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OPERATING INSTRUCTIONS.

CHUCK FITTING AND REMOVAL (PIC.8)

The chuck supplied with the machine is a three jaw self centring

chuck. The chuck is secured to the face plate with three socket
cap screws (Pic8) (8.1). Protect the lathe bed with a cloth or
a piece of wood. Because the space between the back of the

face plate and the head stock is restricted you will need to

use a cut down hex key. Remove the three socket cap screws
and remove the chuck. Re-fitting the chuck is a reversal of the
removal procedure.

CHUCK JAW CHANGING (PIC.9).

There are two types of chuck jaw that can be used with the three
jaw self centring chuck, for gripping the work piece externally

or for hollow work pieces internally. The jaws are located into
the  chuck  body  by  a  “Tee”  slot  (Pic9)  (9.1)  and  are  operated
by a spiral gear (Pic9) (9.2)  locating into a number of grooves
machined  into  the  back  face  of  each  jaw  (Pic9)  (9.3). As  the

chuck key is rotated the spiral gear rotates opening or closing

the jaws. When changing the jaws it is important that they
are removed in the correct order. Each jaw is identified with a

number stamped into its surface and corresponds with numbers
stamped into the jaw the locating groove in the body of the chuck

(Pic9) (9.4). When removing the jaws they must be removed in
the sequence (3-2-1). When fitting the jaws they must be fitted
in reverse order (1-2-3). When the jaws have been fitted, fully
close the jaws and check that they are all correctly located. If the

gripping surfaces do not meet together, remove the jaws and

repeat the procedure.

COMPOUND SLIDE (PIC.10).

The compound slide can be adjusted to allow the turning of
angled surfaces and to allow the correct positioning of the

turning tool in relationship to the work piece. To set the angle
required, slacken the two securing nuts (Pic10) (10.1), set the
required angle using the graduated scale (Pic10) (10.2) and re-
secure the two nuts.

TOOL POST (PIC11)

The tool post is mounted on top of the compound slide and can

accommodate up to four different turning tools (Pic11) (11.1).

The tool post can be rotated and locked into any position to
change to a different turning tool and to allow the correct
positioning of the turning tool in relationship to the work piece by

using the clamping lever located on top of the tool post (Pic11)
(11.2).

LEAD SCREW OPERATION (PIC.12).

The lead screw (Pic12) (12.1) performs two functions. It is
primarily used when turning screw threads. When the screw

thread gear train is set up for a chosen thread size engagement

of the lead screw using the lead screw engagement lever (Pic12)
(12.2) allows the longitudinal fed to operate automatically at the
correct speed to cut the chosen screw thread.

Note:

The lead screw requires manual dis-engagement at the

end of each screw thread cutting pass.

The second function is to provide automatic longitudinal drive to

the saddle when performing parallel turning. The speed of travel

will be determined by the screw cutting gear train set up and the

rotational speed of the main spindle.

TAIL STOCK (PIC13).

The tail stock is used to support long or thin work pieces, the

spindle is machined with an internal Morse taper.

and can accommodate a number of different types of Morse
taper centres, drilling chucks and other attachments that have a

Morse taper fitting (Pic13) (13.1). Centres and other accessories

can be removed by turning the hand wheel to fully retract the
tail stock barrel, additional pressure may be required at the end

of travel to release the taper. The tail stock can also be “Off
Set” to allow taper turning over longer lengths than cannot be
machined using the compound slide.

TAIL STOCK TAPER TURNING (PIC.14)

To set the tail stock for taper turning, slacken the tail stock

clamping nut (Pic14) (14.1) determine the direction the tail stock
has to be moved to give the desired taper. Slacken the off set

adjusting screw on the base of the tail, in the direction that the

tail stock is to be moved (Pic14) (14.2). By tightening the other

off set adjusting screw and observing the graduated scale at
the rear of the tail stock the amount of taper can be determined

(Pic14) (14.3).

Note.

Most good metal turning books will give the mathematical

formula for calculating the correct tail stock off set for a given

taper over a given length. If this formula is not available then

the trial and error method on a scrap piece of material will have

to be used.

Warning.

When using the tail stock off set facility for taper

turning do not over tighten the chuck to prevent straining the

chuck jaws.

THE “MORSE TAPER” SYSTEM.

This lathe can accommodate various sizes of centres, drill

chucks,  drill  bits  and  other  accessories.  Industry  uses  the
Morse taper system to fit accessories into drive shaft or spindle.
The “Morse Taper” system is a method of securing an external
(Male) taper securely into an internal (female) tapered shaft or
barrel.  These  tapers  are  referred  to  as  self  holding  because
they  stay  in  place  when  correctly  seated. This  system  allows

the easy changing of dead and live centres, drill chucks, drill

bits and other accessories. The internal and external tapers are
ground at an angle that allows the two tapers to lock together.

Various accessories including, centres, drill chucks, drill bits and
other accessories including adaptor sleeves to accommodate

various size of “Morse Taper” shank can be obtained.

Note:

For the “Morse Taper” system to work correctly the

internal and external tapers must not be damaged and must be

kept thoroughly clean.

Caution.

To prevent damage to the accessory or injury to the

operator carefully hold the accessory with a thick cloth or wear

welders type gloves.