CN219837544U - A centrifugal polishing device for the inner wall of a rotary body based on force rheology polishing technology - Google Patents

Abstract

The utility model belongs to the field of ultra-precision machining, and specifically relates to a centrifugal polishing device for the inner wall of a rotation based on force rheological polishing technology. , the telescopic rod mounting body is arranged on the rotating shaft, the telescopic rod telescopically slides and fits on the telescopic rod mounting body, the polishing piece is arranged on one end of the telescopic rod facing away from the axis of the rotating shaft, and the polishing piece is located outside the telescopic rod mounting body , used to polish the workpiece. This utility model uses a mechanical structure, and the polishing process is stable and controllable. It can improve the surface finish, flatness, flatness and other indicators of the workpiece in a short period of time, and the surface finish after polishing is high; The required equipment is relatively simple and easy to obtain, and the polishing cost is low, which can effectively save production costs.

Description

A rotary inner wall centrifugal polishing device based on force rheology polishing technology

Technical field

The utility model belongs to the field of ultra-precision machining, and specifically relates to a centrifugal polishing device for the inner wall of a rotary body based on force rheological polishing technology.

Background technique

Rotating shafts, drums, turbine blades, aircraft engine rotors, automobile engine valve seats and other parts whose inner walls are in the shape of a rotary body, as core components of modern industrial production, require high surface quality and precision to ensure their normal operation. and service life. These parts generally have complex internal cavity shapes and difficult to access tools. If traditional surface treatment methods are used, such as mechanical processing and chemical corrosion, it will bring about problems such as low processing accuracy, low efficiency, and environmental pollution.

Based on the above problems, this application proposes a centrifugal polishing device for the inner wall of a rotor based on force rheological polishing technology. It can not only improve the quality and accuracy of the surface of parts, extend the service life of parts, but also reduce processing costs and environmental pollution. Promoting the development of modern industry has a positive role in promoting.

Utility model content

In order to make up for the shortcomings of the existing technology, the present invention provides a technical solution of a centrifugal polishing device for the inner wall of a rotary body based on force rheological polishing technology.

A centrifugal polishing device for the inner wall of a rotation based on force rheological polishing technology, including a rotating shaft, a telescopic rod mounting body, a telescopic rod and a polishing sheet. The rotating shaft is used to cooperate with motor transmission, and the telescopic rod mounting body is arranged on the rotating shaft. , the telescopic rod telescopically slides and fits on the telescopic rod installation body, the polishing piece is arranged at one end of the telescopic rod facing away from the axis of the rotating shaft, and the polishing piece is located outside the telescopic rod installation body to polish the workpiece.

Further, the telescopic rod mounting body has an inner cavity for slidingly inserting the telescopic rod.

Further, the telescopic rod mounting body is a sleeve structure, on which two telescopic rods are symmetrically arranged.

Furthermore, the telescopic rod mounting body is detachably connected to a limiting piece, and when the telescopic rod extends out of the telescopic rod mounting body to the maximum stroke, it blocks the limiting piece.

Further, a telescopic rod head is provided at one end of the telescopic rod close to the axis of the rotating shaft. The outer diameter of the telescopic rod head is larger than the outer diameter of the telescopic rod body. The telescopic rod head is used to block the stopper. catch.

Furthermore, the telescopic rod mounting body is provided with a screw hole communicating with the inner cavity, and the limiting member is screwed to the screw hole.

Further, the limiting member is a screw.

Further, a counterweight is provided at one end of the telescopic rod facing away from the axis of the rotating shaft.

Further, the polishing surface of the polishing sheet is an arc surface.

Compared with existing polishing methods, the advantages of this utility model are:

1) This utility model uses a mechanical structure to polish the complex inner cavity of the part. The polishing process is stable and controllable, and can improve the surface finish, flatness, flatness and other indicators of the workpiece in a short period of time. , the surface finish after polishing is high;

2) The equipment required by this utility model is relatively simple and easy to obtain, and the polishing cost is low, which can effectively save production costs;

3) This utility model is based on force rheology polishing technology. Under the action of polishing fluid, the surface roughness of the workpiece is greatly reduced, ensuring surface accuracy.

Description of the drawings

Figure 1 is a schematic structural diagram of the utility model;

Figure 2 is a cross-sectional view of the utility model;

Figure 3 is a cross-sectional view of the utility model in use;

Figure 4 is a schematic structural diagram of parts polished using the present utility model.

