Abstract: A numerical control unit is provided that can change an override value according to various workpiece materials and can extend the tool life. A numerical control unit includes a variation storage unit that stores a variation in override value of a feed speed or a spindle speed for each workpiece material, an override value setting unit that sets the override value based on the variation in override value according to the material of a workpiece being machined; and a control unit that changes the feed speed or the spindle speed based on the override value.

Abstract: There is provided a flexible manufacturing system that can reliably place a workpiece that isn't defective piece in a state where the workpiece will be machined again. After a pallet is conveyed to a standby position and before machining of the workpiece attached to the pallet is started, controllers determines whether machining of the workpiece with a corresponding machining device is possible. When it is determined that machining is possible, the controller starts machining with the machining device. When it is determined that machining is impossible, the controller make a conveyor convey the pallet from the standby position to a pallet storage room, and stores the machining status information on the conveyed pallet as the machining-waiting state.

Abstract: An NC program creating device is provided that can automatically insert in an NC program a code that can be executed simultaneously with feeding in a non-cutting state. If it is determined by a determination unit that there is a standard code M03, M06, M10 before or after a non-cutting feed code G00 or G30 in an NC program, a new code placement unit places, instead of the standard code M03, M06, M10, a simultaneous execution code M103, M805, M110 corresponding to the standard code M03, M06, M10 before the non-cutting feed code G00 or G30, and places after the non-cutting feed code G00 or G30 a code that performs at least a prescribed operation of the standard code M03, M06, M10 other than an operation of the simultaneous execution code M103, M805, M110.

Abstract: A flexible manufacturing system that makes it possible to give a higher priority to machining of a workpiece that is a super-urgent item is provided. When a pallet to which a workpiece, which is a super-urgent item, is attached is loaded on a loading station, a second controller gives a command to a conveyor to convey a pallet to which a workpiece, which is a normal item, is attached and which is located at a standby position of a pallet changer to a pallet storage room. Then, the second controller controls the conveyor to convey the pallet to which the workpiece, which is the super-urgent item, is attached and which is loaded on the loading station to the standby position.

Abstract: A conveyance system is provided which conveys an object to a machining apparatus using a conveying apparatus and which further enables power saving. A controller calculates a first conveyance completion estimated time when conveyance from a first mounting position to machining apparatuses at a reference speed is complete. If a request to load a next object into the machining apparatus is issued by the machining apparatus, the controller decides a first moving speed of a conveying apparatus to be a reference speed when the machining apparatus is not performing a machining operation at the first conveyance completion estimated time and to be a low speed lower than the reference speed when the machining apparatus is performing the machining operation at the first conveyance completion estimated time.

Abstract: A conveyance system is provided which conveys an object to a machining apparatus using a conveying apparatus and which further enables power saving. A controller calculates a first conveyance completion estimated time when conveyance from a first mounting position to machining apparatuses at a reference speed is complete. If a request to load a next object into the machining apparatus is issued by the machining apparatus, the controller decides a first moving speed of a conveying apparatus to be a reference speed when the machining apparatus is not performing a machining operation at the first conveyance completion estimated time and to be a low speed lower than the reference speed when the machining apparatus is performing the machining operation at the first conveyance completion estimated time.

Abstract: An NC program creating device is provided that can automatically insert in an NC program a code that can be executed simultaneously with feeding in a non-cutting state. If it is determined by a determination unit that there is a standard code M03, M06, M10 before or after a non-cutting feed code G00 or G30 in an NC program, a new code placement unit places, instead of the standard code M03, M06, M10, a simultaneous execution code M103, M805, M110 corresponding to the standard code M03, M06, M10 before the non-cutting feed code G00 or G30, and places after the non-cutting feed code G00 or G30 a code that performs at least a prescribed operation of the standard code M03, M06, M10 other than an operation of the simultaneous execution code M103, M805, M110.

Abstract: A numerical control unit is provided that can change an override value according to various workpiece materials and can extend the tool life. A numerical control unit includes a variation storage unit that stores a variation in override value of a feed speed or a spindle speed for each workpiece material, an override value setting unit that sets the override value based on the variation in override value according to the material of a workpiece being machined; and a control unit that changes the feed speed or the spindle speed based on the override value.

Abstract: There is provided a flexible manufacturing system that can reliably place a workpiece that isn't defective piece in a state where the workpiece will be machined again. After a pallet is conveyed to a standby position and before machining of the workpiece attached to the pallet is started, controllers determines whether machining of the workpiece with a corresponding machining device is possible. When it is determined that machining is possible, the controller starts machining with the machining device. When it is determined that machining is impossible, the controller make a conveyor convey the pallet from the standby position to a pallet storage room, and stores the machining status information on the conveyed pallet as the machining-waiting state.

Abstract: A flexible manufacturing system that makes it possible to give a higher priority to machining of a workpiece that is a super-urgent item is provided. When a pallet to which a workpiece, which is a super-urgent item, is attached is loaded on a loading station, a second controller gives a command to a conveyor to convey a pallet to which a workpiece, which is a normal item, is attached and which is located at a standby position of a pallet changer to a pallet storage room. Then, the second controller controls the conveyor to convey the pallet to which the workpiece, which is the super-urgent item, is attached and which is loaded on the loading station to the standby position.

Abstract: Information regarding various types of machining may be stored in an NC program. Therefore, by controlling preload application means on the basis of the NC program, it is possible to control an amount of preload that is applied to a rolling bearing to a preload amount that can give a spindle characteristic that meets every type of machining. Thus, highly accurate machining is possible. Then, when a preload command value falls out of range of a preload as a controllable region, the preload command value is corrected so as to fall within the range of the preload. That is, an actually controlled preload is regulated to fall within a preset range of a preload. Therefore, it is possible to ensure the stiffness of the rolling bearing or prevent heating and excessive increase in contact pressure of the rolling bearing.

Abstract: An apparatus for setting control parameters of a machining apparatus. The setting apparatus includes a storage unit for storing a set of control parameters for each of a plurality of machining modes; an input device for selecting one of the plurality of machining modes; and a control unit for selecting a set of control parameters corresponding the selected machining mode and setting the set of control parameters as control parameters to be used for controlling the machining apparatus.

Abstract: An apparatus for setting control parameters of a machining apparatus. The setting apparatus includes a storage unit for storing a set of control parameters for each of a plurality of machining modes; an input device for selecting one of the plurality of machining modes; and a control unit for selecting a set of control parameters corresponding the selected machining mode and setting the set of control parameters as control parameters to be used for controlling the machining apparatus.