LATHE OPERATIONS - OD1645 - LESSON 1/TASK 1
LESSON 1
THE LATHE USES AND SAFETY; USES, REPAIR, AND
ADJUSTMENT OF LATHE ATTACHMENTS; AND VARIOUS
THREAD FORMS, USES, CALCULATIONS, AND
MACHINING TECHNIQUES
TASK 1.
Describe the uses of the lathe, to include safety.
CONDITIONS
Within a self-study
environment
and
given
the
subcourse
text,
without
assistance.
STANDARDS
Within three hours
REFERENCES
No supplementary references are needed for this task.
1.
Introduction
Lathes were developed as early as the 15th century and were known as "bow"
lathes. The operator rotated the workpiece by drawing a bow back and forth,
either by hand or with the use of a foot treadle. Next came Bessons lathe
in 1568, which was driven by a cord passing over a pulley above the machine.
This in turn drove two other pulleys on the same shaft which rotated the
workpiece and a crude, wooden lead screw, which in turn allowed the operator
to remove metal from the piece being machined.
The screw cutting lathe
originates in the 17th century. Development and advancements have continued
and today we have sophisticated computerized controlled lathes.
Lathes have allowed man to reshape, machine and manufacture many precision
cylindrical components made of various types of metal, wood, plastics, and
other materials.
Without the lathe, man would still be trying to produce
cylindrical components
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