Straightening machine
AssigneePrutton Corporation
InventorRonald J. Matej
Life of this patent
Estimating the term…
Abstract
A machine is provided to straighten both the stem and the head of flanged stem workpieces such as poppet valves by rolling the stem of the workpiece between a rotary die and an arcuate stationary die. The flange of the workpiece being larger than the stem overlaps the rotary second die to have a first path of a contact portion of the flange. A straightening roller is journalled for orbiting movement on a rotary straightening member and the straightening roller has a contact area movable in a second path intersecting the first path to engage the flange and bend the workpiece cyclically. This bending effects a straightening of such flange. The above description is merely one form of the invention and is not to be construed as limiting on the scope of the invention.
Claims18
A straightening machine for a flanged stem workpiece, comprising in combination:
- a base,
- an arcuate first die fixed on said base,
- a rotary second die journalled on said base on a first axis,
- feed means to feed workpieces to an entrance end of said first die for rotary passage of the stems of such workpieces between said first and second dies in accordance with rotation of said second die,
- the flange of the workpiece being larger than the stem thereof to have a contact portion of the flange continually overlapping said rotary second die to lie nominally in a first path of a circular arc on a radius from said first axis,
- a straightening member journalled for rotation on said base,
- a straightening roller connected for orbiting movement in accordance with rotation of said straightening member and with a contact area on the periphery of said roller,
- and movement means including rotation of said straightening member to establish movement of said roller contact area in a second path intersecting said first path during rotary passage of such workpiece stem between said dies to engage said flange and bend said workpiece cyclically with the amount of bending increasing and then decreasing thereafter toward the exit end of said first die to effect a straightening of such flange.
Dependencies are inferred from the claim text.