{"id":5593,"date":"2025-12-22T08:53:41","date_gmt":"2025-12-22T08:53:41","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5593"},"modified":"2025-12-22T09:11:38","modified_gmt":"2025-12-22T09:11:38","slug":"iso-7047-2011-cross-recess-raised-countersunk-screws","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/vi\/blog\/iso-7047-2011-cross-recess-raised-countersunk-screws\/","title":{"rendered":"ISO 7047-2011 V\u00edt ch\u00ecm c\u00f3 r\u00e3nh ch\u1eef th\u1eadp"},"content":{"rendered":"
\n

ISO 7047-2011 V\u00edt ch\u00ecm c\u00f3 r\u00e3nh ch\u1eef th\u1eadp<\/h1>\n
\n

Gi\u1edbi thi\u1ec7u<\/h2>\n

Ti\u00eau chu\u1ea9n ISO 7047-2011 quy \u0111\u1ecbnh c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt cho v\u00edt \u0111\u1ea7u ch\u00ecm c\u00f3 r\u00e3nh ch\u1eef th\u1eadp, l\u00e0 lo\u1ea1i \u1ed1c v\u00edt thi\u1ebft y\u1ebfu trong nhi\u1ec1u \u1ee9ng d\u1ee5ng c\u01a1 kh\u00ed v\u00e0 k\u1ef9 thu\u1eadt. Lo\u1ea1i v\u00edt n\u00e0y, \u0111\u1eb7c tr\u01b0ng b\u1edfi g\u00f3c ch\u00ecm 90 \u0111\u1ed9 v\u00e0 r\u00e3nh ch\u1eef th\u1eadp ki\u1ec3u Phillips, t\u1ea1o ra b\u1ec1 m\u1eb7t l\u1eafp \u0111\u1eb7t ph\u1eb3ng ho\u1eb7c h\u01a1i nh\u00f4 l\u00ean, n\u00e2ng cao c\u1ea3 t\u00ednh th\u1ea9m m\u1ef9 v\u00e0 hi\u1ec7u su\u1ea5t ch\u1ee9c n\u0103ng trong c\u00e1c c\u1ee5m l\u1eafp r\u00e1p. L\u00e0 m\u1ed9t chuy\u00ean gia v\u1ec1 v\u1eadt li\u1ec7u c\u01a1 kh\u00ed v\u1edbi kinh nghi\u1ec7m s\u00e2u r\u1ed9ng, t\u00f4i nh\u1ea5n m\u1ea1nh t\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf nh\u01b0 ISO 7047 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh t\u01b0\u01a1ng th\u00edch, \u0111\u1ed9 tin c\u1eady v\u00e0 an to\u00e0n trong c\u00e1c quy tr\u00ecnh s\u1ea3n xu\u1ea5t.<\/p>\n

Ti\u00eau chu\u1ea9n n\u00e0y, do T\u1ed5 ch\u1ee9c Ti\u00eau chu\u1ea9n h\u00f3a Qu\u1ed1c t\u1ebf (ISO) ban h\u00e0nh, quy \u0111\u1ecbnh c\u00e1c y\u00eau c\u1ea7u v\u1ec1 k\u00edch th\u01b0\u1edbc, c\u01a1 kh\u00ed v\u00e0 v\u1eadt li\u1ec7u cho c\u00e1c lo\u1ea1i v\u00edt n\u00e0y, bao g\u1ed3m c\u00e1c c\u1ee1 ren t\u1eeb M1.6 \u0111\u1ebfn M10. Ti\u00eau chu\u1ea9n n\u00e0y r\u1ea5t quan tr\u1ecdng trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u01b0 \u00f4 t\u00f4, h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, \u0111i\u1ec7n t\u1eed v\u00e0 m\u00e1y m\u00f3c n\u00f3i chung, n\u01a1i y\u00eau c\u1ea7u s\u1ef1 si\u1ebft ch\u1eb7t ch\u00ednh x\u00e1c \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c t\u1ea3i tr\u1ecdng rung \u0111\u1ed9ng v\u00e0 c\u00e1c t\u00e1c \u0111\u1ed9ng t\u1eeb m\u00f4i tr\u01b0\u1eddng. Ti\u00eau chu\u1ea9n n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c v\u00edt \u0111\u00e1p \u1ee9ng dung sai c\u1ea5p s\u1ea3n ph\u1ea9m A, th\u00fac \u0111\u1ea9y kh\u1ea3 n\u0103ng thay th\u1ebf l\u1eabn nhau trong chu\u1ed7i cung \u1ee9ng to\u00e0n c\u1ea7u.<\/p>\n

