PURPOSE: To expand the diameter of a boring tool when the boring tool has worn away during machining process and equalize machining time by connecting a stroke adjusting mechanism with a working shaft to expand and contract the boring and honing tools individually.
CONSTITUTION: A boring tool 21, rought and finish honing wheels 31, 41 are fitted on a machining head 4 under the condition of freely expanding and contracting respectively in radial direction. A working shaft which moves axially and expands or contracts the boring tool 21 and honing tools 31, 41 individually is inserted in the machining head 4. A stroke adjusting mechanism for the working shaft is connected with the working shaft so as to vary the amount of expansion and contraction of the boring tool 21. After boring process, a hole is cleaned with an air ejected from a nozzle 501 and its bore is measured with an air micrometer 51. When the bore becomes less than a desired value owing to the worn tool 21, the diameter of the worn tool 21 is enlarged by the amount of wear by means of the adjusting mechanism, and the machining time can be therefore equalized.
WADA MINORU
ABE KAZUO
IDA YUKINARI
| JPS57107712A | 1982-07-05 | |||
| JPS57153403U | 1982-09-27 | |||
| JPS5288053A | 1977-07-22 |
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