Pro′fil-ing-ma-chine′.
One by which an object of a given contour or outline may be duplicated; or one by which a given profile may be given to a piece by adequate manipulation of the parts, in the
[
1806]
absence of the pattern which forms an automatic guide for the tool.
In the former case, the machine is used for duplicating templets, gages, and patterns, now so much used in making various machines, a great number to an exact size and proportion, to be afterward assembled.
Locomotives,
sewing-machines, firearms, watches, and many other articles are thus made.
(See assembling.) The machine shown in
Fig. 3969 partakes of some of the characteristics of the carving-machine (which see), and also of the lathe for turning irregular forms (which see). In each case the principle of action is that of two corresponding mandrels moving in concert, one having a pin which traverses the outline of the object to be copied, and the other having a cutter which moves around the object to be cut in a path corresponding to that of the pin which is guided in contact with the edge of the pattern.
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Profiling-machine. |
In the instance illustrated, the pin
a is on the mandrel
c, and the cutter
b on the mandrel
d; these are geared together and rotated, the pin
a being kept in contact with the pattern
e, while the cutter is rotated in contact with the work
f in and out and around as the contour of the pattern may govern the pin.
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Penetration of projectiles. |
