Search results
Results from the WOW.Com Content Network
Turning is a machining process in which a cutting tool, typically a non-rotary tool bit, describes a helix toolpath by moving more or less linearly while the workpiece rotates. Usually the term "turning" is reserved for the generation of external surfaces by this cutting action, whereas this same essential cutting action when applied to ...
Cutting speed may be defined as the rate at the workpiece surface, irrespective of the machining operation used. A cutting speed for mild steel of 100 ft/min is the same whether it is the speed of the cutter passing over the workpiece, such as in a turning operation, or the speed of the cutter moving past a workpiece, such as in a milling operation.
Oval or elliptical turning – turning a piece using an accessory mounted to the headstock that changes the center of rotation of the piece in time with the rotation so that a cutting tool held in a fixed position on the tool rest cuts an oval rather than a round path on the workpiece; Sculptureturnery – turning on a lathe that will generate ...
Turning operations involve rotating the exterior of the workpiece against a non rotating cutting tool that is moved into the workpiece. The rotation of the workpiece is the method of producing a relative motion against the tool.
Turning of a workpiece of wood. A workpiece is a piece, often made of a single material, that is being processed into another desired shape [1] (such as building blocks). The workpiece is usually a piece of relatively rigid material such as wood, [2] metal, plastic, or stone. After a processing step, the workpiece may be moved on to further ...
Turning is a metal cutting process for producing a cylindrical surface with a single point tool. The workpiece is rotated on a spindle and the cutting tool is fed into it radially, axially or both. Producing surfaces perpendicular to the workpiece axis is called facing. Producing surfaces using both radial and axial feeds is called profiling. [13]
A self-centering chuck, also known as a scroll chuck, [2] uses jaws, interconnected via a scroll gear (scroll plate), to hold onto a tool or workpiece. Because they most often have three jaws, the term three-jaw chuck without other qualification is understood by machinists to mean a self-centering three-jaw chuck.
Also, the tool must have a specific geometry, with clearance angles designed so that the cutting edge can contact the workpiece without the rest of the tool dragging on the workpiece surface. The angle of the cutting face is also important, as is the flute width , number of flutes or teeth, and margin size .