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 adapter clip to be used to mate an abrasive support plate to the drive plate of a floor finishing machine used to grind and/or polish concrete and stone flooring is designed with an internal aperture shaped to conform to and clip onto a protuberance on an upper surface of an abrasive support plate and an external shape to mate with a mounting recess formed on the machine's drive plate.

A grinding tool and a manufacturing method thereof are disclosed. The grinding tool includes a plurality of thin teeth (2) which are sequentially spliced and stacked to form an annular structure, wherein every two adjacent thin teeth (2) are fixedly connected, and a groove body (4) is formed between every two adjacent thin teeth (2). The narrower and the more the groove bodies of the grinding tool are, the better the cooling effect is, thus the better the chip-removal effect is. Meanwhile, the manufacturing method for the grinding tool features a machining process having low difficulty and is easy for mass production, thereby facilitating the high-speed and high-efficiency machining of grinding tools with an organic bond and an inorganic bond.

An abrasive article including a body comprising abrasive segments coupled to a major planar surface of a substrate, where a first abrasive segment comprises a first wear life index (w1) that is different than a second wear life index (w2) of the second abrasive segment by at least 5%.

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 abrasive article can include an abrasive component including a body. The body can include a bond matrix and abrasive particles contained in the bond matrix. In an embodiment, the body can include an interconnected phase extending through at least a portion of the bond matrix. The body can include a discontinuous phase including a plurality of discrete members. At least one of the discrete member can include a macroscopic pore. In another embodiment, the body can include a porosity of at least 15 vol % for a total volume of the body.

An abrasive article can include an abrasive component including a body. The body can include a bond matrix and abrasive particles contained in the bond matrix. In an embodiment, the body can include an interconnected phase extending through at least a portion of the bond matrix. The body can include a discontinuous phase including a plurality of discrete members. At least one of the discrete member can include a macroscopic pore. In another embodiment, the body can include a porosity of at least 15 vol % for a total volume of the body.

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.

A grinding wheel includes a plurality of grinding stone groups arranged in an annular array, each of the grinding stone groups including at least three grinding stone segments having different thicknesses which include a smallest thickness, an intermediate thickness, and a largest thickness. The grinding stone segments in each of the grinding stone groups are successively arranged in the order of the grinding stone segment having the smallest thickness, the grinding stone segment having the intermediate thickness, and the grinding stone segment having the largest thickness, with uniform gaps left therebetween. The grinding stone segments in the grinding stone groups have respective radially inner edges aligned with each other in an annular shape.

A grinding wheel includes an annular base having a free end portion and a plurality of segment grindstones fixed on the free end portion of the annular base in a state of being spaced from one another in a circumferential direction. The plurality of segment grindstones are divided into a plurality of grindstone groups each including a predetermined number of segment grindstones. Each of the segment grindstones included in each of the grindstone groups has a grinding surface formed into a rectangular shape having a long side and a short side. The segment grindstones of the grindstone group are sequentially fixed on the free end portion of the annular base from an outer circumferential side toward an inner circumferential side such that directions in which the long sides of the segment grindstones extend are changed from the circumferential direction to a diametric direction of the free end portion.