Back pressure type fluid polishing equipment

Abstract

The utility model relates to the field of fluid polishing, in particular to back pressure type fluid polishing equipment which comprises a working table, an upper hydraulic assembly arranged at the upper end of the working table and a lower hydraulic assembly arranged at the lower end of the working table, and the upper end of the lower hydraulic assembly penetrates through the working table and is connected with a carrying table assembly arranged on the working table. A product to be polished is arranged on the carrying table assembly. During polishing, the upper hydraulic assembly abuts against the product downwards, the upper hydraulic assembly communicates with the lower hydraulic assembly through the product, the upper hydraulic assembly extrudes the fluid medium upwards, and when the fluid medium flows to the upper hydraulic assembly, the upper hydraulic assembly extrudes the fluid medium to provide back pressure. When the fluid medium flows upwards, the first piston moves upwards and provides downward pressure at the same time; when the fluid medium flows downwards, the second hydraulic cylinder moves downwards and provides upward pressure at the same time, so that the fluid medium always has large pressure, large friction is generated between the fluid medium and a product, and the polishing efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fluid polishing technical field, especially a kind of back pressure type fluid polishing equipment. BACKGROUND

[0002] In precision machining, the surface after machining such as turning, milling and grinding will produce tool marks, burrs and other surface damage, in addition, the wear of tool will also affect the surface performance of workpiece, which needs to be eliminated by polishing. For tubular workpieces, the traditional polishing method is low in efficiency, which is not conducive to mass production, and the polishing precision cannot be accurately controlled. The fluid medium polishing method can achieve the surface quality requirements at a lower cost and is suitable for mass production.

[0003] In the existing bidirectional fluid polishing equipment, during polishing, the upper hydraulic device extrudes the fluid medium downward, and the lower hydraulic device extrudes the fluid medium upward. In some polishing flow channels with large cross sections, the required pressure for effective grinding and polishing cannot be established, the fluid medium flows repeatedly but the polishing efficiency is very low, resulting in long polishing time and poor polishing effect. Therefore, how to establish effective flow channel pressure of fluid medium during polishing to improve polishing efficiency is a problem that needs to be considered by those skilled in the art. SUMMARY

[0004] The utility model aims at providing a back pressure type fluid polishing equipment to solve the problem of low polishing efficiency caused by small fluid medium pressure during polishing of large-diameter polishing flow channel in the prior art.

[0005] The technical scheme of the utility model is a back pressure type fluid polishing equipment, which comprises a workbench, an upper hydraulic assembly arranged at the upper end of the workbench and a lower hydraulic assembly arranged at the lower end of the workbench, the upper end of the lower hydraulic assembly penetrates through the workbench and is connected with a carrier assembly arranged on the workbench, and a product to be polished is arranged on the carrier assembly.

[0006] During polishing, the upper hydraulic assembly is in contact with the product downward, the upper hydraulic assembly is in communication with the lower hydraulic assembly through the product, the upper hydraulic assembly extrudes the fluid medium upward, and when the fluid medium flows to the upper hydraulic assembly, the upper hydraulic assembly extrudes the fluid medium to provide back pressure.

[0007] Preferably, the upper hydraulic assembly comprises an upper support, a first hydraulic cylinder and a driving device with a vertical driving direction, the driving device is fixedly arranged on the upper support, the driving end of the driving device is connected with the first hydraulic cylinder, and the first hydraulic cylinder can move in the vertical direction under the drive of the driving device.

[0008] Preferably, the driving device is provided with two driving devices, and the two driving devices are symmetrically arranged on the two sides of the first hydraulic cylinder.

[0009] The first hydraulic cylinder is fixedly connected with a connecting flange, and the driving device is connected with the first hydraulic cylinder through the connecting flange.

[0010] Preferably, the first hydraulic cylinder comprises a first cylinder body and a first piston connected with the first cylinder body, and the first piston is arranged at the upper end of the first cylinder body.

[0011] Preferably, the lower hydraulic assembly comprises a second hydraulic cylinder, and the second hydraulic cylinder comprises a second cylinder body and a second piston connected with the second cylinder body; the second piston is arranged directly below the first hydraulic cylinder.