V\u00ed d\u1ee5, trong c\u00e1c \u1ee9ng d\u1ee5ng h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5, thi\u1ebft k\u1ebf l\u1ed7 ch\u00ecm ch\u00ednh x\u00e1c gi\u00fap duy tr\u00ec b\u1ec1 m\u1eb7t kh\u00ed \u0111\u1ed9ng h\u1ecdc, trong khi \u1edf l\u0129nh v\u1ef1c \u0111i\u1ec7n t\u1eed, n\u00f3 \u0111\u1ea3m b\u1ea3o vi\u1ec7c l\u1eafp \u0111\u1eb7t ch\u1eafc ch\u1eafn m\u00e0 kh\u00f4ng l\u00e0m h\u1ecfng c\u00e1c linh ki\u1ec7n nh\u1ea1y c\u1ea3m. Ti\u00eau chu\u1ea9n n\u00e0y c\u0169ng \u0111\u1ec1 c\u1eadp \u0111\u1ebfn c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng, ch\u1eb3ng h\u1ea1n nh\u01b0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n th\u00f4ng qua c\u00e1c lo\u1ea1i th\u00e9p kh\u00f4ng g\u1ec9 \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh. Nh\u00ecn chung, ISO 7047-2011 \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t trong vi\u1ec7c th\u00fac \u0111\u1ea9y k\u1ef9 thu\u1eadt c\u01a1 kh\u00ed b\u1eb1ng c\u00e1ch cung c\u1ea5p m\u1ed9t ti\u00eau chu\u1ea9n \u0111\u00e1ng tin c\u1eady cho thi\u1ebft k\u1ebf v\u00e0 s\u1ea3n xu\u1ea5t \u1ed1c v\u00edt.<\/p>\n

\n

Th\u00f4ng s\u1ed1 k\u00edch th\u01b0\u1edbc v\u00e0 h\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng<\/h2>\n

Ti\u00eau chu\u1ea9n n\u00e0y m\u00f4 t\u1ea3 chi ti\u1ebft quy tr\u00ecnh v\u1eadn h\u00e0nh to\u00e0n di\u1ec7n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 s\u1eed d\u1ee5ng c\u00e1c lo\u1ea1i v\u00edt n\u00e0y, b\u1eaft \u0111\u1ea7u t\u1eeb vi\u1ec7c l\u1ef1a ch\u1ecdn d\u1ef1a tr\u00ean k\u00edch th\u01b0\u1edbc ren cho \u0111\u1ebfn qu\u00e1 tr\u00ecnh l\u1eafp \u0111\u1eb7t.<\/p>\n

