| 摘要 |
<p>PURPOSE:To set cutting length in one-touch while improving the accuracy of cutting, and to prevent the several, minute alteration of mechanical, synchronous setting in response to cutting length, by performing numerical-value control servo in place of a speed change mechanism for setting cutting length. CONSTITUTION:When a rotary arm 22 is revolved by means of a motor 20 in a sweep spacing cutter, one portion of a rotary locus of a cutter 26 rotated by means of a motor 25 passes through a travelling passage of a material 12 and the material is cut at the location. In this case, pulses in number corresponding to the moving length of the material 12 are generated from a measuring encoder 27, and output pulses are delivered to an adder 33 through a speed reference generator 29 and compared with output from an encoder 34 for detecting the revolution of the cutter and the output of an adder 39 to which signals passing through a syncrhonous set length set circuit 32 and a correction operation circuit 43 of a cutting length set circuit 42 are input. Said motor 20 is manufactured so that it is controlled by the output of the adder 33.</p> |
