A grinding wheel has a flat, circular carrier surface (1) on which a plurality of elongated grinding members (2) are arranged running least partially radially. A discharge opening (3) is disposed ahead of each of the grinding members (2) in the circumferential direction (U). Furthermore, the carrier surface (1) has a basically truncated conical central depression (4) facing away from the grinding members (2). The discharge openings (3) abut the L-shaped grinding members (2) in a direction of rot...

The invention relates to an improved grinding wheel for grinding eye glass edges. The grinding wheel comprises a base member and an abrasive coating of diamond and metal. The base member 3 consists substantially of plastic material and an annular member 2 of metallic material is provided between the base member 3 and the coating 1. The metallic material of the annular member 2 has a strength withstanding the forces occuring in sintering the coating to the annular member.

The apparatus includes a frame and a holder rotatably secured to the frame for releasably holding a first workpiece of the workpieces. A mechanism is provided for rotating the holder from a loading station to a grinding station and a grinder is movably secured to the frame and selectively positionable relative to the first workpiece when the first workpiece is located at the grinding station. A control is included for selectively positioning the grinding means relative to the first workpiece for...

In a grinding machine grinding a workpiece W by a grinding wheel G to supply coolant to one of a grinding point P or the workpiece W by way of a relative movement between the grinding wheel W rotatably supported on a wheel slide 11 and the workpiece W supported by a work support device 17, air layer 36 flowing on a circumferential surface Gc of said grinding wheel G by blowing hydraulic jet 35 transversally from one side to the other side of the grinding wheel G along the circumferential surface...

In a grinding disk (100) for the rotary slaving on a driven shaft of a grinding machine, in particular of a hand grinder, which has at least one supporting plate (10) with at least one cut or opening (20) through which the abrasive dust which develops by grinding can be sucked by means of at least one suction bell placed in or on the grinding machine, the cut or opening (20) is configured aerodynamically.

The present invention provides a grinding sheet wherein the width of the ridge in the pattern of abrasive layer is larger than the width of the recess formed between the adjacent portions of the ridge. Its shape is suitable to carry out uniform treatment without causing the workpiece to drop into the recess between ridge portions of the pattern of abrasive layer even when the workpiece is swung while the grinding sheet is rotated during grinding operation.

To grind a peripheral surface of a rotated work (10), by a rotary grindstone (22) rotated by a wheel spindle 21, a rotary brush (40) is mounted to one side of the rotary grindstone (22), so that it is rotated along with the rotary grindstone (22). Subsequently to the grinding of the work (10) by the rotary grindstone (22), the rotary grindstone (22) and the work (10) are moved axially relative to each other, and a ground surface of the work (10) is brushed by the rotary brush (40), whereby the p...

In the grinding process, grinding fluid is supplied toward the grinding point where a workpiece is ground with a grinding wheel. At the same time, a fluid jet is ejected across the air flow above the grinding point in the rotational direction of the grinding wheel. As a result, the air layers on both lateral sides of the grinding wheel are turned not to head for the grinding point above the same, whereby the grinding fluid is reliably led to the grinding point without being obstructed by the air...

A grinding apparatus and a grinding system capable of efficient and superior grinding performance prevent the falling of a belt during the grinding of an edge surface thereof. The apparatus includes two rotating bodies 31 and 32 each having segment brushes 4, 4, . . . attached in the circumferential direction at the edge thereof. The rotating bodies 31 and 32 are rotated in the same direction. The tip of the segment brushes 4, 4, . . . is opposed to one edge surface of a belt b stretched between...

A grinding method of a rotating workpiece W having a cylindrical part 20 and a pair of end faces 21 at both sides of the cylindrical part 20 uses a grinding wheel 10 whose grinding stone is narrower than a finishing width S1 between the end faces 21. In a first grinding step, the grinding wheel 10 is relatively moved to the cylindrical part 20 in a direction crossing the rotational axis of the workpiece W and is shuttled along the rotational axis of the workpiece W at least one time between the ...