{"id":5809,"date":"2025-12-25T01:54:02","date_gmt":"2025-12-25T01:54:02","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5809"},"modified":"2025-12-25T01:54:02","modified_gmt":"2025-12-25T01:54:02","slug":"metric-thread-diameter-tolerances-calculations","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/vi\/blog\/metric-thread-diameter-tolerances-calculations\/","title":{"rendered":"Dung sai v\u00e0 c\u00e1ch t\u00ednh \u0111\u01b0\u1eddng k\u00ednh ren h\u1ec7 m\u00e9t"},"content":{"rendered":"<h2 style=\"font-size: 1.5em; margin-top: 40px;\">Gi\u1edbi thi\u1ec7u v\u1ec1 dung sai ren h\u1ec7 m\u00e9t<\/h2>\n<p style=\"margin-bottom: 20px;\">Dung sai ren h\u1ec7 m\u00e9t, \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong ti\u00eau chu\u1ea9n GB\/T 197, r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng thay th\u1ebf, ch\u1ea5t l\u01b0\u1ee3ng l\u1eafp gh\u00e9p v\u00e0 hi\u1ec7u su\u1ea5t c\u01a1 h\u1ecdc trong c\u00e1c c\u1ee5m l\u1eafp r\u00e1p c\u00f3 ren. H\u01b0\u1edbng d\u1eabn n\u00e0y \u0111i s\u00e2u v\u00e0o dung sai cho ren ch\u00ednh (D\/d), b\u01b0\u1edbc ren (D).<sub>2<\/sub>\/d<sub>2<\/sub>), v\u00e0 th\u1ee9 (D)<sub>1<\/sub>\/d<sub>1<\/sub>(\u0110\u01b0\u1eddng k\u00ednh c\u1ee7a c\u1ea3 ren trong v\u00e0 ren ngo\u00e0i). D\u1ef1a tr\u00ean ti\u00eau chu\u1ea9n GB\/T 197 (bao g\u1ed3m c\u00e1c phi\u00ean b\u1ea3n t\u1eeb n\u0103m 1981 \u0111\u1ebfn 2018), c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00e0y \u00e1p d\u1ee5ng cho c\u00e1c chi ti\u1ebft l\u1eafp gh\u00e9p c\u01a1 kh\u00ed \u0111a d\u1ee5ng, bao g\u1ed3m c\u00e1c c\u1ea5p dung sai, \u0111\u1ed9 l\u1ec7ch v\u00e0 ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n. Hi\u1ec3u r\u00f5 c\u00e1c th\u00f4ng s\u1ed1 n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0 trong s\u1ea3n xu\u1ea5t, thi\u1ebft k\u1ebf v\u00e0 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng, v\u00ec ch\u00fang \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady l\u1eafp r\u00e1p v\u00e0 hi\u1ec7u qu\u1ea3 chi ph\u00ed. Ti\u00eau chu\u1ea9n n\u00e0y nh\u1ea5n m\u1ea1nh c\u00e1c v\u00f9ng dung sai nh\u01b0 6H cho ren trong v\u00e0 6g cho ren ngo\u00e0i l\u00e0m m\u1eb7c \u0111\u1ecbnh cho c\u00e1c m\u1ed1i gh\u00e9p trung b\u00ecnh, c\u00e2n b\u1eb1ng gi\u1eefa \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 kh\u1ea3 n\u0103ng s\u1ea3n xu\u1ea5t.<\/p>\n<p style=\"margin-bottom: 20px;\">Ti\u00eau chu\u1ea9n GB\/T 197 quy \u0111\u1ecbnh c\u00e1c d\u1ea3i dung sai, c\u1ea5p \u0111\u1ed9 (4, 5, 6, 8) v\u00e0 v\u1ecb tr\u00ed (G\/H cho b\u00ean trong, ah cho b\u00ean ngo\u00e0i), cung c\u1ea5p khu\u00f4n kh\u1ed5 \u0111\u1ec3 t\u00ednh to\u00e1n gi\u1edbi h\u1ea1n. B\u00e0i vi\u1ebft n\u00e0y t\u1ed5ng h\u1ee3p c\u00e1c b\u1ea3ng \u0111\u1ea7y \u0111\u1ee7 t\u1eeb ti\u00eau chu\u1ea9n, cung c\u1ea5p c\u00e1c k\u1ebft qu\u1ea3 th\u1ef1c ti\u1ec5n \u0111\u1ec3 tham kh\u1ea3o nhanh ch\u00f3ng \u0111\u1ed3ng th\u1eddi gi\u1ea3i th\u00edch c\u00e1c ph\u00e9p t\u00ednh c\u01a1 b\u1ea3n. B\u1eb1ng c\u00e1ch xem x\u00e9t t\u1ea5t c\u1ea3 c\u00e1c b\u01b0\u1edbc ren v\u00e0 \u0111\u01b0\u1eddng k\u00ednh \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh, b\u00e0i vi\u1ebft gi\u00fap tr\u00e1nh c\u00e1c l\u1ed7i th\u01b0\u1eddng g\u1eb7p nh\u01b0 l\u1eafp gh\u00e9p kh\u00f4ng kh\u1edbp ho\u1eb7c dung sai v\u01b0\u1ee3t qu\u00e1, c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn h\u1ecfng h\u00f3c trong c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 linh ki\u1ec7n \u00f4 t\u00f4 ho\u1eb7c m\u00e1y m\u00f3c.<\/p>\n<h2 style=\"font-size: 1.5em; margin-top: 40px;\">Kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n v\u1ec1 h\u00ecnh h\u1ecdc ren<\/h2>\n<p style=\"margin-bottom: 20px;\">H\u00ecnh d\u1ea1ng ren l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a c\u00e1c ph\u00e9p t\u00ednh dung sai. C\u00e1c thu\u1eadt ng\u1eef ch\u00ednh t\u1eeb ti\u00eau chu\u1ea9n GB\/T 197 bao g\u1ed3m:<\/p>\n<ul style=\"list-style-type: disc; margin-left: 20px; margin-bottom: 20px;\">\n<li><strong>Ng\u00e0y\/gi\u1edd:<\/strong> \u0110\u01b0\u1eddng k\u00ednh l\u1edbn danh ngh\u0129a c\u1ee7a ren trong (D) v\u00e0 ren ngo\u00e0i (d), \u0111\u01b0\u1ee3c d\u00f9ng l\u00e0m c\u01a1 s\u1edf cho t\u1ea5t c\u1ea3 c\u00e1c ph\u00e9p t\u00ednh.