O were ọtụtụ puku afọ tupu e mepụta obere skru ruo mgbe a na-emechi ha n'akụkụ elekere wee tọpụ ha n'akụkụ elekere. Uzuzu ọla edo echewo maka nsogbu, gịnị kpatara na a ga-ejigide ha n'akụkụ elekere?
Ngwa igwe igwe isii kacha dị mfe bụ:Mkpọsa, elu elu, ihe mgbakwasị ụkwụ, ihe ndọba ụgbọ mmiri, wedges, wiil, axles.
Ihe nkedo ahụ so na igwe isii dị mfe, ma n'ikwu ya n'ezoghị ọnụ, ọ bụ naanị axis na ụgbọ elu nwere mmasị na-efegharị gburugburu ya. Taa, kposara emepụtala nha ọkọlọtọ. Ụzọ a na-ahụkarị nke iji skru bụ imechi ya n'akụkụ elekere (ma ọ bụghị n'akụkụ elekere iji tọpụ ya).
Otú ọ dị, ebe ọ bụ na a na-eji aka mee ihe ndị ahụ na mmalite nke mmepụta ihe ahụ, ịdị mma nke screws adịghị agbanwe agbanwe, nke a na-ekpebikarị site na mmasị onwe onye nke onye omenkà.
N’etiti narị afọ nke 16, injinia n’ụlọikpe France bụ́ Jaques Besson chepụtara lathe nke a pụrụ ịkpụ ka ọ bụrụ skru, e mechakwara gbasaa nkà na ụzụ a n’ime 100 afọ. Onye England bụ Henry Maudsley chepụtara lathe ọgbara ọhụrụ na 1797, ma jiri ya mee ka ịdị mma nke eriri ahụ dịkwuo mma. Ka o sina dị, ọ nweghị ọkọlọtọ otu maka nha na ịdị mma nke skru.
Ọnọdụ a gbanwere na 1841. Joseph Whitworth, onye na-amụ Maudsley, nyefere otu isiokwu na Institute of Municipal Engineers na-akpọ maka ntinye nke ụdị screw. Ọ tụrụ aro abụọ:
1. The ọchịchọ nke ịghasa eri kwesịrị 55 Celsius.
2. N'agbanyeghị dayameta nke ịghasa, a ga-anakwere ụkpụrụ ụfọdụ maka ọnụọgụ waya kwa ụkwụ.
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Oge nzipu: Eprel-16-2020