Drilling machine especially for drilling glass

Details Drilling machine especially for drilling glass Drilling machine especially for drilling glass

1984-12-04

1986-11-18

Weidenfeld, Gil

Cutting by use of rotating axially moving tool

Tool or tool with support

Having axial, core-receiving central portion

125 20, 408 25, 408 36, 408118, 408186, B23B 5104

Patent

active

046232877

ABSTRACT:
Drill apparatus, especially for drilling glass, with hydraulic and/or mechanically advancing, driven drill spindle, wherein the drill spindle is secured in a spindle carrier and is equipped at the end which is facing towards the workpiece with a drill, as well as being equipped with a countersink or the like drill which generally surrounds the drill, whereby the drill and the countersink drill are axially adjustable with respect to one another, in accordance with the preceding wear. The drill is connected in a drill carrier by way of adjustment threads. An automatic adjustment device is provided for the drill in the drill spindle, which adjustment device includes a mechanical, forward and reverse step motion device with a screw-type guide, and a hydraulic cylinder/piston actuating assembly for the step motion device. The hydraulic cylinder/piston actuating assembly can be supplied with hydraulic pressure medium through the drill spindle carrier and additional passages. An adjustment torque is imparted via the step motion device to the drill, whereby the drill is adjusted in its position in the adjustment threads.

REFERENCES:
patent: 2590068 (1952-03-01), Perrul
patent: 3635573 (1972-01-01), Halpern
patent: 3778179 (1973-12-01), Rivas
patent: 4066380 (1978-01-01), Beck et al.
patent: 4297059 (1981-10-01), Miyanaga
patent: 4436460 (1984-03-01), Powell
patent: 4449868 (1984-05-01), Steinsberger et al.
patent: 4514121 (1985-04-01), Fuchs, Jr.

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