Taper Turning Using Tailstock Set-Over
Work to a side angle of 5
°
can be turned by setting
over the tailstock (the angle depends on the length of
the workpiece).
If the smaller diameter of the taper is at the tailstock
end, the tailstock must be moved towards the lead
screw.
To set over the tailstock, slacken the locking screw 1.
Unscrew the front adjusting screw 2.
Screw in the rear adjusting screw 3 until the required
taper has been reached. Tighten the front screw to lock
the tailstock in position.
The workpiece must be held between two centres and
driven by driving plate and driver.
After taper turning the tailstock is returned to its ori
ginal position. The zero position of the tailstock is
checked by turning a test piece, with constant adjust
ment until the piece is absolutely cylindrical.
Taper Turning by Setting the Top Slide
By angling the top slide , tapers can be turned.
Swivelling the top slide:
After loosening the two screws 1, the top slide can be
swivelled.
A graduated scale permits accurate adjustment of the
top slide. This method can only be used for short ta
pers.
Turning Between Centres
For turning between centres it is necessary to remove
the chuck from the spindle. It is held by three hex
headed nuts M8.
The centre MT 3 is fitted into the spindle nose, the
driving pin is inserted in one of the three holes and
locked by a nut.
Fit revolving centre into the tailstock, mount work
piece, fitted with driver, between the centres.
10
Содержание compact 8
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