Abstract: The invention relates to a system (21) of finishing a part (1) comprising at least two materials of different hardness, the system (21) comprising at least one accommodating device (23, 23?), used as a container for abrasive means (20) and a support device (25) comprising a means (22) of securing the part (1). According to the invention, the system (21) further includes a means (27) of moving the part (1) closer against the abrasive means (20) and a means (29) of moving the part (1) relative to the accommodating device (23) along the required satin finish lines. The invention concerns the field of timepieces.

Abstract: A method of CMP polishing of a semiconductor wafer is described that includes using a polishing pad on a platen/table with the polishing pad including a sub-pad containing pockets of magnetorheological fluid. The stiffness of the sub-pad is controlled by selectively applying a magnetic field at selective pockets containing magnetorheological fluid to change the viscosity of the magnetorheological fluid. The changing stiffness increases the polishing rate of the pad in the areas of the magnetic field.

Abstract: Apparatus (1) for grinding a suspension of a particulate solid material. The apparatus (1) comprises a grinding chamber (2), means (7, 8) for introducing a suspension of the particulate solid material into the grinding chamber (2) and an impeller (6) which is rotated and thereby agitates the particulate grinding medium and the suspension of particulate solid material in the grinding chamber (2). The impeller (6) has at least one blade (12), the said blade (12) having a leading face (14) in the direction of rotation (R) of the impeller (6), which leading face (14) is offset relative to a plane of rotation of the impeller (6). In a preferred embodiment, an upper edge of the said leading face (14) is the leading edge and a lower edge of the said leading face is the trailing edge of each blade (12), so that the impeller (6) acts to drive the material in the grinding chamber (2) downwards towards a base of the grinding chamber (2), thereby compresing the material in the grinding chamber (2).

Abstract: A guide gib for gib-guided cutting tools that serves for precision machining of rotationally symmetrical bores is ground on its working surface so as to match the nominal diameter of the tool surface, by grinding with diamond abrasive, the guide gib being a PCD guide with a hardness corresponding to the cobalt proportion of the PCD material used for production. The cobalt proportion is greater than 10%.

Abstract: In a method for ultrafine grinding of solid particulate material to mean particle sizes far below 1 micrometer and/or for mixing of powder and agglomerate material with mean particle sizes in the range of nanometers, the material to be ground and/or mixed and an grinding/mixing additive are filled into a cooled grinding chamber containing loose grinding media. By motion of the grinding media relative to adjacent media and to the walls of the grinding chamber the material is ground to the desired particle size and/or is finely mixed. Subsequently the additive is removed from said material. For the production of particle sizes in the range of nanometers and/or for mixing particles of this size range, the method comprises that grinding and/or mixing is carried out in a cooled atmosphere in the presence of a fine grained solidified additive which is chemically inert to said material, preferably water ice or solid carbon dioxide, at temperatures below their melting or sublimation temperature.

Abstract: A finishing assembly for vibratory finishing of workpieces in loose finishing media includes at least one generally annular finishing chamber which is driven by a drive assembly and supported by a support housing. The drive assembly consists of a crank shaft and a drive shaft which are rigidly connected to each other through a wedge-shaped gasket and oriented such that the rotary axis of the crank shaft and the rotary axis of the drive shaft intersect with one another at a predetermined angle. The crank shaft rotates within a first bearing hub which is rigidly mounted within the chamber and the drive shaft rotates within a second bearing hub which is rigidly secured to the assembly housing and which is actuated by an electric motor. The spatial vibration of the finishing assembly can be adjusted using a wedge-shaped gasket and/or by providing for horizontal displacement of the first bearing hub from the second bearing hub.

Abstract: A method of cleaning a solid surface which is particularly effective for a surface having a complicated structure including slots and holes comprises immersing the solid surface in a cleaning slurry comprising a cleaning liquid and abrasive particles which are soluble in the cleaning liquid, the cleaning liquid comprising a saturated solution so as to greatly reduce the dissolution of the abrasive particles in the cleaning liquid.

