SU959980A1

SU959980A1 - Electrode device for electric discharge piercing of grooves in blanks

Info

Publication number: SU959980A1
Application number: SU803221896A
Authority: SU
Inventors: Александр Сергеевич Степанов; Николай Борисович Анфимов; Анатолий Александрович Коноваленко
Original assignee: Предприятие П/Я М-5537
Priority date: 1980-12-19
Filing date: 1980-12-19
Publication date: 1982-09-23

Description

Изобретение относится к электрофвэн-1 ческим и электрохимическим методам обработки и может быть использовано при изготовлении цилиндрических деталей методом прямого копирования для получения крестообразного поперечного сечения. ⁵Известно электродное устройство для электроэрозионной прошивки пазов в заготовке, включающее базовый опорный⁴элемент для крепления заготовки и установленный с возможностью возвратно-поступательного перемещения относительно него электрододержатепь с электродами^!}.The invention relates to electrofan-1 and electrochemical processing methods and can be used in the manufacture of cylindrical parts by direct copying to obtain a cross-shaped cross section. ^{5 An} electrode device for electroerosive flashing of grooves in a workpiece is known, including a base support ⁴ element for securing the workpiece and installed with the possibility of reciprocating movement relative to it with an electrode support with electrodes ^!}.

Точность взаимного расположения электрода и заготовки в известном устройст- ₁₅ве складывается из погрешности выставки каждого из них отдельно относительно базовой плоскости станка и составляет 0,02» 0,03 мм. При этом повысить точность обработки на известном устройстве не 20 представляется возможным из-за раздельной выставки электрода и заготовки относительно базовой поверхности станка, а не между собой.The accuracy of the mutual arrangement of the electrode and the workpiece in the known device _{15 is made} up of the error of the exhibition of each of them separately relative to the base plane of the machine and is 0.02 ”0.03 mm. At the same time, it is not possible to increase the accuracy of processing on the known device 20 because of the separate exhibition of the electrode and the workpiece relative to the base surface of the machine, and not between each other.

Целью изобретения является повышение точности не хуже 10,003 ММ и производительности обработки в 2 — 3 раза. Кроме того, целью является возможность обработки одновременно двух поверхностей 1в одной удвоенной заготовке вдоль ее осн.The aim of the invention is to improve the accuracy of not worse than 10.003 MM and processing productivity of 2 to 3 times. In addition, the goal is the ability to simultaneously treat two surfaces 1 in one doubled workpiece along its main.

Поставленная цель достигается тем, что опорный элемент выполнен в виде корпуса со сквозными отверстиями, оси которых взаимно перпендикулярны и пересекаются, одно из отверстий, расположенное вдоль высоты корпуса, предназначено для размещения и направления электрододержателя, а другие — для закрепления заготовки, а электрододержатепь выполнен в виде штока с двумя расположенными вдоль его оси параллельными между собой лысками, соединенными сквозным пазом, ось которого параллельна оси штока, на каждой из лысок жестко закреплены введенные в устройство сменные упоры h виде пластин из неэлектропроводного материала, которые расположены параллельно оси паза с двух сторон от него и на концах которых.This goal is achieved in that the support element is made in the form of a housing with through holes, the axes of which are mutually perpendicular and intersect, one of the holes located along the height of the housing is designed to accommodate and guide the electrode holder, and the others to secure the workpiece, and the electrode holder is made in view of the rod with two parallel flats located along its axis, connected by a through groove, the axis of which is parallel to the axis of the rod, on each of the flats are fixed interchangeable stops h in the form of plates of non-conductive material, which are parallel to the axis of the groove on both sides of it and at the ends of which.

