scholarly journals Kinematic analysis of crank -cam mechanism of process equipment

2018 ◽  
Vol 327 ◽  
pp. 042080
Author(s):  
Yu I Podgornyj ◽  
V Yu Skeeba ◽  
T G Martynova ◽  
N S Pechorkina ◽  
P Yu Skeeba
Keyword(s):  
Kinematic Analysis ◽  
Process Equipment ◽  
Cam Mechanism

Analysis of Single Actuator for Rehabilitation Device of Leg Weakness

2013 ◽  
Vol 465-466 ◽  
pp. 1021-1025 ◽  
Author(s):  
Khairul Fadzli Samat ◽  
Mohamed Hussein ◽  
M.R. Safizadeh
Keyword(s):  
Knee Joint ◽  
Direct Current ◽  
Kinematic Analysis ◽  
Dc Motor ◽  
Knee Joints ◽  
Cam Mechanism ◽  
Stage Of Development ◽  
Initial Stage ◽  
Walking Motion ◽  
Leg Weakness

In this paper, the development of rehabilitation device for patients who encounter walking weakness due to post-stroke effect is presented. The kinematic analysis was carried out in the initial stage of development in order to have an efficient mechanism. As guide to design the device, the walking motion of healthy physical subject for speed of 1 km/h was used and subsequently a mechanism was designed to create similar walking motion. The device functions to inculcate the movement of thigh and calf through appropriate rotation of hip and knee. A single actuator of direct current (DC) motor is used to actuate the rotation of the hip and the knee joints mechanism. The kinematic analysis of constructed device has been performed and the results conformed the functionality of the suggested mechanism. The fabricated prototype proves the combination of DC motor and cam mechanism can actuated the movement of hip and knee joint simultaneously and subsequently reduced the power consumption.

Kinematic Analysis of a Belt Mechanism with a Circular Eccentric Output Element

2012 ◽  
Vol 162 ◽  
pp. 11-18 ◽  
Author(s):  
Dan Perju ◽  
Erwin Christian Lovasz ◽  
Karl Heinz Modler ◽  
Cristian Moldovan ◽  
Iosif Carabas
Keyword(s):  
Kinematic Analysis ◽  
Cam Mechanism ◽  
Incremental Method ◽  
Output Element ◽  
The Given ◽  
Different Order

The paper proposes two methods for kinematic analysis of a belt mechanism with circular eccentric output element (link). One of them is based on the mechanisms geometry and the second on its kinematics in order to obtain the transmission functions of different order. Both approaches are based on a imaginary cam mechanism instantaneous isokinetic with the given belt mechanism. The transmission functions obtained by means of proposed procedures are in a numerical form due to the finite incremental method used in solving the problem.

Geometry Modeling for Indexing Cams Based on Screw Theory and Product of Exponential Formula

2006 ◽  
Vol 505-507 ◽  
pp. 991-996
Author(s):  
Zong Yu Chang ◽  
Yu Hu Yang ◽  
Ce Zhang ◽  
Shou Bin Ding ◽  
Bin Zhang ◽  
...  
Keyword(s):  
Kinematic Analysis ◽  
Screw Theory ◽  
Product Formula ◽  
Coordinate Systems ◽  
Model Surface ◽  
Cam Mechanism ◽  
Geometry Modeling ◽  
Exponential Formula ◽  
Indexing Mechanism ◽  
Systems Transformation

This paper proposes a method of geometry modeling for indexing cam mechanism by using screw theory and exponential product formula. Kinematic analysis based on screw theory is introduced firstly. Then, method to model surface of indexing cams is presented when screw theory and exponential product formula are applied. The paper gives examples to obtain the geometry models of roller gear cam, barrel indexing cam and parallel indexing cam. Our work suggests that this method can avoid the burdensome work on building coordinate systems, transformation matrixes and understanding on the mechanism. Moreover, this method can be used to innovate and design new types of indexing mechanism.

Kinematic Analysis and Virtual Design of the Cutter of Seedling Vegetable Harvester

2013 ◽  
Vol 380-384 ◽  
pp. 152-155
Author(s):  
Yi Guo ◽  
Zhi Qiang Li ◽  
Su Bo Tian
Keyword(s):  
Mathematical Model ◽  
Kinematic Analysis ◽  
Theoretical Basis ◽  
Virtual Design ◽  
Cam Mechanism ◽  
Experimental Purpose ◽  
Displacement Speed

[Purpose] To solve problems in design of the cutter for seedling vegetable harvesters, a cutter with a double-eccentric circle cam mechanism has been built. [Method] A mathematical model for kinematic analysis of cutters driven by a double-eccentric circle cam mechanism has been established. Under the model, Matlab has been employed to make kinematic analysis on displacement, speed and acceleration. Also, SolidWorks software has been adopted for virtual design of parts and assemblies of the cutter. [Results] The cutter has been applied to the seedling vegetable harvester for the experimental purpose and turned out to operate reliably and produce uniform height and leveling shearing fracture. [Results] This design will provide theoretical basis and practical reference for relevant researches.

