Abstract:
A main table(1) transmitting a fixed working plate(2) is displaced for a shape processing of working plate. A subsidiary table(3) is connected with a conducting part(4) which supports a transmit line electrode(5). A X-Y axis shape processing transmission and a X-Y axis conducting displacement can be simultaneously controlled by the numerical control record information which consists of a conducting transmit pulse, a processing transmit pulse, a progress order signal.
Abstract:
The input terminal can be connected with an AC source of a low frequency without equipping a transformer. The rectifier converts the AC to the DC, and is connected with the AC source. The pulse apparatus generates a power of higher frequency than the constant AC frequency by converting the DC into a pulse. The power of high frequency converts a voltage into a desired level in the high frequency transformer. Non-linear series electricity of a pulse intermediation function generates a pulse from the high frequency power of the desired level in the electrical processing machine.
Abstract:
Method of electromachining a workpiece uses a wire electrode spaced from a workpiece to produce a gap through which electrolyte is circulated. The method is improved by imparting vibrations to the travelling electrode wire with a frequency of 100 Hz pref. 1-50 KHz while supplying current pulses to remove metal. Opt. the machining fluid can be water with a resistivity of 5X102-5X104 ohm-cm.
Abstract:
Electro-erosion machine includes a support arm(13) for the wire electrode of the machine. This avoids contact or collision of the workpiece with the arm when the workpiece is displaced. A rotary mechanism for a carriage cylinder(10) associated with the electrode is provided and an associated motor(30) is operated in response to drive signals from a numerically controlled unit. In a modificaion the rotary axis of the carriage cylinder is coaxial with the electrode in the machining region between two guides(15,16). Programming and control are made easier by establishing any angular position of the carriage cylinder & support arm without changing the relative positions of the electrode & the workpiece.
Abstract:
An EDM apparatus in which the control system is fully adaptive by having a reference counter which is stepped up or down depending upon the occurrence of undesirable discharge conditions. The control system thus includes a counter receiving signals representing a desirable gap condition over a relatively short time period and signals representing the non-development of the undesirable condition over a relatively long time period as established by appropriate timer means. A parameter of the gap is controlled in response to a comparison of the gap condition over a sequence of pulses with a desirable state as represented by the count registered in the counter.
Abstract:
An electrical discharge machining apparatus in which an electrode is juxtaposed with a workpiece across a gap filled with a dielectric liquid is provided with means for collecting gases from immediately above the surface of the dielectric liquid, evaluating these gases and detoxifying them by rendering them noncombustible and nonexplosive and nonhazardous to life.
Abstract:
Improvement in a laser machining apparatus using, in combination, a machining laser oscillator (101) and a device (110) for supplying auxiliary energy such as a plasma. The invention is characterized in that the auxiliary energy generated by the auxiliary energy supply device is applied to a position on a workpiece (118) at a small distance from a point thereof irradiated by a machining laser beam. In a preferred embodiment, the auxiliary energy supply device (110) is attached to a turntable (113) so that the auxiliary energy is constantly applied to a position on the workpiece preceding the point thereof irradiated by the laser beam, in the direction of the machining progress. Alternatively, the arrangement may be such that the auxiliary energy is applied to the surface of the workpiece opposite to the surface irradiated by the laser beam. Such an arrangement of apparatus makes it possible to improve the machining efficiency and accuracy, and simplify the structure of the apparatus as a whole, resulting in a reduction in the number of machine troubles. In order to further improve the machining efficiency, in a preferred embodiment, the portion being machined may be supplied with abrasive grains, sprayed with high-pressure working liquid, or supplied with working liquid provided with ultrasonic vibrational energy. An automatic mechanism for adjusting the focal point of the laser beam may also be provided.
Abstract:
GENERATEUR D'IMPULSIONS EN PARTICULIER POUR MACHINES D'USINAGE A DECHARGES ELECTRIQUES. IL COMPREND: DES MOYENS DE REGLAGE DU TEMPS ACTIF 6 ET DU TEMPS DE COUPURE 7; DEUX CODEURS 8, 9 POUR CODER DES REGLAGES DE TEMPS ACTIF ET DE COUPURE; DEUX REGISTRES INTERMEDIAIRES 10, 11 POUR ENREGISTRER LES SORTIES DES CODEURS; UNE HORLOGE A IMPULSIONS 13 POUR FOURNIR DES IMPULSIONS D'HORLOGE; UN COMPTEUR 12 DES IMPULSIONS D'HORLOGE; ET DES MOYENS CIRCUITS POUR ETABLIR, DANS LE COMPTEUR 12, DEUX NIVEAUX DE CHARGE DEVANT ETRE ATTEINTS DANS LES REGISTRES INTERMEDIAIRES 10, 11, LES MOYENS DE CIRCUITS ETANT OPERATOIRES LORSQUE LE COMPTEUR, DANS UN PREMIER MODE, ATTEINT LE PREMIER NIVEAU DE CHARGE, ET LORSQUE LE COMPTEUR, DANS UN SECOND MODE, ATTEINT LE SECOND NIVEAU DE CHARGE, POUR COMMUTER CE DERNIER SUR LE PREMIER NIVEAU DE CHARGE, LES MOYENS DE CIRCUITS FOURNISSANT EN SORTIE UN SIGNAL "D'ACTIVATION" QUAND LE COMPTEUR 12 EST DANS UN PREMIER MODE, ET UN SIGNAL DE COUPURE QUAND LE COMPTEUR 12 EST DANS LE SECOND MODE.
Abstract:
PROCEDE DE COMMANDE ASSERVIE POUR COMMANDER LA DIMENSION DE L'INTERVALLE ENTRE UNE ELECTRODE-OUTIL ET UNE ELECTRODE CONSTITUEE PAR UNE PIECE A USINER, AU MOINS UNE ELECTRODE POUVANT ETRE DEPLACEE PAR DES MOYENS DE MOTEUR. ON AMENE LES ELECTRODES 12 A UNE POSITION D'USINAGE ET ON LAISSE SE DEVELOPPER DES DECHARGES D'USINAGE SUCCESSIVES ENTRE LES ELECTRODES AU TRAVERS D'UN INTERVALLE D'USINAGE 6 POUR ENLEVER DE LA MATIERE SUR LA PIECE, ON DERIVE DE L'INTERVALLE D'USINAGE UN PREMIER SIGNAL REPRESENTANT UN ELARGISSEMENT DE LA DIMENSION D'INTERVALLE, ON COMPTE LES DECHARGES D'USINAGE DEVELOPPEES ET, LORSQUE LE NOMBRE COMPTE ATTEINT UNE VALEUR PREFIXEE, ON EMET UN DEUXIEME SIGNAL, ON PERMET LE DEVELOPPEMENT DU PREMIER SIGNAL AVEC LE SECOND SIGNAL, DEVELOPPE SOUS FORME DE COMMANDE D'AVANCE AUX MOYENS DE MOTEURS POUR FAIRE AVANCER L'ELECTRODE MOBILE VERS L'AVANT DEPUIS SA POSITION D'USINAGE.