Dynamic regulation of contact pressures in a blade sharpening system is provided. An example multiphase grinding wheel has a grinding face with one or more abrasive concentric rings for sharpening the cutting blade of the log saw machine, and one or more padded concentric rings consisting of fiber padding. Sharpening with the multiphase grinding wheel improves cut quality, increases blade life, removes glues and varnishes from the cutting blade, reduces blade deformation, and hones the edge of the cutting blade. A pneumatic tensioning system uses air bladders to apply dynamic cushioning and processor-controlled contact pressure between the grinding wheels and the cutting blade during sharpening. The fiber-padded grinding wheels and the air bladder tensioner provide improved sharpness of the cutting blade and longer life for the mechanical components.

Dynamic regulation of contact pressures in a blade sharpening system is provided. An example multiphase grinding wheel has a grinding face with one or more abrasive concentric rings for sharpening the cutting blade of the log saw machine, and one or more padded concentric rings consisting of fiber padding. Sharpening with the multiphase grinding wheel improves cut quality, increases blade life, removes glues and varnishes from the cutting blade, reduces blade deformation, and hones the edge of the cutting blade. A pneumatic tensioning system uses air bladders to apply dynamic cushioning and processor-controlled contact pressure between the grinding wheels and the cutting blade during sharpening. The fiber-padded grinding wheels and the air bladder tensioner provide improved sharpness of the cutting blade and longer life for the mechanical components.

A cutting tool for cutting pipes of varying diameters includes a body having an opening extending along a predetermined axis through the body, and a cutting blade extending into the opening along a plane extending at right angles to the predetermined axis. The body includes a plurality of pipe support members, which are spaced from one another and configured to contact an outer surface of a pipe received by the tool, and a plurality of flexible connection members that connect the pipe support members to one another.

A cutting tool for cutting pipes of varying diameters includes a body having an opening extending along a predetermined axis through the body, and a cutting blade extending into the opening along a plane extending at right angles to the predetermined axis. The body includes a plurality of pipe support members, which are spaced from one another and configured to contact an outer surface of a pipe received by the tool, and a plurality of flexible connection members that connect the pipe support members to one another.

A guide carriage for a cutting device for cutting a cylindrical workpiece. The carriage has a tool carrier for the cutting device and a tensioning member which wraps around the workpiece and is guided over a tensioning element. A tensioning device disposed on a chassis acts on the tensioning element. The tensioning device exerts a tensioning force on the tensioning member via the tensioning element. The tensioning member, a belt, is secured non-displaceably on the periphery of the workpiece. The chassis is movable in the peripheral direction of the workpiece along the belt. The belt bears a connecting element, by which the belt is closed. The connecting element is not fully traversable by the guide carriage. In order to be able to execute a full cut over the periphery, the tool carrier enables the cutting device to be mounted in a first and alternatively a second working position.

A guide carriage for a cutting device for cutting a cylindrical workpiece. The carriage has a tool carrier for the cutting device and a tensioning member which wraps around the workpiece and is guided over a tensioning element. A tensioning device disposed on a chassis acts on the tensioning element. The tensioning device exerts a tensioning force on the tensioning member via the tensioning element. The tensioning member, a belt, is secured non-displaceably on the periphery of the workpiece. The chassis is movable in the peripheral direction of the workpiece along the belt. The belt bears a connecting element, by which the belt is closed. The connecting element is not fully traversable by the guide carriage. In order to be able to execute a full cut over the periphery, the tool carrier enables the cutting device to be mounted in a first and alternatively a second working position.

The present disclosure provides an optical fiber cutting knife, including: a cutting tool post, a head cover, a fiber placing groove, a blade guide rail, and a blade fixed on the blade guide rail, at least a first magnet of a first polarity installed in the blade guide rail, and at least a second magnet of a first polarity and at least a third magnet of a second polarity installed on the cutting tool post, the head cover being installed on the cutting tool post, the fiber placing groove being installed inside the cutting tool post, and the blade guide rail being placed on an outside of the cutting tool post. The first magnet moves from a location corresponding to a second magnet to a location corresponding to a third magnet to form an automatic blade-retracting mechanism to automatically reset a position of the blade guide rail.

The present disclosure provides an optical fiber cutting knife, including: a cutting tool post, a head cover, a fiber placing groove, a blade guide rail, and a blade fixed on the blade guide rail, at least a first magnet of a first polarity installed in the blade guide rail, and at least a second magnet of a first polarity and at least a third magnet of a second polarity installed on the cutting tool post, the head cover being installed on the cutting tool post, the fiber placing groove being installed inside the cutting tool post, and the blade guide rail being placed on an outside of the cutting tool post. The first magnet moves from a location corresponding to a second magnet to a location corresponding to a third magnet to form an automatic blade-retracting mechanism to automatically reset a position of the blade guide rail.

The application relates to a method and apparatus for manufacturing a natural fiber based staple fibers. The application further relates to the staple fibers, staple fiber based raw wool and products comprising such. A method comprises providing a cellulose suspension (101, 310, 510) including water, refined cellulose fibrils and at least one rheology modifier, directing the cellulose suspension through a nozzle (102, 320, 520) onto a surface (300, 400, 500), drying the cellulose suspension onto the surface (103, 300, 400, 500) for forming a fiber (350, 550), and cutting the cellulose suspension on the surface for forming staple fibers (105).

A core end piece collector for handling cut off end pieces during processing of tubular cores has a carrying member and a catcher arranged on the carrying member. The catcher protrudes from the carrying member at an angle in relation to the longitudinal direction of the carrying member.