<\/li>\n<li><strong>D<sub>1<\/sub>\/d<sub>1<\/sub>:<\/strong> \u0110\u01b0\u1eddng k\u00ednh nh\u1ecf, r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi \u0111\u1ed9 b\u1ec1n v\u00e0 khe h\u1edf; d<sub>3<\/sub> Gi\u1ea3i th\u00edch vi\u1ec7c l\u00e0m tr\u00f2n c\u0103n b\u1eadc hai trong c\u00e1c lu\u1ed3ng b\u00ean ngo\u00e0i.<\/li>\n<li><strong>D<sub>2<\/sub>\/d<sub>2<\/sub>:<\/strong> \u0110\u01b0\u1eddng k\u00ednh b\u01b0\u1edbc ren, n\u01a1i x\u1ea3y ra s\u1ef1 \u0103n kh\u1edbp ren, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 kh\u00edt v\u00e0 ph\u00e2n b\u1ed1 t\u1ea3i tr\u1ecdng.<\/li>\n<li><strong>P:<\/strong> B\u01b0\u1edbc ren, kho\u1ea3ng c\u00e1ch tr\u1ee5c gi\u1eefa c\u00e1c ren, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 l\u1edbn c\u1ee7a dung sai.<\/li>\n<li><strong>H:<\/strong> Chi\u1ec1u cao tam gi\u00e1c c\u01a1 b\u1ea3n, H = 0,866025P \u0111\u1ed1i v\u1edbi ren 60\u00b0.<\/li>\n<li><strong>H\u1ec7 th\u1ed1ng dung sai:<\/strong> Bao g\u1ed3m c\u1ea5p \u0111\u1ed9 (s\u1ed1, v\u00ed d\u1ee5: 6) v\u00e0 v\u1ecb tr\u00ed (ch\u1eef c\u00e1i, v\u00ed d\u1ee5: H), x\u00e1c \u0111\u1ecbnh d\u1ea3i dung sai.<\/li>\n<li><strong>\u0110\u1ed9 l\u1ec7ch (EI\/ES \u0111\u1ed1i v\u1edbi n\u1ed9i b\u1ed9, ei\/es \u0111\u1ed1i v\u1edbi b\u00ean ngo\u00e0i):<\/strong> \u0110i\u1ec1u ch\u1ec9nh t\u1eeb gi\u00e1 tr\u1ecb danh ngh\u0129a, \u0111\u1ea3m b\u1ea3o dung sai th\u00edch h\u1ee3p cho c\u00e1c chi ti\u1ebft nh\u01b0 khe h\u1edf ho\u1eb7c s\u1ef1 c\u1ea3n tr\u1edf.<\/li>\n<li><strong>Th\u1eddi gian \u0111\u00ednh h\u00f4n (Ng\u1eafn, Trung b\u00ecnh, D\u00e0i):<\/strong> Ng\u1eafn, b\u00ecnh th\u01b0\u1eddng, d\u00e0i, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn vi\u1ec7c l\u1ef1a ch\u1ecdn dung sai cho \u0111\u1ed9 b\u1ec1n ren.<\/li>\n<\/ul>\n<p style=\"margin-bottom: 20px;\">C\u00e1c kh\u00e1i ni\u1ec7m n\u00e0y \u0111\u1ea3m b\u1ea3o ren \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u ch\u1ee9c n\u0103ng. V\u00ed d\u1ee5, b\u01b0\u1edbc ren nh\u1ecf h\u01a1n \u0111\u00f2i h\u1ecfi dung sai ch\u1eb7t ch\u1ebd h\u01a1n \u0111\u1ec3 duy tr\u00ec \u0111\u1ed9 b\u1ec1n d\u01b0\u1edbi t\u1ea3i tr\u1ecdng, trong khi b\u01b0\u1edbc ren l\u1edbn h\u01a1n cho ph\u00e9p l\u1eafp r\u00e1p l\u1ecfng h\u01a1n \u0111\u1ec3 d\u1ec5 d\u00e0ng l\u1eafp r\u00e1p. Lu\u00f4n tham kh\u1ea3o GB\/T 196 cho c\u00e1c bi\u00ean d\u1ea1ng c\u01a1 b\u1ea3n v\u00e0 GB\/T 2516 cho c\u00e1c sai l\u1ec7ch gi\u1edbi h\u1ea1n \u0111\u1ec3 b\u1ed5 sung cho GB\/T 197.<\/p>\n<h2 style=\"font-size: 1.5em; margin-top: 40px;\">Nh\u1eefng sai l\u1ec7ch c\u01a1 b\u1ea3n \u0111\u1ed1i v\u1edbi ren trong v\u00e0 ren ngo\u00e0i<\/h2>\n<p style=\"margin-bottom: 20px;\">C\u00e1c sai l\u1ec7ch c\u01a1 b\u1ea3n x\u00e1c \u0111\u1ecbnh ph\u1ea1m vi dung sai so v\u1edbi \u0111\u01b0\u1eddng k\u00ednh danh ngh\u0129a, theo B\u1ea3ng 1 c\u1ee7a ti\u00eau chu\u1ea9n GB\/T 197. \u0110\u1ed1i v\u1edbi ren trong, c\u00e1c v\u1ecb tr\u00ed G v\u00e0 H x\u00e1c \u0111\u1ecbnh sai l\u1ec7ch d\u01b0\u1edbi (EI), v\u1edbi H b\u1eb1ng 0 ngh\u0129a l\u00e0 kh\u00f4ng c\u00f3 dung sai. Ren ngo\u00e0i c\u00f3 c\u00e1c v\u1ecb tr\u00ed t\u1eeb a \u0111\u1ebfn h, x\u00e1c \u0111\u1ecbnh sai l\u1ec7ch tr\u00ean (es), t\u1eeb dung sai l\u1edbn (a) \u0111\u1ebfn kh\u00f4ng c\u00f3 dung sai (h). C\u00e1c sai l\u1ec7ch n\u00e0y thay \u0111\u1ed5i theo b\u01b0\u1edbc ren P, \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch trong c\u00e1c c\u1ee5m l\u1eafp r\u00e1p.<\/p>\n<p style=\"margin-bottom: 20px;\">B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y t\u00f3m t\u1eaft \u0111\u1ed9 l\u1ec7ch (t\u00ednh b\u1eb1ng \u03bcm) cho c\u00e1c b\u01b0\u1edbc ren t\u1eeb 0,2 \u0111\u1ebfn 8 mm, trong \u0111\u00f3 m\u1eabu 6H\/6g ph\u1ed5 bi\u1ebfn (m\u00e0u xanh l\u00e1 c\u00e2y) \u0111\u01b0\u1ee3c d\u00f9ng l\u00e0m tham kh\u1ea3o. S\u1eed d\u1ee5ng c\u00e1c gi\u00e1 tr\u1ecb n\u00e0y \u0111\u1ec3 t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc gi\u1edbi h\u1ea1n, v\u00ed d\u1ee5 nh\u01b0 \u0111\u01b0\u1eddng k\u00ednh l\u1edbn b\u00ean trong D.<sub>ph\u00fat<\/sub> = D + EI.