Abstract: A resonant frequency dampened through-coolant machine tool for selective mounting to machining systems for precision vibration free machining and has an elongate tool body. An internal dampening chamber is defined within the machine tool body and contains a resonant frequency dampening mass that is moveable within the dampening chamber. Axial and diametrical tunable dampening devices support the dampening mass in spaced relation with internal walls of the dampening chamber. A tuning piston is moveable within the machine tool body and has a tuning flange that is disposed in contact with one of the axial tunable dampening devices. The tuning piston has a pair of oppositely angulated surfaces that are selectively engaged by angulated drive heads of adjustment screws that are supported by threaded openings of the tool body and are rotated to selectively drive the tuning piston forwardly or rearwardly for precise tuning activity.

Abstract: A vibration dampening through coolant tool holder for machining operations, has an internal chamber within which a vibration dampening mass member is supported by resilient buffer members. The vibration dampening mass member has inner and outer tubular members that define a particulate chamber therebetween. A quantity of dense particulate such as granular tungsten carbide is located within the particulate chamber, causing the vibration dampening mass member to have sufficient mass to dampen the resonate frequency of vibration of said tool holder during machining activity. A vibration adjusting piston, actuated by an adjustment mechanism is linearly moveable with the tool holder and has dampening adjustment engagement with the mass member.

Abstract: A vibration dampening through coolant tool holder, such as a boring bar, for machining operations, has an internal chamber within which a vibration dampening mass is supported at each axial end by resilient buffer members. A vibration adjusting piston is linearly moveable with the tool holder and has dampening adjustment engagement with the mass. A dampening adjustment mechanism causes linear movement of the piston and applies controlled force of the piston to the mass and has a micrometer type rotary adjustment member that imparts linear force to the piston. The linear piston adjustment can also have a worm gear drive mechanism for controlling linear piston movement.

Abstract: A coolant fluid supplying tool post is mounted to a machining system for machine controlled movement and has an internal coolant passage system, a coolant fluid inlet, a coolant fluid outlet and a first dove-tail mount. A multiple machine tool support block has a second dove-tail mount is in supported engagement with the first dove-tail mount. A plurality of machine tool receptacles are defined in the multiple machine tool support block and each is adapted for support of a machine tool therein. Tool retainer members are carried by the multiple machine tool support block for each of the machine tool receptacles and has retaining engagement with a machine tool located within a machine tool receptacle. Coolant passages within the multiple machine tool support block have a coolant supply inlet in fluid communication with the coolant fluid outlet of the coolant fluid supplying tool post.

Abstract: A coolant fluid supplying tool post is mounted to a machining system for machine controlled movement and has an internal coolant passage system, a coolant fluid inlet, a coolant fluid outlet and a first dove-tail mount. A multiple machine tool support block has a second dove-tail mount is in supported engagement with the first dove-tail mount. A plurality of machine tool receptacles are defined in the multiple machine tool support block and each is adapted for support of a machine tool therein. Tool retainer members are carried by the multiple machine tool support block for each of the machine tool receptacles and has retaining engagement with a machine tool located within a machine tool receptacle. Coolant passages within the multiple machine tool support block have a coolant supply inlet in fluid communication with the coolant fluid outlet of the coolant fluid supplying tool post.

Abstract: A quick-setting and release tool post mechanism provides for locking of tool holders to a tool post body and incorporates a gib drive member having angulated thread flanks that impart downward and lateral forces to one or more gibs to enhance the tool holder locking activity. The tool post and tool holder each have an internal coolant supply and distribution system for supplying coolant fluid during machining. The tool post has one or more thread flank actuated tapered gibs that are actuated by manually energized rotary motion of an externally threaded gib drive member to develop thread flank induced forces that achieve locking of tool holders at selected positions on dove-tail mounts and to achieve back-lash free quick release of the tool holders from the mounts.

Abstract: A boring bar has a shank having a cutter support head at one end. A flow passage extends to the cutter support head and intersects a transverse flow passage that is defined in part by a clamp screw passage of the head. A metal cutting insert is clamped to the cutter support head by a clamp that is secured by a clamp screw being threaded into the clamp screw passage. The clamp screw defines an internal or external passage that communicates with the internal coolant fluid passage and completes a coolant distribution circuit. The clamp defines an internal coolant fluid passage having a discharge opening located and oriented to direct a jet of coolant fluid onto the metal cutting insert immediately at the site of cutting engagement within the rotating workpiece. The cutter support head also has a passage and chip removal jet nozzle that orients a jet of coolant fluid adjacent the cutter insert for remove metal chips during machining.

