thiét ké ét méy MUC LUC MO DAU ! .6 PHAN TINH DONG HOC I Chon dong czt 7 1.2 X:ie djnh toe dong b(o ciia do( ng cir die(n 1.3 C,hpn do) ng cir 3.1 Sii vong quay 3.2 Ciing suat trén c:ie trqc 3.3 Tinh women xoan trén c:ie trqc .9 3.4 Bang thii ng PHA.N T.INH TO.AN, T HIET KE CHI TIET MAY TINH BO, TRUYEN XICH P =1 ,64 KW; .10 1.6 Xac d]nh thiing sit ciia dia xich 12 1.7 Xiic d)nh luc t:ie dq ng trqc 13 P =1 64 KW; 13 II TINH TOAN THIET KE BO TR UYEH BATH TR ID RANG NGHIENG 14 P = PI - 1,70 (KW) 14 2.1 Chpn vfit li(u b:inh rang: .14 ×R — so xét den anh huéng cua nham bé maj t rang him vi(ec 14 ×e) 0s NFo'4 15 15 16 2.3 X:ie d]nh sir bo) khoang c:ich trqc 16 2.4 X:ie d)nh c:ie thiing 17 Goc nghiéng cua rang trén mat tru cc sci 17 2.5 X:ie d]nh c:ie h( so va mo( t so thiing so do) ng hpc .17 Tra phu lpc 2.3/250[1], vci: +CCX=9 .18 ×M — He so xét den cc tinh cua vat lieu banh rang 18 FH — he so ké den hinh dang bé maj t tiép xiic .18 KH — h so t:ii trpng tinh toan tiép xiic .19 Ung suat tiép xuc cho phép[«HP dupe tinh theo cong thirc 19 Tra bring 6.18,voi he so dich chinh x=0, ta co: { 20 2.7 C:ie thiing so hinh hpc ciia c(ap b:inh rang: .20 2.8 Bang tong két c:ie thiing so ciia bo truyén b:i nh rang nghiéng 21 IZ1 CHON KHOP NOI 22 3.1 Mii men xoan can truyén 22 3.2 Chpn vfit lie( u: .23 3.3 Kiém nghie(m site bén da( p ciia vong caosu: .23 3.4 Kiém nghie(m site bé uon ciia chot: 23 3.5 Lqc t:ie dqng trqc 23 ID TINH TRQC 23 4.1 Tinh sir b(o duirng kinh true 23 4.1.1 CJipn v t If u 23 4.2 X:ie d]nh lqc t:ie dq ng trqc va b:i nh rang 24 4.3.1 liii tr¿c Z .24 4.4 X:ie djnh phan luc c:ie gin trqc 25 R li (F - (l ‘l )+ Fal - d '2)/ 111 - 27 R, i i (Ft1 (O il )- F, (1» +l i i › 27 Rg io 'Fti -RgJ i - Fp '1057,3 -365, 15 — 103,55 '588,6 (N)>0 .27 4.5 Tinh thiet ke trqc 27 4.5.1 Tinh so' bet triic II 27 M 3'Il .29 M, 3' M,² + 0,15.T — + 0,75.23299 — 20 l llNmm 29 ‹ , a Ta tiet dun I -2 30 dl,(h —t, ) 20.40.(6 — 3,5) 30 b Tai tiet dren 1-3 .30 Voi then him bang thép, tin va da3p nhc: ta chpn dupc 30 ‹// (h — t, ) Voi thép 45 cO: w = 600 MPa 15.25.(5 — 3) o , —— 0,436.w, - 0,436.600 - 26l,6MP« 30 M M 32 31 2.d Trong do: [s] — he so an toiin cho ,[s] = 1,5 2,5 31 Khong dung cac’phuong phap tang bén be maj t do he so tang bén K,=1 32 K V TINH CHON VA KIEM NGHI M O LAN 33 5.1 Chpn o tan cho trijc II 33 LUC d©G tF1jG Fat,'290 N 33 5.2.3.Chpn sir dci be trt ii Ién 33 Z • - * — I, = 217,8 290,24 = —72,44 (N) < F,; nén Fat ' 64 16 N 34 5.2.5 Tinh sit 34 Yo = 1,48 34 5.2.6 Tinh téi trpng guy irhc, téi trpng tirong dirong ciia ci bi dé chan 34 5.2 Kiém right in o fun theo k:hit nding tin dong 34 Q = 944,762 N 35 C d '944,762 ' 930,6 '9223,8 N= 9,2238 kN < C = 9,43 kN 35 5.2.8.Kiém right in theo k:hé nding téi ti‘nh 35 X0 = 0,5 , Y0 =0,47 35 Qt0 '( X0 - F + Y0 - Fa0 '0 605+ 47 454 4' 516 N 35 Q '( X0 - F + Y0 - Fa1 '0 456 + 47 164 16' 305 N 35 PHAN III: KET CAU VO HOP 35 Z Ut9 HOP 35 1.2 Két cau nap ho( p .35 Céc kich thiréc ciia céc phén tii céu the nén hop giém tcic dhc • 35 II TINH TOAN THIET KE CAC CHI TIET KHAC 37 Ket cau banh rang tru dot xung .38 Cac dp doc p -(s — i) chpn p = 38 Voi h: la hich thu‹›c ranh thoat dao 38 Bang :Thiing so két can b:inh rang 38 2.2.1 trip ii 38 Trong D la duéng kinh lap o Ian 38 2.2.2 Czic hit 38 Duéng kinh lo lap ,ong lot .g III BOI TROD VA DIEU CHIHH AN KHOP 42 Béng thong ké dénh cho bet tron 42 Phan I : Tinh to:in do) ng hpc 44 I h©l1 TORQ CO .44 Phan :Tinh to:in thiét ké chi tiét in:iy 44 I.Tinh b(o truén xich 44 2.6 Kiém nghiém rang ve do) bén tiép xuc 45 2.6.3 Kiém nghiem ve qua tai 45 2.8 Bang tong két cac thong so ciia bo truyén banh rang nghiéng 45 Phan •: Keet cau ve I.Vo hop 45 TAI LIEU THAM KHAO 47 3- Huéing dan lam bai tap dung sai Ninh Dfrc Ton Nguyen Trong Hung 47 4- Bin ta)p ki thua)t 47 MO DAU ! Tinh toiin thiét ke’ he’ dan dong cc la rio dung khong the thiéu voi chuong trinh dao tao ki su cc nham cung cap cho sinh vién nhirng kie'n thuc cc sci ve két cau retry va ciic qua trinh cc ban thiét ké way.Trong quit trinh hpc mon Chi tiet may em da dune 1:inn quen voi nhirng kie'n thi rc cc ban ve két cau in:iy , cac tinh uang cc ban cua cac chi tiet in:iy thucing ga)p.Do :in mon hpc Chi tiet in:iy la két qu:i danh gin thuc chat nhat quit trinh hoc tap mon Chi tiet may,Ché tao phoi,dung sai Hop gum toe la thiét b| khong the thiéu cue retry cc khi,no co nhiém vu bién dot van toc vao mpt hay nhiéu va)n toc thuo) c vao cong dpng cua way Khi an thie't ke' Chi tiet retry thfiy giao cho, em da tim hiéu va co gang hoan an mon hpc Trong qua trinh law em da tim hiéu c:ie van de sau: Cach chpn dpng cc dien cho ho( p giiim toc Ciich phan phoi ti so truyén cho cue cap hop gum toe Cac chi tiéu tinh toan va cac thong “ cc ban cua hpp gi:inn toc Cac chi tiéu tinh toiin,ché tao biinh rang va truc Cach xac dinh thong so cua then Két ciiu, cong dqng va cach xac dinh cac thong “ cc ban chi tiet co lien quan Cach lap nip cac chi tiet lai vcii th:inh m o) t két cau way hoan chinh Cach tinh toiin vii x:ie dinh che' boi tron cho cfc chi tiet thaw gia truyén dong — (KW Tra bring 2.3[I] - trang 19 ta co : 0,92 Hi u suit bo truyén xich de ho — = 1,722 (KW) Tra b:ing 2.4[I] - trang 1,ta chpn ti so truyén ciia hop gram toe cup banh rang Tra bring P I [I] - trang 234,ta chon loai dong cc dién co ki hiéu : 4AI I2MA8Y3 , vcii cac thong so : *Cong suat dong cc: d = 2,2 KW *Van toe quay: n = 705 (vong/phut) o 76,5 *Cos ‹p = 0,71 I" max Tdn —— 2’2 - - 1730705 2.2 Phfin phoi ti so truyen ho( p gum toe : Chpn ty so cua bo( truyén ngoai U, = 2,30 U U 8,9 2,30 br ' 3,87 III Xéc dinh céc théne sé trén cue true 3.1 So vong quay So vong quay trén trijc dong cc la: , - 705 (vong/phiit) So vong quay true I : n,= ,=705 (vong/phut) —— So vong quay trén true “n tae: = = —182,2 (vong/phut) 182, ’ =79,2 (vong/philt) 3.2 Cung suat trén c:ie trqc Cong suat trén trijc cong tiic: P,, =1,5 (KW) Cong suat trén truc II: Pz 1,64 = 8,9 I tua S, =(1,3 —: 1,5) d,=(1,3 ÷ 1,5)14 = 18,2-21(mm).Chpn S, = 20 mm K = 3.d, - 14 = 42 mm q = K 26 = 42 2.7 = 56 mm; Khe ho giira cue chi tie’t: Gina banh rang vcii hop Gina dinh banh rang lci n vcii diiy hop Gina m(at bén cac banh rang vcri So luong bulong ne“ n Z ? ( 1,2).6 — (1 8,4 mm 1,2)7 Chon A = 8mm l = 5) = (3 5).7 = 21 35 mm Chon A = 25 [mm] A ? = mm lay A = mm L B ) / ( 200 ÷ 300) = 600+200/ II TINH TOAN THIET KE CA C CHI TIET KHA C 2.1.Ket 'u cac chi tiét chuyen d(eng 52 Két cau biinh ring tru doi xung Ta co Cac doe ‹p = (5 :— 7)’ chon ‹p = 5’ Cac ban kinh r;R dune tinh nhu sau: ;R=4(mm) Ven h: l:i kich thuoc ranh thoiit dao 35 35 32 20 23,8 29,4 39,8 20 50 42 32 20 146,8 98,4 162,8 30 2.2 Ket cau nap ii va ccc lét 2.2 Nap c› Ducing kinh nap o dupc xac djnh theo cong D³ Truc I Truc II Dung cho D² thirc 40 52 65 54 70 32 M6 hinh chir “ O “ 82 42 M6 I 8.5 A (mm) 100 B (mm) 75 A, (mm) 150 B, (mm) 100 C (mm) 125 (mm) ta chpn dupc kich thucic ctra K (mm) 87 R (mm) 12 Vit (mm) M8×22 So luong 2.4 Nut thiing hoi Khi lam viéc, nhiét hop ting le’n De gi:inn up suit va diéu hoa khong bén va ngoai hop, nguoi ta dung nut thong hot Nut thong hoi thuong 18.6 duoc lap trén nap cif a thaw Tra b:ing B [2] ta co kich thuoc ntit thong hot 93 A B C D E G H I K L M N O P Q R S M27×2 15 30 15 45 36 32 10 22 32 18 36 32 2.5 Ndt th:in dau Sau mot thoi gian law viec, dau boi tron chua ho( p, b;i ban (do bpi b a) m va hat mai), hoac b| biét chat, do can phiii thay d:iu moi De' thay d:iu cu, o day ' thiio dau 93 [2] ta co kich thucic ndt thiio dau d b M16× 1.5 12 in f L 23 c q 13,8 D 26 S 17 D 19,6 2.6.Kiém tra dau De' kiém tra muc diiu hop ta dung que thaw dau co ke't cau kich thuoc nhu hinh vé 2.7.Chot d]nh vj Mat ghép giiia nap va than mm mat phang chua duong tain cac truc Lo tru lap ci than hop & trén nap dupc gia cong dong ther, de diim bao v] tri tuong doi giiia nap va than truoc va sau gia cong cung nhu lap ghép, ta dung chot dinh v], nhcr cfc chot d]nh v] xiét bulong khong law bién ding ci vong ngofii ciia o 2.8.Ong hit va trip ii Ong lot duoc dung de o lan, de thu n trén lap vfi die’u chinh bo ph a(n o dong thoi trai cho o khoi but bare, chat ban ong lot dune law bang v:it lie“ u GX15- 32 ta chon kich thuoc cita ong lot nhu sau Chie’u diy: = '— 8(f?1f?1) , ta chpn # = 8(mm) De’ nang v:i van chuyen hop giam toc trén nap va thin thucing lap them bulong vong Kich thuoc bulong vong dupe chon theo khoi lupng hop giam toe Véii a= 105 mm , hop gum toe banh rang tru cap, tra bring 89 [2] ta co Q 40(Kg), III BOI TRON VA DIEU CHINH AN KHOP 3.1 Biii tren ho( p gum toe Do bo truyén banh rang ho) p gum toc déu co r é 12(»i / s) nén ta chon phuong phiip boi tron ngani dau Voi van toe vong cua biinh ring nghiéng v 1,6 m/s < 12 m/s tra bang B Tra ban B 18 I I 2] ta duoc nhcrt cita dau 186/16 ting voi 100’C ta chon dune loai diiu I:i: AK-15 co nhot la 20 Centistic 3.2 Bfii trun n$oai ho( p Véii bo truyén ngoai hop law viéc sé dinh bui b)am ho) p khong dupe che kin nén ta dung phuong phap boi tron d]nh ki bang mci Bang théng ké danh cho bc›i tron Te“ n dau ho)ac mcr Dau oU in:iy kéo AK-15 Thie“ t bi can boi tron Bo truyén Lupng dau ho)ac mo Thoi giant hay diiu ho)ac mo 0,6 lit/KW thiing 3.3 Die chinh su an khéip De lap banh rang tru.c ta dung moi ghép then voi banh ton va chon hieu lap la H7/k6 vi no ch]u tfii vtra va va da( p nhe.De diéu chinh su