Raws li cov kev cai ntawm machining txoj kev thiab kev sib dhos raug, qhov tsim nyog nws kam rau siab qib tus nqi yuav tsum raug xaiv rau dimensioning.Qhov loj me uas tsis muaj qhov ntsuas siab ntev hauv daim duab yuav tsum tau teev tseg raws li qhov yuav tsum tau ua ntawm GB / t1804-2000 "linear thiab angular dimensional tolerances yam tsis muaj qhov ntsuas siab".
Limit deviation tus nqi ntawm linear dimension
| Chav kawm kam rau ua | 0 ~ 3 | > 3-6 | > 6-30 | > 30-120 | > 120-400 | > 400-1000 | > 1000 ~ 2000 | > 2000 |
| Precision f | ± 0.05 hli | ± 0.05 hli | ± 0.1 | ± 0.15 | ± 0.2 | ± 0.3 | ± 0.5 hli | — |
| Nruab nrab M | ± 0.1 | ± 0.1 | ± 0.2 | ± 0.3 | ± 0.5 hli | ± 0.8 hli | ± 1.2 | ± 2.0 |
| Rough C | ± 0.2 | ± 0.3 | ± 0.5 hli | ± 0.8 hli | ± 1.2 | ± 2.0 | ± 3.0 | ± 4.0 |
| Thickest V | — | ± 0.5 hli | ± 1.0 | ± 1.5 | ± 2.5 | ± 4.0 | ± 6.0 | ± 8.0 |
Txwv tus nqi sib txawv ntawm fillet radius thiab chamfer qhov siab
| Chav kawm kam rau ua | 0 ~ 3 | 3 ~ 6 | > 6-30 | > 30 |
| Precision f | ± 0.2
| ± 0.5 hli
| ± 1.0
| ± 2.0
|
| Nruab nrab M | ||||
| Rough C | ± 0.4
| ± 1.0
| ± 2.0
| ± 4.0
|
| Thickest V |
Limit deviation tus nqi ntawm lub kaum sab xis dimension
| Chav kawm kam rau ua | 0 ~ 10 | > 10 ~ 50 | > 50-120 | 120-400 Nws | > 400 |
| Precision f | ± 1° | ± 30′ | ± 20′ | ± 10′ | ± 5' |
| Nruab nrab M |
|
|
|
|
|
| Rough C | ± 1° 30′ | ± 1° | ± 30′ | ± 15′ | ± 10′ |
| Thickest V | ± 3° | ± 2° | ± 1° | ± 30′ | ± 20′ |
General kos duab sawv cev yam tsis muaj kev zam txim
Kos tus lej tus lej thiab qib siab kam rau ua nyob ze ntawm lub npe thaiv ntawm daim duab lossis hauv cov kev cai thiab cov ntaub ntawv kev ua haujlwm (xws li cov qauv kev lag luam).Piv txwv li, thaum xaiv cov theem nruab nrab, daim ntawv lo yog raws li nram no:
GB/T 1804-m
Cov qauv tsis cim nrog geometric kam rau ua nyob rau hauv cov duab kos yuav tsum raug cim raws li qib hauv GB / t1184-1996 "geometrical thiab positional tolerances yam tsis muaj tus nqi kam rau ua".[1]
| Chav kawm kam rau ua | 0 ~ 10 | > 10-30 | > 30-100 | > 100-300 | > 300-1000 | > 1000 |
| H | 0.02 ib | 0.05 Nws | 0.1 | 0.2 | 0.3 | 0.4 |
| K | 0.05 Nws | 0.1 | 0.2 | 0.4 | 0.6 | 0.8 ua |
| L | 0.1 | 0.2 | 0.4 | 0.8 ua | 1.2 | 1.6 |
Ncaj thiab flatness tsis kam rau siab
| Chav kawm kam rau ua | 0 ~ 100 | > 100-300 | > 300-1000 | > 1000 |
| H | 0.2 | 0.3 | 0.4 | 0.5 |
| K | 0.4 | 0.6 | 0.8 ua | 1 |
| L | 0.6 | 1 | 1.5 | 2 |
Symmetry tsis kam rau siab
| Chav kawm kam rau ua | 0 ~ 100 | > 100-300 | > 300-1000 | > 1000 |
| H | 0.5 | |||
| K | 0.6 | 0.8 ua | 1 | |
| L | 0.6 | 1 | 1.5 | 2 |
Circular runout tsis kam rau siab
| Chav kawm kam rau ua | Circle runout kam rau ua |
| H | 0.1 |
| K | 0.2 |
| L | 0.5 |
Post lub sij hawm: Oct-12-2020