scholarly journals Design of a Miniaturized Safety Clamping Device for Portable Kidney Replacement Systems

2016 ◽  
pp. 79-87 ◽  
Author(s):  
P. Boscariol ◽  
G. Boschetti ◽  
R. Caracciolo ◽  
M. Neri ◽  
D. Richiedei ◽  
...  
Keyword(s):  
Clamping Device

A Newly Developed Clamping Device for the Tension/Compression Test at Various Strain Rates

2014 ◽  
Vol 626 ◽  
pp. 353-358
Author(s):  
Geun Su Joo ◽  
Min Kuk Choi ◽  
Hoon Huh
Keyword(s):  
Strain Rate ◽  
Sheet Metal ◽  
Metal Forming ◽  
Loading Condition ◽  
Strain Rates ◽  
Compression Tests ◽  
Compression Behavior ◽  
Compression Loading ◽  
Hardening Behavior ◽  
Clamping Device

The tension/compression hardening behavior is important in sheet metal forming processes because of complicated loading paths. Experimental methods to measure the tension/ compression behavior have not considered the effect of the strain rate although the strain rate is related to the hardening behavior of sheet metal. The tension/compression tests need to be conducted considering the strain rate to acquire accurate hardening behavior.This paper deals with an experimental technique to measure the tension/compression behavior of sheet metal at various strain rates. A new clamping device was developed to prevent a sheet specimen from buckling under compression loading condition. Compared to previous clamping devices, the clamping device was devised to uniformly impose a clamping force and easily measure the strain from side of a specimen. Tension/compression tests have been conducted at various strain rates for SPCC and DP590 with displacement of 10%. Hardening curves under the tension or compression loading condition were obtained and analyzed with respect to the strain rate.

scholarly journals Reliability Analysis and Motion Simulation of Steel Coil Upender Clamp

2011 ◽  
Vol 2-3 ◽  
pp. 924-927
Author(s):  
An Yuan Jiao ◽  
Feng Hui Wang
Keyword(s):  
Reliability Analysis ◽  
Driving Force ◽  
Motion Simulation ◽  
Steel Coil ◽  
Turnover Process ◽  
Set Up ◽  
Clamping Device

A kind of new steel coil upender clamping device was designed. The model was set up by use of SolidWorks and the reliability analysis and motion simulation was further performed in ADAMS. Because of risk at steel coil upender, once the accident appears, it gently slowed-up production and damaged the device, and it could cause people’s dying vitally, it is especially important to assure the longtime work and safety of device which we studied on. The results showed that the efficiency of turnover process of the device was high and the system could save driving force. These also provided some theory bases for the design of the device.

Smart Giant Magnetostriction Actuator With Self-Sensing and Thermal Compensation Capability

2000 ◽  
Author(s):  
Yoshio Yamamoto ◽  
Takaaki Makino ◽  
Hiro Matsui
Keyword(s):  
High Energy ◽  
Structure Design ◽  
High Energy Density ◽  
Quick Response ◽  
Thermal Compensation ◽  
Solenoid Coil ◽  
Novel Structure ◽  
Giant Magnetostriction ◽  
Clamping Device ◽  
Novel Applications

Abstract Recently giant magnetostriction materials have drawn a lot of attention because of their unique features which other materials, such as PZT, cannot provide. The features include outstanding magnetostriction, high energy density, high Curie temperature, and quick response. This paper presents two kinds of novel applications of giant magnetostriction materials: a compact fine positioner and a wire clamper. The former is able to achieve highly accurate positioning due to a novel structure design which substantially reduces the influence of Joule heat generated by the solenoid coil. The latter application is motivated by a great demand towards a wire-clamping device for semiconductor manufacturing, which is capable of maintaining a sufficient clamping force without fatigue.

scholarly journals High productivity micro rotary swaging

2018 ◽  
Vol 190 ◽  
pp. 15002 ◽  
Author(s):  
Eric Moumi ◽  
Marius Herrmann ◽  
Christian Schenck ◽  
Bernd Kuhfuss
Keyword(s):  
Material Flow ◽  
Process Variations ◽  
Main Process ◽  
Forming Process ◽  
Workpiece Material ◽  
High Productivity ◽  
Rotary Swaging ◽  
Micro Parts ◽  
Intensive Investigation ◽  
Clamping Device

Rotary swaging is an incremental forming process with two main process variations plunge and infeed rotary swaging. With plunge rotary swaging, the diameter is reduced within a limited section whereas the infeed rotary swaging enables a diameter reduction over the entire workpiece length. The process is now subject to intensive investigation for manufacturing of micro parts. By increasing the process speed, failures occur particularly due to inappropriate material flow. In plunge rotary swaging, the workpiece material can flow radially into the gap between the dies and thus the workpiece quality suffers. In infeed rotary swaging the workpiece material flows against the feeding direction and can provoke bending or braking of the workpiece. Therefore, additional measures to control both the radial and the axial material flow to enable high productivity micro rotary swaging are investigated. The radial material flow during plunge rotary swaging can be controlled by elastic intermediate elements that enable an increase of productivity by factor three. A spring-loaded clamping device that enables an increase of the productivity by factor four can temporarily buffer the axial material flow in infeed rotary swaging against the feeding direction.

