CAD AND CAE TECHNOLOGIES OF A NOVEL PLANE SIX-BAR SWAYING MACHINE

2008 ◽  
Vol 07 (01) ◽  
pp. 65-67
Author(s):  
CHANGPING ZOU ◽  
LI DU ◽  
XIANDE HUANG
Keyword(s):  
High Pressure ◽  
Kinetic Analysis ◽  
Rotational Speed ◽  
Preliminary Analysis ◽  
Unit Weight ◽  
The Novel ◽  
Parameterized Modeling ◽  
New Type ◽  
Working Principle ◽  
Key Dimensions

A new type of six-bar swaying machine was put forward, which is an ingenious combination of plane multi-bar mechanism and high pressure oil cylinder. Preliminary analysis shows that this machine has many advantages, such as the torque produced by its unit weight, its small size, its light deadweight, etc. Thus it can be applied to situations that need swaying mechanism with low rotational speed and great torque. Firstly, the mechanism composition and working principle of the swaying machine were introduced. Secondly, parameterized modeling of the mechanism was carried out by utilizing software ADAMS. Then kinematic analysis and kinetic analysis were completed by using ADAMS. Finally, key dimensions were adjusted according to kinetic analysis. These tasks are believed to be beneficial to the development of the novel transmission.

Innovation of the Advanced Actuator

2012 ◽  
Vol 249-250 ◽  
pp. 382-385
Author(s):  
Chang Ping Zou ◽  
Jian Qiong Feng
Keyword(s):  
Computer Simulation ◽  
High Pressure ◽  
Optimal Design ◽  
Structural Model ◽  
Power Source ◽  
Gear Train ◽  
Unit Weight ◽  
Hydraulic Pressure ◽  
New Type ◽  
Weight Dimension

Actuator is a kind of swaying mechanism whose power source is the hydraulic pressure oil, which may be widely applied to varied occasions where need swaying mechanisms, such as aircraft, tank, ship, train, etc. An aircraft needed a most advanced actuator which can produce torque up to 28kg•m with its unit weight, and set strict demands on such indexes as weight, dimension. According to existing plan, an actuator was designed and manufactured, being far inferior to requirement, which adopted a complex gear train composed of 2K-H and 3K planetary reductors. On the basis of analyzing existing dozens of reductors, a new structure that achieves swaying with multi-start ball guide screw driven by reciprocating piston rod of high-pressure oil cylinder was put forward. Having analyzed and compared more than ten new type of plans, a structural model of straight-rotary ball pair was proposed, an ideal plan of identical radius ball-return was found, a new spatial tight ball-return curve was designed, and the optimal design of the advanced actuator was finished. Computer simulation and prototype experiment made clear that each index of the advanced actuator could satisfy the aircraft’s demand.

Design Method of the Advanced Actuator

2012 ◽  
Vol 249-250 ◽  
pp. 378-381
Author(s):  
Chang Ping Zou ◽  
Jian Qiong Feng
Keyword(s):  
High Pressure ◽  
Service Life ◽  
Design Method ◽  
Mechanical Efficiency ◽  
Modern Method ◽  
Unit Weight ◽  
Internal Diameter ◽  
Ball Diameter ◽  
Working Principle ◽  
Major Project

The advanced actuator is a kind of swaying mechanism being an ingenious combination of high pressure oil cylinder and ball helical transmission, has lots of advantages, such as the torque produced by its unit weight is the greatest, dimension is little, weight is light, mechanical efficiency is efficient, service life is long, reliability is high, etc, it may be widely applied to varied occasions which need swaying mechanisms with low rotational speed and great torque.This paper firstly introduces mechanism composition and working principle of the advanced actuator.Then gives ascertaining methods on such key parameters as helical lift angle,pitch diameter,ball diameter,oil pressure and internal diameter of oil cylinder, etc.Next summarizes the analyzing and designing methods of the advanced actuator in a systematic way.Lastly points out three problems requiring thorough study.Successful development of the advanced actuator is an example of fulfilling major project by adopting modern method of design.Its systematic methods on analyzing and designing make further advances on the theories of ball helical transmission.

Method to reduce the oil pressure during HPHT diamond synthesis: FEM simulations and experiments

CrystEngComm ◽  
2020 ◽  
Vol 22 (44) ◽  
pp. 7601-7606
Author(s):  
Chunxiao Wang ◽  
Hong-an Ma ◽  
Liangchao Chen ◽  
Xinyuan Miao ◽  
Liang Zhao ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Cell Assembly ◽  
Diamond Synthesis ◽  
Fem Simulations ◽  
High Pressure High Temperature ◽  
New Type

Here, a new type of supercharged cell assembly is proposed that can effectively reduce the oil pressure during high-pressure, high-temperature (HPHT) diamond synthesis.

