The invention discloses a novel multi-station disc type buffing machine. The novel multi-station disc type buffing machine comprises a rotary table assembly. Clamp devices of multiple stations are evenly arranged on the rotary table assembly at equal angles in the circumferential direction. A space is left in the portion, corresponding to the clamp device of one station, of the periphery of the rotary table assembly to form a loading and unloading station. The portion, corresponding to each clamp device of the remaining stations, of the periphery of the rotary table assembly is provided with a buffing device. Each clamp device comprises multiple linked clamp assemblies. Each buffing device comprises a three-direction sliding assembly and a buffing machine head assembly arranged on the three-dimension sliding assembly. Each buffing machine head assembly comprises multiple machine head structures corresponding to the clamp assemblies one to one. The rough polishing procedure and the fine polishing procedure can be finished on one machine, the fine polishing requirements of workpieces of different hook face shapes and sizes are met, production efficiency is greatly improved, it is guaranteed that the polishing quality of the workpieces is stable and consistent, production efficiency is greatly improved, and economic benefits are greatly increased.

Novel multi-station disc type buffing machine

A polishing apparatus for semiconductor wafers includes an index table with multiple wafer positions, with different surface treatment arrangements for each position. With each index motion of the table, the table is sequentially loaded and unloaded while wafers carried at the remaining stations of the index table are moved for a subsequent surface treatment step. Progress of the surface treatment at each position is monitored and, optionally, subsequent surface treatment steps may be modified to achieve a desired final condition of the substrate being processed.

Apparatus and method for the face-up surface treatment of wafers

An abrasing apparatus including an annular barrel having an upper opening. The barrel is rotated around an exciting coil and is filled with magnetic abrasive powder which is arranged by magnetic flux generated by the exciting coil to form magnetic brush. A work is embedded into the magnetic brush. The work is rotated together with a spindle and the barrel is rotated so that the surface of the work is abrased by the magnetic brush. A bottom magnetic pole, a lateral magnetic pole and an upper magnetic pole are disposed in an inner periphery in the barrel in the proximity to the exciting coil and the strong magnetic brush is locally formed therein. The side portion of the work is located in the local magnetic brush, and the bottom, side and upper surfaces of the work are abrased like a mirror surface.

Abrasing apparatus using magnetic abrasive powder

Anlage zur Herstellung einer Leichtbaustruktur mit – einer zentralen Dreheinrichtung (18), die zumindest drei in Umfangsrichtung winkelmasig beabstandet zueinander angeordnete Halteeinrichtungen (28) zur Aufnahme der Struktur (36) besitzt sowie einen Antrieb (22) zum Drehen der Dreheinrichtung (18) in Umfangsrichtung, – einer Einlege- und einer Entnahme-Station (12) zum Einlegen eines Halbfertigproduktes (90) fur die Leichtbaustruktur und zur Entnahme der hergestellten Leichtbaustruktur, – einer Beschichtungsstation (14) zur Aufbringung einer Beschichtungsschicht (92) auf zumindest eine Oberflache des Halbfertigproduktes (90) und – einer Verpressstation (16) mit einer Presse umfassend ein Pressuntergestell mit einer unteren Pressplatte und ein Pressobergestell mit einer oberen Pressplatte zum Verpressen des beschichteten Halbfertigproduktes, wobei alle Stationen (12, 14, 16) umfangsmasig um die Dreheinrichtung (18) angeordnet sind und in der Beschichtungsstation (14) eine Robotvorrichtung (50) mit einem Robotarm vorgesehen ist, an dem eine Materialaustragsvorrichtung (52) zur Aufbringung der Beschichtungsstruktur (92) vorgesehen ist.

Anlage zur herstellung einer leichtbaustruktur

The invention discloses automatic integrated equipment for polishing and perforation of a glass cover. The automatic integrated equipment comprises: a rotary polishing machine, wherein a turntable is arranged on the rotary polishing machine; a plurality of stations are arranged on the turntable, including a product placing station, a product positioning station, a polishing station, a perforating station, a hole polishing station and a product fetching station all connected end to end in this order; each station is connected to the turntable through a rotation mechanism and a movable bracket device is arranged on the rotation mechanism of each station; a guide positioning device which is arranged above the movable bracket device at the product positioning station; a bed die supporting device which is arranged at the bottom of the movable bracket device at the perforating station; a perforating device which is arranged above the movable bracket device at the perforating station; a hole polishing device which is arranged at the hole polishing station and corresponds to the central position of the movable bracket device; and product ejecting devices which are arranged at the product placing station and the product fetching station, respectively. The automatic integrated equipment improves the quality of finished product of polishing and perforation of the glass cover and also improves the labor efficiency.