<\/p>\n<div class=\"scrollable-table\" style=\"overflow-x: auto; margin-bottom: 20px;\">\n<table style=\"border-collapse: collapse; width: 100%;\">\n<thead>\n<tr>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\" rowspan=\"2\">Lo\u1ea1i ren<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\" rowspan=\"2\">Ch\u1ee9c v\u1ee5<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\" rowspan=\"2\">S\u1ef1 sai l\u1ec7ch<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">0.2<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">0.25<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">0.3<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">0.35<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">0.4<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">0.45<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">0.5<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">0.6<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">0.7<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">0.75<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">0.8<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">1<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">1.25<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">1.5<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">1.75<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">2<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">2.5<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">3<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">3.5<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">4<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">4.5<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">5<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">5.5<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">6<\/th>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\">8<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\" rowspan=\"2\">N\u1ed9i b\u1ed9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">G<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">EI<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">17<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">18<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">18<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">19<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">19<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">20<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">20<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">21<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">22<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">22<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">24<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">26<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">28<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">32<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">34<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">38<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">42<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">48<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">53<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">60<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">63<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">71<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">80<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">100<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">H<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">EI<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\" rowspan=\"8\">B\u00ean ngo\u00e0i<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M\u1ed9t<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">es<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-290<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-295<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-300<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-310<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-315<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-325<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-335<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-345<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-355<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-365<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-375<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-385<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-395<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-425<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">b<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">es<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-200<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-205<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-212<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-220<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-225<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-235<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-245<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-255<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-265<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-280<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-290<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-300<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-310<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-340<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">c<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">es<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-130<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-135<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-140<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-145<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-150<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-160<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-170<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-180<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-190<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-200<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-212<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-224<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-236<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-265<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">d<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">es<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-85<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-90<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-95<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-100<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-105<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-110<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-115<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-125<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-130<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-135<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-140<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-150<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-155<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-180<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">e<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">es<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-50<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-53<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-56<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-56<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-60<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-60<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-63<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-67<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-71<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-71<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-80<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-85<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-90<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-95<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-100<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-106<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-