Abstract:
A portable lathe machine (500) for machining a work piece includes a support housing (502) adapted for mounting on the work piece and a rotating head (504) rotatably mounted on the support housing (502) about an axis (526). A drive module (510) is arranged to drive rotation of the rotating head (504) about the axis (526). The rotating head (504) defines the internal gear (548) and at least one gear connection is formed between the internal gear (548) and the drive module (510). The at least one gear connection is radially positioned inside an outer diameter of the support housing (502) to protect an operator from a pinch point associated with the at least one gear connection.
Abstract:
A tool module for a machining apparatus including a rotatable portion. The tool module includes at least one adjustment clamp supported by the rotatable portion. A module base is supported by the at least one adjustment clamp and defines a linear movement track. A tool slide is configured to support a cutting tool and is movable along the linear movement track. The at least one adjustment clamp is movable from a release position to a locking position and vice versa, and in both the release position and the locking position the at least one adjustment clamp is connected to the rotatable portion. In the release position the at least one adjustment clamp permits the module base to translate relative thereto, and in the locking position the at least one adjustment clamp engages the module base to inhibit the module base from moving relative thereto.
Abstract:
A rotating machining device (100) includes a segmented support housing (102) arranged to be mounted on a work piece and a segmented headstock (104) mounted on the support housing (102) and rotatable relative to the support housing (102) about an axis (128). At least one bearing assembly (158) is disposed between the headstock (104) and the support housing (102). The at least one bearing assembly (158) includes a first race (162) having a first set of bearing elements (166) arranged to dynamically contact a first portion (133) of the headstock (104) and reciprocate within the bearing assembly (158) in a first direction. The at least one bearing assembly (158) also includes a second race (164) having a second set of bearing elements (168) arranged to dynamically contact a second portion (125) of the headstock (104) and recirculate within the bearing assembly (158) in a second direction opposite the first direction so as to promote distribution of a load applied to the bearing assembly (158).
Abstract:
Cutting assemblies are disclosed that include an entrance portion and a receiving portion, with the receiving portion defining a receiving opening configured to be axially aligned with an entrance opening of the entrance portion when mounted to the surface of a cutting apparatus. Cutting assemblies are also provided that include a material carriage configured to be borne by a cutting apparatus. Cutting assemblies that include a material receiving portion configured to be slidably mounted to a surface of a cutting apparatus are also disclosed. Cutting methods are also disclosed that can include rotating a piece of material around the materials longitudinal axis and delivering the material to a cutting tool while the longitudinal axis of the material is aligned substantially opposite the direction of rotation of the cutting tool.
Abstract:
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 the torque-stop surface and primary surface of the tubular connection. 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 in order to maintain the distance between the torque-stop surface and the primary surface after refacing. 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 connection. An exemplary pin refacer and an exemplary box refacer are both disclosed.
Abstract:
A tripper assembly is described for use with a clamshell lathe having a stationary ring (38) and a rotatable ring (40) including a tool module (44) for holding a tool bit. The tool module (44) has a starwheel (46) with a plurality of teeth coupled to a feed screw for moving a tool bit in a radial direction with respect to the rings as the starwheel rotates. The tripper assembly includes a bracket (14) affixed to the stationary ring (38) of the lathe, a radially extending shaft (16) mounted in the bracket, a pin holder (20) mounted on the shaft, and a radially extending pin held by the pin holder. Rotation of the shaft moves the pin along an arc to move the pin between an engaged position and a disengaged position with respect to the starwheel. When the pin is at the engaged position, upon each revolution of the starwheel, the pin engages a tooth on the starwheel to rotate the starwheel.
Abstract:
An apparatus (10) for cutting a pipe includes a housing with a central aperture (12) for holding the pipe in a fixed position. A rotatable collar (16) is mounted on the outer surface of the fixed housing, with a cutting head (14) attached to the collar (16). The cutting head (14) is configured to translate forward and backward such that the combination of the rotational movement of the collar and the translational movement of the cutting head is capable of performing complex cuts without ever moving the pipe. A number of different cutting tools (laser, plasma, etc.) may be attached to the cutting head, and a variety of different tasks may be performed including cutting completely through the entire pipe, inscribing on the pipe surface, forming through-holes along the pipe, and the like.
Abstract:
A swivel head assembly for a clamshell lathe is provided. The swivel head module includes an adjustable tool head assembly. The adjustable tool head assembly has a tool for machining a work piece, and is capable of being incrementally advanced in a radial direction against the work piece. The swivel head assembly further includes a means for positioning the metal working tool along an x-axis, y-axis, and z-axis. A tripper assembly is operatively coupled to the tool head assembly to incrementally urge the tool head against the work piece upon each revolution of the clamshell ring. The tripper assembly incorporates a solenoid for selectively incrementally advancing the tool against the work piece.