Induction e utloahalang le tsebo e nkiloeng ea litekanyetso tsa khoele

U tseba hakae ka likhoele tse entsoeng ka mochini?

Sebakeng sa machining, "likhoele" ka tloaelo li bolela lithapo tsa helical le liphula tse holim'a karolo ea cylindrical, e nolofalletsang ho hokahana le karolo e 'ngoe kapa ho sebelisoa ho fetisa motsamao kapa matla. Litlhaloso le litekanyetso tsa likhoele tse entsoeng ka mochini hangata li tobane le indasteri le ts'ebeliso eo ho buuoang ka eona.Naheng ea United States, likhoele tse entsoeng ka mochini hangata li hlalosoa ke maemo a behiloeng ke mekhatlo e kang American National Standards Institute (ANSI) le American Society of Mechanical Engineers. (ASME). Litekanyetso tsena li hlakisa li-profiles tsa likhoele, molumo, litlelase tsa mamello, le liparamente tse ling bakeng sa mefuta e fapaneng ea likhoele.

E 'ngoe ea litekanyetso tse tsebahalang haholo tsa likhoele tse entsoeng ka mochini ke Unified Thread Standard (UTS), e sebelisoang bakeng sa likhoele tse thehiloeng ho lisenthimithara. UTS e hlalosa mefuta e fapaneng ea likhoele, joalo ka Unified Coarse (UNC) le Unified Fine (UNF), 'me e fana ka lintlha tse qaqileng bakeng sa boholo ba likhoele, mamello, le mabitso.Bakeng sa likhoele tsa metric, standard ea ISO metric screw thread (ISO 68-1) e sebedisoang haholo. Tekanyetso ena e akaretsa liprofaele tsa metric, bophahamo ba khoele, litlelase tsa ho mamellana, le lintlha tse ling tse amanang le tsona. Ho bohlokoa ho bua ka litekanyetso tse ikhethileng le lintlha tse amanang le indasteri le ts'ebeliso eo u sebetsang le eona ho netefatsa moralo o nepahetseng le tlhahiso ea likhoele tse entsoeng ka mochini.

Letsatsi le leng le le leng, litsebi tse sebetsanang le mechini li kopana le likarolo tse kentsoeng. Ho sa tsotellehe litlhaloso tsa bona-ebang ke metric kapa ea borena, e otlolohileng kapa e tapered, e tiisitsoeng kapa e sa tiisitsoeng, e ka hare kapa e ka ntle, e nang le boemo ba 55-degree kapa 60-degree-likarolo tsena hangata li senyeha 'me li etsoa hore li se ke tsa sebelisoa ha nako e ntse e ea. Ho bohlokoa ho li hlahloba ka botlalo ho tloha qalong ho fihlela qetellong. Kajeno, sehlopha sa Anebon se tla bokella kakaretso ka tšepo ea hore e tla tsoela bohle molemo.

1. Matšoao a tloaelehileng

NPTke khoele ea liphaephe tse tapered tse sebelisoang ka kakaretso tsa Amerika tse nang le angle ea profil ea 60°.

PTkhoele ke khoele e tapered ea borena e nang le khoele ea khoele ea 55 °, e sebelisoang hangata bakeng sa ho tiisa. Likhoele tsa lipeipi tsa Brithani li na le likhoele tse ntle. Ka lebaka la botebo bo boholo ba khoele ea likhoele tse mahoashe, e fokotsa haholo matla a phala e ka ntle ea bophara e sehiloeng.

PFkhoele ke khoele e bapileng ea liphaephe.

Gke khoele e tiisang ea likhato tse 55, e leng ea lelapa la khoele ea Whitworth. Letšoao la G le emela khoele ea cylindrical, 'me G e le lentsoe le akaretsang bakeng sa khoele ea pipe (Guan), 'me phapang pakeng tsa likhato tse 55 le 60 e sebetsa.

ZGhangata e tsejoa e le khoune ea phala, e bolelang hore khoele e sebetsoa ho tloha sebakeng sa conical. Likarolo tse akaretsang tsa lipeipi tsa metsi li entsoe ka mokhoa ona. Tekanyetso ea khale ea naha e tšoailoe Rc.Pitch e sebelisoa ho hlahisa likhoele tsa metric, ha palo ea likhoele ka inch e sebelisoa bakeng sa likhoele tsa Amerika le Borithane. Ena ke khetho ea bona ea mantlha. Likhoele tsa metric li na le profil ea 60-degree equilateral, likhoele tsa Borithane li na le profil ea isosceles ea 55-degree, 'me likhoele tsa Amerika li na le profil ea 60-degree.

Metric threadssebelisa li-unit tsa metric, ha likhoele tsa Amerika le Borithane li sebelisa li-unit tsa borena.

Likhoele tsa liphaepheli sebelisoa haholo-holo bakeng sa ho hokahanya liphaephe. Likhoele tse ka hare le tsa ka ntle li tšoana hantle, 'me ho na le mefuta e' meli: liphaephe tse otlolohileng le liphaephe tse tapered. Bophara ba lebitso bo bolela bophara ba phala e kopantsoeng. Ho hlakile hore bophara bo boholo ba khoele bo boholo ho feta bophara ba lebitso.

