Abstract: A rotary abrasive machining tool (101) is shown. The tool comprises a hub (103) having plurality of axially-oriented radial slots in the outer circumference thereof, and plurality of abrasive segments each of which is located in a respective slot in the hub and which form an abrading surface (102). The abrasive segments comprise a tab for location in a slot in the hub, and an abrading edge defining a plurality of abrasive elements.

Abstract: A method for thermochemically treating a part while masking a portion and corresponding mask are provided. The method includes the steps of providing a mask comprising a body with a seat, at least a deformable sealing washer located in the seat, and a tightening bushing, the body having a cavity, placing a first portion of the part in the cavity, a second portion of the part being located in a passage in the sealing washer, and a third portion of the part being located outside the mask, moving the tightening bushing to its tightened position so that the sealing washer is deformed and applied against the second portion of the part, and applying a thermochemical treatment to the third portion of the part.

Abstract: A method for manufacturing a grinding wheel which is formed by fitting a cylindrical grindstone chip including abrasive grains to a base metal formed to be of a columnar shape, comprises an adhesive agent applying step, a linear guide member arranging step for arranging and attaching a plurality of linear guide members on at least one of the outer peripheral surface of the base metal and the inner peripheral surface of the cylindrical grindstone chip, in parallel with a rotation axis of the base metal and with an equal distance separated in a circumferential direction from one another and a base metal and grindstone chip fitting step for fitting the base metal and the cylindrical grindstone chip to each other by relatively moving the base metal and the cylindrical grindstone chip, interposing therebetween the plurality of linear guide members arranged and attached with the equal distance separated from one another.

Abstract: A tool for generating tooth systems by grinding when the maximum tool diameter is limited by collision contours on the workpiece has a dressable grinding tool that is tightly connected to the tool holder. In one preferred arrangement, the dressable grinding tool is glued on the tool holder.

Abstract: The abrasive grinding wheel includes an annular abrasive grain layer formed by a diamond abrasive grain or CBN abrasive grain and fixed to an outer peripheral surface of a cylindrical grinding wheel core by an adhesive agent. The abrasive grinding wheel further includes a waterproof agent applied on both side end surfaces and an inner peripheral surface of the cylindrical grinding wheel core in order to prevent any water ingress into the inside of the core.

Abstract: An abrasive article including a base having an annular shape defining a central opening; and a mounting assembly coupled to the base, wherein a portion of the mounting assembly is under a compressive force, and a grinding segment coupled to the mounting member.

Abstract: An abrasive article including a base having an annular shape defining a central opening; and a mounting assembly coupled to the base, wherein a portion of the mounting assembly is under a compressive force, and a grinding segment coupled to the mounting member.

Abstract: A grinding lamella (1) for being arranged on a rotatingly drivable grinding wheel (8), has at least two annular portions (4, 5, 6, 7, 24, 25, 26, 27, 34, 35, 36, 37, 44, 45, 46, 47) arranged at an angle (?) relative to one another. At least partially, the grinding lamellae (1) have a shape that deviates from the shape of a circular wheel with a central aperture. The grinding wheel (8) containing the grinding lamellae has at least one carrier element (2) and a least two such grinding lamellae (1) that partially overlap and, together, form an annular shape. If use is made of a pattern (14, 32) for a piece of material or a strip of material for producing the grinding lamellae (1), the grinding lamellae (1) are arranged side by side in the same direction so as to adjoin one another and offset relative to one another by 180°.

Abstract: The present invention relates to a profile strip (1), preferably for a cylinder drum (5) comprising a bottom strip (3) which is designed for replaceable retention of a bottom profile (2) comprising a number of brushes (6) and a number of grinding elements (8) and where the grinding element (8) along the length of a side edge (10) is provided with an edge zone (13) without grinding effect.

Abstract: The invention relates to a grinding tool which comprises at least two detachable parts which are connected together. Both parts form a grinding disk-type body comprising a grinding surface which is interrupted on the peripheral area thereof. Said parts can be adjusted in relation to each other by means of an adjusting mechanism and can be fixed in the respective position thereof, such that the grinding disk-type body can be adjusted in relation to the grinding width thereof. Preferably, said adjustment takes place in a continuous manner. The grinding width can be adjusted in an advantageous manner for a variable grinding width which is to be ground and also for a readjusted grinding width which is to be ground in a plunge-grinding method.

Abstract: A pair of profile wheels 14, 18 in which concavely shaped grinding surfaces 141, 181 asymmetrical to each other are opposed to each other at right angle so as to form a concavely shaped grinding surface having a substantially semi-circular section, a guide plate 13 which is mounted on a spindle 11 of an electric or air tool side of the profile wheel 14 freely rotatably for guiding a grinding direction by bringing the edge of the circular shaped member into contact with a reference face of a grinding object material and a stopper ring 16 which is mounted to a spindle between the pair of the profile wheels 14 and 18 freely rotatably for controlling a grinding distance Y from the edge by bringing its outer peripheral end face 161 into contact with the edge of the grinding object material, are fixed to the spindle 11 with a lock nut such that they are set at right angle to the spindle.

Abstract: A grinding unit assembly, a plurality of which is placed around a cylinder (12) of a grinding machine. Each assembly comprises a grindstone unit (1) and a metal fixture (16). The grindstone holder (3) has on one side face a positioning cutout (7), and a thinly cut grindstone (2) attached to one end of the grindstone holder (3). The metal fixture (16) has a metal body (17) having a protrusion (18) adapted to fit in the cutout (7) and a locking bolt (21).