.959980 установлены электроды, при этом длина паза превышает длину упоров с закрепленными на них электродами, а ширина паза больше диаметра отверстия для установки . заготовки. 5.959980 electrodes are installed, while the groove length exceeds the length of the stops with electrodes attached to them, and the groove width is greater than the diameter of the installation hole. blanks. 5

На фиг. 1 изображено предлагаемое устройство, общий вид; на фиг. 2 - то же, вид сверху; на фиг. 3 — обработанная цилиндрическая заготовка; на фиг. 4 - разрез А-А на фиг. 1. 10In FIG. 1 shows the proposed device, a General view; in FIG. 2 - the same, top view; in FIG. 3 - processed cylindrical billet; in FIG. 4 is a section AA in FIG. 1.10

Корпус 1 имеет два взаимно пересекающихся и перпендикулярных отверстия 2. и 3, в которых по посадке скольжения уотановлены соответственно обрабатываемая цилиндрическая заготовка 4 и подвижный 15 цилиндрический шток 5.The housing 1 has two mutually intersecting and perpendicular holes 2. and 3, in which a machined cylindrical workpiece 4 and a movable 15 cylindrical rod 5 are mounted on the slide fit.

Заготовка 4 является заготовкой крестообразного упругого элемента 6 длиной Б, внешний вид которого с тонкими взаимно перпендикулярными перемычками 7 и 8 с ₂₀длиной В, изображен (фиг. 3) после обработки. Толщиной перемычек 7 и 8 (уменьшая или увеличивая их) регулируют величину конструктивно заданного крутящего момента в каждом упругом элементе 6. ₂₅ The blank 4 is a blank of a cross-shaped elastic element 6 of length B, the appearance of which with thin mutually perpendicular jumpers 7 and 8 with ₂₀ length B, is shown (Fig. 3) after processing. The thickness of the jumpers 7 and 8 (decreasing or increasing them) regulate the magnitude of the structurally specified torque in each elastic element 6. ₂₅

Кроме того, по конструктивным соображениям упругие элементы 6 необходимо комплектовать по парам с абсолютно равной жесткостной характеристикой (по моменту к,учения), поэтому заготовка 4 (фиг. 1 ₃₀ и 2) имеет удвоенную длину Г, т. е. Г= ~2Б.In addition, for structural reasons, the elastic elements 6 must be completed in pairs with an absolutely equal stiffness characteristic (at the moment k, exercises), therefore, the workpiece 4 (Figs. 1 ₃₀ and 2) has a double length Г, i.e. Г = ~ 2Б .

Корпус 1 имеет два параллельных между собой и перпендикулярных штоку 5 опорных торца 9 и 10, которым он крепится на неподвижном столе 11 электроискрово- ³⁵го станка и выполнен из электроизоляционного материала. Заготовка 4 крепится неподвижно в корпусе 1, например, двумя винтами 12, к которым и подводится отрицательный потенциал электроискрового ⁴⁰станка. Шток 5 имеет сквозной радиальный паз 13, внутри которого с зазором проходит заготовка 4, и пару параллельных между собой и перпендикулярных пазу 13 лысок 14 и 15. На каждой лыске ⁴⁵14 и 15 неподвижно закреплены винтами 16' по две пары упоров 17, например, плоскопараллельные концевые меры длины.The housing 1 has two supporting ends 9 and 10 parallel to each other and perpendicular to the rod 5, by which it is mounted on a fixed table 11 of the spark machine ³⁵ and is made of electrical insulating material. The workpiece 4 is fixedly mounted in the housing 1, for example, by two screws 12, to which the negative potential of the spark machine ^{40 is} supplied. The rod 5 has a through radial groove 13, inside which the workpiece 4 passes with a gap, and a pair of flats 14 and 15 parallel to each other and perpendicular to the groove 13. Two pairs of stops 17 are fixedly fixed with screws 16 'on each flange ⁴⁵ 14, for example, plane-parallel end measures of length.

возвратно-поступательным приводом электроискрового станка.reciprocating electric spark machine.

К каждому упору 17 закрепляют накладками 19 по два электрода 20, кото- рые соединены с положительным потенциалом электроискрового станка . Причем расстояние Е между всеми 8 штуками электродов 20 выставляется одновременно с упором, например, по технологическому шаблону - шупу, толщина которого с учетом межэлектродного зазора превышает толщину перемычки 7.Two electrodes 20, which are connected to the positive potential of the spark machine, are fixed to each stop 17 by plates 19. Moreover, the distance E between all 8 pieces of electrodes 20 is set simultaneously with an emphasis, for example, according to the technological pattern — a probe whose thickness, taking into account the interelectrode gap, exceeds the thickness of the jumper 7.

