Ngalo lonke ixesha ukuqhubela phambili ngequbuliso kunye nokubalulekileyo kwenzeka kwihlabathi lezixhobo, kwaye kwiminyaka embalwa edlulileyo yayilinye lala maxesha. Ibizwa ngokuba yi-brushless motor technology, kwaye ithembisa ukonyusa ngoko nangoko ukusebenza kwezixhobo ezingenantambo kwibhodi. Bonke abavelisi bezixhobo bazisa izixhobo ezingenabrashi ukuthengisa ngoku, kwaye nangona izixhobo ezininzi ezingenazintambo kwiishelufa zevenkile azikabikho brushless okwangoku, itekhnoloji entsha kufanelekile ukuyijonga. Ukuqonda ukuba kutheni, kufuneka uqonde ukuba yintoniibrashikonke malunga kumxholo weenjini zombane. Ungazibona ezi ntlobo zimbini zeenjini zingezantsi, zivulwe kancinci ukuze zibonakale ngexesha lovavanyo lwam lwesixhobo.

I-Makita drill ekhohlo ineebhrashi zemveli, kwaye iMilwaukee ngasekunene ayinabrashi. Bonke ubuxhakaxhaka bomatshini boyilo oluxutyiweyo luchathwe kukulula koomatshini bokujikeleza kwangaphakathi.

Ngokwesiko, iimotor zesixhobo samandla zibandakanya iibhloko ezincinci, ezilayishwe entwasahlobo zekhabhoni efihliweyo ngaphakathi. Ezi bloko zibizwa ngokuba ziibhulashi (nangona zibukeka zifana ne "brashi" kwaye zingenayo i-bristles) kwaye zicinezela ngokubhekiselele kwindawo ejikelezayo yemoto, ukuhambisa umbane kuyo njengoko ijika, ngelixa inceda ukudala indawo yombane ejikelezayo. Yiyo le ndawo ijikelezayo ngaphakathi kwemoto eyenza ukuba ijikeleze, kwaye iibrashi zibe yinxalenye ebalulekileyo yokwenza oku kwenzeke ngaphezu kwekhulu leminyaka. Kodwa njengoko beziluncedo, iibrashi zibeka imida emibini emikhulu. Ziyaguga kwaye zibangela ukukhuhlana.

Ekubeni iibhrashi zenzelwe ukukhuhla kumalungu angaphakathi ajikelezayo, ziyaguga ekuhambeni kwexesha. Yiloo ndlela kanye eyiyo, kwaye ukuba iibrashi azitshintshwanga ngexesha, nasiphi na isixhobo semoto siya konakaliswa ngokusetyenziswa okuqhubekayo. Enye ingxaki ngeebrashi ngamandla eziwachithayo. Ukuhlikihla kuthetha ukukhuhlana kunye nokuntlantsi, kwaye oku kuguqulela kumsebenzi omncinci owenziweyo kwintlawulo yebhetri nganye, konke okunye kuyalingana.

Izixhobo zebrashiIcala lokunxiba kunye nengxaki yokukhuhlana, kwaye bakwenza oku ngoyilo olulula kakhulu kuneenjini ezindala, zesitayile sebrashi. Ezi ndidi zimbini zoqheliso zibonisa icala necala apha ngasentla zibonisa umahluko, nokuba awazi nto malunga neenjini ngokuqinisekileyo ungawubona umahluko.

Yintoni enokuba lula kunale? Inxalenye yangaphakathi ye-drill engenazintambo ene-brushless motor ibonisa indlela elula ngayo le ndlela. Ubomi obude bokusebenza kunye nokungqubana okuncinci kwangaphakathi zezona zizathu zi-brushless izixhobo ze-motor zilapha ukuze zihlale.

Endaweni yenkqubo yomatshini yeebhrashi, imithombo kunye nezinye iindawo ezenza iimoto zombane ze-DC zijikeleze, izixhobo ze-brushless zisebenzisa i-electronic circuitry ukufezekisa into efanayo kunye neendawo ezimbalwa ezihambayo. Iziphumo ngamabango amade kakhulu avela kubavelisi obomi obude besixhobo kunye nomsebenzi omninzi ophunyeziweyo ngentlawulo nganye. Iinjini zebrushless izixhobo kufuneka zihlale ubuncinci be-1000% ixesha elide kuneenjini zesitayile sebhrashi phambi kokuba ziphele, kwaye kufanele ukuba zizise umsebenzi ongaphezulu wama-50% kwibhetri enikiweyo phambi kokuba itshaje. Kodwa kulula ukwenza amabango, kwaye yiyo loo nto ndigqibe kwelokuba ndijonge ubunyani ngokwam.

Ukuvula le DEWALT brushless drill ibonisa imotor elula yebrushless power tools. I-circuitry kunye neengcingo eziphuma kuyo zithatha indawo yeebrashi zoomatshini kunye nemithombo.

Ukuvavanyaisixhobo brushlessisantya kunye nonyamezelo, ndifakele i-18 volt Milwaukee FUEL 2604 brushless drill ngohlobo olufanayo lwe-9/16” i-drill bit ndiyifaka kwiidrill ezimbini ezitsha, ezithelekisekayo zebrush-style: i-20 volt DeWALT DCD989 kunye ne-18 volt Makita BHP454. Zonke izixhobo ezithathu zazichase ngokupheleleyo iibhetri ze-3.0 amp-yure ekuqaleni kovavanyo ngalunye. Ndiye ndalinganisa ukuba zingaphi i-intshi ezili-10 zemingxuma enzulu endinokuyigrumba ekupheleni kweenkuni zeemaple eziqinileyo ngentlawulo enye, kwaye kuthatha ixesha elingakanani ukugrumba le mingxuma. Ndaluphinda olu vavanyo amatyeli amaninzi, ndilinganisa amanani emveliso kunye nesantya sokuchaneka. Umgca ongezantsi: I-Milwaukee brushless FUEL igrunjwe iqhube i-40% ixesha elide kuneyona ndlela ingcono yokukhuphisana yokubhobhoza kwibhetri yobukhulu obufanayo, kunye ne-22% ngokukhawuleza kunomzekelo olandelayo. Ujongo oluthe kratya kwiiyantlukwano zangaphakathi zobugcisa phakathi kwebrashi ngokuchasene nebrashi, kunye nokubona kakuhle ukuba zontathu iindlela zokuqhuba zithelekiseka enye kwenye.

Iinzuzo zokusebenza ezinikezelwa ngezixhobo ezingenasibrashi ziza ngokunciphisa umthamo wamandla alahlekileyo ngendlela yobushushu, kunye nokuguqula la mandla endaweni yomsebenzi. Ngaphandle kweyantlukwano enokumetwa kwisantya kunye nonyamezelo, unokuwuva umahluko kwisandla sakho ngelixa usebenzisa i-drill phantsi komthwalo. Ngelixa ubushushu obuninzi bebugqabhuka ngaphandle kweendawo zokukrola zebrashi ngelixa kusonjwa, iMilwaukee yabaleka ipholile ngokubonakalayo - njengoko ubunokulindela.