Abstract: An NC program generating and editing apparatus 2 includes an interactive input module 9, a first memory 10, an NC program generator 11, a second memory 12, a program editor 13, a change checker 14 and a data updater 15. The change checker 14 determines whether a changed portion of an edited NC program consists of only a change related to a preset NC code, and when the changed portion consists of only a change related to the NC code, corresponding basic data is updated by the data updater 15.

Abstract: A display apparatus has a display 40, a model data storage unit 37 storing therein three-dimensional model data of a movable structure and a structure having a possibility of interfere with the movable structure, a model generation unit 33 generating a three-dimensional model in which three-dimensional models of the structures are arranged in a three-dimensional space, an interference-caution-portion specifying unit 34 specifying a portion of the movable structure having a possibility of contact with an interfering structure as an interference caution portion when an interfering structure exists and specifying a leading portion of the movable structure in a moving direction as an interference caution portion when an interfering structure does not exist, and an image display unit 35 generating an image with the interference caution portion highlighted based on the three-dimensional model generated by the model generation unit 33 and displaying the image on the display 40.

Abstract: An NC program generating and editing apparatus 2 includes an interactive input module 9, a first memory 10, an NC program generator 11, a second memory 12, a program editor 13, a change checker 14 and a data updater 15. The change checker 14 determines whether a changed portion of an edited NC program consists of only a change related to a preset NC code, and when the changed portion consists of only a change related to the NC code, corresponding basic data is updated by the data updater 15.

Abstract: A display apparatus has a display 40, a model data storage unit 37 storing therein three-dimensional model data of a movable structure and a structure having a possibility of interfere with the movable structure, a model generation unit 33 generating a three-dimensional model in which three-dimensional models of the structures are arranged in a three-dimensional space, an interference-caution-portion specifying unit 34 specifying a portion of the movable structure having a possibility of contact with an interfering structure as an interference caution portion when an interfering structure exists and specifying a leading portion of the movable structure in a moving direction as an interference caution portion when an interfering structure does not exist, and an image display unit 35 generating an image with the interference caution portion highlighted based on the three-dimensional model generated by the model generation unit 33 and displaying the image on the display 40.