A process unit and methods are disclosed. One process unit including a pultrusion unit having a pultrusion channel, with the pultrusion channel being limited by at least one shaping wall. The process unit further includes an extrusion unit having an extrusion channel and an opening for removing the extrudate out of the extrusion channel, a cutting unit having a moving cutting element for cutting off the extrudate with the moving cutting element, and a conveying device for conveying a raw extrudate from the pultrusion unit into the extrusion unit. The cutting unit comprises a component that can be caused to move in a rotational manner and the component is mechanically coupled to the cutting element by a mechanical coupling device, such that the rotational movement of the component determines the movement of the cutting element.

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.

A tension knife includes an elongate knife body with a thin, flat profile. The tension knife defines first and second mounting points at opposing ends of the knife body. The knife body has a characteristic width across a length of the knife body between the first and second mounting points. The characteristic width of the knife body defines a centerline between a leading edge of the knife body and a trailing edge of the knife body. One or more of the first and second mounting points has a focus between the centerline of the knife body and the leading edge. A frame can be configured to support and tension the tension knife to form a tension knife assembly. Clamp blocks can be used to mount the tension knife to the frame at the first and second mounting points, where one or more of the clamp blocks is configured to rotate with respect to the frame to tension the leading edge of the tension knife.

Provided is a cutting implement which is easily ground or which needs no grinding and is safe. The cutting implement is a cutting implement including an acting portion 3 that cuts an object to be cut, the cutting implement configured such that the acting portion 3 includes a main body portion 4 and a small thickness portion 5 whose thickness is smaller than the thickness of the main body portion 4 and the small thickness portion 5 has a width of 2.5 to 20 mm and a thickness of 0.1 to 0.5 mm.

Provided is a cutting implement which is easily ground or which needs no grinding and is safe. The cutting implement is a cutting implement including an acting portion 3 that cuts an object to be cut, the cutting implement configured such that the acting portion 3 includes a main body portion 4 and a small thickness portion 5 whose thickness is smaller than the thickness of the main body portion 4 and the small thickness portion 5 has a width of 2.5 to 20 mm and a thickness of 0.1 to 0.5 mm.

A knife is provided for a cutting device for cutting continuous rods in a manufacturing process, the knife including: a knife body having a distal end and a proximal end opposite the distal end, the knife body configured to be attached to a cutting device; and a cutting edge located at the distal end of the knife body, the cutting edge including at least two cutting edge segments, each cutting edge segment including a profile, the profile including one maximum protrusion from the knife body, and at least a portion of a second cutting edge segment of the at least two cutting edge segments protruding, from the knife body, to a greater extent than the maximum protrusion of a first cutting edge segment of the at least two cutting edge segments, from the knife body. A cutting device, and a method of manufacturing a cutting device, are also provided.

A knife assembly includes a knife blade of which a front edge is a cutting edge, a holder configured for supporting the knife blade, a clamp arranged for clamping the knife blade onto the holder, and a fastening mechanism cooperating with the clamp and the holder for securing and clamping We knife blade between the clamp and the holder with the cutting edge protruding at a front side of the knife assembly. The holder has a frontal part which is, in clamped state, in contact with a bottom side of the knife blade at a first distance from the cutting edge. The clamp has a leading edge which, in clamped state, clamps onto a top side of the knife blade and is located a second distance from the cutting edge, the second distance being smaller than the first distance.

A cutting device for cutting a pipe having a pipe wall includes an elongate carrier having a tool end which is engageable with a power tool, and a free end. The device includes a guide wheel located at the free end of the carrier, which is mounted thereon for rotation relative thereto, having a bearing surface extending parallel to a longitudinal axis of the carrier. The device also includes a cutting element having a peripheral cutting edge which is located adjacent to the guide wheel being positioned intermediate the guide wheel and the tool end. The cutting element is of greater transverse dimension than the guide wheel so that when the bearing surface bears against an internal surface of the pipe the distance between the cutting edge of the cutting element and the bearing surface enables the cutting element to cut through the pipe wall.

A cubic boron nitride (cBN)-based composite including about 30-65 vol. % cBN, about 15-45 vol. % titanium (Ti)-containing binders, about 2-20 vol. % zirconium dioxide (ZrO.sub.2), about 3-15 vol. % cobalt-tungsten-borides (Co.sub.xW.sub.yB.sub.z), and about 2-15 vol. % aluminum oxide (Al.sub.2O.sub.3).

A cutting device for cutting an initial product into a plurality of products comprises a base, a cutter seat and a cutter. The initial product includes an insulator and a plurality of groups of terminals fixed on the insulator. The base of the cutting device includes a plurality of slots arranged side by side, and a first positioning slot formed on an inner sidewall of each of the slots of the base and adapted to position one of the terminals of the initial product. The cutter seat is inserted into one of the plurality of slots and defines a blade slit. The cutter is adapted to be inserted into the blade slit to cut off the insulator of the initial product to form the product.