| 摘要 |
An ultra-precision sub-micron boring tool and pre-setting system for finishing through bores or blind bores is disclosed. The system includes a cylindrical cartridge having an internal hollow portion, a first through bore located in the hollow portion, and a toothed segment lodged in the first through bore. The toothed segment and a micrometric screw, which passes through an axial bore in the toothed segment, are arranged on a common geometric axis. A bushing having an internal thread is located in the interior of the axial bore so that the micrometric screw engages with the internal thread. The system also includes a hollow stud which lodges and retains the bushing, a set of rings which carry and envelope the micrometric screw so that the micrometric screw is supported by the set of rings in relation to the cylindrical cartridge, a locknut, a graduated dial attached to an end of the micrometric screw through the locknut, and a second through bore located in the cylindrical cartridge. The second through bore is arranged substantially in a right angle plane which may be inclined in relation to the first through bore. A tool tip is located on a tool shank lodged in the second through bore. Further, the system has a backlash suppression system located in the second through bore and between the tool shank and the toothed segment in the first through bore. |
