Patent ID: 7281417

Claim:
A method for manufacturing a golf club head, comprising the steps of: a first step of setting a permissible range of a first resonance frequency for a value of a coefficient of restitution based on a linear regression equation which determines a relationship between the first resonance frequency of a vibration of an impact surface of each of a plurality of golf club head samples found from a response signal obtained by imparting a vibration to the impact surface thereof and a coefficient of restitution of each of the plurality of golf club head samples determined by an incident velocity and a rebound velocity of a golf ball upon impact to the impact surface, a mass of the golf ball and a mass of a golf club head sample, a second step of forming a golf club head; a third step of measuring a first resonance frequency of a vibration of an impact surface of the formed golf club head from a response signal obtained by imparting a vibration to the impact surface; and a fourth step of selecting the golf club head as an acceptable product or a unacceptable product by comparing the permissible range of the first resonance frequency set in the first step with the first resonance frequency measured in the third step, whereby the golf club head with the coefficient of restitution thereof controlled by using the first resonance frequency of the golf club head is manufactured.