Process for preparing grating tools
OwnerKing-Yeung Liinventor
Life of this patent
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Abstract
A process for making a grating tool includes the steps of providing a metal blank having first and second surfaces, defining a first pattern on the first surface having a plurality of exposed areas, etching the first surface in the exposed areas of the first pattern, defining a second pattern on the second surface having a plurality of exposed areas corresponding to exposed areas of the first pattern, etching the second surface in the exposed areas to form openings and blades in the exposed areas of the second pattern corresponding to exposed areas of the first pattern, and stamping the metal blank so that the blades project at an angle above one of the first and second surfaces. The process results in a grating tool having improved blade orientation, blade sharpness and ease of cutting.
Claims20
A process for making a grating tool, comprising the steps of:
- providing a metal blank having first and second opposing surfaces;
- applying an etching resistant material on the first surface in a first pattern defining exposed areas and resistant areas;
- masking the second surface;
- etching the first surface in the exposed areas of the first pattern while the second surface is masked;
- unmasking the second surface;
- applying an etching resistant material on the second surface in a second pattern defining exposed areas corresponding to the exposed areas in the first pattern and resistant areas;
- masking the first surface;
- etching the second surface in the exposed areas of the second surface while the first surface is masked;
- and
- unmasking the first surface;
- wherein the etching of the first and second surfaces forms openings and blades in the corresponding exposed areas of the first and second patterns.
A process for making a grating tool, comprising the steps of
- providing a metal blank having first and second surfaces;
- treating the first surface in a first pattern defining exposed areas and resistant areas;
- etching the first surface in the exposed areas of the first pattern;
- treating the second surface in a second pattern defining exposed areas corresponding to exposed areas of the first pattern and resistant areas;
- etching the second surface in the exposed areas of the second pattern to form openings and blade edges in the exposed areas of the second pattern corresponding to exposed areas of the first pattern;
- and
- stamping the metal blank so that the blades project at an angle above one of the first and second surfaces.
A process for making a grating tool, comprising the steps of:
- providing a metal blank having first and second surfaces;
- defining a first pattern on the first surface having a plurality of exposed areas;
- etching the first surface in the exposed areas of the first pattern;
- defining a second pattern on the second surface having a plurality of exposed areas corresponding to exposed areas of the first pattern;
- etching the second surface in the exposed areas to form openings and blades in the exposed areas of the second pattern corresponding to the exposed areas of the first pattern;
- and
- stamping the metal blank so that the blades project at an angle above one of the first and second surfaces.
Dependencies are inferred from the claim text.