Abstract:
A method (100) of producing toothed blades from a strip material is disclosed. The method (100) comprises: laser cutting (102) the strip material to form a plurality of teeth in an edge of the strip material; and mechanically machining (104) the strip material to remove at least part of a heat-affected portion of the edge resulting from the laser cutting. A toothed blade production line (400; 500) arranged to produce toothed blades from a strip material is also disclosed.
Abstract:
A saw blade (10) is moved in steps for complementary machining operations through a first station (20) and a second station (40) and stopped when a tooth (12) has reached a reference position in the first station (20). A machining process on a second tooth in the second station (40) performed simultaneously with one on a first tooth in the first station (20) is prepared in that the position of the second tooth depending on tooth pitch errors is found and a machining device (60) is moved into a corresponding working position.
Abstract:
Bei dem erfindungsgemäßen Verfahren durchläuft ein mit Zähnen (15) versehener Draht (11) nacheinander einen ersten Induktor (16) und einen zweiten Induktor (18). Die Induktoren (16, 18) arbeiten mit unterschiedlichen Frequenzen und erzeugen unterschiedliche Temperaturen. Der erste Induktor (16) erwärmt insbesondere den nicht zu härtenden Fußabschnitt (17) auf eine hohe Temperatur unterhalb des Austenitisierungstemperaturbereichs. Der zweite Induktor (18) erwärmt die Zähne (15) auf eine noch höhere zweite innerhalb des Austenitisierungstemperaturbereichs liegende Temperatur. Beim Abschrecken ergeben sich definiert gehärtete Zähne gleichbleibend hoher Qualität.
Abstract:
High-strength clamping alloys and a low-noise diamond saw using the same are provided. Preferable types of alloys, compositions and processing amounts to be applied to a shank of the diamond saw are suggested. The shank of a welded type diamond saw is increased in hardness by adding 14 to 28% by weight of Mn to Fe and cold-rolling them within the range of 2 to 25%. As a result, the hardness is increased to a standard value (HRC35) and above, and the noise reduction effect has been significantly increased. The shank of a sintered type diamond saw is increased in strength by adding 10 to 28% by weight of Mn to Fe, followed by heat-treating them. The mechanical performance can be further increased by cold-working the shank to by 20% or more prior to sintering.
Abstract:
Systems and methods for cooling a heat-treated metallic part include a plurality of atomization nozzles disposed on a stage and radially disposed about the part to be cooled; and a fluid in fluid communication with the atomization nozzles. The fluid may gas, liquid, or a combination thereof, e.g., water and gas. During use, the atomization nozzles are generally configured to rapidly cool the thicker sections of the part relative to the thinner section since the thicker sections are generally slower to cool. In some embodiments, the stage can be configured to rotate about the part during cooling. Methods are also disclosed. In one embodiment, the method includes moving a plurality of outlets in a horizontal direction while the heat-treated part is stationary while directing an air and water mixture from the plurality of outlets onto the heat-treated metallic part.
Abstract:
Hardening fixture for simultaneous hardening of a multitude of sawblades, comprising a bottom plate (13) against which the lower ends (12) of the sawblades are supported, vertical pillars (14) and side plates (15) with lateral openings, where guiding strips (16, 17) and distance elements (19) keep the sawblades parallel close to each other without compressive force, where the structural parts are made from graphite with a surface coating not containing carbon.
Abstract:
A process is disclosed for hardening the cutting edges of saws, knives and cutting tools, in particular for processing wood, paper, cardboard, plastic materials, leather and textiles, by means of an energy beam guided over the areas to be hardened of the tool. In order to obtain optimal hardness, a plasma beam is used as energy beam. The plasma beam (2) is guided with a relative speed (v) with respect to the cutting edge of the tool between 5 and 100 mm/sec., the gap between the outlet nozzle of the plasma torch (1) and the cutting edge extends between 2 and 14 mm, the power of the plasma beam is comprised between 1 and 10 kW, and the diameter (d) of the outlet nozzle of the plasma torch (1) is comprised between 3 and 7 mm.
Abstract:
A method (100) of producing toothed blades from a strip material (200, 250) is disclosed. The method (100) comprises: cutting the strip material using combined laser cutting (102a) and mechanical machining (104a) or using waterjet cutting (102b) to form a plurality of teeth in an edge of the strip material (200, 250), wherein the cutting is controlled to cut each of the teeth using a flexible programmable geometry. A toothed blade production line (300, 400) arranged to produce toothed blades from a strip material using the method is also disclosed.