Cycle time calculation apparatus

A cycle time calculation apparatus comprising:

• one or more processors;
• and
• a memory, wherein
• the one or more processors are configured to function as:
• a plurality of resource process units, each provided in correspondence to one of a plurality of work resources forming a machining cell, wherein each of the plurality of resource process units virtually judges progress of a process in a corresponding work resource based on an elapsed time from reception of a command to start a process, and outputs a result of the judgment as a resource state;
• a process control unit which dynamically determines timings to start operations of the plurality of work resources based on a sequence program designated by an operator and the resource states of the plurality of resource process units, and sends a command to start a process to the resource process unit in accordance with a result of the determination;
• a cumulative management unit which measures a time in which the resource state of at least one of the resource process units is in-operation;
• and
• a cycle time calculation unit which calculates a cycle time, which is a time required for actually executing machining in accordance with the sequence program, based on a result of the measurement by the cumulative management unit,
• the resource process unit calculates, as a process time, a value obtained by adding a product of all or a part of the elapsed time from the reception of the command to start the process and an acceleration factor which is predefined, and a remaining time of the elapsed time from the reception of the command to start the process, and further calculates, as an over-time, a value obtained by subtracting a resource operative setting time, which is predefined, from the process time, and
• the cycle time calculation unit calculates, as the cycle time, a value obtained by subtracting a cumulative value of the over-time from a cumulative value of the process time.

A cycle time calculation apparatus comprising:

• one or more processors;
• and
• a memory, wherein
• the one or more processors are configured to function as:
• a plurality of resource process units, each provided in correspondence to one of a plurality of work resources forming a machining cell, wherein each of the plurality of resource process units virtually judges progress of a process in a corresponding work resource based on an elapsed time from reception of a command to start a process, and outputs a result of the judgment as a resource state;
• a process control unit which dynamically determines timings to start operations of the plurality of work resources based on a sequence program designated by an operator and the resource states of the plurality of resource process units, and sends a command to start a process to the resource process unit in accordance with a result of the determination;
• a cumulative management unit which measures a time in which the resource state of at least one of the resource process units is in-operation;
• and
• a cycle time calculation unit which calculates a cycle time, which is a time required for actually executing machining in accordance with the sequence program, based on a result of the measurement by the cumulative management unit,
• the resource process unit calculates, as a process time, a value obtained by adding a product of all or a part of the elapsed time from the reception of the command to start the process and an acceleration factor which is predefined, and a remaining time of the elapsed time from the reception of the command to start the process, and
• the resource process unit completes the process to multiply all or a part of the elapsed time by the acceleration factor at a timing when a difference between a resource operative setting time which is predefined and the process time becomes less than a product of the acceleration factor and a control period, and then adds an actual elapsed time to the process time until the process time has reached the resource operative setting time.