Abstract:
A cutting blade for vegetation is provided for example for use in a straw chopper or rotary mower. The blade includes a first base material and a plurality of hard surface beads of at least two different materials formed on at least one surface of the base material extending up to a cutting edge of the base material wherein the plurality of hard surface beads lie alternately side by side with touching side edges and one contains at least one different material of a different hardness relative to the other so that differential wear rates are created, and a wear profile is controlled. The softer material is burnt away at the edge by the cladding laser to form pockets so that the blade is serrated by the pockets when supplied with additional wear increasing the pockets to maintain the serrations.
Abstract:
A cutting blade for vegetation is provided for example for use in a straw chopper or rotary mower. The blade includes a first base material and a plurality of hard surface beads of at least two different materials formed on at least one surface of the base material extending up to a cutting edge of the base material wherein the plurality of hard surface beads lie alternately side by side with touching side edges and one contains at least one different material of a different hardness relative to the other so that differential wear rates are created, and a wear profile is controlled. The softer material is burnt away at the edge by the cladding laser to form pockets so that the blade is serrated by the pockets when supplied with additional wear increasing the pockets to maintain the serrations.
Abstract:
The present invention provides a razor blade steel and method of forming a razor blade from a steel which has a high hardness but is also ductile after being subjected to a heat treatment and bending process. The novel razor blade steel has Molybdenum (Mo) content of between about 1.6% to about 5% in weight percent of composition. The razor blade comprises substantially no tempered carbide, tempered carbide of about 0.1 μm or smaller, and substantially no cracks in a bent portion. One embodiment of the novel razor blade steel has a composition comprising, in weight percent, about 0.45% to about 0.55% of C, about 0.4% to about 1.0% of Si, about 0.5% to about 1.0% of Mn, and about 12% to about 14% of Cr, and further includes Mo in an amount of about 2.1% to about 2.8%.
Abstract:
A razor blade unit including a housing having a top surface, and a loop disposed on the top surface, the loop having two terminal ends and two exposed opposing edges between the two terminal ends. The loop intersects the top surface at the two terminal ends and the two terminal ends are spaced apart from each other on the top surface. At least a portion of at least one of the two exposed opposing edges has a cutting edge. The razor blade unit provides improved conformity to skin contours.
Abstract:
The invention relates to a method for producing a knife (1) with a blade (2), a bolster (3) and a handle, in particular a tang (4), forged from a single piece of flat steel material (5), wherein, before forging, the flat material (5) is upset in the region between the blade (2) and the handle or tang (4) to form a bead (6), the longitudinal axis (LW) of which is arranged transversely in relation to the longitudinal axis (LM) of the knife, and is then formed by forging to form a bolster (3), which has at least one side edge (K2) positioned obliquely in relation to the longitudinal axis (LM) of the knife, wherein the longitudinal axis (LW) of the bead (6), which later forms the bolster, is oriented obliquely in relation to the longitudinal axis (LM) of the knife (1).
Abstract:
A method for manufacturing an inner cutter for a reciprocating electric shaver, including the steps of: press-stamping a thin metal plate to obtain a thin metal plate element that has an outer contour of an unfolded inner cutter and elongated openings that extend substantially perpendicular to the direction of the reciprocating motion the inner cutter makes and further has bridging-portions formed between the elongated openings; pressing the bridging-portions so that each bridging-portion has a final sectional shape of each cutter blade of the inner cutter; twisting the bridging-portions so that the cutter surfaces of the cutter blades are aligned substantially to the surface of the thin metal plate element; forming the thin metal plate element into substantially an arch shape with the cutter surface sides of the cutter blades facing outward; and executing finishing-work on the outer circumferential surface of the arch-shaped thin metal plate element.
Abstract:
An apparatus for bending a band-shaped work, the apparatus including a stationary cylinder having at least a pair of slits on diametrically opposite sides thereof, the slits providing a passageway in which the work is inserted through the slits, a rotary sleeve accepting the stationary cylinder with a gap interposed therebetween, the rotary sleeve having a first opening and a second opening on diametrically opposite sides thereof, a first driving means for feeding the work passed through the passageway in the stationary cylinder and the first and second openings of the rotary sleeve, and a second driving means for rotating the rotary sleeve by a predetermined amount while the movement of the work is stopped so as to bend the work between the stationary cylinder and the rotary sleeve.
Abstract:
An automatic bending apparatus for bending a band-shaped work at a plurality of positions in sequence with intermittent feed of the work in a longitudinal direction thereof. The bending apparatus includes a swingable work holder for holding the work and a fixed bending jig for bending the work in cooperation with the work holder. The work projecting from an outlet of a passage formed in the holder is pressed against the jig by swinging the holder to approach it toward the jig. After bending the work, the holder is returned to a neutral position, and the work is fed to be projected from the outlet, then repeating the above operation. In marking the work with a cutter, a cutting sound detecting device such as a microphone is provided to detect whether the cutter has come into contact with the edge of the work. Further, a depth of cutting from the edge of the work is controlled to be constant on the basis of a timing of detection of the cutting sound.
Abstract:
The method of manufacturing the knife blade (1), comprises the following steps: by stamping the two faces (1a, 1b) of a blade blank (1), a series of protuberances (2, 3) are formed, extending transversely to the length of the blade and, during the same stamping operation, a chamfer is formed on one of the longitudinal edges of the blade, after which, said edge (5) of the blade opposite the chamfer is sharpened. Use especially in order to avoid the blade sticking when cutting food.
Abstract:
A scalloped cutting edge is formed on a knife blank by disposing the blank between corresponding faces of a punch and die assembly, whereby a resilient face of the punch compresses the blank into a plurality of scallop-shaped depressions formed in the face of the die, thereby imparting a corresponding scalloped configuration to the edge portion of the blank is then sharpened by partially removing the convex side of the scallops by beveling the blank edge portion.