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US 5,457,892 AGranted
Gauge for forming die keeper pin assemblies
AssigneeChrysler Corporation
InventorPeter Birschl
Life of this patent
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AssigneeChrysler Corporation
InventorPeter Birschl
Estimating the term…
A gauge for determining pertinent dimensions to which portions of die keeper pin assemblies are to be machined prior to insertion of the latter into a stamping die assembly. The gauge includes a body having a partial circular extension formed on one end thereof, a rod having one threaded end freely mounted through an axial passageway and threadedly connected to threads formed at the end thereof, a hole formed in the non-circular portion of the extension, a spring-loaded pin slip-fitted in the hole adapted to being secured in any axial position by threading the rod into engagement with the pin. The gauge is inserted through a passage formed through a wall of a stamping die body so as to position the pin in the path of a movable die pad, while the rod is out of contact with the pin. After the pad is caused to travel to its lowest position, urging the pin inwardly, the rod is threadedly extended into engagement with the pin to hold its depressed position. Thereafter, a keeper pin assembly is machined to conform to the height dimension established by the secured, gauge pin and inserted through the die passage to serve as a safety stop for the die pad.
For use with a stamping die having a body with side openings formed therein, and a pad vertically movable therein through a predetermined stroke, the improvement comprising a gauge inserted through one side opening and including a spring-loaded end portion adapted to be contacted by the pad, and locking means for locking-in the spring-loaded end portion to establish a machining dimension for machining a safety stop surface on a keeper pin assembly conforming to the lower end of the pad's stroke.
A gauge comprising a body having a partial circular extension formed on one end thereof, an axial passageway formed through the body and the extension, threads formed in the extension end portion of the passageway, a rod having one threaded end freely mounted through said passageway and threadedly connected to said threads, a hole formed in the non-circular portion of said extension transverse to and crossing said threaded extension end portion, a spring mounted in said hole beyond said threaded extension end portion, a pin slip-fitted in said hole and on said spring adapted to being secured in any axial position by threading said rod into engagement with said pin.
For use with a stamping die assembly including a die body, a die pad slidably mounted in the die body for a predetermined vertical travel distance, a plurality of passages formed through walls of the die body, a flat nose keeper pin assembly extended through each passage, the keeper pin assembly having a flat surface positioned at the lower end of said predetermined vertical travel distance to serve as a safety stop for said pad, a method of forming said flat surface comprising the steps of:
Dependencies are inferred from the claim text.