Drilling machine for boards, particularly of printed circuits

Metal working – Plural diverse manufacturing apparatus including means for... – Common reciprocating support for spaced tools

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408 3, 408 13, 408 15, 408 16, 408 43, 408 46, B23Q 3157, B23B 3924

Patent

active

045960674

ABSTRACT:
The drilling machine comprises a pair of cross slides formed of two parallelepiped blocks of granite connected as a T above a horizontally stationary board carrying table. The transverse block carries two operating heads and, by means of pneumostatic bearings, guides their movement along the X-axis. The other block is guided by the machine frame by means of other pneumostatic bearings. Each head carries a spindle operable to lock and unlock the tool to permit automatic tool replacement from a corresponding tool magazine with provision for checking the integrity of the engaged tool. One of the heads can be disengaged from the X-axis servomotor and connected to the other one at a predetermined distance. Two series of equal printed circuit supports can be drilled simultaneously by using a single package of boards to be cut after the drilling or the etching. Tool changing and tool integrity checking operations can be effected simultaneously for the two operating heads.

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patent: 4280775 (1981-07-01), Wood
patent: 4326824 (1982-04-01), Lasermann et al.
patent: 4397074 (1983-08-01), Thornton et al.

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