BTA/单管钻 BTA/Single Tube Drilling

STS单管系统也称为BTA系统。冷却液通过压头装置供应到工具，压头装置密封并夹紧零件。此外，冷却剂通过钻杆和正在钻孔之间的空间被引导到切割面这种正向冷却液流既提供了钻头润滑，又提供了适当的排屑流量。碎屑和冷却液的组合通过工具和钻杆的内径在内部返回，然后返回冷却液。

The STS Single Tube System or sometimes referred to as the BTA system. Coolant is supplied to the tool through a pressure head unit which seals and clamps against the part. Also, the coolant is directed to the cutting face via the space between the drill tube and the hole being drilled. This positive coolant flow provides both drill head lubrication and proper flow for chip removal. The combination of chips and coolant returns internally through the l.D. of the tool and drill tube and then back to the coolant.

双管钻/喷吸钻 Double Tube Drilling/Ejector Drilling

双管系统“DTS”或有时被称为钻孔“喷射器”系统，是指通过特殊的冷却液诱导器或连接器在机床主轴上供应冷却液。此外顾名思义，该钻井系统由一个外管和一个内管组成，该外管和内管一端连接到冷却剂诱导器，另一端通过一个快速导程四起点螺纹连接到钻头。

The double tube system “DTS"or sometimes referred to as the "Ejector" system of drilling is where the coolant is supplied at the machine spindle through a special coolant inducer or connector. Also, as the name implies, this drilling system consists of an outer and inner tube that is connected to the coolant inducer at one end and to a drill head at the other end by means of a fast lead, four-start thread.