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Quy trnh cng ngh gia cng cc chi tit dng bc 1. c im kt cu1. 2. 3. 4. 5. Loai bac trn khong co g Loai bac co g hoac mat bch Loai bac co lo hnh con Loai bac co ranh Loai bac co lot them lp hp kim chong mon Loai bac mong co xe ranh
6. Chc nng ca bc ?
Quy trnh cng ngh gia cng cc chi tit dng bc 2. Yu cu k thut1. m bo ng tm mt trong v ngoi 2. m bo vung gc ca mt u vi tm l
Ch chung
1. ng knh mat ngoai chnh xac 7 10. 2. ng knh lo at cap chnh xac 6,7,8 3. o day thanh bac cho phep sai lech 0, 03 0,15 mm. 4. o ong tam tuy thuoc ieu kien lam viec 5. o khong vuong goc gia mat au va ng tam lo nam trong khoang 0,1 0, 2mm/100mm ban knh.
Cp chnh xc
nhm
+ Vi be mat lo tuy theo yeu cau ma choRa=2, 5 0, 63m, oi khi Ra =0, 32m . + Vi be mat ngoai can at Ra=2, 5m . + Vi mat au :Rz=40 10m, Ra=2, 5 1, 25m .
Quy trnh cng ngh gia cng cc chi tit dng bc 3. Vt liu v phng php ch to phi1. 2. 3. 4. 5. 6. Thp Gang Hp kim ng Hp kim chng ma st Phi kim loi (cht do) Gm (ngm du bi trn tt) 1. 2. 3. 4. Phi thanh (c hoc c l) Phi cn nng Phi c p trong khun (cht do)
Vt liu:
Phng php ch to phi
Quy trnh cng ngh gia cng cc chi tit dng bc 3. Chun nh v1. m bo ng tm mt trong v ngoi
1. Mt tr ngoi 2. Mt tr ngoi v mt u
2. m bo vung gc ca mt u vi tm l
3. Mt tr trong v mt u
1. Quan trng nht l nh v vo mt trong ca bc,
2.
V SAO?
gia cng cc mt chnh ca bc ta c th thc hin qua 1, 2, 3, hoc 4 ln g
Quy trnh cng ngh gia cng cc chi tit dng bc 3. Chun nh v
1 ln g
2 ln g
3 ln g
Quy trnh cng ngh gia cng cc chi tit dng bc 4. Th t gia cng chung
1. 2. 3. 4. 5.
Gia cong cac mat chnh cua bac Khoan cac lo phu Gia cong cac ranh, cac mat nh hnh Nhiet luyen neu can Gia cong tinh cac mat trong va mat ngoai neu can thiet
6. Kiem tra.
Quy trnh cng ngh gia cng cc chi tit dng bc 5. Bin php thc hin cc nguyn cng 5.1 Gia cng cc mt chnhCh : Bin php gc bc ph thuc vo dng phi v sn lng gcsn lng t 1. Phi thanh 2. Phi ng sn lng nhiu My tin t ng rvnve: g nhiu dao, thc hin nhiu NC My tin vn nng: qua nhiu nguyn cng qua mt ln g
Quy trnh cng ngh gia cng cc chi tit dng bc 5. Bin php thc hin cc nguyn cng 5.1 Gia cng cc mt chnh Doatinh y phi chm c Doa th Khot
1. Phi thanh
My tin t ng rvnve: g nhiu dao, thc hin nhiu NCKhoan mi
Vt mp, 1.106 -S o gia cong ca mat chnh cua bac t phoi thanh tren may Rvonve. Hnh ct t
Khoan v tin ngoi
Quy trnh cng ngh gia cng cc chi tit dng bc 5. Bin php thc hin cc nguyn cng 5.1 Gia cng cc mt chnh
1. Phi c hoc rn tng chic
sn lng t sn lng nhiu
Chi tit ln: My tin ct Chi tit nh: My tin thng My nhiu trc, nhiu dao My tin t ng
Quy trnh cng ngh gia cng cc chi tit dng bc 5. Bin php thc hin cc nguyn cng 5.1 Gia cng cc mt chnh Cc ch :Nhng bac co lo con thng tien bang cacdao rong li, khoet, doa bang cac dao hnh con hoac gia cong bang cach tien chep hnh tren cac may tien thong thng.
Nhng bac co lot mot lp hp kim chong mon (bac 2 lp) th sau khi gia cong tinh lo,
tien hanh ep (hoac uc) lp hp kim tren mat lo roi phai gia cong tinh lai lp hp kim.
Trng hp bc mng, lc kp phi trnh lm bin dng bc
Quy trnh cng ngh gia cng cc chi tit dng bc 5. Bin php thc hin cc nguyn cng 5.2 Gia cng cc l ph Sn lng t: Mykhoan ng Chun nh v: -Mt u v mt ngoi -Mt u v mt trong Sn lng nhiu: My khoan u rvnve hay u khoan nhiu trc, u phn
Quy trnh cng ngh gia cng cc chi tit dng bc 5. Bin php thc hin cc nguyn cng 5.2 Gia cng cc l ph Mt s s gia cng
Chun nh v? S bc t do?
Hnh 1.111: o ga khoan, vat mep, doa lo 3 cua xilanh
Quy trnh cng ngh gia cng cc chi tit dng bc 5. Bin php thc hin cc nguyn cng 5.2 Gia cng cc l ph Mt s s gia cng
Chun nh v? S bc t do?
Quy trnh cng ngh gia cng cc chi tit dng bc 5. Bin php thc hin cc nguyn cng 5.3 Gia cng cc mt nh hnhRnh nh hnh: + Rnh then
+ Rnh du bi trn+ Rng
Quy trnh cng ngh gia cng cc chi tit dng bc 5. Bin php thc hin cc nguyn cng 5.4 Gia cng tinh sau nhit luynCc mt no cn gia cng tinh li sau nhit luyn? Phng php gia cng?
ch yu mt trong i khi mt ngoi Mi, mi khn, mi nghin, tin bng dao hp kim cng ty trng hp
Quy trnh cng ngh gia cng cc chi tit dng bc 5. Kim tra bc1. ng tm mt trong v ngoi
2. vung gc ca mt u vi tm l
V d minh ha v lp quy trnh cng ngh gia cng Chi tit dng bc Sn lng gia cng: Lot vaPhi ban u
Bn v ch to
u tin cn quan st hnh dng hnh hc ca chi tit, cc b mt cn gia cng, dung sai kch thc v hnh dng, nhm b mt
Th t gia cng & S nguyn cng Nguyn cng 1:-Gia cng th mt ngoi -Vt mp
Nguyn cng 2:
- Gia mt u ln - Khot l -Mc rnh - Doa
Th t gia cng & S nguyn cng Nguyn cng 3: Nguyn cng 4:
-Tin mt u cn li - Tin tinh mt ngoi - Tin rnh
-Xc rnh then (c th chut nu c my)
Th t gia cng & S nguyn cng Nguyn cng 5: Nguyn cng 6:
Khi V di Khoan l du Mi v tm mt tr ngoi