RU2554841C1 - Vg vokhmyanin's method of making long holes in parts - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to processing of materials and can be used for production of assembly units and parts with long channels of small cross-section, for example, in capillary articles, fluid or gas dispensers, refrigerators, etc. Proposed process consists in diving the part 1 into elements 2 and 3 wherein communicated recesses 4 and 5 are made to form a part of bore. Recesses 4 and 5 are spaced apart over their entire length. Turns of said recesses can be either smooth, or at right angle, or coiled. After making said recesses by whatever known methods, said elements 2 and 3 are rigidly coupled to make a single bore.

EFFECT: enhanced performances, uniform heating of part surface at heat carrier flow through said bore, unobstructed entry thereto and exit therefrom.

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Description

The invention relates to the field of material processing, and more specifically to instrumentation, including precision, and can be used in the development of structures and manufacturing techniques of components and elements, including long channels of a small cross-sectional area, in particular, in the technique of capillary products, nodes of controlled dosing of gas or liquid, in leakages of vacuum systems, in refrigeration technology, etc.

Known methods of processing a supersonic water jet with the introduction of abrasive additives (see the book - Hydraulic cutting of shipbuilding materials R.A. Tikhomirov, V.F. Babanin, E.N. Petukhov and others. - L .: Shipbuilding: 1987. - 164 from.).

A known method of drilling holes using abrasive-liquid jets (see Hashish M. Turning, milling and drilling with abrasive-waterjets. 9 ^th International Symposium on Jet Cutting Technology. Sendai, Japan: 4-6 October, 1988. Paper C2. Pp .113-131).

According to these schemes for producing holes using a supersonic abrasive-liquid jet, it directly affects the material being processed and, upon exiting the resulting hole, forms a side cavity, which leads to marriage, and the hole is non-circular.

A known method of drilling holes of small diameter in brittle material (see US Pat. No. 4,955,164, MKI ⁵ B24B 1/00, B24C 9/00 Method and apparatus for drilling small diameter holes in fragile material with velocity liquid jet / Hashish M., Cragen S ., declare. 06/15/89, publ. 09/11/90).

However, the known method has the following disadvantages. The practice of producing holes in sheet materials with a supersonic abrasive-liquid jet shows that when they are formed, it is not possible to accurately ensure the perpendicularity of the jet with the processed material. This leads to the fact that the spent suspension, leaving the resulting hole, flows around the newly incoming stream unevenly along its contour. This causes a groove to appear at the inlet of the hole, which is comparable to its diameter. Further movement of the jet in the resulting hole does not ensure the removal of the groove without significant changes in the size and shape of the hole.

Known methods for producing holes using electrical discharge machining (see Artamonov B.A., Volkov Yu.S. et al. Electrophysical and electrochemical metols for processing materials. M: Higher school, 1983; Livshits A.L. Electroerosive processing of metals. M .: Higher school, 1979; Poduraev V.N. and Kamalov V.S. Physical and chemical processing methods.M.: Mashinostroenie, 1973. 346 p.).

The most well-known and widespread method of producing holes is drilling — the formation by cutting chips of a through and a blind cylindrical hole in a solid material using a drill (see Polytechnical Dictionary / Editorial Board: A.Yu. Ishlinsky) (Ch. P50 ed.) And others. - 3rd ed., Revised. and add. - M .: Soviet Encyclopedia, 1989 .-- 656 p., S., P. 469).

All known methods do not allow to obtain very small (tenths, hundredths of a square millimeter) over the cross-sectional area of the hole of large length (from a few centimeters to several meters). Known methods do not allow to obtain holes of complex length.

There is a method of producing holes in the form of spirals in a part, including dividing the part into parts of the part, making recesses on the part elements corresponding to future holes, and rigidly connecting the part elements to each other to form a hole, wherein the part is divided to form the part elements as hollow cylinders or hollow truncated cones (see patent for the invention of the Russian Federation No. 2471602. CL B23P 15/00, 2013).

The disadvantage of this method is the limited functionality, so when passing the coolant through the hole, uniform heating of the side surface of the part is not ensured - as the coolant moves through the hole, the coolant gradually cools. In addition, the inlet and outlet of the hole are separated in space by a considerable distance, which is not always convenient technologically and during maintenance.

The technical result of the present invention is to expand the functionality by increasing the uniformity of heating the surface of the part when passing through the coolant hole, as well as ensuring the location of the entrance to the hole and exit from it side by side.

The technical result is achieved in that in order to obtain long holes in the part, including dividing the part into two parts of the part, making at least one element of the part of the recess corresponding to the future hole, and rigidly connecting the elements of the part to each other to obtain the hole, the recess is made in two interconnected adjacent channels, the channels along the entire length are located at the same distance from each other, while the turns of the channels can be made smooth and whether at a right angle, while the ropes along the entire length can be made in a spiral.

The proposed technical solution is illustrated by drawings, where Fig. 1 shows a detail in which a long hole is to be made, Fig. 2 shows a section along A-A (one option), Fig. 3 shows a section along A-A (second option) , Fig.4 is a section along aa (the third option).

Figure 1 shows the part 1, which is divided into elements 2, 3. The element 3 is made of interconnected adjacent ropes 4 and 5 (shown in bold by the bold line), forming part of the hole. Ropes 4 and 5 are all located at the same distance from each other. The turns of the channels can be either smooth (as shown in FIG. 2) or at right angles (as shown in FIG. 3), or performed in a spiral (as shown in FIG. 4). To obtain holes, for example, of circular cross-section or of an elliptical cross-section, channels 4 and 5 of FIGS. 2-4 are mirrored on element 2. After the channels 4 and 5 are made by any known methods, the elements 2 and 3 are rigidly fastened together to form a single hole, for example, if metal is used as part 1 material, by diffusion welding, if another material, then, for example, by gluing elements 2 and 3.

When passing the coolant through the hole in the part 1, the surface of the part is heated evenly due to the fact that with a warmer recess 4 there is a less heated recess 5.

Wider functionality by increasing the uniformity of heating the surface of the part when passing through the coolant hole, as well as providing the location of the entrance to the hole and exit from it side by side, is the advantage and advantage of the proposed technical solution compared to the prototype.

Claims (4)

1. A method of producing long holes in a part, including dividing the part into two parts of the part, characterized in that at least one part of the part is made two recesses corresponding to the future hole, interconnected and located along their entire length at the same distance from each other , and carry out a rigid connection of the elements of the part with each other to obtain the aforementioned holes. 2. The method according to p. 1, characterized in that the recesses are performed with smooth turns. 3. The method according to p. 1, characterized in that the recesses are performed with rotations located at right angles. 4. The method according to p. 1, characterized in that the recesses along their entire length are performed in a spiral.

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