Automatic integrated equipment for polishing and perforation of glass cover

A machine is adapted to carry outpolishing/finishing action, using a magnetic abrasive medium, on a shafted gear (5) of the type used in hydraulic gear pumps and having a pair of stub shafts projecting one on either side of a gear wheel. The machine comprises a rotatable work table (1) having on its periphery clamping devices (2) each comprising a bracket fixed to the table (1) and supporting upper and lower holders which engage with the ends of the stub shafts to hold the shafted gear (5) in position to be worked on. A plurality of working stations (4, 6, 7, 8) are spaced around the periphery of the work table (1) and the work table (1) is rotatable incrementally to advance the clamping devices (2) from one station to another to enable the series of working actions to be carried out. A driving device anociated with each clamping device (2) includes a drive gear driven by a motor and resiliantly engaged with the shafted gear (5) when the latter is undergoing treatment at one of the working stations. At least one of the working stations (4) is arranged to carry out polishing action on the stub shafts of the shafted gear (5) and comprises pairs of blades which embrace respective stub shafts therebetween, means for magnetising the blades and means for feeding magnetic abrasive medium into the spaces between the blades and the stub shafts.

Abrasive polishing/finishing machine

Vorrichtung zum gleichzeitigen polieren von haelsen und stirnen und zum abstumpfen der spitzen raender von wellenzahnraedern

The machine for the finishing of workpieces with a complicated profile consists of a rotatable drum (1), in which the workpieces are machined, and of a means for the supply and removal of the workpieces, for example, a manipulator with grippers (12), wherein the drum (1) having a work area (5) having the shape of a torus is formed by a base (6), cylindrical, fixed to the bottom walls (7) and the top of a stationary magnetic core (8). In the center of the work area (5) there is an electromagnetic coil (9) and a disc (10) with a rigid axle (11) to the magnetic core (8) are attached. The cylindrical walls of the working area (5) consist of non-ferromagnetic material, the bottom (6), the axis (11) and the disc (10) of ferromagnetic material. With this machine the workpiece surfaces can be processed smoothly.

Machine for treating work pieces with a complicated profile

In the process for centrifual grinding, an abrasive medium of high kinetic energy is volumetrically compressed by two mutually perpendicular centrifugal forces. The workpieces on which grinding is performed are immersed in the abrasive medium by one of the centrifugal forces and, partially hindered by the friction with the said medium, are turned. The apparatus comprises a base plate (1), on which there is fitted a bearing housing (2), in which there is mounted a spindle with a belt pulley (3), which is driven by a driving belt pulley which is seated on an electric motor (29) fastened on the base plate (1). The workpieces (21) are fitted on arbors (20), which are mounted in bushings (19), which are fastened on a disc (18). The entire construction is surrounded by an outer housing (23). Seated on the spindle with the belt pulley (3) is a column (4), on which there are fastened horizontal columns (9), at each of the ends of which there is arranged an immovable rotor (11), which is surrounded by a stator (12) mounted on the horizontal column (9). Attached on this stator (12) is a working drum (13), fed with an abrasive mixture (15). The disc (18), which bears the workpieces (21), is attached in an axially movable manner on the horizontal column (9), on which there acts a spring (17), which bears with its other end on a bowl (16) rigidly fastened on the horizontal column (9).

Process and apparatus for centrifugal grinding

1. Method for the treatment of ferromagnetic materials in which the materials (9) are exposed to a pulse magnetic field with certain pulse recurrence frequency, amplitude and length and are demagnetized at the end of the treatment, characterized in that the pulse field is bipolar with a ration of positive and negative amplitudes of 1.8 to 0.2, with the pulses of the one polarity having the same or lower recurrence frequency than the pulses of the other polarity.

Atanassov Haralampi Angelov

Papers

Abrasive polishing/finishing machine

Vorrichtung zum gleichzeitigen polieren von haelsen und stirnen und zum abstumpfen der spitzen raender von wellenzahnraedern

Machine for treating work pieces with a complicated profile

Process and apparatus for centrifugal grinding

Method and device for treating ferromagnetic materials