| 摘要 |
<p>PCT No. PCT/EP80/00091 Sec. 371 Date May 28, 1981 Sec. 102(e) Date Apr. 20, 1981 PCT Filed Sep. 3, 1980 PCT Pub. No. WO81/00866 PCT Pub. Date Apr. 2, 1981.The invention concerns an apparatus for controlling the rotational speed of the spindles of a spinning preparatory machine equipped with spindles and flyers. The proposed control arrangement comprises an infinitely variable variator, which is adapted or adjusted by using a control shaft which is rotatably indexed or stepped. The control or adjustment shaft is moved by a control motor which received its control or switching impulses from a motor control device comprising a programmable indicator or set value transmitter for the desired or set value and a correction element. According to a particularly advantageous design the correction element is of the form of a crossbar distributor arrangement. The apparatus is comfortable and easy to use by the operating personnel and permits, among other advantages, extremely accurate adaptation or adjustment of the spindle rotational speed. The adaption operations can be effected while the machine is running.</p> |
