Guided keeper assembly and method for metal forming dies
First Claim
1. In a metal forming die having a die shoe, a die pad mounted a spaced apart distance from said die shoe for reciprocation between converged and diverged positions, and a biasing member disposed between said die shoe and said die pad for biasing the same to said diverged position, the improvement of a guided keeper assembly, comprising:
- a base having;
a generally flat mounting face abutting an adjacent face of said die shoe;
at least one fastener aperture extending axially through a marginal portion of said base for detachably mounting said base to said die shoe;
a central aperture extending axially through a central portion of said base; and
a bushing mounted in said central aperture of said base;
a guide pin having;
a cylindrically-shaped central portion closely received in said bushing in said base for precisely guiding reciprocal motion between said die pad and said die shoe;
a first end having an enlarged head shaped to abut said base to positively limit travel between said die shoe and said die pad; and
a second end, positioned opposite said first end, and having a shoulder with a rigid center post protruding outwardly therefrom to precisely locate said second end of said guide pin in said die pad;
a first fastener extending through said fastener aperture in said base and securely, yet detachably, connecting said base with said die shoe; and
a second fastener securely, yet detachably, connecting said second end of said guide pin with said 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.
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Citations
40 Claims
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1. In a metal forming die having a die shoe, a die pad mounted a spaced apart distance from said die shoe for reciprocation between converged and diverged positions, and a biasing member disposed between said die shoe and said die pad for biasing the same to said diverged position, the improvement of a guided keeper assembly, comprising:
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a base having; a generally flat mounting face abutting an adjacent face of said die shoe; at least one fastener aperture extending axially through a marginal portion of said base for detachably mounting said base to said die shoe; a central aperture extending axially through a central portion of said base; and a bushing mounted in said central aperture of said base; a guide pin having; a cylindrically-shaped central portion closely received in said bushing in said base for precisely guiding reciprocal motion between said die pad and said die shoe; a first end having an enlarged head shaped to abut said base to positively limit travel between said die shoe and said die pad; and a second end, positioned opposite said first end, and having a shoulder with a rigid center post protruding outwardly therefrom to precisely locate said second end of said guide pin in said die pad; a first fastener extending through said fastener aperture in said base and securely, yet detachably, connecting said base with said die shoe; and a second fastener securely, yet detachably, connecting said second end of said guide pin with said die pad. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A guided keeper assembly for a metal forming die 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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a base having; 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 said base for detachably mounting said base to the die shoe; a central aperture extending axially through a central portion of said base; and a bushing mounted in said central aperture of said base; a guide pin having; a cylindrically-shaped central portion closely received in said bushing in said base for precisely guiding reciprocal motion between the die pad and the die shoe; a first end having an enlarged head shaped to abut said base to positively limit travel between the die shoe and the die pad; and a second end, positioned opposite said first end, and having a shoulder with a rigid center post protruding outwardly therefrom to precisely locate said second end of said guide pin in the die pad; a first fastener extending through said fastener aperture in said base and securely, yet detachably, connecting said base with the die shoe; and a second fastener securely, yet detachably, connecting said second end of said guide pin with the die pad. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. In a metal forming die having a die shoe, a die pad mounted a spaced apart distance from said die shoe for reciprocation between converged and diverged positions, and a biasing member disposed between said die shoe and said die pad for biasing the same to said diverged position, the improvement of a guided keeper assembly, comprising:
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a base having; a generally flat mounting face abutting an adjacent face of said die shoe; at least one fastener aperture extending axially through a marginal portion of said base for detachably mounting said base to said die shoe; and a central aperture extending axially through a central portion of said base; a guide pin having; a cylindrically-shaped central portion closely received in said central aperture of said base for precisely guiding reciprocal motion between said die pad and said die shoe; a first end having an enlarged head shaped to abut said base to positively limit travel between said die shoe and said die pad; and a second end, positioned opposite said first end, and having a shoulder with a center alignment aperture disposed concentrically in said shoulder; an alignment pin having one end thereof mounted in said die pad, and an opposite end thereof closely received in said center alignment aperture on said guide pin shoulder to precisely locate said second end of said guide pin in said die pad; a first fastener extending through said fastener aperture in said base and securely, yet detachably, connecting said base with said die shoe; and a second fastener securely, yet detachably, connecting said second end of said guide pin with said die pad. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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35. A guided keeper assembly for a metal forming die 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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a base having; 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 said base for detachably mounting said base to the die shoe; and a central aperture extending axially through a central portion of said base; a guide pin having; a cylindrically-shaped central portion closely received in said central aperture of said base for precisely guiding reciprocal motion between the die pad and the die shoe; a first end having an enlarged head shaped to abut said base to positively limit travel between the die shoe and the die pad; and a second end, positioned opposite said first end, and having a shoulder with a center alignment aperture disposed concentrically in said shoulder; an alignment pin having one end thereof shaped for mounting in the die pad, and an opposite end thereof closely received in said center alignment aperture on said guide pin shoulder to precisely locate said second end of said guide pin in the die pad; a first fastener extending through said fastener aperture in said base and securely, yet detachably, connecting said base with the die shoe; and a second fastener securely, yet detachably, connecting said second end of said guide pin with the die pad. - View Dependent Claims (36, 37, 38, 39, 40)
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Specification