Nguy\u1ec5n M\u1ea1nh Ho\u1ea1t <\/em><\/strong><\/p>\n Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam<\/em><\/p>\n – \u00e1p su\u1ea5t tr\u00ean m\u1eb7t b\u00e0n \u00e9p t\u1ed1i \u0111a:pmax = 25 kg\/cm2<\/sup><\/p>\n – T\u1ed5ng \u00e1p l\u1ef1c tr\u00ean b\u00e0n \u00e9p : P = 900 t\u1ea5n<\/p>\n – Khe h\u1edf gi\u1eefa hai b\u00e0n \u00e9p : h = 250mm<\/p>\n – Th\u1eddi gian n\u00e2ng b\u00e0n \u00e9p : t = 30 gi\u00e2y<\/p>\n – Th\u1eddi gian gi\u1eef \u00e1p l\u1ef1c : T = 15 ph\u00fat<\/p>\n – K\u00edch th\u01b0\u1edbc c\u1ee7a b\u00e0n \u00e9p : * D\u00e0i: 2650 mm<\/p>\n * R\u1ed9ng: 1350 mm<\/p>\n – M\u00e1y \u00e9p tr\u1ef1c ti\u1ebfp kh\u00f4ng qua \u00e9p s\u01a1 b\u1ed9<\/p>\n – Nhi\u1ec7t \u0111\u1ed9 \u00e9p t\u1ed1i \u0111a: T max<\/sup> = 180oC<\/sup><\/p>\n – Pha nhi\u1ec7t : D\u00f9ng h\u01a1i n\u01b0\u1edbc qu\u00e1 nhi\u1ec7t<\/p>\n – Ngu\u1ed3n \u0111\u1ed9ng l\u1ef1c : \u0110\u1ed9ng c\u01a1 \u0111i\u1ec7n v\u00e0 th\u1ee7y l\u1ef1c<\/p>\n – H\u01b0\u1edbng n\u1ea1p v\u00e1n : Theo chi\u1ec1u d\u1ecdc c\u1ee7a m\u00e1y \u00e9p<\/p>\n 1. N\u1ed9i dung nghi\u00ean c\u1ee9u<\/strong><\/p>\n 1.1.<\/em><\/strong> Nghi\u00ean c\u1ee9u l\u1ef1a ch\u1ecdn m\u1eabu m\u00e1y \u00e9p<\/strong><\/em><\/p>\n C\u0103n c\u1ee9 v\u00e0o c\u00e1c th\u00f4ng s\u1ed1 \u0111\u00e3 l\u1ef1a ch\u1ecdn, ch\u00fang t\u00f4i \u0111\u00e3 kh\u1ea3o s\u00e1t k\u1ebft c\u1ea5u c\u1ee7a m\u1ed9t s\u1ed1 lo\u1ea1i m\u00e1y \u00e9p nhi\u1ec7t trong d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t v\u00e1n d\u0103m, v\u00e1n s\u1ee3i hi\u1ec7n \u0111\u1ea1i c\u1ee7a \u0110\u1ee9c, \u0110\u00e0i Loan, Trung Qu\u1ed1c – thu\u1ed9c th\u1ebf h\u1ec7 m\u1edbi, c\u00f3 m\u1eb7t \u1edf n\u01b0\u1edbc ta trong v\u00e0i n\u0103m g\u1ea7n \u0111\u00e2y v\u00e0 th\u1ea5y r\u1eb1ng: c\u00e1c lo\u1ea1i m\u00e1y n\u00e0y \u0111\u1ec1u c\u00f3 k\u1ebft c\u1ea5u g\u1ea7n gi\u1ed1ng nhau v\u1edbi c\u00e1c c\u1eb7p khung h\u00ecnh ch\u1eef nh\u1eadt \u0111\u1eb7t song song v\u1edbi nhau theo ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng v\u00e0 c\u00e1ch \u0111\u1ec1u nhau m\u1ed9t kho\u1ea3ng L nh\u1ea5t \u0111\u1ecbnh. N\u1ebfu c\u00f4ng su\u1ea5t d\u00e2y chuy\u1ec1n l\u1edbn th\u00ec s\u1ed1 l\u01b0\u1ee3ng c\u1eb7p khung \u0111\u01b0\u1ee3c k\u00e9o d\u00e0i ra \u0111\u1ec3 m\u1ed7i l\u1ea7n \u00e9p \u0111\u01b0\u1ee3c s\u1ed1 l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m nhi\u1ec1u h\u01a1n; chi\u1ec1u d\u1ecdc m\u00e1y \u00e9p l\u00e0 b\u1ed9i s\u1ed1 c\u1ee7a con s\u1ed1 = 2.610(mm) nh\u01b0 : 5.220\/7.830\/15.660(mm). \u0110\u1ed3ng th\u1eddi c\u00e1c con s\u1ed1 tr\u00ean c\u0169ng \u1ee9ng v\u1edbi c\u00e1c c\u1eb7p khung h\u00ecnh