The present disclosure relates to a cutter bar for chopping machines. The cutter bar includes a cutter bar body that defines an edge groove. The edge groove includes a groove bottom and a groove sidewall. The groove sidewall is formed by the material of the cutter bar body. A wear protection structure extends along a surface of the cutter bar body from the edge groove. The wear protection structure is built up on the surface of the cutter bar body as an additively manufactured metal powder application layer. At least one carbide strip is secured to the edge groove and forms the cutting edge. The carbide strip can be fastened to the edge groove by means of a bonding agent, such as solder or adhesive.

A paper cutter for a printer adapted to being integrated into an electronic device. The paper cutter is transparent and has at least some of the following optical properties: a ray arriving at a first viewing angle is at least partly refracted to arrive on said paper, and a ray arriving at a second viewing angle is totally reflected.

A cutter bar has a cutter body with a substantially rectangular cross section formed by an upper face, two side faces and a lower face. The upper face together with at least one side face defines a cutting edge, which is formed by one or more hard metal profile strips fastened in a groove in the cutter body. The wall of the groove which adjoins the upper face of the cutter body encloses with the upper face of the cutter body an angle less than 90, preferably 89 to 15, particularly preferably 80 to 40. The wall of the groove which adjoins the lateral face of the cutter body encloses with the lateral face of the cutter body an angle less than 90, preferably 89 to 15, particularly preferably 80 to 40. The hard metal profile strip or hard metal profile strips is or are positively inserted in the groove.

A cutting element, in particular for abrasive cut material, is provided that includes a substrate that defines at least one cutting wedge which is formed by first and second wedge surfaces that intersect along a wedge edge. A cutting layer that extends over the first wedge surface and defines a cutting edge which lies on the wedge edge when new. The wear resistance of the cutting layer is greater than wear resistance of the substrate. The cutting layer is configured to define a blade-shaped protrusion that projects beyond the wedge edge due to wear of the substrate in the area of the second wedge surface to provide a self-resharpening cutting edge. The cutting layer or part thereof is formed by means of melt-metallurgical modification of an edge zone of the substrate by in-situ precipitation of finely dispersed inherent hard phases from partial melting of the edge zone of the substrate.

Provided is a blade dicing device for wafers that cuts (dices) a wafer with the grit on a cutting blade and separates the wafer into individual chips, and that can minimize process defects when dicing compound semiconductor wafers made of high-hardness materials such as SiC. The device includes a body, a cutting blade protruding from the outer periphery of the body, and grit bonded and attached to the outer periphery of the cutting blade and cutting a wafer, wherein the length of the grit is 2 m to 4 m.

A diamond wire cutting machine includes a spool on which a diamond wire is wound. The spool includes two end flanges having respective frustoconical faces adapted, by cooperation of shape with frustoconical faces of two adapters, to center the spool on an axis of revolution. A drum extends from one of the end flanges to another of the end flanges. The drum includes a cylindrical outer face of circular cross-section on which the diamond wire is wound. The drum defines a central hole through which a drive shaft passes. The drum and the end flanges form a single plastic block.

A diamond-wire dicing machine includes a machine chassis, which includes a bottom support. A base extends upwards from the bottom support. A plurality of tension regulation arms are arranged on the base and are each provided with a tension roller. A plurality of guide rollers are also arranged on the base. The tension rollers and the guide rollers are spaced from each other. A plurality of wire winding/releasing devices are respectively arranged at two sides of the base and are each provided with a wire winding/unwinding wheel. A diamond wire extends through the tension rollers, the guide rollers, and the wire winding/unwinding wheels, and the surface of the diamond wire is provided with diamond particles. The wire winding/releasing devices are operable to take up and release the diamond wire for reciprocally moving the diamond wire to bring new ones of the diamond particles to contact and cut a wafer.

A debarker knife tip may be utilized in a debarker to remove bark from logs that pass through the debarker. The debarker knife tip may include a self-sharpening knife tip as a result of a wear material that is utilized to form one or more layers of the wear material to provide self-sharpening effect. In use. a portion of the self-sharpening knife tip of the debarker knife at a first cutting edge of the wear material may deteriorate away exposing a second cutting edge due to the self-sharpening knife effect. This self-sharpening nature of the wear material allows for the debarker knife tip to remove bark from logs that pass through the debarker in a more consistent manner for a longer period of time over the usable life span of the debarker knife tip.

The present disclosure provides a cutter structure for cutting polylactic acid fiber filter rods and relates to the technical field of cigarette preparation. The cutter structure includes a cutter shaft and cutters, wherein the cutters include a middle cutter and side cutters, the middle cutter is round, and cutting edges of the side cutters are flush with an edge of the middle cutter; hardness of the middle cutter is higher than that of the side cutters, so that the tow middle cutter can be conveniently used for cutting lized tows that have been crystallized in the polylactic acid fiber filter rods; and the side cutters are detachably arranged on side faces of the middle cutter and used for preventing glyceryl triacetate from adhering to the side faces of the middle cutter. The cutter structure provided by the present disclosure is simple in arrangement, the two kinds of cutters are cooperatively arranged, the situation that blades are damaged when the middle cutter collides with random crystallization points in polylactic acid fiber tows is avoided due to high hardness of the middle cutter, the side cutters on the side faces can protect the middle cutter against glyceryl triacetate adhesion, the side cutters are detachably arranged, so as to be conveniently replaced, and therefore the whole structure has higher efficiency and stability for cutting the polylactic acid fiber filter rods.