K\u00edch th\u01b0\u1edbc ren v\u00e0 \u0111\u1ea7u<\/strong><\/p>\n

\u1ed0c v\u00edt \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng, v\u1edbi k\u00edch th\u01b0\u1edbc t\u00ednh b\u1eb1ng mm. B\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00eau r\u00f5 c\u00e1c th\u00f4ng s\u1ed1 \u0111\u1ec3 \u0111\u1ea1t hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
K\u00edch th\u01b0\u1edbc ren d<\/th>\nM1.6<\/th>\nM2<\/th>\nM2.5<\/th>\nM3<\/th>\n(M3.5)<\/th>\nM4<\/th>\nM5<\/th>\nM6<\/th>\nM8<\/th>\nM10<\/th>\n<\/tr>\n<\/thead>\n
P (Cao \u0111\u1ed9)<\/td>\n0.35<\/td>\n0.4<\/td>\n0.45<\/td>\n0.5<\/td>\n0.6<\/td>\n0.7<\/td>\n0.8<\/td>\n1<\/td>\n1.25<\/td>\n1.5<\/td>\n<\/tr>\n
t\u1ed1i \u0111a<\/td>\n0.7<\/td>\n0.8<\/td>\n0.9<\/td>\n1<\/td>\n1.2<\/td>\n1.4<\/td>\n1.6<\/td>\n2<\/td>\n2.5<\/td>\n3<\/td>\n<\/tr>\n
dk t\u1ed1i \u0111a l\u00fd thuy\u1ebft<\/td>\n3.6<\/td>\n4.4<\/td>\n5.5<\/td>\n6.3<\/td>\n8.2<\/td>\n9.4<\/td>\n10.4<\/td>\n12.6<\/td>\n17.3<\/td>\n20<\/td>\n<\/tr>\n
dk th\u1ef1c t\u1ebf t\u1ed1i \u0111a (danh ngh\u0129a)<\/td>\n3<\/td>\n3.8<\/td>\n4.7<\/td>\n5.5<\/td>\n7.3<\/td>\n8.4<\/td>\n9.3<\/td>\n11.3<\/td>\n15.8<\/td>\n18.3<\/td>\n<\/tr>\n
dk th\u1ef1c t\u1ebf t\u1ed1i thi\u1ec3u<\/td>\n2.7<\/td>\n3.5<\/td>\n4.4<\/td>\n5.2<\/td>\n6.94<\/td>\n8.04<\/td>\n8.94<\/td>\n10.87<\/td>\n15.37<\/td>\n17.78<\/td>\n<\/tr>\n
f \u2248<\/td>\n0.4<\/td>\n0.5<\/td>\n0.6<\/td>\n0.7<\/td>\n0.8<\/td>\n1<\/td>\n1.2<\/td>\n1.4<\/td>\n2<\/td>\n2.3<\/td>\n<\/tr>\n
k t\u1ed1i \u0111a (danh ngh\u0129a)<\/td>\n1<\/td>\n1.2<\/td>\n1.5<\/td>\n1.65<\/td>\n2.35<\/td>\n2.7<\/td>\n2.7<\/td>\n3.3<\/td>\n4.65<\/td>\n5<\/td>\n<\/tr>\n
r t\u1ed1i \u0111a<\/td>\n0.4<\/td>\n0.5<\/td>\n0.6<\/td>\n0.8<\/td>\n0.9<\/td>\n1<\/td>\n1.3<\/td>\n1.5<\/td>\n2<\/td>\n2.5<\/td>\n<\/tr>\n
R \u2248<\/td>\n3<\/td>\n4<\/td>\n5<\/td>\n6<\/td>\n8.5<\/td>\n9.5<\/td>\n9.5<\/td>\n12<\/td>\n16.5<\/td>\n19.5<\/td>\n<\/tr>\n
x t\u1ed1i \u0111a<\/td>\n0.9<\/td>\n1<\/td>\n1.1<\/td>\n1.25<\/td>\n1.5<\/td>\n1.75<\/td>\n2<\/td>\n2.5<\/td>\n3.2<\/td>\n3.8<\/td>\n<\/tr>\n
Gi\u1edd gi\u1ea3i lao s\u1ed1...<\/td>\n0<\/td>\n0<\/td>\n1<\/td>\n1<\/td>\n2<\/td>\n2<\/td>\n2<\/td>\n3<\/td>\n4<\/td>\n4<\/td>\n<\/tr>\n

<\/tbody>\n<\/table>\n

C\u00e1ch s\u1eed d\u1ee5ng bao g\u1ed3m vi\u1ec7c l\u1ef1a ch\u1ecdn d\u1ef1a tr\u00ean v\u1eadt li\u1ec7u v\u00e0 t\u1ea3i tr\u1ecdng, v\u1edbi vi\u1ec7c l\u1eafp \u0111\u1eb7t \u1edf nhi\u1ec7t \u0111\u1ed9 ti\u00eau chu\u1ea9n.<\/p>\n<\/section>\n

