Abstract: A numerical control device includes: a control unit controlling movement of shafts of a machine tool by a position command according to a machining program and acquiring position information on the shafts; a monitoring point determination unit determining a monitoring point in the machining program and a monitoring shaft according to the type of an instruction or an instruction related to travel described in the machining program; and a monitoring unit monitoring whether error or deviation based on the position information at the monitoring point of the monitoring shaft exceeds a predetermined threshold, wherein the control unit controls movement of the shafts based on the monitoring result of the monitoring unit, and the numerical control device further comprises an analysis unit presenting whether the cause of the error or deviation is a mechanical factor or a control factor based on the monitoring result and outputting the analysis result.

Abstract: To avoid overheating of a spindle motor as easy as possible, a numerical control apparatus measures a cycle time in machining a work (step S5), measures a current amount per unit cycle flowing to the spindle motor (steps S3 and step S4), calculates, on the basis of the measured current amount per unit cycle, a duty cycle time in which suppression of the occurrence of overheating of the spindle motor is guaranteed (step S6), determines on the basis of a comparison of the duty cycle time and the cycle time whether the spindle motor overheats (step S7), and, when the spindle motor overheats (Yes at step S7), delays a start of the next cycle by a wait time setting value Tw obtained by subtracting the cycle time from the duty cycle time (step S8, No at step S10, and step S11).

Abstract: A numerical control device includes: a control unit controlling movement of shafts of a machine tool by a position command according to a machining program and acquiring position information on the shafts; a monitoring point determination unit determining a monitoring point in the machining program and a monitoring shaft according to the type of an instruction or an instruction related to travel described in the machining program; and a monitoring unit monitoring whether error or deviation based on the position information at the monitoring point of the monitoring shaft exceeds a predetermined threshold, wherein the control unit controls movement of the shafts based on the monitoring result of the monitoring unit, and the numerical control device further comprises an analysis unit presenting whether the cause of the error or deviation is a mechanical factor or a control factor based on the monitoring result and outputting the analysis result.

Abstract: To avoid overheating of a spindle motor as easy as possible, a numerical control apparatus measures a cycle time in machining a work (step S5), measures a current amount per unit cycle flowing to the spindle motor (steps S3 and step S4), calculates, on the basis of the measured current amount per unit cycle, a duty cycle time in which suppression of the occurrence of overheating of the spindle motor is guaranteed (step S6), determines on the basis of a comparison of the duty cycle time and the cycle time whether the spindle motor overheats (step S7), and, when the spindle motor overheats (Yes at step S7), delays a start of the next cycle by a wait time setting value Tw obtained by subtracting the cycle time from the duty cycle time (step S8, No at step S10, and step S11).

Abstract: A numerical control system using converted data is provided in which changes can be made quickly to the feed rate by speed override and the like, the operation of the machine according to the content of variable data, and workpiece offset data during machining operation. The numerical control system includes a machining-program/internal-processing conversion module for allocating during conversion a command in a machining program to an application program for the numerical control apparatus, a variable/offset conversion module for storing during conversion, with respect to a command such as a variable command and a tool offset command in the machining program, only referencing information for the command, and a conversion data executing module for directly executing, during machining program execution, the internal processing sequentially based on data allocated by the conversion module.

Abstract: A numerical control system using converted data can be obtained, in which, when an operator desires to change the feed rate by speed override and the like, when the operator-desires to change the operation of the machine according to the content of variable data, or when the operator desires to change workpiece offset data during machining operation, such a change can be quickly made.