ch\u1eef nh\u1eadt l\u00e0 4\/6\/12. T\u1eeb \u0111\u00f3 ch\u00fang t\u00f4i quy\u1ebft \u0111\u1ecbnh ch\u1ecdn k\u1ebft c\u1ea5u khung m\u00e1y g\u1ed3m 2 c\u1eb7p khung h\u00ecnh ch\u1eef nh\u1eadt v\u00e0 \u0111\u01b0\u1ee3c li\u00ean k\u1ebft v\u1edbi nhau b\u1eb1ng 4 tr\u1ee5c tr\u00f2n d\u1ecdc. L\u1ef1a ch\u1ecdn n\u00e0y l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 t\u00ednh to\u00e1n s\u1ee9c b\u1ec1n v\u00e0 \u0111\u1ecbnh k\u1ebft c\u1ea5u m\u00e1y.<\/p>\n 1.2.<\/em><\/strong>Nghi\u00ean c\u1ee9u l\u1ef1a ch\u1ecdn s\u01a1 \u0111\u1ed3 k\u1ebft c\u1ea5u m\u00e1y \u00e9p<\/strong><\/em><\/p>\n \u0110\u1ec3 ch\u1ecdn s\u01a1 \u0111\u1ed3 k\u1ebft c\u1ea5u m\u00e1y ta d\u1ef1a v\u00e0o c\u00f4ng ngh\u1ec7 \u00e9p, k\u00edch th\u01b0\u1edbc y\u00eau c\u1ea7u c\u1ee7a s\u1ea3n ph\u1ea9m v\u00e0 s\u01a1 \u0111\u1ed3 b\u1ed1 tr\u00ed d\u00e2y chuy\u1ec1n thi\u1ebft b\u1ecb s\u1ea3n xu\u1ea5t.<\/p>\n Ch\u1ecdn s\u01a1 \u0111\u1ed3 k\u1ebft c\u1ea5u m\u00e1y<\/p>\n Khungm\u00e1y \u00e9p Th\u1edbt l\u1ef1c T\u0129nh<\/p>\n Th\u1edbt l\u1ef1c \u0111\u1ed9ng Th\u00f9ng d\u1ea7u Thu\u1ef7 l\u1ef1c<\/p>\n Xi lanh Thu\u1ef7 l\u1ef1c<\/p>\n H\u00ecnh 1 S\u01a1 \u0111\u00f2 k\u1ebft c\u1ea5u m\u00e1y<\/u><\/em><\/p>\n Ch\u1ecdn v\u00e0 t\u00ednh to\u00e1n c\u00e1c h\u1ec7 th\u1ed1ng ch\u00ednh c\u1ee7a m\u00e1y<\/p>\n + L\u1ef1a ch\u1ecdn h\u1ec7 th\u1ed1ng thu\u1ef7 l\u1ef1c (ngu\u1ed3n \u0111\u1ed9ng l\u1ef1c)<\/p>\n M\u00e1y \u00e9p t\u1ea1o \u0111\u01b0\u1ee3c \u00e1p l\u1ef1c tr\u00ean b\u1ec1 m\u1eb7t b\u00e0n \u00e9p b\u1eb1ng h\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c g\u1ed3m c\u00f3 c\u00e1c xi lanh th\u1ee7y l\u1ef1c v\u00e0 b\u1ed9 ngu\u1ed3n th\u1ee7y l\u1ef1c bao g\u1ed3m: Th\u00f9ng ch\u1ee9a d\u1ea7u thu\u1ef7 l\u1ef1c, h\u1ec7 th\u1ed1ng b\u01a1m g\u1ed3m b\u01a1m l\u01b0u l\u01b0\u1ee3ng v\u00e0 b\u01a1m cao \u00e1p. B\u01a1m l\u01b0u l\u01b0\u1ee3ng ph\u1ea3i \u0111\u1ea1t th\u00f4ng s\u1ed1 ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u c\u00f4ng ngh\u1ec7 \u00e9p v\u00e1n, ph\u1ee5 thu\u1ed9c v\u00e0o l\u01b0\u1ee3ng d\u1ea7u c\u1ea7n c\u1ea5p cho c\u00e1c xi lanh thu\u1ef7 l\u1ef1c v\u1edbi th\u1eddi gian n\u00e2ng b\u00e0n \u00e9p [t] = 30 gi\u00e2y. B\u01a1m cao \u00e1p ph\u1ea3i \u0111\u1ea1t \u0111\u1ebfn \u00e1p su\u1ea5t 350kg\/cm2<\/sup>. C\u00e1c van \u0111i\u1ec1u khi\u1ec3n, van an to\u00e0n, van m\u1ed9t chi\u1ec1u ph\u1ea3i k\u00edn kh\u00edt \u0111\u1ec3 gi\u1eef \u00e1p l\u1ef1c v\u00e0 c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u00e1p su\u1ea5t tr\u00ean m\u1eb7t b\u00e0n \u00e9p theo y\u00eau c\u1ea7u c\u00f4ng ngh\u1ec7. B\u01a1m l\u01b0u l\u01b0\u1ee3ng v\u00e0 b\u01a1m cao \u00e1p \u0111\u01b0\u1ee3c v\u1eadn h\u00e0nh b\u1eb1ng \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n. C\u00f3 2 ph\u01b0\u01a1ng \u00e1n l\u1ef1a ch\u1ecdn s\u1ed1 xi lanh th\u1ee7y l\u1ef1c l\u00e0:<\/p>\n 1\/- D\u00f9ng 4 xi lanh, m\u1ed7i xi lanh c\u00f3 \u00e1p l\u1ef1c 225 t\u1ea5n th\u00ec P = 225 x 4 = 900t\u1ea5n<\/p>\n 2\/- D\u00f9ng 6 xi lanh, m\u1ed7i xi lanh c\u00f3 \u00e1p l\u1ef1c 150 t\u1ea5n th\u00ec P = 150 x 6 = 900t\u1ea5n<\/p>\n Ta ch\u1ecdn ph\u01b0\u01a1ng \u00e1n 4 xi lanh, ph\u00f9 h\u1ee3p v\u1edbi k\u1ebft c\u1ea5u khung m\u00e1y \u0111\u00e3 ch\u1ecdn \u1edf tr\u00ean v\u00e0 nh\u01b0 v\u1eady tra b\u1ea3ng t\u00ecm ch\u1ecdn \u0111\u01b0\u1ee3c lo\u1ea1i xi lanh k\u00e9p c\u00f3 \u0111\u01b0\u1eddng k\u00ednh piston d = 300mm. T\u1eeb \u0111\u00f3 t\u00ednh \u0111\u01b0\u1ee3c l\u01b0\u1ee3ng d\u1ea7u thu\u1ef7 l\u1ef1c c\u1ea7n thi\u1ebft nh\u01b0 sau:<\/p>\n L\u01b0\u1ee3ng d\u1ea7u \u0111\u1ea9y v\u00e0o xi lanh khi \u00e9p s\u1ea3n ph\u1ea9m: m = ?d2<\/sup>\/4 x 4 x h<\/p>\n m = 3,14 x 3 x3 x2,5 = 70 (l\u00edt)<\/p>\n L\u01b0\u1ee3ng d\u1ea7u t\u1ed1i thi\u1ec3u c\u1ea7n cho c\u1ea3 h\u1ec7 th\u1ed1ng: M = m x 5 = 70 x 5 = 350 l\u00edt<\/p>\n + \u0110\u1ec3 t\u00ednh k\u00edch th\u01b0\u1edbc th\u00f9ng d\u1ea7u ph\u1ea3i c\u0103n c\u1ee9 v\u00e0o l\u01b0\u1ee3ng d\u1ea7u c\u1ea7n thi\u1ebft tr\u00ean v\u00e0 s\u01a1 \u0111\u1ed3 b\u1ed1 tr\u00ed h\u1ec7 th\u1ed1ng b\u1ed9 ngu\u1ed3n thu\u1ef7 l\u1ef1c v\u00e0 c\u00e1c van \u0111i\u1ec1u khi\u1ec3n \u0111\u1eb7t tr\u00ean n\u1eafp th\u00f9ng d\u1ea7u. T\u1eeb c\u00e1c t\u00ednh to\u00e1n v\u1ec1 thu\u1ef7 l\u1ef1c theo c\u00e1c th\u00f4ng s\u1ed1 c\u00f4ng ngh\u1ec7 y\u00eau c\u1ea7u tr\u00ean ta ch\u1ecdn v\u00e0 b\u1ed1 tr\u00ed s\u01a1 \u0111\u1ed3 h\u1ec7 th\u1ed1ng thu\u1ef7 l\u1ef1c v\u00e0 ch\u1ecdn mua c\u00e1c lo\u1ea1i thi\u1ebft b\u1ecb thu\u1ef7 l\u1ef1c ch\u1ee7 y\u1ebfu l\u00e0:B\u01a1m l\u01b0u l\u01b0\u1ee3ng 150 l\u00edt\/ph\u00fat v\u1edbi \u00e1p su\u1ea5t 40 – 70kg\/cm2 <\/sup>v\u00e0 b\u01a1m t\u0103ng \u00e1p k\u00e9p \u0111\u1ea1t \u00e1p su\u1ea5t t\u1ed1i \u0111a = 350 kg\/cm2<\/sup>. C\u00e1c lo\u1ea1i van ph\u00e2n ph\u1ed1i, van \u0111i\u1ec1u khi\u1ec3n, van m\u1ed9t chi\u1ec1u, van x\u1ea3 nhanh, van x\u1ea3ch\u1eadm, van an to\u00e0n,\u2026 <\/em>ph\u1ea3i c\u00f9ng h\u00e3ng s\u1ea3n xu\u1ea5t v\u1edbi b\u01a1m \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 \u0111\u1ed3ng b\u1ed9.