Method and apparatus for surface grinding of small diameter long

Details Method and apparatus for surface grinding of small diameter long Method and apparatus for surface grinding of small diameter long

1988-01-14

1989-05-23

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51 48R, 51 34D, 51 67, 125 30WD, B24B 540

Patent

active

048317837

ABSTRACT:
There is provided a method and apparatus for inside surface finishing with a high degree of dimensional accuracy and axial parallelism for long bores of very small diameter in work pieces. The method employs a high tensile strength steel wire as the grinding tool rotating at high speed under tension just below its yield strength. The wire is reciprocally moved back and forth in an axial direction and is coated with abrasive material. The work piece with the wire passing through its bore to be surface finished, is rotated eccentrically with respect to the wire and is axially parallel thereto. The inner wall of the bore is pressed against the wire which passes therethrough. The apparatus includes two clamping devices which reciprocally move back and forth together with a common base plate and which are rotated by synchronized drives. Between the two clamping devices the wire is stressed under tension, and a work piece holder which can be moved in a vertical direction transverse to the wire rotates the work piece.

REFERENCES:
patent: 925233 (1909-06-01), Schmidmer
patent: 2047055 (1936-07-01), Blood
patent: 2369094 (1945-02-01), Weaver
patent: 4069805 (1978-01-01), Sherman

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