Analysis and Synthesis of the Dual Roller-Cam Mechanism

1994 ◽  
Author(s):  
Sun-Lai Chang
Keyword(s):  
Kinematic Analysis ◽  
Life Cycles ◽  
Operating Life ◽  
Cam Mechanism ◽  
Analysis And Synthesis ◽  
Force Equilibrium

Abstract A mechanism with two roller-cam pairs as its moving joints has been introduced. In such a mechanism, higher efficiency and longer operating life cycles are expected because of the absence of slippage in its moving joints. The kinematic analysis of this class of mechanisms has been performed. An equivalent geared five-bar mechanism has been utilized for the analysis of velocity. Several characteristics pertaining to this class of mechanisms, such as action angle, force equilibrium and singular position, have been discussed. The synthesis of this class of mechanisms with circular cam profiles has also been studied.

scholarly journals Design of an Arc-Core Moving Mechanism for Injection Molding Using a Link and Cam Mechanism

2021 ◽  
Vol 15 (3) ◽  
pp. 366-374
Author(s):  
Takashi Harada ◽  
Naomichi Tanaka ◽  
Takayuki Fujitsuka ◽  
◽  
◽  
...  
Keyword(s):  
Kinematic Analysis ◽  
Mold Design ◽  
3D Printer ◽  
Injection Mold ◽  
Wide Angle ◽  
Force Transmission ◽  
Cam Mechanism ◽  
Hybrid Mechanism ◽  
Injection Mold Design ◽  
Plastic Injection

A novel plastic injection mold design for a product with a deep arc-hole based on the kinematic analysis is proposed. To move the wide angle arc-core, a hybrid mechanism combining a slider-crank and a swing cam is designed. The force transmission coefficient of the slider-crank and the pressure angle of the swing cam are used to evaluate the dimensions of the mechanism. The motion of the designed mechanism was confirmed by using a prototype made with a 3D printer.

Study on a New Type Massage Device

2013 ◽  
Vol 690-693 ◽  
pp. 3441-3448
Author(s):  
Shun Nian Yu ◽  
Qin Cheng Yang
Keyword(s):  
Dynamic Simulation ◽  
Kinematic Analysis ◽  
Broad Application ◽  
Cam Mechanism ◽  
Rate Adjustment ◽  
New Type ◽  
Prototype Device ◽  
Compression Springs ◽  
Application Prospects

The new type massage device designed is composed of gearing with groove cam mechanism, executive links with double-rocker mechanism, rate adjustment device with bolts, slider and compression springs. The device, which can simulate massage to remove fatigue by adding functions such as heating and magnetic, has broad application prospects. Structures of the massage device, kinematic analysis and the dynamic simulation have been introduced and the parameters on the effect of massage range have been studied in this paper. A prototype device has been made according to the results of the study. It has good massage effect.

Kinematic Approximations in TED and RHEED Analysis of Reconstructed Surfaces

1990 ◽  
Vol 48 (2) ◽  
pp. 396-397
Author(s):  
L. -M. Peng ◽  
M. J. Whelan
Keyword(s):  
Electron Diffraction ◽  
Kinematic Analysis ◽  
Incident Beam ◽  
High Energy ◽  
Energy Electron ◽  
Great Success ◽  
High Energy Electron ◽  
Kinematic Approximation ◽  
Reconstructed Surfaces

In recent years there has been a trend in the structure determination of reconstructed surfaces to use high energy electron diffraction techniques, and to employ a kinematic approximation in analyzing the intensities of surface superlattice reflections. Experimentally this is motivated by the great success of the determination of the dimer adatom stacking fault (DAS) structure of the Si(111) 7 × 7 reconstructed surface.While in the case of transmission electron diffraction (TED) the validity of the kinematic approximation has been examined by using multislice calculations for Si and certain incident beam directions, far less has been done in the reflection high energy electron diffraction (RHEED) case. In this paper we aim to provide a thorough Bloch wave analysis of the various diffraction processes involved, and to set criteria on the validity for the kinematic analysis of the intensities of the surface superlattice reflections.The validity of the kinematic analysis, being common to both the TED and RHEED case, relies primarily on two underlying observations, namely (l)the surface superlattice scattering in the selvedge is kinematically dominating, and (2)the superlattice diffracted beams are uncoupled from the fundamental diffracted beams within the bulk.

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