11-05-1977 дата публикации
Номер: GB0001473167A
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1473167 Machine tool control TOYODA-KOKI KK and TOYOTA JIDOSHA KOGYO KK 23 July 1974 [24 July 1973] 32551/74 Heading B3B [Also in Division G3] A machine tool apparatus comprises a pallet storage area 13, loading and unloading stations 14, 15 where workpieces are mounted and demounted from the pallets, a plurality of machine tools grouped in modules M1, M2, M3, a main conveyer 11 for supplying pallets to the machine tools, a buffer conveyer 10 for storing pallets to be loaded on to the machine tools, a return conveyer 12 for returning pallets to the unloading station 15, pallet transfer means, e.g. rail-ways R1, R2, R3, R4, for transferring pallets between the conveyers 10, 11, 12 stations 14, 15 and machine tools, and a computer 52 central control means for controlling the apparatus, the pallet transfer means being responsive to the central control means for identifying a priority pallet and transferring it direct from the main conveyer 11 to one of the machine tools, whereas a routine pallet is transferred from the main conveyer 11 to the buffer conveyer 10 and from the buffer conveyer 10 to one of the machine tools only if the said machine tool is not reserved by a priority pallet and is not already occupied by another pallet. A pallet transfer device 19 is driven by a chain drive 20, 21, 23 along tracks of the rail-ways on rollers 18. A suspension device 26 is raised and lowered by a drive 24 and grips a pallet P mounting a workpiece W by a pair of pivotal arms 27. Each pallet has a set of identifying dogs (31) (Fig. 3, not shown) that are read by a reading head (34) having spring biased rods (35) which control a pneumatic binary signalling arrangement (37), (60). Reading heads are provided at various sites 40-50 in the apparatus. The buffer conveyer 10 is divided into areas B1, B2, B3 each having a stop at a ready station Y1, Y2, Y3. The main conveyer 11 is divided into storage areas D1, D2, D3 each having a stop position S1 S2, S3. Instruction programmes are ...
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