Solid Carbide Drills for Drilling and Milling Thread Compound Drilling

Feature Advantage:

• Efficient cutting: threaded bottom hole, hole chamfering and thread milling with one knife.
• High precision and long life: the thread is bright, the accuracy level is adjustable, the coaxiality is high, and the service life is up to 200m.
• Unique structure: unique internal cooling structure, central internal cooling plus blade partial flow.

Technical Information:

• Typical application of integral alloy drill bits:
  • Small diameter hole
  • Tight or precision tolerance hole
  • The hole shorter than a deep hole
• Chip clogging can cause the drill bit to move radially and affect hole quality, bit life and reliability.
• Chip formation and chip evacuation are important issues in drilling. It depends on the workpiece material, blade geometry selection, coolant pressure, capacity, and cutting parameters.
• The drill bit is mounted on the shank chuck and its circumferential runout must be less than 0.02 mm.

Recommended Cutting Parameters:

• When using this series of tools for the first time, the cutting is performed according to the recommended cutting speed of 90% or the feed rate of 85%. When the cutting condition is stable, the cutting speed and the feed are increased one by one.
• Cutting parameters are recommended for water soluble cutting fluids.
• Use a defect-free, clean chuck when installing the drill and control the drill runout to within 0.02 mm.
• The recommended cutting parameters are for applications where the hole depth is below 5D.
• The recommended cutting parameters are externally cooled drills, which can be increased by 10%-15% depending on the situation.