可减少设置时间和具有灵活性的工件夹持系统

本资料包含pdf文件1个，下载需要1积分

W orkhoIding System ReducesSet-up Times，Yields Flexibilitycs TooI Engineering，Inc.(Ceda r Sp rings，MI)- a s uPPIie r of PIastic injection a ndcornp ression molds in the automotive，fu rnitu re。

ae rospace and consum e r goods m a rkets (and201 0 Leadtim e Leader Honorable Mention)--waslooking for a flexible workholding system since thecom pany deals with a variety of workpiece sizesthat would also reduce set-up tim es.This m oldm anufactu re r found what it was looking for in theFCS System by Single Source TechnOIOgies，Inc。

Acco rding to CS TooI Ope rations Manage rDonaId Snow，set-up tim es have Posed achaIIenge reIative to any m achining P rOcess--and they take away f rom productive m achiningtime.We m oved fo adding a new HMC with atwo--pallet set-up by which the wo rkpiece couldbe set-up and rem oved frOm one palet whie fhespindle is m achining on the other station s pallet，”Snow explains.In wo rking with a ho rizontaIspindle m achine，just using the conventionaj strapclam P set--up can be a chalenging task as youattem pt to position and clam P the wo rk with onlyone machine ope rato r.Starting out with our newHMC.we struggled with conventionaI clam pingand then indicating the block fo be square withthe m achine travels.A m easu ring p robe in thespindfe can do fhis without fhe need fo squa reup you r block，but this also takes some operatortime as the wo rkpiece is Iiving in an unknownposition on the palet.”The modula r FCS system is a g rid-basedsystem fhaf uses each Jocating point as a Iocatorand clam P point，Single Sou rce Techn0IOgiesTooling Consultant Jjm Minock points out.Them ain reference g rid is set at 50m m spacing witha P recise positicnatoIe rance.”he corn m ents。

Usualy，on a single-plate application，the cente r· 86· 第O1期 数控机床市场hole becom es the ze ro pcint.This establishesthe physical workspace machine x-y zero.Sincem ost tooIpaths a re P rog ram m ed using CAMsoftware，the wo rkholding can be planned in thevi rtual workspace in advance for each m achine orope ration。

The m a rriage of the vi rtual wo rkspace tothe physical one has a IeveI of p recision of 6m icrons，Minock continues.The FCS m ountingis pIanned by the designe r/P rog ram m e r.whodecides whe re io locate fhe wo rk piece and fheFCS clamps to the g rid，”he says.W hen thejob gets to the m achine，the clam ping units arepositioned；the part placed on the clam ps and thejob js ready to run.The res no running around tonnd nuts，rods o r straps，no need to pick up thepart for x-y zero.”Minock adds that the FCS system providessystem atic and planned wo rkholding to reduceset-up tim e and im p rove the flow Of work th roughthe shop.The p rocess to im plem ent the FCSsystem into a shoP is sim PIe，he says.Them ounting in the part is sim ply a th readed holeand a counte r bo re usuaI1Y on 4 pcints.Thepcints can be placed anywhe re on the bottomof the pa rt to avoid part featu res ejecto r holes，o r wate r Iines.as Iong as they stay on the50mm g rid.”And.once the mounting holes arem achined，the counter bores becom e the fixed x-yrefe rence point fo r the ife of the pa rt.The partcan be moved frOm machine fo machiRe and setup quickly without the need to nnd”x-y zero。

Snow rePo rt s that the accu racY andrepeatabjIjty in using the FCS system has notbeen an issue as CS Tool m achinists m ovediffe renf wo rkpieces f rom m achjne to m achiDewith m inim aI positional checks.The accu racyis in you r g rid system of FCS holes whether youpu rchase o r fabricate you r g rid plates，”he notes。

Cu rrently we a re expe riencing accu racies ofIess than .O01 tota1.ODe needs to reinemberthat this system stl1I resPects good set-uPp rinciples relative to the accu racy one is try ngto achieve.And.the system has sim Plifiedthe afo rem entioned DOSItipn and st rap oam Pdilemm a.”CS TooI is ext rem elY haPPY with thesystem s flexibility and sim plicity- coupled withthe fact that the com party is not Iocked into amanufactu red”palet size，Snow says.The FCSsystem CaB be used on any size m old block and/o r com ponenf.”he states.Soree of the othe rsystems out there do not have the size flexibilitythat FCS offe rs as it relates to deaIing withvarying workpiece sizes.”AdditionaIlY.the system has been soIidm odeed so that the CNC P rog ram m e rs can”design”the set-up knowing where the wo rkpiecewill be in the m achine and not have to prog rama round whe re the wo rkPiece m ay have beenc0nvenliOnaIy clam ped，Snow notes.With theFCS system ，we a re saving tim e in a reas ofwo rkpiece p reparation and focational pickuP inthe m achining cente rs.People m ay chalIengethe time it takes to machiDe the th readed holeand quaIified counte r bo re necessa ry in usingFCS.but once those holes a re instalIed youhave a featu re that can be used repetitively andaccu rately in diffe rent m achines th roughout thebuild process。

0 riginally we set out to equiP ou r newHMC with the FCS system and soon found thatwe had m o re m achining applicationS than theone m achine had capacity and/o r size，”Snowcontinues.We set out to equip another sm ale rVMC with the fabrication of another set-up of g ridplates and before we could get that m achine setup，ou r p rog ramme rs and m achinist had thoseg rid plate pieces m punted in othe r m achiningcente rs to sire plify the clam ping and m achineprocess.Having the ability to m achine five sidesof you r wo rkpiece in one set-uP，o r rotatjnga blpck wifh a second o r fhi rd set-up withoutpicking up in a th ree-axis m achine，is a big tim esave r- and the accU racy and repealabiIitY isthere.”Snow adds that while the initiaI cost of thesystem is not an inexpensive unde rtaking，thereduction in setup time and flexibility the systemsprovide s a paradigm shift in current processingm ethods.At a minimum we can save 50 percentof ou r set-up time，”he explains.Ou r goal is tohave this FCS system of g rid plates in al of ou rm ajor pieces of equipm ent-from the boring m il1。

gun d rilI and m achining centers to the EDM andCMM.Think of the hou rs that can potentialy besaved- and tu rned into cutting tim e!，也第O1期 数控机床市场 ·8了·