Patent ID: 11878438
Assignee: nan
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. An orbital knife comprising:
a. a support structure;
b. a yoke rotatably attached to the support structure having a yoke axis of rotation, wherein the yoke comprises a yoke hub and a plurality of yoke arms;
c. one or more rotatable knife rolls radially displaced from and parallel to the yoke hub and securely connected to at least one of the plurality of yoke arms wherein each knife roll has an axis of rotation;
d. one or more blades attached to each of the one or more knife rolls and comprising a cutting element parallel to the knife roll to which the blade of such cutting element is attached;
e. one or more sun pulleys rotatably attached to the support structure wherein each sun pulley has (1) an axis of rotation concentric with the yoke axis of rotation, and (2) associated therewith a sun pulley pitch radius;
f. an anvil roll rotatably attached to the support structure and having an axis of rotation parallel to the yoke axis of rotation; and
g. one or more planet pulleys each with a planet pulley axis of rotation and a planet pulley pitch radius, wherein (1) each knife roll has attached thereto at least one planet pulley, (2) each planet pulley is joined via a drive belt with one of the one or more sun pulleys wherein rotation of the sun pulley causes rotation of the planet pulley effectuated by the force imparted by the drive belt, and (3) the planet pulley axis of rotation of each planet pulley is concentric with the axis of rotation of the knife roll to which the planet pulley is attached; and
h. one or more phasing actuators wherein each phasing actuator is attached to the support structure, provides a force for rotation of the one or more sun pulleys, and comprises a phasing link, wherein each phasing link has rotatably attached thereto a phasing arm that is attached to one sun pulley, and wherein rotation of each of the one or more sun pulleys about the axis of rotation of such sun pulley is effectuated by the transfer of the phasing actuator force to the sun pulley phasing arm attached to such sun pulley via the phasing link of such phasing actuator attached to such sun pulley phasing arm.