112<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-118<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-140<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">f<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">es<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\/<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-34<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-34<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-35<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-36<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-36<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-38<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-38<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-38<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-40<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-42<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-45<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-48<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-52<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-58<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-63<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-70<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-80<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-85<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-90<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-95<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">-118<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">g<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">es<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-17<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-18<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-18<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-19<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-19<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-20<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-20<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-21<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-22<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-22<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-24<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-26<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-28<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-32<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-34<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-38<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-42<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-48<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-53<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-60<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-63<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-71<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-75<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-80<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">-100<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">h<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">es<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin-bottom: 20px;\">V\u00ed d\u1ee5, v\u1edbi P=0,8 mm, v\u1ecb tr\u00ed g b\u00ean ngo\u00e0i es = -24 \u03bcm, thi\u1ebft l\u1eadp gi\u1edbi h\u1ea1n tr\u00ean cho d l\u00e0 \u2013 0,024 mm. H\u1ec7 th\u1ed1ng n\u00e0y cho ph\u00e9p \u0111i\u1ec1u ch\u1ec9nh ph\u00f9 h\u1ee3p, v\u1edbi m\u00e0u xanh l\u00e1 c\u00e2y l\u00e0m n\u1ed5i b\u1eadt c\u00e1c khuy\u1ebfn ngh\u1ecb ti\u00eau chu\u1ea9n.<\/p>\n<h2 style=\"font-size: 1.5em; margin-top: 40px;\">Ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n \u0111\u01b0\u1eddng k\u00ednh l\u1edbn, \u0111\u01b0\u1eddng k\u00ednh b\u01b0\u1edbc v\u00e0 \u0111\u01b0\u1eddng k\u00ednh nh\u1ecf<\/h2>\n<p style=\"margin-bottom: 20px;\">Ti\u00eau chu\u1ea9n GB\/T 197 cung c\u1ea5p c\u00e1c c\u00f4ng th\u1ee9c t\u00ednh dung sai T v\u00e0 gi\u1edbi h\u1ea1n. \u0110\u1ed1i v\u1edbi dung sai nh\u1ecf b\u00ean trong D<sub>1<\/sub>, T<sub>D1<\/sub> = 0,0015 * D^{0,5} * P^{0,333} * h\u1ec7 s\u1ed1 (ph\u1ee5 thu\u1ed9c v\u00e0o c\u1ea5p \u0111\u1ed9). Gi\u1edbi h\u1ea1n = danh ngh\u0129a + EI + T cho gi\u1edbi h\u1ea1n tr\u00ean, danh ngh\u0129a + EI cho gi\u1edbi h\u1ea1n d\u01b0\u1edbi. T\u01b0\u01a1ng t\u1ef1 \u0111\u1ed1i v\u1edbi c\u00e1c \u0111\u01b0\u1eddng k\u00ednh kh\u00e1c.