Apparatus for machining pilger rolls and the like

Claim 2

Apparatus for duplicating the contour of a non-uniform peripheral groove of a master roll in the periphery of a work roll, comprising: a base, shaft means rotatably carried by said base and supporting said master and work rolls, motor means for driving said shaft means so that both rolls rotate at the same speed, follower means cooperable with said master roll and cutter means cooperable with said work roll, table means on which said follower and cutter means are mounted in fixed, spaced relation, connection means between said table means and said base for supporting said table means for planar movement relative to said base, a rotatable shaft carried by said base and having connection with said table means whereby rotation of said shaft effects shifting of said table in a plane, means operable to urge said table means and thus said follower and cutter means in a direction whereby each engages respectively the periphery of said master roll and said work roll, said follower means being moved toward and away from and laterally of the axis of said master roll through engagement with the contour surface of said groove in said master roll and translating such movement to said cutter means through said table means so that said cutter means duplicates such groove in said work roll, said connection means between said table means and said base comprising a parallel linkage system which constrains said table means to orbital movement in its plane, whereby to maintain said follower and cutter means at a predetermined angle with respect to the axes of said master and work rolls, through the entire formation of the duplicate groove in said work roll.

Claim 3

The construction according to claim 1 wherein said follower means is a radially adjustable wheel and wherein said cutter means is a driven, rotatable cutting disc, said parallel linkage system maintaining said follower wheel and said cutter disc so that their respective flatwise planes are at right angles to the axes of said master and work rolls.

Claim 4

The construction according to claim 2 wherein said means operable to urge said table means provides a component force the direction of which varies from a direction substantially parallel to the axes of said master and work rolls to a direction substantially normal to said axes.

Claim 5

The construction according to claim 2 wherein said parallel linkage comprises sets of links at four marginal places of said table means, each set of links having ends pivoted to each other, and one link pivotally connected to said table means and the other link pivotally connected to said base.

Claim 6

The construction according to claim 4 and further including a stabilizer bar having one end pivotally connected to the pivot between one set of links and its other end pivotally connected to the pivot of a diagonally disposed set of links.

Claim 7

Apparatus for duplicating the contour of a non-uniform peripheral groove of a master roll in the periphery of a work roll, comprising: a base, formed as a housing having a top closure, shaft means rotatably carried in bearings extending upwardly from said top closure, said shaft means supporting said master and work rolls, motor means for driving said shaft means so that both rolls rotate at the same speed, follower means cooperable with said master roll and cutter means cooperable with said work roll, table means on which said follower and cutter means are mounted in fixed, spaced relation, said table means being disposed within said housing and below said top closure whereby it and its connection with said base are protected from foreign matter, said follower and cutter means being carried by supports which extend upwardly from said table means and through openings in said top closure, connection means between said table means and said base for supporting said table means for planar movement relative to said base, a rotatable shaft carried by said base and having connection with said table means whereby rotation of said shaft effects shifting of said table in a plane, and means operable to urge said table means and thus said follower and cutter means in a direction whereby each engages respectively the periphery of said master roll and said work roll, said follower means being moved toward and away from and laterally of the axis of said master roll through engagement with the contour surface of said groove in said master Roll and translating such movement to said cutter means through said table means so that said cutter means duplicates such groove in said work roll.

Claim 8

Apparatus for duplicating the contour of a non-uniform peripheral groove of a master roll in the periphery of a work roll, comprising: a base, formed as a housing having a top closure, shaft means rotatably carried in bearings extending upwardly from said top closure, said shaft means supporting said master and work rolls, motor means for driving said shaft means so that both rolls rotate at the same speed, follower means cooperable with said master roll and cutter means cooperable with said work roll, table means on which said follower and cutter means are mounted in fixed, spaced relation, said table means being disposed within said housing and below said top closure whereby it and its connection with said base are protected from foreign matter, said follower and cutter means being carried by supports which extend upwardly from said table means and through openings in said top closure, connection means between said table means and said base for supporting said table means for planar movement relative to said base, a rotatable shaft carried by said base and having connection with said table means whereby rotation of said shaft effects shifting of said table in a plane, and means operable to urge said table means and thus said follower and cutter means in a direction whereby each engages respectively the periphery of said master roll and said work roll, said follower means being moved toward and away from and laterally of the axis of said master roll through engagement with the contour surface of said groove in said master Roll and translating such movement to said cutter means through said table means so that said cutter means duplicates such groove in said work roll.

