| 摘要 |
A bit and sleeve have matching tapers and are pressed together so that in a working configuration the external diameter of the sleeve is stretched to slightly exceed the diameter of the bore into which the combined assembly is to be asserted. The sleeve is then partially removed from the bit to relax its external diameter so that the combined assembly can be placed into the bore. The bit and sleeve are then pressed into the working configuration in the bore until the sleeve has expanded radially into tight contact with the inner wall of the bore and the bit has seated itself on the end wall of the bore.
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