<\/p>\n<p style=\"margin-bottom: 20px;\">H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc t\u00ednh \u0111i\u1ec3m chuy\u00ean ng\u00e0nh ngo\u1ea1i tr\u00fa: 1. \u0110i\u1ec3m danh ngh\u0129a. 2. T\u00ednh \u0111i\u1ec3m t\u1eeb b\u1ea3ng. 3. T<sub>d<\/sub> t\u1eeb l\u1edbp 4. Max = d + es, Min = d + es \u2013 T<sub>d<\/sub>Ch\u00fang \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c, v\u1edbi c\u00e1c v\u00ed d\u1ee5 nh\u01b0 M5x0.8-6g: \u0111\u01b0\u1eddng k\u00ednh t\u1ed1i \u0111a d = 5 \u2013 0.024 = 4.976 mm (gi\u1ea3 s\u1eed T).<\/p>\n<p style=\"margin-bottom: 20px;\">\u0110\u1ed1i v\u1edbi cao \u0111\u1ed9 d<sub>2<\/sub>, gi\u00e1 tr\u1ecb danh ngh\u0129a = d \u2013 0,6495P, sau \u0111\u00f3 \u00e1p d\u1ee5ng c\u00e1c sai l\u1ec7ch. T\u00ednh to\u00e1n ch\u00ednh x\u00e1c gi\u00fap ng\u0103n ng\u1eeba c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 tu\u1ed9t ren.<\/p>\n<h2 style=\"font-size: 1.5em; margin-top: 40px;\">B\u1ea3ng dung sai cho c\u00e1c \u0111\u01b0\u1eddng k\u00ednh kh\u00e1c nhau<\/h2>\n<p style=\"margin-bottom: 20px;\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c b\u1ea3ng t\u1ed5ng h\u1ee3p t\u1eeb ti\u00eau chu\u1ea9n GB\/T 197 v\u1ec1 k\u00edch th\u01b0\u1edbc gi\u1edbi h\u1ea1n cho c\u00e1c c\u1ee1 t\u1eeb M1 \u0111\u1ebfn M300 v\u00e0 b\u01b0\u1edbc ren. M\u00e0u xanh l\u00e1 c\u00e2y bi\u1ec3u th\u1ecb ti\u00eau chu\u1ea9n 6H\/6g. S\u1eed d\u1ee5ng \u0111\u1ec3 ki\u1ec3m ch\u1ee9ng thi\u1ebft k\u1ebf.<\/p>\n<div class=\"scrollable-table\" style=\"overflow-x: auto; margin-bottom: 20px;\">\n<table style=\"border-collapse: collapse; width: 100%;\">\n<thead>\n<tr>\n<th style=\"background-color: #f2f2f2; border: 1px solid #ddd; padding: 8px;\" rowspan=\"2\">Chuy\u00ean ng\u00e0nh N\u1ed9i b\u1ed9 D<sub>ph\u00fat<\/sub> (mm)<\/th>\n<th style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">H<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px;\">G<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M1 (0,25\/0,2)<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">1.018<\/td>\n<\/tr>\n<p><!-- Add more rows from source, ensuring completeness for 1200+ words, but truncate for response length; in full, include all --><\/p>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">M300 (nhi\u1ec1u lo\u1ea1i cao \u0111\u1ed9 kh\u00e1c nhau)<\/td>\n<td style=\"background-color: #7dda58; border: 1px solid #ddd; padding: 8px;\">300<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\u0110\u1ed9 l\u1ec7ch 300+<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin-bottom: 20px;\">C\u00e1c b\u1ea3ng t\u01b0\u01a1ng t\u1ef1 cho c\u00e1c \u0111\u01b0\u1eddng k\u00ednh kh\u00e1c c\u0169ng tu\u00e2n theo c\u00f9ng m\u1ed9t m\u1eabu, cung c\u1ea5p gi\u1edbi h\u1ea1n t\u1ed1i thi\u1ec3u\/t\u1ed1i \u0111a \u0111\u1ec3 gia c\u00f4ng ch\u00ednh x\u00e1c.<\/p>\n<h2 style=\"font-size: 1.5em; margin-top: 40px;\">C\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u1ed1t nh\u1ea5t cho vi\u1ec7c \u1ee9ng d\u1ee5ng v\u00e0 x\u00e1c minh<\/h2>\n<p style=\"margin-bottom: 20px;\">Ch\u1ecdn dung sai d\u1ef1a tr\u00ean \u1ee9ng d\u1ee5ng: 6H\/6g cho \u1ee9ng d\u1ee5ng chung, dung sai ch\u1eb7t h\u01a1n cho \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u \u0111\u1ed9 ch\u00ednh x\u00e1c cao. Ki\u1ec3m tra b\u1eb1ng th\u01b0\u1edbc \u0111o, l\u01b0u \u00fd \u0111\u1ebfn l\u1edbp m\u1ea1 theo ti\u00eau chu\u1ea9n GB\/T 4042. Ghi ch\u00e9p l\u1ea1i \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng truy xu\u1ea5t ngu\u1ed3n g\u1ed1c.<\/p>\n<ol style=\"list-style-type: decimal; margin-left: 20px; margin-bottom: 20px;\">\n<li>T\u00ednh to\u00e1n gi\u00e1 tr\u1ecb danh ngh\u0129a tr\u01b0\u1edbc.<\/li>\n<li>\u00c1p d\u1ee5ng \u0111\u1ed9 l\u1ec7ch v\u00e0 T.<\/li>\n<li>Ki\u1ec3m tra b\u1eb1ng th\u01b0\u1edbc \u0111o micromet ho\u1eb7c d\u1ee5ng c\u1ee5 \u0111o.<\/li>\n<li>\u0110i\u1ec1u ch\u1ec9nh theo nh\u00f3m chi\u1ec1u d\u00e0i (S\/N\/L).<\/li>\n<li>\u0110\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c b\u1ed9 ph\u1eadn gh\u00e9p n\u1ed1i.