摘要:
The invention relates to a blade which is suitable for cutting various solid, viscous, and hard-wearing materials. The blade comprises a plate, on which the cutting edge is configured by the formation of a bevelled edge of the broad surface of the plate. The teeth are provided with hollows that lie at a distance from the points of said teeth on the bevelled edge of the broad surface of the plate.
摘要:
The invention relates to a method for producing metal items from metal blanks (1). The metal blank is positioned between two roller surfaces of two rollers (5), these roller surfaces being opposed and having means for being rolled out against each other from a starting position to an end position. A negative mold of the metal item to be produced is created with at least one recess in a roller surface. The process of positioning the metal blank in the starting position of the rollers takes place in the area of the recess. The rollers are then rolled out against each other from the starting position to the end position, the metal blank being shaped into the metal item by cold-forming as the rollers roll out; and the formed metal item is removed from the rollers. The invention is characterized in that the recess is configured with a variable depth curve in the directions parallel to a roller axis, at least in a partial area, and in the rolling-out direction of the rollers.
摘要:
The inventive method consists in chapping a plate and deforming the edge thereof by ultrasonic forging. Said edge is placed between conic surfaces of hammer heads used for forming a wedge edge on the plate. The end of the plate is eased during the chapping thereof. Said method can consist in cutting the blank part from a semimanufactured plate. The cut surface is transformed into a cutting edge in the case of a forging clearance formed by at least one forging die of the ultrasonic forging device. The cut surface of the blank part is transformed into the cutting edge by means of the die. Prior to transforming the cut surface into the cutting edge, the blank part is treated in such a way that it is provided with a rounded cross section along the entire cut surface. The end of the blank part is embodied in the rounded form.
摘要:
The invention relates to a method for producing metal items from metal blanks. The metal blank is positioned between two roller surfaces of two rollers, these roller surfaces being opposed and having means for being rolled out against each other from a starting position to an end position. A negative mold of the metal item to be produced is created with at least one recess in a roller surface. The process of positioning the metal blank in the starting position of the rollers takes place in the area of the recess. The rollers are then rolled out against each other from the starting position to the end position, the metal blank being shaped into the metal item by cold-forming as the rollers roll out; and the formed metal item is removed from the rollers. The invention is characterized in that the recess is configured with a variable depth curve in the directions parallel to a roller axis, at least in a partial area, and in the rolling-out direction of the rollers.
摘要:
The method of the invention includes forming a plate and deforming, by ultrasonic forging, a plate side located between the conical surfaces (34, 35) of strikers (2, 3) for the purpose of forming a wedge- shaped edge on the plate (1) . The strikers are rotated around their longitudinal axes (Ll, L2) . The device of the invention is provided with a drive for rotating the strikers (2, 3) . On the working surface of the striker (2, 3) a recess is made, the generatrix of which corresponds to the form of the wedge-shaped edge surface . The invention enables to shorten the time of treatment and improve the quality of the cutting edge surface.
摘要:
The invention relates to a blade which is suitable for cutting various solid, viscous, and hard-wearing materials. The blade comprises a plate, on which the cutting edge is configured by the formation of a bevelled edge of the broad surface of the plate. The teeth are provided with hollows (7) that lie at a distance from the points of said teeth on the bevelled edge of the broad surface of the plate.