SU1696197A1 - Method of electrochemical formation of regular relief - Google Patents

Abstract

The invention relates to the field of engineering, in particular to the electrochemical treatment of metals. The purpose of the invention is to expand the technological capabilities and improve the performance of cutting relief formation. The formation of a regular relief is carried out by gradual removal of the allowance in each processing cycle. The treatment is carried out by moving the electrode tool after each processing cycle for the section length. The number of sections is equal to the number of stages of forming a profile. The working area of the tool electrode is reduced against the feed direction. 1 hp f-ly, 2 ill.

Description

The invention relates to the field of mechanical engineering, in particular to the electrochemical machining (ECM) of metals.

The purpose of the invention is to expand the technological capabilities of the ECHO method by increasing the range of formed profiles of regular terrain.

FIG. 1 shows the processing scheme; in fig. 2 - scanning the surface of the electrode tool.

The method is carried out by an electrode-tool consisting of an electrically conductive rod 1 with insulating material 2 deposited on the surface, in which holes 3 are made, forming sections of identical cathode sections 4. Rod 1 is connected to rod 5, on which the front base 6 is screwed, and with a rear base 7. In bases 6 and 7, holes 8 and 9 are cross-shaped for pumping electrolyte. Base 6 and 7 are in contact with the inner surface of the pipe 10, forming the interelectrode gap 11. On the inner surface of the pipe 10 after the ECHO is formed holes 12.

Processing is as follows.

The tool-tool rod 1, mounted on the rod 5, is positioned in front of the entrance to the hole to be machined, based on the front base 6 on the inner surface of the pipe 10, and on the rear base 7 on the conductor sleeve (not shown). The feed of the electrode tool through the rod 5 carries out its movement inside the pipe 10 by an amount determined by the inlet of the first section of the cathode sections and into the hole being machined. An electrolyte is discharged into the interelectrode gap 11 through the opening 8 through the opening 9. A technological voltage is applied to the cathode and the anode. During the time period D, OOs

yu about.

V,

When the well profile is formed by the formation of the profile of the holes 12 opposite the cathode sections, the electrode-tool is stationary. After the Burst At0 intervals, over which the profile of the hole 12 is formed with the depth of Dgc, the technopole voltage is turned off. Isolation 2 ensures the absence of an echocardiogram outside the wells 12. In the next period of time, a new displacement of the electrode, n the length of one section, occurs. The process voltage is turned on, the first section begins to process the next surface area, and the second section entered into the hole further forms a profile of holes 12 processed by the first section to a depth of 6h2. After a period of time, the voltage is disconnected. There is a nooe movement of the electrode tool, not the length of the section. Then the process is repeated. After the processing of the unit 12 by the last section of the cathode sections 4, their final profile is formed. Thus, as the tool electrode moves from the inlet of the pipe 10 to the outlet of the hole 12, it forms on its entire inner surface. When the cathode is fully buried about the hole, its basing is carried out on the inner surface of the hole using bases 6 and 7. Changing the diameters of the holes 3 s of insulator 2 and the 3X0 features, that is, zone-based with edge effects during processing, create brzop / g sphere-shaped wells.

Example. Method 3X0 was performed on the experimental setup EG-1M. It was carried out processing of stainless steel pipe with an internal diameter of 12 mm, a length of 1000 mm, a wall thickness of 2 mm. On the inner surface of the tubes, wells were made with a diameter of 5 mm, a depth of 0.5 mm, located on the forming surfaces with a step of 6.5 mm with an angle between the generators equal to 90 °.

Processing was carried out under the following conditions:

Current density

35

15% NaNOa + 85% H20

ten

A / CMZ Electrolyte, wt.%

Operating voltage, V

Pumping speed

electrolyte, m / s3

Initial value

interelectrode

clearance mm0,25

Working time

cycle, s90

C

five

0

five

0

The ECHO billet was produced with a electric tool, which is a cathode made in the form of a brass rod with a diameter of 11.5 mm with a working length of 60 mm and insulation of non-working sections with a 0.1 mm thick polyester film. The ends of the rod are attached with caprolon bases with channels for pumping electrolytes ha. The processing of the workpiece, which is the anode, was carried out by an evil to a kind and impediment, the cathode spot area of which varied from the direction of supply and had the following values: FI - 1b mm. F2 - 7.5 mm2, Рз 5.0 mm, where 1,2,3 is the section number. In each section were placed ds padts working areas, three steps on each generator. The program of the movement of the electrode tool was set with the help of the SMS P22-1M SMS. The CNC system ensured the removal of metal three times by incomplete input of the working part of the cathode to the hole in the swing and at the end of processing. By changing the shaking, the flow of which is electrically faulty, because the symbol v is processing. The electrolyte was carried out opposite to the direction of pulling.

A current conductor was provided at the anode along the right side of the X-just / pipe, at the cathode - r-spf, detz electronum bar.

 pyfc was based on a non-external surface of the SCF. Before processing the first, 1.g cut of pipes about was combined with the beginning of h; CTVI Electrode Instrument.

The measurements after the survey showed that the G-GS deviation from the form given about the prod-l was 0 03 mm at the ballpoint.

p, 32 UKM,

go corresponds

five

0

conditions for this product.

Use-chts; The ECHO method of regular relief allows the technology to be expanded in the form of ayiozhy by increasing the range of profiles formed, in addition to that, the accuracy and productivity of the processing increase.

Form of c 6 pt and 1. Method of electrochemical shaping of a regular relief by an electro-instrument-tool, cyclically moving along the surface, the working areas of which are located in the feed direction with a step of a regular relief, about m and h about and with the fact that, in order to expand the technological capabilities in the formation of specified relief profiles, the formation of each relief element is carried out by phased removal of the lepuska in each processing cycle of electrochromo-in with a tool with working sections , Equal to the number of stages forming the profile, the working area sections from section to section is reduced against the direction of feed of the electrode-tool and the electrode-tool after each treatment cycle is moved to the section length

 The method according to claim 1 and 1, that, in order to increase the productivity of processing, the processing, from the electrolyte tool in each section of the program, to their KJB nq. Matte-l i edyu npi this K /

five

Claims (2)

1, Sloss stektro hiti tokatoobrazovaniya rhesh / shrny ra / gefa electrode 0- nstru m e n to m, 1ι and to g. And with the C and are fixed along the processed surface, workers 50 sections of which are located in the feed direction with a step of regular relief, including: about the base and hem that. with the aim of expanding technological capabilities. when forming the specified profiles of the relief, the formation of each element of the relief is carried out by phased removal of the allowance for each processing cycle with an electrodynamic tool with working sections, the number of which is equal to the number of stages of forming the profile, at 5 'G96197 than the area of workers sections from section to section decreases against the direction of supply of the electrode-tool, and the power tool after each treatment cycle is moved to the length of the section. 5 2. The method according to π. 1, from l and ch and y u and I. l with that. what. in order to increase the processing productivity, the processing is carried out by an electrode-tool, in each section of which K rows of working sections ~ the same area are made, with! <> 2.