Considerations on Designing Artificial Muscle Working at High Pressure

2012 ◽  
Vol 268-270 ◽  
pp. 1457-1463
Author(s):  
Li Chao Wang ◽  
Xiao Dong Wang
Keyword(s):  
High Pressure ◽  
Material Properties ◽  
Weight Ratio ◽  
Artificial Muscle ◽  
Force Output ◽  
Compact Structure ◽  
Small Power ◽  
Small Force ◽  
Working Principle ◽  
Contraction Angle

Artificial muscle is a new style of actuator with novel working principle, which owns the advantages of compact structure, high power-to-weight ratio, compliance and easy application. Pneumatic artificial muscle (PAM) is usually used in robotics, medical auxiliaries and other small force output occasions nowadays. However, it suffers problems of small power, hysteresis and poor repeatability. A kind of artificial muscle working at high pressure was researched. Different muscle styles are compared and MicKibben structure is selected while fluid media is determined. Furthermore, factors of geometry and material properties, which limit the ultimate pressure, are analyzed. Formulas and simulations verify the influence of limitation and help to calculate key parameters of 18MPa artificial muscle. Data show that it is possible in theory to design high pressure artificial muscle by overall consideration of initial diameter, initial contraction angle and material properties, initial length only influent the stroke.

Modified apical dissection and lateral prostatic fascia preservation: Preliminary analysis of the reproducibility of the novel technique

2021 ◽  
Vol 79 ◽  
pp. S1745
Author(s):  
B.M.C. Rocco ◽  
L. Sarchi ◽  
S. Assumma ◽  
A. Cassani ◽  
F. Turri ◽  
...  
Keyword(s):  
Preliminary Analysis ◽  
The Novel ◽  
Novel Technique

The Novel Complex[LRuIV(μ-O)3RuIVL][PF6]2·H2O–a Molecular Section of the Structures of BaRuIVO3(High-Pressure Phase) and Ba5/6Sr1/6RuIVO3

1989 ◽  
Vol 28 (6) ◽  
pp. 763-765 ◽  
Author(s):  
Peter Neubold ◽  
Beatriz S. P. C. Della Vedova ◽  
Karl Wieghardt ◽  
Bernd Nuber ◽  
Johannes Weiss
Keyword(s):  
High Pressure ◽  
High Pressure Phase ◽  
The Novel ◽  
Novel Complex ◽  
Pressure Phase

The Application of Mechanism Theory to a Textile Machinery Innovation

1976 ◽  
Vol 190 (1) ◽  
pp. 367-378 ◽  
Author(s):  
G. R. Wray
Keyword(s):  
High Speed ◽  
Practical Experience ◽  
Mechanism Analysis ◽  
The Novel ◽  
Traditional Practice ◽  
Textile Technology ◽  
Theoretical Investigations ◽  
Analysis And Synthesis ◽  
New Type ◽  
Machinery Manufacturing

The design of mechanisms for use in practical machinery applications is often of a trial-and-error nature based on traditional practice. Much emphasis has been given to the theory of mechanisms in recent years but this has yet to find wide practical application. This paper is a case study of how a basic idea, conceived by University-based inventors and intended to improve a slow method of making a textile pile fabric, became a reality in the form of a completely new type of high-speed textile machine for making an improved textile product, all within a time scale of four years. It also shows how recent University researches are further advancing its potential from both the machinery manufacturing and textile technology aspects. Step-by-step from the early experimental stages, it illustrates how the challenges of developing the novel mechanisms required for this unconventional machine and process were met by combining practical experience of traditional machinery design with theoretical investigations based on the new techniques of mechanism analysis and synthesis.

The Diaspora of the Novel

1992 ◽  
Vol 2 (1) ◽  
pp. 131-146
Author(s):  
Artemis Leontis
Keyword(s):  
Uneven Development ◽  
Literary Genre ◽  
The Novel ◽  
History Of The Novel ◽  
The West ◽  
The Past ◽  
The Social ◽  
Economic Transformations ◽  
History Of ◽  
New Type

Reflection on the history of the novel usually begins with consideration of the social, political, and economic transformations within society that favored the “rise” of a new type of narrative. This remains true even with the numerous and important studies appearing during the past ten years, which relate the novel to an everbroadening spectrum of ideological issues—gender, class, race, and, most recently, nationalism. Yet a history of the genre might reflect not just on the novel’s national, but also its transnational, trajectory, its spread across the globe, away from its original points of emergence. Such a history would take into account the expansion of western markets—the growing exportation of goods and ideas, as well as of social, political, and cultural forms from the West—that promoted the novel’s importation by nonwestern societies. Furthermore, it could lead one to examine the very interesting inverse relationship between two kinds of migration, both of which are tied to the First World’s uneven “development” of the Third. In a world system that draws out natural resources in exchange for technologically mediated goods, the emigration of laborers and intellectuals from peripheral societies to the centers of power of the West and the immigration of a western literary genre into these same societies must be viewed as related phenomena.

Sign in / Sign up

Export Citation Format

Share Document