Machine tool that uses a rotating abrasive grinding wheel to change the shape or dimensions of a hard, usually metallic, workpiece. Grinding is the most accurate of all the basic machining processes. All grinding machines use a wheel made from one of the manufactured abrasives, silicon carbide or aluminum oxide. To grind a cylindrical form, the workpiece rotates as it is fed against the grinding wheel. To grind an internal surface, a small wheel moves inside the hollow of the workpiece, which is gripped in a rotating chuck. On a surface grinder, the workpiece is held in place on a table that moves under the rotating abrasive wheel.
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The tavern is believed to have been established in 1807. Its proprietors were Robert Evans Grinder and Priscilla Knight Grinder. The original stand consisted of two rough log cabins adjoined at right angles with a dogtrot between them. Both rooms had doors facing the Natchez Trace; one room also had a door facing the dis-joined kitchen behind the stand. A barn and stable were also located on the property, although the original locations of these two buildings have not been discovered.
According to tradition, Robert Grinder sold whiskey to the Indians, whose lands came within a few feet of the cabin. The proper use of the stand was to provide food and lodging to the travellers of the Natchez Trace.
In the 1930s, the Civilian Conservation Corps built a replica cabin less than twenty feet from the remains of the original stand. The current cabin does not authentically match the design of the original.
Centerless grinder centerpiece for precision production bars; to produce diameter tolerances as tight as +0.0003"/ -0.0002" on bar stock ranging from 0.1" up to 1-1/ 8" diameter over a 10' - 12' length, a specialty steel supplier combines a centerless grinder, controlled-feed tables, and in-process laser gaging.(GRINDING / GRINDING MACHINES)
Jan 01, 2005; High-volume manufacturers of cutting tools, dental instruments, solenoid valves, and other precision products must have a...