Machining assistance apparatus

A machining assistance apparatus for calculating various data related to machining processing of a machine tool for cutting a workpiece into a polygon shape by rotating the workpiece and a tool at a certain ratio, the machining assistance apparatus comprising:

• an input receiver including a number-of-polygon-faces input receiver configured to receive information related to the number of polygon faces of the workpiece formed by the cutting and a number-of-blades input receiver configured to receive input of information related to the number of blades attached to the tool, the input receiver being configured to receive input of information related to the machining processing;
• a speed range setter configured to set axis rotation speeds of the tool and the workpiece in advance;
• a calculator including a rotation speed ratio calculator configured to calculate a rotation speed ratio of the tool to the number of polygon faces based on the number of polygon faces and the number of blades, and a rotation speed calculator configured to calculate axis rotation speeds of the tool and the workpiece or candidates thereof based on the rotation speed ratio within a range of the set axis rotation speeds of the tool and the workpiece;
• and
• a display output unit configured to output a calculation result by the calculator to a display unit connected to the machining assistance apparatus, and to cause the display unit to display the calculation result.