An apparatus for cutting a pipe has a base comprising a pipe support having at least one set of lower rollers and an upper frame supporting a cutting apparatus and at least one upper roller. The upper frame is moveable relative to the base between an open position in which the pipe may be inserted between the at least one set of lower rollers and the at least one upper roller, and a clamping position in which the pipe is in contact with the at least one set of lower rollers and the at least one upper roller. The cutting apparatus comprises a grooving member configured to provide an annular groove on an outer surface of the pipe, a cutting member configured to cut the pipe, and a chamfering member configured to provide a chamfer on the outer surface of the pipe between a location of the annular groove and a location of the cut in the pipe.

An apparatus for cutting a pipe has a base comprising a pipe support having at least one set of lower rollers and an upper frame supporting a cutting apparatus and at least one upper roller. The upper frame is moveable relative to the base between an open position in which the pipe may be inserted between the at least one set of lower rollers and the at least one upper roller, and a clamping position in which the pipe is in contact with the at least one set of lower rollers and the at least one upper roller. The cutting apparatus comprises a grooving member configured to provide an annular groove on an outer surface of the pipe, a cutting member configured to cut the pipe, and a chamfering member configured to provide a chamfer on the outer surface of the pipe between a location of the annular groove and a location of the cut in the pipe.

A pipe cutting tool having: a plurality of rollers; a clamping member moveable between an open position in which a pipe is insertable between the plurality of rollers and a clamping position in which the pipe is secured between the rollers; a cutting apparatus having first, second, and third cutting members configured to optionally sequentially engage the pipe when positioned between the plurality of rollers; a drive motor drivingly connected to at least one of the rollers; and an actuator operatively connected to the drive motor.

A pipe cutting tool having: a plurality of rollers; a clamping member moveable between an open position in which a pipe is insertable between the plurality of rollers and a clamping position in which the pipe is secured between the rollers; a cutting apparatus having first, second, and third cutting members configured to optionally sequentially engage the pipe when positioned between the plurality of rollers; a drive motor drivingly connected to at least one of the rollers; and an actuator operatively connected to the drive motor.

Provided is a cutting apparatus 10 including a workpiece fixing jig 2 that supports a workpiece 1, rotates by operation of rotary drive means 3, and rotates the workpiece 1 while fixing the workpiece 1; rotary drive means 3 for driving and rotating the workpiece fixing jig 2; support means 4a to 4c for supporting the workpiece 1 while rotating along with rotation of the workpiece fixing jig 2; cutter knives 5a and 5b that cut the rotating workpiece 1 at least at axially opposite ends of the workpiece 1; and slide moving means 6 for slidably moving the cutter knives. The cutting apparatus 10 having a simple apparatus configuration does not produce chips as a result of cutting with small variations in size and with high planarity of cut surfaces.

A cutting method and an apparatus are provided which enable a rim area or other part of a vitreous silica crucible to be cut off so as to leave a smooth cut surface without damaging the cut edge, etc. The apparatus for cutting the crucible comprises a disk-shaped cutting blade (10) disposed to be movable with respect to the crucible. Without rotating the crucible (20), the rotating cutting blade (10) is brought into contact with a surface of the crucible wall and pushed forward in the wall thickness direction to make a cut piercing the crucible wall. The cutting blade (10) is moved relatively to the crucible (20) in the circumferential direction of the crucible (20) while keeping the cutting blade in the state of piercing the wall. A rim area (25) of the crucible (20) is thus cut off.