Method of and an apparatus for applying hard material to cutting tool teeth, especially the teeth of saw blades
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United States of America Patent
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Jan 14, 1997
Grant Date -
N/A
app pub date -
Dec 9, 1994
filing date -
May 4, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of and an apparatus for applying hard material to cutting tool teeth (12), especially the teeth of saw blades (10). Due to its surface tension, the molten material (56) forms a spherical segment (58) in a mold cavity (40) which is defined around a tooth (12). The molten material (56) is cooled in the mold cavity (40) and subsequently heated again until it reaches a state which is at least approximately liquid. Only then is pressure, progressing in the direction towards the tip (18) of the tooth, applied to the spherical segment (58), whereby the latter is flattened. Hereby the precision in shape and durability of the teeth (12) is improved which are made of hard material (56), first molten and subsequently solidified.
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