Abstract: A tool holding member is coupled to a driving or spindle member by a lug-and-slot universal type coupling member. The three members are held against axial separation by a pair of resiliently yieldable retaining rings which coact with the coupling member to allow the tool holding member to float radially relative to the spindle member. Means are provided for locking tools of various diameters in the tool holding member while providing a positive drive between the holding member and the tool.

Abstract: An improved chuck collet in which the elements of the collet, namely the jaw segments, the mounting base, and the interconnecting flexible members, are separate elements thus permitting a selection of materials for the elements to give optimum operating characteristics to the assembly at economical costs.

Abstract: A tap holder adapted for attachment to the main spindle of machine tool to cut internal threads in a workpiece, the tap holder including a floating mechanism by which the tap holding spindle is smoothly moved in the axial direction, the floating mechanism being featured by a single coil spring compressible in association with the axial movement of the tap holding spindle, and by its feasibility that a possible error occurring between the lead of the tap and the feed of the main spindle of the machine tool is automatically corrected.

Abstract: A toolholder for a rotary tool has a driving part adapted to be coupled to a machine spindle and a driven part in which a cutting tool may be mounted along a tool axis. The driving part and the driven part are coupled to permit pivotal movement and lateral movement perpendicular to the tool axis by a joint mechanism. This joint mechanism includes a substantially spherically shaped recess in which a substantially spherically shaped body is mounted for pivotal movement to all sides.

Abstract: A collet chuck assembly used for the attachment of a tap to the spindle of a tapping machine is provided. A bore for insertion of the base end of the tap is formed in the lower portion of a cylindrical portion, and at least one O-ring is mounted on the inner wall of the bore such that it is open to view on the inner peripheral face thereof. With the O-ring, the tap is held in place so as to prevent it from slipping down, and is supported somewhat floatingly within the bore in the diametrical direction. The cylindrical portion is provided therein with a pair of locking faces for locking the prismatic portion of the tap in place so as to inhibit any turning thereof and with a pair of steps or a set screw for controlling the amount of insertion of the tap thereinto.

Abstract: A tool connecting mechanism comprising two connecting members mutually engageable by movement of one member relative to the other along and about an axis. The members have respective support elements constituted as a kinematic support whereby, when engaged, the members are supported one on the other against relative displacement transversely to or about said axis.

Abstract: An adjustable tool holder for securing a drill or like tool to the turret of a machine tool includes an axially extending body member, a tool receiving member positioned alongside the body member, and a radially contractible clamping member encircling both the body and tool receiving members. When the clamping member is contracted, the contours of its circular interior cooperate with the contours of the body and tool receiving members to result in an axial positioning of the members.

Abstract: A floating tool holder including a cylindrical shank having a recess in one end thereof, floating structure including in different modifications an outer race or a torque washer and a tool receiver positioned within the recess and held in radially spaced relation to the recess walls by resilient O-rings whereby radial translation of the tool receiver with respect to the shank and pivotal movement of one end of the tool receiver within and relative to the shank are permitted, tool adapter structure received within the tool receiver, and means for releasably securing the tool adapter structure to the tool receiver.In another modification, the floating tool holder includes telescopic, resiliently biased compression structure received over the shank thereof. The floating tool holder may be further modified by a quick-release coupling for securing a tool adapter to the tool receiver portion of the floating structure.

Abstract: A hub is disclosed for mounting the spindle of a rotary tool, particularly a grinding or polishing wheel for ophthalmic lenses. The hub comprises a cylindrical bore and a plurality of radial centering arms arranged around the bore with their free ends lying in a common circle concentric with the axis of the bore. The centering arms each have a hinge or pivot which may be formed by a portion of reduced section at their bases. The pivot or hinge axes of the centering arms are tangent to another common circle concentric with the bore. Each of the centering arms is of elastically deformable construction fixed, or formed in one piece, with the rest of the hub. The hub is divided by a radial groove into a rigid, one-piece part and a deformable flange formed by the centering arms. A tightening ring with a preferably planar thrust or engagement face is adapted to apply an axial force against the centering arms so that they come into retaining engagement with the spindle.

Abstract: An improved hub-locking device for conveyor pulleys including a spherically shaped collet having a centrally located bore for receiving a shaft, an axially aligned slot extending through one side thereof permitting compression of the collet on the shaft, and a plurality of radially extending lugs, a hub attached to the end of the pulley and having an axially aligned tapered aperture for partially receiving the collet with the shaft therein and a plurality of radially extending recesses for receiving the collet lugs, a clamping ring having a tapered aperture for partially fitting over the collet, and a plurality of bolts for passing through holes in the clamping ring, for threading into the hub and for drawing the clamping ring toward the hub compressing the collet therebetween with the lugs within the recesses, and causing the collet to compress and engage the shaft, the hub and the clamping ring.

