专业夹具设计全英文介绍.pptVIP

* Rotary Coupling circuit Single acting circuit Double acting circuit * Application example * Rotary Valve Couplings Used on rotary table arrangements when loading/unloading of stations is required whilst maintaining clamping pressure on remaining stations Versions include 5,6,7,8,9 10 stations. Applications requiring 2, 3 or 4 stations use 6 8 stations with unused ports plugged. Special designs available Up to 200 bar an accumulator is recommended, above 200 bar it is essential due to internal leakage within the oil return cavity of the unit * Rotary valve coupling function Load station Unload station Rotary coupling Work station Clamping cylinder * Rotary Valve Coupling circuit Single acting Double acting * Application example * Coupling units Quick disconnect couplings One-hand operation quick disconnect Coupling units Automatic coupling systems Threaded coupling elements * Quick Disconnect Couplings Max operating pressure 500 bar One hand operation Always use dustcaps Coupling units * Coupling Units Single or double acting Integral accumulator and pressure gauge Multi-coupler units available Coupling units accumulators * Coupling Systems Always use accumulators on static systems 10 temperature difference relates to 10 bar pressure difference Coupling units accumulators * Threaded coupling elements Breathing * What is breathing? Breathing is the action of single acting cylinders during the spring return part of the component cycle * Why breathing has to be made Excess pressure or vacuum in the spring area changes the spring forces which leads to malfunction Formation of condensation water promotes rust formation and can lead to a complete failure of the elements Leakage of hydraulic seals must drain off to exterior without pressure otherwise there will be malfunctions Dust and chips are retained by sintered metal air filters Liquids can be drawn through the sintered metal filter, thus the breathing spring area is reduced, a higher excess pressure or vacuum