Claim 9

The construction according to claim 6 wherein liquid is applied to said cutter means during the cutting of the duplicate groove in said work roll, and wherein said top closure has a rim to provide a tray for collecting said cutting liquid.

Claim 10

The construction according to claim 7 wherein said top closure and the supports carrying said follower and cutting means have cooperating rims forming a labyrinth seal to restrict liquid and foreign matter from entering said housing.

Claim 11

Apparatus for duplicating the contour of a non-uniform peripheral groove of a master roll in the periphery of a work roll, comprising: a base, shaft means rotatably carried by said base and supporting said master and work rolls, motor means for driving said shaft means so that both rolls rotate at the same speed, follower means cooperable with said master roll and cutter means cooperable with said work roll, table means on which said follower and cutter means are mounted in fixed, spaced relation, connection means between said table means and said base for supporting said table means for planar movement relative to said base, a rotatable shaft carried by said base and having connection with said table means whereby rotation of said shaft effects shifting of said table in a plane, a weight operable to urge said table means and thus said follower and cutter means in one direction whereby each engages respectively the periphery of said master roll and said work roll, means to make said weight inoperable to urge said table means, and means to urge said table means in an opposite direction when said weight is made inoperable, said follower means being moved toward and away from and laterally of the axis of said master roll through engagement with the contour surface of said groove in said master roll and translating such movement to said cutter means through said table means so that said cutter means duplicates such groove in said work roll.

Claim 12

Apparatus for duplicating the contour of a non-uniform peripheral groove of a master roll in the periphery of a work roll, comprising: a base, shaft means rotatably carried by said base and supporting said master and work rolls, motor means for driving said shaft means so that both rolls rotate at the same speed, follower means cooperable with said master roll and cutter means cooperable with said work roll, table means on which said follower and cutter means are mounted in fixed, spaced relation, connection means between said table means and said base for supporting said table means for planar movement relative to said base, a rotatable shaft carried by said base and having connection with said table means whereby rotation of said shaft effects shifting of said table in a plane, a weight operable to urge said table means and thus said follower and cutter means in one direction whereby each engages respectively the periphery of said master roll and said work roll, means to make said weight inoperable to urge said table means, and means to urge said table means in an opposite direction when said weight is made inoperable, said follower means being moved toward and away from and laterally of the axis of said master roll through engagement with the contour surface of said groove in said master roll and translating such movement to said cutter means through said table means so that said cutter means duplicates such groove in said work roll.

Claim 13

Apparatus for duplicating the contour of a non-uniform peripheral groove of a master roll in the periphery of a work roll, comprising: a base, shaft portions rotatably carried by said base and to which said master and work rolls are secured in laterally spaced relation, motor means for driving said shaft portions at the same speed, follower means cooperable with said master roll and cutter means cooperable with said work roll, table means on which said follower and cutter means are mounted in spaced relation corresponding to the spacing of said master and work rolls, connection means between said table means and said base for supporting said table means for horizontal planar movement in an orbital path relative to said base, an upright rotatable shaft carried by said base, having a track at its upper portion which runs transverse to the axis of said shaft, a plate movable longitudinally along said track, an upright pivotal bearing connection between said shaft and said table means, and means urging said plate toward one end of said track to in turn urge said follower and cutter means carried by said table means in a direction toward and into engagement with respective master and work rolls, said urging means applying a force component on said follower and cutter means, the direction of which varies as said track is rotated with said upright shaft.

Claim 14

Apparatus for duplicating the contour of a non-uniform peripheral groove of a master roll in the periphery of a work roll, comprising: a base, shaft portions rotatably carried by said base and to which said master and work rolls are secured in laterally spaced relation, motor means for driving said shaft portions at the same speed, follower means cooperable with said master roll and cutter means cooperable with said work roll, table means on which said follower and cutter means are mounted in spaced relation corresponding to the spacing of said master and work rolls, connection means between said table means and said base for supporting said table means for horizontal planar movement in an orbital path relative to said base, an upright rotatable shaft carried by said base, having a track at its upper portion which runs transverse to the axis of said shaft, a plate movable longitudinally along said track, an upright pivotal bearing connection between said shaft and said table means, and means urging said plate toward one end of said track to in turn urge said follower and cutter means carried by said table means in a direction toward and into engagement with respective master and work rolls, said urging means applying a force component on said follower and cutter means, the direction of which varies as said track is rotated with said upright shaft.

