| 摘要 |
PCT No. PCT/DE86/00036 Sec. 371 Date Oct. 14, 1986 Sec. 102(e) Date Oct. 14, 1986 PCT Filed Feb. 5, 1986 PCT Pub. No. WO86/04842 PCT Pub. Date Aug. 28, 1986.A tool holder (1) which can be inserted into the main spindle of a machine-tool is provided on the front region of its shank portion (2) with a cylindrical guide portion (11) for a tapered ring (12) which can be braced elastically and on the rear region of the shank portion (2) there is provided a second cylindrical guide portion (12) for a second tapered ring (14) which can also be braced elastically. At least one of the tapered rings (13, 14) is advantageously provided with a longitudinal slot or partial slots. A flange portion (3) is provided on the front portion which is applied against the front end face (27) of the main spindle (5) .
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