Rotary synchronous cross drilling attachment

Metal working – Plural diverse manufacturing apparatus including means for... – Type of machine

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82 12, 82 2E, 408 13, 408125, 409 70, 409 76, 409190, 409218, B23B 326

Patent

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046163859

ABSTRACT:
What is proposed is a drilling attachment for use with a machine tool that rotates a workpiece in which the drilling apparatus is moved into an operative position to the workpiece by means of the machine tool slide and is rotated with the workpiece so that a drilling member associated with the rotating drilling apparatus is caused to rotate and to enter the workpiece while the same is rotating.

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patent: 4550488 (1985-11-01), Okubo et al.
patent: 4575288 (1986-03-01), Roschiwal et al.

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