Abstract: A work driver chuck having face and actuator plates interconnected by the pivot shafts of work holding cam jaws carried by and journaled for rotative movement in the face plate. Although normally centered on the rotational axis of the chuck, the assembly of plates and jaws is released for limited universal free floating movement during the actual work clamping operation to compensate for eccentricity of or surface irregularities in the workpiece. The actuator plate is slidable relative to the face plate and is operative as it moves to turn the jaws angularly into or out of engagement with the work.

Abstract: The cutting head and shank of a floating reamer are connected for joint rotation about the shank axis and limited radial movement of the head on the shank by a reduced axial end portion of the shank being spacedly enveloped by an annular axial flange on the head and fastened to the flange by a pin diametrically passing through a bore in the end portion of the shank which is lined with a tubular ball bearing. The clearance between the flange and the end portion of the shank defines the available radial head movement.

Abstract: An improved hub-locking device for conveyor pulleys including a spherically shaped collet having a centrally located bore for receiving a shaft and having an axially aligned slot extending through one side thereof permitting compression of the collet on the shaft, a hub attached to the end of the pulley and having an axially aligned tapered aperture for partially receiving the collet with the shaft therein, a clamping ring having a tapered aperture for partially fitting over the collet and a plurality of bolts for passing through holes in the clamping ring, for threading into the hub and for drawing the clamping ring toward the hub compressing the collet therebetween, causing the collet to compress and engage the shaft, the hub and the clamping ring.

Abstract: A floating tool holder including a cylindrical shank having a recess in one end thereof, floating structure including in different modifications an outer race or a torque washer and a tool receiver positioned within the recess and held in radially spaced relation to the recess walls by resilient O-rings whereby radial translation of the tool receiver with respect to the shank and pivotal movement of one end of the tool receiver within and relative to the shank are permitted, tool adapter structure received within the tool receiver, and means for releasably securing the tool adapter structure to the tool receiver.In another modification, the floating tool holder includes telescopic, resiliently biased compression structure received over the shank thereof. The floating tool holder may be further modified by a quick-release coupling for securing a tool adapter to the tool receiver portion of the floating structure.

Abstract: A drill chuck including a main body part having jaws slidably mounted for converging movement in respective guides. A nut member is rotatably mounted on said main body part and has screwthreaded engagement with the jaws. A cylindrical sleeve is connected at one end to the nut member and at its other end surrounds a portion of a further body part. The further body part, which is provided with mounting means for connecting the chuck to a power tool driving spindle, has an initial degree of co-axial alignment with the main body part but a self-centering action is allowed when drilling.

Abstract: A Floating Tool Holder includes a shank having an annular sleeve secured to one end thereof, there being a tool chuck assembly retained between the end of the shank and a flange on the sleeve, driver means for transmitting rotary motion from the shank to the tool chuck assembly, there being a pair of annular bearings which engage the tool chuck assembly and enable slight relative radial movement, the bearings having flat surfaces which constitute a thermal diffusion of a metal boride, such as di-iron boride. There is a seal between the tool chuck assembly and the sleeve, and centering means acting between the shank and the tool chuck assembly and constructed to enable the conducting of a coolant through the shank into the tool chuck assembly, certain components being further constructed to enable length of the device to be minimized. The tool chuck assembly has a deep hole receptive of a substantial portion of a tool.

Abstract: A square hole drill having a cutterhead configuration whose outline is in the form of a Reuleaux triangle and which also has a planetary gear drive. Two counter revolving motions are present in the drill at the same time. One is the pure rotary motion of the drill's cutterhead about its own shaft. The other is the circular motion of the cutterhead as a unit about a center line due to its eccentric mounting and drive. To achieve the opposite rotation of the unit as a whole compared to the rotation of the cutterhead about its own axis, a combined meshing planet gear and ring gear are used. The planet gear is directly connected to the cutterhead by a shaft rigidly attached to the gear's front side. At the rear side of the planet gear is the eccentrically mounted drive shaft. Surrounding the external teeth of the planet gear is a larger stationary ring gear with internal teeth to continuously engage the planet gear's teeth.

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: This invention is an apparatus to provide for a tap driver system that maintains alignment of a tap at the start of engagement and permits a limited amount of linear movement by providing a tension spring mounting system to connect the tap holder assembly and the tap assembly.

Abstract: A reamer held in its required non-rotative condition for effective reaming by a rearwardly disposed key and key way construction, and wherein an elastomeric ring in encircling relation about the reamer maintains, without adverse effect on the holding function of the key and key way, the key in a clearance position within its cooperating key way, to thereby permit adjusting movements in the reamer to correct for misalignment between the reamer and the drilled hole to be reamed.

