Description of the Operation
The operation of the lathe initiates when the operator walk to grasps a metallic plate, then he
attaches it to the machine, and fastens it with tools and clamps involving considerable effort.
Longitudinal and transverse movements begin to make the turning. Both hands in this action
are always on the levers and the operator is simultaneously watching the visual display or the
work piece, this requires high levels of control and coordination. (See Figure 2)
The operation with the milling machine starts when the operator twists his trunk to grasp
the material in the work table located behind him, and then he places the material at the base
of the machine and set the work piece using clamps, then uses several manual levers to
shape the piece. Each lever is used for specific machining purposes such as perform a deep
cut in a straight line or semicircular cuts among others.
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