KR100598009B1 - Making method of vane for compressor - Google Patents

Abstract

The present invention relates to a method of manufacturing a vane that is installed in a cylinder of a compressor and serves to increase pressure when compressing a fluid. More particularly, the present invention relates to a method of manufacturing a vane. The method of manufacturing compressor vanes, which is made of coils or round rods rolled iron plate of a certain width and manufactured by the simple work process to avoid cost reduction and productivity. It is about.

The present invention is a cutting process for cutting a coil or iron plate having a predetermined width to a proper width in the longitudinal direction, a roll forming or drawing process for forming a curved portion or a perpendicular surface on both ends of the cut iron plate, and the roll forming or The recoiling process or the raw material cutting process of rolling the iron plate after drawing process in coil form or cutting into the raw material of a certain length, and the cutting and the groove of the raw material which has undergone the recoiling process or cutting process according to the length of the bain A press process for molding, a turning process for precisely processing all the exteriors or grooves of the product subjected to the press process, and a work process for sequentially heat treatment and polishing the products subjected to the turning process.

Description

Manufacturing method of compressor vane {Making method of vane for compressor}

1 is a cross-sectional view of a conventional compressor cylinder chamber

2 is a perspective view of a conventional general vane

Figure 3 is a manufacturing process of the conventional compressor vane

Figure 4 is a manufacturing process of the bain to which the present invention is applied

5 to 6 is a manufacturing process diagram of another embodiment bain of the present invention

[Explanation of symbols on the main parts of the drawings]

1: compressor 2: cylinder chamber 4: vane

6: bend 8: groove

The present invention relates to a method of manufacturing a vane that is installed in a cylinder of a compressor and serves to increase pressure when compressing a fluid. More particularly, the present invention relates to a method of manufacturing a vane. Manufacture of compressors for compressors that can improve productivity as well as cost reduction by manufacturing vanes through a simple work process, using coils or round rods rolled iron plate of a certain width away from the conventional method of manufacturing vanes. It is about a method.

In general, a compressor is a mechanical device that compresses gas by using a vane or rotor rotation or a reciprocating motion of a piston so that the pressure after compression is twice or more than before compression, or the earth output after compression is 1 kg / cm 2 or more.

The compressor 1 is provided with a plurality of vanes 4 rotating together with the eccentric rotor 3 in the cylinder chamber 2 as shown in FIG. 1, by the rotational force of the eccentric rotor 3 and the restoring force of the spring. The plurality of vanes 4 are pushed toward the inner circumferential surface of the cylinder chamber 2 to maintain the airtightness between the cylinder chamber 2 and the vanes 4.

That is, the vane 4 is pushed in the direction of the inner circumferential surface of the cylinder chamber 2 from the axial center 5 of the eccentric rotor 3 by the restoring force of the spring having the elastic force and the action force by the rotational angular velocity caused during the high speed rotation. It was to maintain the airtightness necessary for suction and compression.

This vane 4 is easy to be in close contact with the inner circumferential surface of the cylinder chamber 2, as shown in Figure 2 is easy to rotate and to form a curved portion 6 in the contact surface in order to reduce the friction force during rotation, the curved portion 6 of The other side forms a vertical surface 7, but forms a groove 8 so that a spring can be supported at the central portion of the vertical surface 7.

Conventionally, a forging rod is used as a material for manufacturing the bain 4, and a process of melting scrap iron in a three-step furnace to make a rod, and melting the rod in a four-step furnace. Through the process of making a high-speed tool steel, and the process of making the high-speed tool steel to a forging bar, the forged bar, which is a material for manufacturing the vane 4, is finally produced.

Such forged rods are all used as a material for manufacturing Bain 4, although all of them are very expensive as imported materials.

Conventionally, the first rolling process for making the forged bar into the form of a square bar as the manufacturing process diagram of Figure 3 using the expensive forged bar as a material, the hot rolling process for secondary rolling the square bar, and the hot rolling process A raw material cutting step of cutting a rough square bar into a plate-like raw material, a turning step of turning a plate-shaped raw material that has been subjected to the raw material cutting step, and cutting the raw material that has been subjected to the turning step into a single piece A single part cutting process for forming a bent portion on one side, a grooving process for drilling a groove supported by a spring in the single part that has undergone the single part cutting process, a heat treatment step for heat treating the single part that has undergone the groove processing, and the heat treatment The vane was manufactured through a complex multi-step process of grinding a single piece of vane to suit the end use.

Therefore, the conventional manufacturing method of bain is a problem that the production cost is high due to a large number of work processes using expensive imported materials, and a lot of time is deteriorated, resulting in a decrease in productivity.