\n

Y\u00eau c\u1ea7u v\u1ec1 v\u1eadt li\u1ec7u v\u00e0 k\u1ef9 thu\u1eadt<\/h2>\n

C\u00e1c v\u1eadt li\u1ec7u bao g\u1ed3m th\u00e9p, th\u00e9p kh\u00f4ng g\u1ec9 v\u00e0 kim lo\u1ea1i m\u00e0u, v\u1edbi dung sai theo ti\u00eau chu\u1ea9n ISO 4759-1. C\u00e1c y\u00eau c\u1ea7u ch\u00ednh bao g\u1ed3m t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc, khuy\u1ebft t\u1eadt b\u1ec1 m\u1eb7t theo ti\u00eau chu\u1ea9n ISO 6157-1 v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
Lo\u1ea1i<\/th>\nTh\u00e9p<\/th>\nTh\u00e9p kh\u00f4ng g\u1ec9<\/th>\nKim lo\u1ea1i m\u00e0u<\/th>\n<\/tr>\n<\/thead>\n
Y\u00eau c\u1ea7u chung<\/td>\nISO 8992<\/td>\n<\/tr>\n
Dung sai ren<\/td>\n6g theo ti\u00eau chu\u1ea9n ISO 261, ISO 965-2<\/td>\n<\/tr>\n
L\u1edbp t\u00e0i s\u1ea3n<\/td>\n4,8 theo ti\u00eau chu\u1ea9n ISO 898-1<\/td>\nA2-50, A2-70 theo ti\u00eau chu\u1ea9n ISO 3506-1<\/td>\nTheo ti\u00eau chu\u1ea9n ISO 8839<\/td>\n<\/tr>\n
C\u1ea5p \u0111\u1ed9 s\u1ea3n ph\u1ea9m<\/td>\nTheo ti\u00eau chu\u1ea9n ISO 4759-1<\/td>\n<\/tr>\n
H\u1ed1c ch\u1eef th\u1eadp<\/td>\nTheo ti\u00eau chu\u1ea9n ISO 4757<\/td>\n<\/tr>\n
C\u00e1c khuy\u1ebft t\u1eadt b\u1ec1 m\u1eb7t<\/td>\nISO 6157-1<\/td>\n<\/tr>\n
X\u1eed l\u00fd b\u1ec1 m\u1eb7t<\/td>\nCh\u01b0a qua x\u1eed l\u00fd ho\u1eb7c m\u1ea1 \u0111i\u1ec7n theo ti\u00eau chu\u1ea9n ISO 4042; v\u1ea3y k\u1ebdm kh\u00f4ng \u0111i\u1ec7n ph\u00e2n theo ti\u00eau chu\u1ea9n ISO 10683<\/td>\nCh\u01b0a qua x\u1eed l\u00fd ho\u1eb7c \u0111\u01b0\u1ee3c th\u1ee5 \u0111\u1ed9ng h\u00f3a theo ti\u00eau chu\u1ea9n ISO 16048<\/td>\nCh\u01b0a qua x\u1eed l\u00fd ho\u1eb7c m\u1ea1 \u0111i\u1ec7n theo ti\u00eau chu\u1ea9n ISO 4042<\/td>\n<\/tr>\n
Ch\u1ea5p nh\u1eadn<\/td>\nISO 3269<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Nh\u1eefng y\u1ebfu t\u1ed1 n\u00e0y \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng.<\/p>\n<\/section>\n<\/section>\n

