| 摘要 |
The chucking head consists of a base part (1) and of an additional part (2). The base part (1) is equipped with a bite profiled driver part (3) of the chucking hole (5), while the additional part (2) is revolving around (displaceably mounted on the base part (1)), it is equipped with a guiding part (4) of the chucking hole (5) and an anchoring part (7) of the chucking hole (5). Both parts (1, 2) of the chucking head are equipped with their own circular ring (8, 9) for the spring (10). The solution is to design a versatile chucking head and at the same time to simplify its construction, economize its production and to reduce its dimensions. It is accomplished in the following manner: The base part (1) is made of an internal coat (11) and of an outer coat (12) that are interconnected, and in the space (16) between the inner coat (11) and outer coat (12), part (17) of the additional part (2) anchored by its ends in support circular rings (8, 9) are arranged.<IMAGE>
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