The present invention is a simple work process using a coil or iron plate or round bar, round bar rolled in a state of iron plate having a certain width in order to overcome the problems with the conventional manufacturing method as described above The main object of the invention is to provide a manufacturing method of the bain that can improve the productivity by reducing the production time as well as cost reduction by manufacturing the bain through.

The present invention for achieving the desired object is a cutting process for cutting a coil or iron plate having a predetermined width to a proper width in the longitudinal direction, and roll forming or drawing process for forming a curved portion or a right angle surface on both ends of the cut iron plate And a recoiling process or a raw material cutting step of rolling the iron plate that has undergone the roll forming or drawing process in a coil form or cutting into a raw material of a predetermined length, and a length of vaning the raw material that has undergone the recoiling process or cutting process. Press process for cutting and forming grooves according to the cutting process, a turning process for precisely processing all of the exterior or groove portion of the product which has been subjected to the press process, and a work process for sequentially heat treatment and polishing of the product subjected to the turning process. The technical manufacturing method including this is taken.

In addition, another method of the present invention for achieving the desired object is a rolling process for forming a curved portion or a right angle on the right width, thickness, both ends by using a round bar or wire (a material in which the round bar is rolled in the form of a coil) and Roll forming or drawing process for more precisely forming the thickness dimension of the iron plate subjected to the rolling process, and the recoiling process or circle for rolling the iron plate in the form of a coil or cutting into a raw material of a certain length A material cutting process, a press process for cutting and forming grooves of the raw materials that have undergone the recoiling process or the cutting process in accordance with the length of the bain, and precisely processing all of the exterior parts or grooves of the product subjected to the press process Another technical manufacturing method including a turning process and a work process of sequentially heat treating and polishing a product subjected to the turning process are devised. do.

Hereinafter, a manufacturing method of a preferred embodiment for achieving the object of the present invention will be described.

First of all, the present invention actively solves the problems caused by the manufacturing method of bain using forged rods, which are expensive imported materials, using coils rolled in a general steel plate or a steel plate having a certain width, or a general round bar or Wire rod is used as a material, and the steel plate, coil, round bar, and wire rod are used as materials to manufacture desired vanes in a short time through a simple work process. do.

In the manufacturing method of the compressor vane according to the present invention will be described in detail step by step for the manufacturing method using a steel plate or coil (Coil) as a material.

(1) Slitting process

Coil in the state of general iron plate or wide iron plate having a certain width is cut in a number of widths according to the product specification with a small width in the longitudinal direction.

(2) Roll Forming or Drawing Process

The steel plate cut in the longitudinal direction is passed through the rolls in stages or through drawing, to precisely measure the thickness, and to form a curved portion at one end surface to facilitate close contact with the inner circumferential surface of the cylinder chamber, and to the right side at the other side of the curved portion. To form.

(3) Recoiling or raw material cutting process

Roll-forming process rolls the iron plate with curved parts and right angles on both ends in the form of a coil so that it can be easily handled, or draws the steel plate with curved parts and right angles on both ends through drawing process. Cut into raw materials with large specifications (eg 6m, 4m).

(4) Press process

After recoiling process, the raw material rolled up in coil form is released to cut the width and length of the finished product, and the groove is formed or the steel sheet cut to a certain standard through the raw material cutting process is cut to the length of the finished product. At the same time, the groove is formed.

(5) turning process

All the exteriors of the products pressed through the pressing process are turned using a cutting tool.

(6) heat treatment process

Finally, heat treatment is performed to improve the mechanical properties of the product after turning.

In this heat treatment process, the strength and wear resistance of the vane are improved.

(7) Polishing process

The heat treatment process improves the dimensional accuracy of the products with improved mechanical properties and at the same time polishes them for the end use.

As described above, the manufacturing method of the present invention using an iron plate or a coil (coil) can be linked to a press process after the iron plate cut in the longitudinal direction through a cutting process and sequentially undergoes a roll forming process and a recoiling process. The steel sheet cut in the direction is subjected to the drawing process and the raw material process sequentially and then connected to the pressing process in consideration of the working conditions can be carried out in various ways.

In other words, the manufacturing method of the present invention using an iron plate or a coil consists of a "cutting process → roll forming process → recoiling process → press process → turning process → heat treatment process → polishing process,” while the roll forming process and recoiling process. Instead of the process, the drawing process and the raw material cutting process can be applied. The cutting process → drawing process → raw material cutting process → press process → turning process → heat treatment process → polishing process.

Next, a manufacturing method of round bar or round bar as a raw material will be described in detail for each process as shown in FIG. 5.

(1) rolling process

After rolling the round bar conforming to the standard of the product or the round bar in which the round bar is rolled in the form of a coil, hot rolling is performed to form a width part, a curved part or a right angled surface, the product subjected to the hot rolled product is more precisely appropriate at room temperature. Cold roll to thickness.

