| 摘要 |
PURPOSE:To avoid the stopping of assembly work and selection work and to shorten the production lead time by always securing the parts meeting the conditions of combination with each other in the buffers classified according to the kinds of dimensional ranges of the part in selection process. CONSTITUTION:A real parts dimension presuming section 1-1 may not be free from error between real and measured dimensions due to cutting heat, cutting oil, etc. during machining process. In order to compensate this error, the error due to the causes described above is examined before available machining to make a presumed model and store it in a memory section 1-5. The real dimention of parts is pre-umed by compensating the dimension having been measured by a measuring instrument 1-3 on the basis of this model. And in a take-out buffer determination section 1-2, the number of parts in each of the pallet classified according to the dimensional ranges on the basis of the presumed dimension described above is calculated. On the basis of calculated number, the number of parts to be supplied in future to each of the buffers classified according to the kind of parts and dimensional ranges is predicted. In the next step, on the basis of this predicted number, the number of inventry in each of buffers in future is predicted. Since the buffers are taken out on the basis of the number of inventry in future, the parts meeting the conditions of combination with each other can always be secured. |
