Thuc hanh tien

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<ul><li> 1. 1 BI 1: KHI NIM C BN V NGH TIN 1. V tr , c im ca ngh tin: - V tr: Tin l phng php gia cng ct gt thng dng nht,chim t trng ln trong gia cng kim loi bng ct (khong 25-50 0/0) v ngoi nguyn cng tin trn my tin cn c th khoan, khot, doa, tar - c im: Tin l phng php gia cng c phoi c thc hin bng s phi hp hai chuyn ng gi l chuyn ng to hnh gm chuyn ng chnh l chuyn ng quay trn ca chi tit v chuyn ng chy dao (chuyn ng chy dao dc v chuyn ng chy dao ngang) 2. Nhng cng vic tin c bn: 13. Tin chp hnh Hnh.1.1. Chuyn ng ct gt 3.Tin rnh ngoi 6.Tin ren trong5.Tin nhiu dao Tin nh hnh7.Tin rnh trong 8. 4.Tin ct t1.Tin tr ngoi 2.Tin tr trong 9.Tin cn ngoi 10.Tin cn trong 12.Tin ren ngoi11.Tin mt u Hnh.1.2. Nhng cng vic tin c bn. </li></ul><p> 2. 2 3. Gii thiu cc loi my tin: 3.1. My tin vn nng: - Dng gia cng : mt tr ngoi, mt tr trong, cn trong , cn ngoi, ren vt trong , ren vt ngoi, tin chp hnh - My Tin ren vt vn nng c nhiu c: c trung v c nh, c bn v c nng. 3.2. My tin ct: - Dng gia cng chi tit c ng knh ln : puli, v lng, bnh rng, tm m.v.v - Khng c ng - Mm cp c ng knh rt ln. - S cp tc t, s vng quay thp. 3.3. My tin ng: - Gia cng chi tit c ng knh ln 300 mm - Nng, hnh dng phc tp - Bn g chi tit nm ngang quay theo trc thng ng 3.4. My tin t ng: Hnh.1.3.My tin vn nng Digital Hnh.1.4. My tin ren vt vn Hnh.1.5. My tin ct Hnh.1.6. My tin ng. Hnh.1.7. My tin CNC - Dng gia cng hng lot v hng khi. - My tin t ng khng ch thc hin t ng ton b chu trnh chuyn ng ca dng c ct to ra sn phm hon chnh, m cn t ng thc hn vic kp cht v tho chi tit gia cng 3. 3 4. Cu to my tin ren vt vn nng: My tin ren vt vn nng c dng thc hi cc cng vic tin v ct ren khc nhau trong iu kin sn xut n chc v hng lot nh. Hnh dng ca my tin ren vt vn nng c gii thiu trn (Hnh.1.8) 4.1. Thn my: L chi tit quan trng v trn thn my c lp tt c cc b phn ch yu ca my. B phn quan trng nht l sng trt Trn sng trt c lp cc b phn my c th di ng: dng, gi , bn trt dc. Kt cu a dng 1.4.2. Hp trc chnh ( trc). Hp trc chnh thng bao gm c hp tc iu chnh tt c cc cp vn tc ca trc chnh.(Hnh.1.11) B phn quan trng nht ca hp trc chnh l trc chnh v nhng trc ca trc chnh. Trc chnh thng c kt cu rng c th a phi thanh qua trc chnh. Hnh.1.8. Cu to my tin ren vt vn nng Hnh.1.9. Hnh dng thn my Hnh.1.10. Hnh dng sng trt Hnh.1.11. Kt cu hp trc chnh Hnh.1.12. Kt cu trc chnh 4. 4 4.2. Bn xe dao: L b phn my lp trn hp xe dao v trt trn sng trt ca bng my . Bn dao c nhim v kp cht dao v thc hin chuyn ng chy dao dc v chy dao ngang. Bn dao gm 4 b phn chnh: bn trt dc, bn trt ngang, bn trt dc trn v g dao . 4.3. ng ( sau): c t trn sng trt dn hng ca bng my v c th di trt dc theo sng trt ti mt v tr bt k bng tay (Hnh.1.14) dng nhng chi tit gia cng km cng vng, ngoi ra cn g mi khoan, khot, doa, cc g tar, kp cht ng xung bng my c hai cch: bulng ai c v cn xoay cht lch tm. 5. Cc loi g thng dng trn my tin: 5.1. Mm cp: Dng nh v v kp cht cc chi tit c hnh dng khc nhau ch yu dng tr trn v i xng, c lp u trc chnh (Hnh.1.15) v (Hnh ( (Hnh.1.16). C 2 loi chnh : Mm cp khng t nh tm v mm cp t nh tm . Hnh.1.13. Kt cu h bn xe dao Hnh.1.14. Kt cu ng ( sau) Hnh.1.15. Mm cp 4 chu khng t nh tm Hnh.1.16. Mm cp 3 chu t nh tm 5. 