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Transcript of do an mai uon sat.doc

PHIU NH GI TI TT NGHIP

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LI NI U

Trong thi k hi nhp kinh t ng, Ty v ton cu ha, cng vi cng cuc i mi t nc, nc ta ang ra sc pht trin cc ngnh cng nghip mi nhn nh: Cng ngh ha cht, cng ngh luyn kim, c kh, may mc, hng tiu dng, v ang t c nhiu kt qu rt ng khch l, phn no nng cao i sng ca nhn dn, to cng n vic lm cho hng triu ngi lao ng.

Mt trong nhng ngnh pht trin mnh m , chnh l ngnh c kh ni chung v ngnh ch to my ni ring. T khi mi thnh lp n nay ngnh ch to my phn no to ra nhng sn phm c cht lng tt, nng sut cao v c xut khu ra nhiu th trng ln nh: EU, Chu , hay cc th trng khc nghit nh M,... Ngy nay khoa hc k thut ngy cng pht trin v vy m cc doanh nghip c kh i hi phi ci tin phng thc sn xut, thay th cc thit b lc hu, c k bng cc thit b cng ngh cao m bo cht lng, chnh xc gia cng cng nh thm m ca sn phm. Tuy nhin ci tin cng ngh th chi ph u t ban u cho vic mua sm cc thit b rt cao do cc my hin nay ch yu l nhp t nc ngoi nn li nhun thp v vy m nhiu doanh nghip khng u t hoc u t khng ni.

ng trc thc trng nn kinh t nc ta nh vy, ng v Nh nc ta coi trng hng u l vic pht trin ngnh c kh ch to, c bit l trong thi k Cng nghip ha, hin i ha t nc nh hin nay v to ra c nhiu my mc, thit b phc v cho s pht trin t nc a nc ta tr thnh mt nc pht trin trong tng lai khng xa. hiu thm v my mc thit b cng nh nm vng cc nguyn l thit k, chnh v vy m Nh trng, Khoa giao cho nhm thc hin ti: Thit k my un st Hin nay cc loi my ny c chnh xc v nng sut cao ch yu l nc ngoi. Mc ch ca vic nghin cu ti l thit k c my c cht lng, nng sut cao nhng gi thnh thp phc v trong nc v c th xut khu ra nc ngoi.

Trong ti ny ti xin cp n cc ni dung chnh sau:

Chng 1: Tng quan v my un st ph bin hin nay Chng 2: La chn phng n thit k Chng 3: Thit k k thut my Chng 4: Lp quy trnh cng ngh gia cng chi tit in hnh Chng 5: Quy Trnh vn hnh v ch bo dng.

Chng 6: Kt lun v xut kin

Tuy nhin do yu cu v thi gian hn hp, kin thc cn nhiu hn ch, vic tm ti liu v my un st l rt kh khn nn vic nghin cu ti chc chn cn nhiu thiu st. V vy rt mong c s ng gp kin ca thy, c cng cc bn ti c hon thin hn.

Qua ti ny em xin chn thnh cm n Thy LNG VN THNG, cng cc thy, c, cng cc bn gip trong thi gian va qua nhm em hon thnh tt ti ca mnh. DANH SCH CC HNHHnh 1.1: Thp c s dng trong xy dng 2