Sebaka sa kopo se akaretsalikarolo tse entsoeng ka mochine oa cnc, cnc ho fetola likarolo lelikarolo tsa ho sila tsa cnc.

1/4, 1/2, le 1/8 li emela bophara ba mabitso a likhoele tsa lisenthimithara.

2. Litekanyetso tse fapaneng tsa naha

1. Khoele ea tsamaiso ea inch e kopaneng

Mofuta ona oa khoele o sebelisoa hangata linaheng tse sebelisang sistimi ea inch mme e arotsoe ka lihlopha tse tharo: li-coarse thread series UNC, fine thread series UNF, extra fine thread series UNFF, le fixed pitch series UN.
Mokhoa oa ho tšoaea:Bophara ba khoele—palo ea likhoele ka lisenthimithara tsa letoto la khouto—kereiti ea ho nepahala.

Ka mohlala:Letoto la likhoele tse mahoashe 3/8—16UNC—2A; Fine thread series 3/8—24UNF—2A; Letoto la likhoele tse ntle tse eketsehileng 3/8—32UNFF—2A;

Fixed pitch series 3/8—20UN—2A. Nomoro ea pele 3/8 e bolela bophara ba ka ntle ba khoele ka lisenthimithara. Ho fetolela ho metric unit mm, ikatisa ka 25.4, e lekanang le 9.525mm; linomoro tsa bobeli le tsa boraro 16, 24, 32, le 20 li emela palo ea meno ka inch (palo ea meno ka bolelele ba 25.4mm); Likhoutu tsa mongolo ka mor'a nomoro ea boraro, UNC, UNF, UNFF, UN, ke likhoutu tsa letoto, 'me linomoro tse peli tsa ho qetela, 2A, li bonts'a boemo ba ho nepahala.

Phetoho ea khoele ea 2.55° cylindrical pipe
Khoele ea 55 ° cylindrical pipe e simolohile ho tsoa letotong la inch empa e sebelisoa haholo linaheng tsa metric le inch. E hiriloe bakeng sa ho hokahanya liphaephe, ho tsamaisa maro le likhase, le ho kenya likhoele. Leha ho le joalo, linaha tse fapaneng li na le likhoutu tse fapaneng, ka hona hoa hlokahala ho fetolela likhoutu tsa kantle ho likhoutu tsa Sechaena ho sebelisa tafole (tafole ea papiso) e fanoeng. Likhoutu tsa likhoele tsa 55 ° cylindrical pipe tsa linaha tse fapaneng joale li hlahisoa tafoleng e ka tlase.

Phetoho ea khoele ea phala e tapered ea 3.55°
55° khoele ea peipi e taped e bolela hore angle profile ea khoele ke 55° le khoele e na le 1:16. Letoto lena la likhoele le sebelisoa haholo lefatšeng, 'me mabitso a likhoutu a fapana ho ea ka linaha.

4.Phetoho ea khoele ea phala e tapered ea 60 °

Khoele ea 60 ° ea peipi e tepeletseng e bua ka khoele ea phala e nang le angle ea profil ea 60 ° le khoele ea 1:16. Letoto lena la likhoele li sebelisoa indastering ea lisebelisoa tsa mochini naheng ea heso le United States le eo pele e neng e le Soviet Union. Lebitso la eona la khoutu, China e ne e tloaetse ho e hlalosa joalo ka K, hamorao ea e hlalosa e le Z, 'me joale e fetotsoe ho NPT. Sheba lenane la papiso ea khoutu ea khoele ka tlase.

5.55 ° Phetoho ea Khoele ea Trapezoidal
Khoele ea trapezoidal e bua ka khoele ea metric trapezoidal e nang le angle ea profil ea 30 °. Letoto lena la likhoele li batla li tšoana lapeng le kantle ho naha, 'me likhoutu tsa tsona le tsona lia lumellana. Likhoutu tsa khoele li bontšitsoe tafoleng e ka tlase.

3. Karolelano ea likhoele

Ho ea ka lisebelisoa tse fapaneng tsa likhoele, li ka aroloa ka:

1. International Metric Thread System

Khoele e amohetsoeng ke maemo a naha ea heso a CNS. Bokaholimo ba leino bo bataletse 'me ho bonolo ho reteleha, ha bokatlase ba leino bo na le sebopeho sa arc ho eketsa matla a khoele. Khoele ea khoele ke likhato tse 60, 'me tlhaloso e hlahisoa ka likhoele tsa M. Metric e ka aroloa ka mefuta e' meli: khoele e mahoashe le khoele e ntle. Boemeli bo joalo ka M8x1.25. (M: khoutu, 8: bophara ba lebitso, 1.25: sekontiri se metsi).

2. American Standard Thread

Bokaholimo le motso oa khoele ka bobeli li bataletse ebile li na le matla a betere. Khoele ea khoele e boetse e na le likhato tse 60, 'me litlhaloso li hlahisoa ka likhoele ka inch. Mofuta ona oa khoele o ka aroloa ka mekhahlelo e meraro: khoele e mahoashe (NC); khoele e ntle (NF); khoele e eketsehileng e ntle (NEF). Boemeli bo joalo ka 1/2-10NC. (1/2: bophara ba ka ntle; 10: palo ea meno ka inch; NC khoutu).