[0012] The second piston is connected with the lower end of the second cylinder body, and the upper end of the second cylinder body is connected with the workbench.

[0013] Preferably, the carrier assembly comprises a rotating device arranged on the workbench, and a jig connected with the rotating device, wherein the jig is provided with at least two through carrier holes, and when the rotating device drives the jig to rotate, the carrier holes are sequentially connected with the second hydraulic cylinder.

[0014] Preferably, during polishing, the second piston extrudes the fluid medium in the second cylinder body, and the product flows into the first cylinder body; and the first piston presses the fluid medium and moves upward.

[0015] Compared with the prior art, the back pressure type fluid polishing equipment has the following advantages:

[0016] (1) During polishing, when the fluid medium flows upward, the first piston moves upward while providing downward pressure; when the fluid medium flows downward, the second hydraulic cylinder moves downward while providing upward pressure, so that a large pressure always exists in the fluid medium during the polishing process of the product, the fluid medium and the product generate a large friction, and the polishing efficiency is greatly improved.

[0017] (2) The pressure of the back pressure can be controlled by monitoring the flow speed of the fluid medium, when the flow speed of the fluid medium is greater than a preset value, the pressure of the back pressure can be increased; when the flow speed of the fluid medium is less than the preset value, the pressure of the back pressure can be reduced, so that the flow speed of the fluid medium reaches the preset value, and the polishing efficiency and effect are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further described in connection with the drawings and embodiments:

[0019] Fig. 1 It is the structure schematic drawing of back pressure type fluid polishing equipment of the utility model;

[0020] Fig. 2 It is the internal structure schematic drawing of back pressure type fluid polishing equipment of the utility model.

[0021] Wherein: the workbench 1;

[0022] The upper hydraulic assembly 2, the upper support 21, the first hydraulic cylinder 22, the first cylinder body 221, the first piston 222, the driving device 23, the connecting flange 24;

[0023] The lower hydraulic assembly 3, the second hydraulic cylinder 31, the second cylinder body 331, the second piston 332;

[0024] The carrier assembly 4, the rotating device 41, the jig 42, the carrier hole 421. Specific implementation

[0025] The contents of the utility model will be further described in detail in combination with specific embodiments:

[0026] As Figs. 1-2 shown, the utility model is applied to fluid polishing operation, and the product to be polished is directly placed or placed through the corresponding mounting seat on the carrier hole, under the driving rotation of the rotating device, the carrier hole is rotated by 180 degrees to the upper side of the second cylinder body; the driving device drives the first hydraulic cylinder to move downward, so that the first cylinder body moves downward and abuts against the upper end of the product, so that the first cylinder body, the second cylinder body and the channel of the product to be polished jointly form a complete cavity, and the cavity can circulate air, but the fluid medium cannot overflow. Initially, the fluid medium is in the second cylinder body, and the first piston is at the lower end of the first cylinder body. The second piston moves upward and extrudes the fluid medium in the second cylinder body, so that the fluid medium flows through the product for polishing, and then flows into the first cylinder body; the fluid medium entering the first cylinder body abuts against the first piston, and at the same time, the first piston moves upward and abuts against the fluid medium, so that the fluid medium maintains a certain pressure in the flow process, so as to increase the friction between the fluid medium and the product when the fluid medium flows through the product, and improve the polishing efficiency. Similarly, when the fluid medium moves towards the second cylinder body, the first piston extrudes the fluid medium downward, and the second piston moves downward and simultaneously abuts against the fluid medium upward, so as to maintain the pressure of the fluid medium in the flow process and increase the friction between the fluid medium and the product, so as to achieve the purpose of improving the polishing efficiency. Specifically:

[0027] A back pressure type fluid polishing equipment, comprising a workbench 1, an upper hydraulic assembly 2 arranged at the upper end of the workbench 1 and a lower hydraulic assembly 3 arranged at the lower end of the workbench 1.

[0028] The upper hydraulic assembly 2 comprises an upper support 21, a first hydraulic cylinder 22 and a driving device 23 with a vertical driving direction, the driving device 23 is fixedly arranged on the upper support 21, the driving end of the driving device 23 is connected with the connecting flange 24 fixedly connected with the first hydraulic cylinder 22, and the first hydraulic cylinder 22 can be driven to move in the vertical direction through the connecting flange 24.