5 5.2. Mi chng tm: Mi chng tm dng g cc chi tit dng trc di trong qu trnh gia cng (Hnh1.17) v (Hnh.1.18). 5.3. Gi : Dng nhng chi tit gia cng km cng vng thng c t s chiu di v ng knh ln hn hoc bng 12, v nhng chi tit c bit nng. C hai loi (Hnh.1.19): Gi c nh: bt cht xung bng my. Gi di ng: bt cht trn bn xe dao dc. 6. K thut an ton lao ng: 6.1. An ton lao ng trong ngh tin: a. Trc khi vo ca: Tc phong: Phi mt qun o bo h lao ng cho gn gng (Hnh.1.20). C tay o phi ci li hoc xon ln qua khi khuu tay. B o vo qun, tc cun gn cho vo m. i giy bata hoc dp c quai hu. Hnh.1.17. Mi chng tm c nh.Hnh.1.18. Mi chng tm quay. Hnh.1.19. Gi c nh v gi di ng Hnh.1.20. Qun o bo h lao ng. 6. 6 Kim tra my: Kim tra cng tc ng m my Cc b phn iu khin,phanh hm Cho my chy ch khng ti Khng tho cc b phn che an ton. Nu my c h hng phi bo ngay cho gio vin ph trch x l kp thi trc khi chy my. V tr lm vic. Thu dn nhng vt tha trn my v xung quanh v tr lm vic . Kim tra v chun b cc th cn thit nh: bn v c trn g cha, dng c g, dng c ct, dng c o chi tit g kp Bi trn sng trt v nng ng. Ni lm vic phi sch s, khng nn nh c du m, rc bn, c phoi. Mi dao. Khng d h gia b t v qu ln. Khi mi dao khng nn mi mt hng ca . Khng c mnh dao vo . Cn dao khng cha thng v p st vo lng bn tay. Phi dng knh hoc mica che trc khi mi cc ht mi khng bn vo mt. b. Trong khi lm vic: Dng c. Phi xp ring mt v tr, khng vt nng ln thc kp, ng h so, panme. Khi dng mi tm c nh phi cho m vo l tm ca phi, kim tra s tip xc gia mi tm vi phn cn ca l tm. G kp. Chi tit ngn kp trc tip vo mm cp. 7. 7 Nu chi tit di phi dng mi tm sau . Khng cha kho trn mm cp khi kp cht hoc tho phi xong. Khng nn dng ng tip ni di thm vo tay quay sit mm cp sit mm. Phi dng cha kho c u va vi l vung trn mm. Khi lm vic. Dng knh bo him che vng ct gt hoc eo knh, Dng c cu b phoi trn dao hoc dng mc ly phoi ra b mt chi tit m khng dng tay, Khng dng tay hm mm cp v chi tit gia cng Khng o kim khi my ang chy. Sau khi lm vic. Dng my, iu chnh cc tay gt ca my v v tr an ton,ngt in khi my. Dng chi v c qut sch phoi trn dao v bng my,dng gi sch lau sch cc dng c o, dng c ct v vo t dng c theo ng v tr qui nh, sp xp gn gng cc chi tit gia cng. Bi trn cc b mt lm vic trn bn dao v bng my, bn giao my v nu r tnh trng lm vic ca my cho gio vin ph trch. 6.2. Sp xp t chc ni lm vic: Cc loi dng c o,cc loi calip phi c t trn tm n trn np hp trc chnh hoc t dng c Cc dao tin, cha vn, cn m, ba, cha kho sit mm cp, mi tm t trn khay g t trn bng my sau ng. V tr lm vic sch s trnh tai nn cho ngi ng my. 6.3. V sinh cng nghip: Ni lm vic phi nh sng, m bo vn thng gi, si m, chng n, chng rung ng, an ton v ng dy in. Ni lm vic sch s v ngn np cng nh trong ton b nh xng. m bo v sinh phng chy. Phoi, rc c ni ring. 8. 