\n

T\u1ed5ng quan v\u1ec1 ti\u00eau chu\u1ea9n ISO 7047-2011<\/h2>\n

Ti\u00eau chu\u1ea9n ISO 7047-2011 \u0111\u01b0\u1ee3c xu\u1ea5t b\u1ea3n l\u1ea7n \u0111\u1ea7u v\u00e0o n\u0103m 1994 v\u00e0 \u0111\u01b0\u1ee3c s\u1eeda \u0111\u1ed5i v\u00e0o n\u0103m 2011 \u0111\u1ec3 t\u00edch h\u1ee3p nh\u1eefng ti\u1ebfn b\u1ed9 trong dung sai s\u1ea3n xu\u1ea5t v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u1eadt li\u1ec7u. B\u1ea3n c\u1eadp nh\u1eadt n\u00e0y \u0111\u1ea3m b\u1ea3o s\u1ef1 ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u ng\u00e0y c\u00e0ng ph\u00e1t tri\u1ec3n c\u1ee7a ng\u00e0nh c\u00f4ng nghi\u1ec7p, ch\u1eb3ng h\u1ea1n nh\u01b0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n v\u00e0 ki\u1ec3m so\u00e1t k\u00edch th\u01b0\u1edbc ch\u1eb7t ch\u1ebd h\u01a1n. L\u1ecbch s\u1eed c\u1ee7a ti\u00eau chu\u1ea9n ph\u1ea3n \u00e1nh cam k\u1ebft c\u1ee7a ISO \u0111\u1ed1i v\u1edbi vi\u1ec7c xem x\u00e9t \u0111\u1ecbnh k\u1ef3, v\u1edbi phi\u00ean b\u1ea3n n\u0103m 2011 thay th\u1ebf phi\u00ean b\u1ea3n tr\u01b0\u1edbc \u0111\u00f3 \u0111\u1ec3 gi\u1ea3i quy\u1ebft ph\u1ea3n h\u1ed3i t\u1eeb ng\u01b0\u1eddi d\u00f9ng to\u00e0n c\u1ea7u.<\/p>\n

N\u1ed9i dung ch\u00ednh bao g\u1ed3m c\u00e1c b\u1ea3ng k\u00edch th\u01b0\u1edbc cho b\u01b0\u1edbc ren, k\u00edch th\u01b0\u1edbc \u0111\u1ea7u ren, th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt r\u00e3nh ren v\u00e0 c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc. T\u00e0i li\u1ec7u n\u00e0y tham kh\u1ea3o c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c v\u1ec1 ren (ISO 261 v\u00e0 ISO 965-2), dung sai (ISO 4759-1) v\u00e0 \u0111\u1ed9 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t. C\u00e1c ph\u1ea7n quan tr\u1ecdng \u0111\u1ec1 c\u1eadp \u0111\u1ebfn m\u00e1c v\u1eadt li\u1ec7u, ch\u1eb3ng h\u1ea1n nh\u01b0 th\u00e9p c\u00f3 c\u1ea5p \u0111\u1ed9 b\u1ec1n 4.8, th\u00e9p kh\u00f4ng g\u1ec9 A2-50 ho\u1eb7c A2-70, v\u00e0 kim lo\u1ea1i m\u00e0u theo ISO 8839. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd b\u1ec1 m\u1eb7t, bao g\u1ed3m m\u1ea1 \u0111i\u1ec7n theo ISO 4042 v\u00e0 th\u1ee5 \u0111\u1ed9ng h\u00f3a theo ISO 16048, \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 chi ti\u1ebft \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u1ec1n.<\/p>\n

V\u1ec1 m\u1eb7t c\u1eadp nh\u1eadt, phi\u00ean b\u1ea3n s\u1eeda \u0111\u1ed5i n\u0103m 2011 \u0111\u00e3 tinh ch\u1ec9nh h\u00ecnh d\u1ea1ng r\u00e3nh \u0111\u1ec3 gi\u1ea3m m\u00e0i m\u00f2n \u0111\u1ea7u v\u1eb7n v\u00e0 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng truy\u1ec1n m\u00f4-men xo\u1eafn. \u200b\u200bPhi\u00ean b\u1ea3n n\u00e0y c\u0169ng m\u1edf r\u1ed9ng c\u00e1c t\u00f9y ch\u1ecdn v\u1eadt li\u1ec7u phi kim lo\u1ea1i, ph\u1ea3n \u00e1nh nhu c\u1ea7u t\u1eeb ng\u00e0nh h\u00e0ng h\u1ea3i v\u00e0 h\u00f3a ch\u1ea5t. Nh\u00ecn chung, ti\u00eau chu\u1ea9n ISO 7047-2011 cung c\u1ea5p m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn c\u00f3 c\u1ea5u tr\u00fac \u0111\u1ec3 ti\u00eau chu\u1ea9n h\u00f3a c\u00e1c lo\u1ea1i \u1ed1c v\u00edt, th\u00fac \u0111\u1ea9y hi\u1ec7u qu\u1ea3 trong thi\u1ebft k\u1ebf, mua s\u1eafm v\u00e0 quy tr\u00ecnh l\u1eafp r\u00e1p tr\u00ean nhi\u1ec1u l\u0129nh v\u1ef1c.<\/p>\n<\/section>\n

\n

Nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n c\u1ee7a v\u00edt \u0111\u1ea7u ch\u00ecm c\u00f3 r\u00e3nh ch\u1eef th\u1eadp<\/h2>\n

V\u00edt \u0111\u1ea7u ch\u00ecm c\u00f3 r\u00e3nh ch\u1eef th\u1eadp, theo \u0111\u1ecbnh ngh\u0129a trong ti\u00eau chu\u1ea9n ISO 7047-2011, l\u00e0 lo\u1ea1i \u1ed1c v\u00edt c\u00f3 \u0111\u1ea7u k\u1ebft h\u1ee3p gi\u1eefa h\u00ecnh d\u1ea1ng ch\u00ecm v\u00e0 h\u01a1i nh\u00f4 l\u00ean, cho ph\u00e9p l\u1eafp \u0111\u1eb7t b\u00e1n ph\u1eb3ng. R\u00e3nh ch\u1eef th\u1eadp gi\u00fap c\u1ed1 \u0111\u1ecbnh ch\u1eafc ch\u1eafn b\u1eb1ng tua v\u00edt Phillips, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho vi\u1ec7c l\u1eafp r\u00e1p hi\u1ec7u qu\u1ea3. Nguy\u00ean t\u1eafc n\u00e0y xoay quanh vi\u1ec7c ki\u1ec3m so\u00e1t k\u00edch th\u01b0\u1edbc ch\u00ednh x\u00e1c \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u1ef1 v\u1eeba kh\u00edt v\u00e0 ph\u00e2n b\u1ed1 t\u1ea3i tr\u1ecdng ph\u00f9 h\u1ee3p. C\u00e1c th\u00f4ng s\u1ed1 ch\u00ednh bao g\u1ed3m \u0111\u01b0\u1eddng k\u00ednh ren (d), b\u01b0\u1edbc ren (P), \u0111\u01b0\u1eddng k\u00ednh \u0111\u1ea7u (dk), chi\u1ec1u cao \u0111\u1ea7u (k) v\u00e0 k\u00edch th\u01b0\u1edbc r\u00e3nh. V\u00ed d\u1ee5, b\u01b0\u1edbc ren thay \u0111\u1ed5i t\u1eeb 0,35 mm cho M1.6 \u0111\u1ebfn 1,5 mm cho M10, \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c lo\u1ea1i \u0111ai \u1ed1c v\u00e0 l\u1ed7 ren ti\u00eau chu\u1ea9n.<\/p>\n

