US Patent: 2,605,655
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| Boring Cutter
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Patentee:
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| Erwin J. Kaiser (exact or similar names) - Fond Du Lac, Fond Du Lac County, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 30, 1946 |
| Granted: |
Aug. 05, 1952 |
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Joel Havens
"Vintage Machinery" entry for Giddings & Lewis Manufacturing Co.
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Description: |
| Claim:
The present invention pertains generally to cutting tools and more particularly to a boring cutter having a cutting tip of cemented carbide or the like. The use of high-speed cutting tips of carbide material frequently presents serious practical difficulties with regard to their mounting. One widely accepted expedient involves brazing the cutting tip to a block or holder of steel. Due to the differential expansion rate between the steel and the material in the tip, there is a tendency for excessive temperature stresses to occur in the tool, thereby limiting its life and also its effectiveness. Another mounting expedient which is particularly well suited for use in large tool sizes involves clamping the cutting tip to the holder by means of mechanical pressure. Arrangements of this type overcome the disadvantages inherent in brazing the tips to their holders but are not always satisfactory in practice due, for example, to the application of high localized clamping stresses which are apt to result in tool breakage. |
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