Hand tool, in particular, a screwdriver
AssigneeWera Werk Hermann Werner GmbH & Co.
InventorMartin Strauch
Life of this patent
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Abstract
A process for profiling a workpiece engagement surface of a band tool, and a hand tool produced thereby, in particular a screwing tool, such as a screwdriver or wrench, pliers, a clamping tool or a file, comprising the steps of briefly irradiating the workpiece engagement surface (8) over a large area and/or locally with a high level of energy, such that a region of an irradiated zone which is close to the surface melts and solidifies suddenly at an edge to form a rib.
Claims6
A process for profiling a workpiece engagement surface of a hand tool to attain a desired profile of said surface, comprising the steps of, briefly irradiating with a laser or an electron beam a portion of said workpiece engagement surface with a high level of energy, melting a region of an irradiated zone close to said workpiece engagement surface by said irradiation, and solidifying said region suddenly at an edge to form a rib in said profile, and wherein, prior to said irradiating step, there is a step of hardening said tool, and the irradiating step employs irradiation by a laser beam.
A process for profiling a workpiece engagement surface of a hand tool to attain a desired profile of said surface, comprising the steps of:
- briefly irradiating with a laser or an electron beam a portion of said workpiece engagement surface with a high level of energy, melting a region of an irradiated zone close to said workpiece engagement surface by said irradiation, and solidifying said region suddenly at an edge to form a rib in said profile and, wherein the workpiece engagement surface (8) is chrome-plated before said irradiation.
Dependencies are inferred from the claim text.