SU1579670A1 - Method of producing electrode-tools for dimensional electrochemical machining - Google Patents

Abstract

The invention relates to electrophysical and electrochemical processing methods, in particular, to a method for producing electrode tools for dimensional electrochemical machining of GTE blades. The aim of the invention is to eliminate etching of the working elements of the tool electrodes. In the manufacture of tool electrodes by the method of reverse polarity, when pumping electrolyte across the longitudinal axis of the blade blade, technological plates made of dielectric material are rigidly fixed on the side surfaces of the tool electrodes instead of metal overlays; when pumping electrolyte along the longitudinal axis of the blade blade, the technological linings are rigidly attached to one of the instrument electrodes, ensuring and this is the possibility of their movement along a sliding fit relative to the side surfaces of another electrode tool. 2 hp f-ly, 4 ill.

Description

(21) 4376913 / 25-08

(22) 11/25/87

(46) 07.23.90. Bul Number 27

(72) L. B. Uvarov, S. I. Sharov,

B. L. Karpov, O. M. Polev and M. P Yerochkin

(53) 621.9.047 (088.8)

(56) Rumsntsev EM and Davydov AD Technologists of Electrochemical Processing of Metals. - Higher School, 1984 with 117-I

(54) METHOD OF MANUFACTURING ELECTRODES-TOOLS FOR DIMENSIONAL ELECTROCHEMICAL TREATMENT

(57) The invention relates to electrophysical and electrochemical processing methods, in particular, to a method of manufacturing electrode tools for the dimensional electrochemical treatment of GTE blades. The aim of the invention is to eliminate etching of the working elements of the tool electrodes. In the manufacture of tool electrodes by the method of reverse polarity, when pumping electrolyte across the longitudinal axis of the blade blade on the lateral surfaces of the tool electrodes, the snake of metal overlays is rigidly fixed. kg: none; the latter form an input and output path for the electrolyte from the interelectrode gap, and when the electrolyte is pumped along the longitudinal axis of the blade, the technological blades:; the tube is rigidly attached to one of the f, - bv points while ensuring l for sliding movement - ldke otnop Gelo-lateral po- veemg..1ei e kgroda Tool

 ) i

J

The invention relates to electrophysical and electrochemical processing methods and, in particular, to a method for manufacturing electrodes: tools for dimensional electrochemical machining of GTE blades.

The aim of the invention is to prevent etching of the surfaces of the closure of the electrode tools with removable metal plates.

FIG. Figure 1 shows the electrodes-tools of the i-blade at the time of the end of processing, a cross section; in fig. 2 is a diagram of the formation of the junction surfaces of the tool electrodes by cutting a single strip into two pads; in fig. 3 is a diagram of the treatment of the working surfaces of the instrument electrodes by the method of reverse polarity when pumping electrolyte across the longitudinal axis of the blade; in fig. 4 - the same, when pumping troll, the length of the longitudinal axis

CHOGG ..-,

E-rlrodo, tools consist of parts 1 and 2 with work surfaces. Forch, 11 professional profiles and backs of the blade 3, n overlays 4-7, the edges 8 of which form the edges of the feather blades 3, and the closing surfaces 9 are formed by perpendiculars reconstructed from the contact points of the blade. parallel to the feed direction of the blade to the edges of the pen blade 3. Parts 1 and 2 are 4-5 wide interelectrode gaps (a ″) wider than the blade width measured in the plane perpendicular to the feed direction, and the plates 4–4 rigidly fixed on the side surfaces of parts i and 2 in such a way that the closing surfaces 9 protrude:; -; - the thick surfaces of parts i and 2 s. half) the thickness of the edges of the blade in order to at the end

SP

|

CO O5 1

processing during the last cycle of adjusting the size of the interelectrode gap formed a closed loop corresponding to the shape of the blade.

The increase in the width of parts 1 and 2 by the value of 4-5 interelectrode gaps is due to the need to obtain the size along the chord of the pen blade and is determined experimentally. In most cases, the chord size tolerance is 0.2-0.4 mm, and the interelectrode gap is 0.1-0.15 mm. In special cases, when the tolerance on the size of the chord is tightened, it is necessary to tighten the tolerance for the width of parts 1 and 2.

