Maximum Side Thrust (Force) : Maximum side thrust is the force that can be safely applied. Traverse unit will slip on the shaft when the force exceeds the maximum rated thrust of the model.
Maximum Pitch : The maximum pitch is the movement of traverse unit at setting “10 “ on the dial for one rotation of shaft. The pitch is varied very finely by shifting the pointer lever along the calibrated dial. The pitch will be near to zero at setting “0” of the dial. Traverse unit needs to be operated above setting “1” of the dial for accuracy and optimum performance.
Adjusting the Pitch : Pitch can be varied very finely by pressing the pointer lever down and shifting along the dial position between 0 to 10. Pitch is Maximum at setting 10 on the dial and near zero at setting 0 of the dial. Recommended to disengage pointer fully from the dial by pressing the lever before shifting to prevent damage to pointer and dial.
Linear Speed : Shaft RPM X pitch is the linear speed. Linear speed can be varied by changing the pitch or shaft speed .
Shaft speed : For Optimum performance the required shaft speed required is calculated based on maximum pitch of the traverse unit and required maximum linear speed.
In winding application drive to traverse shaft is provided from bobbin drive shaft for automatic synchronisation with bobbin speed to maintain the pitch set as constant during the winding
Recommended Speed Ratio between bobbin drive shaft to traverse shaft for optimum performance.
Dr/Ds = 0.95 X maximum pitch of model / maximum pitch required.
Dr = Diameter of the pulley or Number of teeth of the sprocket / timer pulley on traverse shaft
Ds = Diameter of the pulley or Number of teeth of the sprocket on Spool drive shaft.
Layer Winding of Round or Flat material :
For layer winding the pitch setting needs to very adjustable and maximum movement of traverse unit per rotation should be equal to max diameter of wire to belayer wound or maximum width of flat conductor to be layer wound as applicable.
The recommended speed ratio between bobbin drive shaft to traverse drive shaft is calculated as below.
Dr/Ds = 0.95 X Maximum pitch of model / Maximum diameter or width of material.
With above speed reduction maximum pitch of traverse unit is matched with maximum diameter or width of material to be layer wound.
Reversal end limit is to be set precisely in line with bobbin flange.
Maximum Insertion depth of mounting screw :
Four number tapped holes are available on the traverse unit for mounting guide assembly. The length of bolt used should not exceed the maximum insertion depth . If more length bolts are used it will penetrate inside the box and obstruct movement of reversal mechanism causing not reversing and difference in speed for left side and right side movement.
Please ensure that the length of bolt used does not exceed insertion depth “ N “ specified against the model to prevent damage and malfunctioning. Refer Fig 63 for maximum insertion depth of bolt.
Assembling Traverse unit on the Shaft : : Traverse unit is assembled on to the shaft like a nut on a threaded shaft. Procedure : Set the pitch to 10 on the dial and insert one end of the shaft in to the traverse unit, rotate the shaft in clockwise or anti clockwise direction as required. Traverse unit will unit will move on to the shaft very smoothly. There is no need to use any force. When the reversal lever is operated traverse unit will move to opposite side for same direction of rotation of shaft. Please ensure that shaft used is having chamfered ends ( preferably 2X30°) to prevent any damage to Rolling Ring.
Removing traverse unit from Shaft : Traverse unit is removed from the shaft similarly by rotating the shaft.
Reversal Time : The Reversal of traverse unit movement is automatic and instantaneous. On making contact with end limit, the torsion springs of
reversal mechanism get charged and will trigger and force the reversal once the throw over position is reached.
The reversal time depends on shaft RPM and pitch setting of traverse unit. Refer fig 73 showing reversal time at various dial positions
Traverse units are normally supplied as topTowards for clockwise rotation of shaft unless otherwise specified.
Instructions for modifying traverse unit from clock wise direction to anticlockwise direction of rotation of shaft and vice versa:
Traverse unit is easily modified from Clockwise direction to Anticlockwise direction or Anti clock wise direction to clockwise direction, simply by altering the position of Reversal mechanism without opening the unit.
Please follow the instructions below. The Reversal mechanism is removed and refitted with a 180° turn of the Reversal lever.
a) Remove Release lever by loosening the bolt
b) Remove springs and reversal Lever
c) Remove striker plate
d) Refit striker plate on opposite side
e) Reversal lever is refitted with 180° turn from the previous position
f) Re assemble the springs and release lever and tighten the bolt.
Please ensure that lug of springs are not bend during refitting. long lug of spring is inserted in Reversal lever and short lug in the Release lever. Please lubricate springs with oil or grease.
g) Operate reversal lever manually and observe the knocking sound. Traverse unit is now ready to operate in opposite direction of shaft rotation.
Lubrication of shaft : Apply only a very thin film of oil . Clean the shaft and spread the oil as thinly as possible. We recommed cleaning the shaft every shift in very dusty environment to prevent accumulation of dust on the shaft causing wear out of rolling rings and shaft.
Lubricate the reversal mechanism, particularly the springs with high viscosity machine oil SAE 90 or equivalent.
Frequency: Weekly . When the operating conditions
When the opening conditions are severe like extremely dusty corrosive environment or for high temperatures, shorter lubrication intervals is recommended.
Loss of Side Thrust
Traverse units are factory set for side thrust as per specifications. If there is any deterioration in thrust after a long period of operation due to wear out this can be compensated by adjusting the thrust screw provided. A large slotted screw is provided on the unit bottom side (side of Reversal mechanism)can be slowly tightened for adjustment. Should not be over tightened which will cause failure of operation of reversal mechanism. . The Rolling Rings can be replaced in case of excessive wear out.
Pitch change. Please press the pointer down and change the pitch to prevent damage to the teeth on the dial.