Apparatus for working peripheral wall of hemispherical shell
AssigneeMitsubishi Jukogyo Kabushiki Kaisha
InventorsRyoichiro Sasano, Tsutomu Toyohara, Toshimichi Takigawa
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Abstract
This invention relates to a method of forming a spherical surface of a hemispherical shell having projections on its inner and outer surfaces and an apparatus for working the hemispherical shell, which are particularly suitably applied to a large-scale spherical pressure resisting shell for forming a control chamber in an abyssal diving research vessel.
Claims2
A profile surfacing apparatus for working a peripheral wall of a hemispherical shell comprising a boring machine having a boring head (31) with a main spindle (33), and apparatus body (A) mounted on said boring head for receiving said main spindle, a rotary flange (50) rotatably supported on said apparatus body and connected to said main spindle for receiving a rotary drive force of said main spindle, said rotary flange having a rotation axis, a rotary arm (60) provided on an end of said rotary flange and having a slide guide portion (60a, 60b) extending in a direction perpendicular to the rotation axis of said rotary flange, a template (92) fixed to said rotary arm and extending along said slide guide portion, a slide head (78) slidable along said slide guide portion of said rotary arm, a cutting tool holder (84) provided with a cutting tool (85) and mounted on said slide head for movement parallel to the rotation axis of said rotary flange in cutting and feeding directions, and a profiling unit engaged with said template and connected to said tool for moving said cutting tool in the cutting and feeding directions along said template which is mounted on said rotary arm for profiling the semispherical shell.
Dependencies are inferred from the claim text.