Drilling - VHM/HSS solid drills

The drills are made of a semi-finished product in the form of a carbide blanks or of high-speed steel. In the grinding process such elements of geometry are created as:
  • Flute – responsible for removing the chip from the hole.
  • core diameter – transfers the stress created during drilling.
  • Margin– is responsible for stabilizing the drill in the hole.
  • Gashing– grooves on the face forming the cutting edge with the flank surface.
  • flank surface – is responsible for not blurring the face of the drill during drilling.
  • chisel edge – is formed by joining flank surfaces

The use of carbide drills allows you to make a hole without the need for pre-drilling. In addition, the cutting parameters used for drilling is significantly higher compared to HSS drills.

HSS drill have higher impact strength than carbide drill. With inaccurate clamping and low-rigid machines, the durability of HSS drills will be longer than that of carbide drills, which would chip due to run-out.

HSS Drill

Wiertło HSS

VHM Drill

Wiertło VHM z chłodzeniem

Solid carbide chamfer drill

Wiertło fazujące VHM