A teaching data generating device for a work robot includes: a storage unit (22) that stores three-dimensional models of a plurality of work robots (12), a display unit (26) that displays a virtual space that represents an actual workspace (WS) where a work robot (12) is set up and displays at least one three-dimensional model selected from among the three-dimensional models of the plurality of work robots stored in the storage unit (22) such that the three-dimensional model is configured in the virtual space, an operation control unit that operates the three-dimensional model displayed on the display unit (26) in accordance with an instruction to operate the three-dimensional model, and a teaching data generating unit that generates teaching data for the work robot (12) using data of motions of the three-dimensional model operated by the operation control unit.

An offline teaching device according to the present disclosure includes a display unit, a storage unit, and a control unit. The display unit displays a teaching program and a model diagram. The storage unit stores commands constituting the teaching program, and model data of the model diagram. The control unit controls the display unit and the storage unit. The teaching program includes a position detection program including a plurality of position detection commands, and a welding program including a plurality of welding commands. The control unit displays, in the model diagram, an operation trajectory of a robot when the teaching program is executed. The control unit displays a part of the plurality of position detection commands and a part of the plurality of welding commands in the model diagram.