Page 1755 - All Industrial Tool Supply | General Catalog

Definitions
1753
1753
1753
coolant-A common term given to the dovetail-A two-part slide bearing emulsion-A coolant formed by mixing force fit-A fitting which one part is forced
numerous cutting fluids or compounds assembly used in machine tool soluble oils or compounds with water. of pressed into another to form a single
used with cutting tools to increase the construction for the precise alignment extruded-Metal which had been shaped by unit. There are different classes of force
tool life and to improve surface finish on and smooth operation of the movable forcing throughchine a flat surface, fits depending on standard limits between
the material. components of the machine. as in the end of a shaft in the lathe mating parts.
corrosion-Oxidation (rusting) or similar dowel-A pin fitted or keyed in two adjacent (operation is known as facing). forge-To form or shape heated metal by
chemical change in metals. parts to accurately align the parts when face milling-Milling a large flat surface hammering. Also the name of the unit used
counterbore-To enlarge the top part of a assembling them. with a milling cutter that operates in a for heating metal.
hole to a specific size, as for the head of down feed (climb cutting, climb plane that is at right angles to its axis. formed cutters-Milling cutters which will
a socket-head or cap screw. Also, the tool milling)-A seldom used method of feeding faceplate-A large circular plate with produce shaped surfaces with a single
that is used. work into milling cutters. The work is fed slots and holes for mounting the cut, and so designed that they may be
countersink-To enlarge the top part of a in the same direction as the portion of the workpiece. It is attached to the headstock sharpened without changing their outline
hole at an angle for a flat-head screw. Also, cutter which comes in contact with it. of a lathe. or shape.
the tool that is used. dressing-The act of removing the glaze facing-The process of making a flat or forming tool-Tool ground to a desired
cross feed-The feed that operates across and dulled abrasives from the face of a smooth surface (usually the end) on a piece shape to reproduce this shape on the
the axis of the workpiece or at right angles grinding wheel to make it clean and sharp. of stock or material. workpiece.
to the main or principal feed on a machine. See truing. fatigue-The effect on certain materials, free cut-An additional cut with no
cross section-A view showing an internal drift-A tapered, flat steel used to remove especially metals, undergoing repeated advancement of depth.
structure as it would be revealed by cutting drills and other tapered shank tools from stresses. free cutting steel-Bar stock containing a
through the piece in any plane. spindles, sockets or sleeves. Also a round, feed-The rate of travel of a cutting high percentage of sulfur, making it very
crucible steel-A high-grade tool steel tapered punch used to align/ enlarge holes. tool across or into the work, expressed easy to machine. Also known as Bessemer
made by melting selected materials in a drill-A pointed tool, rotated to cut holes. in inches per minute or in inches per screw stock.
crucible. drill bushing-A hardened steel guide revolution. free fit-A class of fit intended for use
cutting fluid-A liquid used to cool and inserted in jigs, fixtures or templates for feed mechanism-The mechanism, often where accuracy is not essential or where
lubricate the cutting to improve the work the purpose of providing a guide for the automatic which controls the advancing large temperature variations are likely to
surface finish. drill in drilling holes in their proper or exact movement (feed) of the cutting tools used be encountered, or the presence of both
cutting speed-The surface speed of the location. in machines. conditions.
workpiece in a lathe or a rotating cutter, drill, center-A combination drill & female part-A conca ve piece of fulcrum-The point or support on which a
commonly expressed in feet per minute countersink. equipment which receives a mating male lever turns.
(FPM) and converted to revolutions per drill chuck-A device used to grip drills and (convex) part. gage-Devices for measuring or checking
minute (RPM) for proper setting on the attach them to a rotating spindle. ferrous-A metal alloy in which iron is the the dimensions of objects.
machine. drill, twist-A commonly used metal- major ingredient. gage blocks-Steel blocks machined to
cyaniding-A process of case hardening cutting drill, usually made with two flutes file test-A test for hardness in which a extremely accurate dimensions.
steel by heating in molten cyanide. running around the body. corner of a file is run across the piece of gage, center-See center gage
dead center- center, dead. drill jig-A jig which holds parts or units metal being tested. The hardness is shown gage, depth-A tool used in measuring the
dead smooth-The finest cut of a file. of a structure by means of bushings, by the dent the file makes. depth of holes or recesses.
