MILLING MACHINE OPERATIONS - OD1644 - LESSON 1/TASK 1
(d)
The Brown and Sharpe taper is found mostly on older machines.
Adapters or collets are used to adapt these tapers to fit the machines whose
spindles have milling machine Standard tapers.
(e)
The Brown and Sharpe taper with tang also is used on some of the
older machines. The tang engages a slot in the spindle to assist in driving
the arbor.
(2)
Standard Milling Machine Arbor (figure 4 below, and figure 5 on page
13).
(a)
The Standard milling machine arbor has a straight, cylindrical
shape, with a Standard milling taper on the driving end and a threaded
portion on the opposite end to receive the arbor nut. One or more milling
cutters may be placed on the straight cylindrical shaft of the arbor and
held in position by means of sleeves and an arbor nut. The Standard milling
machine arbor is usually splined and has keys, used to lock each cutter to
the arbor shaft.
Arbors are supplied in various lengths and standard
(b)
The end of the arbor opposite the taper is supported by the arbor
supports of the milling machine. One or more supports are used, depending
on the length of the arbor and the degree of rigidity required. The end may
be supported by a
FIGURE 4.
STANDARD MILLING MACHINE ARBOR INSTALLED.
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