<\/p>\n V\u1eadn chuy\u1ec3n th\u1ea3m d\u0103m v\u00e0o m\u00e1y \u00e9p v\u00e0 v\u00e1n \u0111\u00e3 \u00e9p ra<\/em><\/p>\n D\u0103m \u0111\u01b0\u1ee3c tr\u1ea3i tr\u00ean t\u1ea5m l\u00f3t t\u1eeb m\u00e1y tr\u1ea3i th\u1ea3m, th\u1ea3m d\u0103m n\u1eb1m tr\u01b0\u1edbc m\u00e1y \u00e9p, tr\u00ean h\u1ec7 th\u1ed1ng con l\u0103n. \u0110\u1ec3 s\u1ea3n xu\u1ea5t nh\u1ecbp nh\u00e0ng th\u00ec ph\u1ea3i t\u00ednh chu k\u1ef3 \u00e9p v\u00e1n ph\u00f9 h\u1ee3p v\u1edbi c\u00f4ng su\u1ea5t y\u00eau c\u1ea7u \u0111\u1ec3 sau khi \u00e9p xong, th\u1edbt l\u1ef1c \u0111\u1ed9ng h\u1ea1 xu\u1ed1ng k\u00e9o theo t\u1ea5m l\u00f3t, t\u1ea5m l\u00f3t n\u00e0y m\u00f3c v\u00e0o t\u1ea5m l\u00f3t ch\u1ee9a th\u1ea3m d\u0103m \u0111ang n\u1eb1m ph\u00eda tr\u01b0\u1edbc m\u00e1y \u00e9p Khi t\u1eddi k\u00e9o t\u1ea5m v\u00e1n \u0111\u00e3 \u00e9p ra kh\u1ecfi m\u00e1y \u00e9p (H\u00ecnh 2) th\u00ec th\u1ea3m d\u0103m ch\u01b0a \u00e9p \u0111\u01b0\u1ee3c k\u00e9o v\u00e0o m\u00e1y \u00e9p \u0111\u00fang v\u1ecb tr\u00ed y\u00eau c\u1ea7u.<\/p>\n Nh\u01b0 v\u1eady th\u1eddi gian y\u00eau c\u1ea7u cho m\u1ed9t chu k\u1ef3 \u00e9p l\u00e0: T = T n\u1ea1p <\/sub>+ T xa<\/sub>+ T ep<\/sub><\/p>\n + Th\u1eddi gian n\u1ea1p v\u00e1n v\u00e0o b\u1eb1ng th\u1eddi \u0111\u01b0a v\u00e1n ra = T n\u1ea1p<\/sub><\/p>\n + Th\u1eddi gian x\u1ea3 \u00e1p = T xa<\/sub><\/p>\n + Th\u1eddi gian \u00e9p v\u00e1n = T ep<\/sub><\/p>\n V\u00e1n \u0111ang \u00e9p Th\u1edbt l\u1ef1c t\u0129nh<\/p>\n Th\u1ea3m d\u0103m ch\u01b0a \u00e9p T\u1ea5m l\u00f3t<\/p>\n Th\u1edbt l\u1ef1c \u0111\u1ed9ng<\/p>\n Xi lanh \u00e9p<\/p>\n D\u00e0n con l\u0103n<\/p>\n H\u00ecnh2: S\u01a1 \u0111\u1ed3 v\u1eadn chuy\u1ec3n th\u1ea3m d\u0103m v\u00e0 v\u00e1n \u00e9p <\/em><\/u><\/p>\n Khi t\u1ea5m v\u00e1n \u0111\u00e3 \u00e9p xong l\u1ea1i \u0111\u01b0\u1ee3c k\u00e9o ti\u1ebfp \u0111\u1ebfn v\u1ecb tr\u00ed t\u1eadp k\u1ebft, v\u00e1n \u0111\u01b0\u1ee3c l\u1ea5y ra kh\u1ecfi t\u1ea5m l\u00f3t. L\u00fac n\u00e0y t\u1ea5m l\u00f3t \u0111\u01b0\u1ee3c t\u1ef1 do v\u00e0 \u0111\u01b0\u1ee3c \u0111\u01b0a quay tr\u1edf l\u1ea1i m\u00e1y tr\u1ea3i th\u1ea3m b\u1eb1ng h\u1ec7 th\u1ed1ng v\u1eadn chuy\u1ec3n c\u01a1 h\u1ecdc \u0111\u1ec3 ti\u1ebfp t\u1ee5c chu tr\u00ecnh kh\u00e9p k\u00edn.<\/p>\n K\u00e9o v\u00e1n ra nh\u1edd m\u1ed9t t\u1eddi li\u00ean t\u1ee5c c\u00f3 t\u1ed1c \u0111\u1ed9 d\u00e0i c\u1ee7a d\u00e2y c\u00e1p < 30 m\/ph\u00fat v\u1edbi \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n c\u00f4ng su\u1ea5t 1 kw x 1450 v\/ph. C\u00e1c con l\u0103n ki\u1ec3u tr\u1ee5c c\u00f3 th\u1ec3 thay th\u1ebf b\u1eb1ng g\u1ed1i quay hai tr\u1ee5c t\u1ef1 do. Ngo\u00e0i ra tr\u01b0\u1edbc khi k\u00e9o t\u1ea5m v\u00e1n \u0111\u00e3 \u00e9p \u0111\u1ebfn v\u1ecb tr\u00ed t\u1eadp k\u1ebft ph\u1ea3i s\u1eed d\u1ee5ng m\u1ed9t c\u01a1 c\u1ea5u th\u00e1o kh\u1edbp gi\u1eefa hai t\u1ea5m l\u00f3t \u0111ang m\u00f3c v\u00e0o nhau. C\u01a1 c\u1ea5u