8 BI 2: IU KHIN V IU CHNH MY TIN T6M16 1. iu khin my tin ren vt T6M16 Hnh 2.1 l s cu to ca my tin ren vt T6M16 do Nh my ch to my cng c s 1 H Ni Vit Nam sn xut, l mt loi my c s dng rng ri trong sn xut cng nh trong ging dy Thc hnh. 1.1. Mc ch: - T th lm vic bn my, cho chy v hm ng c in, cho chy v hm b truyn ng chnh ca my trc chnh quay thun chiu v ngc chiu, cho chy v hm truyn dn c kh ca xe dao theo hng ngang v hng dc. - G lp, kim tra theo ng knh, mt u v kp cht phi trn mm cp ba chu t nh tm. - G lp, iu chnh dao theo chiu cao mi chng tm ca my. - Di chuyn u con trt trn, bn xe dao ngang v bn xe dao dc, iu chnh gc ca con trt trn. - S dng cc bng iu chnh s vng quay, bc tin truyn dn c kh. - o chiu di ca phi v cc bc di trn phi hnh tr c bc bng thc l, o chiu di bc ngn v ng knh ca phi bng thc cp. - Xc nh mc tin dao ngang v dao dc, t ng chiu su ct cho trc theo mt s; ct th 4-5.mm 1.2. Trang b ni lm vic: My tin T6M6, mm cp ba chu t nh tm, cha vn mm cp, ba ng, gi ng h so, mi chng tm, dao tin ngoi, cn m c chiu dy khc nhau, cha xit bu lng g dao, thc l, thc cp 1/10 mm, phi thp 40, L120 2. Ni dung thc hin: Hnh 2.1. s cu to ca my tin ren vt T6M16 9. 9 2.1. Chun b thc hin bi tp : a. Kim tra s ph hp ca my vi vc dng ca ngi. La chn bc chn sao cho khi gp khu tay vung gc, bn tay khng thp hn ng tm ca my. (Hnh 2.2) b. Gi ng t th lm vic bn my : ng vng, hi dng chn trn bc, i din vi xe dao ca my, cch bc tin ngang mt khong 100 120mm. . Hnh 1.3 c. Ni ng c in ca my vo li in. Dng tay xoay cng tc A theo chiu kim ng h. (Hnh 2.4) Cng tc B dng m bm ti ngui, cng tc C dng m n chiu sng. 2. 2. Cho chy v hm trc chnh ca my : a. Cho trc chnh ca my quay thun chiu: Dng tay tri (khi s dng tay gt gn hp bc tin) hoc dng tay phi (khi s dng tay gt bn phi hp xe dao) ko tay gt 1 t v tr I (Hnh 2.5) ln pha trn ti v tr II . (Hnh 2.6). Hnh 2.2. Kim tra chiu cao my v ngi Hnh 2.4. Ni ng c in vi ngun in Hnh 2.5. Cho trc chnh quay thun Hnh.2.6. Cho trc chnh quay thun Hnh 2.3. Gi ng t th lm vic bn my 10. 10 b. Dng trc chnh ca my: Dng tay tri hoc tay phi y tay gt 1 t v tr II. (Hnh.2.7) xung di v tr I. c. Cho trc chnh ca my quay ngc chiu. Dng tay tri (khi s dng tay gt gn hp bc tin) hoc dng tay phi (khi s dng tay gt bn phi hp xe dao) ko tay gt 1 t v tr II (Hnh.2.8) xung pha di ti v tr III. 2.3. Cho chy v hm bc tin dc c kh ca xe dao: a. Cho chy bc tin thun chiu ca xe dao dc (t ng vo chnh). Dng tay ng tay gt b o chiu (Hnh 2.9) t v tr I sang v tr II ri ko tay gt 1 cho chy trc chnh ca my, dng tay ko tay gt ly hp chuyn ng dc hp xe dao t v tr I ln v tr II. (Hnh.2.10) b. Hm bc tin dc. ko tay gt ly hp chuyn ng dc t v tr II v li v tr I. c. Cho chy bc tin nghch chiu ca xe dao dc (t chnh ra ng). Dng tay ng tay gt ly hp b o chiu (hnh. 2.9) t v tr I sang v tr III ri ko tay gt 1 cho chy trc chnh ca my, dng tay ko tay gt ly hp chuyn ng dc hp xe dao t v tr I ln v tr II. (Hnh .2.10). 2.4. Cho chy v hm bc tin ngang c kh ca xe dao: a. Cho chy bc tin thun chiu ca xe dao ngang (tin vo ng tm ca my). Dng tay ng tay gt ly hp b o chiu (Hnh.2.9) t v tr I sang v tr II ri ko tay gt 1 cho chy trc chnh ca my, dng tay ko tay gt ly hp chuyn ng ngang hp xe dao t v tr I ln v tr II. (Hnh.2.10). Hnh. 2.7 Hnh. 2.8 Hinh. 2.9. ng ly hp b o chiu tin dao Hinh.2.10. ng ly hp tin dao 11. 