[转帖]CNC常用計算公式

mike8012

<span id="MSG4034842" style="FONT-SIZE: 12px;">CNC常用計算公式 <br/>一、 三角函數計算 <br/>1.tanθ=b/a&nbsp; &nbsp;&nbsp; &nbsp;θ=tan-1b/a <br/>2.Sinθ=b/c&nbsp; &nbsp;&nbsp; &nbsp;Cos=a/c <br/><br/>二、切削速度的計算 <br/>&nbsp;&nbsp;Ｖc＝(π*Ｄ*Ｓ)／１０００ <br/>&nbsp;&nbsp;Vc：線速度(m/min)&nbsp; &nbsp;π：圓周率(3.14159)&nbsp; &nbsp;&nbsp;&nbsp;D：刀具直徑(mm)&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;<br/>&nbsp;&nbsp;S：轉速(rpm) <br/>&nbsp;&nbsp;例題. 使用Φ25的銑刀Vc為(m/min)25&nbsp;&nbsp;求S=?rpm <br/>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;Vc=πds/1000 <br/>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;25=π*25*S/1000 <br/>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;S=1000*25/ π*25 <br/>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;S=320rpm <br/>三、進給量(F值)的計算 <br/>&nbsp; &nbsp;Ｆ＝Ｓ＊Ｚ＊Ｆz <br/>&nbsp; &nbsp;F：進給量(mm/min)&nbsp; &nbsp;&nbsp;&nbsp;S：轉速(rpm)&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;Z：刃數 <br/>&nbsp; &nbsp;Ｆz：(實際每刃進給) <br/>&nbsp; &nbsp;例題.一標準2刃立銑刀以2000rpm)速度切削工件，求進給量(F <br/>&nbsp; &nbsp;值)為多少？(Ｆz=0.25mm) <br/>&nbsp; &nbsp;Ｆ＝Ｓ＊Ｚ＊Ｆz <br/>&nbsp; &nbsp;Ｆ＝2000*2*0.25 <br/>&nbsp; &nbsp;Ｆ＝1000(mm/min) <br/>四、殘料高的計算 <br/>&nbsp; &nbsp;Scallop＝（ae＊ae）／8R <br/>&nbsp; &nbsp;Scallop：殘料高(mm)&nbsp; &nbsp; ae：XY&nbsp;&nbsp;pitch(mm)&nbsp; &nbsp;R刀具半徑(mm) <br/>&nbsp; &nbsp;例題.&nbsp;&nbsp;Φ20R10精修2枚刃，預殘料高0.002mm，求Pitch為多&nbsp; &nbsp; <br/>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;少？mm <br/>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; Scallop=ae2/8R&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;<br/>&nbsp; &nbsp; 0.002=ae2/8*10&nbsp; &nbsp;&nbsp;&nbsp;<br/>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; ae=0.4mm <br/>五、逃料孔的計算 <br/>&nbsp; &nbsp; Φ＝√２Ｒ2　　　　　　Ｘ、Ｙ＝Ｄ／４ <br/>　　Φ：逃料孔直徑(mm)&nbsp; &nbsp; R刀具半徑(mm)&nbsp; &nbsp;&nbsp;&nbsp;D：刀具直徑(mm) <br/>例題.&nbsp; &nbsp;&nbsp;&nbsp;已知一模穴須逃角加工(如圖)， <br/>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;所用銑刀為ψ10；請問逃角孔最小 <br/>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;為多少？圓心座標多少？ <br/>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;Φ=√２Ｒ2 <br/>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;Φ=√２＊５２ <br/>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;Φ=7.1(mm) <br/>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;Ｘ、Ｙ＝Ｄ／４ <br/>&nbsp; &nbsp;&nbsp; &nbsp; Ｘ、Ｙ＝１０／４ <br/>&nbsp; &nbsp;&nbsp; &nbsp; Ｘ、Ｙ＝2.5 mm <br/>&nbsp; &nbsp; 圓心座標為(2.5,-2.5) <br/>六、取料量的計算 <br/>Ｑ＝（ae＊ap＊Ｆ）／１０００ <br/>Ｑ：取料量(cm3/min)　　　ae：XY&nbsp;&nbsp;pitch(mm)&nbsp;&nbsp;ap：Z&nbsp;&nbsp;pitch(mm) <br/>&nbsp; &nbsp;例題.