Two-Point Floating Clamping Device Based on Fixed Cylinder with Double-Piston and Toggle-Lever Force Amplifier

2011 ◽  
Vol 201-203 ◽  
pp. 2220-2223 ◽  
Author(s):  
Guang Ju Si ◽  
Kang Min Zhong ◽  
Jun Peng Jia
Keyword(s):  
Degrees Of Freedom ◽  
Clamping Force ◽  
Compact Structure ◽  
Mechanical Calculation ◽  
Working Principle ◽  
Working Status ◽  
Clamping Device ◽  
Fixed Cylinder ◽  
Vibration Noise

Two-point floating clamping device, widely used in manufacturing field, can effectively ensure the same clamping force on different workpieces or different surfaces in one workpiece. But due to the application of unitary suspended articulated cylinder, traditional two-point floating devices have disadvantages such as poor working status, great impaction, vibration and noise. A kind of innovatively designed two-point floating clamping devices, with rigidly fixed cylinder replacing unitary suspended articulated cylinder, is presented in this paper. To solve the problem of insufficient degrees of freedom, three different methods are applied. This device has significant advantages in compact structure, small impaction and vibration noise. Moreover, the working principle and mechanical calculation formulas are presented in this paper, which is instructive to the industrial field.

Novel moisture management test of polyethylene terephthalate and nylon fabric under stretching and surface patterning

2016 ◽  
Vol 88 (1) ◽  
pp. 69-79 ◽  
Author(s):  
Jingfeng Huang ◽  
Jackie New ◽  
Jingbin Tham ◽  
Alfred Tok
Keyword(s):  
Polyethylene Terephthalate ◽  
Significant Role ◽  
Absorption Rate ◽  
Surface Patterning ◽  
Actual Behavior ◽  
Pet Fabric ◽  
Moisture Management ◽  
Novel Technique ◽  
Nylon Fabric ◽  
Clamping Device

This report presents a novel technique to assess the moisture management test on uniformly stretched compression fabrics using a clamping device, which represents behavior close to the actual behavior when worn, the effects of stretching on hydrophobic/hydrophilic and surface patterning on polyethylene terephthalate (PET) and nylon fabrics. The wicking behaviors of stretching, coating and patterning are discussed. We report that (1) coated compression fabrics were found to enhance moisture management based on the bottom spreading speed, top absorption rate and one-way transport capability criteria, (2) stretching plays a significant role in moisture management and (3) the best moisture management performance was exhibited by the hydrophobic inner and hydrophilic outer-coated PET fabric, under stretched conditions.

Research on Device of Hydraulic Pushing

2012 ◽  
Vol 580 ◽  
pp. 260-262
Author(s):  
Kai Liu ◽  
Hai Ying Zhou ◽  
Ming Jiang
Keyword(s):  
Simple Structure ◽  
High Efficiency ◽  
Steel Rail ◽  
New Device ◽  
Action Point ◽  
Hydraulic Equipment ◽  
Optimizing Design ◽  
New Type ◽  
Pulling Force ◽  
Clamping Device

The new device of hydraulic pushing device achieves enclasping of clamping device and steel rail locking effect by the wedge clamping on the both side of the steel rail, so as to provide thrust and pulling force action point for the cylinder of hydraulic equipment. Compare with other devices, the new type of device has more advantages like : simple structure, reliable clamp, easy erection and high efficiency. To further optimize the mechanical clamping device, the pressure and the friction coefficient of the wedge. the shell and the rail were analyzed emphatically. Combining experimental data and the reasonable angle of wedge and optimizing design direction was applied.

Active Stiffening of Composite Materials by Embedded Shape-Memory-Alloy Fibres

1996 ◽  
Vol 459 ◽  
Author(s):  
J.-E. Bidaux ◽  
J.-A. E. Månson ◽  
R. Gotthardt
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Vibration Frequency ◽  
Composite Beam ◽  
Natural Vibration ◽  
Transformation Strain ◽  
Natural Vibration Frequency ◽  
The Matrix ◽  
Clamping Device ◽  
Composite Response

ABSTRACTThe use of shape-memory-alloy (SMA) fibres to actively changethe stiffness of a composite beam is investigated on a model system composed of an epoxy matrix with a series of embedded pre-strained NiTi fibres. Stiffness changes are detected through shifts in the natural vibration frequency of the beam. When electrically heated, the pre-strained NiTi fibres undergo a phase transformation. Since the shape recovery associated with the transformation is restrained by the constraints of both the matrix and the clamping device, a force is generated. This force leads to an increase in the natural vibration frequency of the composite beam. Depending on the degree of fibre pre-strain, either ordinary martensite, R-phase or a mixture of the two can be stress-induced. It is found that the R-phase gives rise to the largest change in vibration frequency for a given temperature increase and the most reversible behaviour. Its low transformation strain is also more favourable for fibre-matrix adhesion. The effect of stress relaxation in the polymer matrix on the composite response is discussed.

Clamping Device for Wall Penetrating Pipe

2019 ◽  
Vol 07 (04) ◽  
pp. 271-278
Author(s):  
瑞环 李
Keyword(s):  
Clamping Device
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