Abstract: A boring bar has a shank having a cutter support head at one end. A flow passage extends longitudinally through the shank to the cutter support head and intersects a transverse flow passage that is defined in part by a clamp screw passage of the head. A metal cutting insert is clamped to the cutter support head by a clamp that is secured by a clamp screw being threaded into the clamp screw passage. The clamp member defines at least one coolant fluid flow passage having a discharge opening or openings each located and oriented to direct a jet of coolant fluid onto the metal cutting insert immediately at the site of cutting engagement within the rotating workpiece. The clamp screw defines an internal passage that communicates with the transverse coolant fluid flow passage and conducts coolant fluid onto the metal cutting insert.

Abstract: A boring bar has a shank having a cutter support head at one end. A flow passage extends longitudinally through the shank to the cutter support head and intersects a transverse flow passage that is defined in part by a clamp screw passage of the head. A metal cutting insert is clamped to the cutter support head by a clamp that is secured by a clamp screw being threaded into the clamp screw passage. The clamp member defines at least one coolant fluid flow passage having a discharge opening or openings each located and oriented to direct a jet of coolant fluid onto the metal cutting insert immediately at the site of cutting engagement within the rotating workpiece. The clamp screw defines an internal passage that communicates with the transverse coolant fluid flow passage and conducts coolant fluid onto the metal cutting insert.

Abstract: A quick-change tool post, having a rectangular tool post body with a bore there through defining an axis of rotation. The body defines a plurality of generally rectangular tool support faces and a plurality of laterally offset external dovetail connections receiving internal dovetail connections of overlapping tool support members. A post extends through the body and defines a pivot about which the body is rotatable. An indexing mechanism having locking and unlocking conditions permits unlocking of the post during a first increment of rotational locking handle movement and rotation of the post during a second increment of rotational movement of the handle in the same rotational direction.

Abstract: A modular knurling tool is provided having a tool shank defining a first dove-tail connector and having at least one adjustment drive recess. Any selected one of a number of different knurling heads are adjustably connected to the tool shank by a second dove-tail connector, such that with the tool shank mounted in the tool support of a metal working machine, the knurling head is linearly adjustable along an axis that is oriented in normal relation with the longitudinal axis of the tool shank and in normal relation with the axis of the rotating work piece. A threaded adjustment member is positioned with a circular thrust element thereof located in rotatable relation within the adjustment drive recess so that rotation of the threaded adjustment will impart linear adjustment movement to the knurling head relative to the tool shank.

Abstract: A bidirectional indexing turret mechanism for machine tools having a housing for mounting to a machine tool, with a spline being fixed to the housing. An indexing shaft is mounted for rotation within the housing and has a rotary turret support fixed thereto for supporting a turret having machining tools for machining a workpiece. The rotary turret support is a rotary spline having spline teeth positioned for registry with the teeth of the fixed spline. A locking spline is positioned about the indexing shaft and is movable to a locking position for locking engagement with the fixed and rotary splines and is movable to an unlocked position permitting rotation of said rotary turret support and the indexing shaft. A shaft driver having splined engagement with the indexing shaft is in positioning engagement with the locking spline and is movable linearly and rotatably by a roller driver supporting a plurality of drive rollers.

Abstract: A dove-tail end mill having a cutter shank with a milling head supporting a plurality of replaceable standard 60.degree. triangular cutter inserts. The cutter inserts are designed and oriented with respect to the cutter head to position cutter edges for generating the inclined undercut surface of a dove-tail slot. Simultaneously, the cutter configuration is designed to establish a clearance angle between the lower cutting edge of each of the cutters and the planar surface being generated by the cutter inserts. The milling head defines a plurality of cutter stations each having planar support surfaces for stabilization of the respective cutter inserts and cutter orientation shoulders for accurate positioning of each of the cutter inserts with respect to the cutting head. The cutting head supports each of the cutter inserts to define a cutting rake of about plus 15.degree. and axial rake of about plus 10.degree. and a radial rake of about minus 14.degree..

Abstract: A quick setting and release machine tool post having a body block structure forming a pair or partial dove tail tool mounts externally thereof. The body block also forms a pair of expander receptacles each receiving a dove tail expander element in movable assembly therewith. A rotary actuator located within an actuator receptacle defined by the body block forms oppositely directed intersecting eccentric cam surfaces that are disposed for driving engagement with respective dove tail expander elements depending upon the direction of rotation of the actuator element. The dove tail expander elements are selectively linearly movable to establish tight locking engagement within the dove tail receptacles of tool holders and are retractable to release the tool holders for replacement or repositioning. The design and operational characteristics of the tool post mechanism minimizes wear of component parts and promotes long service life.

Abstract: A selectively adjustable tool post for holding a plurality of tools for rapid and selective positioning of any one of the tools in operative position with respect to a work piece on a machine tool. The tool post is formed with base means preferably formed as a plate adapted for securement at a selective location on a bed portion of the machine tool for any given set-up of the machine tool with respect to the shaping of any particular work piece. A body block is rotatably mounted over the base means, and interlocking means in the form of spline teeth are formed on the surfaces between the body block and base plate.