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US 4,539,880 AGranted
Self-contained corner radius punch and die machine
OwnerEugene F. Barber, Steven C. Barberinventors
Life of this patent
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Abstract
A self-contained, self-actuating corner radius punch and die machine is described including a plurality of spaced apart side-by-side cutting edges arranged in transverse alignment above a worktable. A motive power actuator, e.g., a hydraulic cylinder is mounted below the worktable with its actuator rod extending upwardly through the table and being connected to the punch. A guide is provided for preventing the punch from tilting about a horizontal axis and a stiffening plate is secured to the punch to rigidify the structure and to serve as a support for the guide.
Claims15
A self-contained, independently operable corner radius punch and die machine comprising,
- a supporting framework including a die support having a die shoe at the upper end thereof,
- a motive power actuator means mounted at the top of the framework below the die support and having an actuator rod extending upwardly past the die shoe,
- a die mounted on the die shoe,
- a punch support shoe having a punch mounted thereon above the die and adapted to reciprocate thereabove in cooperative aligned relationship therewith to shear off the portions of a workpiece extending therebetween,
- the upper end of the actuator rod being connected to the punch shoe,
- dual guide means for maintaining relative alignment between the punch and the die comprising,
- a first pair of laterally spaced apart parallel vertically disposed guide post and bushing assemblies operatively connected between the punch and die at each side thereof,
- a second fixed guide assembly attached to the die base including at least one vertically disposed guiding groove and a gib with parallel side edges connected rigidly to the punch and mounted within the groove with adjacent side surfaces of the gib and the groove in sliding engagement,
- the operation of the motive power actuator means acting to draw the actuator rod in a downward direction and being adapted to force the punch past the cooperating edge of the die to sever corner portions from the workpiece and the first guide means preventing motion of the punch in a horizontal plane in any direction and the second guide means restricting the motion thereof to prevent the punch from being tilted about a horizontal front-to-rear axis thereof during operation.
6 more elements
A self-contained, independently operable corner radius punch and die machine for rounding the corners of a workpiece to any one of several selected arcs of different sizes,
- said apparatus comprising a supporting framework including a die support at the upper end thereof and a die mounted on the support in a horizontal plane,
- a punch mounted above the die,
- means aligning the punch and die for relative movement whereby the punch can be reciprocated relative to the stationary die,
- support means for the punch including a vertically disposed rigidifying and stiffening plate rigidly connected thereto being positioned vertically,
- a second stationary plate mounted parallel to the stiffening plate,
- a guide assembly comprising a pair of laterally spaced apart guide openings and gibs operatively associated between the two parallel plates with the gibs having side edges adapted to slidingly engage the side edges of the associated side openings therefor,
- the spaced apart gib and guide opening assemblies being adapted to prevent torsion of the punch relative to the die about a horizontally disposed fore-and-aft axis, and
- a motive power actuator means operatively connected between the punch and die and being mounted upon said axis for imparting reciprocation to the punch relative to the die.
5 more elements
A self-contained, and independently operable corner radius punch and die machine comprising,
- a supporting framework having a punch and die base plate at the top thereof,
- a stationary die connected to the base plate,
- a vertically movable reciprocating punch mounted thereabove for movement relative thereto,
- the punch and die having a plurality of spaced arcuate cooperating pairs of cutting edges coinciding in shape with each other and being distributed in a side-by-side relationship and in transverse alignment,
- a motive power actuator means mounted upon the supporting framework and being supported thereby,
- motive power actuator means operatively connected to the punch for reciprocating the punch relative to the stationary die when the actuator is energized,
- said die being supported upon a generally U-shaped die shoe having a pair of rearwardly extending legs, a portion of the die shoe being cut away between the legs to define a rearwardly facing recess to accommodate the removal of chips severed from a workpiece during operation,
- a vertically disposed guide plate rigidly secured to the legs and extending upwardly therefrom,
- said plate having a cut-away opening at the lower edge thereof in alignment with the cut-away recess in the die shoe to facilitate complete removal of the chips,
- a guide means operatively connected between the guide plate and the punch for restricting the motion of the punch along a vertical axis relative to the die.
7 more elements
Dependencies are inferred from the claim text.