DRILLSTAR CARBIDE TOOLS ARE WORKING IN MANY PLACES AROUND THE WORLD
Index able gun drill 13.5 -55mm
Indexable gun drills have a machined steel shank and driver, with replaceable cutting inserts and wear pads.
There are three main types of deep hole drilling.
Processes are classified based on how the coolant removes heat and chips from the cutting surface. Three types of deep drilling:
Gun Drill - A cutting tool that is a solid fluted rod with a hole drilled in the center. Coolant is pumped through holes inside the drill bit. It flows back to the outside of the drill through the flutes, carrying the chips with it.
BTA/STS (Boring and Nesting Association/Single Tube System) - The cutting tool is a tube. Coolant is pumped to the outside of the cutting tool and evacuates the chips through a central tube. In order for the tube to be strong enough and have an inside diameter large enough to carry away chips, the hole must be larger than 5 ⁄ 8 inches (16 mm) in diameter.
Jet System - The cutting tool is a tube with another tube inserted inside it. Coolant flows to the cutting surface through smaller tubes, and then the coolant and chips return through larger tubes. This technique only works with holes larger than 3 ⁄ 4 inches (19 mm) in diameter.
Index able gun drill 13.5 -55mm
Indexable gun drills have a machined steel shank and driver, with replaceable cutting inserts and wear pads.
There are three main types of deep hole drilling.
Processes are classified based on how the coolant removes heat and chips from the cutting surface. Three types of deep drilling:
Gun Drill - A cutting tool that is a solid fluted rod with a hole drilled in the center. Coolant is pumped through holes inside the drill bit. It flows back to the outside of the drill through the flutes, carrying the chips with it.
BTA/STS (Boring and Nesting Association/Single Tube System) - The cutting tool is a tube. Coolant is pumped to the outside of the cutting tool and evacuates the chips through a central tube. In order for the tube to be strong enough and have an inside diameter large enough to carry away chips, the hole must be larger than 5 ⁄ 8 inches (16 mm) in diameter.
Jet System - The cutting tool is a tube with another tube inserted inside it. Coolant flows to the cutting surface through smaller tubes, and then the coolant and chips return through larger tubes. This technique only works with holes larger than 3 ⁄ 4 inches (19 mm) in diameter.
