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Rollers, and balls placed between moving parts to reduce friction and wear.
bed -
One of the principal parts of a machine tool, having accurately machined ways or bearing surfaces for supporting and
aligning other parts of the machine.
bevel -
Any surface that is not at right angles to another surface. Also, the name given a tool used for measuring, laying out, or
checking the accuracy of work machined at an angle or bevel.
bit, tool (cutter) -
A hardened steel bar or plate that is shaped according to the operation to be performed and the material to be machined.
bore -
To enlarge and finish the surface of a cylindrical hole by the action of a rotating boring bar (cutting tool) or by the action of a
stationary tool pressed (fed) against the surface as the part is rotated.
boring bar (cuffer bar) -
A combination tool holder and shank.
boring tool -
A cutting tool in which the tool bit'. the boring bar and, in some cases, the tool holder are incorporated in one solid piece.
broach -
A long, tapered cutting tool with serration's which, when forced through a hole or across a surface, cuts a desired shape or
bronze -
A nonferrous alloy consisting essentially of copper and tin.
carbide tool bits -
Lathe cutting tools to which carbide tip inserts have been brazed, to provide cutting action on harder materials than the high
speed cutters are capable of.
carriage -
A principal part of a lathe that carries the cutting tool and consists of the saddle, compound rest. and apron.
case hardening -
A heat treating process, basically carbonizing. that makes the surface layer or case of steel substantially harder than the
interior or core.
castigated nut (castle nut) -
A nut with grooves cut entirely across the top face.
casting -