SU925613A1

SU925613A1 - Device for electrochemical perforation of apertures

Info

Publication number: SU925613A1
Application number: SU802999033A
Authority: SU
Inventors: Зиновий Абрамович Лекарев; Александр Иванович Дубовик; Владимир Исаакович Суслин
Original assignee: Научно-Исследовательский Институт Автоматизации Управления И Производства
Priority date: 1980-10-30
Filing date: 1980-10-30
Publication date: 1982-05-07

Description

Изобретение относитс к области . электрохимической размерной обработки и может быть использовано, в частности дл получени отверстий в тонкостенных цилиндрических детал х.The invention relates to the field. electrochemical machining and can be used, in particular, to produce holes in thin-walled cylindrical parts.

Известно устройство.дл электрохимической перфорации стенок цилиндрических тонкостенных деталей,, содержащее обрабатывающие электроды, установленные в средстве креплени с возможностью перемещени в направлении стенки обрабатываемой детали, и базирующий элемент 1.A device is known. For electrochemical perforation of the walls of cylindrical thin-walled parts, containing processing electrodes installed in the attachment means with the possibility of movement in the direction of the wall of the workpiece, and the clamping element 1.

Однако использование известного устройства дл перфорации отверстийв детал х типа тонкостенных втулок нецелесообразно, поскольку невозможно обрабатывать несколько радиально расположенных отверстий с достаточной точностью и производительностью .However, the use of a known device for punching holes in parts such as thin-walled bushings is impractical because it is not possible to process several radially arranged holes with sufficient accuracy and productivity.

Целью изобретени вл етс повышение точности и производительности перфорации отверстий путем обеспечени возможности одновременного получени идентичных контуров на обеих сторонах стенки детали, и одновременной обработки двух сторон.The aim of the invention is to improve the accuracy and productivity of the perforations of the holes by making it possible to simultaneously obtain identical contours on both sides of the wall of the part, and to simultaneously process two sides.

Поставленна цель достигаетс тем, что в устройстве дл электрохимической перфорации стенок цилиндрических тонкостенных деталей в услови х прокачки электролита, содержащем элемент дл базировани обрабатываемой детали, средство креплени обрабатывающих электродов,токоподвода положительного и отрицательного потенциала соответственно к обрабатываемой детали и обрабаты10 вающим электродам, приспособление дл креплени обрабатывающих электродов выполнено в виде двух коаксиальных цилиндров, установленных с кольцевым зазором, в котором помещен элемент дл базировани детали. Электроды при этом расположены оппозитно друг другу. Это позвол ет прн перфорации стенки цилиндрической тонкостенной детали получить одно20 временно с обеих сторон ее стенки идентичные контуры прошиваемых отверстий и, таким образом, повысить точность перфорации, и производить одновременно перфорацию стенки детали с обеих сторон, в результате The goal is achieved by the fact that in the device for electrochemical perforation of the walls of cylindrical thin-walled parts under the conditions of electrolyte pumping, there is an element for locating the workpiece, means for fixing the processing electrodes, a current supply of positive and negative potential, respectively, to the workpiece and machining electrodes, attachment device machining electrodes made in the form of two coaxial cylinders installed with an annular gap in which contains the element for basing the part. The electrodes are located opposite to each other. This allows prn perforation of the wall of a cylindrical thin-walled part to obtain one-twist temporarily on both sides of its wall identical contours of pierced holes and, thus, improve the accuracy of perforation, and simultaneously produce perforation of the wall of the part on both sides, as a result

25 чего в два раза уменьшаетс межэлектродный зазор, увеличиваетс скорость перфорации стенок детали, м, следовательно, производительность25 which doubles the interelectrode gap, increases the rate of perforation of the walls of the part, m, therefore, the performance

Claims

30 devices. The drawing shows schematically in section a device for electrochemical perforation of the walls of thin-walled cylindrical parts. The device comprises a base 2 mounted on the machine table 1 (not shown), on which is mounted a device for cracking the treatment electrodes, made in the form of two coaxially arranged cylinders 3 and 4 of a dielectric material. On the base 2 between the cylinders and 4, the element 5 of the base of the workpiece 6 is fixed. On the cylinders 3 and 4, the processing electrodes 7 and 8 and the current leads 9 and U of the negative potential are installed oppositely. In cylinders 3 and 4, channels 11 for supplying electrolyte are provided. On the traverse 12 of the machine through the pinhole clamp 13 secure the eye of the positive potential supply 14 The device operates as follows. The workpiece 6 is installed in the element 5 of the base coaxially to the cylinders 3 and 4. Then lower the yoke 12, pressing the current lead 14 to the part 6. I feed through the channels 11: electrolyte to the treatment area. The process current is turned on, with the positive potential of pliers from the pinhole clamp 13 using the current lead 14 to the part 6, and the negative potential from table 1 through the base 2 and the current leads 9 and 10 to electrodes 7 and 8, respectively. Before this, the part 6 is processed, as a result of which holes are formed in the walls of the part, which correspond to the outer contour of the electrodes 7 and 8. When the treatment is finished, turn off the current, cut off the electrolyte supply, lift the traverse 12, and remove the next part. At present, openings in cylindrical thin-walled parts are mechanically performed, i.e. drilling on the walls, since electrochemical machining with devices with movable electrodes is expensive, low in productivity and does not provide the required quality of holes. In this connection, a drilling machine was chosen as the base sample for comparison of technical and economic indicators. The proposed device eliminates the deburring operation, which improves processing performance. In addition, the quality of hole machining and, consequently, the durability of the products into which the workpiece is included, goes down. Claims of the invention A device for electrochemical perforation of holes, on the basis of which the element for locating the workpiece and the fixture for fixing the processing electrodes-tools are located, which is different. so that with. the purpose of improving the accuracy and productivity of perforation holes in thin-walled parts such as bushings, the fixture for fixing the processing electrodes-tools is made in the form of two cylinders arranged coaxially with an annular gap, in which the element for the base of the workpiece is placed, while the processing electrodes-tools are installed opposite one to the other. Sources of information taken into account during the examination 1. AL Vishnitsky Electrochemical and electromechanical metal processing. L., Mechanical Engineering, 1971, p. 57-58, fig. 26 (prototype).