Cutting – With product handling means – Means to move – guide – or permit free fall or flight of product
Patent
1983-12-05
1985-05-14
Schran, Donald R.
Cutting
With product handling means
Means to move, guide, or permit free fall or flight of product
83136, 83698, B26F 114, B21D 4500
Patent
active
045164495
ABSTRACT:
An improved tool holder for stripping work pieces from dies includes a cylindrical mandrel having a slotted boss extending axially from the upper end thereof. A plurality of tapped holes and a plurality of spring receiving holes extend into the upper end of the mandrel parallel to the axis thereof. A tubular collar includes a closed lower end having an axially disposed hole for receiving the slotted boss of the mandrel therethrough. The closed end of the collar includes a plurality of holes aligned with the spring holes and tapped holes of the mandrel. A piston is slidably received within the collar and about the boss, and includes a resilient bumper projecting outwardly from the end thereof. A first plurality of screws extends through the closed end of the collar and is received in tapped holes in the piston, the heads of the first plurality of screws being disposed in the spring receiving holes of the mandrel. A second plurality of screws extends from the closed end of the collar and are received within the tapped holes of the mandrel. When the bumper end of the piston is driven against a work piece, the heads of the first screws impinge upon the springs and permit resilient retraction of the piston within the assembly, exposing the tip of a punch or the like supported within the mandrel. As the tool holder retracts from the workpiece, the piston pushes the workpiece out of engagement with the punch, freeing the punch from the work.
REFERENCES:
patent: 2882971 (1959-04-01), Bennett et al.
patent: 3429212 (1969-02-01), Weisbeck
patent: 3540339 (1970-11-01), Killaly
patent: 3815459 (1974-06-01), Daniels
Cohen Howard
Schran Donald R.
Zimmerman Harris
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