11 b. Hm bc tin ngang. Ko tay gt ly hp chuyn ng ngang hp xe dao t v tr II v li v tr I. c. Cho chy bc tin nghch chiu ca xe dao ngang. Dng tay ng tay gt ly hp b o chiu (Hnh.2.9) t v tr I sang v tr III ri ko tay gt 1 cho chy trc chnh ca my, ko tay gt ly hp chuyn ng ngang hp xe dao t v tr I ln v tr II. 2.5. Di chuyn u con trt trn v bn xe dao bng tay: a. Di chuyn con trt trn v v tr cui bng mt tay (v pha ng). Tay phi cm tay quay 1 v quay theo chiu mi ten A dch chuyn con trt trn v pha ng (Hnh.2.11). b. Di chuyn con trt trn v v tr u ( trc) bng mt tay. Tay phi cm tay quay 1 v quay theo chiu mi tn B dch chuyn con trt trn v pha trc (Hnh.2.11). c. Di chuyn con trt trn v v tr u ( trc) bng hai tay: Dng ngn tay ci ca bn tay phi t vo cht 1 (Hnh.2.12) cn ngn tay tr nm ly cht Th hai, ng thi dng cc ngn tay ci v ngn tay tr ca bn tay tri nm ly tay quay v quay n theo chiu kim ng h. sau khi quay tay quay mt gc 120o (Hnh.2.13), tay tri tip tc quay thm mt gc 1800 , lc ny ngn tay ci ca bn tay phi t sang cht khc ca tay quay (Hnh.2.14). Nh vy con trt trn ca bn xe dao c dch chuyn v pha trc theo chiu mi tn A. Hnh.2.11. Di chuyn con trt trn v v tr cui ( ng) bng mt tay Hnh.2.12. Di chuyn con trt trn v v tr u ( trc) bng hait tay Hnh.2.13. Di chuyn con trt trn v v tr u bn tri bng hai tay Hnh.2.14. V tr ca hai tay khi dch con trt trn v v tr u 12. 12 d. Di chuyn bn xe dao ngang v pha ng tm trc chnh bng mt tay: Dng tay phi nm ly tay quay 1 (Hnh.2.15) v quay theo chiu kim ng h. e. Dch chuyn xe dao ngang v v tr ban u. Dng tay phi hoc tay tri quay tay quay 1 (Hnh.2.15) ngc chiu kim ng h. f. Di chuyn bn xe dao ngang v pha ng tm trc chnh bng hai tay.Dng hai tay cm tay quay (Hnh.2.16) v quay theo chiu khim ng h. dch chuyn xe dao v v tr ban u quya ngc li. g. Dch chuyn xe dao ngang v pha ng tm ca trc chnh v con trt trn v pha trc ng thi bng hai tay. t cc ngn tay ln cc tay quay nh (Hnh.2.17). Cc ngn tay ca bn tay phi quay tay quay ca con trt trn theo chiu kim ng h khong 1/3 1/2 vng. Cc ngn tay ca bn tay tri quay tay quay ca xe dao ngang theo chiu kim ng h khong 1/3 1/2 vng. h. Dch chuyn xe dao dc bng hai tay. dch chuyn xe dao dc v pha ( trc) dng hai tay cm vlng (Hnh.2.18) sao cho cc ngn tay tri t vo mt trong ca vlng, cn ngn tay tr t ln ng knh ngoi ca vlng v quay n ch n khi tay tri nm v tr di, cn tay phi nm v tr trn (Hnh.2.19) Hnh.2.15. Dch chuyn xe dao ngang bng mt tay Hnh.2.16. Dch chuyn xe dao ngang bng hai tay Hnh.2.17. Dch chuyn xe dao ngang v con trt trn Hnh.2.18. Thao tc u tin khi dch chuyn xe dao dc bng hai tay Hnh.2.19. Thao tc tip theo khi dch chuyn xe dao dc 13. 