Hydraulic and Servoelectric Clamping Units

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F16%3A00335644" target="_blank" >RIV/68407700:21220/16:00335644 - isvavai.cz</a>

Výsledek na webu

<a href="http://ichp.vsb.cz/2016/cz.html" target="_blank" >http://ichp.vsb.cz/2016/cz.html</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Hydraulic and Servoelectric Clamping Units

Popis výsledku v původním jazyce

Manufacturing of airplane structural parts requires attaining a constant material thickness with an accuracy of 0.1 mm. Nowadays the wing profiles are clamped on prepared beds, which are machined negatively to achieve a perfect fit with the workpiece. To provide a universal clamping system which would be independent of a final product it was necessary to come up with some intelligent fixture solution. Due to specific safety requirements of aircraft industry it is necessary to manufacture the whole part from a block of material. It is obvious that the behaviour of the workpiece must vary with the ongoing machining process. In both cases it was necessary to come up not only with a hardware solution, but also with a software solution and a control algorithm. Based on the experience with machining processes, servomotor units have been designed. They consist of a servomotor, a gearbox, a ball screw for precise positioning and guiding rods with clamping brakes. This includes the development of modular active clamping systems for leveling the workpiece in the support points, the use of self-adjusting clamping units with internal force and position sensors, and a closed-loop control unit commanding the fixture elements based on the sensor’s information and the control algorithm. In this case the high-pressure hydraulics is used for clamping. Two more types of units have also been proposed: one provides a pre-deformation of workpiece before machining, and the other enables pressure scanning and adjustment to prevent material damage during the machining process or the manipulation phase. Prototypes of these units were made and their functionality has been verified during the machining process. Control algorithm and sequence control of electro-hydraulic clamping devices have also been tested. The most important outcome is enabling a smart synergistic cooperation of servomotor units and hydraulic clamping systems with commands and needs of the machine.

Název v anglickém jazyce

Hydraulic and Servoelectric Clamping Units

Popis výsledku anglicky

Manufacturing of airplane structural parts requires attaining a constant material thickness with an accuracy of 0.1 mm. Nowadays the wing profiles are clamped on prepared beds, which are machined negatively to achieve a perfect fit with the workpiece. To provide a universal clamping system which would be independent of a final product it was necessary to come up with some intelligent fixture solution. Due to specific safety requirements of aircraft industry it is necessary to manufacture the whole part from a block of material. It is obvious that the behaviour of the workpiece must vary with the ongoing machining process. In both cases it was necessary to come up not only with a hardware solution, but also with a software solution and a control algorithm. Based on the experience with machining processes, servomotor units have been designed. They consist of a servomotor, a gearbox, a ball screw for precise positioning and guiding rods with clamping brakes. This includes the development of modular active clamping systems for leveling the workpiece in the support points, the use of self-adjusting clamping units with internal force and position sensors, and a closed-loop control unit commanding the fixture elements based on the sensor’s information and the control algorithm. In this case the high-pressure hydraulics is used for clamping. Two more types of units have also been proposed: one provides a pre-deformation of workpiece before machining, and the other enables pressure scanning and adjustment to prevent material damage during the machining process or the manipulation phase. Prototypes of these units were made and their functionality has been verified during the machining process. Control algorithm and sequence control of electro-hydraulic clamping devices have also been tested. The most important outcome is enabling a smart synergistic cooperation of servomotor units and hydraulic clamping systems with commands and needs of the machine.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20302 - Applied mechanics

Projekt

<a href="/cs/project/7E13050" target="_blank" >7E13050: INTElligent FIXture for the manufacturing of low rigidity components</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings Of The 23rd International Conference on Hydraulics and Pneumatics

ISBN

978-80-248-3915-8

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

25-32

Název nakladatele

VŠB - Technical University of Ostrava

Místo vydání

Ostrava

Místo konání akce

Praha

Datum konání akce

1. 6. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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