A device adapted to releasably lock with a bolt, the device comprising a front cover having a cavity which extends from the front cover to a rear portion of the device, wherein the cavity is adapted to receive the bolt with mounting concave portions for mounting the bolt in the cavity; a locking mechanism comprising a first group of locking shape, wherein the first group of locking shapes is moveable between a first position and a second position, wherein the first position is in the cavity, and the second position is in a corresponding first group of locking shape recesses. A moveable block comprising the first group of locking shape recesses; wherein disengagement of the first group of locking shapes is activated by movement of a release plate thereby allowing the first group of locking shapes to retract from the cavity into the first group of locking shape recesses.

A plurality of friction rods each of which is positioned in a hole around the retaining bore with a portion of each of the plurality of friction rods partially protruding into the retaining bore for directly engaging the shank of the tool for holding the shank of the tool in the retaining bore at the defined contact surfaces.

An interlocking collet system includes an attachment comprising first and second attachment surfaces spaced from one another and a collet. The collet comprises a housing configured to extend along an axis. The housing defines a bore for selectively disposing and retaining the attachment therein in an installed position. First and second locking members are disposed within the bore and are moveable. At least one bias member is disposed within the bore and is arranged to position the first locking member in a first position in which the first locking member is configured to contact the first attachment surface. The at least one bias member is arranged to position the second locking member in a second position in which the second locking member is configured to contact the second attachment surface. The first and second locking members are configured to exert opposing axial forces on the attachment.

Instrument couplings and related methods are disclosed herein, e.g., for coupling a surgical instrument to a navigation array or other component. The coupling can reduce or eliminate movement between the instrument and the navigation array, improving navigation precision. The coupling can be quick and easy to use, reducing or eliminating the need for extra steps or additional tools to attach or detach the instrument from the coupling. In some embodiments, the single step of inserting an instrument into the coupling can automatically lock the instrument within the coupling in a toggle-free manner.

Instrument couplings and related methods are disclosed herein, e.g., for coupling a surgical instrument to a navigation array or other component. The coupling can reduce or eliminate movement between the instrument and the navigation array, improving navigation precision. The coupling can be quick and easy to use, reducing or eliminating the need for extra steps or additional tools to attach or detach the instrument from the coupling. In some embodiments, the single step of inserting an instrument into the coupling can automatically lock the instrument within the coupling in a toggle-free manner.

A pushing structure of a clamping mechanism is disclosed which comprises a working platform and a chuck. The working platform has a clamping shaft inserted in the chuck, and the chuck has a piston seat and a movable seat at a center of the piston seat for an insertion of the clamping shaft. The chuck further comprises a base at a bottom of the piston seat corresponding to the movable seat and a projection at a bottom of the base. The projection provides an upward push force to the working platform when the piston seat is lifted to release the clamping shaft of the working platform.

The invention discloses a precision fixture for improving the balance precision of a wheel, comprising a chuck, a base, a servo motor, a lower pressure plate, a rubber strip, steel balls, an upper pressure plate, a mounting plate, a connecting shaft, a shaft sleeve, a hydraulic cylinder, a bearing end cover, bearings, a guard, an expanding core, expanding flaps, a flange plate, springs, pins, a flange, a connecting shaft and limiting columns. The fixture can meet the requirement for improving the balance precision of a wheel, at the same time, has the characteristics of simple structure, convenient manufacture, stable performance and precision that can meet the machining requirement, and can meet the requirements of automatic production.

A locking device has a collar body, a roller cage, multiple rollers, and a clamping set. The collar body has a chamber formed inside the collar body and multiple concave recesses formed in an inner periphery of the collar body. The roller cage is mounted in the chamber. The clamping set has multiple clamping blocks annularly disposed within the roller cage. Each one of the multiple clamping blocks is curved and has multiple second concave recesses formed in an outer peripheral surface of the clamping block. The multiple rollers are rotatably mounted to the roller cage and are respectively received by the multiple first concave recesses and the multiple second concave recesses. Each one of the multiple rollers is rotatable along a corresponding one of the multiple first concave recesses and a corresponding one of the multiple second concave recesses.

A tool holding system for a rotary power tool is configured to clamp around a working tool when the working tool is inserted in the tool holding system. The tool holding system includes a sleeve having a frustroconical inner surface portion, a collet having frustoconical outer surface portion complementary to the inner surface portion, a spring mount operably connected to a motor for rotation by the motor, and a spring. The spring includes a first end portion operably connected to the collet to bias the collet toward a first position whereat the outer surface portion engages the inner surface portion, and a second end portion rotationally fixed with respect to the spring mount.

The invention discloses a precision fixture for improving the balance precision of a wheel, comprising a chuck, a base, a servo motor, a lower pressure plate, a rubber strip, steel balls, an upper pressure plate, a mounting plate, a connecting shaft, a shaft sleeve, a hydraulic cylinder, a bearing end cover, bearings, a guard, an expanding core, expanding flaps, a flange plate, springs, pins, a flange, a connecting shaft and limiting columns. The fixture can meet the requirement for improving the balance precision of a wheel, at the same time, has the characteristics of simple structure, convenient manufacture, stable performance and precision that can meet the machining requirement, and can meet the requirements of automatic production.