13 2.6. Xoay con trt trn i mt gc cho trc: a. Ni lng cu kp cht con trt trn vi xe dao ngang. Dng tay phi xoay cl 2 ngc chiu kim ng h ni lng cc cu 1 (Hnh2.20). b. Xoay con trt trn mt gc 300 ngc chiu hay cng chiu kim ng h. Dng hai tay (Hnh.2.21) xoay con trt trn cho n khi ng vch 1 trng vi vch th 30 vnh chia trn bn xe dao ngang , sau xit cht cc cu 1 (Hnh.2.20). c. Xoay con trt trn v v tr ban u. Dng hai tay Xoay phn trn cng Chiu kim ng h cho n khi ng vch 1 trng vi ch s 0 ca vnh chia trn bn xe dao ngang (Hnh.1.22) 2.7. iu chnh tc (s vng quay) ca trc chnh v bc tin dao: a. iu chnh hp tc theo s vng quay cho trc ca trc chnh trong mt pht. V d iu chnh s vng quay ca trc chnh l 500v/p, u tin gt tay gt ngn ti v tr 1, sau gt tay gt di ti v tr 2 (Hnh.2.23). ( Tuyt i khng c thay i s vng quay ca trc chnh khi my cha dng hn) Hnh.2.20. Ni lng cu kp cht con trt trn. 1. cu. 2. cl. Hnh.2.21. Xoay con trt trn i mt gc. 1. ng vch chia Hnh.2.22. Xoay con trt trn v v tr ban u. 1. vch chia . Hnh.2.23. iu chnh s vng quay trc chnh. 14. 14 b.iu chnh my theo bc tin cho ( Tin dao dc v tin dao ngang). Nhn theoA BNG TRA BC TIN DAO CA MY T6M16 iu chnh bc tin dc v ngang cho trc (hnh.2.24), v d l 0,06 mm/vng u tin gt tay gt ly hp b o chiu ty thuc vo hng tin dao phi hay tri t v I xung v tr II hoc v tr III, sau ty thuc vo cn tin ren hay tin trn m ko ra hoc ng ly hp vo chuyn tin ren v tin trn hp bc tin ( v tr I l tin ren, v tr II l tin trn), tip theo gt tay gt hp bc tin ti v tr s 1 v IV. Ko cn Hnh.2.24. iu chnh v tr tay gt tin ren v tin trn 15. 15 khi ng cho trc chnh quay v thc hin cc thao tc trnh by nh mc 2.3.3, 2.3.4. 2.8. G lp, kim tra theo ng knh, mt u v kp cht phi trn mm cp ba chu t nh tm: a. Tho rp cc chu kp. - Dng tay quay kha mm cp ngc chiu kim ng h ri rt cc chu kp ca mm cp ra khi cc rnh ca mm cp v t chng ln tm g. - G cc chu kp vo mm cp, xp cc chu kp ln tm g theo th t 1,2,3. (Hnh.2.25). t cha kha mm cp vo l ca mt trong ba bnh rng cn nh xoay bnh rng cn ln ( mt tri ca bnh rng cn ln c ng ren vung xon c), khi u mi ren xut hin rnh th nht ca mm cp, ta xoay bnh rng cn ny ngc tr li mt cht v t chu kp 1 (Hnh.2.25) vo rnh th nht, ri tip tc quay bnh rng cho ti khi chu kp n khp rnh xon c ca bnh rng cn ln. Tip tc thc hin lp cc chu 2,3 tng t nh lp chu 1 (Hnh.2.25). b. G t, r g o mt u v tho phi ra khi mm cp. iu chnh my c s vng quay nh nht ca trc chnh. Di chuyn bn xe dao v pha ng. G phi ln mm cp. Dng hai tay xoay kha mm cp ngc chiu kim ng h m rng chu kp ti mt lng ln hn ng knh phi cn kp (Hnh.2.26). Dng tay phi cm phi 1 (Hnh.2.27) vo cc chu kp ca mm cp, cn tay tri xoay kha mm cp theo chiu kim ng h cho n khi cc chu kp chm vo phi. Tip theo dng hai tay xoay kha mm cp theo chiu kim ng h kp cht s b phi. m bo phi g cng vng phn nh ra khi mm cp ca phi gp 1,5 2 ln ung khnh. Hnh.2.25. Lp chu vo mm Hnh.2.26. Chun b g phi ln Hnh.2.27. G phi trn mm cp Hnh.2.28. Thoa bt mu r g 16. 16 - R g v kp cht phi trn mm cp. Cho trc chnh quay, tay phi cm vin phn 3 ( Hnh.2.29) v t ln tay tri, cn tay tri t ln thn my, sau p vin phn vo mt u ca phi 1 cho ti khi to thnh vch phn 2 ri cho trc chnh ngng quay. Nu thy vch phn 2 khng to thnh ton b trn mt u th dng ba 3 (Hnh2.29) g vo phi 1 theo vch phn 2. Cc bc trn c lp li cho n khi c c vc...</p>