A structured abrasive article comprises a plurality of shaped abrasive composites disposed on and secured to a major surface of a backing. The shaped abrasive composites comprise magnetizable abrasive particles retained in an organic binder. On a respective basis, each of the magnetizable abrasive particles has a ceramic body with a magnetizable layer disposed on at least a portion thereof. Methods of making and using the structured abrasive articles are also disclosed.

In some examples, an abrasive particle transfer system including a production tool comprising a dispensing surface and a back surface opposite the dispensing surface, wherein the production tool has cavities formed therein, wherein, on a respective basis, each of the cavities extends from a first opening at the dispensing surface through the production tool to a second opening at the back surface, and wherein the second opening is smaller than the first opening; abrasive particles removably disposed within at least some of the cavities such that a portion of each particle protrudes from the back surface through the second opening; and a transfer roll having an outer surface, wherein the production tool is guided along a web path such that the portion of the abrasive particles protruding from the back surface of the production tool contacts the outer surface of the abrasive particle transfer roll to displace the abrasive particles.

Embodiments of the invention relate generally to overmolded protective leaching masks, and methods of manufacturing and using the same for leaching superabrasive elements such as polycrystalline diamond elements. In an embodiment, a protective leaching mask assembly includes a superabrasive element including a central axis and a superabrasive table, and a protective mask overmolded onto at least a portion of the superabrasive element. The protective mask includes a base portion and at least one sidewall extending from the base portion and defining an opening generally opposite the base portion. The at least one sidewall includes an inner surface configured to abut with a selected portion of the superabrasive element being chemically resistant to a leaching agent and an outer surface sloping at an oblique angle relative to the central axis.

A method of fabricating a polishing layer of a polishing pad using an additive manufacturing system, the method including depositing multiple successive layers by droplet ejection over an underlying layer, including dispensing a polishing pad precursor to first regions corresponding to partitions of the polishing pad, dispensing a first sacrificial material to second regions abutting the first regions such that the first sacrificial material lines sidewalls of the partitions, dispensing a second sacrificial material of different composition from the first sacrificial material to third regions corresponding to spaces between the first regions and second regions in the polishing pad, and curing at least the polishing pad precursor. The second regions and third regions correspond to grooves of the polishing pad. The multiple successive layers provide a body. The method further includes removing the first and second sacrificial material from the body to provide the polishing pad.

A mounting adapter for mounting a surface processing tool having a rotational or longitudinal axis to at least one spider arm of a rotatable spider assembly of a surface processing apparatus, the spider arm having a leading side and a trailing side as a function of the direction of rotation of the spider assembly. The mounting adapter has a first element for removably attaching the adapter to the spider arm and a second element positioned circumferentially offset behind the first element for positioning the rotational or longitudinal axis of a surface processing tool circumferentially offset behind the trailing side of the spider arm. The first element is an elongate handle and the second element is a planar plate which extends generally perpendicularly from the handle between one end of the handle and a point intermediate the ends of the handle.

To uniformly bring an abrasive into contact with a workpiece and to achieve desired surface roughness. A polishing tool sliding on a narrow part of the workpiece includes an abrasive retaining layer configured to allow an abrasive to be retained on a surface, and an elastic layer that is stacked on the abrasive retaining layer and is configured to press the abrasive retained in the abrasive retaining layer against the workpiece. The elastic layer is preferably elastically deformable over a sliding stroke of the polishing tool, and a driving unit that causes the polishing tool to slide on the workpiece is preferably connected to the polishing tool.

A method of fabricating a polishing layer of a polishing pad includes successively depositing a plurality of layers with a 3D printer, each layer of the plurality of polishing layers deposited by ejecting a pad material precursor from a nozzle and solidifying the pad material precursor to form a solidified pad material.

A method of manufacturing a chamfering wheel includes: forming, to be concentric by coaxial processing: a reference surface serving as one of a pair of side surfaces of a disk; a fitting hole into which a rotary shaft part is fitted in the disk; a first surface of an annular centering groove, the first surface being provided on the reference surface and used to detect a runout corresponding to a runout of an outer peripheral surface of the chamfering wheel when the chamfering wheel rotates; and a second surface of the centering groove, the second surface being provided on the reference surface, adjacent to the first surface, and used to detect a runout of the reference surface when the chamfering wheel rotates; and forming a grinding wheel portion on an outer peripheral surface of the disk.

A method is provided. The method includes preparing a surface to receive a 3D printed layer, 3D printing a conductive layer comprising a plurality of overlaid layers of conductive material to the surface, and 3D printing conductive diamonds to the conductive layer. Preparing the surface includes one or more of texturing the surface and chemically treating the surface. The texturing is performed in order to not adversely impact regularity of the surface and limit variations in the height from the surface of conductive diamonds. Chemically treating the surface reduces films or coatings that may impact adhesion between the surface and the conductive layer, without degrading the conductive layer.

An elastic emission machining apparatus includes a machining element having a non-spherical shape that is configured to spin about an axis of rotation, a tank, and a driving system. The tank has a chamber positioned to receive the machining element and a slurry comprising a mixture of a liquid and chemically reactive fine particles. The driving system is coupled to and configured to engage the machining element to spin about the axis of rotation adjacent to a surface of the workpiece to accelerate the chemically reactive fine particles through a gap between the machining element and the surface of the workpiece.