Abstract: A linear blind broaching machine (10) includes a base (22), a broaching ram assembly (24), a linear tool slide (26) supported on the base by linear antifriction bearings (90) and a support block (92) mounted between the base and the linear tool slide below a broaching ram of the broaching ram assembly to provide support to the linear tool slide during blind broaching. The linear tool slide has an elongated construction including an elongated positioning block (114) against which blind broaches are laterally positioned, and an electric servomotor (108) drives the linear tool slide (26) to provide indexing thereof between broaching movements of the broaching ram. A roller screw drive (54) driven by an electric servomotor (56) drives a broaching ram (44) supported by linear antifriction bearings 46.

Abstract: A circulating type milling apparatus for milling a lock core keyway includes a frame with a rotating disc that is intermittently rotated through a pre-determined angle. Lock core seats are equidistantly provided on the rotating disc. A milling disc is mounted to a top plate of the frame and includes cutters, ejecting plate, and detectors mounted thereon. The cutters are lowered to mill a keyway in each lock core. When the cutters are further moved downward and thus disengaged from the lock cores, the rotating disc is rotated by a distance that is equal to a half distance between two adjacent lock core seats such that each lock core seat is in a positioning in alignment with an associated detector yet not in alignment with an associated cutter. When the milling disc is moved upward, the detector checks whether the milled keyway of the lock core meets the required standard. The ejecting plate ejects the finished milled lock core, and a new lock core is fed by a lock core supplying device.

Abstract: A progressive broaching apparatus comprising a base, an index table mounted on the base and defining a plurality of circumferentially spaced work stations, first and second columns mounted on and independently upstanding from the base, and first and second rams mounted on the first and second columns in overlying relation to respective spaced portions of the index table and operative to coact with the work stations in response to indexing movement of the work table to progressively transform an unfinished workpiece into a finished workpiece. A track is mounted on one of the columns to define a linear path extending between the columns in overlying relation to the index table and a trolley is mounted for movement on the track to facilitate the delivery of unfinished workpieces to the work stations and the removal of finished workpieces from the work stations.

Abstract: Apparatus for progressive blind broaching has an indexing table which carries a load station, a unload station and several tool stations. Broaches are mounted on the table at the tool stations. Rams on opposite sides of the table move workpieces up and down to be broached between intermittent indexing of the table. The load station has a workpiece holder to deliver unbroached workpieces to the rams. The unload station has a workpiece holder to receive broached workpieces from the rams. A transfer mechanism moves workpieces from a exchange depot at the rear of the table to the load station and moves workpieces from the unload station to the exchange depot. This transfer mechanism moves across the top of the table and does not occupy or obstruct any space along the sides or front of the table.

Abstract: A blind spline broaching machine for machining splines as well as sprockets, keyways, gears, cams and contours on workpieces, such as shafts. The blind spline broaching machine of the preferred embodiment has dual rams reciprocable relative to a rotary dial. The rams hold a corresponding pair of workpieces, while the rotary dial supports one or more broaching tools. The rotary dial is rotatable to index the workpieces to and from the rams. The blind spline broaching machine also incorporates a part moving unit on its periphery, which enables the use of a single loading/unloading station at which workpieces are alternately loaded onto and unloaded from the rotary table. Because the workpieces are loaded and unloaded from the same location on the periphery of the blind spline broaching machine, the side of the blind spline broaching machine opposite the loading/unloading station remains open to permit ready access to the tooling and the interior structure of the blind spline broaching machine.

Abstract: A method and apparatus for progressive machining of blind spline workpieces which includes step-by-step moving of work holding stations on an indexing table with loading and unloading stations located adjacent the table between work stations. Axially in line with the work stations between indexes are multiple tool rams hydraulically powered to drive a broaching tool over or into workpieces to achieve progressive broaching as the work is indexed. The rams can be simultaneously activated or sequentially activated depending on the capacity of the hydraulic system.

Abstract: A compound shuttle for a broaching machine having a pair of spaced parallel broach trains carried on a common slide reciprocable in forward and reverse passes past a work-piece mounted on a compound shuttle for positioning the work-piece into the path of a broach train during a forward pass, away from the broach train during reverse passes and moving the work-piece from axial alignment with one broach train into axial alignment with the other broach train upon completion of a forward pass.

Abstract: Two vertically movable carriages are alternately reciprocated. Each carriage holds two broaches positioned at opposite sides of the ways that guide the carriage. In one embodiment workpieces are moved from a magazine between the carriages alternately to work stations beside each carriage. In another embodiment the workpieces are moved between the two broaches in a series of three steps, the first broach acting on a given workpiece during a dwell before the first step and the second broach acting on that workpiece during a dwell after the third step. In yet another embodiment the workpieces are held by a chuck which, between successive broaching strokes, rotates the workpiece about an axis normal to the broaching strokes.