An adjustable hub adapter for coupling an on-car brake lathe to a wheel hub. An annular support frame coaxially carries an axially bored and threaded central mounting hub with a set of equidistantly spaced spokes. A lug bolt receiver is associated with each spoke, and consists of a receiving tube, a lever arm pivotally coupled to the spoke at a pivot bolt in proximity to the annular support frame. An engagement pin on each lever arm is captured within a synchronizing ring carried on the annular support frame. The rotational movement of any lug bolt receiver about an axis of the pivot bolt imparts rotational movement to the synchronizing ring, and in turn, causes each remaining bolt receiver to rotate about an associated pivot bolt axis, maintaining the lug bolt receivers in a synchronized and symmetric radial displacement from the central mounting hub.

A blade attachment-detachment assisting apparatus includes a nut rotating part having an engagement pin that engages with an engagement hole of a nut, a nut grip part that grips an annular groove of the nut, a housing that supports the nut rotating part rotatably by a predetermined angle, and a lock mechanism. The nut rotating part is capable of advancing and retreating, relative to the housing, to a protrusion position and a fixing position at which engagement between the nut grip part and the nut is kept, and is fixed to the housing with the intermediary of a spring. The lock mechanism includes an inside surface by which advancing and retreating of the nut rotating part are restricted through engagement of the nut rotating part with the housing when the housing is rotated in one direction at the fixing position to which the nut rotating part has been pushed.

On an inner peripheral surface defining a through hole of a first rotator, provided is a positioning member for bringing the center axis of a contact tip, housed in the through hole, into alignment with a rotational axis, or making the former axis proximate to the latter axis, by coming into contact with an outer peripheral surface of the contact tip.

A spindle unit for machine tools that includes a working spindle rotationally bearing-mounted in axially spaced spindle bearings in a spindle case, and an electric driving motor. The working spindle includes at its head side a clamping device for a tool and at its rear side a non-rotating ring cylinder for activating said clamping device via a rotating tie rod, and rotational bushing for supplying said tool with cooling and/or lubricating agents through a hydraulic conduit extending longitudinally through said working spindle. At least a segment of the non-rotating ring cylinder may be received in the rear end portion of said working spindle.

A latching mechanism for a tool spindle or mandrel that latches by pivotally extending a plurality of tensioned arms from a tensioned seated state to a tensioned locked state through rotation of a lock ring pivotally deploying the arms from their nested seated state into a blade engaging position of a larger radius than the radius of the lock ring with the arms in their nested position.

A workholding chuck that allows for a sizable gripping range by utilizing a rotary clamping method with dual stage motion. The dual stage rotary gripping chuck allows small diameter parts to be clamped, as well as parts that are larger than the main chuck body diameter. The dual stage motion allows resistance to be first achieved by lightly clamping on a workpiece, which is then converted to a high force-to-movement ratio. The workholding chuck employs two helical connections that allow for a large gripping diameter variation with a short amount of axial travel.

A centering mechanism for retaining an object, wherein the centering mechanism has a locking mechanism, having at least a first tangential surface. Furthermore, the centering mechanism can be used in conjunction with a mechanism for retaining an electronic device or an electronic device in a case. The structure of the centering mechanism and the locking mechanism allows for the locking mechanism to further actuate and lock the centering mechanism, such that an object retained therein is secured and aligned.

A method for supplying, positioning and processing fixing elements using a transport means which moves the fixing elements from a starting position to a processing position whereby the individual fixing elements are introduced into a chuck provided with two clamping jaws, are held by the clamping jaws in an engaging position and, once the chuck has been positioned, are taken up from this position by a driving element and the chuck presses them against a locating device and a connection is made to a component part by the driving element when the chuck is opened, wherein the upward motion of the chuck, while feeding the fixing element to the locating device, prevents the supply of further fixing elements to the chuck.

A device for mounting a ring gear of an epicyclic gear train, the ring gear including a front ring gear and a rear ring gear, the device including: a plurality of longitudinal guides; a front mounting forming a portion of circle, including: at least two holes for passing the guides; a plurality of first system for supporting and rotating the front ring gear relative to the axis thereof, movable between a first position in which the front ring gear is supported and can rotate relative to the axis thereof and a second position in which the front ring gear is not supported; a rear mounting forming a portion of circle, including: at least two holes for passing the guides; and a plurality of second system for supporting and rotating the rear ring gear relative to the axis thereof, movable between a third position in which the rear ring gear is supported and can rotate relative to the axis thereof and a fourth position in which the rear ring gear is not supported.

A latching mechanism for a tool spindle or mandrel that latches by pivotally extending a plurality of tensioned arms from a tensioned seated state to a tensioned locked state through rotation of a lock ring pivotally deploying the arms from their nested seated state into a blade engaging position of a larger radius than the radius of the lock ring with the arms in their nested position.