Here, the rolling process is performed by a combination of heat and cold, but is not limited thereto, and may be selectively performed either of heat and cold rolling.

(2) Roll Forming or Drawing Process

The product (iron plate) formed through the rolling process is passed through the rolls in stages, or the thickness is precisely drawn through drawing, and a curved portion is formed at one end surface to facilitate close contact with the inner circumferential surface of the cylinder chamber. The other side forms a right angle surface.

(3) Recoiling or raw material cutting process

Roll-forming process rolls the iron plate with curved parts and right angles on both ends in the form of a coil so that it can be easily handled, or draws the steel plate with curved parts and right angles on both ends through drawing process. Cut into raw materials with large specifications (eg 6m, 4m).

(4) Press process

After recoiling process, the raw material rolled up in coil form is released to cut the width and length of the finished product, and the groove is formed or the steel sheet cut to a certain standard through the raw material cutting process is cut to the length of the finished product. At the same time, the groove is formed.

(5) turning process

All the exteriors of the products pressed through the pressing process are turned using a cutting tool.

(6) heat treatment process

Finally, heat treatment is performed to improve the mechanical properties of the product after turning.

In this heat treatment process, the strength and wear resistance of the vane are improved.

(7) Polishing process

The heat treatment process improves the dimensional accuracy of the products with improved mechanical properties and at the same time polishes them for the end use.

The manufacturing method of the present invention using a round bar or wire as described above is a manufacturing process consisting of `` rolling process → roll forming process → recoiling process → pressing process → turning process → heat treatment process → polishing process '', the roll forming process and recoil Instead of the ring process, the desired process is manufactured through a manufacturing process consisting of a rolling process, a drawing process, a raw material cutting process, a press process, a turning process, a heat treatment process, and a polishing process in which a drawing process and a raw material cutting process are applied. On the other hand, it is possible to produce the desired bain through the manufacturing process as shown in FIG.

That is, according to the manufacturing process diagram as shown in Figure 6, by forming the appropriate width and thickness, the curved portion, the rectangular surface more precisely in the rolling process, a separate roll forming process or drawing process can be omitted, after the rolling process recoiling process, By sequentially going through the pressing process, the turning process, the heat treatment process and the polishing process, it is possible to manufacture the desired vane.

On the other hand, the manufacturing process of the present invention made of iron or coil (coil), as well as round bar or round bar (Round Bar) material is connected to the heat treatment process immediately skipping the next step turning process by pressing more precisely during the press process It becomes possible.

 The present invention can be manufactured by a simple work process made of a coil or round bar, round bar rolled in a general steel plate or a steel plate of a certain width, excluding forged rods that are expensive imported materials As a result, cost reduction and manufacturing time can be shortened, thereby significantly improving productivity.

Claims (5)

A cutting step of cutting the coil rolled in the state of an iron plate or a steel plate of a predetermined width to an appropriate width in the longitudinal direction; Roll forming or drawing process for passing the iron plate subjected to the cutting process step-by-step roll or forming a curved portion or a right angle surface on both end surfaces through drawing; A recoiling process or a raw material cutting process of rolling the iron plate which has been subjected to the roll forming process in a coil form or cutting the iron plate which has undergone the drawing process into a raw material of a predetermined length; A pressing step of cutting and forming grooves of the raw materials that have undergone the recoiling process or raw material cutting process to fit the length of the finished product; A turning step of turning the entire exterior of the product which has been subjected to the pressing step; A heat treatment process of improving the strength and wear resistance by heat-treating the finished product after the turning process; And a polishing step of polishing the finished product after the heat treatment step to suit the end use. After hot heat is applied to the round bar or wire, it is processed to an appropriate width or thickness, and hot rolling is performed to form curved portions or right angles on both ends, and then the cold rolled product is cold rolled to an appropriate thickness more precisely at room temperature. Rolling process; A roll forming or drawing process of passing the molded product (iron plate) formed through the rolling process through a step roll or forming curved portions or right angles on both end surfaces through drawing; A recoiling process or a raw material cutting process of rolling the iron plate which has been subjected to the roll forming process in a coil form or cutting the iron plate which has undergone the drawing process into a raw material of a predetermined length; A pressing step of cutting and forming grooves of the raw materials that have undergone the recoiling process or raw material cutting process to fit the length of the finished product; A turning step of turning the entire exterior of the product which has been subjected to the pressing step; A heat treatment process of improving the strength and wear resistance by heat-treating the finished product after the turning process; And a polishing step of polishing the finished product after the heat treatment step to suit the end use. delete delete delete

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