A tool unit for performing a chamfering operation on a workpiece is disclosed. The tool unit includes a body, a plunger, at least one insert holder, and at least one cutter insert. The body includes a bore, and the plunger is movably positioned within the bore. The insert holder is coupled to the body and is in engagement with the plunger. The cutter insert is coupled to the at least one insert holder. The cutter insert includes a cutting edge adapted to be positioned at a cutting angle relative to the workpiece, and the cutting angle is varied relative to the workpiece upon a movement of the plunger within the bore.

An automatic movable machine configured such that: a vertical plate and a support plate are fixed, in a perpendicular direction to each other, to a semicircular chamfering angle adjusting plate fixed to a head of the movable chamfering machine; a moving body is provided at the vertical plate on the inside of the pipe or the lower side of the metal sheet, and equipped with an internal roller regulated by a spring contact with the inside of the pipe or the lower side of the metal sheet; the support plate has a fixing bolt; a fixing plate is provided to the support plate, and provided at the front of a gear box; and external rollers are provided at the front of the gear box, and allow the speed of the rotational force of a motor, to be reduced in the gear box and transmit the speed-reduced rotational force.

A self-adjusting tool for chamfering an end of a cylinder includes a plurality of legs. A distal segment of each of the legs extends in a forward direction of the tool and is placeable about the end of the cylinder. A central body has a rotatable shaft and a mechanism that is operable by rotation of the shaft about a shaft axis. The mechanism is operable to retract the legs inward in tandem toward the cylinder and to rotate the legs about the shaft axis when further retraction of the legs is blocked by contact with the cylinder. One or a plurality of chamfering blades are each attached to one of the legs. A cutting edge of each blade is oriented diagonally forward and inward.

An apparatus and method of using an apparatus for refacing a tubular connection is provided. In one example, the apparatus has a mandrel connectable to a threaded portion of a tubular connection and two face plates bearing cutters for refacing surfaces of the tubular connection. In this example, the cutting is controlled by an engaging nut moving along a threaded portion of a drive shaft, and the two face plates may be spaced apart at a fixed distance to maintain the distance between the torque-stop surface and the primary surface after refacing. Also, the apparatus uses a locking pin to assist in tightening or loosening the mandrel into place using the remainder of the apparatus. An air-oil system is provided to supply air and oil to the cutting surfaces as the apparatus refaces the shoulders of the connection. An exemplary pin refacer and an exemplary box refacer are both disclosed.

A pipe cutting apparatus (10), especially for cutting or machining a plastics, resin or soft-metallic pipe (20), comprises a frame (30a, 30b; 32a, 32b) for receiving the pipe (20) to be cut, and cutting means (102) rotatable by externally powered drive means (60) with respect to the pipe (20) to perform a cut, wherein the cutting means (102) comprises a cutting tool (102) carried on a pivotally mounted tool holder (100) and biased into cutting relationship with the outer surface of the pipe (20) by biasing means such as a coil spring (104). The tool holder (100) on which the cutting tool (102) is mounted preferably further comprises means (106) for limiting the maximum depth of a single given cut able to be performed in a single pass by the cutting tool (102) as it is rotated with respect to the pipe (20) held in the frame, as well as limiting means (108) for defining the maximum depth of a plurality of cuts able to be performed by that plurality of cuts of the cutting tool (102) as it is rotated through that plurality of cutting revolutions with respect to the pipe (20) held in the frame. Examples of pipe cutting or machining operations the apparatus may be used for include: complete cutting-through of the pipe wall, eg. by a transverse cut; partial cutting-through of an outer surface or wall of the pipe; stripping of one or more outer layers from the outer surface of the pipe, to allow the pipe to be joined to another by butt-fusion; removal of irregularities from the outer surface of the pipe, for providing a cut end of the pipe with a clean, smooth outer surface of substantially uniform diameter to allow the pipe to be joined to another by electro-fusion; bevelling, chamfering or other shaping of the edge(s) of a cut pipe end, mouth or lip.

The present invention relates to a portable pipe outer diameter-chamfering apparatus characterized in that a vertical fixing plate is fixed to the outside of the vertical plate, a horizontal fixing plate is fixed in an orthogonal direction to the tip of the vertical fixing plate, a rectangular link with one open side is coupled to move upward and downward along the vertical fixing plate, a pair of circumscribing rollers, each of the pair of circumscribing rollers being installed on either end portion of the rectangular link with one open side, respectively, the rectangular link with one open side moves up and down along the vertical fixing plate, a moving body is installed in the horizontal fixing plate, the moving body moves up and down, and an inscribing roller which is in close contact with an inside of the pipe is installed on the moving body.

An apparatus and method of using an apparatus for refacing a tubular connection is provided. In one example, the apparatus has a mandrel connectable to a threaded portion of a tubular connection and two face plates bearing cutters for refacing surfaces of the tubular connection. In this example, the cutting is controlled by an engaging nut moving along a threaded portion of a drive shaft, and the two face plates may be spaced apart at a fixed distance to maintain the distance between the torque-stop surface and the primary surface after refacing. Also, the apparatus uses a locking pin to assist in tightening or loosening the mandrel into place using the remainder of the apparatus. An air-oil system is provided to supply air and oil to the cutting surfaces as the apparatus refaces the shoulders of the connection. An exemplary pin refacer and an exemplary box refacer are both disclosed.

Drilling apparatus and method, the apparatus comprising: a first robot (10); a first member (30) (e.g. a pressure foot) and a drilling tool (38) both coupled to the first robot (10); a second robot (12); and a second member (52) coupled to the second robot (12); wherein the apparatus is arranged to press the members (30, 52) against opposite sides of a part to be drilled (2, 100) (e.g. an aircraft panel) so as to hold the part (2, 100) and prevent deflection of at least a portion of the part (2, 100); and the first member (30) and the drilling tool (38) are arranged such that the drilling tool (38) may drill into the portion of the part (2, 100) of which deflection is opposed from the side of the part (2, 100) pressed against by the first member (30). The robots (10, 12) may be robotic arms.

A rotating machining device for machining a work piece includes a support housing adapted for mounting on the work piece and a headstock rotatably mounted on the support housing about an axis. The headstock including an internal gear. A drive module is arranged to drive rotation of the headstock about the axis and at least one gear connection is formed between the internal gear and the drive module. The at least one gear connection is positioned radially inside of an outer diameter of the support housing to protect an operator from a pinch point associated with the at least one gear connection.

A self-adjusting tool for chamfering an end of a cylinder includes a plurality of legs. A distal segment of each of the legs extends in a forward direction of the tool and is placeable about the end of the cylinder. A central body has a rotatable shaft and a mechanism that is operable by rotation of the shaft about a shaft axis. The mechanism is operable to retract the legs inward in tandem toward the cylinder and to rotate the legs about the shaft axis when further retraction of the legs is blocked by contact with the cylinder. One or a plurality of chamfering blades are each attached to one of the legs. A cutting edge of each blade is oriented diagonally forward and inward.