Kuzimitsa mano osiyanasiyana zida zotenthetsera pafupipafupi

Makhalidwe a ntchito yochizira kutentha ndi zofunikira pakuchita zomangira za mpira: screw ndi gawo lofunikira kwambiri pazida zosiyanasiyana zamakina. Ndi njira yotumizira ndikuyika yomwe imasintha kuyenda kozungulira kukhala koyenda mzere kapena kutembenuza koyenda mozungulira kukhala kozungulira. Pali magulu awiri akuluakulu a zomangira zida zamakina: zomangira za trapezoidal ndi zomangira za mpira. Pakati pawo, wononga mpira ndi mkulu kufala dzuwa, zochita tcheru, yunifolomu ndi chakudya khola, palibe zokwawa pa liwiro lotsika, mkulu udindo kulondola ndi kubwerezabwereza, ndi moyo wautali utumiki. Amagwiritsidwa ntchito kwambiri mu zida zamakina a CNC ndi malo opangira makina.

Zomangira za mpira nthawi zambiri zimakhala zopindika, kugwedezeka, kutopa, komanso kukhudzidwa pogwira ntchito, ndipo nthawi yomweyo zimakhala ndi mikangano pazigawo zotsetsereka ndi kuzungulira. Mitundu yayikulu ya kuwonongeka kwa wononga mpira ndi kuvala ndi kutopa. Chifukwa chake, zofunikira zake ndizomwe zimafunikira kuti zonse zikhale ndi zida zabwino zamakina (ndiko kuti, kuphatikizika kwina kwamphamvu ndi kulimba) komanso kukhazikika kwapamwamba, komanso magawo ogwirira ntchito (njira yothamanga, m’mimba mwake) ayenera kukhala ndi kuuma kwakukulu, mphamvu yayikulu. ndi zokwanira The abrasion resistance.

Kuzimitsa ndondomeko ndondomeko ya mpira wononga ulusi:

Choyamba ikani workpiece mu inductor (koyilo), pamene mafupipafupi ena a alternating panopa akudutsa inductor, alternating maginito kwaiye kwaiye mozungulira. Kulowetsedwa kwa ma elekitirolemu kwa maginito osinthika kumatulutsa mphamvu yotsekeka yotsekeka muzogwirira ntchito ─ eddy current. Kugawa kwaposachedwa komwe kumapangidwira pamtanda wa workpiece kumakhala kosiyana kwambiri, ndipo kachulukidwe kameneka pamtunda wa workpiece ndi wapamwamba kwambiri ndipo pang’onopang’ono amachepetsa mkati. Chodabwitsa ichi amatchedwa khungu effect. Mphamvu yamagetsi yamagetsi apamwamba kwambiri pamtunda wa workpiece imasandulika kukhala mphamvu ya kutentha, kotero kuti kutentha kwa pamwamba kumawonjezeka, ndiko kuti, kutentha kwapamwamba kumatheka. Kukwera kwa ma frequency apano, kumapangitsa kusiyana kwakukulu pakati pa pamwamba ndi mkati mwa workpiece, ndi kuonda kwa kutentha kwa kutentha. Pambuyo kutentha kwa kutentha kosanjikiza kupitirira kutentha kwachitsulo kwachitsulo, kumakhazikika mofulumira kuti akwaniritse kuzimitsa ndi kutentha kwa kutentha.