Among them: 1-Rotating shaft, 2-Telescopic rod mounting body, 3-Telescopic rod, 4-Counter weight, 5-Workpiece, 6-Base, 7-Polishing piece, 8-Polishing fluid.

Detailed ways

In the description of the present invention, it should be understood that the terms "one end", "other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end The orientation or positional relationship indicated by "part", "length", "outer end", etc. are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply what is meant. Devices or components must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations of the invention.

The utility model will be further described below in conjunction with the accompanying drawings.

Please refer to Figures 1 to 3. A centrifugal polishing device for the inner wall of a rotor based on force rheology polishing technology, including a rotating shaft 1, a telescopic rod mounting body 2, a telescopic rod 3 and a polishing sheet 7. The rotating shaft 1 is driven by a motor, The telescopic rod mounting body 2 is fixed on the lower end of the rotating shaft 1, the telescopic rod 3 telescopically and slidingly fits on the telescopic rod mounting body 2, the polishing piece 7 is arranged on one end of the telescopic rod 3 facing away from the axis of the rotating shaft 1, and the polishing piece 7 is located on the telescopic rod mounting body 2Exterior, used to polish the workpiece.

Continuing to refer to Figure 2, the telescopic rod installation body 2 is a sleeve structure, the middle of which is connected to the rotating shaft 1, and has an inner cavity for slidingly inserting the telescopic rod 3. Both ends of the inner cavity are open, and two symmetrical ends are provided in the inner cavity. 3 telescopic poles.

In some embodiments, the telescopic rod installation body 2 can also be a disc or other structure, and the number of telescopic rods 3 and polishing discs 7 installed can also be set as needed.

Continuing to refer to Figure 2, a telescopic rod head 300 is provided at one end of the telescopic rod 3 close to the axis of the rotating shaft 1. The outer diameter of the telescopic rod head 300 is larger than the outer diameter of the main body of the telescopic rod 3. The shape and size of the telescopic rod head 300 and the inner cavity are just right. Matching is the main sliding fitting part. A step structure is formed between the telescopic rod head 300 and the main body of the telescopic rod 3. A screw hole connected to the inner cavity is provided on the side wall of the telescopic rod installation body 2, and a limiter is screwed on the screw hole. Part 9, the limiter 9 partially extends into the inner cavity. When the telescopic rod 3 extends to its maximum stroke, the limiter 9 blocks the above-mentioned step structure to prevent the telescopic rod 3 from falling off, and also facilitates the telescopic rod 3. Disassembly and assembly.

Among them, the limiting member 9 is preferably a screw.

Referring further to Figure 2, a counterweight 4 is provided at one end of the telescopic rod 3 facing away from the axis of the rotating shaft 1.

Specifically, the telescopic rod 3 has a groove, and a fixed sleeve is connected to the groove. The counterweight 4 is placed in the groove and fixed with the fixed sleeve. The function of the counterweight 4 is to make the centrifugal polishing device balanced and stable, so that it can run more smoothly during use.

Furthermore, the polishing surface of the polishing sheet 7 is preferably an arc surface. In addition, the polishing disc 7 can be replaced according to the shape of the surface to be polished, so that the polishing disc 7 and the surface to be polished can fit better.

Furthermore, the telescopic rod 3 is placed horizontally and is highly tolerant of the surface to be polished, and is suitable for polishing the inner walls of most irregular rotating bodies.

The utility model drives the rotating shaft 1 through the speed-regulating motor to drive the telescopic rod installation body 2 to rotate. The telescopic rod 3 is located in the telescopic rod installation body 2 and can realize axial movement, and a counterweight 4 is provided outside the telescopic rod 3. When the telescopic rod mounting body 2 rotates around the fixed axis, the telescopic rod 3 will be driven by centrifugal force to extend outward, so that the polishing piece 7 is close to the surface to be polished.

As shown in Figure 1, the utility model is initially shrunk to its smallest volume. When polishing is required, the utility model is extended into the center of the rotary body, as shown in Figure 3, and the speed regulating motor is started to work.

