做數(shù)控這一行多多少少都會(huì)遇到圖紙標(biāo)注尺寸不完整的情況,如果沒(méi)有畫圖軟件,這時(shí)候就要用到三角函數(shù)了,如果想成為一名真正的編程高手,那就更不能缺少的了,現(xiàn)在讓我們來(lái)普及一下,不會(huì)的兄弟們好好學(xué)習(xí)。角函數(shù)的關(guān)系 (正弦) Sin θ = 對(duì)邊A / 斜邊C(余弦) Cosθ = 鄰邊B / 斜邊C(正切) Tanθ = 對(duì)邊A / 鄰邊B對(duì)邊A = 斜邊C * Sinθ對(duì)邊A = 鄰邊B * Tanθ鄰邊B = 斜邊C * Cosθ鄰邊B = 對(duì)邊A / Tanθ斜邊C = 對(duì)邊A / Sinθ斜邊C = 鄰邊B / Cosθ例題:已知斜邊C=20, 角度θ=35度 求對(duì)邊A及鄰邊B 對(duì)邊A =斜邊C * Sinθ= 20 * Sin (35) = 20 * 0.573576 = 11.471 鄰邊B =斜邊C * Cosθ= 20 * Cos (35) = 20 * 0.81915 = 16.383一般車床錐度與三角函數(shù)的關(guān)系錐度比T=(大徑D-小徑d) / (長(zhǎng)度L)Tanθ= (大徑D-小徑d) / (2*長(zhǎng)度L )D= d + 2*L* Tanθd= D - 2*L* Tanθθ= Tan - ( (D-d) / 2L )
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