Abstract: An end prep tool with a pneumatically driven tool slide assembly comprises a mandrel mountable to the internal diameter of a tubular work piece. Mounted on the mandrel are a rotational head assembly and a rotatable housing that are longitudinally displaceable along the mandrel. The rotational head assembly carries either one or two tool feed assemblies thereon for orbital movement around the work piece. The tool slide assemblies are driven by a pneumatic motor to provide a true phonographic finish with no tripper marks.

Abstract: A CNC lathe with double-speed shifting feature in spindle axis comprises a frame, a screw rod pivotally disposed along a lengthwise spindle axis of the frame, a worktable assembly and a tool holder assembly; characterized in that the screw rod includes a positive thread section and a counter thread section for engaging two nuts respectively secured on the worktable assembly and the tool holder assembly; thereby when the screw rod is rotated by a servomotor, the tool holder assembly and worktable assembly are simultaneously shifted in opposite directions along the spindle axis for obtaining a relatively shifting speed at the double of conventional one, so that the non-cutting operation time of a CNC lathe is greatly reduced, and so that the overall machining speed and efficiency are improved.

Abstract: A lathe adapted to trim and true the circumference of a rotating cylindrical surface comprising an axially forward plate with a central aperture and a plurality of radially interior and radially exterior apertures, an axial rearward plate with a plurality of radially interior and radially exterior apertures; fixed cylindrical spacers fixedly coupling the forward and the rearward plates, a plurality of threaded cylindrical spindles rotatably supported with respect to the forward and rearward plates with a planetary gear secured with respect to each spindle, a rotatable advancement assembly formed with a rotatable plate and a forwardly facing cylindrical periphery and a tracking ring in meshing contact with the planetary gears whereby rotation of the rotatable plate with respect to the rearward plate will rotate the tracking ring to rotate the planetary gears and the threaded cylindrical spindles, a carriage having two parallel threaded bores in meshing relationship with the threads of spindles for axial moveme

Abstract: Apparatus for machining the ends of pipe, which has a clamping section insertable into a section of pipe for forcible engagement with the interior of the pipe in fixed coaxial alignment therewith and a cutting section which includes a cylindrical mast, attached to the clamping section for coaxial alignment therewith, and a cutting head assembly on which is carried one or more cutting tools. The cutting head assembly is mounted on the mast for rotation and axial movement relative thereto for moving cutting tools into and away from cutting engagement with an end of the pipe section. The apparatus cutting section mast is removably attached to the clamping section allowing removal and replacement of the clamping section.

Abstract: A rapid set-up end prep lathe for machining piping and piping components in the field comprises a mandrel mountable to the internal diameter of a tubular workpiece and with the ability to rapidly establish a concentric orientation of the mandrel with the workpiece. Mounted on the mandrel is an annular housing that is longitudinally displaceable along the mandrel. It supports a gear ring carrying either one or two tool feed assemblies thereon for orbital and radial movement of a cutting tool relative to the workpiece. The tool slide assemblies are adjustably mounted permitting the tool to travel at an angle between 0° and about 37° with respect to the surface of the gear ring. Ramps of adjustable slope affixed to the annular housing are coupled through a one-way ratchet clutch to permit variation of the feed rate of the tool slide.

Abstract: A portable single-point beveling tool includes a tool housing, an associated tool drive mechanism and a base member which is rotatably supported on the housing for rotary motion about a rotation axis and arranged to be rotated by the tool drive mechanism. The base member has a portion which extends in a generally radial direction with respect to the rotation axis. The base member carries a cutting tool holder assembly, which includes a cutting tool holder. The base member also carries a cutting tool feed assembly, which is arranged to simultaneously drive the cutting tool holder assembly in a linear radial direction and the cutting tool holder in a linear axial direction with respect to the rotation axis. Rotary motion of the base member actuates the cutting tool feed assembly to drive the cutting tool holder assembly and the cutting tool holder.

Abstract: A tool feed module for a portable lathe machine tool includes a tool block carrying a cutting tool driven by a feed screw incrementally advanced during a cutting procedure by an actuator arm contacting a striker device located on the tool housing. The actuator arm drives the feed screw through an actuator shaft and a one-way drive device permits the actuator arm to pivot in opposite directions while driving the feed screw in increments during pivotal motion in a single direction. To enable reverse rotation of the feed screw and withdrawal of the cutting tool to a starting position rapidly, the actuator shaft is connected to the one-way drive device through a releasable connection that permits rotation of the drive screw by the actuator shaft independently of the one-way drive device.

Abstract: Positioning engaging members (27) are provided between a base table (10) and a turret (11) which is indexed relative to the base table (10) by a driving force of an indexing/tool turning motor (32) so as to be engageable with or disengageable from each other. The positioning engaging members (27) engage with each other to prevent the turret (11) from turning. Further, the driving force of the indexing/tool turning motor (32) is transmitted or not transmitted to the turret (11) by clutch pieces (31). The driving force of the indexing/tool turning motor (32) is transmitted to a turning tool (14) mounted on tool mounting portions (12) of the turret (11) via a power transmission member. The positioning engaging members (27) engage with or disengage from each other by an engaging unit.

Abstract: A method is disclosed for imparting relative motion between a tool that is carried by a tool holder and a workpiece on a lathe. According to this method, a feed screw is provided, which has a first end and a second end and a threaded portion near the first end. A tool holder carrying a tool is fixed with respect to the second end of the feed screw, so that axial motion of the feed screw will be translated to the tool carried by the tool holder. A hollow drive tube is also provided, which has an internal diameter large enough to accommodate the feed screw and which is disposed to rotate about its long axis. The drive tube is mounted at a location that is fixed with respect to the workpiece, and a nut that is threaded to mate with the threaded portion of the feed screw is attached to one end of the drive tube. Apparatus for rotating the drive tube is attached thereto, and the second end of the feed screw is locked so that rotational motion thereof is inhibited.

Abstract: A tool turret for machine tools has a turret housing and a turret head rotatably mounted in the turret housing about a rotary axis and lockable in selected angular settings relative to the turret housing. A carriage supports the turret housing and guides movement of the turret housing relative to a machine tool support in a Y direction transverse to the rotary axis. A carriage guide is on the tool support for guiding movement of the carriage. A carrier plate is part of the carriage, and extends in a plane defined by the Y direction and an X direction or a Z direction.

Abstract: Lathes for working brake rotors and other components as desired. The lathes employ a pivoting carriage which mounts the tool for working, cutting, finishing or otherwise having a desired effect on the workpiece. Control of carriage positioning is accomplished preferably using a feedscrew or other desired linkage which is connected, directly or indirectly, to the carriage and to the frame of the lathe (other mechanisms or linkages may also be used). Such lathes may also employ a slide carriage for working brake drums, which carriage is preferably located on the side of the lathe opposite the pivoting carriage. The slide carriage may be easily removed and sold as a separate unit to allow a number of options for buyers.