{"id":20300,"date":"2021-01-26T01:10:07","date_gmt":"2021-01-26T01:10:07","guid":{"rendered":"https:\/\/www.meetyoucarbide.com\/?p=20300"},"modified":"2021-02-03T00:55:36","modified_gmt":"2021-02-03T00:55:36","slug":"do-you-know-the-commonplace-6-mistakes-in-machanical-engineering","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/vi\/do-you-know-the-common-place-6-sai-lam-trong-co-che-ky-thuat\/","title":{"rendered":"B\u1ea1n c\u00f3 bi\u1ebft 6 sai l\u1ea7m ph\u1ed5 bi\u1ebfn trong k\u1ef9 thu\u1eadt Machanical"},"content":{"rendered":"

1 \u3001 Kh\u00f3a \u0111ai \u1ed1c \u0111\u00f4i<\/h2>
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Ren v\u00edt \u0111\u00f4i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ng\u0103n ch\u1eb7n s\u1ef1 l\u1ecfng l\u1ebbo. C\u1ea5u tr\u00fac th\u1ec3 hi\u1ec7n trong H\u00ecnh (a) kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p. C\u1ea5u tr\u00fac th\u1ec3 hi\u1ec7n trong H\u00ecnh (b) n\u00ean \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn. \u0110ai \u1ed1c ph\u1eb3ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf d\u01b0\u1edbi c\u00f9ng v\u00e0 \u0111ai \u1ed1c d\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf tr\u00ean c\u00f9ng. Tuy nhi\u00ean, do kh\u00f4ng th\u1ec3 s\u1eed d\u1ee5ng c\u1edd l\u00ea \u0111ai \u1ed1c d\u1eb9t \u1edf \u0111\u00e1y v\u00e0 kh\u00f4ng th\u1ec3 v\u1eb7n ch\u1eb7t, n\u00ean ch\u1ec9 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng hai \u0111ai \u1ed1c d\u00e0y, nh\u01b0 th\u1ec3 hi\u1ec7n trong H\u00ecnh (c).<\/p>


2 \u3001 Hai ch\u1ed1t ph\u1ea3i c\u00f3 \u0111\u1ed9 d\u00e0i kh\u00e1c nhau<\/h2>
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Vi\u1ec7c l\u1eafp r\u00e1p h\u1ed9p l\u1edbn th\u01b0\u1eddng c\u1ea7n \u0111\u1eb7t nhi\u1ec1u ch\u1ed1t \u0111\u1ecbnh v\u1ecb. Kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e9p \u0111\u1eb7t t\u1ea5t c\u1ea3 c\u00e1c ch\u00e2n \u0111\u1ecbnh v\u1ecb c\u00f3 c\u00f9ng chi\u1ec1u cao, nh\u01b0 trong h\u00ecnh a, v\u00ec r\u1ea5t kh\u00f3 \u0111\u1ec3 c\u0103n ch\u1ec9nh nhi\u1ec1u ch\u00e2n \u0111\u1ecbnh v\u1ecb c\u00f9ng m\u1ed9t l\u00fac. C\u00e1c ch\u1ed1t \u0111\u1ecbnh v\u1ecb n\u00ean \u0111\u01b0\u1ee3c l\u00e0m th\u00e0nh c\u00e1c \u0111\u1ed9 d\u00e0i kh\u00e1c nhau, nh\u01b0 trong H\u00ecnh B. Vi\u1ec7c c\u0103n ch\u1ec9nh m\u1ed9t ch\u1ed1t \u0111\u1ecbnh v\u1ecb tr\u01b0\u1edbc khi \u0111\u00f3ng h\u1ed9p s\u1ebd d\u1ec5 d\u00e0ng h\u01a1n.<\/p>


3 \u3001 Trong b\u1ed9 truy\u1ec1n b\u00e1nh r\u0103ng, c\u1ea5u h\u00ecnh ch\u00ednh x\u00e1c c\u1ee7a b\u00e1nh r\u0103ng l\u1edbn v\u00e0 nh\u1ecf<\/h2>
\"\"<\/figure>

