Tooling assembly for an impact press
OwnerLennart J. Lindellinventor
Life of this patent
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Abstract
A tooling assembly for use with a mechanical impact press includes a pair of die blocks which effect cutting of rods, bars and tubes by the rapid misalignment of aligned apertured tools. Realignment is achieved by a reciprocable cam which also limits the extent of misalignment. Means are provided for clamping or dragging the end of a workpiece stock upstream from the prospective cutting plane. A wedge shaped recess adjacent to the aperture of the movable tool or die block provides a high degree of uniformity in workpiece length as measured at various points of a given workpiece. Where the workpiece stock is tubular, a floating mandrel is disposed within the workpiece in the upstream tool or die block while a reciprocable mandrel supports, receives, resizes and discharges the tubular workpiece.
Claims16
A tooling assembly for use with a mechanical impact press having a ram for severing a workpiece blank from an elongated stock of workpiece material, said tooling assembly comprising:
- (a) a housing adapted to be fixedly secured to the impact press;
- (b) a pair of planar shearing die blocks supported by said housing, having faces in flatwise engagement with each other and having normally coaxially aligned bores through which the stock is to pass, one of said die blocks having means for being impacted by the ram, and being guided by said housing for limited movement transverse to its bore in response to such impact;
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- (c) a cam slidably guided in said housing and having means enabling it to be reciprocated by the impact press between a first and a second position, said cam in said first position enabling said limited movement of said die block to an extent such that said bores are out of alignment, and said cam in being driven to said second position acting on said one die block for restoring said bore alignment.
A tooling assembly for use with a mechanical impact press having a ram for severing a workpiece blank from an elongated stock of workpiece material, said tooling assembly comprising:
- (a) a housing adapted to be fixedly secured to the impact press;
- (b) a pair of planar shearing die blocks supported by said housing, having faces in flatwise engagement with each other and having normally coaxially aligned bores through which the stock is to pass, one of said die blocks having means for being impacted by the ram, and being guided by said housing for limited movement transverse to its bore in response to such impact;
- (c) means in said housing in a first position enabling said limited movement of said one die block to an extent such that said bores are out of alignment, and in a second position acting on said one die block for restoring said bore alignment;
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- (d) said face of said one die block having a wedge shaped recess gradually widening from the axis of its bore to a point beyond said bore located toward the ram.
A tooling assembly for use with a mechanical impact press having a ram for severing a workpiece blank from an elongated tubular stock of workpiece material, said tooling assembly comprising:
- (a) a housing adapted to be fixedly secured to the impact press;
- (b) a pair of planar shearing die blocks supported by said housing, having faces in flatwise engagement with each other, and having normally coaxially aligned bores through which the stock is to pass, one of said die blocks having means for being impacted by the ram, and being guided by said housing for limited movement transverse to its bore in response to such impact;
- (c) means in said housing in a first position enabling said limited movement of said one die block to an extent such that said bores are out of alignment, and in a second position acting on said one die block for restoring said bore alignment;
- (d) a mandrel slidably supported on said housing and having means enabling it to be reciprocated by the impact press between a first and a second position, said mandrel in said first mandrel position being adapted to extend into the leading end of the tubular stock in the downstream one of said die blocks, said mandrel in said second mandrel position being retracted from said die blocks;
- (d) a floating mandrel being adapted to be received in the tubular stock and to remain during operation in the upstream one of said die blocks;
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- (f) a wiper on said housing engageable with the leading end of a severed workpiece on said reciprocable mandrel in response to its retracting movement to strip the severed workpiece therefrom.
Dependencies are inferred from the claim text.