In a general aspect, a machining tool includes a diamond crystal having a working section configured to machine a workpiece. The machining tool includes a body and a shank extending from the body. The shank defines a cylindrical slot outside the body. The machining tool includes an assembly carried by the shank. The assembly includes a cylindrical pin that resides in the cylindrical slot. The assembly also includes a diamond crystal secured to an end of the cylindrical pin. The diamond crystal has a curved perimeter that defines a working section, which contacts a workpiece during operation of the machining tool. The shank is adapted to allow rotation of the cylindrical pin within the cylindrical slot to modify the working section.

A tool holder (1) includes a clamping member (4) for clamping and holding a tool (5), a holder body (2) having, at a leading end thereof, a receiving portion (25) for receiving the clamping member (4) along an axis (AX) and an operational member (N) for attaching the clamping member (4) to the holder body (2). The clamping member (4) clamps the tool (5) by an operation of the operational member (N). Vibration is applied to a contact portion (T) between the clamping member (4) and the holder body (2) when the clamping member (4) clamps the tool (5).

A gripping device (100) for holding, centring and/or clamping a micromechanical or horological component (200) in a chamber delimited by a collet including at least one movable jaw (2) and at least one stationary jaw (3), wherein some of the movable jaws (2) and/or stationary jaws (3) include a reference surface (20) to support a component (200) bearing frontally thereagainst, and the gripping device (100) includes both, on the one hand, stationary jaws (3) including the reference surface (20) to support the component (200) bearing thereagainst, and movable jaws (2) for centring and/or clamping the component (200), and on the other hand a vacuum generator (60) for creating the vacuum in the clamping chamber. Also a related method.

A device for removing circumferential burrs of a wheel with high precision includes an electric cylinder, a lifting table, guide rails, an electric cylinder, a sliding block, a plurality of sensors, a rim burr cutter, a riser burr cutter, and the like. The device can simultaneously remove circumferential burrs from the flange edge, the outer rim and the riser slot edge, which eliminates the error caused by coaxial degree deviation, so that the rotating center of the cutters coincides with the circumferential center of the burrs. The device is configured to provide high-precision removal of burrs from the flange edge, and high-precision removal of burrs from the outer rim and the riser.

A device for the precise angular positioning of tool-holders suitable for CNC machines, in particular tool-holders (10) motorised or non-motorised, comprising a front part (12) and an opposite rear part (14) and suitable to perform angular machining on multi-spindle and single-spindle CNC lathes, on transfer machines, milling centres and machine tools which perform machining by chip removal, comprises a plug (18) cooperating with a pair of pins (28), (30) arranged orthogonally relative to said plug and adjustable in rotation. Each of the pins (28), (30) comprises an offset cylindrical central portion (32), forming a cam which, by rotating, interacts with said pins to achieve said precise angular positioning of the tool-holders (10).

The present disclosure generally relates to a drilling tool having one or more locating brackets. The locating brackets include contacts that when engaged by a workpiece or a component adjacent to a workpiece, complete a pneumatic circuits of a pneumatic switch. Completion of the pneumatic circuits facilities operation of a drill of the drilling tool, thus allowing operation of the drilling tool and/or engagement of the drill with a workpiece. The locator brackets are sized and positioned such that engagement of the contacts occurs when the drilling tool is located in a predetermined position, thereby ensuring that drilling of a hole occurs in a desired location.

A screwing tool includes a tool head and a tool shaft having an external thread. A first support section is disposed between the tool head and the external thread, and a second support section is disposed between the external thread and a free end of the tool shaft. The second support section has radially outwardly projecting supporting elements that are disposed at a distance from each other in the circumferential direction.

A balancing or measuring device includes a main body which is rotatable about an axis and includes an opening for accommodating a coupling shaft of a component to be balanced or measured, and having a centering element which can be axially displaced within the main body against a spring arrangement to center the component in the main body. In order to ensure maximum concentricity also in a balancing or measuring device having a small number of parts, the spring arrangement is designed to be integral with the centering element.

A fastener for fastening a drill jig to overlapping work pieces and clamping the overlapping work pieces for facilitating accurate drilling of the overlapping work pieces including a fastener body and a damper assembly operatively connected to the fastener body. The damper assembly is configured to enable application of a first load to the drill jig, and the fastener body is configured to enable application of a second load to the overlapping work pieces when the fastener fastens the drill jig to the overlapping work pieces. The first load is less than the second load. The first load is sufficient to hold the drill jig to the overlapping work pieces during drilling but without causing significant deformation of the drill jig. The second load is sufficient to reduce the formation of burrs during drilling of a hole through the overlapping working pieces.

A fastener for fastening a drill jig to overlapping work pieces and clamping the overlapping work pieces for facilitating accurate drilling of the overlapping work pieces including a fastener body and a damper assembly operatively connected to the fastener body. The damper assembly is configured to enable application of a first load to the drill jig, and the fastener body is configured to enable application of a second load to the overlapping work pieces when the fastener fastens the drill jig to the overlapping work pieces. The first load is less than the second load. The first load is sufficient to hold the drill jig to the overlapping work pieces during drilling but without causing significant deformation of the drill jig. The second load is sufficient to reduce the formation of burrs during drilling of a hole through the overlapping working pieces.