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Trenchless construction includes such construction methods as tunneling, microtunneling (MTM), horizontal directional drilling (HDD) also known as directional boring, pipe ramming (PR), pipe jacking (PJ), moling, horizontal auger boring (HAB) and other methods for the installation of pipelines and cables below the ground with minimal excavation.
The work spindle is referred to as the C axis and, if a rotary table is incorporated, its centre line is the B axis. Horizontal boring machines are often heavy-duty industrial machines used for roughing out large components, but there are high-precision models too. Modern machines use advanced computer numerical control (CNC) systems and ...
One of the boring machines used for the Channel Tunnel between France and the United Kingdom. A tunnel boring machine (TBM), also known as a "mole" or a "worm", is a machine used to excavate tunnels. Tunnels are excavated through hard rock, wet or dry soil, or sand, each of which requires specialized technology.
Directional boring machine. Directional boring, also referred to as horizontal directional drilling (HDD), is a minimal impact trenchless method of installing underground utilities such as pipe, conduit, or cables in a relatively shallow arc or radius along a prescribed underground path using a surface-launched drilling rig. Directional boring ...
The Cincinnati Milling Machine Company was an American machine tool builder headquartered in Cincinnati, Ohio. Incorporated in 1889, the company was formed for the purpose of building and promoting innovative new machine tool designs, especially milling machines. The principals in forming the company were Frederick A. Geier and Fred Holz.
The purpose of the drill is to create a tunnel under surface obstructions. First, the operator surveys the area and the obstacle (road, sidewalk, driveway). Utility locators must supervise any underground work, and the path most clear of utilities is chosen to send the tool through. The first hole is dug on one side of the obstacle.
A part's-eye view of a boring bar. Hole types: Blind hole (left), through hole (middle), interrupted hole (right). In machining, boring is the process of enlarging a hole that has already been drilled (or cast) by means of a single-point cutting tool (or of a boring head containing several such tools), such as in boring a gun barrel or an engine cylinder.
Boring machine may refer to: Boring machine (carpentry) A machine for boring (manufacturing) holes; Tunnel boring machine; A machine that is not very exciting. See also