deburr-To remove sharp edges. guides the drill so that the holes are fillet-A curved surface connecting two gage, drill-A flat steel plate drilled with
decalescence-A decrease in temperature properly located. surfaces that form an angle. holes of various sizes, each marked with
that occurs while heating metal through drill rod-A high-carbon steel rod fishtail-A common name for the center the correct size or number into which small
a range in which a change in structure accurately ground to size with a gage. It is used to set thread cutting tools twist drills may be fitted to determine the
occurs. smooth finish. It is available in many and has scales on it for determining the size of their diameters.
dedendum-The depth, or that portion of sizes and is used extensively in tool number of threads per inch. gage, drill point-A gage use to check the
a gear tooth from the pitch circle to root making. fit-The relation between mating or 59° angle on drills.
circle of gear. drill sleeve-An adapter with an internal matching parts, that is, the amount of or gage, feeler (thickness gage)-A gage
diametral pitch-Ratio of the number of and external taper which fits tapered shank lack of play between them. consisting of a group of very thin blades,
teeth on a gear to the number of inches of tools such as drills or reamers to adapt fitting-Any small part that is used in each of which is accurately ground to a
pitch diameter or the number of teeth to them to a larger size machine spindle. aircraft construction. specific thickness.
each inch of pitch diameter. drill socket-An adapter similar to a fixture-A production workholding device gage, indicating (dial indicator)-A gage
die-A tool used to form or stamp out sleeve except that it is made to adapt a used for machining duplicate workpieces. consisting of a dial, commonly graduated
metal parts also, or to cut external larger tapered-shank tool to a smaller Although the term is used interchangeably (marked) in thousandths of an inch, which
threads. size spindle. with a jig, a fixture is not designed to guide is fastened to an adjustable arm or holder.
die stock-The frame and two handles drill, twist-A metal-cutting drill, the cutting tools as the jig does. gage, radius (fillet gage)-Any number of
(bars) which hold the dies (chasers) usually with two flutes running around flange-A relatively thin rim around small, flat, standard-shaped metal leafs or
used for cutting (chasing) external screw the body. a part. blades used for checking the accuracy of
threads. drive fit-One of several classes of fits in flash-A thin edge of metal formed at the regular concave and convex surfaces.
dividers, spring-Dividers whose legs are which parts are assembled by pressing or parting line of a casting or forging where it gage, screw pitch-A gage consisting of
held together at the hinged end by the forcing one part into another. is forced out between the edges of a form a group of thin blades used for checking
pressure of a C-shaped spring. ductility-The property of a metal that or die. the number of screw threads per unit of
head (index bead)-A machine tool permits it to be drawn, rolled or hammered flute-The groove in a cutting tool distance, usually per inch, on a screw, bolt,
holding fixture which positions the work without fracturing or breaking. which provides a cutting edge and a nut, pipe or fitting.
for accurately spacing holes, slots, flutes eccentric-A circle not having a geometric space for the chips to escape and gage, surface (scribing block)-A gage
and gear teeth and for making geometric center. Also, a device such as a crankshaft permits the cutting fluids to reach the used to check the accuracy of plane
shapes. When geared to the table lead or a cam for converting rotary motion to cutting edges. surfaces, to scribe lines at desired
screw, it can be used for helical milling reciprocating motion. fly cutter-A single-point cutter mounted distances from a given surface and to
operations. element-Matter which cannot be broken on a bar in a fly cutter holder or a fly cutter check the height of a point or points on a
do-all saw-A trade name for a type of up into simpler substances by chemical arbor, used for special applications for piece of work from a given surface.
band saw used for sawing metal. action, that is, whose molecules are all which a milling cutter is not available. gage, telescoping-A T-shaped gage used
dog-A clamping device (lathe dog) used composed of only one kind of atom. follower rest-A support for long, slender to measure the diameter or width of holes.
to drive work being machined between elongation-Lengthening or stretching out. work turned in the lathe. It keeps the work gang milling-A milling setup where a
centers. Also, a part projecting on the emery-A natural abrasive used for light from springing away. number of cutters are arranged on an
side of a machine worktable to trip the grinding and polishing.Though highly footstock-Part of an indexing attachment arbor so that several surfaces can be
automatic feed mechanism off or to effective, it is being largely replaced by which has a center and serves the same machined at one time. It is used for
reverse the direction of travel. artificial abrasives. purpose as the tail stock of a lathe. production purposes.