Double cut die set
AssigneeAlpha Industries, Inc.
InventorJohn Graham
Life of this patent
Estimating the term…
Abstract
A cut-off die set of the double cut type in which sections of tubing are successively severed from a length of tubing utilizing a notching cut followed by a severing cut. A notching blade is mounted to a notching blade holder slidably disposed on an adjustable mounting block. The notching blade holder includes a cam follower mounted thereon. The die set further includes a clamping apparatus having reciprocal clamping jaws operative to move between a clamped position and a released position whereby operation of the clamping jaws and the notching blade are controlled through a single cam mounted to an upper platen of the die set.
Claims20
A cut-off die set used to sever sections of an elongated workpiece comprising:
- upper and lower platens interconnected for reciprocal motion;
- a shearing blade mounted to the upper platen;
- a support mounted to said lower platen;
- a notching blade;
- a notching blade holder releaseably connected to said support, such that said notching blade holder may be adjustably positioned on said support;
- means for adjusting the position of said notching blade holder on said support wherein said means remains stationary during said notching stroke and said support remains stationary;
- a pair of opposed jaws for engaging the workpiece;
- first and second mounting members, said jaws mounted to said first and second mounting members wherein said first and second mounting members are operative to move said jaws between an open, released position and a closed, clamped position;
- first and second cam followers connected to said first and second mounting members;
- a third cam follower mounted to said notching blade holder;
- and
- a cam having first, second and third cam surfaces thereon, said first, second and third cam followers engaging said first, second and third cam surfaces respectively, such that movement of said cam displaces said cam followers in a timed relationship.
A cut-off die set used to sever sections of an elongated stock comprising:
- upper and lower platens interconnected for reciprocal motion;
- a shearing blade mounted to said upper platen;
- a support mounted to said lower platen;
- a mounting block engaging to said support;
- a notching blade secured to a notching blade holder, said notching blade holder mounted on said mounting block for reciprocal motion;
- a cam follower secured to said notching blade holder;
- a bracket secured to said mounting block, a spring positioned between said notching blade holder and said bracket;
- and
- a cam secured to said upper platen, said cam having a cam surface wherein said cam follower engages said cam surface.
A cut-off die set used to sever sections of an elongated stock comprising:
- upper and lower inner platens interconnected for reciprocal motion in a first direction;
- a shearing blade mounted to the upper platen;
- a clamping apparatus mounted to the lower platen;
- a notching blade coupled to a notching blade holder, said notching blade holder mounted for reciprocal motion in a second direction on a holder support member;
- an upright stationary member mounted to the lower platen, said holder support member adjustably mounted on said upright stationary member for movement in a direction having a component thereof parallel said first direction;
- a unitary actuating means engaging both said clamping apparatus and said notching blade holder, said actuating means operative by the reciprocal motion of said platens to actuate said clamping apparatus and said notching blade holder.
Dependencies are inferred from the claim text.