GUIDED KEEPER AND METHOD FOR METAL FORMING DIES
First 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 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 cylindrically-shaped central aperture extending axially through a central portion of the base and having a bearing surface;
forming a guide pin with a first end portion having an enlarged head shaped to abut the base to positively limit travel between the die shoe and the die pad, and a cylindrically-shaped body portion having a uniform diameter extending along the entirety of the central axis thereof selected for close reception in the central aperture of the base and a second end portion disposed opposite the first end portion with a generally flat, terminal shoulder;
forming a fastener aperture perpendicularly through the shoulder of the guide pin and into the second end portion thereof at a location spaced radially offset from the central axis of the body portion of the guide pin, and oriented parallel therewith;
forming a blind hole in the die pad at a preselected location with a diameter shaped for close reception of the shoulder of the guide pin therein;
forming at least one fastener aperture in the die pad at a preselected location which opens into the blind hole;
forming at least one fastener aperture in the die shoe at a preselected location;
inserting the body portion of the guide pin into the central aperture of the base for precisely guiding reciprocal motion between the die pad and the die shoe;
inserting a first 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 shoulder on the second end portion of the guide pin into the blind hole in the die pad to precisely locate the second end portion of the guide pin in the die pad; and
inserting a second fastener through the fastener aperture in the die pad and engaging the same in the fastener aperture in the second end portion of the guide pin to securely, yet detachably connect the second end portion of the guide pin with the die pad and positively prevent the guide pin from rotating axially relative to the die pad.
1 Assignment
0 Petitions
Accused Products
Abstract
A guided keeper assembly and method for metal forming dies includes a base having a mounting face, at least one marginal fastener aperture to detachably mount the base to an associated die shoe, and a central guide aperture. A guide pin with a cylindrically shaped body portion is closely received in the central aperture of the base. A first end of the guide pin has an enlarged head to positively limit travel between the die shoe and die pad, and an opposite second end with a generally flat terminal shoulder configured for close reception in a blind hole in the die pad. The shoulder has a fastener aperture extending perpendicularly therethrough at a location spaced radially offset from the central axis of the guide pin. A fastener extends through the fastener aperture in the die pad and engages in the fastener aperture in the second end of the guide pin to securely, yet detachably, connect the second end portion of the guide pin with the die pad and positively prevent the guide pin from rotating axially relative to the die pad.
9 Citations
34 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 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 cylindrically-shaped central aperture extending axially through a central portion of the base and having a bearing surface; forming a guide pin with a first end portion having an enlarged head shaped to abut the base to positively limit travel between the die shoe and the die pad, and a cylindrically-shaped body portion having a uniform diameter extending along the entirety of the central axis thereof selected for close reception in the central aperture of the base and a second end portion disposed opposite the first end portion with a generally flat, terminal shoulder; forming a fastener aperture perpendicularly through the shoulder of the guide pin and into the second end portion thereof at a location spaced radially offset from the central axis of the body portion of the guide pin, and oriented parallel therewith; forming a blind hole in the die pad at a preselected location with a diameter shaped for close reception of the shoulder of the guide pin therein; forming at least one fastener aperture in the die pad at a preselected location which opens into the blind hole; forming at least one fastener aperture in the die shoe at a preselected location; inserting the body portion of the guide pin into the central aperture of the base for precisely guiding reciprocal motion between the die pad and the die shoe; inserting a first 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 shoulder on the second end portion of the guide pin into the blind hole in the die pad to precisely locate the second end portion of the guide pin in the die pad; and inserting a second fastener through the fastener aperture in the die pad and engaging the same in the fastener aperture in the second end portion of the guide pin to securely, yet detachably connect the second end portion of the guide pin with the die pad and positively prevent the guide pin from rotating axially relative to the die pad. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. 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, comprising:
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a base with a mounting face shaped to abut 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 cylindrically-shaped central aperture extending axially through a central portion of said base and having a bearing surface; a guide pin having a first end portion with an enlarged head shaped to abut said base to positively limit travel between said die shoe and said die pad, and a cylindrically-shaped body portion having a central axis, a uniform diameter extending along the entirety of said central axis thereof selected for close reception in said central aperture of said base and a second end portion disposed opposite said first end portion with a generally flat, terminal shoulder;
said shoulder having a fastener aperture extending perpendicularly through said shoulder of said guide pin and into said second end portion thereof at a location spaced radially offset from said central axis of said body portion of said guide pin, and oriented parallel therewith;a blind hole disposed in said die pad at a preselected location and closely receiving therein said shoulder of said guide pin for precisely guiding reciprocal motion between said die pad and said die shoe; at least one fastener aperture disposed in said die pad at a preselected location which opens into said blind hole; at least one fastener aperture disposed in said die shoe at a preselected location; a first fastener extending through said fastener aperture in said base and engaging the same in said fastener aperture of said die shoe to securely, yet detachably, mount said base to said die shoe; and a second fastener extending through said fastener aperture in said die pad and engaging the same in said fastener aperture in said second end portion of said guide pin to securely, yet detachably connect said second end portion of said guide pin with said die pad and positively prevent said guide pin from rotating axially relative to said die pad. - View Dependent Claims (27, 28, 29, 30)
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31. A guided keeper for 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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a base having a 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 cylindrically-shaped central aperture extending axially through a central portion of said base and having a bearing surface; a guide pin having a first end portion thereof with an enlarged head shaped to abut said base to positively limit travel between the die shoe and the die pad, and a cylindrically-shaped body portion having a central axis, a uniform diameter extending along the entirety of said central axis thereof for close reception in said central aperture of said base and a second end portion disposed opposite said first end portion with a generally flat, terminal shoulder configured for close reception in a blind hole in the die pad;
said shoulder having a fastener aperture extending perpendicularly therethrough and into said second end portion thereof at a location spaced radially offset from said central axis of said body portion of said guide pin, and oriented parallel therewith;a first fastener extending through said fastener aperture in said base and engaging the same in an associated fastener aperture in the die shoe to securely, yet detachably, mount said base to the die shoe; and a second fastener extending through an associated fastener aperture in the die pad and engaging the same in said fastener aperture in said second end portion of said guide pin to securely, yet detachably, connect said second end portion of said guide pin with the die pad and positively prevent said guide pin from rotating axially relative to the die pad. - View Dependent Claims (32, 33, 34)
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Specification