n\u00e0y d\u00f9ng cam \u0111\u1ec3 n\u00e2ng t\u1ea5m l\u00f3t c\u1ee7a v\u00e1n chu\u1ea9n b\u1ecb \u00e9p ( H\u00ecnh 3 ):<\/p>\n Th\u1edbt l\u1ef1c V\u00e1n chu\u1ea9n b\u1ecb \u00e9p Cam th\u00e1o m\u00f3c<\/p>\n V\u00e1n \u0111\u00e3 \u00e9p<\/p>\n M\u00e1y \u00e9p<\/p>\n T\u1ea5m l\u00f3t<\/p>\n <\/p>\n Con l\u0103n \u0111\u1ee1<\/p>\n <\/p>\n H\u00ecnh 3<\/em>: C\u01a1 c\u1ea5u n\u00e2ng v\u00e1n \u00e9p<\/p>\n 1.4. T\u00ednh to\u00e1n h\u1ec7 khung c\u1ee7a m\u00e1y<\/em><\/strong><\/p>\n Nh\u01b0 tr\u00ean ta \u0111\u00e3 l\u1ef1a ch\u1ecdn k\u1ebft c\u1ea5u khung m\u00e1y \u00e9p s\u1eed d\u1ee5ng hai c\u1eb7p v\u00ec (H\u00ecnh 4), tr\u00ean hai c\u1eb7p v\u00ec \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t c\u00e1c h\u1ec7 th\u1ed1ng nh\u01b0 xi lanh th\u1ee7y l\u1ef1c, th\u1edbt l\u1ef1c t\u0129nh, b\u00e0n nhi\u1ec7t, h\u1ec7 th\u1ed1ng d\u1eabn h\u01b0\u1edbng cho th\u1edbt l\u1ef1c \u0111\u1ed9ng chuy\u1ec3n \u0111\u1ed9ng \u0111\u00fang qu\u1ef9 \u0111\u1ea1o.<\/p>\n Gugi\u00f4ng<\/p>\n V\u00ec Th\u1edbt l\u1ef1c<\/p>\n xi lanh th\u1ee7y l\u1ef1c<\/p>\n H\u00ecnh 4: Khung m\u00e1y \u00e9p<\/em><\/p>\n Khung m\u00e1y \u00e9p c\u00f3 hai v\u00ec \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o \u0111\u1ed9c l\u1eadp v\u00e0 \u0111\u01b0\u1ee3c l\u1eafp v\u1edbi nhau nh\u1edd nh\u1eefng gugi\u00f4ng l\u1edbn k\u00e9o su\u1ed1t chi\u1ec1u d\u00e0i m\u00e1y. V\u00ec v\u1eady khi x\u00e2y d\u1ef1ng s\u01a1 \u0111\u1ed3 t\u00ednh to\u00e1n ch\u00fang t\u00f4i cho m\u1ed9t v\u00ec ch\u1ec9 ch\u1ecbu m\u1ed9t n\u1eeda t\u1ea3i tr\u1ecdng c\u1ee7a m\u00e1y \u00e9p. K\u1ebft c\u1ea5u v\u00ec l\u00e0 s\u1ef1 li\u00ean k\u1ebft gi\u1eefa hai t\u1ea5m t\u00f4n d\u00e0y = 35 mm \u0111\u1eb7t song song.<\/p>\n L<\/p>\n H<\/p>\n P = 900\/2<\/p>\n H\u00ecnh 5<\/u><\/em><\/strong><\/p>\n Nh\u01b0 v\u1eady, s\u01a1 \u0111\u1ed3 t\u00ednh to\u00e1n l\u00e0 h\u1ec7 khung si\u00eau t\u0129nh, l\u1ef1c P = 900\/2 = 450t\u1ea5n.<\/p>\n Theo s\u1ed5 tay s\u1ee9c b\u1ec1n v\u1eadt li\u1ec7u ta c\u00f3 bi\u1ec3u \u0111\u1ed3 v\u00e0 gi\u00e1 tr\u1ecb c\u00e1c l\u1ef1c nh\u01b0 sau:<\/p>\n +Bi\u1ec3u \u0111\u1ed3 m\u00f4 men u\u1ed1n tr\u00ean v\u00ec<\/em><\/p>\n P.l 16<\/p>\n (M) 3P.l 16<\/p>\n + L\u1ef1c c\u1eaft<\/em><\/p>\n ` (Q)<\/p>\n + L\u1ef1c k\u00e9o tr\u00ean v\u00ec khung<\/em><\/p>\n (N)<\/p>\n T\u1eeb c\u00e1c bi\u1ec3u \u0111\u1ed3 l\u1ef1c tr\u00ean v\u00e0 c\u00e1c k\u1ebft qu\u1ea3 c\u1ee7a c\u00e1c ph\u00e9p t\u00ednh ta t\u00ecm \u0111\u01b0\u00ad\u1ee3c c\u00e1c th\u00f4ng s\u1ed1 ch\u00ednh \u0111\u1ec3 thi\u1ebft k\u1ebf, ch\u1ebf t\u1ea1o khung m\u00e1y \u00e9p, th\u1edbt l\u1ef1c t\u0129nh, th\u1edbt l\u1ef1c \u0111\u1ed9ng; \u0111\u1ed3ng th\u1eddi l\u1ef1a ch\u1ecdn c\u00e1c thi\u1ebft b\u1ecb, v\u1eadt t\u00ad\u01b0 m\u00e0 trong n\u01b0\u00ad\u1edbc ch\u01b0\u00ada th\u1ec3 ch\u1ebf t\u1ea1o \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u c\u00f4ng ngh\u1ec7 c\u1ee7a \u0111\u1ec1 t\u00e0i l\u00e0:<\/p>\n + Gia nhi\u1ec7t b\u1eb1ng h\u01a1i qu\u00e1 nhi\u1ec7t, trong n\u01b0\u00ad\u1edbc ch\u01b0\u00ada ch\u1ebf t\u1ea1o \u0111\u00ad\u01b0\u1ee3c th\u1edbt nhi\u1ec7t h\u01a1i ch\u1ecbu \u00e1p l\u1ef1c cao p > 6 at; trong khi y\u00eau c\u1ea7u: p = 10 at<\/p>\n + H\u1ec7 th\u1ed1ng c\u00e1c thi\u1ebft b\u1ecb thu\u1ef7 l\u1ef1c v\u1edbi c\u00e1c van ph\u00e2n ph\u1ed1i, van ti\u1ebft l\u01b0\u00adu, van an to\u00e0n c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o qu\u00e1 tr\u00ecnh th\u1ef1c hi\u1ec7n c\u00f4ng ngh\u1ec7 chu\u1ea9n x\u00e1c. C\u00e1c thi\u1ebft b\u1ecb \u0111\u00f3 trong n\u01b0\u1edbc c\u0169ng ch\u01b0a c\u00f3 C\u00f4ng ty n\u00e0o ch\u1ebf t\u1ea1o \u0111\u01b0\u1ee3c n\u00ean ph\u1ea3i nh\u1eadp kh\u1ea9u c\u1ee7a \u0110\u00e0i Loan, \u0111\u1ec3 v\u1eeba \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u1eeba c\u00f3 gi\u00e1 th\u00e0nh h\u1ee3p l\u00fd.<\/p>\n Ngo\u00e0i ra c\u00e1c chi ti\u1ebft, v\u1eadt t\u01b0 thi\u1ebft b\u1ecb theo ti\u00eau chu\u1ea9n nh\u01b0\u00ad: \u0110\u1ed9ng c\u01a1 \u0110i\u1ec7n, \u1ed1ng th\u00e9p ,\u2026 ch\u00fang t\u00f4i l\u1ef1a ch\u1ecdn mua c\u1ee7a c\u00e1c C\u00f4ng ty trong n\u01b0\u00ad\u1edbc s\u1ea3n xu\u1ea5t \u0111\u1ea3m b\u1ea3o y\u00eau c\u1ea7u thi\u1ebft k\u1ebf \u0111\u1eb7t ra.<\/p>\n 2. K\u1ebft lu\u1eadn<\/strong><\/p>\n Sau khi thi\u1ebft k\u1ebf xong, ch\u00fang t\u00f4i \u0111\u00e3 ti\u1ebfn h\u00e0nh ch\u1ebf t\u1ea1o t\u1ea1i x\u01b0\u1edfng c\u1ee7a Trung t\u00e2m C\u00f4ng nghi\u1ec7p R\u1eebng thu\u1ed9c Vi\u1ec7n Khoa h\u1ecdc L\u00e2m nghi\u1ec7p Vi\u1ec7t Nam v\u00e0 ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m m\u00e1y. K\u1ebft qu\u1ea3 cho th\u1ea5y m\u00e1y ho\u1ea1t \u0111\u1ed9ng \u0111\u1ea1t c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ch\u1ee7 y\u1ebfu \u0111\u1eb7t ra ban \u0111\u1ea7u. Hi\u1ec7n nay m\u00e1y \u00e9p nhi\u1ec7t 900 t\u1ea5n \u0111ang ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t v\u00e1n d\u0103m qui m\u00f4 nh\u1ecf t\u1eeb g\u1ed7 r\u1eebng tr\u1ed3ng c\u1ee7a \u0110\u1ec1 t\u00e0i c\u1ea5p nh\u00e0 n\u01b0\u1edbc: KC 07. 10, t\u1ea1i L\u00e2m tr\u01b0\u1eddng Xu\u00e2n \u0110\u00e0i, huy\u1ec7n Thanh S\u01a1n, t\u1ec9nh Ph\u00fa Th\u1ecd.