Kinematic Analysis and Design of Eccentric Rolling Transmission

2017 ◽  
Author(s):  
Stanislaw Pabiszczak ◽  
Adam Myszkowski ◽  
Roman Staniek ◽  
Lukasz Macyszyn
Keyword(s):  
Kinematic Analysis ◽  
Design Procedure ◽  
Gear Ratio ◽  
Output Shaft ◽  
Cad Model ◽  
The Novel ◽  
Rolling Bearings ◽  
Analysis And Design ◽  
Input Shaft ◽  
New Type

The paper shows an idea of a new type of mechanical gear — the eccentric rolling transmission. The main parts of that transmission are rolling bearings, mounted eccentrically on the input shaft which cooperate with the special-shaped cam wheels mounted on the output shaft. The number of rolling bearings is equal to the number of cam wheels. On the basis of kinematic analysis equations of the curve which describe a shape of cam wheels were determined for two different cases: in the first one the directions of shafts rotations were opposite, and in the second they were the same. Kinematic analysis of the novel transmission was carried out to determine maximum gear ratio depending on the adopted input parameters. As a result of analyses a design procedure of the eccentric rolling transmission and CAD model were prepared.

A New Type of Pneumatic Triangle Wave Oscillator

1967 ◽  
Vol 89 (2) ◽  
pp. 406-414
Author(s):  
Seth R. Goldstein
Keyword(s):  
Theoretical Analysis ◽  
Low Power ◽  
High Power ◽  
Short Distance ◽  
Design Procedure ◽  
Load Flow ◽  
Analysis And Design ◽  
Wave Oscillator ◽  
New Type ◽  
Simplified Analysis

A new type of pneumatic oscillator is presented which produces triangular waveforms of pressure versus time. The device can be used for both high power and low power applications. It utilizes a freely floating disk which translates back and forth a short distance inside a housing between two dynamically unstable flapper nozzle valves. A theoretical analysis of the performance and stability of the device is given. A simplified analysis and design procedure which accounts for load flow is shown. Several prototype units were successfully operated and the experimental results obtained with them are described and compared with the predicted results.

Shaft Drive CVT: A New Type CVT Applying Crossed Axle Traction Drive

2003 ◽  
Author(s):  
Masashi Yamanaka ◽  
Katsumi Inoue ◽  
Genso Igari ◽  
Yukihito Narita
Keyword(s):  
Power Transmission ◽  
Contact Point ◽  
Design Procedure ◽  
Transmission Efficiency ◽  
Input Output ◽  
Geometrical Analysis ◽  
Traction Drive ◽  
Input Shaft ◽  
New Type ◽  
Input Torque

The crossed axle traction drive developed by the authors is applied to a new mechanism of CVT, the Shaft Drive CVT. The input and output shafts with conical disks are parallel and a idler shaft having conical rollers at both ends is placed perpendicular to the input/output shafts. This idler shaft transmits a torque from the input shaft to the output shaft and its movement produces the speed variation by changing the contact point between the input/output disks and the idler rollers. The purposes of this study are 1) to propose the new CVT mechanism, 2) to design a curved shape of disk to decrease an amount of spin caused by the movement of contact point, 3) to develop a prototype to confirm the CVT to work and to evaluate the effect of curved disk by means of a power transmission efficiency. The design procedure of shapes of disk and roller are shown by geometrical analysis. The amount of spin is reduced 80% using the proposed concave disk. The range of speed changing ratio of the prototype is 0.5 to 2. The efficiency of 80% was obtained in case of input torque 10 Nm at uniform rate by using the conical disks. The effectiveness of concave disk is evaluated by comparing the experimental results using the conical and concave disks, respectively.

A New Simplified Approach to the Kinematic Analysis and Design of Epicyclic Gearboxes

1995 ◽  
Vol 209 (1) ◽  
pp. 49-53 ◽  
Author(s):  
A A Fogarasy ◽  
M R Smith
Keyword(s):  
Kinematic Analysis ◽  
Building Blocks ◽  
Kinematic Constraint ◽  
Simplified Approach ◽  
Analysis And Design ◽  
Constraint Equations ◽  
Epicyclic Gear ◽  
Simplified Method ◽  
New Type ◽  
Gear Drives

The present paper introduces a much simplified method for the kinematic analysis of epicyclic gear drives. It is based on the concept of the existence of only two basic building blocks and their kinematic constraint equations. These can easily be found by inspection of the relevant kinematic structural diagram. A new type of notation is used which is simpler and more versatile than those of previous methods and is adaptable to depicting the kinematic alternatives of any particular drive without the need for drawing structural diagrams.

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.

Kinematic analysis and design of a novel 6-degree of freedom parallel robot

2014 ◽  
Vol 229 (2) ◽  
pp. 291-303 ◽  
Author(s):  
DU Hui ◽  
GAO Feng ◽  
PAN Yang
Keyword(s):  
Set Theory ◽  
Kinematic Analysis ◽  
Parallel Mechanism ◽  
Design Methodology ◽  
Parallel Robot ◽  
End Effector ◽  
Analysis And Design ◽  
Velocity Models ◽  
Reachable Workspace ◽  
Rotational Motions

A novel 3-UP3R parallel mechanism with six degree of freedoms is proposed in this paper. One most important advantage of this mechanism is that the three translational and three rotational motions are partially decoupled: the end-effector position is only determined by three inputs, while the rotational angles are relative to all six inputs. The design methodology via GF set theory is brought out, using which the limb type can be determined. The mobility of the end-effector is analyzed. After that, the kinematic and velocity models are formulated. Then, workspace is studied, and since the robot is partially decoupled, the reachable workspace is also the dexterous workspace. In the end, both local and global performances are discussed using conditioning indexes. The experiment of real prototype shows that this mechanism works well and may be applied in many fields.

Analysis and Design Procedure of a mm-Wave Class-E Power Amplifier

2021 ◽  
pp. 105036
Author(s):  
Habib Ghasemizadeh ◽  
Abdolreza Nabavi ◽  
Member IEEE ◽  
Mohsen Haghighat
Keyword(s):  
Power Amplifier ◽  
Design Procedure ◽  
Analysis And Design ◽  
Class E

Kinematic design and motion analysis of spatial rapier drive mechanisms used in weaving machines

2014 ◽  
Vol 84 (19) ◽  
pp. 2065-2073 ◽  
Author(s):  
Recep Eren ◽  
Mesrur Erturk ◽  
Barıs Hascelik
Keyword(s):  
Motion Analysis ◽  
Kinematic Analysis ◽  
Gear Ratio ◽  
Main Shaft ◽  
Drive Mechanism ◽  
Spatial Mechanism ◽  
Kinematic Design ◽  
Shaft Angle

This paper presents an approach for the kinematic design of a rapier drive mechanism containing a spatial mechanism and analyses rapier motion curve. Kinematic design and analysis equations are derived and then the link lengths of the spatial mechanism are calculated in order to satisfy the critical rapier positions inside and outside the shed. In this way, the portions of one loom revolution, during which the rapiers are inside and outside the shed, are determined. The rapier motion curve is obtained by using kinematic analysis equations. It is shown that the position of the oscillating link in the spatial mechanism and the loom main shaft angle at which the rapier enters the shed have the most significant effect on the rapier motion curve. The gear ratio has also some effect on the rapier motion curve. Different rapier motion curves are obtained by changing these parameters and the suitability of these curves for rapier motion is discussed.

Development of a biped walking robot actuated by a closed-chain mechanism

Robotica ◽  
2005 ◽  
Vol 24 (1) ◽  
pp. 31-37 ◽  
Author(s):  
Hyeung-Sik Choi ◽  
Yong-Heon Park
Keyword(s):  
High Strength ◽  
Gear Ratio ◽  
Ball Screw ◽  
Walking Robot ◽  
Biped Walking ◽  
Link Mechanism ◽  
Closed Chain ◽  
Tracking Ability ◽  
New Type ◽  
Biped Walking Robot

We developed a new type of a human-sized BWR (biped walking robot) driven by the closed-chain type of a joint actuator. Each leg of the BWR is composed of three pitch joints and one roll joint. In all, a 12 degree-of-freedom robot, including four arm joints, was developed. The BWR was designed to walk autonomously; it is actuated by small 90W DC motors/drivers and is has DC batteries and controllers. A new type of the joint actuator for the BWR is composed of the four-bar-link mechanism driven by a ball screw which has high strength and high gear ratio despite its light weight.In this paper, analyses on the four-bar-link mechanism applied to the joint actuator and on the structure of the BWR are presented. Through walking experiments of the BWR, the superior trajectory-tracking ability of the proposed joint actuator is validated.

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.

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