Mefuta ea mapolanka
Ho sebetsa ka mapolanka ho etsoa haholo-holo ka mechine e fapaneng ea mapolanka. Lisebelisoa tsa ho betla ka matsoho li sebelisoa e le lithuso bakeng sa ho kopanya le ho khanna lihlahisoa ka har’a li-grooves, joalo-joalo Ho na le mefuta e latelang ea ho lokisa lehong ka mechine: ho seha, ho sakha, ho sila, ho bora, ho phunya, ho rera le ho etsa lehlabathe (Fig. 1). Lisakha tsa foreimi, lisakha tse chitja le tsa ntlha, lithipa tsa ho seha le ho hohla, lithapo tsa ho sila, liboro, liketane, lichesele le sandpaper li sebelisoa e le lisebelisoa tsa ho seha, ho seha le ho rereletsa.
Picture 1 - Mefuta ea ho sebetsa ka lehong: a - ho khaola; b - ho itšeha; c - ho sila; d - ho sila; e - ho senya; f - ho sila.
Li-blades le li-angles tsa tsona
Lisebelisoa tsa ho itšeha, tse sebelisetsoang ho lokisa lehong, kamehla li na le li-wedges tse le ‘ngoe kapa tse’ maloa. Kahoo, ho etsa mohlala, meno a foreimi, li-circular le li-band saws, li-blades tsa lithipa tsa scraper, meno a li-milling cutters, joalo-joalo li na le sebōpeho sa li-wedges tse bohale tse etsang ho itšeha. E le hore li-blades tsena tse bōpehileng joaloka chedge li khone ho rema lehong ka tlhahiso e phahameng le ho fana ka boleng bo khotsofatsang ba ho sebetsa, hoa hlokahala hore li be ka lehlakoreng le itseng la likhoele tsa lehong ’me li be le boholo bo itseng le sebōpeho.
Lithulusing tsena tsa ho itšeha, tse sebelisetsoang ho etsa mapolanka, ho na le li-angles tse latelang tsa blade: angle ea ho itšeha, e hlalosoang ke tlhaku δ, angle e bohale - ka tlhaku β, lehlakoreng le ka pele - ka lengolo γ, lehlakoreng le ka morao - ka lengolo α. Kakaretso ea lehlakoreng le ka morao le angle e bohale kamehla e fana ka angleδ = α + β(feie.2).
Setšoantšo2- Angular elements ea lehare.
E le hore u finyelle bohloeki bo phahameng ba ho sebetsa ka holim’a lehong le ho qeta mosebetsi o monyenyane ka hohle kamoo ho ka khonehang ka ho itšeha, ho hlokahala hore u khethe mokhoa o motle ka ho fetisisa oa ho itšeha, angle e bohale, ka pele le ka morao ho itšeha angle ho ea ka mofuta oa lehong, mongobo oa eona le tataiso ea ho itšeha. Joalo ka sekhutlo se senyenyane ka ho fetesisa, sekhutlo sa30°; sekhutlo sa tataiso ya motsamao wa thipa kapa mokokotlo o ka morao o nkuwa10-15°; sekhutlo se sehang se nkuoe45-74°.
Ho seha tsela e lebang likhoele
Ho ea ka tataiso ea ho itšeha mabapi le likhoele tsa lehong, ho na le linyeoe tse tharo tse ka sehloohong tsa ho khaola: ka pele, ka longitudinal le transverse (fig. 3). Ho itšeha ka nako e telele, ho pota-pota le ka pele ho etsoa ka seoelo, hobane thipa nakong ea mosebetsi e lula e le lehlakoreng le itseng ho ea ho thollo ea lehong.
Image 3 - Likarolo tse tharo tse kholo tsa ho rema lehong: a - ka pele; b - ka longitudinally; c - e fetelletseng.
Ho chorisa lisebelisoa
Sesebelisoa sa ho itšeha se leotsoa ka lisebelisoa tse khethehileng tsa ho chorisa kapa ka letsoho, ka taba ea hore sesebelisoa sa ho seha, ka mor’a ho leotsa, se tlameha ho boloka sebopeho sa pele sa lehare le likarolo tse lumellanang le tse ling.
Lihlooho tse amanang: liseha tsa sehlopha, mechini e sakhang selika-likoe, lepolanka le sakhang la lehong le thata, mapolanka le tlhahiso ea lifensetere tsa mapolanka monyako.