Rotating log clamp

A method of clamping a product roll in a rotating log saw clamp, the method comprising:

• utilizing a rotating log saw clamp including a clamping structure positionable about the product roll and having first and second rings operatively connected for rotational movement relative to one another about an axis between a clamping and an unclamping open position of the first and second rings;
• rotating the first and second rings in a common direction about the axis;
• the first ring being mounted concentrically with the axis and adapted to move the clamping structure for selectively clamping and unclamping the product roll, the first ring being drivable for rotation about the axis by a first drive in such a manner that the first ring is selectively rotatable continuously about the axis;
• the second ring being mounted concentrically with the axis and rotatably coupled to the first ring, the second ring being driveable for rotation about the axis by the first drive and further being driveable for rotation relative to the first ring by a second drive, the second ring adapted to be selectively continuously rotatable with the first ring, whereby the second ring is rotatable about the axis and is rotatable relative to the first ring as the first and second rings rotate together in the common direction, the second ring being rotated relative to the first ring to selectively move the clamping structure toward and away from the axis to adjust the clamping of the product roll;
• and
• adjusting the clamping of the product roll by the clamping structure by driving the second ring separately from the first ring for rotation relative to the first ring during rotation of the first and second rings together in the common direction.

A method of clamping a product roll in a rotating log saw clamp, the method comprising:

• clamping a product roll utilizing a rotating log saw clamp including a frame, a housing positionable about an axis for clamping a product roll, a plurality of clamp members and a ring operatively connected for rotational movement relative to the axis between a clamping and an unclamping open position thereof, wherein said clamping includes:
• rotating the housing and the ring in a common direction about the axis;
• and
• moving the plurality of clamp members relative to the axis by rotating the ring relative to the housing independently of the rotation of the housing during the common rotation of the housing and ring;
• the housing mounted concentrically with the axis and rotatably coupled to the frame for selective continuous rotation about the axis, the housing disposed for rotation with the product roll;
• the plurality of clamp members being positioned about the axis and movable relative to the axis for clamping the product roll;
• and
• the ring being mounted concentrically with the axis and rotatably coupled to the housing for selective continuous rotation about the axis with the housing, the housing and the ring each being positively driven to cause the ring to be rotatable about the axis in two opposite directions relative to the housing while the ring and the housing rotate in the common direction, wherein the relative movement about the axis of the ring and the housing with respect to one another selectively moves the plurality of clamp members toward and away from the axis.