Patent ID: 6902093
Filing Date: 2005-06-07
Classification: B25C

Abstract:
1. A centering punch, comprising a first body, a second body, a punching head, an elastic body, an elastic member, a push member, and a spring, wherein: the first body has an inner wall having a first end formed with a receiving recess, a mediate portion formed with a tapered face and a second end formed with a receiving chamber; the second body is mounted on the first body and has an inside formed with a receiving space; the punching head is movably mounted in the receiving chamber of the first body and has a first end formed with a tapered portion aligning with the tapered face of the first body and a second end formed with a control hole; the elastic body is urged between the receiving chamber of the first body and a periphery of the punching head so that the punching head is located eccentrically in the receiving chamber of the first body by an elastic force of the elastic body; the elastic member is mounted in the receiving recess of the first body and urged between the first body and the tapered portion of the punching head; the push member is movably mounted in the receiving space of the second body and has a first end provided with a push portion rested on the second end of the punching head and located adjacent to the control hole of the punching head and a second end protruded outward from the second body; and the spring is mounted on the push portion of the push member and urged between the push member and the punching head.