A core drill is a drill specifically designed to remove a cylinder of material, much like a hole saw. The material left inside the drill bit is referred to as the core.
Core drills are used for many applications, either where the core needs to be preserved (the drilling apparatus used in obtaining a core sample is often referred to as a corer), or where drilling can be done more rapidly since much less material needs to be removed than with a standard bit. This is the reason that diamond-tipped core drills are commonly used in construction to create holes for pipes, manholes, and other large-diameter penetrations in concrete or stone.
Core drills are used frequently in mineral exploration where the coring may be several hundred to several thousand feet in length. The core samples are recovered and examined by geologists for mineral percentages and stratigraphic contact points. This gives exploration companies the information necessary to begin or abandon mining operations in a particular area.
Diamond drilling in the New Stone Age: selecting the right diamond core drill for your stone application is critical to the success of a project.
Jan 01, 2004; In today's growing changing stone industry, fabricators, installers and maintenance personnel encounter a wide variety of...
Publication No. WO/2010/084551 Published on July 29, Assigned to Kabushiki Kaisha Miyana for Core Drill (American Inventor)
Jul 29, 2010; GENEVA, July 30 -- Masaaki Miyanaga, the U. S., has developed a core drill. The patent has been assigned to Kabushiki Kaisha...