\u0110\u1ec3 thu\u1eadn ti\u1ec7n cho vi\u1ec7c l\u1eafp \u0111\u1eb7t v\u00e0 tr\u00e1nh m\u00e0i m\u00f2n b\u01b0\u1edbc trong qu\u00e1 tr\u00ecnh ch\u1ea1y c\u1ee7a b\u00e1nh r\u0103ng, chi\u1ec1u r\u1ed9ng c\u1ee7a b\u00e1nh r\u0103ng ph\u1ea3i r\u1ed9ng h\u01a1n 5 ~ 10 mm so v\u1edbi b\u00e1nh r\u0103ng l\u1edbn, nh\u01b0 trong H\u00ecnh C. Tuy nhi\u00ean, n\u1ebfu b\u00e1nh r\u0103ng \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o b\u1eb1ng nh\u1ef1a, chi\u1ec1u r\u1ed9ng r\u0103ng c\u1ee7a b\u00e1nh r\u0103ng ph\u1ea3i nh\u1ecf h\u01a1n chi\u1ec1u r\u1ed9ng r\u0103ng c\u1ee7a b\u00e1nh r\u0103ng l\u1edbn, nh\u01b0 trong H\u00ecnh D, \u0111\u1ec3 tr\u00e1nh v\u1ebft l\u00f5m m\u00e0i tr\u00ean b\u00e1nh r\u0103ng.<\/p>


4 \u3001 K\u1ebft n\u1ed1i v\u00edt th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u00e1o r\u1eddi v\u00e0 l\u1eafp r\u00e1p<\/h2>
\"\"<\/figure>

K\u1ebft n\u1ed1i v\u00edt \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n trong H\u00ecnh a. \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a c\u00e1ch k\u1ebft n\u1ed1i n\u00e0y l\u00e0 tr\u1ee5c v\u00edt \u0111\u01b0\u1ee3c v\u1eb7n tr\u1ef1c ti\u1ebfp v\u00e0o l\u1ed7 ren \u0111\u1ec3 \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i m\u00e0 kh\u00f4ng c\u1ea7n \u0111ai \u1ed1c. C\u1ea5u tr\u00fac \u0111\u01a1n gi\u1ea3n v\u00e0 nh\u1ecf g\u1ecdn. N\u00f3 ph\u00f9 h\u1ee3p cho nh\u1eefng k\u1ebft c\u1ea5u kh\u00f4ng th\u1ec3 k\u1ebft n\u1ed1i b\u1eb1ng bu l\u00f4ng. K\u1ebft n\u1ed1i v\u00edt kh\u00f4ng n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p c\u00f3 l\u1ef1c l\u01b0\u1ee3ng khai th\u00e1c l\u1edbn ho\u1eb7c th\u01b0\u1eddng xuy\u00ean th\u00e1o r\u1eddi. N\u1ebfu n\u00f3 \u0111\u01b0\u1ee3c th\u00e1o r\u1eddi th\u01b0\u1eddng xuy\u00ean, ren s\u1ebd d\u1ec5 b\u1ecb m\u00f2n v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i c\u00f3 th\u1ec3 b\u1ecb x\u01b0\u1edbc, N\u1ebfu l\u1ed7 v\u00edt \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng th\u00e9p ho\u1eb7c th\u00e9p b\u1ec1 m\u1eb7t, H \u2248 D; n\u1ebfu l\u1ed7 v\u00edt b\u1eb1ng gang th\u00ec H = (1,25 ~ 1,5) d; n\u1ebfu l\u1ed7 v\u00edt \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng h\u1ee3p kim nh\u00f4m, H = (1,5 ~ 2,5) d, l\u1ed7 ren H1 = H + (2 ~ 2,5) P (P l\u00e0 b\u01b0\u1edbc ren) v\u00e0 chi\u1ec1u s\u00e2u khoan h2 = H1 + (0,5 ~ 1) d.<\/p>


