Ammunition and explosives – Projectiles – Composite
Patent
1983-02-04
1985-10-15
Tudor, Harold J.
Ammunition and explosives
Projectiles
Composite
29 12, 295274, 72256, 72 46, 428577, 4285428, F42B 1316
Patent
active
045467056
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to sabot blanks but more particularly to a rotation-symmetrical sabot blank preferably made of a metallic material.
It is known in the art that blanks for rotation-symmetrical sabots are finished as round bars, which after being cut to length, are shaped extensively by machining and are thereafter cut into segments by means of a saw cutter. This fabrication is disadvantageously complex and cost intensive.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a sabot blank that will allow sabot fabrication to be substantially simplified and made more inexpensive.
It is another object of the present invention to provide a sabot blank, preferably made of a metallic material, for a rotation-symmetrical sabot arranged around a sub-caliber projectile in a region between the nose and tail thereof and having at least two segments, which extend along radial separating lines over the entire sabot length, characterized by the blank having preformed radial separating lines.
It is another object of the present invention to provide a process for producing a sabot blank, preferably made of a metallic material, for a rotation-symmetrical sabot arranged around a sub-caliber projectile in a region between the nose and tail thereof and having at least two segments, which extend along radial separating lines over the entire sabot length, characterized by the blank having preformed radial separating lines and characterized by the following process: from a starting blank billet there is formed without the formation of shavings over the entire length of the blank billet a substantially circular cross-sectional shape, and radial cuts having substantially wedge-shaped cross-sections are introduced; the number of radial cuts corresponds to the number of separating lines of the sabot; the cross-sectional surface is further formed without the formation of shavings and the wedge-shaped cuts are thereby closed, whereby the mutually adjoining surface regions are not welded to each other; the semi-finished product is divided transversely to the longitudinal axis into pre-determined lengths of a corresponding blank.
It is yet still another object of the present invention to provide a process for producing a sabot blank, preferably made of a metallic material, for a rotation-symmetrical sabot arranged around a sub-caliber projectile in a region between the nose and tail thereof and having at least two segments, which extend along radial separating lines over the entire sabot length, characterized by the blank having preformed radial separating lines whereby the semi-finished product of the first process step is produced by means of extrusion presses and the semi-finished product of the second process step is produced from the semi-finished product of the first process step by means of the reduction rollers.
It is yet still another object of the present invention to provide a process for producing a sabot blank, preferably made of a metallic material, for a rotation-symmetrical sabot arranged around a sub-caliber projectile in a region between the nose and tail thereof and having at least two segments which extend along radial separating lines of the entire sabot length, characterized by the blank having preformed radial separating lines whereby there is introduced a separating medium, for example, graphite, into the cut surfaces prior to the closing thereof.
Briefly, there is a blank for a sabot having pre-machined separating lines which are fabricated for the purpose of avoiding cost-intensive machining by means of extrusion presses and subsequent reduction rolling.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a cross-sectional view of the first semi-finished blank product of a first process step of the present invention;
FIG. 2 is a cross-sectional view of a semi-finished blank product corresponding to the product of the first step of a second process step of the present invention;
FIG. 3 is a cross-sectional view of a second semi-finished blank product of th
REFERENCES:
patent: 2183502 (1938-06-01), Lefere
patent: 2933799 (1957-05-01), Semon
patent: 3430570 (1969-03-01), Barr
patent: 3551972 (1971-01-01), Engel
patent: 4360954 (1982-11-01), Burns et al.
Langenohl Rolf
Mestekemper Heinz
Rheinmetall GmbH
Tudor Harold J.
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