How to improve traverse accuracy of the reed framing machine

Update:29-06-2018
Summary:

The working principle of the reed framing machine is to […]

The working principle of the reed framing machine is to convert the rotary motion of the motor into the linear motion of the comb through the ball screw, and realize the traverse of the comb. The precision that affects the traverse of the comb bar includes the precision of the ball screw, the drive precision of the servo motor and the ball screw, and the axial positioning accuracy of the bearing positioned on the ball screw.

Under normal circumstances, the swaying range of the comb is small, and the ball screw reciprocates at a high speed for a long time in a range of small displacement, which easily causes local wear and reduces accuracy, and this influencing factor is difficult to solve. The servo motor of the reed framing machine and the ball screw are connected by a timing belt.

The transmission efficiency of the timing belt, the return clearance and the elastic deformation of the timing belt affect the accuracy of the movement of the comb stroke. The direct connection of the servo motor and the ball screw can solve this influencing factor. However, the direct connection structure is not suitable for applications where the traverse mechanism has a high external dimension.

Comb rod length influences traverse accuracy of the reed framing machine

In the circle forming process of the reed framing machine, the comb moves in a swinging and traversing motion. If the comb stroke is zero, the swing curve is the arc centered on the outer end of the comb bar, and the length of the comb bar is longer. The smaller the arc of the comb, the greater the opposite. Even if there is no traverse, the comb will have a certain amount of traverse movement due to swing. The shorter the length of the ram, the greater the deviation of the traverse, so the length of the ram is as long as possible.

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