A machine tool for multiple working for material removal from surfaces of bodies including a working station in which a plurality of rotary tools are positioned around a feed trajectory of said bodies; and guide means in which the bodies to be worked are made to translate one after another along said feed trajectory with a predetermined orientation position. At least one pair of rotary tools of said working station, intended to interact with the surfaces to be worked, inside slits in said bodies, in combination with each other and with guide means provided with partitions, help to keep said bodies in position during their related transit through said working station.

A machine tool for multiple working for material removal from surfaces of bodies including a working station in which a plurality of rotary tools are positioned around a feed trajectory of said bodies; and guide means in which the bodies to be worked are made to translate one after another along said feed trajectory with a predetermined orientation position. At least one pair of rotary tools of said working station, intended to interact with the surfaces to be worked, inside slits in said bodies, in combination with each other and with guide means provided with partitions, help to keep said bodies in position during their related transit through said working station.

A continuous abrasive product includes predetermined length and number of predetermined kind of abrasive areas on an abrasive surface, A method for abrading a workpiece, includes arranging an abrasive area of an abrasive product at an abrading zone for abrading the workpiece, and after abrading, replacing the abrasive area at the abrading zone with an another abrasive area of the abrasive product for abrading the workpiece according to a subsequent abrading phase. The used abrasive area is replaced by an unused abrasive area of a different kind. The abrasive product comprises a continuous longitudinal abrasive material including at least two longitudinally sequential different abrasive areas having different kind of abrasive properties.

A substrate warpage correction method according to this disclosure corrects warpage of a substrate without performing a process on a front surface of the substrate. The substrate warpage correction method includes a surface roughening of performing a surface roughening process on a rear surface of the substrate using a surface roughening processing apparatus configured to be able to perform the surface roughening process on the rear surface of the substrate, to form grooves in the rear surface to thereby correct the warpage of the substrate.

A substrate warpage correction method according to this disclosure corrects warpage of a substrate without performing a process on a front surface of the substrate. The substrate warpage correction method includes a surface roughening of performing a surface roughening process on a rear surface of the substrate using a surface roughening processing apparatus configured to be able to perform the surface roughening process on the rear surface of the substrate, to form grooves in the rear surface to thereby correct the warpage of the substrate.

A cutting insert (112) comprising a top surface (118), a bottom surface (120), and side surfaces (122) spanning there-between, said side surfaces (122) comprising one or more feed-facing side surfaces (122a) and one or more radial-facing side surfaces (122b). The top surface (118) is formed with one or more linear grooves, each constituting a chip breaker (125) and being disposed parallel to and adjacent one of said feed-facing side surfaces (122a). The chip breaker (125) is characterised by a constant profile along the entire length of its respective feed-facing surface (122a). Each of said feed-facing side surfaces (122a) is disposed at an acute feed-angle ( feed) with respect to the top surface (118), and each of said radial-facing side surfaces (122b) being disposed at an acute radial-angle ( radial) with respect to the top surface (118), the feed-angle ( feed) being greater than said radial-angle ( radial).

A cutting insert (112) comprising a top surface (118), a bottom surface (120), and side surfaces (122) spanning there-between, said side surfaces (122) comprising one or more feed-facing side surfaces (122a) and one or more radial-facing side surfaces (122b). The top surface (118) is formed with one or more linear grooves, each constituting a chip breaker (125) and being disposed parallel to and adjacent one of said feed-facing side surfaces (122a). The chip breaker (125) is characterised by a constant profile along the entire length of its respective feed-facing surface (122a). Each of said feed-facing side surfaces (122a) is disposed at an acute feed-angle ( feed) with respect to the top surface (118), and each of said radial-facing side surfaces (122b) being disposed at an acute radial-angle ( radial) with respect to the top surface (118), the feed-angle ( feed) being greater than said radial-angle ( radial).

An object of the present invention is to provide an ultrasonic bonding tool capable of bonding a lead wire, without any trouble, even to a surface of a thin-film base having a plate thickness of 2 mm or less such as a glass substrate. In the present invention, a surface portion of a chip portion (1c) of an ultrasonic bonding tool (1) used in an ultrasonic bonding apparatus has a plurality of planar portions (10) formed so as to be separated from one another, and a plurality of concavities (11) formed between the plurality of planar portions. Each of the plurality of planar portions (10) has a flatness of 2 m or less.

An object of the present invention is to provide an ultrasonic bonding tool capable of bonding a lead wire, without any trouble, even to a surface of a thin-film base having a plate thickness of 2 mm or less such as a glass substrate. In the present invention, a surface portion of a chip portion (1c) of an ultrasonic bonding tool (1) used in an ultrasonic bonding apparatus has a plurality of planar portions (10) formed so as to be separated from one another, and a plurality of concavities (11) formed between the plurality of planar portions. Each of the plurality of planar portions (10) has a flatness of 2 m or less.

An apparatus for cutting grooves in a ground surface includes a wheeled vehicle with a tool carrier connected to the wheeled vehicle. The tool carrier is rotatable about an axis parallel to the direction of travel of the vehicle and perpendicular to the direction of travel of the vehicle. A grinding tool for cutting grooves in a ground surface is rotatably mounted to the tool carrier. The grinding tool may be movable laterally relative to the vehicle. A rotatable cam is configured so that rotation of the cam causes pivotal movement of the tool carrier relative to the forward frame. Rotation of the cam moves the grinding tool into and out of engagement with the ground surface.