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US 4,555,966 AGranted
Punch press with multitool punch assembly
AssigneeTrumpf GmbH & Co.
InventorHans Klingel
Life of this patent
Estimating the term…
Abstract
A punch press has a punching tool assembly removably coupled to the ram, and it carries a plurality of punching pins which are individually selectable for a punching operation. A rotatable cam moves the selected punch pin from a retracted position in the tool assembly to an operative punching position, and the cam is driven by a retractable drive mechanism which is movable into engagement with the rotatable cam to effect such rotation and retracted to an inoperative position, by a moving means. Control means is provided to effect operation of the moving means and of the drive mechanism, and is operable to effect precise rotation of the cam member.
Claims20
In a punch press, the combination comprising:
- A. a housing;
- B. a ram reciprocatably mounted in said housing;
- and
- C. a multitool punch assembly operatively coupled to said ram, said assembly comprising:
- (i) a coupling member,
- (ii) a punch pin support member,
- (iii) at least two punch pins disposed within bores in said support member and having a working end adapted to strike an associated workpiece and an opposite end, said pins being movable in said bores along axes parallel to the axis of reciprocation of said ram from an operative working position to an elevated inoperative position,
- (iv) a cam member mounted for rotation about said support member, said rotatable cam member having a cam surface thereon adapted to overlie said opposite end of any one of said punch pins in said support member upon rotation thereabout, said cam member moving a selected one of said punch pins from its retracted position to its working position, and
- (v) means for returning previously selected punch pins to its inoperative position;
- D. drive means in said housing engageable with said rotatable cam member for effecting rotation thereof to effect selection and movement of various punch pins in said multitool assembly;
- E. means for moving said drive means into engagement with said rotatable cam member of said multitool punch assembly to effect rotation thereof and for retracting said drive means to an inoperative portion free from engagement with said cam member;
- and
- F. control means for operating said moving means to move said drive means into engagement with said rotatable cam member and then to effect operation of said drive means to rotate said cam member to selectively move a punch pin into working position and then to operate said moving means to retract said drive means to its inoperative position.
10 more elements
In a punch press, the combination comprising:
- A. a housing;
- B. a ram reciprocatably mounted in said housing;
- and
- C. a multitool punch assembly operatively coupled to said ram, said assembly comprising:
- (i) a coupling member,
- (ii) a punch pin support member,
- (iii) at least two punch pins disposed within bores in said support member and having a working end adapted to strike an associated workpiece and an opposite end, said pins being movable in said bores along axes parallel to the axis of reciprocation of said ram from an operative working position to an elevated inoperative position,
- (iv) a cam member mounted for rotation about said support member, said rotatable cam member having a cam surface thereon adapted to overlie said opposite end of any one of said punch pins in said support member upon rotation thereabout, said cam member moving a selected one of said punch pins from its retracted position to its working position, and
- (v) means for returning previously selected punch pins to its inoperative position;
- D. drive means in said housing engageable with said rotatable cam member for effecting rotation thereof to effect selection and movement of various punch pins in said multitool assembly, said cam member having a gear portion and said drive means including a drive gear engageable with said gear portion to effect rotation thereof;
- E. a support member in said housing slidably supporting said drive means for movement in a direction perpendicular to the axis of reciprocation of said ram;
- F. means for moving said drive means into engagement with said rotatable cam member of said multitool punch assembly to effect rotation thereof and for retracting said drive means to an inoperative portion free from engagement with said cam member;
- and
- G. control means for operating said moving means to move said drive means into engagement with said rotatable cam member and then to effect operation of said drive means to rotate said cam member to selectively move a punch pin into working position and then to operate said moving means to retract said drive means to its inoperative position, said control means is operable to ensure operation of said retracting means to maintain said drive means in its inoperative position during reciprocation of said ram.
11 more elements
Dependencies are inferred from the claim text.