1 Introduction
With the progress of an aging society, elderly people who live alone increase and it is expected that a home robot supports them in their daily life. In the future, robots will become widely used and care for elderly people and/or execute housework. Cooking is one of the typical housework that is indispensable in everyday life. It is thought that if the robot can break an egg well which is used frequently in various cooking, the applicable tasks by the robot will become wide.