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Shaft Rotation Top towards or Top away

Top Towards    linear-drive  Top Away    traverse-system

Operation Guide

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.

Pitch :

The pitch is the linear movement of the traverse unit for one rotation of shaft. Pitch is maximum at setting 10 on the dial. The pitch is controlled very finely adjusted by shifting the pointer lever along the dial. Traverse unit need to be operated above setting 1 of the dial for accuracy and optimum performance.

Adjusting the Pitch :

Pitch can be varied by pressing the pointer lever down and shifting along the dial positions. Pitch is Maximum at setting 10 of the dial and near zero at setting 0 of the dial. Ensure to disengage pointer fully from dial by pressing before shifting along the dial to prevent damage to pointer or dial.

Linear Speed :

Linear speed depends on shaft RPM and Pitch setting.

Shaft speed :

Shaft speed required for an application is calculated with reference to maximum pitch of traverse unit used and maximum linear speed. Shaft speed = Max linear speed / 0.95 X Maximum pitch of traverse unit.

Winding application

For Winder, drive to traverse shaft is transmitted from bobbin drive shaft ensuring speed synchronization between bobbin speed and traverse speed.

Shaft Speed :

For optimum performance and for precision control of pitch, it is recommended to maintain the speed ratio between bobbin drive to traverse drive as calculated below,

Shaft Speed :

For optimum performance and for precision control of pitch, it is recommended to maintain the speed ratio between bobbin drive to traverse drive as calculated below,

Speed Ratio Dr / Ds = 0.95X Maximum Pitch of Traverse unit
Maximum Pitch required

Dr = Diameter or Number of teeth of Pulley or sprocket on Traverse shaft

Ds = Diameter or Number of teeth of Pulley or sprocket on Spool drive shaft


Layer Winding of Round or Flat material :

For layer winding, speed ratio between bobbin drive and traverse drive is calculated as below. It is necessary and critical for getting layer winding and fine adjustment of pitch.

Dr /Ds = 0.95 X Maximum Pitch of Traverse unit
Maximum Pitch required

With above speed reduction maximum pitch of traverse unit is matched with maximum diameter or width of material to be layer wound. Reversal end limits also needs to be set precisely in line with bobbin flange.


Maximum Insertion Depth of Mounting Screw :

Four number threaded holes are provided on the traverse unit for mounting assembly to be traversed.

Please ensure that the length of bolt used does not exceed insertion depth N and penetrate inside the box to prevent damage.

Refer Fig 63 for maximum insertion depth of bolt pertaining to the traverse unit.


Assembling Traverse unit on the Shaft

Traverse unit is assembled on the shaft like a nut on to a threaded shaft. Set the pitch to maximum. Insert one end of the shaft in to the traverse unit and rotate the shaft and traverse unit will move on to the shaft. Do not use force and traverse unit moves on to the shaft very smoothly by rotating the shaft. Traverse unit is removed from the shaft similarly. Shaft end may be chamfered to 2 X 30°,to avoid damage to rolling-rings during installation.

Reversal Time

The reversal of direction of movement of traverse unit is instantaneous and automatic. 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 speed and linear speed.

Consequently when pitch of the traverse unit or shaft speed is increased, there can be slight variation in traverse stroke length and vice versa.

Refer fig 73 showing reversal time at various pitch settings.