Answer :
Final answer:
The two steadies normally used in a center lathe are the fixed steady and the traveling steady. They act as support mechanisms to avoid deflection under the cutting force. A wheel and axle and a wedge are examples of simple machines that have analogous functions to the steadies.
Explanation:
The two steadies normally used in a center lathe are the fixed steady (or steady rest) and the traveling steady. The fixed steady is used to support long workpieces that could deflect under the cutting force. The traveling steady is used to support the work near the cutting tool, moving alongside the carriage during a machining operation. These steadies act as support mechanisms much like the wheel and axle, a simple machine consisting of a rod fixed to the center of a wheel.
Another simple machine relevant in this context is the wedge, a device consisting of two back-to-back inclined planes. While a wedge is not directly equated with a steady in a lathe, its mechanical advantage lies in its ability to split or separate workpieces, a function that indirectly complements the steadies' role of support and stabilization in a center lathe.
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