<\/p>\n K\u1ebft qu\u1ea3 tr\u00ean ch\u1ee9ng t\u1ecf v\u1edbi tr\u00ecnh \u0111\u1ed9 c\u00f4ng ngh\u1ec7 v\u00e0 thi\u1ebft b\u1ecb hi\u1ec7n nay ch\u00fang ta ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 t\u1ef1 thi\u1ebft k\u1ebf, ch\u1ebf t\u1ea1o \u0111\u01b0\u1ee3c m\u00e1y \u00e9p nhi\u1ec7t h\u01a1i trong d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t v\u00e1n d\u0103m qui m\u00f4 v\u1eeba v\u00e0 nh\u1ecf, gi\u1ea3m \u0111\u01b0\u1ee3c \u00edt nh\u1ea5t 50% gi\u00e1 th\u00e0nh m\u00e1y do ch\u1ec9 ph\u1ea3i nh\u1eadp m\u1ed9t s\u1ed1 lo\u1ea1i v\u1eadt t\u01b0 m\u00e0 trong n\u01b0\u1edbc ch\u01b0a ch\u1ebf t\u1ea1o \u0111\u01b0\u1ee3c.<\/p>\n T\u00e0i li\u1ec7u tham kh\u1ea3o ch\u00ednh<\/strong><\/p>\n 1. Nguy\u1ec5n Tr\u1ecdng Hi\u1ec7p (1980), Thi\u1ebft k\u1ebf chi ti\u1ebft m\u00e1y<\/em>, NXB \u0110\u1ea1i h\u1ecdc v\u00e0 Trung h\u1ecdc chuy\u00ean nghi\u1ec7p, H\u00e0 N\u1ed9i.<\/p>\n 2. X.M. L\u00f4- x\u00e9p (1960), Tu\u1ed1c bin h\u01a1i<\/em>, NXB C\u00f4ng nghi\u1ec7p, H\u00e0 N\u1ed9i.<\/p>\n 3. S\u1ed5 tay S\u1ee9c b\u1ec1n v\u1eadt li\u1ec7u (1960)<\/em>, NXB C\u00f4ng nghi\u1ec7p, H\u00e0 N\u1ed9i.<\/p>\n Summary<\/strong><\/p>\n In the production particle board, thermo-pressing machine is popularity, which is the last phase of the line determining productivity and quality of the product. Unlike those single machines, those of the production line should be synchronous and in compliance with the technological requirements as set in the project. The main parameters of the designed machines are calculated according to the technological requirements, from which dimension and components are computed, durability, stability and specific design are tested.<\/p>\n","protected":false},"excerpt":{"rendered":" K\u1ebft qu\u1ea3 Thi\u1ebft k\u1ebf ch\u1ebf t\u1ea1o và kh\u1ea3o nghi\u1ec7m máy ép ván d\u0103m 900 T\u1ea5n Nhu c\u1ea7u ván d\u0103m trên th\u1ecb tr\u01b0\u1eddng trong n\u01b0\u1edbc ngày càng cao, trong khi \u0111ó ván d\u0103m s\u1ea3n xu\u1ea5t trong n\u01b0\u1edbc chi\u1ebfm th\u1ecb ph\u1ea7n r\u1ea5t nh\u1ecf, ch\u1ee7 y\u1ebfu là ván nh\u1eadp kh\u1ea9u t\u1eeb các n\u01b0\u1edbc trong vùng. B\u1ed9 Nông nghi\u1ec7p & PTNT \u0111ã trình Chính ph\u1ee7 ch\u01b0\u01a1ng trình phát tri\u1ec3n ngành Ch\u1ebf bi\u1ebfn Lâm s\u1ea3n \u0111\u1ebfn n\u0103m 2010 trong \u0111ó s\u1ea3n xu\u1ea5t ván nhân t\u1ea1o t\u1eeb g\u1ed7 r\u1eebng tr\u1ed3ng chi\u1ebfm t\u1ef7 tr\u1ecdng l\u1edbn (kho\u1ea3ng 1.000.000 m3). Trong dây chuy\u1ec1n công ngh\u1ec7 s\u1ea3n xu\u1ea5t ván d\u0103m thì máy ép nhi\u1ec7t \u0111\u01a1n n\u1ea1p ván d\u1ecdc là m\u1ed9t thi\u1ebft b\u1ecb ch\u1ee7 ch\u1ed1t, ph\u1ea3i \u0111\u1ed3ng b\u1ed9 v\u1edbi các máy \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn theo yêu c\u1ea7u công ngh\u1ec7 c\u1ee7a toàn b\u1ed9 dây chuy\u1ec1n. Vì