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DIFFERENT TYPES OF MACHINE TOOLS - Coggle Diagram
DIFFERENT TYPES OF MACHINE TOOLS
what are machine tools
power driven
revome the excess material
from workpiece
one or more tools
The first one occurs when the metal moves against the tool
the second one occurs when the tool and the metal come into contact on different points and surfaces
the cutting process is the result of two movements between the cutting tool and the materia
the categories of machine tools
six categories
milling machines
planing machines: smooth materials which move under the cutting tool
turning machines shape piece by rotating it against cutting tool
grinding machines: are used for shaping a piece by putting it into contact with a rotating abrasive wheel
drilling: cut holes using a rotating drill and smooth them
matel forming machines: shape workpieces
some are big
workbench
drilling machine
holes in metals
simple models
have a base
column positioned
on it there is
vice (morsa)
clmaps
The motor is contained in the head and it turns the spindle, which carries a drill chuck to hold the drill
remove material
how
rotating tool
other operation
reaming (alesatura)
threading (filettatura)
countersinking (svasatura)
turning machines
centrals lathes
shape a piece
consisnt of:
headstock
carrige
apron
tool post
A lathe consists of a headstock, generally put on an end of a bed; a spindle; and a carriage which supports the cutting tool and is composed of a saddle, an apron and a tool post
If a workpiece is placed between the headstock and the tailstock, it is said to be “between centres
can distinguish
bench lathers: that are put on a table or benc
vertical lathes: that have a vertical axi
turred lathers
multispindle lathers: an have many spindles
CNC lathers
milling machines
used for
simple shapes
flat surfaces
workpiece comes into contact
based vertical or horizontal
can disitnguish
universal type: where the rotated cutter can be oriented both vertically and horizontally
knee-type: which can be both horizontal and vertical
The workpiece is held in a vice and is positioned on a movable table. The motor-driven spindle mounts and rotates the milling cutter.