Study of the clamping force in a pneumatic wedge device

Tocut, Pavel Danut; Stanasel, I.; Avram, F. T.

doi:10.1088/1757-899x/1169/1/012022

Cited by 2 publications

(2 citation statements)

References 1 publication

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“…Previous studies investigated the design of pneumatic clamping systems for fixtures [15][16][17]. These systems are intended to anchor the workpiece to the turret during working [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of a Pneumatic Clamping System for Direct-Driven Rotary Tables

et al. 2023

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Modern direct-driven and high-speed rotary tables with torque motor are optimally suited for all handling and assembly applications that require the shortest indexing times and flexible positioning. The following paper is devoted to the study, the design, and the optimization of an innovative table clamping system (brake for accurate positioning) actuated by pneumatic energy, working at a maximum clamping pressure of 6 bar. The challenge for the aforementioned application is related to developing a solution able to provide a maximum tangential torque (with clamping actuated) in the range of thousands of Nm without leveraging the use of high-pressure hydraulic energy. The optimization of the proposed solution is based on the precise calculation of the stresses in order to perform a fatigue assessment and on the elastic deformation of the clamps in order to set the correct tolerances between the mating parts. Eventually, an experimental campaign is carried out in order to tune the numerical model, which is then used to validate the proposed design solution.

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Section: Introductionmentioning

confidence: 99%

Design and Optimization of a Pneumatic Clamping System for Direct-Driven Rotary Tables

et al. 2023

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“…the sliding up distance); thus, the activation threshold is eliminated. The kinetic principle behind this is the same as the wedge‐lock mechanism used in coupon test wedge grips, 29 pneumatic wedge clampings, 30 cable anchors 31,32 and subsea pipeline recovery tools 33 . In these applications, a set of wedge blocks is placed against sloped restraints (e.g.…”

Section: Introductionmentioning

confidence: 99%

The Sliding Keys on Inclined Deflecting‐cantilevers (SKID) device: Empirical and analytical sensitivity analysis with application in post‐tensioned frames

Zhang

Risi

Alexander

2022

Earthq Engng Struct Dyn

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Previously, the authors presented a new theoretical energy dissipating technology termed a Frictional Sliding on a Sprung Slope (FSSS) device. Its purpose was to provide significant energy dissipation to post‐tensioned (PT) frames structures. The FSSS device has a triangular‐shaped hysteretic curve, which has a zero‐force activation threshold. This enables activation for any earthquake magnitude and provides progressively greater energy dissipation with an increase in structural oscillations. In addition, it is designed to allow full self‐centring of the PT framed structure. In this paper, a physical prototype FSSS is designed, constructed and experimentally tested. The prototype replaces the theoretical springs, bearings and the constraints with pairs of cantilever bars. Consequently, it is renamed a Sliding Keys on Inclined Deflecting‐cantilever (SKID) device. Six scaled SKID configurations having different manufacturing parameters were built and tested. Also, five materials were used to investigate the sensitivity to the friction coefficient of the sliding pads. Both cyclic and fatigue tests were conducted to assess SKID performance empirically. A finite element model of SKID was then implemented in OpenSees and benchmarked against the experimental results. More than 700 one‐story one‐bay PT frames with different SKID devices (PT‐SKID frames) were numerically tested to investigate the dynamic characteristics of the structural system affecting the seismic response. Based on the extensive experimental and numerical analyses, design suggestions are provided, and the PT‐SKID self‐centring features are discussed.

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Study of the clamping force in a pneumatic wedge device

Cited by 2 publications

References 1 publication

Design and Optimization of a Pneumatic Clamping System for Direct-Driven Rotary Tables

Design and Optimization of a Pneumatic Clamping System for Direct-Driven Rotary Tables

The Sliding Keys on Inclined Deflecting‐cantilevers (SKID) device: Empirical and analytical sensitivity analysis with application in post‐tensioned frames

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