The present subject matter relates to automated gemstone feeding in a gemstone processing machine. In an implementation, the gemstone processing machine has a feeding conduit unit to receive a rough gemstone affixed to a holder from a user. The feeding conduit unit delivers the holder to a base plate. An actuating arm picks the holder from the base plate and transfers the holder to a pre-defined position in the gemstone processing machine. The automated feeding mechanism is controlled by the computing device and uses low-cost hardware equipment having limited or no manual intervention. Thus, providing an apt tradeoff between the accuracy of transfer of the rough gemstone and the cost associated with the equipment used for the processing of the gemstone.

A robotic paint repair system that can comprise: a consumable abrasive product configured to abrade a substrate, a tool configured to drive the consumable abrasive product to abrade, a robotic device configured to manipulate the tool and a compliant accessory actuator positioned between the tool and the substrate, wherein the compliant accessory actuator is driven to apply a desired force and a desired stiffness to the consumable abrasive product in response to sensed data collected between the tool and the substrate.

A wheel outer rim fillet dressing device, wherein after a wheel is roughly positioned, an electric cylinder drives a moving plate to descend to an appropriate position, an adjusting cylinder drives a second sliding table to move away from a first sliding table, the first sliding table moves synchronously with the second sliding table under the action of a second gear rack, thus the distance between a precision positioning post on the first sliding table and a precision positioning post on the second sliding table is adjusted, and the precision positioning posts contact a vertical surface of a cap seam allowance of the wheel and hold the wheel tightly. The adjusting cylinder is restarted, and the outer rim fillets can be dressed when the distance between first and second cutters for dressing wheel outer rim fillets is adjusted to an appropriate position and under the cooperation of the rotating wheel.

A carrier head for a chemical mechanical polishing apparatus is provided. The carrier head includes a base and a substrate receiving member connected to a lower part of the base. Inside of the substrate receiving member, at least one contact flap is connected to the lower part of the base. The at least one contact flap includes a connecting portion, a side portion extended downwardly from the connecting portion and a contact portion extended sidewardly from a bottom end of the side portion. Adjacent to the at least one contact flap, at least one wall structure is connected to the lower part of the base to limit an expansion of the at least one contact flap for a firm contact of the contact portion with an inner surface of the substrate receiving member by means of fluid pressure.

A machine tool comprises first and second support arms, and a rigid structure which couples the first support arm to the second support arm. A first rotary drive is operable to rotate the first support arm and the rigid structure relative to each other about a first rotational reference axis, and a second rotary drive is operable to rotate the second support arm and the rigid structure relative to each other about a second rotational reference axis, wherein the first and second rotational reference axes are parallel and spaced apart by a fixed distance. A control arrangement is configured to control the first and second rotary drives such that a workpiece mount carried by the second support arm follows a predetermined path relative to a tool mount carried by the first support arm in a plane perpendicular to the rotational reference axes.

A hand-held/hand-guided random orbital polishing/sanding power tool has a static body and a motor for driving an eccentric element with a rotational movement about a first rotational axis, and a plate-like backing pad rotatably connected to the eccentric element about a second rotational axis. The first/second axes extend parallel to and spaced apart from one another. Part of an external circumferential surface of the eccentric element has a rotational symmetry re the first axis to form a rotationally symmetric part. The tool has a first bearing between the rotationally symmetric part and the static body so the eccentric element is rotatably guided re the static body about the first axis, and also having a mechanical gear arrangement with two meshing gear wheels arranged between the motor's drive shaft and the eccentric element, and one meshing gear wheel attached to the eccentric element for transmitting torque thereto.

A corrective grinding device for machining a surface to be ground (2A) of a part of revolution (2) with a main central axis (X2), comprises a base (5) to be fixed on the frame (3), a machining head (10) comprising an abrasive belt (11) which is guided along a belt path (12) so as to be pressed against the surface to be ground (2A) in a first penetration direction (Y10), a belt-driving motor (16) arranged to drive the abrasive belt (11) in motion along the belt path (12), a head movement system (23) for moving the machining head (10) on the base (5) in a second feed direction (X10) along the main central axis (X2). In orthogonal projection in a base plane (P10) defined by the feed direction (X10) and the penetration direction (Y10), the projected surface of the abrasive belt (11) overlaps the projected surface of the stator (17) of the belt-driving motor (16).

An attachment for a mobile handling device is configured for processing walls or ceilings. The attachment comprises a mounting unit that is arranged to be supported at a mounting interface of the handling device, a processing head that is arranged to be equipped with at least one tool for material-removing processing or smoothing processing, and a compensation arrangement that is arranged between the mounting unit and the processing head and that defines a longitudinal axis. The mounting unit provides at least two pivot positions for the attachment that are offset from one another. The processing head is movable relative to the mounting unit in a longitudinal direction along the longitudinal axis. The compensation arrangement is configured to provide a defined contact pressure force for the processing head in a defined operating range along the longitudinal axis towards the surface to be processed.

A method for slicing a workpiece with a wire saw which includes a wire row formed by winding a fixed abrasive grain wire having abrasive grains secured to a surface thereof around multiple grooved rollers, the method including feeding a workpiece to the wire row for slicing while allowing the fixed abrasive grain wire to reciprocatively travel in an axial direction thereof, thereby slicing the workpiece at multiple positions aligned in an axial direction of the workpiece simultaneously. The method includes: supplying a coolant for workpiece slicing onto the wire row when the workpiece is sliced with the fixed abrasive grain wire; and supplying a coolant for workpiece drawing, which differs from and has a higher viscosity than the coolant for workpiece slicing, onto the wire row when the workpiece is drawn out from the wire row after the slicing of the workpiece.

A multi-axis polishing apparatus includes a machine body, a multi-axis transmission device, and an abrasive container set. The multi-axis transmission device, movably mounted onto a main vertical column in a machine body that can move in an insertion direction, includes a driving module and a plurality of shaft assemblies connected transmissively to the driving module. The plurality of shaft assemblies is used to mount a plurality of workpieces, respectively. The abrasive container set, located below the multi-axis transmission device, is filled with abrasive materials. The multi-axis transmission device moves in the insertion direction to position the plurality of shaft assemblies as well as the plurality of workpieces downward into the abrasive container set, and then the driving module rotates the plurality of shaft assemblies and the plurality of workpieces to utilize the abrasive materials to polish the plurality of workpieces.