Manufacturing engineering Machine Tools (1)

What is machining?

subtractive process where you gradually remove material by a controlled process

What is cutting

material removed in small segments like chip

What do you need to remove material

a cutting tool and relative motion between cutting tool and workpiece

2 other subgroups of machining

heatbased processes (laser) and electro-chemical machining (electro-discharge machining)

drilling

process to produce holes, cutting achieved by overlaying to axis motions: rotation around tool axis and linear movement along tool axis

how is the cutting motion and feed motion achieved in milling

-uses multipoint cutting tools

-tool rotates around its axis

-feed motion can be carried out by both workpiece or tool

what is turning

process to produce axis-symmetric parts

what is a machining center

machine tools equipped with a tool magazine,

so can carry out tool changed

3 common types of milling machines

bed type, bench type, gantry type