Taper turning

taper method by tail stock offsetting and taper attachment

1. PRACTICAL MANNUAL
OBJECT: To form taper by using tailstock offsetting method and taper
attachment method.
PROCEDURE:
OFFSETTING THE TAILSTOCK:
For tapers on longer shafts, you can offset the tailstock from the Centre line.
Calculations on the offset will be needed

 As the amount that of the tailstock may be limited so it is used to cut taper
on small angles when to taper attachment is available.
 Offset the tailstock to the obtained value from the above mentioned
formula
 Touch the tip of dial indicator to one end of tailstock and displace from
another end by applying force to the desired distance.
 The clamp the job between the chuck and revolving center.
 Simply turn the job you will get the required taper.

2.  The tailstock must be reset after taper turning; the offset will not be
obvious to another user.











BY TAPER ATTACHMENT METHOD:
For longer tapers you can use a Taper Turning Attachment for both either
external or internal tapers.
. • They attach to the lathe bed.
• Having set the angle on the attachment, the cross slide is moved producing the
taper as the saddle moves along the bed.




tailstock headstock
work piece
Taper attachment
Compound rest

3.  In taper turning attachment bed clamp is to attach it with bed of the lathe
machine.
 Spline screw is attached to the cross slide to move the cross slide according
to the desired angle.
 Lock nut is used to lock the taper bar while the taper angle is adjusted by
the taper adjusting screw.
 Taper slide has readings to make adjustments.
 First loose the lock nut of both sides and set the desired angle by adjusting
screw.
 Clamp the job between chuck and tailstock.
 Start turning your job, you will see cross slide is moving with the angle you
have set to the taper attachment , thus you get the desired taper.