Abstract: A grinding wheel fixture (S) for the accommodation of a dressable grinding wheel (5) is provided with an annular groove (6, 6′, 8) for the accommodation of balancing lugs (9, 10), the balancing lugs (9, 10) being for manual balancing purposes displaceable and fixable within the annular groove (6, 6′, 8) with respect to their angular position. The balancing lugs (9, 10) are divisible into at least two groups, the groups being displaceable and fixable in any desirable angular position independent of each other. The grinding wheel fixture permits a simple, quick, and nevertheless highly exact dynamic balancing, whereby repeated re-measurement and repeated correction are no longer necessary.

Abstract: A grinding unit assembly, a plurality of which is placed around a cylinder (12) of a grinding machine. Each assembly comprises a grindstone unit (1) and a metal fixture (16). The grindstone holder (3) has on one side face a positioning cutout (7), and a thinly cut grindstone (2) attached to one end of the grindstone holder (3). The metal fixture (16) has a metal body (17) having a protrusion (18) adapted to fit in the cutout (7) and a locking bolt (21).

Abstract: The invention relates to a saw blade for cutting, slotting or grooving natural rock and synthetic construction materials, such as concrete, reinforced concrete, brick, asphalt or the like. The saw blade has a sawblade body and a plurality of segments which are arranged on the circumference of the sawblade body and are provided with radially projecting lugs which each bear an abrasive body. The segments are attached to the sawblade body by means of a thermally decoupling tongue-and-groove joint.

Abstract: A rotatably mounted tool for surface working of construction blocks, e.g. concrete or granite blocks, as well as roadways, incorporates a plurality of flat, planar surfaces which are circumferentially spaced apart around the outer, peripheral surface of the generally cylindrical tool drum. A plurality of abrasive mounting shoes are removably secured to the flat drum surfaces, with flat surfaces on the shoes evenly seated in conforming relation to the flat drum surfaces. Abrasive segments are selectively affixed to each mounting shoe in a desired number, size, and spacing to carry out the desired surface working operation, i.e., cutting grooves in road surfaces or smooth finishing concrete blocks. The arrangement and orientation of the abrasive mounting shoes on the tool drum may also be varied in order to achieve full work surface coverage for particular applications.

Abstract: A unitary composite abrasive disc for one-pass grinding and finishing of a workpiece comprising a flexible epoxy rim bonded to a rigid core.

Abstract: A cutting tool insert includes a cutting tip mounted into a first recess of a molded hard refractory compound insert having a second recess of preselected size and shape for locating the insert to a cutting tool. A preferred cutting tip is a diamond and a preferred hard refractory compound is a tungsten carbide with a cobalt binder.

Abstract: An elastomeric mount or band is provided for circumferential placement about a bonded abrasive segment of the type generally used to form a segmented grinding wheel assembly of a rotary surface grinder. The band serves to cushion the segment relative to a chuck of the grinder. The band is provided with a predetermined original or untensioned circumference and is elastically deformable or stretchable to a larger circumference within a predetermined range of circumferences. This ability to elastically deform facilitates installation onto the segment and enables a single band to be used in combination with segments of various size. The band is preferably installed over a segment having a circumference greater than the band's original circumference so that tension in the installed band serves to mechanically fasten the band in position thereon. This mechanical fastening enables a user to easily move the band to various locations on the segment as desired.

Abstract: A combined cutting/grinding tool comprises a grinding wheel with an exterior circumferential grinding surface for profiling an object surface of a product to be manufactured. The grinding surface includes an abrasive grit. A profile is formed in the grinding surface for grinding a corresponding profile into the object surface. A plurality of inserts are inserted into a plurality of slots formed in the grinding surface. A cutting portion of each insert extends radially and integrally outward from the grinding surface to cut detail into the object surface of the part to be manufactured.

Abstract: A grinding apparatus of a welded residue on a seam of a rail head portion including a rail, a machine table capable of moving forward and backward along the rail, an apparatus base erected on a distal end side of the machine table, a first support disk board mounted on the apparatus base and capable of moving vertically by electric power or an operator's hand, a second support disk board mounted on the first support disk board and capable of moving vertically by electric power or an operator's hand, a grinding drive motor mounted on a front surface of the second support disk board and capable of rotating about a horizontal axis, a cutter unit mounted on the front surface of the second support disk board and capable of rotating about the horizontal axis, the cutter unit being operatively connected to the grinding drive motor, an engaging portion formed on the cutter unit and adapted to engage a head portion of the rail, and a grinding edge disposed on the engaging portion and adapted to grind an upper surface,

Abstract: A polishing pad comprises a carrier and layer of a non-porous thermoplastic polymer secured to a surface thereof and containing a mass of discrete abrasive particles, comprising diamond or cubic boron nitride, uniformly dispersed therein. The abrasive particles have a particle size of up to 500 microns and are present in the layer in a concentration of up to 30 volume percent. The layer presents an abrasive polishing surface. The abrasive layer may also comprise a plurality of spaced strips secured to a surface of the carrier and each strip presents an abrasive polishing surface.

Abstract: A diamond impregnated saw blade of the type used in dicing saws is adapted for mounting on a high cooling flange or standard flange hubs and useful for cutting very hard objects. The saw blade is made in the form of an annular ring comprising a homogenous mixture of diamonds held in situ by a binder material and is characterized by alternately spaced raised teeth and recessed cooling grooves through which a stream of cooling fluid is directed into the kerf of an object being cut as well as on all cutting surfaces of the cutting saw blade.

Abstract: An abrasive tool such as a drill bit has a body with a working face (10). Undercut recesses (12) are formed in the working face (10). Cutting inserts (16) which present working ends (20) are located in the recesses (12). Locking means (24) in the recesses engage between the undercuts (14) and formations (22) on the inserts (16). This locks the inserts (16) against withdrawal from the recesses (12).