The method of manufacturing the tool electrodes is carried out as follows. 1 Initially, machining is used to make blanks of parts 1 and 2 and, plates 4.5 and 6.7. Preparations of overlays 4.5 and 6.7 in the form of two solid strips are mounted on a cut-out electroerosive machine and cut with a wire over surfaces formed by perpendiculars reconstructed from contact points straight parallel to the direction of electrical supply after processing parts 1 and 2 by the method of reverse polarity they are removed from the machine and plates 4–7 are placed on the side surfaces so that the surfaces 9 of the slit 9 protrude beyond the working surfaces of the parts 1 and 2 half the thickness of the respective edges of the blade (Fig. 1). Assembled electrodes-tools installed on the machine and proceed to the processing of the blades.

1 ° The use of the method of manufacturing electrode tools makes it possible to drastically reduce the laboriousness of manufacturing electrode tools and, since the processing of electrode tools is inverse

15 polarities are carried out on the same machine on which the blades are made, to increase the useful life of the machines for electrochemical machining of the blades.

20

Claims (3)

1. A method of manufacturing electrode tools for dimensional electrochemical machining, including electrochemical dimensional machining of working surfaces of instruments to the edges of a blade blade, using the method of reverse polarity, draft, each into two pads (Fig. 2). The workpieces of parts 1 and 2 are installed on the machine for an ECHO pen blades, where their working surfaces are processed by the method of reverse polarity and fit-up is made according to the results of processing test pieces. If during processing of working surfaces of parts 1 and 2 by the method of reverse polarity and subsequent processing of the blades, electrolyte is pumped across the longitudinal axis of the blade existing when pumping electrolyte through the interelectrode gap, characterized in that, in order to avoid etching the junction surfaces of the instrument electrodes with removable metal plates, when forming the working surfaces of the instrument electrodes, technological side plates of dielectric material are installed on them after forming the working surfaces of the electrode on the fixture 10 for the installation of 35 instruments, replace them with metal ones. blades install fixed technological plates 11 of a dielectric material, one of the surfaces of each of which forms the entry path 2. A method according to claim 1. characterized in that the closing surfaces of the metal plates are set protruding with respect to the working surfaces of the electrolyte electrolyte outlet from the interelectrodes-tools at half the thickness of the core — o, /, ––– fi „finafWr. and the cymbals of the reference blade and rigidly mounted on the side surfaces of the tool electrodes. 3. The method according to claim 1, wherein gap (Fig. 3). If, however, when machining the working surfaces of parts 1 and 2 by the method of reverse polarity and subsequent processing of the blades, electrolyte is pumped along the longitudinal axis pen blades, then on the side surfaces- 45 that the technological linings are rigidly attached These parts 1 secure the plates 12 of dielectric material so that when parts 1 and 2 are moved during processing, the plates 12 slide along the side surfaces of the part 2 (Fig. 4) to the side surfaces of one electrode tool, while allowing them to move along a sliding fit relative to the side surfaces of the other electrode tool. After machining parts 1 and 2, they are removed from the machine by the method of reverse polarity and lining 4-7 is installed on the side surfaces so that the closing surfaces 9 protrude beyond the working surfaces of parts 1 and 2 half the thickness of the respective edges of the blade (Fig. 1). Assembled electrodes-tools installed on the machine and proceed to the processing of the blades. ° Using the method of manufacturing electrode tools makes it possible to drastically reduce the laboriousness of manufacturing electrode tools and, since the processing of electrode tools is inverse polarities are carried out on the same machine on which the blades are made, to increase the useful life of the machines for the electrochemical treatment of blades. Invention Formula 1. A method of manufacturing electrode tools for dimensional electrochemical machining, including electrochemical dimensional machining of working surfaces by the method of reverse polarity, existing when pumping electrolyte through the interelectrode gap, characterized in that, in order to avoid etching the junction surfaces of the instrument electrodes with removable metal plates, when forming the working surfaces of the instrument electrodes, technological side plates of dielectric material are installed on them forming the working surfaces of electrotool instruments, are replaced by metal ones. tools, replaced by metal. 2. The method according to claim 1. characterized in that the closing surfaces of the metal plates are set up protruding relative to the working surfaces of the electrical technology that the technological linings are rigidly fixed to the side surfaces of one electrode tool, while allowing them to move along a sliding fit relative to the side surfaces of the other electrode tool. 3898 (2-15) a0 5 898 (2-2,5) aff Fig FIG. 2 FIG L Fig.Z