Все электроды 20 имеют простую конфигурацию и обрабатываются одновременно в виде блока (по 8 шт.), аналогично обрабатываются (блоком) упоры 17, что позволяет исключить отклонения плоскостности (по горизонту) как между двумя противолежащими электродами 20, так и между двумя смежными парами электродов 20, закрепленных на лысках 14 и 15.All electrodes 20 have a simple configuration and are processed simultaneously in the form of a block (8 pieces each), the stops 17 are similarly processed (by a block), which eliminates flatness deviations (horizontally) between two opposite electrodes 20 and between two adjacent pairs of electrodes 20, fixed on flats 14 and 15.

Устройство работает следующим образом.The device operates as follows.

На электроды 20 и заготовку 4 подают соответственно положительный и отрицательный потенциал. Сообщают возвратно-поступательное движение штоку 5 с электродами 20 от привода электроискрового станка, причем обработка может производиться как при движении штока 5 вниз (в обработке участвуют только верхние электроды 20), так и при движении вверх (в обработке участвуют только нижние электроды 20). Обработка производится в среде электролита.On the electrodes 20 and the workpiece 4 serves respectively positive and negative potential. The reciprocating motion is reported to the rod 5 with the electrodes 20 from the drive of the electric spark machine, and processing can be performed both when the rod 5 moves down (only the upper electrodes 20 are involved in the processing) and when moving up (only the lower electrodes 20 are involved in the processing). Processing is carried out in an electrolyte environment.

Простота и точность в регулировании \ взаимного расположения электродов по технологическому шаблону — щупу, возможность обработки сдвоенной (по длине) заготовки, отсутствие необходимости в переналадке взаимного расположения штока 5 с упорами 17 относительно заготовок 4 после обработки последней позволяют получить точность в пределах ±0,003 мм по толщине перемычек 7 и 8 и повысить ' производительность в 3 - 4 раза.Simplicity and accuracy in the regulation \ relative position of the electrodes according to the technological pattern - probe, the possibility of processing a double (in length) workpiece, the absence of the need for readjustment of the relative position of the rod 5 with stops 17 relative to the workpieces 4 after processing the latter allows to obtain an accuracy within ± 0.003 mm the thickness of the jumpers 7 and 8 and increase 'productivity by 3-4 times.

