In machining, boring is defined as the process of enlarging a hole that has already been drilled into a material by utilizing a single-point cutting tool, such as a boring machine. Essentially, boring machines are devices that produce smooth and accurate holes in a workpiece by enlarging the existing hole’s diameter. As bores can be used to drill into a variety of materials with varying sizes, there are many different boring machines available.
Line Boring Machines
A line boring machine produces holes in heavy construction equipment, such as cranes and endloaders, and it is a very cost-effective piece of equipment. This process is also called align boring as it creates perfectly straight and aligned bores. Furthermore, line boring machines are capable of measuring bores using calibrated internal and external micrometers with sizes ranging from 50 mm to 2000 mm in diameter.
Tunnel Boring Machines
A tunnel boring machine has the capacity to drill into countless materials ranging from hard rock to sand, and it produces a smooth tunnel wall. Due to the tunnel-like nature of the bores it produces, this machine is often called a mole. Additionally, they consist of one or two shields and trailing support mechanisms.
Horizontal Boring Machines
A horizontal boring machine is a time-saving machine used to drill holes for highly rigid construction projects. For this type, there are subtypes, those of which include table and floor variations. A table-type horizontal boring machine has a table attached to the machine that moves in two axes while a floor-type horizontal boring machine moves on floor plates.
Directional Boring Machines
Directional boring machines are designed with a frame, alongside a slidable drive mechanism that is mounted on the frame. Typically, this type of boring machine is used in underground construction projects where drill bits must be capable of penetrating the ground for installing utility lines.
Cylinder Boring Machines
Cylinder boring machines are mainly used for reboring engine cylinders in automobiles. This process consists of the removal of damaged material from the cylinder walls by spinning a specialized carbide tool inside the cylinder.
Jig Boring Machines
A jig boring machine, or jig borer, is used to enlarge existing holes with a high degree of accuracy. They have the capacity to perform operations such as drilling and boring, as well as creating countersinking holes in metal work pieces.
Portable Boring Machines
Typically used for repairing or reboring holes in heavy construction equipment, a portable boring machine is a flexible, powerful, and easy-to-use machine that is available with a pneumatic or hydraulic drive.
Vertical Boring Machines
A vertical boring machine is designed for manual, vertical drilling, and it is equipped with a drill chuck.
Coupling Boring Machines
A coupling boring machine is designed to bore precision couplings which are found in turbine coupling applications.
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