Ro-ràdh Bathar
Bidh fàinne a 'sgoltadh aig aon àm agus air a lùbadh gu cumadh helical. Tha seo ag adhbhrachadh gum bi an inneal-nigheadaireachd a’ cleachdadh feachd earraich eadar ceann an fastener agus an t-substrate, a chumas an inneal-nigheadaireachd gu cruaidh an aghaidh an t-substrate agus an t-snàthainn bolt gu cruaidh an aghaidh an t-snàthainn cnò no substrate, a ’cruthachadh barrachd brisidh agus strì an aghaidh cuairteachadh. Tha inbhean iomchaidh ASME B18.21.1, BHO 127 B, agus Inbhe Armailteach nan Stàitean Aonaichte NASM 35338 (MS 35338 agus AN-935 roimhe).
'S e helix air an làimh chlì a th' ann an nigheadairean an earraich agus leigidh iad leis an t-snàthainn a bhith air a theannachadh air an làimh dheis a-mhàin, ie taobh deiseal. Nuair a thèid gluasad cas chlì a chuir an sàs, bidh an oir àrdaichte a’ bìdeadh a-steach don taobh shìos den bholt no den chnò agus am pàirt ris a bheil e ceangailte, agus mar sin a’ seasamh an aghaidh tionndadh. Mar sin, tha nigheadairean earraich neo-èifeachdach air snàithleanan air an làimh chlì agus uachdar cruaidh. Cuideachd, chan eil iad gu bhith air an cleachdadh ann an co-bhonn ri inneal-nigheadaireachd còmhnard fon nigheadair earraich, oir bidh seo a ’sgaradh inneal-nigheadaireachd an earraich bho bhith a’ bìdeadh a-steach don phàirt a chuireas an aghaidh tionndadh.
Tha buannachd nigheadairean glas an earraich na laighe ann an cumadh trapezoidal an nigheadair. Nuair a thèid a dhlùthadh gu luchdan faisg air neart dearbhaidh a’ bholt, toinneamh agus rèidhidh e. Bidh seo a’ lughdachadh ìre earraich a’ cho-cheangail bolted a leigeas leis barrachd neart a chumail fo na h-aon ìrean crathaidh. Tha seo a 'cur casg air sgaoileadh.
Iarrtasan
The spring washer prevents nuts and bolts from turning, slipping and coming loose because of vibration and torque. Different spring washers perform this function in slightly different ways, but the basic concept is to hold the nut and bolt in place. Some spring washers achieve this function by biting into the base material (bolt) and the nut with their ends.
Spring washers are commonly used in applications involving vibration and possible slippage of fasteners. Industries that commonly use spring washers are transportation related (automotive, aircraft, marine). Spring washers may also be used in household appliances such as air handlers and clothes washers (washing machines).
trast-thomhas ainmichte |
2 |
2.5 |
3 |
4 |
5 |
6 |
8 |
10 |
12 |
(14) |
|
d |
luach as lugha |
2.1 |
2.6 |
3.1 |
4.1 |
5.1 |
6.2 |
8.2 |
10.2 |
12.3 |
14.3 |
luach suaicheantais |
2.3 |
2.8 |
3.3 |
4.4 |
5.4 |
6.7 |
8.7 |
10.7 |
12.8 |
14.9 |
|
h |
ainmichte |
0.6 |
0.8 |
1 |
1.2 |
1.6 |
2 |
2.5 |
3 |
3.5 |
4 |
luach as lugha |
0.52 |
0.7 |
0.9 |
1.1 |
1.5 |
1.9 |
2.35 |
2.85 |
3.3 |
3.8 |
|
luach suaicheantais |
0.68 |
0.9 |
1.1 |
1.3 |
1.7 |
2.1 |
2.65 |
3.15 |
3.7 |
4.2 |
|
n |
luach as lugha |
0.52 |
0.7 |
0.9 |
1.1 |
1.5 |
1.9 |
2.35 |
2.85 |
3.3 |
3.8 |
luach suaicheantais |
0.68 |
0.9 |
1.1 |
1.3 |
1.7 |
2.1 |
2.65 |
3.15 |
3.7 |
4.2 |
|
H |
luach as lugha |
1.2 |
1.6 |
2 |
2.4 |
3.2 |
4 |
5 |
6 |
7 |
8 |
luach suaicheantais |
1.5 |
2.1 |
2.6 |
3 |
4 |
5 |
6.5 |
8 |
9 |
10.5 |
|
Mìle pìosan cuideam (stàilinn) kg |
0.023 |
0.053 |
0.097 |
0.182 |
0.406 |
0.745 |
1.53 |
2.82 |
4.63 |
6.85 |
|
trast-thomhas ainmichte |
16 |
(18) |
20 |
(22) |
24 |
(27) |
30 |
36 |
42 |
48 |
|
d |
luach as lugha |
16.3 |
18.3 |
20.5 |
22.5 |
24.5 |
27.5 |
30.5 |
36.6 |
42.6 |
49 |
luach suaicheantais |
16.9 |
19.1 |
21.3 |
23.3 |
25.5 |
28.5 |
31.5 |
37.8 |
43.8 |
50.2 |
|
h |
ainmichte |
4 |
4.5 |
5 |
5 |
6 |
6 |
6.5 |
7 |
8 |
9 |
luach as lugha |
3.8 |
4.3 |
4.8 |
4.8 |
5.8 |
5.8 |
6.2 |
6.7 |
7.7 |
8.7 |
|
luach suaicheantais |
4.2 |
4.7 |
5.2 |
5.2 |
6.2 |
6.2 |
6.8 |
7.3 |
8.3 |
9.3 |
|
n |
luach as lugha |
3.8 |
4.3 |
4.8 |
4.8 |
5.8 |
5.8 |
6.2 |
6.7 |
7.7 |
8.7 |
luach suaicheantais |
4.2 |
4.7 |
5.2 |
5.2 |
6.2 |
6.2 |
6.8 |
7.3 |
8.3 |
9.3 |
|
H |
luach as lugha |
8 |
9 |
10 |
10 |
12 |
12 |
13 |
14 |
16 |
18 |
luach suaicheantais |
10.5 |
11.5 |
13 |
13 |
15 |
15 |
17 |
18 |
21 |
23 |
|
Mìle pìosan cuideam (stàilinn) kg |
7.75 |
11 |
15.2 |
16.5 |
26.2 |
28.2 |
37.6 |
51.8 |
78.7 |
114 |