Hnh 1.2: Thp c s dng lm cu ng 2

Hnh 1.3: My un s dng ng c thy lc 3

Hnh 1.4: My un bn t ng 4

Hnh 1.5: My un in thy lc RAPID T10/M 5

Hnh 1.6: My un t ng CNC32B3 5

Hnh 1.7: My un su u trc 7

Hnh 1.8: My un do cng ty Khataco ch to 7

Hnh 2.1: C cu truyn lc bng tay 10

Hnh 2.2: C cu truyn lc bng c 11

Hnh 2.3: C cu truyn lc bng thy lc 12

Hnh 2.4: Nguyn l hot ng khun un 13

Hnh 2.5: C cu truyn lc bng kh nn 14

Hnh 3.1: Biu 16

Hnh 3.2: Biu P l 17

Hnh 3.3: Chuyn ng trn ca im 17

Hnh 3.4: Pht tho s b kt cu trc 35

Hnh 3.5: S tnh ton trc 35

Hnh 3.6: Biu mmen trc IV 37

Hnh 3.7: Cc kch thc c bn ca rnh then 38

Hnh 3.8: S chu lc ca tm 42

Hnh 3.9: Hp gim tc khai trin hai cp 43

Hnh 3.10: S pht tho hp gim tc khai trin hai cp 55

Hnh 3.11: S tnh ton trc I 56

Hnh 3.12: S tnh ton trc II 56

Hnh 3.13: S tnh ton trc III 56

Hnh 3.14: Biu mmen trc I 58

Hnh 3.15: Biu mmen trc II 60

Hnh 3.16: Biu mmen trc III 62

Hnh 3.17: S chu lc ca I 70

Hnh 3.18: Cu to chung ca ln 71

Hnh 3.19: S chu lc ca II 71

Hnh 3.20: S chu lc ca III 72

Hnh 4.1: Bn v ch to bnh rng 77

Hnh 4.2: Bn v nh s b mt chi tit gia cng 80

Hnh 4.3: Mm cp 3 chu t nh tm 83

Hnh 4.4: Dao tin ngoi thn cong 83

Hnh 4.5: Dao tin ngoi thn cong c gc nghing 900 84Hnh 4.6: Dao tin ngoi thn thng 85

Hnh 4.7: Dao bo rnh then thn cong 86

Hnh 4.8: Mi khoan rut g 88

Hnh 4.9: Mi ta r 89

Hnh 4.10: Dao phay a m un 90

Hnh 4.11: mi prfin thng 91

Hnh 4.12: mi rng 2 92

Hnh 4.13: Bn v phi 101Hnh 5.1: Phn mm Bentech EZ3D 113

Hnh 5.2: Phn mm Bentech Pro 114

DANH SCH CC BNG

Bng 3.1: Mt s cng thc xc nh chiu di khai trin phi un 21

Bng 3.2: Thng s ng hc v ng lc hc cc cp ca h truyn dn 29

Bng 3.3: Thng s k thut ca bi 202 c nh 70

Bng 3.4: Thng s k thut ca bi 204 c nh 72

Bng 3.5: Thng s k thut ca bi 207 c trung 73

Bng 3.6: c tnh k thut ca ni trc a 73

Bng 4.1: Bng c tnh ca thp C45 78

Bng 4.2: Cc phng n thit k 79

Bng 4.3: Thng s ca dao tin ngoi thn cong 82

Bng 4.4: Thng s ca dao tin ngoi thn cong c gc nghing 900 82

Bng 4.5: Thng s ca dao tin ngoi thn thng 83

Bng 4.6: Thng s ca dao bo rnh then 85

Bng 4.7: Thng s ca mi khoan rut g 86

Bng 4.8: Thng s ca mi ta r 86

Bng 4.9: Thng s c bn ca dao phay a m un 88

Bng 4.10: Thng s ca mi profin thng 89

Bng 4.11: Cc thng s ca mi 2 phng hai mt vt cn 90

Bng 4.12: Bng tnh lng d trung gian v kch thc trung gian 56 95

Bng 4.13: Bng tnh lng d trung gian v kch thc trung gian 246 96

Bng 4.14: Bng tnh lng d trung gian v kch thc trung gian L = 90 97

Bng 4.15: Bng tnh lng d trung gian v kch thc trung gian 100 98

Bng 4.16: Bng ch ct cho bc nguyn cng tin th 56 100

Bng 4.17: Bng ch ct cho bc nguyn cng tin bn tinh 56 101

Bng 4.18: Bng ch ct cho bc nguyn cng tin tinh 56 102

Bng 4.19: Bng ch ct cho bc nguyn cng mi th 56 103

Bng 4.20: Bng ch ct cho bc nguyn cng mi tinh 56 103

Bng 4.21: Bng ch ct cho bc nguyn cng tin th 246 104

Bng 4.22: Bng ch ct cho bc nguyn cng tin bn tinh 246 104

Bng 4.23: Bng ch ct cho bc nguyn cng tin tinh 246 105

Bng 4.24: Bng ch ct cho bc nguyn cng tin th L = 90 105

Bng 4.25: Bng ch ct cho bc nguyn cng tin bn tinh L = 90 105

Bng 4.26: Bng ch ct cho bc nguyn cng tin th 100 106

Bng 4.27: Bng ch ct cho bc nguyn cng tin tinh 100 106

Bng 4.28: Bng ch ct cho bc nguyn cng bo rnh then 107

Bng 4.29: Bng ch ct cho bc nguyn cng khoan 12 107

Bng 4.30: Bng ch ct cho bc nguyn cng ta r ren M12108

Bng 4.31: Bng ch ct cho bc nguyn cng phay th 108

Bng 4.32: Bng ch ct cho bc nguyn cng phay tinh 109

Bng 4.33: Bng ch ct cho bc nguyn cng mi th rng 109

Bng 4.34: Bng ch ct cho bc nguyn cng mi tinh rng 109

Chng 1:

