for Evaluating the Rock Breaking Efficiency of Cutters and Optimizing the PDC Cutter Profile—A Study of Igneous Rock Formations in Shunbei Oilfield

Energies, 2022
The Permian igneous rock in Shunbei Oilfield exhibits high rock strength, which results in a low rate of penetration (ROP) and shortens the cutter’s service life. It is necessary to analyze and evaluate the rock breaking effect of cutters.
Zhuoxin Dong, Hui Zhang, Jun Li, Kuangsheng Zhang, Yangyong Ou, Zongyu Lu, Jiangang Shi   +6 more
doaj   +1 more source

Deviations Induced by Tool Sharpening in the Profile of Three Screw Pump Rotors [PDF]

, 1997
Three screw pumps represent an important family of positive displacement rotary pumps. They are quite easy to construct, even if the use of a shaped milling cutter for the rotor machining can cause some problems when the tool is not new.
MIMMI G., PENNACCHI P.
core   +1 more source