Turning a Long Taper
----- Original Message -----
From: Glen Barrett
To: Keith Turk
Sent: Monday, May 29, 2006 4:16 PM
Subject: Fw: Emailing: mlathe3
Keith
Found this on google
Glen
----- Original Message -----
From: Glen Barrett
To: Glen Barrett
Sent: Monday, May 29, 2006 4:15 PM
Subject: Emailing: mlathe3
CLICK HERE FOR INDEX PAGE
TURNING A LONG TAPER
V. Ryan ) 2003
Turning a taper on a long piece of material is best achieved by
offsetting the tailstock. The material is held between two centres as a normal
three jaw chuck cannot be used. A three jaw chuck will not hold the material
safely or accurately when a long taper is being turned. Diagram A below
shows the side view of the two centres, the material and the toolpost.
Diagram B shows a birds eye view (plan view) of the same equipment.
However, this time it can be seen that the tailstock has been adjusted so that
it is off centre. This means that a long taper can be turned. A small amount
of material must be removed with each pass of the cutting tool. Also the lathe
should be setup so that the cutting tool feeds automatically along the bed of
the lathe. This will lead to a better finish to the surface of the material.
The animation below shows a 'speeded up version' of taper turning. Normally
taper turning takes along time.
Diagram C shows the scale at the back of the tailstock. To adjust the
tailstock so that it is off centre usually means loosening a number of allen
screws, offsetting the tailstock and then tightening the screws back in
position.
QUESTION:
Using diagrams, explain how a long taper can be turned using the centre
lathe.
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