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Column drill press is a common type characterized by the fact that the drill spindle can be moved up and down axially ("along a column"), and has a height-adjustable...

A bow drill is a simple hand-operated type of tool, consisting of a rod (the spindle or drill shaft) that is set in rapid rotary motion by means of a...

in ancient Egypt by 3000 BC. The pump drill was invented during Roman times. It consists of a vertical spindle aligned by a piece of horizontal wood and...

have a group of 4, 6, or even more main spindles. These are called multispindle machines. For example, gang drills and many screw machines are multispindle...

tool spindles, and many power tool spindles, have a taper as their primary method of attachment for tools. Even on many drill presses, handheld drills, and...

the perforations were biconical in shape and drilled in two directions, creating an hourglass shape. Spindle Whorl (Sulsultin), Chemainus, Coast Salish...

A fire drill, sometimes called fire-stick, is a device to start a fire by friction between a rapidly rotating wooden rod (the spindle or shaft) and a cavity...

control of tools by means of a computer. It is used to operate tools such as drills, lathes, mills, grinders, routers and 3D printers. CNC transforms a piece...

Drilling is a cutting process where a drill bit is spun to cut a hole of circular cross-section in solid materials. The drill bit is usually a rotary...

applications under low spindle speeds, where removal of a large volume of chips is required. Low spiral (low twist rate or "elongated flute") drill bits are used...

diameter (of workpiece or cutter). The spindle may hold the: Material (as in a Lathe chuck) Drill bit in a drill Milling cutter in a milling machine Router...

compressed air or nitrogen). A drill chuck may have a hollow body that threads directly onto a lathe's threaded spindle nose. (These are fairly rare, especially...

shape. Its spindle is thus held accurately perpendicular to the work. Standard taps are held in the spindle, and the operator turns the spindle manually...

For this purpose, hollow paper drill bits are clamped into a driven spindle that drills into the pile of paper. Paper drill bits are available for different...

The shank is the end of a drill bit grasped by the chuck of a drill. The cutting edges of the drill bit contact the workpiece, and are connected via the...

bearing. This can be critical in modern hard disk drive and ultra precision spindles. Tilting pad bearings are used as radial bearings for supporting and locating...

quite heavy-duty spindle bearings to deal with the lateral loading on the spindle that is created by a milling operation. A mill drill also typically raises...

of a chuck spindle with V-shaped brackets or clamps inside. Turning the spindle of the chuck in a clockwise direction tightens the drill bit in the chuck;...

Drill bits are the cutting tools of drilling machines. They can be made in any size to order, but standards organizations have defined sets of sizes that...

Spindle turning, or turning between centers, is a woodturning method referring to a piece of wood on a wood lathe that is being turned on its center axis...