Abstract: A collet chuck which can be centered relative to an axis of the workpiece to be machined and suitable for machine tools in general and in particular machine tools having a number of successive positions. An inner prehensile member is capable of gripping the workpiece, and an intermediate member coaxial to the first has a conical seating which slides axially causing the prehensile member to close on the workpiece to be machined. An outer casing is rigidly attached to the prehensile member by means of a pin, and an outer ring is fitted with radial play around the periphery of outer casing. Spring members of variable tension compress the outer casing and outer ring against each other to lock them together by friction, and pusher means operable axially by a thrust member unlock the outer casing and the outer ring.

Abstract: A drill chuck having converging slidable jaws which are extendible and retractible relative to the body of the chuck by means of a key operable bevel gear part and an associated nut rotatable relative to the body, together with a driving component for the chuck for detachably mounting the chuck to the spindle of a power tool, and further provided with means for producing a self-centering action between the body part and the driving component. Various modifications of the components of the chuck, particularly the nut, bevel gear part, driving component and the self-centering means are also disclosed.

Abstract: A combination extension and compression tool holder having a cylindrical outer housing adapted to be inserted into a chuck of a rotary drive machine. A tool holding rod is axially slidably mounted in a cylindrical recess formed in the housing for rotation about its axis of elongation. Two opposing helical springs are disposed within the cylindrical recess and bias the tool holding rod towards an intermediate position within the cylindrical recess. During the feed-in of the machine chuck during a deburring operation, one of the helical springs can be compressed to permit the deburring tool to be retracted when the deburring tool engages an unfinished hole resulting from drill breakage to thereby prevent the deburring tool from being forced into the unfinished hole and thereby broken. During the deburring operation of a normally formed hole, the compression spring will permit the deburring tool to dwell at the opening of the hole for a better deburring operation.

Abstract: A compression tool holder for use with deburring tools or the like, the tool holder having a cylindrical outer housing adapted to be inserted into a chuck of a rotary drive machine. A tool holding rod is axially slidably mounted in a cylindrical recess formed in the tool holder. A spring loaded piston is mounted behind the rod and urges the rod to its extended position. A cap member, however, defines the limit of the extended position for the rod. The rod has an outside diameter somewhat smaller than the inside diameter of the cylindrical recess in the tool holder so that the rod may compensate for misalignment by pivoting relative to the housing within the cylindrical bore, utilizing the cap member as the fulcrum point for its pivot. The end surface of the piston coacts with the end surface of the tool holding rod so as to return the tool holding rod to a central aligned position when misalignment compensation is not required.

Abstract: An adjustable tension and/or compression tap holder includes a shank adapted for rotative drive and longitudinal feed and mounting a drive socket at one end. A cylindrical carrier slidably nested within said socket and has a series of drive slots which receive a corresponding series of drive balls nested within said socket interconnecting said shank and carrier for rotation in unison and providing for longitudinal adjustment of the carrier relative to the socket. The carrier is adapted to receive a tap retaining bushing. A tension and compression adjusting screw is nested within said shank and at one end, loosely secured upon said carrier. A tension and compression adjusting nut is threaded into said shank and is interconnected with said screw so that rotation of the screw will effect longitudinal adjustment of the adjusting nut.

Abstract: A universal floating tool holder adapted for floatingly holding tools and particularly adapted for holding a tap for a tapping tool. The toolholder embodies telescoping bodies with a clutch in between the two bodies. Also between the telescoping bodies there are provided resilient means preferably in the form of O-rings. Provision is made for a limited amount of relative axial movement or displacement between the two bodies sufficient for clutch disengagemeent. The resilient means between the two bodies allows for relative radial or lateral float or displacement of one body relative to the other. The outer telescoping body holds the tool which may be attached in a chuck.

Abstract: Apparatus for cutting work provided with centering means and supported adjacent a housing drivably mounted for rotation on a frame, the housing being arranged to support a floating, cutting assembly having a cutting head and centering means for initial alignment with the centering means on the work and subsequent cutting of the metal by the cutting head to remove an annular portion of material from the work.

Abstract: A collet chuck which can be centred relative to an axis of the workpiece to be machined and suitable for machine tools in general and in particular machine tools having a number of successive positions. An inner prehensile member is capable of gripping the workpiece, and an intermediate member coaxial to the first has a conical seating which slides axially causing the prehensile member to close on the workpiece to be machined. An outer casing is rigidly attached to the prehensile member by means of a pin, and an outer ring is fitted with radial play around the periphery of outer casing. Spring members of variable tension compress the outer casing and outer ring against each other to lock them together by friction, and pusher means operable axially by a thrust member unlock the outer casing and the outer ring.