Design assistance apparatus and design assistance method

A design assistance apparatus that assists quantification of a threshold value of a main feature amount included in a design rule, the design assistance apparatus comprising:

• a processor;
• a memory;
• and
• a design rule quantification program stored in the memory and configured to be executed by the processor,
• wherein
• the design rule quantification program includes a three-dimensional CAD data group extraction unit, a main feature amount measurement unit, a related feature amount extraction unit, a statistical value calculation unit, and a statistical value visualization unit,
• the three-dimensional CAD data group extraction unit extracts, according to the design rule, a plurality of three-dimensional CAD data commercialized in the past and released,
• the main feature amount measurement unit measures the main feature amount for each of the plurality of three-dimensional CAD data that are extracted,
• the related feature amount extraction unit acquires or measures a related feature amount defined according to the main feature amount for each of the plurality of three-dimensional CAD data that are extracted,
• the statistical value calculation unit calculates a statistical value based on the main feature amount and the related feature amount, and
• the statistical value visualization unit visualizes the statistical value in order to identify an allowable range of the main feature amount or the related feature amount highly relevant to the main feature amount.