提高進給         

Since we do not know the detail of your drill we assume it is good for cutting A3 steel. We also had this problem before. Below is our solution: 1. drill a precise pilot hole, 2. increase your coolant pressure ( you can use high presssure coolant system), 3. selet a good drill for deep hole ( currently many tool makers have launched a similar type of drill like Mapal Mega Deep Drill (http://www.mapal.com/en/products ... ls/mega-deep-drill/), Walter Titex XD Bohrer drill and even OSG and Mitsubishi also developed this type of drill

建議選用可換刀片的鉆頭，刀片磨成群鉆形式。

看看是不是鉆頭刃口倒棱太大了，

VC 設置到80   內冷加個 保證你搞定

要尊重科學，不要為了節拍而盲目提高切削參數。
3 D0 S, ^: T( R) W2 @$ l* v老學員 發表于 2009-5-17 21:50

" ~; p+ t' ^- E- @, V7 n0 c說的對

Sandvik有10倍徑以上的鉆頭嗎？麻煩告訴一下型號。
3 j8 ]2 i+ M& p2 } 16# xiaojunfang4

不斷屑阿，冷卻壓力提到30bar可以？越高約好
提高進給到0.4，降低線速度保證F不變，加工到120深停頓0.3S，這應該對節拍影響不打。
, N" V7 P% }1 p若還不行，觀察鉆頭槽型是否利于斷屑
+ f6 M# l. T; FGUHRING對于深孔鉆很有研究和實際成功經驗。