A machine learning device, which learns shocks to a teaching device, includes a state observation unit which observes data based on an inclination of the teaching device or a present position of the teaching device; a label obtaining unit which obtains a label based on a shock received by the teaching device; and a learning unit which generates a learning model based on an output of the state observation unit and an output of the label obtaining unit.

A terminal device for assisting operation of a plurality of eyeglass manufacturing apparatuses which are used for performing different processes in manufacturing eyeglasses includes: a communicating device configured to communicate with the plurality of eyeglass manufacturing apparatuses; a processor; and memory storing computer readable instructions, when executed by the processor, causing the terminal device to execute: a setting instruction for setting, according to a process, a specific eyeglass manufacturing apparatus from the plurality of eyeglass manufacturing apparatuses as an eyeglass manufacturing apparatus of which the operation is assisted; and a controlling instruction for controlling the communicating device to send an operating signal input in the terminal device to the specific eyeglass manufacturing apparatus set by the setting instruction or controlling the communicating device to receive an input signal input in the specific eyeglass manufacturing apparatus set by the setting instruction.