Abstract: An overload detection mechanism for a robot is disclosed, wherein first and second members are relatively urged together by an urging means to urge the axis of the second member toward the Z axis of the first member. The second member is guided in any movements departing from coaxial alignment, and the first member is supported near the end of a robot arm. A tool mount or workpiece mount is connected to the second member. An electrical device is mounted on one of the members, and a device actuator on the other of the members, with the reaction means acting between the members to relatively move the members upon tilting from an X-Y plane normal to the Z axis, or axial thrust applied by the tool mount to the second member. In this manner, an overload of a tool in the tool mount establishes relative movement between the first and second members, so that the electrical device is actuated to change an electrical condition thereof and can be connected to stop movement of the robot.

Abstract: A locking tool holder is disclosed which has a socket adapted to receive a tool which has a lateral recess. The tool holder contains a lock pin which is slidable in a first aperture transverse to the tool socket, and this lock pin has a wedge portion on the inboard end thereof to engage a tapered lateral recess on the tool. A cam bar is slidable transversely to the lock pin in another aperture in the tool holder, and has first and second cam surfaces to cooperate with first and second cam followers on the lock pin. The cam bar may be moved manually or by a spring into a first locked position, whereat the second cam engages the second cam follower on the lock pin to force the lock pin wedge portion against the lateral recess in the tool. When the cam bar is moved into the second position, the first cam surface engages the first cam follower on the lock pin to withdraw the lock pin from the tool so that the tool may be removed from the tool socket.

Abstract: A quick-connect and quick-disconnect mechanism includes a male member which may be received in a female socket member. Cam means is journaled in an eccentric cam follower surface in the socket and is capable of rotation about a second axis displaced from the axis of the socket. A locking surface on the cam means faces in a longitudinal direction opposite the entrance of the socket and opposite that of a lockable abutment surface on the male member. An aperture in the cam means is sufficiently large to accommodate the entrance of the lockable abutment surface on the male member. The cam means is rotatable within the cam follower surface to move the cam locking surface with a radially inward component and a component of movement in a longitudinal direction away from the entrance of the socket to engage the lockable abutment surface to lock the male member in the socket. The cam means may also have an expelling surface to aid in expelling the male member from the socket.

Abstract: An apparatus and method is provided for an air bearing support of a rotatable tooling bar, such as a boring bar. One or two mandrels may be provided for this tooling bar to form a complete mandrel assembly with the tooling bar. An air pressure expansible collet is provided on each mandrel so that each may be clamped within a clamping aperture, such as an aperture on the workpiece itself. Air under pressure is supplied to the two mandrels simultaneously to accomplish, first, an air bearing centering of each mandrel around the tooling bar as a guide; second, an expansion of the collet on each mandrel for clamping of each mandrel within the clamping apertures; and, third, provision of an air bearing support and centering of the tooling bar within the two mandrels during machining for precise machining of the workpiece by the continued air supply.

Abstract: An adjustable insert cartridge is described in which a toolholder shank is threadedly engaged in a threaded adjusting sleeve having a flange with a rearwardly facing face. The rearwardly facing face is in rotatable sliding engagement with a forwardly facing face on a mounting collar which is attached to a boring bar. The rearwardly and forwardly facing faces are held in abutment by a spring which is compressed between a rear face of the mounting collar and an adjusting ring threadedly engaged on the adjusting sleeve.

Abstract: A tap holder characterized in that its cylindrical shank is axially movably and non-rotatably keyed within a tubular socket of a housing by keys having rolling engagement with complemental axially extending V grooves in the shank and in drive blocks disposed in axially extending slots of the socket, and engaged within a retainer sleeve which locates the drive blocks and keys coaxially of the shank for uniform distribution of torque loads to prevent high pressure sliding contact of the shank with the socket under torque load during relative axial movement of the housing and tap holder. The shank is additionally spring-connected to the socket by two coil springs both of which yieldably oppose relative axial movement in one direction and but one of which yieldably opposes relative axial movement in the opposite direction.

Abstract: A spring actuated chuck wherein a slotted flange, tapered shank tool adapter is clamped to a holder by a spring actuated clamping and ejecting nut assembly which includes a nut having threaded engagement with the holder, a clamping ring rotatably adjustably secured to the nut having clamping lugs to engage the flange of the adapter to clamp the adapter to the holder, an ejector axially retained in the nut and non-rotatably axially slidably engaged with the holder to engage the flange of the adapter thus to release the adapter from the holder, and a latch member extending axially from the holder and engaged with the clamping ring operative upon movement by the flange of the adapter to release the nut assembly for spring actuated clamping movement. Release of the adapter is effected by rotation of the nut in the opposite direction against spring pressure for engagement of the ejector with the flange of the adapter and for re-engagement of the latch member with the clamping ring.