Abstract: This invention relates to a vibrating abrasive cleaning apparatus and method which is powered by a hydraulic drive motor mounted to a square tubing frame which is housed within an enclosure that is vibrated by an eccentric shaft assembly directly coupled to the hydraulic drive motor and square tubing frame. The container assembly is mounted on the rigid square tubing frame, on one side by compression springs, on the opposite side by tension springs. The compression springs and tension springs have a different spring rate which produces better rolling of the media and therefore, faster parts circulation and cleaning. To further give flexibility to the cleaning process the hydraulic power supply is equipped with the variable volume piston pump to give infinite speed settings. The eccentric shaft assembly with the eccentric weight positions set at different relative positions to one another gives the operator the ability to adjust the machine to produce optimum results with all parts, sizes, and weights.

Abstract: A washing liquid and a granular substance in the quantity equivalent to or more than the liquid in the specific gravity are accommodated in a barrel in a manner to position the surface of the liquid above the top surface of a granular substance layer at a stationary state of the barrel, and the barrel is swung with an object to be washed which is accommodated therein to wash away stains firmly stuck.In the same manner, various treatment liquid such as a plating liquid and a granular substance which possess conductivity or without conductivity are accommodated in the barrel with an object to be treated. By swinging the barrel, the treatment liquid and the granular substance are stirred and flow in the barrel so that the fluidity of the treatment liquid and granular substance relative to the object to be treated is improved to raise treatment effect and uniformity in the process. Thus, high quality surface treatment can be accomplished in high productivity.

Abstract: A method of polishing an object is disclosed. In one embodiment, the method comprises the steps of creating a polishing zone within a magnetorheological fluid; determining the characteristics of the contact between the object and the polishing zone necessary to polish the object; controlling the consistency of the fluid in the polishing zone; bringing the object into contact with the polishing zone of the fluid; and moving at least one of said object and said fluid with respect to the other. Also disclosed is a polishing device. In one embodiment, the device comprises a magnetorheological fluid, a means for inducing a magnetic field, and a means for displacing the object to be polished or the means for inducing a magnetic field relative to one another.

Abstract: An apparatus for polishing medals for a game machine, and for separating an abrasive from the medals. An intake port (2) for the medals and the abrasive is provided on the lower end side of a polishing pipe (1) set upright, while a medal delivery port (3) is provided on the upper end side. A rotatable screw element (4) is mounted inside the polishing pipe (1) so as to lift up the medals and the abrasive while stirring them. A separation unit (A) which separates the abrasive from the medals and which feeds the separated abrasive to the intake port (2), is joined to the upper part of the polishing pipe (1).

Abstract: This invention relates to a vibrating abrasive cleaning apparatus and method which is powered by a hydraulic drive motor mounted to a square tubing frame which is housed within an enclosure that is vibrated by an eccentric shaft assembly directly coupled to the hydraulic drive motor and square tubing frame. The container assembly is mounted on the rigid square tubing frame, on one side by compression springs, on the opposite side by tension springs. The compression springs and tension springs have a different spring rate which produces better rolling of the media and therefore, faster parts circulation and cleaning. To further give flexibility to the cleaning process the hydraulic power supply is equipped with the variable volume piston pump to give infinite speed settings. The eccentric shaft assembly with the eccentric weight positions set at different relative positions to one another gives the operator the ability to adjust the machine to produce optimum results with all parts, sizes, and weights.

Abstract: A method of polishing an object is disclosed. In one embodiment, the method comprises the steps of creating a polishing zone within a magnetorheological fluid; determining the characteristics of the contact between the object and the polishing zone necessary to polish the object; controlling the consistency of the fluid in the polishing zone; bringing the object into contact with the polishing zone of the fluid; and moving at least one of said object and said fluid with respect to the other. Also disclosed is a polishing device. In one embodiment, the device comprises a magnetorheological fluid, a means for inducing a magnetic field, and a means for displacing the object to be polished or the means for inducing a magnetic field relative to one another.