Indlela yokukhetha itephu yomatshini

1. Khetha ngokwendawo yokunyamezela impompo
Iimpompo zomatshini wasekhaya ziphawulwe ngekhowudi yendawo yokunyamezela kwi-pitch diameter: H1, H2, kunye ne-H3 ngokulandelanayo ibonisa izikhundla ezahlukeneyo zommandla wokunyamezela, kodwa ixabiso lokunyamezela lifana. Ikhowudi yendawo yokunyamezela yeempompo zezandla yi-H4, ixabiso lokunyamezela, i-pitch kunye ne-angle iphutha likhulu kuneempompo zomatshini, kunye nezinto eziphathekayo, unyango olushushu kunye nenkqubo yokuvelisa ayilungile njengeempompo zomatshini.

I-H4 ayinakuphawulwa njengoko ifunwa. Amabakala ommandla wokunyamezela intambo angaphakathi anokucutshungulwa yi-tap pitch tolerance zone ami ngolu hlobo lulandelayo: Ikhowudi yendawo yokunyamezela impompo isetyenziswa kwi-internal thread tolerance zone amabakala H1 4H, 5H; H2 5G, 6H; H3 6G, 7H, 7G; H4 6H, 7H Ezinye iinkampani zisebenzisa iitephu ezivela kumazwe angaphandle zihlala ziphawulwa ngabavelisi baseJamani njenge ISO1 4H; ISO2 6H; I-ISO3 6G (umgangatho we-ISO1-3 wamazwe ngamazwe ulingana nomgangatho wesizwe we-H1-3), ukwenzela ukuba ikhowudi yendawo yokunyamezela impompo kunye nendawo yokunyamezela intambo yangaphakathi enokuqhutyelwa phambili zombini iMakisiwe.

Ukukhetha umgangatho wentambo Kukho imigangatho emithathu eqhelekileyo kwimisonto eqhelekileyo: i-metric, i-imperial, kunye nobunye (ekwaziwa ngokuba yi-American). Inkqubo ye-metric yintambo ene-angle yeprofayili yezinyo yama-degrees angama-60 kwiimilimitha.

2. Khetha ngokohlobo lwempompo
Eyona nto sihlala siyisebenzisa zezi: iimpompo zefluti ezithe ngqo, impompo yefluti ejikelezayo, iitephu zespiral point, iimpompo ze-extrusion, nganye ineengenelo zayo.
Iimpompo zefleyiti ezithe ngqo zinowona buchule bunamandla, umngxuma ophumela ngaphandle okanye ukungaphumeleli, isinyithi esingeyoron okanye intsimbi evuzayo inokusetyenzwa, kwaye ixabiso lelona liphantsi. Nangona kunjalo, i-pertinence nayo ihlwempuzekile, yonke into inokwenziwa, akukho nto ingcono. I-cone yokusika inxalenye ingaba namazinyo ama-2, ama-4, kunye nama-6. Ikhowuni emfutshane isetyenziselwa imingxunya engaphumeleliyo, kwaye ikhowuni ende isetyenziselwa imingxunya. Ngethuba nje umngxuma ongezantsi unzulu ngokwaneleyo, i-cone yokusika kufuneka ibe yinde kangangoko kunokwenzeka, ukwenzela ukuba kukho amazinyo amaninzi abelana ngomthwalo wokusika kunye nobomi benkonzo bude.

Iimpompo ze-spiral flute zifaneleke ngakumbi ukusetyenzwa kwentambo engagqibi emngxunyeni, kwaye iitshiphusi zikhutshwa ngasemva ngexesha lokusetyenzwa. Ngenxa ye-angle ye-helix, i-angle yokusika i-rake ye-tap iya kwanda ngokunyuka kwe-angle ye-helix. Amava asixelela ukuba: Xa kusetyenzwa ngesinyithi, i-engile ye-helix kufuneka ibe ncinci, ijikeleze ngokubanzi i-30 degrees, ukuqinisekisa ukomelela kwamazinyo ajikelezayo. Ukucutshungulwa kweensimbi ezingenayo i-ferrous, i-angle ye-helix kufuneka ibe nkulu, enokuthi ibe malunga nama-degrees angama-45, kwaye ukusika kufuneka kube bukhali.

I-chip ikhutshelwa phambili xa umsonto usenziwa yimpompo yenqaku. Ubungakanani bayo obuphambili boyilo bukhulu kakhulu, amandla angcono, kwaye inokumelana namandla amakhulu okusika. Isiphumo sokusetyenzwa kweentsimbi ezingezizo i-ferrous, intsimbi estainless, kunye nentsimbi yeferrous zilungile kakhulu, kwaye iimpompo ze-screw point kufuneka zisetyenziswe ngokukhethekileyo kwimisonto ephuma emngxunyeni.

Iimpompo ze-Extrusion zifaneleke ngakumbi ukusetyenzwa kweentsimbi ezingenayo i-ferrous. Ihluke kumgaqo wokusebenza weempompo zokusika ezingentla, ikhupha isinyithi ukwenza i-deform kwaye yenze imicu yangaphakathi. Ifayibha yentsimbi yangaphakathi eyongeziweyo iyaqhubeka, inamandla aphezulu kunye nokucheba, kunye noburhabaxa obuhle bomphezulu. Nangona kunjalo, iimfuno zomngxuma ongezantsi wempompo ye-extrusion ziphezulu: zikhulu kakhulu, kwaye inani lesiseko sesinyithi lincinci, okubangelwa ngaphakathi Ububanzi bomsonto bukhulu kakhulu kwaye amandla awanele. Ukuba incinci kakhulu, intsimbi evaliweyo kunye ne-extruded ayinayo indawo eya kuyo, ibangela ukuba impompo iphuke.