Hi\u1ec7u su\u1ea5t c\u01a1 h\u1ecdc \u0111\u01b0\u1ee3c quy\u1ebft \u0111\u1ecbnh b\u1edfi c\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u: v\u00edt th\u00e9p \u0111\u1ea1t c\u1ea5p \u0111\u1ed9 b\u1ec1n 4.8 theo ti\u00eau chu\u1ea9n ISO 898-1, cung c\u1ea5p \u0111\u1ed9 b\u1ec1n k\u00e9o ph\u00f9 h\u1ee3p cho m\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng th\u00f4ng th\u01b0\u1eddng. C\u00e1c bi\u1ebfn th\u1ec3 b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n, l\u00fd t\u01b0\u1edfng cho m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t. G\u00f3c ch\u00ecm 90 \u0111\u1ed9 \u0111\u1ea3m b\u1ea3o ph\u00e2n b\u1ed1 \u00e1p l\u1ef1c \u0111\u1ed3ng \u0111\u1ec1u, gi\u1ea3m s\u1ef1 t\u1eadp trung \u1ee9ng su\u1ea5t. C\u00e1c t\u00ednh to\u00e1n v\u1ec1 m\u00f4-men xo\u1eafn v\u00e0 t\u1ea3i tr\u01b0\u1edbc d\u1ef1a tr\u00ean h\u00ecnh d\u1ea1ng ren, v\u1edbi ti\u00eau chu\u1ea9n cung c\u1ea5p c\u00e1c gi\u00e1 tr\u1ecb t\u1ed1i \u0111a cho c\u00e1c th\u00f4ng s\u1ed1 nh\u01b0 'a' (li\u00ean quan \u0111\u1ebfn \u0111\u1ed9 l\u1ec7ch t\u00e2m ren) v\u00e0 'x' (\u0111\u1ed9 gi\u00e3n). Nh\u1eefng nguy\u00ean t\u1eafc n\u00e0y \u0111\u1ea3m b\u1ea3o v\u00edt c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c t\u1ea3i tr\u1ecdng quy \u0111\u1ecbnh m\u00e0 kh\u00f4ng b\u1ecb h\u1ecfng, l\u00e0m cho ch\u00fang \u0111\u00e1ng tin c\u1eady trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u1ed9ng.<\/p>\n

Trong thi\u1ebft k\u1ebf, c\u00e1c k\u1ef9 s\u01b0 s\u1eed d\u1ee5ng nh\u1eefng nguy\u00ean t\u1eafc n\u00e0y \u0111\u1ec3 l\u1ef1a ch\u1ecdn c\u00e1c lo\u1ea1i v\u00edt ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u l\u1eafp r\u00e1p, xem x\u00e9t c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 b\u00e1n k\u00ednh \u0111\u1ea7u v\u00edt (r) v\u00e0 b\u00e1n k\u00ednh h\u00ecnh c\u1ea7u (R) \u0111\u1ec3 t\u00edch h\u1ee3p tr\u01a1n tru. Ti\u00eau chu\u1ea9n n\u00e0y nh\u1ea5n m\u1ea1nh v\u00e0o dung sai c\u1ea5p s\u1ea3n ph\u1ea9m A, gi\u00fap gi\u1ea3m thi\u1ec3u s\u1ef1 bi\u1ebfn \u0111\u1ed5i v\u00e0 n\u00e2ng cao t\u00ednh l\u1eb7p l\u1ea1i trong s\u1ea3n xu\u1ea5t.<\/p>\n<\/section>\n

\n

Ph\u00e2n t\u00edch \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 tu\u00e2n th\u1ee7<\/h2>\n

\u0110\u1ed9 ch\u00ednh x\u00e1c v\u1ec1 k\u00edch th\u01b0\u1edbc l\u00e0 r\u1ea5t quan tr\u1ecdng, v\u00ec c\u00f3 th\u1ec3 x\u1ea3y ra sai s\u00f3t do s\u1ef1 kh\u00e1c bi\u1ec7t trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t. \u0110\u1ec3 n\u00e2ng cao \u0111\u1ed9 ch\u00ednh x\u00e1c, h\u00e3y s\u1eed d\u1ee5ng c\u00e1c d\u1ee5ng c\u1ee5 \u0111\u00e3 \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n v\u00e0 tu\u00e2n th\u1ee7 dung sai ISO. C\u00e1c l\u1ed7i th\u01b0\u1eddng g\u1eb7p bao g\u1ed3m \u0111\u1ed9 s\u00e2u r\u00e3nh kh\u00f4ng ch\u00ednh x\u00e1c, c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c kh\u1eafc ph\u1ee5c b\u1eb1ng c\u00e1ch ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng. Ti\u00eau chu\u1ea9n n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n b\u1eb1ng c\u00e1ch chu\u1ea9n h\u00f3a thi\u1ebft k\u1ebf, h\u1ed7 tr\u1ee3 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong c\u00e1c c\u1ee5m l\u1eafp r\u00e1p \u00f4 t\u00f4 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u1eafc ch\u1eafn.<\/p>\n<\/section>\n

