A floor polishing armature including an inner ring having an inner ring upper surface and an inner ring lower surface, an outer ring, spokes extending between the inner ring and the outer ring, a disc retainer formed on the outer ring, a spoke opening extending from the inner ring upper surface to the inner ring lower surface, and a disc insert retained in the disc retainer. The disc is insert adapted for floor treatment. The spoke opening extends to the disc retainer. The disc insert is released by pressing through the spoke opening. Optionally, airflow openings are formed between the spokes. Spoke indents are preferably formed on an underside of the spokes between the inner ring and the disc retainer. The disc inserts and the arc inserts are both retained by interference fit.

Metal bond abrasive articles and methods of making metal bond abrasive articles via a focused beam are disclosed. In an aspect, a metal bond abrasive article includes a metallic binder material having abrasive particles retained therein, where the abrasive particles have at least one coating disposed thereon. The coating includes a metal, a metal oxide, a metal carbide, a metal nitride, a metalloid, or combinations thereof, and the at least one coating has an average thickness of 0.5 micrometers or greater. The metal bond abrasive article includes a number of layers directly bonded to each other. Metal bond abrasive articles prepared by the method can include abrasive articles having arcuate or tortuous cooling channels, abrasive segments, abrasive wheels, and rotary dental tools. Further, methods are provided, including receiving, by a manufacturing device having one or more processors, a digital object comprising data specifying a metal bond abrasive article; and generating, with the manufacturing device by an additive manufacturing process, the metal bond abrasive article based on the digital object. A system is also provided, including a display that displays a 3D model of a metal bond abrasive article; and one or more processors that, in response to the 3D model selected by a user, cause a 3D printer to create a physical object of the metal bond abrasive article.

The invention relates to a processing section 1 and an adapter system 10 of a floor-processing machine. The processing section 1 comprises a base body 2 with a processing side 3 and a mounting side, wherein the mounting side is arranged on the opposite side of the processing side 3 of the base body 2. The mounting side comprises at least one first mounting element for detachably fastening the processing section to the adapter system. The processing side 3 is formed as a closed processing surface 5. The adapter system 10 has a receiving side 11 which comprises at least one receptacle 12. The receptacle 12 comprises at least one second mounting element for detachably fastening the processing section 1 in the receptacle 12. Finally, the invention relates to a floor-processing machine and a tool.

An apparatus for abrading a surface is provided. The apparatus includes: a framework with a motor housed therein; a chassis housing a drivetrain, the drivetrain including a drive pulley operative connected to the motor, a plurality of tool assembly pulleys, a belt operatively connecting the drive pulley and the plurality of tool assembly pulleys; a plurality of tool assemblies operatively connected to the drive pulley and the plurality of tool assembly pulleys, each tool assembly including: a tool holder, a tool plate comprising a tool segment with an abrading surface, wherein the tool holder and tool plate are detachably connected by a plurality of equidistantly spaced pins, wherein the number of pins is a multiple of three.

The present disclosure describes a chemical mechanical planarization system that includes a pad on a rotating platen, a wafer carrier configured to hold the wafer surface against the pad and apply pressure to the wafer, a slurry dispenser configured to dispense slurry on the pad, and a conditioning wheel configured to condition the pad. The conditioning wheel further includes a base and one or more flexible structures attached to the base with each flexible structure having an elastic body configured to exert a downforce on a feature of the pad, where the downforce is proportional to the height of the feature.

A pad conditioner includes a carrier, at least one abrasive element, and a spacer. The carrier includes a surface with an exposed region and a plurality of mounting regions. The abrasive element is disposed on the mounting region of the carrier, and at least one abrasive element has a working surface including a plurality of features each having a distal end. The spacer is disposed on the surface of the carrier and covers at least a portion of the exposed region. The spacer has a first surface and a second surface, wherein the second surface is opposed to the first surface and adjacent to the surface of the carrier. The distance D1 between the distal end of the highest feature of the at least one abrasive element and the surface of the carrier is greater than the distance D2 between the first surface of the spacer and the surface of the carrier.

An abrasive segment can include an inner segment portion, an outer segment portion, and a central segment portion connected thereto. The inner segment portion can include an inner circumferential wall and an outer circumferential wall. Leading and trailing radial sidewalls can extend between the inner circumferential wall and the outer circumferential wall opposite each other. The outer segment portion can include an inner circumferential wall and an outer circumferential wall. Leading and trailing radial sidewalls can extend between the inner circumferential wall and the outer circumferential wall opposite each other. The central segment portion can include a leading radial sidewall and a trailing radial sidewall. The leading radial sidewall of the central segment portion can establish an acute angle, , with respect to the outer circumferential wall of the inner segment portion and an obtuse angle, , with respect the inner circumferential wall of the outer segment portion.

A grinding wheel which includes a plurality of vitrified bonded grindstone chips arranged on an outer periphery of an annular base metal thereof, and is configured to grind a workpiece with use of the grindstone chips while rotating the annular base metal, wherein each of the vitrified bonded grindstone chips is configured in such a manner that, in a rectangular parallelepiped including a rectangular grinding surface which is placed on an opposite side of the annular base metal and grinds the workpiece and four side surfaces adjacent to grinding surface, four ridge portions each of which is provided between the side surfaces are C-chamfered, each long side of the grinding surface is arranged along the outer periphery of the annular base metal, and each of the four ridge portions is C-chamfered in a range which is or more of a length of each short side of the grinding surface.

An annular grindstone includes a grindstone portion including a binding material, and abrasive grains which are dispersed into the binding material to be fixed, in which the binding material contains a nickel-iron alloy. Preferably, a contained ratio of iron in the nickel-iron alloy is in a range of 5 wt % or more to less than 60 wt %. More preferably, a contained ratio of iron in the nickel-iron alloy is in a range of 20 wt % or more to 50 wt % or less. Preferably, the annular grindstone includes the grindstone portion only. In addition, the annular grindstone further includes an annular base including a grip portion, in which the grindstone portion is exposed at an outer peripheral edge of the annular base.

An apparatus for abrading a surface is provided. The apparatus includes: a framework with a motor housed therein; a chassis housing a drivetrain, the drivetrain including a drive pulley operative connected to the motor, a plurality of tool assembly pulleys, a belt operatively connecting the drive pulley and the plurality of tool assembly pulleys; a plurality of tool assemblies operatively connected to the drive pulley and the plurality of tool assembly pulleys, each tool assembly including: a tool holder, a tool plate comprising a tool segment with an abrading surface, wherein the tool holder and tool plate are detachably connected by a plurality of equidistantly spaced pins, wherein the number of pins is a multiple of three.