A pipe cutter with gauge and reamer/beveller of the cut edges of pipe. On the body of the pipe cutter there is at least one gauge; between it and the body a cavity is delimited capable of accepting the end of a pipe (t); each gauge having on its end a mouth that varies its diameter between a minimum (d1) at its base and a maximum (d) that coincides with the gauge of the pipe (t) it accepts. There is also at least one blade on each existing gauge or on a beveller equipped with one or several portions (S) with at least one blade on each of them. A pipe (t) is inserted in the corresponding gauge, first gauging the diameter of its cut edge and then the blades simultaneously bevel and ream the cut pipe (t) edge.

Pipe machining apparatuses and bearing assemblies are provided. In one aspect, a pipe machining apparatus includes a frame, a tool carrier, a first roller bearing and a second roller bearing. The tool carrier is coupled to and movable relative to the frame and defines a race therein. The first roller bearing includes a first shaft and a first roller rotatably coupled to the first shaft. The first roller is at least partially positioned in the race and is rotatable about a first roller bearing axis adapted to remain substantially fixed relative to the frame. The second roller bearing includes a second shaft and a second roller rotatably coupled to the second shaft. The second roller is at least partially positioned in the race and is rotatable about a second roller bearing axis. The second roller bearing is adjustable to move the second roller bearing axis relative to the frame.

A portable machine includes a controller to receive target parameters associated with a workpiece to be worked. A front assembly includes a first baseplate which is stationary during operation, a first actuator to controllably move the workpiece bidirectionally along a longitudinal axis thereof, a second actuator to controllably rotate a second baseplate relative to the first baseplate, and at least one tooling unit. A rear assembly includes a third baseplate with a rolling base, a fourth baseplate rotatably coupled to the third baseplate, and a rear workpiece clamp. Sensors generate signals representing a distance between the first and third baseplates, an orientation of the first baseplate relative to the second baseplate, and an orientation of the third baseplate relative to the fourth baseplate. The controller generates control signals to the tooling unit and the first and second actuators based on at least the target parameters and the sensor signals.

The present disclosure provides a cutter and a method for machining a tubular component. The cutter for machining a tubular component comprises a cutter body, a first cutter portion and a second cutter portion being provided on a front end in a longitudinal direction of the cutter body, the first cutter portion extending along the longitudinal direction of the cutter body, and the second cutter portion being located on a rear side of the first cutter portion in the longitudinal direction and protruding from a main side surface of the cutter body in a direction substantially perpendicular to the main side surface.

The present disclosure provides a cutter and a method for machining a tubular component. The cutter for machining a tubular component comprises a cutter body, a first cutter portion and a second cutter portion being provided on a front end in a longitudinal direction of the cutter body, the first cutter portion extending along the longitudinal direction of the cutter body, and the second cutter portion being located on a rear side of the first cutter portion in the longitudinal direction and protruding from a main side surface of the cutter body in a direction substantially perpendicular to the main side surface.

A method for synchronous and specified-length cutting of continuously-formed materials by multiple lathes connected in series in production lines of continuously-formed materials, such as steel pipes and steel sections. A synchronous and specified-length cutting machine having multiple lathes connected in series is provided with two or more lathes that are separately equipped with a cutting tool. The lathes are installed in series on a rail parallel to a material and are driven by respective driver means to move back and forth according to a set procedure; in the case that the speed of the lathe is synchronous with that of the material, the cutting tool on the lathe cuts the material according to a specified length. The cutting machine can be adapted to high-speed production lines, allows a small minimum specified length, possesses cutting tools having a long service life, and achieves smooth cuts.

A method for synchronous and specified-length cutting of continuously-formed materials by multiple lathes connected in series in production lines of continuously-formed materials, such as steel pipes and steel sections. A synchronous and specified-length cutting machine having multiple lathes connected in series is provided with two or more lathes that are separately equipped with a cutting tool. The lathes are installed in series on a rail parallel to a material and are driven by respective driver means to move back and forth according to a set procedure; in the case that the speed of the lathe is synchronous with that of the material, the cutting tool on the lathe cuts the material according to a specified length. The cutting machine can be adapted to high-speed production lines, allows a small minimum specified length, possesses cutting tools having a long service life, and achieves smooth cuts.

A composite sheet that includes a first sheet and a second sheet is disclosed. The first and second sheets are bonded to each other at a number of spaced apart discrete inter-sheet bond locations. The first sheet is a nonwoven material that has discrete three-dimensional deformations therein forming protrusions that extend outward from the first surface of the first sheet to their distal ends and wide base openings adjacent to the second surface of the first sheet. The second sheet is a generally planar sheet that contacts the distal ends of the protrusions on the first sheet. The second sheet is bonded to the first sheet at spaced apart inter-sheet bond locations where the first region of the first sheet contacts the second sheet.

Disclosed is an orbital cutting apparatus that is capable of freely and selectively controlling forward and backward movement of a plurality of cutting tools, allowing the cutting tools to move forward and backward and to move in an axial direction of a material to be cut so as to enable processing of various shapes as well as cutting and chamfering, and is capable of simultaneously carrying out cutting and chamfering operations for a pipe material or a heavy pipe having a thickness of dozens of mm or more.

Disclosed is an orbital cutting apparatus that is capable of freely and selectively controlling forward and backward movement of a plurality of cutting tools, allowing the cutting tools to move forward and backward and to move in an axial direction of a material to be cut so as to enable processing of various shapes as well as cutting and chamfering, and is capable of simultaneously carrying out cutting and chamfering operations for a pipe material or a heavy pipe having a thickness of dozens of mm or more.