I Umngxuma onzulu umbhobho odikayo lelona candelo lingundoqo le-BTA (Boring and Trepanning Association) iinkqubo zokomba umngxuma onzulu. Yenzelwe ukucwangciswa okuphezulu kwemingxuma enzulu kunye ne-deep-to-diameter ratio (D: d) ≥ 10: 1, isetyenziswa ngokubanzi kwi-aerospace, amandla, kunye noshishino lweemoto. Iyahambelana ne-Single Tube (STS) kunye ne-Double Tube (DTS / Ejector) iinkqubo, isebenzisa i-high-pressure coolant kunye noyilo oluqinileyo ukuqinisekisa ukukhutshwa okuzinzileyo kwe-chip.
Isikhundla esingundoqo kunye noMgaqo wokuSebenza
- Undoqo: Isakhiwo se-tubular esingenanto esisebenza nge-drill ekhethekileyo / iintloko ezidikayo ukuhambisa amandla okusika, ukuhambisa i-high-pressure coolant, kunye nokukhupha iitshiphusi.
- Umbhobho omnye (STS/BTA): I-Coolant ingena kwindawo yokusika nge-annulus phakathi kwe-tube OD kunye nodonga lomngxuma; Iitshiphusi zikhutshwa ngombhobho wangaphakathi. Ifuna ukutywinwa kwendawo yokusebenza kunye nentloko yoxinzelelo. Efanelekileyo kwi-diameter yomngxuma 12-850 mm kunye nobunzulu bomlinganiselo ≥ 100:1. Ukusebenza kakuhle ngamaxesha angama-3-5 kunokudubula kompu.
- Ityhubhu ephindiweyo (DTS/Ejector): Ukupholisa kuhamba kwi-annulus phakathi kwetyhubhu yangaphakathi nangaphandle; iitshiphusi ziyakhutshwa ngombhobho wangaphakathi. Akukho ntloko yoxinzelelo efunekayo, eyenza ikwazi ukulungelelanisa nezixhobo zomatshini eziqhelekileyo. Ubunzulu obukhulu obucetyiswayo yi-1000 mm (ukuya kwi-2000 mm kunye neeadaptha ezikhethekileyo), ezifanelekileyo kumngxuma we-18-250 mm.
Ulwakhiwo olungundoqo kunye nezixhobo
| Icandelo | Umsebenzi | Iimpawu eziqhelekileyo |
| Umzimba wombhobho | Uhambisa itorque, ukuhambisa okupholileyo, ukukhupha iitshiphusi | I-OD: 16–300 mm, Ukutyeba kweDonga: 3–20 mm, Ubude: 1–6 m |
| Ukuqhagamshela Umsonto | Iqhagamshela kwintloko ekruqulayo/isiphathi-sixhobo | I-single/Multi-start thread (umzekelo, 4ST/1ST), ukuchaneka kweClass 6g, iyahambelana nemigangatho ye-ISCAR/UNISIG |
| IiPads zesikhokelo | Iqinisekisa ukuthe tye kunye nokugqitywa komphezulu | Ukufakwa kwe-tungsten carbide, Ububanzi: 5-15 mm, Ukucoca ngomngxuma: 0.01-0.03 mm |
| Izinto eziphathekayo | Iqinisekisa ukuqina kunye nokumelana nokunxiba | I-Alloy Steel (4140/4340), iNitrided/Chrome-plated surface, Ukuqina: HRC 30–45 |
IiParameters zobuGcisa (Ireferensi Jikelele)
| Uluhlu lweParameter | Umbhobho omnye (STS) | Ityhubhu ephindiweyo (Ejector) | Amagqabantshintshi |
| I-Dimeter ye-Hole efanelekileyo | 12–850 mm | 18-250 mm | Uluhlu oluqhelekileyo lweshishini |
| Ubunzulu obucetyisiweyo | ≤ 200:1 | ≤ 100:1 | Lungisa ngokusekwe kubungqongqo bomatshini kunye nenkqubo yokupholisa |
| Uxinzelelo olupholileyo | 5–20 MPa | 3–10 MPa | Iqinisekisa ukunqunyanyiswa kwetshiphu ngexesha lokukhutshwa |
| Ireyithi yokuHamba okupholisayo | 50–800 L/min | 30–500 L/min | Ukwandisa ngedayimitha yomngxuma kunye nobunzulu |
| Umbhobho othe tye | ≤ 0.02 mm/m | ≤ 0.03 mm/m | Okubalulekileyo kwimingxuma eqondileyo kunye ne-cylindricity |
| Uburhabaxa boMphezulu | ID Ra ≤ 1.6 μm | Isazisi Ra ≤ 3.2 μm | Yehlisa umngcipheko wokuvala itshiphu |
| Ukuchaneka koQhagamshelwano | Ukukhutshwa komsonto ≤ 0.01 mm | Ngokufana naKhohlo | Uqinisekisa ukugxila kunye nokulinganisela okuguquguqukayo |
Iimeko zeSicelo kunye neSikhokelo soKhetho
- Izixhobo ezifanelekileyo: Intsimbi yeCarbon, intsimbi yealloyi, intsimbi engatyiwa, ingxubevange yetitanium, ingxubevange yobushushu obuphezulu. Isebenza ngakumbi kwizinto ezivelisa iitshiphusi ezinde, ezinentambo.
- Iinqobo zoKhetho:
- Ububanzi/Ubunzulu: Kwimingxuma <18 mm, beka phambili iThubhu enye. Kubunzulu> 1000 mm, beka phambili iThubhu enye + iNtloko yoxinzelelo.
- Uhlobo lomatshini: Sebenzisa iTube ephindwe kabini kumaziko omatshini asemgangathweni asemgangathweni; sebenzisa i-Single Tube koomatshini bomngxuma onzulu ozinikeleyo.
- Ukusebenza kakuhle: I-Single Tube inikeza ukusebenza okuphezulu; I-Double Tube inikeza ukuguquguquka okukhulu.
Izinto eziluncedo kunye namanqaku okusebenza
- Izinto eziluncedo ezingundoqo: Ubunzulu obuphezulu ukuya kububanzi bomlinganiselo, ukuchaneka okuphezulu kwe-machining (I-Hole Tolerance IT7-IT9, i-Surface Ra ≤ 1.6 μm), ukukhutshwa kwe-chip egudileyo, kunye nokuguquguquka kwezinto ezibanzi.
- Amanqaku okusebenza:
- Ukuchaneka kokucoca okupholileyo kufuneka kube ≤ 10 μm ukuthintela ukuvaleka.
- Kufuneka umngxuma wokulinga (Ububanzi = Boring Tube ID - 0.5 mm, Ubude ≥ 2x umngxuma ububanzi).
- Lawula iiparamitha zokusika: Isantya v = 30-100 m / min, Isondlo f = 0.1-0.3 mm / rev (lungisa ngokusekelwe kwizinto eziphathekayo).
Umzekelo weNkalo eziQhelekileyo (Umgangatho weUNISIG)
| Ububanzi bomngxuma ofanelekileyo (mm) | Ityhubhu edikayo OD (mm) | I-ID yetyhubhu edikayo (mm) | Ubude obucetyiswayo (m) |
| 20–30 | 19.05 | 15.00 | 1.5 |
| 31–40 | 28.58 | 22.00 | 2.0 |
| 41–50 | 38.10 | 30.00 | 3.0 |
| 51–65 | 50.80 | 42.00 | 4.0 |