\n

C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n
\n
S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa r\u00e3nh ch\u1eef H v\u00e0 r\u00e3nh ch\u1eef Z trong ti\u00eau chu\u1ea9n ISO 7047-2011 l\u00e0 g\u00ec?<\/dt>\n
Lo\u1ea1i H cung c\u1ea5p kh\u1ea3 n\u0103ng xuy\u00ean th\u1ea5u ti\u00eau chu\u1ea9n, trong khi lo\u1ea1i Z cung c\u1ea5p h\u00ecnh d\u1ea1ng \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec3 t\u1ea1o ra m\u00f4-men xo\u1eafn t\u1ed1t h\u01a1n.<\/dd>\n
<\/dd>\n
<\/dd>\n
T\u00f4i n\u00ean ch\u1ecdn v\u1eadt li\u1ec7u n\u00e0o cho lo\u1ea1i \u1ed1c v\u00edt n\u00e0y?<\/dt>\n
H\u00e3y l\u1ef1a ch\u1ecdn d\u1ef1a tr\u00ean m\u00f4i tr\u01b0\u1eddng; th\u00e9p cho m\u1ee5c \u0111\u00edch chung, th\u00e9p kh\u00f4ng g\u1ec9 cho c\u00e1c khu v\u1ef1c d\u1ec5 b\u1ecb \u0103n m\u00f2n.<\/dd>\n
<\/dd>\n
<\/dd>\n
Ti\u00eau chu\u1ea9n n\u00e0y ph\u00e2n lo\u1ea1i dung sai nh\u01b0 th\u1ebf n\u00e0o?<\/dt>\n
S\u1ea3n ph\u1ea9m \u0111\u1ea1t ti\u00eau chu\u1ea9n lo\u1ea1i A v\u1edbi dung sai ren 6g.<\/dd>\n
<\/dd>\n
<\/dd>\n
Lo\u1ea1i \u1ed1c v\u00edt n\u00e0y c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 cao kh\u00f4ng?<\/dt>\n
Kh\u00f4ng n\u00ean khuy\u1ebfn ngh\u1ecb s\u1eed d\u1ee5ng n\u1ebfu kh\u00f4ng c\u00f3 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt b\u1ed5 sung; vui l\u00f2ng tham kh\u1ea3o c\u00e1c ti\u00eau chu\u1ea9n li\u00ean quan.<\/dd>\n
<\/dd>\n
<\/dd>\n
Nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd b\u1ec1 m\u1eb7t n\u00e0o \u0111\u01b0\u1ee3c cho ph\u00e9p?<\/dt>\n
M\u1ea1 \u0111i\u1ec7n, th\u1ee5 \u0111\u1ed9ng h\u00f3a ho\u1eb7c ph\u1ee7 l\u1edbp k\u1ebdm d\u1ea1ng v\u1ea3y theo c\u00e1c ti\u00eau chu\u1ea9n ISO tham chi\u1ebfu.<\/dd>\n
<\/dd>\n
<\/dd>\n
Ti\u00eau chu\u1ea9n ISO 7047 so s\u00e1nh nh\u01b0 th\u1ebf n\u00e0o v\u1edbi c\u00e1c ti\u00eau chu\u1ea9n DIN t\u01b0\u01a1ng t\u1ef1?<\/dt>\n
N\u00f3 tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n DIN 966 nh\u01b0ng v\u1edbi dung sai theo ti\u00eau chu\u1ea9n ISO.<\/dd>\n<\/dl>\n<\/section>\n<\/article>","protected":false},"excerpt":{"rendered":"

ISO 7047-2011 Cross Recess Raised Countersunk Screws Introduction The ISO 7047-2011 standard addresses the specifications for raised countersunk head screws with cross recess, which are essential fasteners in various mechanical and engineering applications. These screws, characterized by their 90-degree countersunk angle and Phillips-type cross recess, provide a flush or slightly raised installation surface, enhancing both […]<\/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-5593","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\/5593","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=5593"}],"version-history":[{"count":3,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5593\/revisions"}],"predecessor-version":[{"id":5606,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5593\/revisions\/5606"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/media?parent=5593"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/categories?post=5593"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/tags?post=5593"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}