in khép cua hop gum toc banh rang tru n:iy ta chon chie“ u ro) ng banh rang nho tang ten 10% so vcii chiéu rong b:inh rang tern IV BANK THONG KE CAC KIEU LAP VA DUNE SAI khong yéu cau thao lap thucrng xuye’n ta chon kiéu voi o lan, khop noi, dia xich dune chon bring Kie’u lap Truc-vong o bi ) EI( Truc ES( ) a17k6 +25 I True-biinh rang Truc-bac Truc-biinh rang DT T €6 Truc-vong o bi II a25k6 Vo-vong ngoai o bi ×52H7 Truc-bpc Truc- bpc +30 *195 +65 *195 +65 b a n h r a n g Met dfiu Phan : Tinh to:in do( ng hpc I.Chpn do) ng cc 1.1 Xac d|nh cong suat dat trén truc dong cc 1.2 Xiic dinh toc dp dong b o) ctia do) ng cc die:n 1.3.Chon dong cc II.Phan phoi ty so truyén Xac dinh ty so truyén chung cho cii he’ thong 2.2.Phiin phoi ty so truyén ho( p giiim toc III.Xac dinh cac thong so trén cue tru.c 1.So vong quay 3.2 Cong suat trén cue truc 3.3 Tinh women xoan trén cac trijc 3.4.Bring thong so dong hoc Phan :Tinh to:in thiet ké chi tiet in:i y I Tinh bo( truén xich 1.1 Chon loai xich 1.2 Chpn so rang dia xich 1.3 Xac dinh buoc xich p 1.4 X:ic dinh khoiing cach trijc va so mat xich 1.5 Tinh kiém nghiem ve’ bén xich 1.6 Xiic dinh thong so cua dia xich 1.7 Xac dinh luc tae dung truc 1.8 C:ic thong so ciia bo truyén xich II.Tinh to:in thiét ké bo) truyén banh tru rang nghiéng I Chpn v t lieu banh rang 2.2 Xac dinh ung suat cho phép 2.2 1.Ung suat tiép xuc cho phe’p, vfi if ng suit uon cho phép 2.2.2Ung stiat uon cho phép gut tai 2.3 .Xac dinh so bo khoang c:ich truc 2.4 X:ic d›nh c:ic thong so in khép 2.4 lXac dinh mo dun phap in 2.4.2.Xac d›nh so rang 2.4.3 Xac dinh goc nghiéng ciia rang va mo) t 2.6.Kiém nghiem bp truyén Trang ' ciia bo truye’n banh rang nghiéng 1.Chon ' tan cchhoo truc II 5.2.Chon o lan cho truc I 5.2 1.Chpn loai o lan 5.2.2.Chpn kich thuoc o tan 5.2.3.Chpn so bo tri o tan 5.2.4.Luc dpc truc huong than sinh tre’n c:ic o 5.2.5.Tinh ty so 5.2.6 Tinh tai trpng guy uoc, t:ii tuong duong cua o bi cha)n 5.2.7 Kie“ m nghie“ m o lan theo kh:i uang tai dong 5.2.8 Kie’m nghie’m theo kha nang t:ii tinh : Kéet ca’nu vii h(op ’ va ong lot 3.Cita thaw TAI LI U THAM KHAO I -Tinh toiin thiét ké he dan dong cc khi, ta(p [TKI], tap 2[TK2] — Tr| nh Chat — Le Van Uyén Nha xuat b:in giiio duc — 1999 2-Chi tie't way, tap 1, tap 2[3] Nguyen Trong Hiép, nha xuiit ban giao due 3-Huong dan law bar tip dung sai — Ninh Due Ton — Nguyen Trong Hung Trifling Dar Hoc Bach Khoa H:i Npi, mm 2000 4-Bai tap ki thu:it Ninh Due Ton, Nguyen Trong Hung, Nguyen Thi Cain Tu Nha xuat ban giao duc ... (KW Tra bring 2.3[I] - trang 19 ta co : 0,92 Hi u suit bo truyén xich de ho — = 1,722 (KW) Tra b:ing 2.4[I] - trang 1,ta chpn ti so truyén ciia hop gram toe cup banh rang Tra bring P I [I] - trang... tap; do, no dune dung rat rong rfii ki thuiit 1.2.Chpn sfi rang dia xich Voi u,=2,3, ta chpn so rang dia xich nho la: Z = 29-2 u =29-2.2,3 = 24,4s Zp, =19 Chpn Z = 25 (rang) So ring dia xich... (gio) 2.1 Chpn va( t lieu bii nh rang: Hpp gi:inn toc ch|u cong suat nho , nén chpn vat 1i|éu co ran HB é 350, banh rang dune thucing hoa hoac toi cai thién Tra bfing 1/92 tttkhddck tip ta co: