Yamato TC 350/13 Instruction Manual page 23

Attaching the adjustable eye guard
WARNING: NEVER ATTEMPT TO USE THE MACHINE
WITHOUT THE EYE GUARD
Slacken the screw on the side of the guard. Position over the
spindle collar and secure screw. The eye guard is spring loaded
and on a hinge which allows the guard to be moved upwards to
expose the chuck for drill installation and removal. Always return
the guard to cover rotating parts. The eye guard is adjustable
to varying depths to give more protection. Simply unscrew the
wing nuts and the two piece guard will extend vertically up or
down.
FITTING THE 3 JAW CHUCK (PICS. 14 & 15)
Industry uses the "Morse taper" system to fit drill bits, chucks
and adaptor sleeves. The Taper system comprises of taper
shank (Pic.14) (14.1) and tang (Pic.14) (14.2).
NOTE: For the "Morse Taper" system to work correctly the
internal and external tapers must not be damaged and must be
kept thoroughly clean.
Clean the protective film from the chuck shank and the drive
spindle internal taper with white spirits. Insert the chuck shank
into the drive spindle internal taper (Pic. 14).
TC 350/13: This machine is supplied with a Morse taper
stub shaft fitted into the spindle (Pic. 14B) (14B.1). To fit the
chuck: clean the protective film from the chuck internal taper
and the stub shaft external taper with white spirits. Place the
chuck onto the exposed stub shaft (Pic. 14B) (14B.2).
Place a piece of wood onto the table. Using the feed handles
lower the chuck onto the wood (Pic. 15). Gently apply pressure
to engage the taper and then let the spindle raise to its upper
position.
The drill is now fully assembled and secured in position. The
following adjustments and setting up instruction must be carried
out before connecting the machine to the mains supply.
ADJUSTMENT AND SETTING UP INSTRUCTIONS
ADJUSTING THE TABLE HEIGHT (PICS. 16 & 17)
To adjust the table height, slacken the clamping lever at the rear
of the table support assembly (Pic. 16).
Locate the winding handle and raise table up or down to desired
height (Pic. 17). When the desired height has been achieved, do
not forget to re-secure the clamping lever.
TILTING THE TABLE ± 45° (PIC. 18)
Locate the securing bolt underneath the table (Pic. 18) With a
suitable socket loosen the bolt. On the table support assembly
casting there is a graduated 0 - 45° scale (Pic. 19C) (19C.1). Set
the table to the required angle and re-tighten the bolt.
NOTE: The graduated scale is for guidance only we recommend
the use of an engineers protractor when setting any angles
WORK TABLE SWING 360° (PICS. 19 - 19B)
The work table can swing through 180° to the rear of the
machine in each direction 360°. This will allow larger work
pieces to be accommodated on the base plate. Simply unclamp
the table (Pic. 19 - 19B) and manoeuvre either clockwise or anti-
clockwise to the rear of the machine.
QUILL SPRING ADJUSTMENT (PIC. 20)
WARNING: The quill spring is under extreme tension.
The quill spring is located in a chrome housing on the opposite
side of the feed shaft boss and returns the spindle to its
uppermost position. Adjustment is normally only required after
many hours of use when it fails to return the spindle to its
uppermost position. With the spindle in its uppermost position it
can be seen that the chrome cover has a total of three notches
(Pic. 20) (20.2) cut into the edge that align with the cast body of
the head stock. One of these notches is located on to a cast peg
(Pic. 20) (20.3) that is part of the main casting. (Pic. 20).
WARNING: Before slackening the lock nuts ensure that the
chrome housing is held securely with a suitable grip or wrench.
If not held securely the quill spring will fully uncoil.
Carefully slacken the lock nuts (Pic. 20) (20.1) only enough to
allow the chrome housing to be pulled out far enough to just
clear the cast peg (Pic. 20) (20.3) while holding the chrome
cover with suitable grips. The spring is still under tension and
will try to uncoil as soon as it is released so be sure to resist the
torque. As soon as the chrome housing is able to clear the cast
peg, turn the chrome housing in an anti-clockwise direction until
the next notch locates onto the peg. While holding the chrome
housing in this position tighten the lock nuts. Do not over tighten
otherwise you will damage the chrome cover.
SPINDLE PLAY (PIC. 21)
Locate the spindle play adjustment set screw (Pic. 21). Loosen
the lock nut and finger tighten the grub screw. Hold the grub
screw into position with a screwdriver and tighten the lock nut.
USING A MACHINE VICE (PIC. 22)
WARNING: The drill should never be used without the work
piece being securely held in a machine vice or clamped directly
to the drill table. The drill table is designed to accept a variety
of machine vice which can be fastened directly to the drill
table; Pic. 22 gives an indication as to the type of machine vice
required.
Always secure the vice to the table with bolts, washers and nuts.
If the drill jams into the work piece an unsecured machine vice
will spin out of control causing the drill to snap and possibly
injure the operator.
USING THE 3 JAW CHUCK (PIC. 23)
Select the drill bit required and from the drill speed table (Pag. 31
- Chart 1, pag. 15) select the correct speed. Open the jaws and
insert the drill shank centrally into the chuck (Pic. 23). Rotate
the chuck by hand until the jaws grip the drill bit. The chuck
has three holes around the chuck body. Locate the chuck key
and using an even torque move from each hole location until all
three holes have been covered. Continue with the steady torque
until tight. Do not over tighten otherwise you will have difficulty
removing the drill bit.
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