Supported shear with reversible drive and method of operating same
OwnerJohn J. Borzyminventor
Life of this patent
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Abstract
A reversible linear hydraulic drive system for a bidirectional supported shear having an adjustable stroke length. A method for improving the quality of the tube ends after shearing using a reversible partial orbital path is also disclosed.
Claims9
In a supported shear of the type in which axially adjacent and integral lengths of linear stock such as tubing are laterally displaced relative to one another along a shear plane at right angles to the longitudinal axis of said stock:
- non-driven ram means for receiving and holding said stock;
- driven ram means adjacent the non-driven ram means for receiving said stock;
- and
- means for alternately driving said moveable ram in opposite directions through an orbital path relative to the non-driven ram.
For use in combination with a bladeless shear for linear stock which shear comprises a stock-receiving ram having an eccentrically driven wheel disposed therein, a wheel drive comprising:
- a drive shaft connected to said wheel;
- a pinion connected to said shaft for rotation therewith;
- first and second racks engaging said pinion and linearly translatable to rotate the pinion in respective first and second opposite directions;
- and
- power means for translating said racks.
In a bladeless shear device of the type having first and second tools aligned with a work piece axis and means for causing orbital motion of one of the tools relative to the other:
- an actuator having a linearly translating drive component;
- and
- means for converting the linear translation of the drive component into orbital motion of said one tool.
Dependencies are inferred from the claim text.