DRILLSTAR CARBIDE TOOLS ARE WORKING IN MANY PLACES AROUND THE WORLD
The BTA (Boring & Trepanning Association) System was developed largely by an international group of tool manufacturers. This system was one of the first successful systems of internal chip removal tools, and includes a drilling, a boring, and a trepanning head and is considered the best system in hole making work that utilizes high pressure coolant tools.
In the BTA system hole making process, fluid under pressure flows to the setting edge over the O.D. of the boring bar and head, and exhausts with the chips through the I. D. of the boring bar. Clean filtered fluid flows constantly over the outside of the head, thus lubricating the guide pads which act as a burnishing tool to produce a smoother finish, and capable of high rate of feed. Hole depth is obtainable as much as 150 diameters or deeper.
Additional deep hole drilling and machining tools can be used on BTA deep hole drilling machines to achieve specific finished hole properties or reach strict tolerances.
Counterboring tools are used to enlarge existing holes, which are either drilled or cast. Counterboring is generally configured to pilot off a finished bore for straightness, using wear pads which are supported by the existing bore. It can also be configured to reach stringent concentricity requirements, using the pre-bore diameter for a guide. This process is capable of high stock removal, with multi-cutter counterbore tools.
20 – 630 mm [0.79 – 24.8 in]
External Coolant
Pull boring is a specific configuration of counterboring, in which the tool is pulled back through the existing hole on a tensioned bar, for strict straightness tolerances. Pull boring provides exceptional control over straightness by using the boring bar in tension, rather than compression, and by following the center line of the machine by supporting off the finished hole. Pull boring tools can also be used to maintain uniform wall thickness, by piloting off the original hole.
20 – 630 mm [0.79 – 24.8 in]
External Coolant
Trepanning tools are used to drill a hole into solid material, by cutting a larger diameter and leaving a solid core in the center of the hole. Trepanning can produce a larger diameter hole with less power than solid drilling in certain cases, and the core is often re-used in other applications.
20 – 500 mm [0.79 – 20.0 in]
Drills larger holes from solid, leaving reusable core
External Coolant
Skiving and roller burnishing is a one-pass, two-process operation that finishes hydraulic cylinders. Skiving tools can be visualized as modified floating reamers, which remove material from the inside hole diameter, for improved roundness and surface finish, with low radial engagement. Roller burnishing cold works the surface of the workpiece by plasticizing the top layer of material, compressing peaks and filling in valleys, resulting in mirror surface finish properties.
20 – 500 mm [0.79 – 20.0 in]
Finishes existing bore for surface finish requirements
External Coolant
The BTA (Boring & Trepanning Association) System was developed largely by an international group of tool manufacturers. This system was one of the first successful systems of internal chip removal tools, and includes a drilling, a boring, and a trepanning head and is considered the best system in hole making work that utilizes high pressure coolant tools.
In the BTA system hole making process, fluid under pressure flows to the setting edge over the O.D. of the boring bar and head, and exhausts with the chips through the I. D. of the boring bar. Clean filtered fluid flows constantly over the outside of the head, thus lubricating the guide pads which act as a burnishing tool to produce a smoother finish, and capable of high rate of feed. Hole depth is obtainable as much as 150 diameters or deeper.
Additional deep hole drilling and machining tools can be used on BTA deep hole drilling machines to achieve specific finished hole properties or reach strict tolerances.
Counterboring tools are used to enlarge existing holes, which are either drilled or cast. Counterboring is generally configured to pilot off a finished bore for straightness, using wear pads which are supported by the existing bore. It can also be configured to reach stringent concentricity requirements, using the pre-bore diameter for a guide. This process is capable of high stock removal, with multi-cutter counterbore tools.
20 – 630 mm [0.79 – 24.8 in]
External Coolant
Pull boring is a specific configuration of counterboring, in which the tool is pulled back through the existing hole on a tensioned bar, for strict straightness tolerances. Pull boring provides exceptional control over straightness by using the boring bar in tension, rather than compression, and by following the center line of the machine by supporting off the finished hole. Pull boring tools can also be used to maintain uniform wall thickness, by piloting off the original hole.
20 – 630 mm [0.79 – 24.8 in]
External Coolant
Trepanning tools are used to drill a hole into solid material, by cutting a larger diameter and leaving a solid core in the center of the hole. Trepanning can produce a larger diameter hole with less power than solid drilling in certain cases, and the core is often re-used in other applications.
20 – 500 mm [0.79 – 20.0 in]
Drills larger holes from solid, leaving reusable core
External Coolant
Skiving and roller burnishing is a one-pass, two-process operation that finishes hydraulic cylinders. Skiving tools can be visualized as modified floating reamers, which remove material from the inside hole diameter, for improved roundness and surface finish, with low radial engagement. Roller burnishing cold works the surface of the workpiece by plasticizing the top layer of material, compressing peaks and filling in valleys, resulting in mirror surface finish properties.
20 – 500 mm [0.79 – 20.0 in]
Finishes existing bore for surface finish requirements
External Coolant
