Apparatus for adjusting the cutting edge of a tool in a machine

Details Apparatus for adjusting the cutting edge of a tool in a machine Apparatus for adjusting the cutting edge of a tool in a machine

1976-03-01

1977-04-19

Vlachos, Leonidas

Turning

Process of turning

82 34R, 90 13C, B23B 2506

Patent

active

040181138

ABSTRACT:
The invention relates to the positional adjustment of a cutting tool in a machine tool for the purpose of ensuring that the cutting tool is exactly in its correct position prior to starting machining operations. The machine tool is of the kind having a cutting tool support displaceable relative to the bed along two axes which are perpendicular to each other. The apparatus provided for the above purpose in accordance with the invention includes an optical projector producing in a stationary plane a picture of the tip of the cutting tool, including its cutting edge. When the tool support is displaced along either axis, the position of the picture on the plane changes accordingly. A stationary linear array of photosensitive diodes is arranged parallel to one of the axes of displacement of the tool support so that individual diodes will be covered or uncovered by the picture when it travels across the plane upon displacement of the tool support. The switching position of individual diodes is thereby altered which results in the emission of impulses whose number corresponds to that of diode covered or uncovered by the moving picture. The impulses are transmitted to an electronic processor whose output signals can be used for controlling the movements of the tool support in response to the arrival of the picture in or its departure from predetermined positions relative to the array of photosensitive diodes and in relation to a fixed reference point.

REFERENCES:
patent: 3181401 (1965-05-01), Rice et al.
patent: 3187247 (1965-06-01), Colten et al.
patent: 3395283 (1968-07-01), Sefton et al.
patent: 3727493 (1973-04-01), Lahm

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