This slide show accompanies the learner guide "Mechanical Technology Grade 10" by Charles Goodwin, Andre Lategan & Daniel Meyer, published by Future Managers Pty Ltd. For more information visit our
This slide show accompanies the learner guide "Mechanical Technology Grade 10" by Charles Goodwin, Andre Lategan & Daniel Meyer, published by Future Managers Pty Ltd. For more information visit our website www.futuremanagers.net
Automatic turning is useful in long traverses, the steady movement of the carriage giving a superior finish to that usually obtained by hand feeding.
With automatic feed it is possible to maintain a constant cutting speed since the speed at the work periphery will be at its maximum and this will be reduced towards the centre.
Most modern centre lathes are fitted with safety devices which will either prevent accidental engagement of more than one feed at the same time, or, in the event of two feeds being engaged together, prevent damage being done, for example the clutch mechanism slipping or a shear pin breaking under an abnormal load.
A milling machine provides cutting action to a rotating cutting tool.
In milling, a multi-toothed cutter rotating at a fixed position on the machine shapes the work as it is traversed across the cutter.
The work piece is firmly and safely secured in a machine vice or on the machine table, which can be adjusted to set the depth of cut and can be traversed in at least two directions in the horizontal plane.