The Lathe #
The lathe is one of the most important machine tools. It produces parts with rotational symmetry (cylinders, cones, threads) by rotating the workpiece against a cutting tool.
Main Components #
Bed, headstock (motor + chuck), tailstock, carriage, cross slide, tool post, lead screw.
Operations #
Cylindrical turning, facing, drilling, threading, parting off, taper turning, boring.
Cutting Parameters #
- Cutting speed: \(V_c = \frac{\pi \cdot D \cdot n}{1000}\) [m/min]
- Feed rate (\(f\)): mm/revolution
- Depth of cut (\(a_p\)): \(\frac{D_{initial} - D_{final}}{2}\) [mm]
Lathe Types #
Engine lathe (manual), turret lathe, vertical lathe, CNC lathe (computer-controlled, for production).
Safety #
Never touch rotating workpiece. Always wear safety glasses. No loose clothing or jewelry.
Conclusion #
The lathe is the quintessential machine tool: simple in principle but capable of very precise work. It’s foundational knowledge for any mechanical technician.
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