Results 31 to 40 of about 998,789 (338)
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2015 The purpose of this paper is to achieve machining equal base circle bevel gears with a pot-shaped gear cutter. Based on the theory, the feasibility is analyzed, the coordinate systems of cutting, on both convex and concave surfaces, are established, and ...
Jing DENG +3 more
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The increase in efficiency of milling of small-sized grooves of shaped form in hard-to-reach places of molds for rubber-technical products [PDF]
Омский научный вестник, 2020 This article discusses the methods of processing gas exhaust grooves on molds for rubber goods planning on a curved surface. The purpose of this work is to improve the efficiency of processing gas-venting grooves of angular shape on molds for rubber ...
I. N. Drozdov, A. Yu. Popov
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Shiyou jixieWhen the PDC bit is used to drill conglomerate formations， the frequent impact loads reduce the expected life of PDC cutter， leading to frequent bit changes and ultimately affecting drilling efficiency.
Shi Jiangang +5 more
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Numerical Simulation on Rock-Breaking Mechanism of Axe-shaped Cutter
Shiyou jixie, 2022 Axe-shaped cutter has good impact resistance and wear resistance,can improve the rock-breaking efficiency of PDC bit,and is widely used in high abrasive and hard formations.In this paper,based on elastic-plastic mechanics and rock mechanics,taking ...
Gong Junyun, Wu Wenxiu, Zhou Zonggan
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ECONOMIC EFFICIENCY OF ROLLING GEAR-SHAPING CUTTERS OF ASSEMBLY CONSTRUCTION- BASIC PROVISIONS AND ASSESSMENT [PDF]
Fiabilitate şi Durabilitate, 2021 Technical backgrounds and reasons of economic and social efficiency of assembly rolling gear-shaping tool are given. It is considered development of methodological procedure of aggregative generalized calculation of its economic efficiency.
Yury GUTSALENKO, Tatyana TRETYAK
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Research on rock-breaking effect of TBM hob and application of new type cutter
矿业科学学报, 2023 TBM hob wear is an important factor that affects the TBM tunneling efficiency and construction cost.Different blade types differ in rock breaking efficiency and wear.By analyzing the rock-breaking mechanism of the arc blade wedged hob, this study ...
Liu Yingchao +4 more
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Shiyou jixie, 2021 The research on rock breaking mechanism of special-shaped non-planar PDC cutter is relatively scarce, and the research on domestic prismatic PDC cutter is even scarcer.
Wei Xiuyan +5 more
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Metal shearing energy absorber [PDF]
, 1973 A metal shearing energy absorber is described. The absorber is composed of a flat thin strip of metal which is pulled through a slot in a cutter member of a metal, harder than the metal of the strip.
Fay, R. J., Wittrock, E. P.
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A Review of State-of-the-Art Large Sized Foam Cutting Rapid Prototyping and Manufacturing Technologies. [PDF]
, 2010 Purpose – Current additive rapid prototyping (RP) technologies fail to efficiently produce objects greater than 0.5?m3 due to restrictions in build size, build time and cost. A need exists to develop RP and manufacturing technologies capable of producing
Aitchison, David +1 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Ongoing evidence indicates increased risk of sarcopenic obesity among children and young people (CYP) with acute lymphoblastic leukemia (ALL), often beginning early in treatment, persisting into survivorship. This review evaluates current literature on body composition in CYP with ALL during and after treatment.
Lina A. Zahed +5 more
wiley +1 more source