Machining state display apparatus

A machining state display apparatus, comprising:

• an achievement degree data storage storing machining condition data relating to each of a plurality of predetermined sets of machining conditions and achievement degree data relating to degrees of achievement of a plurality of evaluation items on machine-tool machining to be obtained in machining under each of the plurality of sets of machining conditions with the machining condition data and the achievement degree data associated with each other, the plurality of evaluation items including at least one selected from among machining time, surface roughness, tool life, cutting efficiency, residual stress, spindle motor load, and feed motor load, the achievement degree data indicating the degree of achievement of each of the evaluation items within a range determined by attainable maximum and minimum values of the evaluation item;
• a display device having a display;
• an achievement degree display picture creator creating an achievement degree display picture for displaying, on the display, a set of machining conditions and the degrees of achievement of the evaluation items corresponding to the set of machining conditions by referring to the machining condition data and achievement degree data stored in the achievement degree data storage;
• a display controller displaying the achievement degree display picture created by the achievement degree display picture creator on the display of the display device;
• an input device inputting a selection signal for selecting one from the plurality of evaluation items and a required degree of achievement for the selected evaluation item;
• and
• an input controller transmitting the selection signal and required degree of achievement input from the input device to the achievement degree display picture creator,
• the achievement degree display picture creator being configured to, upon receipt of the selection signal and the required degree of achievement from the input controller, recognize, based on the selected evaluation item and the required degree of achievement, a set of machining conditions corresponding to the required degree of achievement for the selected evaluation item as well as the degrees of achievement of other evaluation items to be obtained under the set of machining conditions by referring to the achievement degree data and machining condition data stored in the achievement degree data storage, and create, as the achievement degree display picture, a display picture displaying the degree of achievement of the received evaluation item and the recognized degrees of achievement of the other evaluation items on evaluation-item basis.