th\u1ebf m\u1ed9t s\u1ed1 thông s\u1ed1 chính c\u1ee7a máy \u0111\u01b0\u1ee3c xác \u0111\u1ecbnh tr\u01b0\u1edbc theo yêu c\u1ea7u c\u1ee7a \u0110\u1ec1 tài c\u1ea5p Nhà n\u01b0\u1edbc KC.07.10 mà không c\u1ea7n ph\u1ea3i nghiên c\u1ee9u tính toán, các thông s\u1ed1 k\u1ef9 thu\u1eadt c\u01a1 b\u1ea3n c\u1ee7a máy nh\u01b0 sau: <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8732"}],"collection":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/comments?post=8732"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8732\/revisions"}],"predecessor-version":[{"id":19099,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/posts\/8732\/revisions\/19099"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/media?parent=8732"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/categories?post=8732"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/vn\/wp-json\/wp\/v2\/tags?post=8732"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Nhu c\u1ea7u v\u00e1n d\u0103m tr\u00ean th\u1ecb tr\u01b0\u1eddng trong n\u01b0\u1edbc ng\u00e0y c\u00e0ng cao, trong khi \u0111\u00f3 v\u00e1n d\u0103m s\u1ea3n xu\u1ea5t trong n\u01b0\u1edbc chi\u1ebfm th\u1ecb ph\u1ea7n r\u1ea5t nh\u1ecf, ch\u1ee7 y\u1ebfu l\u00e0 v\u00e1n nh\u1eadp kh\u1ea9u t\u1eeb c\u00e1c n\u01b0\u1edbc trong v\u00f9ng. B\u1ed9 N\u00f4ng nghi\u1ec7p & PTNT \u0111\u00e3 tr\u00ecnh Ch\u00ednh ph\u1ee7 ch\u01b0\u01a1ng tr\u00ecnh ph\u00e1t tri\u1ec3n ng\u00e0nh Ch\u1ebf bi\u1ebfn L\u00e2m s\u1ea3n \u0111\u1ebfn n\u0103m 2010 trong \u0111\u00f3 s\u1ea3n xu\u1ea5t v\u00e1n nh\u00e2n t\u1ea1o t\u1eeb g\u1ed7 r\u1eebng tr\u1ed3ng chi\u1ebfm t\u1ef7 tr\u1ecdng l\u1edbn (kho\u1ea3ng 1.000.000 m3<\/sup>). Trong d\u00e2y chuy\u1ec1n c\u00f4ng ngh\u1ec7 s\u1ea3n xu\u1ea5t v\u00e1n d\u0103m th\u00ec m\u00e1y \u00e9p nhi\u1ec7t \u0111\u01a1n n\u1ea1p v\u00e1n d\u1ecdc l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb ch\u1ee7 ch\u1ed1t, ph\u1ea3i \u0111\u1ed3ng b\u1ed9 v\u1edbi c\u00e1c m\u00e1y \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn theo y\u00eau c\u1ea7u c\u00f4ng ngh\u1ec7 c\u1ee7a to\u00e0n b\u1ed9 d\u00e2y chuy\u1ec1n. V\u00ec th\u1ebf m\u1ed9t s\u1ed1 th\u00f4ng s\u1ed1 ch\u00ednh c\u1ee7a m\u00e1y \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc theo y\u00eau c\u1ea7u c\u1ee7a \u0110\u1ec1 t\u00e0i c\u1ea5p Nh\u00e0 n\u01b0\u1edbc KC.07.10 m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i nghi\u00ean c\u1ee9u t\u00ednh to\u00e1n,c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u01a1 b\u1ea3n c\u1ee7am\u00e1y nh\u01b0 sau:<\/em><\/h6>\n
1.3. L\u1ef1a ch\u1ecdn h\u1ec7 th\u1ed1ng v\u1eadn chuy\u1ec3n v\u00e1n ra v\u00e0o m\u00e1y \u00e9p<\/em><\/h5>\n