Results 61 to 70 of about 55,331 (264)

Tooth Contact Analysis of Straight Bevel Gears Machined with Concave Cutters

open access: yesJixie chuandong
In order to use the concave cutter to process the straight bevel gear on the domestic CNC spiral bevel gear machine tool, the principle of using the concave cutter to process the straight bevel gear and the TCA method of tooth surface contact analysis ...
Wang Zhiyong   +3 more
doaj  

Study on Cylindrical Gears with Curved Tooth Traces. (Basic Characteristics and Tooth Contact Analysis).

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 2000
In this study, a new type of cylindrical gears has been manufactured by use of CNC hobbing machine. This paper presents a detailed investigation on various characteristics of the gears with curved tooth traces. The contact ratio are calculated. The limits of undercutting and tooth pointing are determined.
DAI, Yutang   +3 more
openaire   +2 more sources

Early stages of tooth development in the harbor porpoise Phocoena phocoena

open access: yesThe Anatomical Record, EarlyView.
Abstract Here we describe the stages of tooth development in toothed whales on the basis of the harbor porpoise (Phocoena phocoena). The aim of the study was to find out whether these stages are identical to those of other mammals analyzed so far although toothed whales are homodont and monophyodont.
Lasse M. Mathes   +2 more
wiley   +1 more source

MODELING AND CARRYING CAPACITY ANALYSIS OF CIRCULAR ARC TOOTH PROFILE CIRCULAR ARC TOOTH LINE CYLINDRICAL GEAR

open access: yesJixie qiangdu, 2022
Circular arc tooth line cylindrical gear is a kind of cylindrical gear with convex and concave curve teeth which is processed by spiral bevel gear milling machine.
JIANG BiQiong   +3 more
doaj  

Oldest well‐preserved euprimate petrosal, from the early Eocene of India (Vastan Lignite Mine, Gujarat)

open access: yesThe Anatomical Record, EarlyView.
Abstract An exquisitely preserved, isolated partial petrosal with associated fragmentary stapes is described from the Vastan Lignite Mine (Gujarat, India), dated to the early Eocene (~54.5 Ma). Several anatomical traits (e.g., large petrosal plate; posterolateral entry of the internal carotid artery to the tympanic cavity; bony tubes surrounding the ...
Mary T. Silcox   +8 more
wiley   +1 more source

Exploring the cranial morphology and possible convergences of Triassic non‐crocodylomorph pseudosuchians (Archosauria: Pseudosuchia) with other sauropsids through linear morphometrics

open access: yesThe Anatomical Record, EarlyView.
Abstract Triassic pseudosuchians had highly diversified cranial morphologies. These archosaurs occupied diverse ecological roles, ranging from terrestrial predators and herbivores to semiaquatic ambush predators and possible waders. Here, we apply linear cranial morphometrics to assess possible convergences with other sauropsids from the clades ...
Rafael Terras   +3 more
wiley   +1 more source

Comparison of Skin Model Representations and Tooth Contact Analysis Techniques for Gear Tolerance Analysis [PDF]

open access: yesJournal of Computing and Information Science in Engineering, 2015
To improve the tolerancing process in an industrial context, there exists a strong need for tolerance analysis to estimate the probability of scrap in an acceptable computer time and managing the accuracy of the results. The developed approaches for gear tolerance analysis based on simulation, depend on the type of the Skin Model representation, and on
openaire   +3 more sources

Description of large, well‐preserved Enchodus specimens from the Bearpaw Formation of Alberta, Canada

open access: yesThe Anatomical Record, EarlyView.
Abstract Fishes of the genus Enchodus were abundant and cosmopolitan in the Late Cretaceous, but are primarily known from isolated remains in Canada. Four well‐preserved fish skulls were recovered in recent years from ammolite mines sampling the Bearpaw Formation of Southern Alberta, and are here referred to Enchodus petrosus Cope, 1874.
Luke E. Nelson   +2 more
wiley   +1 more source

弧齿线锥形齿轮啮合特性研究

open access: yesJixie chuandong, 2013
In order to improve the sensitivity of error and increase tooth strength,the conical gear with concave-concave tooth traces and the convex-convex tooth traces are generated by two blade-discs.The mathematical model of gear tooth surface is performed by ...
苏进展, 方宗德
doaj  

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