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US RE35,519 EGranted
Method and apparatus for smooth-rolling and deep-rolling multi-stroke crankshafts
AssigneeWilhelm Hegenscheidt GmbH
InventorRudolf Winkens
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AssigneeWilhelm Hegenscheidt GmbH
InventorRudolf Winkens
Estimating the term…
A method and apparatus for smooth-rolling and deep-rolling the journal pins of multi-crank crankshafts divides the crank pins into two groups, each including alternating crank pins, since the space between neighboring crank pins is insufficient for simultaneously rolling all of the pins including the main bearing pins in one operation. Each group of crank pins is then rolled separately in succession, whereby one group includes the main bearing pins. Thus, a crankshaft, including any number of closely spaced crank pins, can be completely machined in two rolling operations. In order to carry out this method a rolling apparatus includes crank pin rolling devices for each of the pins of one group. The rolling devices are axially slideably adjustable in unison between two determinable positions in which they may be fixed or locked after adjustment. The crank pin rolling devices are spaced from one another with a sufficient spacing in the axial sliding direction so that at least one crank pin can pass between two adjacent crank pin rolling devices.
A method for smooth-rolling and deep-rolling a plurality of pins, of a crankshaft with a single pin rolling machine , comprising the following steps:
An apparatus for smooth-rolling and deep-rolling of a plurality of pins of a crankshaft, comprising frame means, means for rotatably holding said crankshaft, means for rotationally driving said crankshaft about a rotation axis, means for simultaneously rolling a group of non-neighboring pins, crosswise carriage means for pendulously carving said rolling means and for moving said rolling means in a direction substantially radially to said rotation axis, means for axially moving said rolling means in a direction parallel to said rotation axis, means for fixing an axial working position of said rolling means in any one of a plurality of working positions, and a spacing between neighboring rolling means in an axial direction, said spacing being sufficient for a pin of one pin group presently not being rolled to be positioned between two neighboring rolling means when said neighboring rolling means are rolling another group of pins.
The apparatus of clam 6, wherein said means for fixing an axial working position clamping means which are selectively operative on said axial moving means.
A method for rolling a plurality of pins of a crankshaft with a crankshaft rolling machine having a plurality of pin rolling devices, comprising the following steps:
A method for rolling a plurality of pins of a crankshaft with one set of laterally spaced pin rolling devices of a pin rolling machine, comprising the following steps:
A method of rolling first and second groups of non-neighboring crank pins of a crankshaft using at least some of the same rolling devices of a pin rolling machine for rolling both groups of crank pins comprising the steps of:
An apparatus for rolling first and second groups of non-neighboring pins of a crankshaft having a centralized rotational axis, comprising frame means, chuck means for holding said crankshaft so that it can be rotatably driven about said axis, motor means for rotationally driving said chuck means and said crankshaft about said rotational axis, neighboring rolling means for rolling the first group of non-neighboring pins of said crankshaft and for subsequently rolling the second group of non-neighboring pins of said crankshaft, support means for carrying said neighboring rolling means and for moving said neighboring rolling means in a radial direction with respect to said rotational axis so that said rolling means can roll the first group of pins in a first rolling operation, a drive for relatively moving said neighboring rolling means and said crankshaft with respect to one another in the direction of said rotational axis after said first rolling operation so that said rolling means can be operatively engaged with said second group of pins for a second rolling operation.
An apparatus for rolling first and second groups of crank pins of a crankshaft having a centralized rotational axis, comprising a frame, a crankshaft holding chuck, a motor for driving said chuck and said crankshaft about the rotational axis, crank pin rolling tools, support structure carrying said pin rolling tools and movable in a radial direction with respect to said rotational axis so that said rolling tools can roll the first group pins in a first rolling operation, a drive for relatively moving said crank pin rolling tools and said crankshaft with respect to one another in the direction of said rotational axis after said first rolling operation so that at least some of said crank pin rolling tools can roll the second group pins of said crankshaft in a second rolling operation.
An apparatus for separately rolling discrete groups of non-neighboring pins of a crankshaft at first and second working positions, said crankshaft having an axis of rotation, comprising a frame, a crankshaft holding and turning mechanism, mechanism for turning said crankshaft about said axis, neighboring crank pin rolling devices, a cross-wise carriage for carrying said rolling devices and for moving said rolling devices in a direction substantially radial to said axis, a drive arrangement for axially moving said crankshaft and said rolling devices relative to one another between said first and second working positions, said apparatus having a spacing between neighboring rolling devices in an axial direction to accommodate pins of a second group of non-neighboring pins when said neighboring rolling devices are rolling a first group of pins, and stop means operative with said drive arrangement to establish at least said second position in which said rolling devices roll said pins of said second group while at least some said first pins of a first group are disposed between said rolling devices.
Dependencies are inferred from the claim text.