Tweco QWT-3 Quick Wire Trim Unit - Manual (Page 10)

QUICK WIRE TRIM UNIT
3-6 SM-QWT-3 inSTAllATion And opeRATion
CONDUCTOR
TUBE
NOzzLE/
WIRE
CUTTING BLADE
Figure 7: Conductor Tube/Wire and Blade
NOTE
The cutting blade can be rotated to extend the
life of the cutting blade. To rotate the cutting
blade, the following steps must be followed:
A. Remove the ¼”-20 shoulder screw located on
the under side of the mounting block of the
QWT-3 unit. Refer to Figure 8.
B. Loosen the 10-32 socket head cap screw on top
of the QWT-3 unit until the wire guide can be
removed. Refer to Figure 9.
10-32 SOCKET HEAD
CAP SCREW
WIRE GUIDE
Figure 9: Location of the 10-32 Socket Head Cap Screw
C. Rotate the cutting blade 180º so that the new
cutting edge is facing away from the QRC™-
2000 cleaning station. Be sure to position the
¼” (6,35mm) diameter hole over the dowel pin
located on the pivot arm. Refer to Figure 10.
Figure 10: Dowel Pin Alignment
DOWEL PIN
BLADE
WIRE
GUIDE
DOWEL
PIN
PIVOT
ARM
D. Place the wire guide back into position and
thread the ¼”-20 shoulder screw back into the
mounting block and secure.
E. Tighten the 10-32 socket head cap screw wrench
tight.
9. Activate the cleaning station such that the clamping
arm moves to the clamped position and then returns
to the unclamped position.
10. Move the robot arm away from the wire trim unit/
cleaning station.
11. Begin the welding process.
SHOULDER
SCREW
SHOULDER
SCREW
Figure 8: Shoulder Screw