Abstract: A tool presetting fixture is disclosed for use with cross-slide type tool holders which are usable on a multiple spindle automatic machine tool. The tool holder has a tool holding pocket to hold a cross-slide type tool with a tool tip. The fixture has a base with a first gage surface mounted for movement parallel to the base to gage the spindle centerline height of a tool tip in the tool holding pocket. The fixture also has a rear wall on the base which has a second gage surface perpendicular to the base. Gage means is provided to gage the distance from this second gage surface to the tool tip and screws are provided in the tool holder and acting on this second gage surface to obtain a gaged distance of the tool tip from a reference surface of the machine tool to establish a predetermined longitudinal dimension on the workpiece.

Abstract: A reversible driver for a threading tool, such as a tap or die, is disclosed. The driver has rotary input and output members with a forward clutch connected therebetween and a reverse clutch connected through reverse gearing between the input and the output members. Each clutch has drive and driven clutch elements and a first spring urges both forward and reverse clutches toward engagement. A second spring is stronger than the first spring and urges the forward clutch toward engagement so that a tap rotated by the output member will tap a hole in a workpiece until the forward clutch is released. Each clutch utilizes a plurality of substantially hemispherical projections engaging longitudinal abutments as a form of dog clutch. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.

Abstract: A tool presetting device for longitudinally presetting an end cutting tool in a tool holder for use in a single or multiple spindle automatic bar machine characterized in that the device has a tool holder support which non-rotatably holds the tool holder in a predetermined axial position for axial adjustment of the tool to engage a preset micrometer which is clamped in one end of a micrometer holder. The other end of the micrometer holder is frictionally swingably retained in a selected groove of a grooved bar which is parallel to the tool holder and tool for swinging movement of the micrometer in a plane perpendicular to the tool holder and tool axis from a position laterally clearing the tool holder and tool for axial insertion and removal of the tool holder and tool from the tool holder support to a position whereat the end of the tool may be axially advanced with respect to the tool holder for engagement with the micrometer.

Abstract: A chuck is disclosed wherein the jaws of the chuck may be locked by tapered lock means so that if actuating force on the chucking and unchucking actuator is lost during rotation of the chuck, the external diameter of the workpiece will still be gripped by the jaws. A first linkage in the chuck body interconnects an axially movable actuator with the radially movable master jaws. This may be a bell crank lever or an interconnecting wedge. First lost motion means is provided in this first linkage. A second linkage is provided from the actuator to the tapered lock means and includes a second lost motion means which is smaller than the first lost motion means. A spring urges the tapered lock means into a locked position when the workpiece is chucked and then if force is lost on the actuator, this tapered lock means acting on the master jaws prevents release of the workpiece.

Abstract: A spade drill characterized in that the slotted blade clamping end of the holder has oppositely beveled end surfaces which are perpendicular to the respective side faces of the blade and which are at an angle less than the angle of the respective cutting edges of the blade to define convergent passages of right angle cross section for funneling or tracking chips to diametrically opposite obtuse angle cross section longitudinal grooves in the holder.

Abstract: A precision heavy duty indexer characterized in that the indexing member thereof is positively locked to the indexer housing in desired precise axial, radial and angular indexed position by interengaged gear means of said indexing member and said housing, and is unlocked for indexing movement by disengaging said gear means, the gear means of said housing being carried by the outer peripheral portion of a laterally flexible pneumatic or hydraulically-actuated diaphragm having its inner peripheral portion fixed to the housing.

Abstract: An adjustable floating reamer characterized by its relatively great length and small diameter embodying a closure cap for the diametrically slotted end of a shank member which has a long and thin tubular portion which closely embraces and supports the slotted end of the shank member and which has a closed end in abutting engagement with the slotted end of the shank member to define therewith a rectangular slot in which overlapping reamer blades are slidably supported for radial adjustment and for radial floating movement about a pivot which is spaced a great distance from the blades so that no binding action occurs during the floating movement of the blades during use of the reamer.

Abstract: A floating tool holder for a reamer or like tool characterized in that a shank member with respect to which a tool drive member has a floating drive connection has a centralizing pin fixed therewithin which provides a spring centering device to yieldably position said drive member coaxially of said shank member, and which axially retains said drive member for lateral floating movement without axial play.

Abstract: A spade drill characterized in that the slotted blade clamping end of the holder has non-symmetrical oppositely disposed blade clamping faces, each of which extends close to the cutting end and cutting diameter of the blade on the side of the blade opposite to the side containing one cutting edge thus to provide firm support for said one cutting edge and is beveled at its end to provide a wide divergent passage for free passage of chips from the other cutting edge to the longitudinal obtuse angle groove of the holder which intersects such divergent passage at its wide end.

Abstract: A precision heavy duty indexer characterized in that the indexing member is hydraulically actuated to a locking position whereat it is locked to the indexer housing in desired precise indexed position without circumferential or radial play and without transmission of torque load to the indexer drive means or without transmission of radial load to the indexing member-housing bearings; and is hydraulically actuated to unlocking position whereat it is released from said housing for indexing movement and whereat it is engaged by said drive means operative to index the indexing member to the next indexed position. The indexer herein is further characterized in that the indexer drive means comprises a hydraulic motor driven worm which meshes with a worm wheel having driving engagement with said indexing member, said worm having a sensor-counter thereon to de-energize said hydraulic motor when the indexing member has been indexed through a predetermined angle from one indexed position to the next.