Machine learning device, acceleration and deceleration adjustment device, and computer-readable storage medium

An acceleration/deceleration adjustment device for adjusting parameters related to control of an amount of movement for each control cycle, including an N-order time differential element (N being a natural number) of each shaft included in a machine tool for performing machining of a workpiece, the acceleration/deceleration adjustment device comprising:

• a state observer configured to observe information related to at least one of machining accuracy or machined surface quality in the machining and a machining time consumed for the machining as data indicating an operating state of the machine tool;
• a determination condition acquirer configured to acquire a target value related to data observed by the state observer as determination data;
• a value function storage unit configured to store a value function for calculating a value of a machining state based on the parameters;
• a decision maker configured to estimate a combination of set values of the parameters more suitable for the machining based on the value function, and output the estimated combination of the set values of the parameters;
• and
• an action output unit configured to adjust the parameters of the machine tool based on a combination of set values of the parameters output by the decision maker.

A computer-readable storage medium storing a program causing a computer to operate as a machine learning device for estimating parameters related to control of an amount of movement for each control cycle, including an N-order time differential element (N being a natural number) of each shaft included in a machine tool for performing machining of a workpiece, the computer-readable storage medium storing a program causing the computer to operate as:

• a state observer configured to observe information related to at least one of machining accuracy or machined surface quality in the machining and a machining time consumed for the machining as data indicating an operating state of the machine tool;
• a determination condition acquirer configured to acquire a target value related to data observed by the state observer as determination data;
• a reward calculation unit configured to calculate a reward for machining based on the parameters based on data observed by the state observer and the determination data acquired by the determination condition acquirer;
• a value function update unit configured to update a value function for calculating a value of a machining state based on the parameters based on the reward;
• and
• a decision maker configured to estimate a combination of set values of the parameters more suitable for the machining based on the updated value function, and output the estimated combination of the set values of the parameters.

A computer-readable storage medium storing a program causing a computer to operate as an acceleration/deceleration adjustment device for adjusting parameters related to control of an amount of movement for each control cycle, including an N-order time differential element (N being a natural number) of each shaft included in a machine tool for performing machining of a workpiece, the computer-readable storage medium storing a program causing the computer to operate as:

• a state observer configured to observe information related to at least one of machining accuracy or machined surface quality in the machining and a machining time consumed for the machining as data indicating an operating state of the machine tool;
• a determination condition acquirer configured to acquire a target value related to data observed by the state observer as determination data;
• a value function storage unit configured to store a value function for calculating a value of a machining state based on the parameters;
• a decision maker configured to estimate a combination of set values of the parameters more suitable for the machining based on the value function, and output the estimated combination of the set values of the parameters;
• and
• an action output unit configured to adjust the parameters of the machine tool based on a combination of set values of the parameters output by the decision maker.