资源描述：
《how to build your own cnc machine(4)外语英文电子书》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、How-To:BuildyourownCNCmachine(Part1)PostedJun29th20066:21PMbyWillO'BrienFiledunder:Features,Misc.GadgetsReadyforsomehardcoregadgetcreation?Ifyouthoughtyourdremeltoolwashandybefore,intoday'sHow-Towe'llstartbuildingourownCNCmachine.Asidefromthegeekfactor,itcanbe
2、handyformakingthingslikePCboardswithoutchemicalsormaybesomelittlestyrofoamvoodooheadsofallyourenemies,uhfriends.Gentlemen,startyoursolderingirons.Computercontrolledmillshavebeenaroundforalongtime.Ifyoujustwanttobuyoneone,Sherlinemakesmillsthatarereadytogo(pict
3、uredistheirCNCreadymodel--justaddyourownmotorsandcontroller).Butthenagain,ifyouwantedtobuyone,youprobablywouldn'tbereadingthis,nowwouldyou?ACNCmachineisalotlikeaprecisiondrillpresswithatablethatmovesintwodirections--seeingacommercialunitliketheoneaboveshouldhe
4、lpyouvisualizetheendgoal.We'llbemakingoursfromscrounged,recycled,andadaptedparts;todaywe'llbegoingoverthebasicpartswe'llneedtobuildourown.[Update:Ifyou'renotquitesurewhataCNCmachineis,checkouttheWikipediaarticle,mkay.]PartsHuntingForPart1oftheHow-To,we'llgoove
5、rallthemajorcomponentsoftheprojectandgetstartedwiththecontroller.ThemajorcomponentsoftheDIYCNCmachine:•Steppermotors•drivepositioningscrew•3Axissteppermotorcontroller•LinearslidesThemostimportantcomponenttodeterminetheconstructionofyourmillingmachineisthemotor
6、.Motorscanbepurchasedfromsurplushouses,butthecheapestplacetogetthemisfromolddotmatrixprinters.AppleImagewritersareoneofourfavoritesources.Theycontainmultiplesteppermotors,andtheprimaryisprettybeefy.Asabonus,justabouteverydotmatrixprinterhasahardenedsteelrodtha
7、tcanbeusefulforournefariousgoals.Asteppermotorisanoddbeast.Mostmotorsspinwhenpowerisapplied,steppermotorscontainmultiplecoils.Ifthecoilsareenergizedintheproperorder,themotorwillrotateasmallamount(astep).We'lltakefulladvantageofthenatureofsteppermotorswiththisp
8、roject.Tosimplifyyourlifelateron,you'llwanttofindsteppermotorswithmorethanfourwires.FourwiremotorsareusuallyBipolarmotors.Theyproducemoretorque,butendupcomplicatingthecontrolcircui
