| 摘要 |
<p>According to the method of the invention, the step motor (14) of the brake (20, 23, 24, 26) of the thread feeder, upon opening command ( to ), is driven in the direction of opening the brake, while counting the steps made by the motor until the brake is stopped by abutment against a travel stop (22), and storing the step count reached at the time of blockage ( step _ to _ open ). upon a subsequent closing command (t 3 ), the step motor is driven in a direction of closing the brake by a number of steps equal to the stored count.</p> |