5 \u3001 V\u00f2ng bi kh\u1edbp n\u1ed1i trung gian c\u1ee7a tr\u1ee5c t\u1ed1c \u0111\u1ed9 cao<\/h2>
\"\"<\/figure>

Khi kh\u1edbp n\u1ed1i \u0111\u01b0\u1ee3c l\u1eafp tr\u00ean h\u1ec7 th\u1ed1ng treo \u0111\u1ea7u tr\u1ee5c c\u00f3 v\u00f2ng quay l\u1edbn, k\u1ebft c\u1ea5u th\u1ec3 hi\u1ec7n trong H\u00ecnh A b\u1ecb c\u1ea5m. Chi\u1ec1u d\u00e0i c\u1ee7a c\u00f4ng x\u00f4n n\u00ean \u0111\u01b0\u1ee3c gi\u1ea3m b\u1edbt. C\u00f4ng x\u00f4n c\u00e0ng l\u1edbn th\u00ec \u0111\u1ed9 bi\u1ebfn d\u1ea1ng v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng kh\u00f4ng c\u00e2n b\u1eb1ng s\u1ebd c\u00e0ng l\u1edbn. V\u00ec v\u1eady, khi l\u1eafp kh\u1edbp n\u1ed1i v\u00e0o \u0111\u1ea7u c\u00f4ng x\u00f4n, ngo\u00e0i vi\u1ec7c \u1ee9ng su\u1ea5t c\u1ee7a th\u01b0\u1edbc \u0111\u1ec3 gi\u1ea3m tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a kh\u1edbp n\u1ed1i, th\u01b0\u1edbc c\u00f2n ph\u1ea3i s\u00e1t v\u00e0o \u1ed5 tr\u1ee5c.<\/p>


6, gia c\u00f4ng l\u1ed7 s\u00e2u c\u00f3 \u0111\u01b0\u1eddng k\u00ednh nh\u1ecf<\/h2>
\"\"<\/figure>

Kh\u00f3 x\u1eed l\u00fd l\u1ed7 s\u00e2u c\u00f3 \u0111\u01b0\u1eddng k\u00ednh nh\u1ecf, chi ph\u00ed cao v\u00e0 hi\u1ec7u qu\u1ea3 th\u1ea5p. C\u1ea5m thi\u1ebft k\u1ebf c\u00e1c l\u1ed7 b\u00f4i tr\u01a1n s\u00e2u v\u00e0 c\u00f3 \u0111\u01b0\u1eddng k\u00ednh nh\u1ecf tr\u00ean tr\u1ee5c quay, nh\u01b0 h\u00ecnh A. n\u1ebfu c\u00f3 th\u1ec3 th\u00ec m\u1edf c\u00e1c l\u1ed7 c\u00e0ng l\u1edbn c\u00e0ng t\u1ed1t. N\u1ebfu c\u1ea7n, t\u1ea1o c\u00e1c \u0111\u01b0\u1eddng k\u00ednh kh\u00e1c nhau nh\u01b0 trong H\u00ecnh B.<\/p><\/div>","protected":false},"excerpt":{"rendered":"

1\u3001 Double nut locking Double screw thread is used to prevent loosing. The structure shown in Fig. (a) is not allowed. The structure shown in Fig. (b) should be adopted. Flat nut is used at the bottom and thick nut is used at the top. However, considering that flat nut wrench can not be used…<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[92],"tags":[],"class_list":["post-20300","post","type-post","status-publish","format-standard","hentry","category-cutting-tools-weekly"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts\/20300","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/comments?post=20300"}],"version-history":[{"count":0,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/posts\/20300\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/media?parent=20300"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/categories?post=20300"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/vi\/wp-json\/wp\/v2\/tags?post=20300"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}