A cutting edge configuration of a cutting tool for performing a cutting process on a surface (21) of a workpiece (19), the cutting tool including a rake face (3) provided with first and second cutting edges (11, 13), the cutting tool being moved relative to the surface-to-be-cut (21) with the first and second cutting edges (11, 13) cutting thereinto to thereby perform the cutting process, wherein the first cutting edge (11) is positioned ahead of the second cutting edge (13) in a cutting direction (z-direction) of the cutting tool to provide the rake face (3) with a feed-direction (y-direction) rake-angle, and the cutting tool is fed in a direction from a side of the second cutting edge (13) to a side of the first cutting edge (11).

The present invention provides a grooving tool for machining the surface of a polymeric foam article, such as a chemical mechanical (CMP) polishing pad, the grooving tool comprising a flat bed platen on which the article sits, a grooving tool frame having a front face positioned parallel to and facing the flat surface of the polymeric foam article on which front face is contained one or more cutting tool teeth arranged in a predetermined direction and with a constant pitch. Each cutting tool tooth has a non-cutting shoulder where it joins the grooving tool frame (i) a groove cutting face that forms a rake angle ranging from 2 to 80, (ii) a chip ejection face located on the top of the tooth between the non-cutting shoulder and the groove cutting face and (iv) a shouldering radius transitioning from the cutting tool tooth to the non-cutting shoulder.

The present invention provides a grooving tool for machining the surface of a polymeric foam article, such as a chemical mechanical (CMP) polishing pad, the grooving tool comprising a flat bed platen on which the article sits, a grooving tool frame having a front face positioned parallel to and facing the flat surface of the polymeric foam article on which front face is contained one or more cutting tool teeth arranged in a predetermined direction and with a constant pitch. Each cutting tool tooth has a non-cutting shoulder where it joins the grooving tool frame (i) a groove cutting face that forms a rake angle ranging from 2 to 80, (ii) a chip ejection face located on the top of the tooth between the non-cutting shoulder and the groove cutting face and (iv) a shouldering radius transitioning from the cutting tool tooth to the non-cutting shoulder.

A portable pipe threader includes a stand upon which a pipe is supported, a carriage supported by the stand, and a plurality of pipe threading tools coupled to the carriage and selectively operable to perform work on the pipe. The portable pipe threader further includes a drive assembly mounted to the stand including a brushless direct current (DC) motor operable to provide torque to one of the pipe or a selected one of the pipe threading tools to rotate the pipe and the selected one of the pipe threading tools relative to each other, and a battery pack supported by the stand in selective electrical communication with the motor to provide electrical power to the motor.

A brake rotor includes an outer surface; first and second opposing braking surfaces, each bounded by the outer surface to form first and second opposing braking surface edges. A plurality of concentric grooves are formed on the first and/or second braking surfaces.

A brake rotor includes an outer surface; first and second opposing braking surfaces, each bounded by the outer surface to form first and second opposing braking surface edges. A plurality of concentric grooves are formed on the first and/or second braking surfaces.

A rotary boring tool with detachable inserts, including a rotating insert carrier body including cartridges holding detachable cutting inserts configured to machine a cylinder barrel by axial movement of the tool in the barrel, and including a first cutting insert configured to rough-cut grooves in the material to be machined, a second insert configured to finish the grooves roughly cut by the first insert, and a third levelling insert configured to level rough material generated by the first two inserts.

A rotary boring tool with detachable inserts, including a rotating insert carrier body including cartridges holding detachable cutting inserts configured to machine a cylinder barrel by axial movement of the tool in the barrel, and including a first cutting insert configured to rough-cut grooves in the material to be machined, a second insert configured to finish the grooves roughly cut by the first insert, and a third levelling insert configured to level rough material generated by the first two inserts.

A workpiece at least includes a first outer surface, a second outer surface and a third outer surface. The third outer surface intersects the first outer surface and the second outer surface to define an extrusion-acting portion having an extruding portion. The workpiece can be used to machine a cutter in an entire or a trimmed portion thereof. Thereupon, rapid production of cutters by molding machines can be realized, and blades of the molding machine for machining the cutter become replaceable. While a blade portion is machining, the extrusion-acting portion is applied to support and guide the workpiece, such that the surface machined by the blade portion can be extruded and polished simultaneously. Thus, machining qualities of the cutter, including finish, straightness and roundness, manufactured by applying the workpiece for the molding machine can be significantly improved.

A workpiece at least includes a first outer surface, a second outer surface and a third outer surface. The third outer surface intersects the first outer surface and the second outer surface to define an extrusion-acting portion having an extruding portion. The workpiece can be used to machine a cutter in an entire or a trimmed portion thereof. Thereupon, rapid production of cutters by molding machines can be realized, and blades of the molding machine for machining the cutter become replaceable. While a blade portion is machining, the extrusion-acting portion is applied to support and guide the workpiece, such that the surface machined by the blade portion can be extruded and polished simultaneously. Thus, machining qualities of the cutter, including finish, straightness and roundness, manufactured by applying the workpiece for the molding machine can be significantly improved.