TNG QUAN V MY UN ST PH BIN HIN NAY

1.1. t Vn - Ngy nay st, thp l mt thit b, dng c khng th thiu i vi con ngi, chng ta c th d dng tm thy chng khp mi ni, trn cc thit b ca t, xe my, tu thy, nh ca hay dng gia nh St, thp cn ng gp trong s tin ha ca loi ngi. C th ni tm quan trng ca st thp vi con ngi l rt ln. Vi nhu cu ca x hi hin nay, vic s dng thp c un thnh hnh tr nn ph bin,v d nh: trong ngnh xy dng (b ai,king,..) trong ngnh m ngh (lm lng chim,lng cha gia cm, an gh,khung..,)v mt s lnh vc khc. . V vy my un st thp ra i vi cc u im nh r tin, tit kim thi gian, sc lao ng,.kp thi p ng cc yu cu ca x hi.-

Mt s sn phm thp c dng trong xy dng dn dng, cu ng:

Hnh 1:1 Thp c s dng trong xy dng

Hnh 1.2: Thp c s dng lm cu ng1.2. Gii Thiu V My Un St - Hin nay trn th gii, st c s dng rng ri trong cc ngnh cng nghip v trong xy dng trang tr ni tht vi rt nhiu chng loi st khc nhau c ng knh cng nh vt liu rt a dng, nhn thy c tm quan trng ca st thp chnh v vy vic ch to my un ph hp vi nhu cu rt cn thit. Trn th gii hin nay my un st a dng t bng tay, n ng c ri n NC hay CNC c th un st vi nhiu bn knh khc nhau vi chnh xc v nng sut rt cao.

- My un st bn t ng NC dng un st c chnh xc cao, kch thc st tng i ln my c s dng ng c thy lc v vy to ra lc un tc dng ln st ng u t sinh ra khuyt tt trong khi un, iu kin my tng i n gin s dng bng bn p chn, my un c s dng u phn v vy st c xoay theo cc dng khc nhau un nhng st c nhiu on cong khc nhau.

Hnh 1.3: My un st s dng ng c thy lc

- My un st bn t ng s dng h thng thy lc, iu khin bng bn p chn hay nt iu khin cho php bn un cong n 1900, my s dng puli v c chn di gip cho st un khng b bin dng, t chnh xc cao. My c thit k thm b phn tay dn st pha sau gip cho phn khng un cong khng b bin dng. Tay un ca my c c chn linh hot gip cho vic iu chnh gc un d dng, my lm vic vi n nh cao, linh kin thay th n gin.

Hnh 1.4: My un st bn t ng

+ My un c cc cht thay i v vy c th thay i khun un mt cch d dng, my un c dng un st c kch thc ln v ch to khun un tng i n gin hn cc loi khun un kiu quay. Hnh 1.5: My un st in thy lc RAPID T10/M

- My un st CNC 32B8 c lp trnh trn phn mm Bendtech EZ3D y l phn mm m phng 3D chnh xc im un v gc un, thao tc v lp trnh thng qua mn hnh cm ng. Sn phm un chnh xc, b mt khng c nt nhn, c th un mt st gc un khng gii hn tit kim c thi gian tho lp. My c th nh trn 1000 chng trnh sn xut khc nhau v c kh nng pht hin li khi lp trnh khi hot ng.

Hnh 1.6: My un st t ng CNC32B3

- Hin nay nc ta cng c mt s cng ty cng sn xut my un st nh xng c kh Lm Qun Tp HCM sn xut my un st 6 u trc, c dng un st thp, Inox dng trong dn dng lm lan can, cu thang, ban cng,v c dng trong sn xut cng nghip. Mt s c im k thut my:

+ Kch thc my (cao x rng x ngang): 700 x 700 x 600, cm

+ Trng lng: 80Kg

+ Cng sut my: 1,1Kw

Hnh 1.7: My un st su u trcMy un st do cng ty Khataco Khnh Ha nghin cu, ch to c th un st vi ng knh un 20 (mm), gc un c th t c 1800. u im ca loi my ny l: Ch to tng i n gin, vn u t thp tuy nhin loi my ny c nhiu nhc im nh: chnh xc thp, khng gia cng st c ng knh ln, lc tc dng ln khng u nn d sinh ra khuyt tt. Loi my thng c s dng trong sn xut n chic v hng lot nh.

Hnh 1.8: My un st do cng ty Khataco Khnh ha ch to

Nh vy c th khng nh rng nhu cu s dng st un nc ta l rt ln nhng qua tm hiu thc t nc ta th hin nay cha c cng ty hay t chc no chuyn sn xut ha