Analysis na hankula ainihin mashinan sassa: hannun riga sassa

1.What are hannun riga sassa?

An raba sassan hannun riga bisa ga halayen tsarin su: zobba daban-daban da hannayen riga waɗanda ke goyan bayan jikin jujjuyawar, rikodi da hannayen riga a kan kayan aiki, hannayen silinda akan injin konewa na ciki, silinda na hydraulic a cikin tsarin hydraulic, da electro-hydraulic servo. bawuloli.hannun riga, sanyaya hannun riga a cikin lantarki spindle, da dai sauransu.

2. Tsarin fasali na sassan hannun riga

Tsarin da girman sassan hannun riga sun bambanta da amfani daban-daban, amma tsarin gabaɗaya yana da halaye masu zuwa:
1) Diamita d na da'irar waje gabaɗaya ya fi tsayinsa L, yawanci L/d <5.
2) Bambanci tsakanin diamita na rami na ciki da da'irar waje kadan ne.
3) Abubuwan da ake buƙata na coaxial na ciki da na waje na juyawa suna da girma.
4) Tsarin yana da sauƙi mai sauƙi.

3. Babban buƙatun fasaha don sarrafa sassan hannun hannu

Babban saman sassa na hannun hannu suna taka rawa daban-daban a cikin injin, kuma buƙatun fasahar su sun bambanta.Babban buƙatun fasaha sune kamar haka:
(1) Bukatun fasaha don rami na ciki.Ramin ciki shine mafi mahimmancin saman sassa na hannun riga wanda ke taka rawar tallafi ko jagora.Yakan yi daidai da sandar motsi, kayan aiki ko fistan.Matsayin haƙurin diamita gabaɗaya IT7 ne, kuma madaidaicin hannun riga shine IT6;Ya kamata a sarrafa juriyar siffar gabaɗaya a cikin juriyar buɗewa, kuma ya kamata a sarrafa madaidaicin hannun riga a cikin 1/3 ~ 1/2 na haƙurin buɗewa, ko ma ƙarami;na dogon lokaci Baya ga buƙatun zagaye, hannun riga ya kamata kuma yana da buƙatun don cylindricity na rami.Don tabbatar da buƙatun amfani da sassa na hannun riga, ƙarancin saman rami na ciki shine Ra0.16 ~ 2.5pm.Wasu madaidaicin sassan hannun riga suna da buƙatu mafi girma, har zuwa Ra0.04um.
(2) Bukatun fasaha don da'irar waje: Wurin da'irar na waje yakan yi amfani da tsangwama mai dacewa ko daidaitawar canji don dacewa da ramukan da ke cikin akwatin ko firam ɗin jiki don taka rawar goyan baya.Its diamita size haƙuri matakin ne IT6 ~ IT7;Ya kamata a sarrafa haƙurin siffar a cikin haƙurin diamita na waje;Tsayin yanayi shine R0.63 ~ 5m.
(3) Matsayi daidaito tsakanin manyan saman
1) Coaxiality tsakanin da'irori na ciki da na waje.Idan an shigar da hannun riga a cikin rami a cikin injin kafin aiki na ƙarshe, to, buƙatun coaxial don da'irar ciki da waje na hannun riga sun kasance ƙasa;idan an kammala hannun riga kafin a shigar da shi cikin injin, buƙatun coaxial sun fi girma., da haƙuri ne kullum 0.005 ~ 0.02mm.
2) Perpendicularity tsakanin rami axis da karshen fuska.Idan hannun karshen fuska an hõre axial load a lokacin aiki, ko aka yi amfani da matsayin sakawa tunani da taro tunani, sa'an nan karshen fuska yana da wani babban perpendicularity zuwa rami axis ko axial madauwari runout bukatar wani haƙuri na kullum 0.005 ~ 0.02mm .

4. Fasahar sarrafawa na sassan hannun riga

Babban matakai don sarrafa sassan hannun riga sune mafi yawa roughing da kuma kammala rami na ciki da na waje, musamman ma roughing da ƙare ramin ciki shine mafi mahimmanci.Hanyoyin sarrafawa da aka fi amfani da su sun haɗa da hakowa, reaming, naushi, kaifi, niƙa, zane da niƙa.Daga cikin su, hakowa, reaming, da hakowa gabaɗaya ana amfani da su azaman ƙeƙasasshiyar mashin ɗin da ƙare ramuka kaɗan, yayin da ake amfani da hakowa, niƙa, zane, da niƙa azaman gamawa.

5. Zaɓin kayan abu don kayan aikin hannu

Zaɓin kayan albarkatu don sassan hannun riga ya dogara ne akan buƙatun aiki, halaye na tsari da yanayin aiki na sassan.Saitin sassa gabaɗaya ana yin su ne da kayan kamar ƙarfe, simintin ƙarfe, tagulla ko tagulla, da ƙarfe na foda.Wasu sassan hannun riga tare da buƙatu na musamman na iya ɗaukar tsarin ƙarfe mai Layer biyu ko amfani da ƙarfe mai inganci.Tsarin ƙarfe mai Layer biyu yana amfani da hanyar simintin simintin centrifugal don zuba wani Layer na Babbitt gami da sauran kayan gami masu ɗauke da gawa akan bangon ciki na ƙarfe ko jefar ƙarfe.Amfani da wannan Ko da yake wannan hanyar kera yana ƙara wasu sa'o'i na mutum, yana iya adana karafa maras ƙarfe da inganta rayuwar sabis na ɗaukar nauyi.