Bishop Steering Pty Limited

Other

A.e. Bishop Associates Pty.

Bishop & Associates, A. E.

David William Scott

Arthur E Bishop

Klaus J Roeske

Apparatuses and methods are implemented for machining a longitudinally extending slot in a bore of a component. The component is gripped in a gripping device of a workholding device. A cutting operation is performed in order to cut the slot in the bore by a cutting tool. The cutting operation forms burred slot edges. The edges are further machined by inserting a deburring device into the bore. Relative angular reciprocation for a limited angle is imparted between the deburring device and the component.

Method of manufacturing slotted component

A machine for machining slots within a bore of a sleeve includes a work holding device, and at least one cutting tool mounted on a cutting spindle. An axis of the cutting spindle is offset from and at substantially right angles to the axis of the sleeve. A device supports the cutting spindle for angular reciprocation to effect cutting strokes of the cutting tool relative to the surface of the bore.

Slotted component and method of manufacture thereof

The present invention is a one piece sleeve for a rotary valve, the sleeve comprising an array of communication slots formed in the bore of the sleeve, characterized in that at least a portion of the floor of one of said slots is convex. Figure depicts sleeve (,) with arcuate slot (,) which has a convex floor and is open ended at both axial extremities of surface (,) of bore (,) of sleeve (,). This slot may preferably be used as a return slot on the sleeve.

A machine for machining blind-ended slots longitudinally disposed within the bore of a sleeve (1) held in a chuck (4) in a work holding spindle (5) indexable about a rotational axis, a reciprocable cutting tool (2) mounted on a cutting spindle (12) the axis of which is offset from and at right angles to the rotational axis of the work holding spindle (5) in which the cutting tool (2) executes a succession of progressively deeper cutting and subsequent return strokes so that a number of blind-ended slots are machined in the sleeve (1) characterized in the provision of a slidable support (6) for the work holding spindle (5) to slide the work holding spindle (5) axially relative to the cutting spindle (12) a distance such that the cutting tool is radially and axially clear of the bore when all slots are machined, cutting strokes of the cutter being discontinued.

Slotting machines

A rotary slot cutting tool having a flat sided disc shaped body with a central bore, a plurality of apertures spaced about the periphery of the body each aperture having in it a cutting insert held in position by the shape of the aperture against radial movement, each aperture being shaped in such a manner that on the application of a force acting radially outwards on the circumference on the bore of the body, faces of the aperture are caused to spread apart to permit removal and replacement of the inserts in an axial direction. The invention further provides an insert for use in rotary and other slot cutting tools.

Rotary slot cutting tools and insert clamping method

An indexing and transporting mechanism having a plurality of work-holding spindles spaced around a carousel, the carousel being journaled on a machine frame provided with work-performing stations and being indexable to carry the spindles sequentially from station to station, the work-holding spindles being arranged to be indexed through one complete revolution at some stations and not at others by a work-holding spindle orienting and indexing mechanism which consists of a track carried by the machine frame concentric with the carousel journals, projections extending from the work-holding spindles which engage the track to prevent rotation of the work-holding spindles relative to the carousel over part of a revolution of the carousel, the track being interrupted at the stations where indexing occurs, each interrupted portion of the track being mounted on indexable spindles carried by the machine frame, each interrupted portion of the track being arranged to be indexed through one complete revolution while the work-holding spindle is at the station.

Indexing and transporting mechanism

A die for forming a Y-form rack portion of a steering rack bar from a blank by forging in which the die has at least three forming elements (44, 47, 48) relatively movable on application of forging pressure to the die to converge on a blank therein, a first of the forming elements (44) having in its cavities the shape of which corresponds to the shapes of the teeth to be formed, second and third forming elements (47, 48) having forming faces to form longitudinal guide faces (4, 5) on the Y-form rack portion on the side thereof opposite the teeth (8). The three forming elements (44, 47, 48) are shaped and arranged to move together to converge on the blank to transform it into the final form in such a manner as to inhibit escape of the material of the blank between the first and second or first and third forming elements up to substantially the last instant of closure of the die. It is preferred to provide a fourth forming element (30) between the second and third forming elements which serves to guide their movement and to control the shape of a surface of the rack portion (14) lying between the longitudinal guide faces (4, 5) and it is further preferred to impart to the second (47) and third (48) forming elements a rolling motion as they converge on the blank. The die is preferably constructed to be used in a single direction impact press. A method of making a steering rack bar having a Y-form rack portion and a cylindrical portion from a blank by forging is provided in which an accurately shaped and substantially cylindrical blank is first produced and the cylindrical portion of the blank is held while the Y-form rack portion is formed in a die of the configuration described above.

Growing community of inventors

Ruse, Australia

David William Scott