[0029] The first hydraulic cylinder 22 comprises a first cylinder body 221 and a first piston 222 connected with the first cylinder body 221, and the first piston 222 is arranged at the upper end of the first cylinder body 221.

[0030] The lower hydraulic assembly 3 comprises a second hydraulic cylinder 31, which comprises a second cylinder body 331 and a second piston 332 connected with the second cylinder body 331; the second hydraulic cylinder 31 is directly below the first hydraulic cylinder 22. The upper end of the second cylinder body 331, which is away from the second piston 332, is connected with a carrier assembly 4 arranged on the workbench 1 through the workbench 1, and the product to be polished is arranged on the carrier assembly 4.

[0031] The carrier assembly 4 comprises a rotating device 41 arranged on the workbench 1, and a jig 42 connected with the rotating device 41, wherein the jig 42 is provided with at least two through carrier holes 421, and the carrier holes 421 are sequentially connected with the second cylinder body 331 when the rotating device 41 drives the jig 42 to rotate.

[0032] In the embodiment, the size of the back pressure can be controlled according to the flow rate of the fluid medium. For example, when the fluid medium flows from the lower hydraulic assembly 3 to the upper hydraulic assembly 2, if the flow rate of the fluid medium is greater than the set value, the first piston 222 increases the downward low pressure, thereby increasing the back pressure of the fluid medium, so that the flow rate of the fluid medium reaches the set value, otherwise, if the flow rate of the fluid medium is less than the set value, the first piston 222 only reduces the back pressure of the fluid medium, so that the flow rate of the fluid medium reaches the set value.

[0033] The above embodiment is only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and it cannot limit the protection scope of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application, therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

Claims

1. A back pressure fluid polishing device, characterized in that: It includes a workbench, an upper hydraulic assembly arranged at the upper end of the workbench, and a lower hydraulic assembly arranged at the lower end of the workbench. The upper end of the lower hydraulic assembly passes through the workbench and is connected to the carrier assembly arranged on the workbench. The product to be polished is placed on the carrier assembly. During polishing, the upper hydraulic assembly presses downward against the product, and the upper hydraulic assembly is connected to the lower hydraulic assembly through the product. The upper hydraulic assembly squeezes the fluid medium upward, and when the fluid medium flows to the upper hydraulic assembly, the upper hydraulic assembly squeezes the fluid medium to provide back pressure.

2. The back pressure fluid polishing equipment according to claim 1, characterized in that: The upper hydraulic assembly includes an upper bracket, a first hydraulic cylinder and a driving device with a vertical driving direction. The driving device is fixedly arranged on the upper bracket, and its driving end is connected to the first hydraulic cylinder and can drive the first hydraulic cylinder to move in the vertical direction.

3. The back pressure fluid polishing equipment according to claim 2, characterized in that: There are two driving devices, which are symmetrically arranged on both sides of the first hydraulic cylinder; A connecting flange is fixedly connected to the first hydraulic cylinder, and the driving device is connected to the first hydraulic cylinder via the connecting flange.

4. The back pressure fluid polishing equipment according to claim 3, characterized in that: The first hydraulic cylinder includes a first cylinder body and a first piston connected to the first cylinder body, and the first piston is arranged at the upper end of the first cylinder body.

5. The back pressure fluid polishing equipment according to claim 4, characterized in that: The lower hydraulic assembly includes a second hydraulic cylinder, which includes a second cylinder body and a second piston connected to the second cylinder body; the second piston is located directly below the first hydraulic cylinder; The second piston is connected to the lower end of the second cylinder body, and the upper end of the second cylinder body is connected to the workbench.

6. The back pressure fluid polishing equipment according to claim 5, characterized in that: The platform assembly includes a rotating device arranged on the workbench, and a fixture connected to the rotating device. The fixture is provided with at least two penetrating carrying holes. When the rotating device drives the fixture to rotate, the carrying holes are sequentially connected to the second hydraulic cylinder.

7. The back pressure fluid polishing equipment according to claim 6, characterized in that: During polishing, the second piston squeezes the fluid medium in the second cylinder, and the fluid medium flows into the first cylinder through the product; the first piston presses the fluid medium and moves upward.

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