| 摘要 |
Machining unit 1 for performing machining operations in the external wall of workpieces of cylindrical or conical shape, comprising means 14, 15 for supporting and positioning the workpiece to be machined 2, a rotary plate 4 arranged under the workpiece to be machined and machining means 13, 13a mounted on the said plate by the intermediary of translation means 9, 12, with a view to performing machining operations on the workpiece to be machined from below. <IMAGE>
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