Abstract:
A bearing assembly includes a first race having an arcuate configuration and a first set of bearing elements. The first set of bearing elements is arranged to dynamically contact the first race and recirculate within the bearing assembly in a first direction. A second race has an arcuate configuration and is removably secured to the first race. A second set of bearing elements is arranged to dynamically contact the second race and recirculate within the bearing assembly in a second direction opposite the first direction.
Abstract:
A rotating machining device includes a segmented support housing arranged to be mounted on a work piece and a segmented headstock mounted on the support housing and rotatable relative to the support housing about an axis. The rotating machining device also includes at least one bearing assembly disposed between the headstock and the support housing. The at least one bearing assembly includes a first race having a first set of bearing elements arranged to dynamically contact a first portion of the headstock and reciprocate within the bearing assembly in a first direction. The at least one bearing assembly also includes a second race having a second set of bearing elements arranged to dynamically contact a second portion of the headstock and recirculate within the bearing assembly in a second direction opposite the first direction so as to promote distribution of a load applied to the bearing assembly.
Abstract:
An interlocked assembly of a circular collar receivable in suspension within a sink drain fitting and an annular support slidably engaged to the collar cooperate to form a guide aligning the blade of a rotary cutting tool adjacent the seat of a retaining ring that holds the fitting in place. The sliding translation of the annular support within the collar is limited by a radially projecting ring to limit the penetration depth of the rotary saw blade mounted in the guided tool thus limiting the incidence of damage to the surrounding sink structure.
Abstract:
A machining device has a stationary member and a rotating member. A plurality of bearings on one of the members engages a surface of the other. At least one of the bearings is radially fixed, while the remainder of the bearings are radially adjustable. In another aspect of the invention, the bearings are rotatable on a first cylindrical portion of a mounting shaft that has a second cylindrical portion attachable to the machine. A radial undercut is provided around a flange between the first cylindrical portion and the second cylindrical portion.
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 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 brake disk turning device accommodates runout using a front flange coupled to an adapter connected to the brake hub, and a rear flange fixed to a chuck of a lathe for turning the disk. Spacing adjusters are at equal intervals around the flanges for individually adjusting a spacing between the flanges at each interval to tilt the front flange with respect to the rear flange to accommodate the runout. Each adjuster has a toothed wheel and a retractable pin movable by an actuator to intercept the wheel to incrementally rotate the wheel during rotation of the flanges. A pinion connected to the wheel is meshed with a gear. Annular grooves with varying depth are provided between the gear and the front flange with balls therein for adjusting the spacing between the gear and front flange (9) depending on their rotation position.
Abstract:
A material shaping machine has a frame, a work-piece holder and a tool holder, for rotatably holding a tool. A computer performs real-time tool path calculations based upon stored mathematical representations of a desired work-piece surface and stored mathematical representations of an actual tool geometry, by calculating a desired position of a tool cutting edge relative a measured position of the tool cutting edge and a measured position of the work-piece, and adjusting a distance between the desired tool cutting edge and the measured position of the tool cutting edge in a first direction, so that the tool cutting edge reaches the desired position. Manipulation means provide a relative movement of the work-piece and the tool cutting surface in a second direction and a third direction. The manipulation means are operated outside the computer control. Sensors determine the position of the work-piece relative the cutting surface of the tool and send the position data to the computer.
Abstract:
A twin-head beveling machine for high-precision machining on heads of pipes, comprising two mutually opposite pressers and machining heads with a rotating disk; the pressers are rigidly connected to each other by a central fixed shaft and the heads are mounted so that they can rotate and move axially individually on the central fixed shaft. The machining heads are subjected to the action of hydraulic or pneumatic motors and of axial movement elements, which are activated by a respective hydraulic or pneumatic actuator and produce the axial working advancement of the respective head.