When Should I Use Flat Drills (Flat Bottom Tools) ?

Flat Drill (or Flat Bottom Tool) is applicable for a multitude of drilling applications such as angled surface, curved surface, flat bottom hole, eccentric hole, and more.

The following graphic expression will help you understand at a glance.
  1. 平頭鑽_傾斜面鑽孔Inclined Surface
  2. 平頭鑽_曲面加工Curved Surface
  3. 平頭鑽_孔貫通加工Cross-Hole
  4. 平頭鑽_深孔加工Counter boring
  5. 平頭鑽_引孔Guide Hole
  6. 平頭鑽_出口傾斜面加工Inclined Exit Surface
  7. 平頭鑽_薄板加工Thin Plate
  8. 平頭鑽_偏心孔矯正Correction of Eccentric Hole
  9. 平頭鑽_半孔加工Half Hole
  10. 平頭鑽_重叠孔加工Chained Hole
  11. 平頭鑽_薄板連續加工Thin Plate
  12. 平頭鑽_螺紋盲孔Blind Hole for Threading 

Tips: When using long flute drill bits, it’s better to use a positioning hole or a guide hole in advance.

● Position Hole: 1xD to 3xD deep drilled to assure consistent and precise holes with a long drill, and the guide hole should be bigger around 0.1mm than the diameter of the drill.
● Guide Holes: In order to assure precise hole position, and the guide hole should be bigger around 0.1mm than the diameter of the drill.

In order to meet manufacturers’ various processing needs, Speed Tiger Flat Bottom Drills Series provides with the 2D and 4D, a general-purpose type that can be used for a wide range of machining; the 3D and 5D with coolant holes that can be effectively used in stainless steel application too.

The features of Speed Tiger Flat Drills (Flat Bottom Tools) :
1) Special geometry design:
  • Provides superior chip evacuation.
  • Allows break-chips effectively.
  • Enhance the cutting edge.
小圖_2FD 4FD小圖_3FDC小圖_5FDC
2) Special flute design:
  • A. Tip protection for Stronger Corner - Protect the edge and with excellent chipping resistance.
  • B. The smooth surface of the helix cutting edge.
  • C. Double margin for 4FD /3FDC / 5FDC - Allows high precision straight cutting.
Product Info: