Machining result evaluation device, machining result evaluation method, machining condition determination device, and machining condition determination method

A machining result evaluation method for evaluating a machining result of machining by a machine tool driven by a servo control device,

• the machining result evaluation method comprising:
• calculating a position command to a draft shaft of the machine tool by simulating an operation of a numerical control device that controls the servo control device, and outputting the calculated position command to a drive shaft of the;
• calculating a torque command to the drive shaft by simulating an operation of the servo control device on a basis of the position command, and outputting the calculated torque command;
• simulating an operation of the drive shaft on a basis of the torque command and outputting operation information indicating the operation of the drive shaft;
• and
• evaluating the machining result on a basis of information corresponding to an operation of the drive shaft, wherein
• the method further comprises:
• outputting position information indicating a position of the drive shaft obtained by simulating the operation of the drive shaft:
• simulating feedback control of the drive shaft by using the position information;
• and
• evaluating the machining result obtained when the feedback control of the drive shaft is simulated.

A machining condition determination device to determine a machining condition when a machine tool driven by a servo control device performs machining,

• the machining condition determination device comprising:
• numerical control simulation circuitry to calculate a position command to a drive shaft of the machine tool by simulating an operation of a numerical control device that controls the servo control device, and output the calculated position command;
• servo control simulation circuitry to calculate a torque command to the drive shaft by simulating an operation of the servo control device on a basis of the position command, and output the calculated torque command;
• drive shaft simulation circuitry to simulate an operation of the drive shaft on a basis of the torque command, and output operation information indicating an operation of the drive shaft;
• machining result evaluation circuitry to evaluate a machining result of machining by the machine tool on a basis of information corresponding to an operation of the drive shaft;
• machine learning circuitry to generate an inference model for inferring the machining condition from the machining result;
• and
• machining condition determination circuitry to determine a machining condition by using the inference model, the machining condition corresponding to a machining result input by an operator, wherein
• the drive shaft simulation circuitry outputs, to the servo control simulation circuitry, position information indicating a position of the drive shaft obtained by simulating the operation of the drive shaft,
• the servo control simulation circuitry simulates feedback control of the drive shaft simulation circuitry by using the position information, and
• the machining result evaluation circuitry evaluates the machining result obtained when the feedback control of the drive shaft simulation circuitry is simulated.

A machining condition determination method for determining a machining condition when a machine tool driven by a servo control device performs machining,

• the machining condition determination method comprising:
• calculating a positon command to a drive shaft of the machine tool by simulating an operation of a numerical control device that controls the servo control device, and outputting the calculated position command;
• calculating a torque command to the drive shaft by simulating an operation of the servo control device on a basis of the position command, and outputting the calculated torque command;
• simulating an operation of the drive shaft on a basis of the torque command, and outputting operation information indicating an operation of the drive shaft;
• evaluating a machining result of machining by the machine tool on a basis of information corresponding to an operation of the drive shaft;
• generating an inference model for inferring the machining condition from the machining result;
• and
• determining a machining condition by using the inference model, the machining condition corresponding to a machining result input by an operator, wherein
• the method further comprises:
• outputting position information indicating a position of the drive shaft obtained by simulating the operation of the drive shaft;
• simulating feedback control of the drive shaft by using the position information;
• and
• evaluating the machining result obtained when the feedback control of the drive shaft is simulated.