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Naidheachdan

Popular Naidheachdan

Rivet

Uair: 2020-07-10 Beachd: 45

A rivet is a permanent mechanical fastener. Before being installed, a rivet consists of a smooth cylindrical shaft with a head on one end. The end opposite the head is called the tail. On installation the rivet is placed in a punched or drilled hole, and the tail is upset, or bucked (i.e., deformed), so that it expands to about 1.5 times the original shaft diameter, holding the rivet in place. In other words, pounding creates a new "head" on the other end by smashing the "tail" material flatter, resulting in a rivet that is roughly a dumbbell shape. To distinguish between the two ends of the rivet, the original head is called the factory head and the deformed end is called the shop head or buck-tail.

Leis gu bheil ceann gu h-èifeachdach air gach ceann de seamraig stàlaichte, faodaidh e taic a thoirt do luchdan teannachaidh (luchdan co-shìnte ri axis a ’chrann); ge-tà, tha e fada nas comasaiche taic a thoirt do luchdan rùsgaidh (luchdan ceart-cheàrnach ri axis a ’chrann). Boltaichean agus Sgreutaichean nas freagarraiche airson tagraidhean teannachadh.

Bidh fasgaidhean a thathas a ’cleachdadh ann an togail bhàtaichean fiodha traidiseanta, leithid ìnean copair agus boltaichean clinch, ag obair air an aon phrionnsapal ris an seamraig ach bha iad air an cleachdadh fada mus deach an teirm seamraig a thoirt a-steach agus, far a bheil cuimhne orra, mar as trice tha iad air an seòrsachadh am measg ìnean agus boltaichean fa leth. .