Claims

(54) ELECTRODE DEVICE FOR ELECTRIC EASTERN EMBRONSTRUCTURE IN THE PREPARATION The invention relates to eEETrophie (| and electrochemical processing methods and can be used in the manufacture of cylindrical parts with an amphora) copying to obtain a cross-shaped transverse section. An electrode device for electroerosive flashing of grooves in the workpiece is known, including a basic support element for securing the workpiece and a device with the possibility of reciprocating movement of the electrode holder with electrodes relative to it. relative to the base plane of the machine and is 0.02 O, OZ mm. At the same time, it is not possible to increase the machining accuracy on a known device due to the separate exhibition of the electrode and the workpiece, which is relative to the base surface of the machine, and not to each other. The designation of the inventive method is more accurate than tO, OO3 "mn mn processing performance 2 to 3 times. In addition, it is entirely possible to work on: simultaneously working two IB surfaces on one double workpiece along its axis. Delivered by the fact that the supporting element is made in the form of a housing with through holes, the axes of which are mutually perpendicular and intersect, one of the holes located along the height of the housing is intended to be placed and finally electrodes | ; Products, and the electrode holder is made in the form of a rod with two parallel along along its axis parallel to each other luka kami connected by a through groove, the axis of which is parallel: the axis of the rod, rigidly fixed on The device is replaceable lugs L in the form of platinum made of non-conductive material, which are located parallel to the axis of the groove on both sides of it and at the ends of which. electrodes are installed, the paea is longer than the stops with electrodes attached to them, and the groove width is larger than the diameter of the hole for the workpiece. FIG. 1 shows the proposed system, the overall view; in fig. 2 - the same, top view; in fig. 3 — processed cylindrical cut; in fig. 4 shows section A-A in FIG. 1. The housing 1 has two mutually intersecting and perpendicular holes 2, and 3, in which, according to the slide fit, respectively, the machined PCD blank 4 and the movable cylindrical rod 5 are machined. The blank 4 is a blank of the Creo-shaped elastic element 6 of length B whose appearance with thin mutually perpendicular bridges 7 and 8 with a length B, shown (Fig. 3) after processing. The thickness of the jumpers 7 and 8 (decreasing or increasing them) regulates the value of the structurally specified torque in each elastic element 6. In addition, for structural considerations, the elastic elements 6 must be combined in pairs with an absolutely equal stiffness characteristic (according to the moment K. 1 student), therefore, the workpiece 4 (Fig. 1 and 2) has a doubled length T, i.e. T. Case 1 has two parallel and perpendicular stem 5 supporting ends 9 and 10, by which it is mounted on a stationary table 11 of an electric-spark machine and made of electrically insulating material. The workpiece 4 is fixedly mounted in case 1, for example, by two screws 12, to which the negative potential of the electric spark machine is supplied. The rod 5 has a through radial groove 13, inside KOToponj with a gap passes the workpiece 4, and a pair of parallel faces 13 and 15 perpendicular to the groove 13 are 14 and 15. On each bald spot 14 and 15, two pairs of stops 17 are fixed with screws 1, for example, plane-parallel trailer measures of length. Moreover, the ends 18 of the stops 17 are parallel to each other and are brought to touch with the workpiece. 4, which eliminates the angular rotation of the rod 5 relative to the workpiece 4. In addition, the ends 18 are parallel to the generatrix of the hole 3 or the rod 5. The rod and interchangeable stops 17 are made of a non-conducting material. Rod 5 is connected by a longitudinal (along the arrow D) reciprocating drive of an electric-spark machine. Each stop 17 is fixed by overlays 10 with two electrodes 20, which are connected to a positive potential spark-ignition machine. Moreover, the distance E between all 8 pieces of electrodes 20 is exposed simultaneously with an emphasis, for example, on a technological pattern — a probe whose thickness, taking into account the interelectrode gap, exceeds the thickness of jumper 7. All electrodes 20 have a simple configuration and are processed simultaneously as a block 8 pcs.), Stops 17 are similarly processed (by block), which allows to eliminate flatness deviations (horizontally) both between two opposite electrodes 2O, and between two adjacent pairs of electrodes 20 mounted on flies 14 and 15. The device operates as follows. The electrodes 20 and the workpiece 4 serves, respectively, positive and negative potential. Reciprocating movement of the rod 5 with electrodes 2O from the drive of the electric-spark machine is reported, and the processing can be done both by moving the rod 5 down (only electrodes 20 are involved in the processing) and upwardly (only lower electrodes 20 are involved in the processing). The treatment is performed in an electrolyte environment. The simplicity and accuracy in regulating the mutual arrangement of electrodes according to the technological pattern - probe, the possibility of processing a double (in length) workpiece, no need for readjustment of the relative position of the rod 5 with the stops 17 relative to the billets 4 after the treatment of the latter allows to obtain accuracy within iO, OO3 mm through the thickness of the jumpers 7 and 8 and increase productivity by 3 - 4 times. The invention Electrode device for electroerosive flashing of grooves in the workpiece, including a basic support element for securing the workpiece and mounted with the possibility of reciprocating relative to it an electrode holder with electrodes, so that increase accuracy and processing performance

when flashing cross-shaped grooves, the auxiliary element is made in the form of a housing with a squash hole, the axes of which are mutually perpendicular and intersect, one of the holes located along the height of the honeycomb of the housing, and another for fixing the workpiece, and the electrode holder is made in the form of a rod with two parallel faces parallel to each other, connected through a groove, the axis of which is parallel to the axis of the rod, are rigidly fixed on each of the faces in yciw roystvo interchangeable abutments in the form of plates 5

of non-conductive material, the cotsuyy are arranged parallel to the axis of the groove on both sides of it and at the ends of which electrodes are installed, with the longer groove exceeding the length of the stops with electrodes fixed on them, and the groove of the groove is larger than the diameter of the workpiece opening.

Information sources,,

taken into account in the examination 1. New technological nponecd electrophysical processing. Methodical recommendations of the research institute for the development of tire engineering. M., 1973, p. 202.

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