Claim 15

The construction according to claim 10 wherein the connection between said table means and said base is a parallel linkage system comprising sets of links at four marginal places of said table means, each set of links having ends pivoted to each other, and one link pivotally connected to said table means and the other link pivotally connected to said base.

Claim 16

The construction according to claim 11 and further including a stabilizer bar haVing one end pivotally connected to the pivot between one set of links and its other end pivotally connected to the pivot of a diagonally disposed set of links.

Claim 17

The construction according to claim 10 wherein said master and work rolls are rotated at a materially higher speed than the rotation of said upright shaft.

Claim 18

The construction according to claim 13 wherein said upright shaft is limited to approximately 180* of rotation.

Claim 19

The construction according to claim 10 wherein said urging means is a weight which is connected to said plate by means of a flexible cable.

Claim 20

The construction according to claim 15 and including means to make said weight inoperable.

Claim 21

Apparatus for duplicating the contour of a groove of a Pilger roll in the periphery of a roll blank, comprising: a base, horizontally disposed shaft means rotatably carried by said base and supporting said Pilger roll and said roll blank in laterally spaced relation, motor means for driving said shaft means so that both rolls rotate at the same speed, a table carried by said base for orbital movement in a horizontal plane, follower means and cutter means mounted on said table in spaced relation, said follower means being cooperable with said Pilger roll and movable toward and away from the axis thereof, and said cutter means being cooperable with said roll blank and movable toward and away from the axis thereof, a rotatable vertical shaft carried by said base, a connection between said vertical shaft and said table, comprising parts relatively movable along a horizontal line, one part being connected to said shaft and the other part being connected to said table, means for rotating said vertical shaft at a considerably slower speed than the rotation of said Pilger roll and roll blank, whereby said connection is rotated from a position wherein its parts are relatively movable along a horizontal line which is substantially parallel to the axes of said Pilger roll and roll blank, the rotation of said vertical shaft swinging said horizontal line of movement through an arc of substantially 180*, means for urging said follower means and said cutter means to engagement with their respective Pilger roll and roll blank, said follower means responding to the varying groove contour presented to it by the rotating Pilger roll to counteract the force of said urging means and thereby be rapidly moved to and fro along the horizontal line of said relatively movable parts, to cause said table to move in the same direction and in the same amount, and therefore move said cutting means in exact accordance with said follower means.

Claim 22

Apparatus for duplicating the contour of a groove of a Pilger roll in the periphery of a roll blank, comprising: a base, horizontally disposed shaft means rotatably carried by said base and supporting said Pilger roll and said roll blank in laterally spaced relation, motor means for driving said shaft means so that both rolls rotate at the same speed, a table carried by said base for orbital movement in a horizontal plane, follower means and cutter means mounted on said table in spaced relation, said follower means being cooperable with said Pilger roll and movable toward and away from the axis thereof, and said cutter means being cooperable with said roll blank and movable toward and away from the axis thereof, a rotatable vertical shaft carried by said base, a connection between said vertical shaft and said table, comprising parts relatively movable along a horizontal line, one part being connected to said shaft and the other part being connected to said table, means for rotating said vertical shaft at a considerably slower speed than the rotation of said Pilger roll and roll blank, whereby said connection is rotated from a position wherein its parts are relatively movable along a horizontal line which is substantially parallel to the axes of said Pilger roll and roll blank, the rotation of said vertical shaft swinging said horizontal line of movement through an arc of substantially 180*, means for urging said follower means and said cutter means to engagement with their respective Pilger roll and roll blank, said follower means responding to the varying groove contour presented to it by the rotating Pilger roll to counteract the force of said urging means and thereby be rapidly moved to and fro along the horizontal line of said relatively movable parts, to cause said table to move in the same direction and in the same amount, and therefore move said cutting means in exact accordance with said follower means.

Claim 23

The construction according to claim 17 wherein the connection between said vertical shaft and said table comprises, a horizontal track rotatable with said shaft and extending crosswise thereof, and a plate movable to and fro along said track, said plate having a bearing connection with said table.