Pragati BTP-100, Инструкция по эксплуатации

Страница: 6 / 31

BI-DIRECTIONAL TOOL TURRETS 7
Turret has two alternative positions for the connection of coolant pipe. Coolant passes through the drilled hole
in the body and enters the passage in the coolant ring (01 & 24). This ring has spring loaded coolant valve. Valve
button (130) continuously presses against coolant flange (26) fitted on indexing flange. Coolant ring as well as
coolant flange have provision for angular adjustment. Coolant flange should be adjusted to align the ‘O’ rings
(37) with coolant passages on tool disc. Coolant ring should then be adjusted to align the coolant valve with the
proper hole on the coolant flange (ref. 4.1). There are 2 valve positions on the coolant ring. Only one of the
positions is to be chosen as functional, and should be fitted with the spring loaded valve button (130). The other
valve positions should be blocked by plug (136).
This design ensures that the coolant is connected only to the working tool position. Coolant flow automatically
stops during the indexing movement, as the coolant flange closes the opening of the valve button.
Coolant passage through the turret body, coolant ring and the valve has been designed to provide as little
resistance to coolant flow as possible. However, the path is long and narrow, with a number of bends in the flow
passage. Furthermore, coolant has to pass through drilled passages in the tool disc, before reaching the tool
point. It might therefore be necessary to employ high pressure coolant pump, to ensure sufficient flow at tool
point. Coolant passages in tool turret can withstand a maximum pressure of 6 bar.
4.1 Procedure for adjustment of coolant ring :
Coolant ring holds on to the indexing flange (27), because of the friction of wiper seals. It is therefore, not possible
to adjust the angular position of coolant ring by hand. Following procedure is to be followed for this adjustment.
* Loosen clamps (140). Move the coolant ring along with indexing flange by hand cranking (Ref.section 8,page
11) to required position. Tighten clamps (140).
INDEXING
FLANGE (27)
CLAMPS FOR
COOLANT FLANGE
(137)
COOLANT FLANGE CLAMPED
TO INDEXING FLANGE (26)
CLAMP FOR
COOLANT RING
(140)
COOLANT VALVE
ADJUSTMENT RANGE
COOLANT VALVE ALTERNATE
POSITION AVAILABLE ON
OPPOSITE SIDE.
COOLANT ENTRY POSITION
AVAILABLE ON OPPOSITE SIDE.
20°
20°
4. Operation of Coolant system :
FIG 4.1
COOLANT
RING (24)
4.2 Replacement of Valve Button ( fig. 4.2 ) :
Valve button(130) rubs against the coolant flange during
indexing, and is liable to wear. Provision has been made
to replace the button, without removing the tool disc from
the turret.
For replacement, loosen the clamp (140) and move the
coolant ring to bring the valve in a suitable position to get
access to the plug (134).
Remove the plug, the spring and the valve button. Replace
with a new button, and place back the spring and the plug.
Coolant ring should then be shifted back and clamped in
original position.
01
26
24
134
37
136
FIG 4.2
27
130