During polishing, the polishing liquid 8 is first poured into the workpiece 5. The polishing liquid 8 has a shear thickening effect. Then the utility model is inserted into the workpiece 5, as shown in Figure 3, and the polishing liquid 8 is squeezed and raised. After starting the speed-regulating motor, the polishing sheet 7 will rotate against the inner wall of the workpiece 5, and there is 1~ 2mm gap, when the rotation speed reaches 200rpm, polishing fluid 8 will fill the gap. Due to the relative movement between the workpiece 5 and the polishing sheet 7, a shear thickening area will be formed at the contact surface between the polishing fluid 8 and the inner surface of the workpiece 5. As shown in the partial enlargement of Figure 3, the polishing fluid 8 in this area is wrapped in it. The abrasive grains remove the inner surface material of the workpiece 5, rapidly reducing the surface roughness while ensuring the shape accuracy of the workpiece 5.

The utility model is used with a base 6. The base 6 can cover the workpiece 5. If the workpiece 5 is open at one end, it can be used to fix the workpiece 5. If the workpiece 5 is open at both ends, it can be used to seal one end of the workpiece 5 to achieve polishing.

This implementation case is polished. The specific polishing parameters are shown in Table 1.

Table 1: Experimental conditions

Workpiece diameter 10mm Workpiece material 45 # steel polishing speed 60rpm Abrasive grains Al ₂ O ₃ , SiC, diamond, etc. Processing time 60s

As shown in Figure 4, after polishing the parts using the present invention, the surface roughness and accuracy have been greatly improved. Compared with traditional abrasive flow polishing technology, the improvement of this polishing method greatly improves the processing effect.

Table 2: Processing results

In summary, during the polishing process using this polishing device, the surface can be better filled and polished by using polishing liquid, thereby significantly improving surface roughness and precision and achieving better processing results. At the same time, using polishing fluid for polishing can also avoid some surface defects and roughness problems caused by traditional abrasive flow polishing methods.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that : It is still possible to modify the technical solutions recorded in the foregoing embodiments, or to equivalently replace some or all of the technical features; and these modifications or substitutions do not deviate from the essence of the corresponding technical solutions from the embodiments of the present utility model. Scope of technical solutions.

Claims (9)

1. The utility model provides a gyrorotor inner wall centrifugation burnishing device based on power rheology burnishing technique, its characterized in that includes pivot (1), telescopic link installation body (2), telescopic link (3) and polishing piece (7), pivot (1) are used for cooperating with motor drive, telescopic link installation body (2) set up on pivot (1), telescopic link (3) flexible sliding fit is on telescopic link installation body (2), polishing piece (7) set up in telescopic link (3) back pivot (1) axle center one end to polishing piece (7) are located telescopic link installation body (2) outside, are used for polishing the work piece.

2. The centrifugal polishing device for the inner wall of the revolving body based on the force rheological polishing technology according to claim 1, wherein the telescopic rod mounting body (2) is provided with an inner cavity for sliding insertion of a telescopic rod (3).

3. The centrifugal polishing device for the inner wall of the revolving body based on the force rheological polishing technology according to claim 2, wherein the telescopic rod mounting body (2) is of a sleeve structure, and two telescopic rods (3) are symmetrically arranged on the telescopic rod mounting body.

4. The centrifugal polishing device for the inner wall of the revolving body based on the force rheological polishing technology according to claim 2, wherein the telescopic rod mounting body (2) is detachably connected with a limiting piece (9), and when the telescopic rod (3) extends out of the telescopic rod mounting body (2) to the maximum stroke, the telescopic rod mounting body is blocked with the limiting piece (9).

5. The centrifugal polishing device for the inner wall of the revolving body based on the force rheological polishing technology according to claim 4, wherein a telescopic rod head (300) is arranged at one end, close to the axis of the rotating shaft (1), of the telescopic rod (3), the outer diameter of the telescopic rod head (300) is larger than that of the main body of the telescopic rod (3), and the telescopic rod head (300) is used for being in blocking connection with the limiting piece (9).

6. The centrifugal polishing device for the inner wall of the revolving body based on the force rheological polishing technology according to claim 4, wherein the telescopic rod mounting body (2) is provided with a screw hole communicated with the inner cavity, and the limiting piece (9) is screwed on the screw hole.

7. The centrifugal polishing device for the inner wall of the revolving body based on the force rheological polishing technology according to claim 6, wherein the limiting piece (9) is a screw.

8. The centrifugal polishing device for the inner wall of the revolving body based on the force rheological polishing technology according to claim 1, wherein one end of the telescopic rod (3) back to the axle center of the rotating shaft (1) is provided with a balancing weight (4).

9. The centrifugal polishing device for the inner wall of the revolving body based on the force rheological polishing technology according to claim 1, wherein the polishing surface of the polishing sheet (7) is an arc surface.