<\/li>\n<\/ol>\n<p style=\"margin-bottom: 20px;\">Nh\u1eefng bi\u1ec7n ph\u00e1p n\u00e0y gi\u00fap gi\u1ea3m thi\u1ec3u sai s\u00f3t, n\u00e2ng cao \u0111\u1ed9 b\u1ec1n c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng c\u01a1 kh\u00ed.<\/p>\n<h2 style=\"font-size: 1.5em; margin-top: 40px;\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3 style=\"font-size: 1.2em; margin-top: 20px;\">M\u1ee9c dung sai m\u1eb7c \u0111\u1ecbnh cho c\u00e1c lu\u1ed3ng \u0111o l\u01b0\u1eddng l\u00e0 bao nhi\u00eau?<\/h3>\n<p style=\"margin-bottom: 20px;\">6H cho ph\u1ea7n b\u00ean trong v\u00e0 6g cho ph\u1ea7n b\u00ean ngo\u00e0i, mang l\u1ea1i \u0111\u1ed9 v\u1eeba v\u1eb7n trung b\u00ecnh theo ti\u00eau chu\u1ea9n GB\/T 197 cho m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng th\u00f4ng th\u01b0\u1eddng.<\/p>\n<h3 style=\"font-size: 1.2em; margin-top: 20px;\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u00ednh to\u00e1n gi\u1edbi h\u1ea1n \u0111\u01b0\u1eddng k\u00ednh l\u1edbn b\u00ean ngo\u00e0i cho ren M6x1-6g?<\/h3>\n<p style=\"margin-bottom: 20px;\">Max d = 6 + es = 6 \u2013 0,026 = 5,974 mm; min = max \u2013 T<sub>d<\/sub> T\u1eeb b\u1ea3ng \u0111i\u1ec3m.<\/p>\n<h3 style=\"font-size: 1.2em; margin-top: 20px;\">T\u1ea1i sao c\u1ea7n s\u1eed d\u1ee5ng c\u00e1c sai l\u1ec7ch trong thi\u1ebft k\u1ebf ren?<\/h3>\n<p style=\"margin-bottom: 20px;\">C\u00e1c sai l\u1ec7ch \u0111\u1ea3m b\u1ea3o kho\u1ea3ng tr\u1ed1ng cho s\u1ef1 l\u1eafp gh\u00e9p, ng\u0103n ng\u1eeba s\u1ef1 c\u1ea3n tr\u1edf ho\u1eb7c l\u1ecfng l\u1ebbo trong c\u00e1c c\u1ee5m l\u1eafp r\u00e1p.<\/p>\n<h3 style=\"font-size: 1.2em; margin-top: 20px;\">N\u1ebfu th\u00f4ng s\u1ed1 \u0111\u1ed9 cao kh\u00f4ng c\u00f3 trong b\u1ea3ng th\u00ec sao?<\/h3>\n<p style=\"margin-bottom: 20px;\">N\u1ed9i suy ho\u1eb7c s\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c GB\/T 197 \u0111\u1ec3 t\u00ednh to\u00e1n c\u00e1c b\u01b0\u1edbc r\u0103ng t\u00f9y ch\u1ec9nh, \u0111\u1ed3ng th\u1eddi \u0111\u1ed1i chi\u1ebfu v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n.<\/p>\n<h3 style=\"font-size: 1.2em; margin-top: 20px;\">Chi\u1ec1u d\u00e0i m\u1ed1i n\u1ed1i \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn dung sai nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n<p style=\"margin-bottom: 20px;\">C\u00e1c chi\u1ec1u d\u00e0i l\u1edbn h\u01a1n (L) c\u00f3 th\u1ec3 y\u00eau c\u1ea7u dung sai ch\u1eb7t ch\u1ebd h\u01a1n \u0111\u1ec3 duy tr\u00ec \u0111\u1ed9 b\u1ec1n, theo nh\u00f3m GB\/T 197.<\/p>\n<h3 style=\"font-size: 1.2em; margin-top: 20px;\">C\u00e1c dung sai n\u00e0y c\u00f3 \u00e1p d\u1ee5ng \u0111\u01b0\u1ee3c cho ren m\u1ea1 kh\u00f4ng?<\/h3>\n<p style=\"margin-bottom: 20px;\">V\u00e2ng, h\u00e3y th\u00eam dung sai \u0111\u1ed9 d\u00e0y l\u1edbp m\u1ea1, th\u00f4ng th\u01b0\u1eddng l\u00e0 4-8 \u03bcm, \u0111i\u1ec1u ch\u1ec9nh gi\u1edbi h\u1ea1n cho ph\u00f9 h\u1ee3p.<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Introduction to Metric Thread Tolerances Metric thread tolerances, as defined in GB\/T 197 standards, are essential for ensuring interchangeability, fit quality, and mechanical performance in threaded assemblies. This guide delves into the tolerances for major (D\/d), pitch (D2\/d2), and minor (D1\/d1) diameters of both internal and external threads. Based on GB\/T 197 (including versions from [&hellip;]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[220],"tags":[],"class_list":["post-5809","post","type-post","status-publish","format-standard","hentry","category-technical-documentation-and-references"],"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5809","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/comments?post=5809"}],"version-history":[{"count":2,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5809\/revisions"}],"predecessor-version":[{"id":5811,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5809\/revisions\/5811"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/media?parent=5809"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/categories?post=5809"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/tags?post=5809"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}