3. Khoele e tloaelehileng e kopaneng (UnifiedThread)

E entsoe ka kopanelo ke United States, United Kingdom, le Canada, ke khoele e sebelisoang hangata ea Borithane.
Khoele ea khoele e boetse e na le likhato tse 60, 'me litlhaloso li hlahisoa ka likhoele ka inch. Mofuta ona oa khoele o ka aroloa ka khoele e mahoashe (UNC); khoele e ntle (UNF); khoele e ntle e eketsehileng (UNEF). Boemeli bo joalo ka 1/2-10UNC. (1/2: bophara ba kantle; 10: palo ea meno ka inch; khoutu ea UNC).

Khoele e bopehileng joaloka 4.V (Sharp VThread)

Bokaholimo le metso ka bobeli li supa, li fokola ka matla, 'me ha li sebelisoe hangata. Khoele ea khoele ke likhato tse 60.

5. Whitworth Thread

Mofuta ona oa likhoele o hlalositsoe ke British National Standards. E na le khoele ea khoele ea likhato tse 55 'me e tšoantšetsoa ke "W". Haholo-holo e etselitsoe bakeng sa mekhoa ea ho etsa lihlahisoa, hangata e emeloa e le W1 / 2-10 (1/2: bophara ba ka ntle; 10: palo ea meno ka inch; W khoutu).

6. Khoele e Round (KnuckleThread)
Mofuta ona oa khoele o tloaelehileng, o thehiloeng ke DIN ea Jeremane, o loketse haholo bakeng sa ho hokahanya mabone a lebone le li-tubes tsa rabara. E tšoauoa ka letšoao "Rd".

7. Pipe Thread (PipeThread)
E etselitsoe ho thibela ho lutla, likhoele tsena hangata li sebelisetsoa ho hokahanya liphaephe tsa khase kapa tsa metsi. Ka khoele ea khoele ea likhato tse 55, li ka aroloa hape ka likhoele tse otlolohileng tsa liphaephe, tse tsejoang e le "PS, NPS", le likhoele tsa liphaephe tse tapered, tse tsejoang e le "NPT". Taper ke 1:16, e lekanang le 3/4 inch ka leoto.

8. Khoele e Sekwere
E na le ts'ebetso e phahameng ea phetisetso, ea bobeli feela ho khoele ea bolo, mofuta ona oa khoele hangata o sebelisoa bakeng sa li-vise screws le likhoele tsa crane. Leha ho le joalo, moeli oa eona o teng ka ho se khone ho lokisoa ka linate ka mor'a ho apara.

9. Khoele ea Trapezoidal
E boetse e bitsoa khoele ea Acme, mofuta ona o fana ka katleho e fokolang ea phetisetso ho feta khoele ea sekwere. Leha ho le joalo, e na le molemo oa ho feto-fetoha le linate ka mor'a ho apara. Sisteme ea metric, angle ea khoele ke likhato tse 30, athe tsamaisong ea borena ke likhato tse 29. Ka tloaelo e sebelisoa bakeng sa li-screws tse etellang pele tsa lathes, e emeloa ke letšoao "Tr".

10.Khoele ea Zigzag (ButtressThread)

E boetse e bitsoa khoele ea rhombic, e loketse feela phetiso ea tsela e le 'ngoe. Joalo ka li-screw jacks, li-pressurizer, joalo-joalo Letšoao ke "Bu".

11. Khoele ea bolo

Ke khoele e nang le bokhoni bo botle ba phetisetso. Ho thata ho e etsa ebile e bitsa chelete e ngata haholo. E sebelisoa ka mechine e nepahetseng. Tse kang screw lead ea lisebelisoa tsa mochini oa CNC lelikarolo tse entsoeng ka mochini oa mohlala.

Setšoantšo sa liboutu tsa inch
LH 2N 5/8 × 3 – 13UNC-2A
(1) LH ke khoele e letšehali (RH ke khoele e nepahetseng 'me e ka siuoa).
(2) 2N khoele e habeli.
(3) khoele ea 5/8 inch, bophara ba ka ntle ke 5/8”.
(4) 3 bolt bolelele 3”.
(5) likhoele tse 13 li na le likhoele tse 13 ka inch.
(6) UNC e kopanetsoe khoele e mahoashe.
(7) Boemo ba 2 bo lekanang, khoele ea ka ntle (3: e lekanang hantle; 2: e lekanang bohareng; 1: e hlephileng) A: Khoele ea ka ntle (e ka siuoa), B: Khoele e ka hare.

Khoele ea borena
Boholo ba likhoele tsa moemphera hangata bo hlalosoa ka palo ea likhoele ka bolelele ba lisenthimithara tse holim'a khoele, e bitsoang "palo ea likhoele ka inch", e lekanang hantle le ho lumellana ha khoele. Ka mohlala, khoele e nang le likhoele tse 8 ka inch e na le sekontiri sa 1/8 inch.

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