Gear cutting – milling – or planing – Milling – With regulation of operation by templet – card – or other...
Patent
1987-01-22
1989-05-30
Crowder, Clifford D.
Gear cutting, milling, or planing
Milling
With regulation of operation by templet, card, or other...
409187, 409 84, 36447402, 400 17, B23C 300, B44B 302
Patent
active
048345954
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a method and an apparatus for engraving in indelible way type by type a mark formed of numbers and/or letters and/or symbols on a plane or slightly curved surface in order to make personal belongings the marked thing or article, e.g. a car or the like for anti-theft or identification purposes.
Systems and apparatus for similar purposes are already known.
In the known and very diffused apparatus the marking is carried out by means of a device delivering a strong jet of a mixture of compressed air and abrasive granules which are projected on a limited area of the surface to be masked through a mask almost put into contact with said surface. Slits having a form complementary to that of the numbers, letters or symbols to be marked are provided in the mask. In some cases said mask is formed of elements which can be arranged in order to form one of the numbers, letters or symbols of the wording to be provided.
Such known apparatus are used in particular for marking glasses or metallic surfaces. Said apparatus have the drawback of requiring long and laborious operations for preparing and assembling the masks. Furthermore they have the disadvantage to pollute the environment of operation with the dust unavoidably escaping from the apparatus and to dirty surrounding parts, things or persons.
Another type of apparatus provides for the marking with the aid of a warm punching system. Said system is adapted for the marking of surfaces consisting of plastic material or having a covering of plastic material or surfaces of wood or other similar materials. These apparatus require a long time for preparing and arrange the punching device applying the personal wording on the surface and are limited in their use capabilities.
To attain the same purpose the present invention provides an operative method and an apparatus for carrying out this method in which the elements forming the wording to be marked, i.e. numbers, letters or symbols, are set in a computer or controller provided with a keyboard and a display, means being provided that for each type or element of the mark generates an electrical signal containing the information of the form and the size of each type and the sequence of said types. Said signals are transferred to an electromechanical apparatus with a rotating mill for engraving the mark type by type on the surface. The marking essentially begins just after the wording of the mark being arranged into the computer, operation that requires only a short time. It is also provided to use a controller with means for printing and storing the applied wording complete with all personal information regarding the user availing himself of this service.
The present invention essentially provides the use of a controller or computer associated to an electromechanical apparatus. The controller or computer is provided with a keyboard for setting the wording of the mark, a display of the setting data, an eventual printer, and means for storing said printed mark and the personal data of the owner of the marked thing, in particular a car. Of course, the method and the apparatus can be used for other purposes with suitable adaptation.
Said controller or computer is arranged to supply, after a number, a letter or a symbol being set by the respective button of the keyboard and after the setting of information relative to the specific characteristics of each type, electrical signals to the electromechanical apparatus which is arranged to translate said signal of predetermined duration into a rotation movement of the rotating tool, in particular a mill of the like, into a shift towards an operative or nonoperative position of the head of said tool and into separated or simultaneous movements of said head in two directions perpendicular to each other and to the direction of the rotation axis of said tool so that the rotating head of the tool is capable to engrave the surface to be marked reproducing type by type the numbers and/or letters and/or symbols of the mark.
These and other features of the invent
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Crowder Clifford D.
Grandi Servizi S.p.A.
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