&nbsp; &nbsp;已知一模仁須cavity等高加工，Φ35R5的刀XY&nbsp;&nbsp;pitch是刀具的60%，每層切1.5mm，進給量為2000mm/min，求此刀具的取料量為多少？ <br/>Ｑ＝（ae＊ap＊Ｆ）／１０００ <br/>Ｑ＝35*0.6*1.5*2000／1000 <br/>&nbsp; &nbsp; Ｑ＝63 cm3/min <br/>七、每刃進給量的計算 <br/>　　Ｆz＝ｈm * √(Ｄ／ap ) <br/>&nbsp; &nbsp; Ｆz：實施每刃進給量&nbsp; &nbsp;ｈm：理論每刃進給量&nbsp;&nbsp;ap：Z&nbsp;&nbsp;pitch(mm) <br/>&nbsp; &nbsp; D：刀片直徑(mm) <br/>&nbsp;&nbsp;例題&nbsp;&nbsp;(前提depo XY&nbsp;&nbsp;pitch是刀具的60%) <br/>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;depoΦ35R5的刀，切削NAK80材料ｈm為0.15mm，Z軸切深1.5mm，求每刃進給量為多少？ <br/>　　Ｆz＝ｈm * √(Ｄ／ap ) <br/>　　Ｆz＝0.2*√10/1.5 <br/>Ｆz＝0.5mm&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; <br/>沖模刀口加工方法 <br/>　 刀口加工深度＝板厚－刀口高＋鉆尖（０．３Ｄ） <br/>　Ｄ表示刀徑 <br/>鑽頭鑽孔時間公式 <br/>Ｔ（ｍｉｎ）＝Ｌ（ｍｉｎ）／Ｎ（ｒｐｍ）＊ｆ（ｍｍ／ｒｅｖ） <br/>＝πＤＬ／１０００ｖｆ <br/>Ｌ：鑽孔全長　　　Ｎ：回轉數　　　ｆ：進刀量系數　　 <br/>Ｄ：鑽頭直徑　　　ｖ：切削速度 <br/>如圖　　孔深ｌ　　鑽頭孔全長Ｌ　　　則Ｌ＝ｌ＋Ｄ／３ <br/>　　　　Ｔ＝Ｌ／Ｎｆ＝πＤＬ／１０００ｖｆ <br/><br/><br/><br/><br/><br/><br/>系數表ｆ&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;直徑ｍｍ　　　　　　進刀ｍｍ／ｒｅｖ <br/>　　　　　　 　&nbsp; &nbsp;1.6~3.2&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;0.025~0.075 <br/>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;3.2~6.4　　　　&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;0.05~0.15 <br/>　　　　　　　　　6.4~12.8　　&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;0.10~0.25 <br/>　　　　　　&nbsp; &nbsp;&nbsp; &nbsp;12.8~25　　　　&nbsp; &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;0.175~0.375&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; <br/>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;25以上　　　　　&nbsp; &nbsp; 　0.376~0.625　　 <br/>１英寸＝２５．４ｍｍ＝８分 <br/>２５．４／牙數＝牙距　　　　　　　　管牙計算公式 <br/>例如　　　２５．４／１８＝１．４１４　　　牙距為５／１６絲攻 <br/>馬力（槍鑽） <br/>Ｗ＝Ｍｄ＊Ｎ／９７．４１０ <br/>　Ｗ：所要動力（ＫＷ） <br/>Ｍｄ：扭矩（ｋｇ－ｃｍ） <br/>　Ｎ：回轉數（ｒ.ｐ.ｍ） <br/>扭矩計算公式如下： <br/>Ｍｄ＝１／２０＊ｆ＊ｐｓ＊ <br/>ｆ為進給量ｍｍ／ｒｅｖ系數 <br/>ｒ為鑽頭半徑賽（ｍｍ） <br/>α：切削抵抗比值ｐｓ．在小進給時，一般鋼為５００ｋｇ／ｍ㎡；一般鑄鐵為 <br/>　　３００ｋｇ／ｍ㎡；<br/></span>

jjfu443

好。。。顶一下

dqj401

谢

展鹏

<p>不错&nbsp; 复制先</p>

oceanus

不错 顶！！！！

ssnau

<p>真的不错!!</p><p>非常感谢!!!!</p>

gameking

谢谢

yxhqqqq

很好啊

leonfu

<p>真的不错!!</p><p>非常感谢!!!!</p>

Lxq8010

<p>謝謝,</p><p>不過還有沒有更多一點呢</p>

chen00

顶一下

a3b3c3

good,ding.

毛凡

THANKS !

caoming0781

手工编程很用的着

王子面

thank you.

rd83513

<p>收下啦!!</p>

yjania

谢过!

yhouser

[em01] Good!

lj_5398

<p>谢谢,</p>

fjw810315

不错 顶！！！！