Guided keeper assembly and method for metal forming dies
DCFirst Claim
1. A method for making a metal forming die of the type having a die shoe, a die pad mounted a spaced apart distance from the die shoe for reciprocation between converged and diverged positions, and a biasing member disposed between the die shoe and the die pad for biasing the same to the diverged position, comprising:
- forming a base with a generally flat mounting face shaped to abut an adjacent face of the die shoe, at least one fastener aperture extending axially through a marginal portion of the base for detachably mounting the base to the die shoe, and a central aperture extending axially through a central portion of the base;
mounting a bushing in the central aperture of the base;
forming a guide pin with a cylindrically-shaped central portion shaped for close reception in the bushing in the base, a first end with an enlarged head shaped to abut the base to positively limit travel between the die shoe and the die pad, and a second end with a shoulder and a rigid center post protruding outwardly therefrom;
forming a hole in the pad at a preselected location;
forming at least one fastener aperture in the die shoe at a preselected location;
inserting the central portion of the guide pin into the bushing in the base for precisely guiding reciprocal motion between the die pad and the die shoe;
inserting a fastener through the fastener aperture in the base and engaging the same in the fastener aperture of the die shoe to securely, yet detachably, mount the base to the die shoe;
inserting the center post on the second end of the guide pin into the hole in the die pad to precisely locate the second end of the guide pin in the die pad; and
securely, yet detachably, connecting the second end of the guide pin with the die pad.
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Abstract
A guided keeper assembly and method for metal forming dies includes a base having a flat mounting face and at least one marginal fastener aperture to detachably mount the base to an associated die shoe, as well as a central guide aperture. The assembly also includes a guide pin having a central portion closely received in the central guide aperture of the base for precisely guiding reciprocal motion between the die pad and an associated die shoe. The guide pin has an enlarged head at a first end thereof which abuts the mounting face of the base to positively limit travel between the die shoe and the die pad, and a shoulder at the opposite or second end thereof with an alignment mechanism that precisely locates the second end of the guide pin on the die pad. A first fastener extends through the marginal fastener aperture in the base to securely, yet detachably, connect the same with the die shoe. A second fastener securely, yet detachably, connects the second end of the guide pin with the die pad.
46 Citations
15 Claims
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1. A method for making a metal forming die of the type having a die shoe, a die pad mounted a spaced apart distance from the die shoe for reciprocation between converged and diverged positions, and a biasing member disposed between the die shoe and the die pad for biasing the same to the diverged position, comprising:
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forming a base with a generally flat mounting face shaped to abut an adjacent face of the die shoe, at least one fastener aperture extending axially through a marginal portion of the base for detachably mounting the base to the die shoe, and a central aperture extending axially through a central portion of the base; mounting a bushing in the central aperture of the base; forming a guide pin with a cylindrically-shaped central portion shaped for close reception in the bushing in the base, a first end with an enlarged head shaped to abut the base to positively limit travel between the die shoe and the die pad, and a second end with a shoulder and a rigid center post protruding outwardly therefrom; forming a hole in the pad at a preselected location; forming at least one fastener aperture in the die shoe at a preselected location; inserting the central portion of the guide pin into the bushing in the base for precisely guiding reciprocal motion between the die pad and the die shoe; inserting a fastener through the fastener aperture in the base and engaging the same in the fastener aperture of the die shoe to securely, yet detachably, mount the base to the die shoe; inserting the center post on the second end of the guide pin into the hole in the die pad to precisely locate the second end of the guide pin in the die pad; and securely, yet detachably, connecting the second end of the guide pin with the die pad. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification