Electrolytic polishing device for part surface local treatment

Abstract

The utility model belongs to the technical field of part machining, and relates to an electrolytic polishing device for part surface local treatment, which comprises an anode structure assembly and a cathode structure assembly, the anode structure assembly comprises a liquid storage pipe and a brushing head arranged at one end of the liquid storage pipe, a hollow cavity of the liquid storage pipe is filled with electrolyte, the brushing head is filled with a flexible water storage material used for brushing the surface of a part, and the liquid storage pipe communicates with the brushing head, so that the electrolyte in the liquid storage pipe enters the brushing head and is absorbed by the flexible water storage material; a copper electrode is arranged in the liquid storage pipe in a penetrating mode, the head end of the copper electrode extends into the brushing head and is wrapped in the flexible water storage material, and the tail end of the copper electrode penetrates through the end of the liquid storage pipe to be connected with the positive electrode of the direct-current power source. The cathode structure assembly is connected with the cathode of the DC power supply. The device adopts a pen-shaped electrolytic polishing head, is provided with an electrolyte storage bin, and can continuously provide electrolyte. The grinding and polishing device is small in size, convenient to move and operate and suitable for grinding and polishing part surfaces and complex structures of large equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of parts processing, and in particular relates to an electrolytic polishing device for local processing of part surfaces. Background Art

[0002] During the mechanical manufacturing process, various processing methods, both individually and in combination, act on parts, generating residual stress inside the parts. This residual stress has a significant impact on mechanical parts or components, and therefore, it is necessary to measure the residual stress of mechanical parts. Currently, X-ray diffraction is a relatively accurate and commonly used method for measuring metal parts. In the process of measuring residual stress using X-ray diffraction, it is sometimes necessary to remove metal oxides and the like from the surface of the part to be measured, or to peel the part layer by layer to measure the stress gradient, which requires pretreatment of the part. Given the measurement principle of X-ray diffraction, mechanical processing methods such as cutting, milling, and grinding can have a significant impact on the residual stress of the part, resulting in inaccurate measurement results. It has now been proven that electrolytic polishing does not affect the residual stress of parts. Therefore, electrolytic polishing is generally used as the pretreatment method before measuring the residual stress of parts.

[0003] For small parts, electrolytic polishing can be performed by immersion. However, for larger parts or parts that cannot be moved at the processing or use site, a portable electrolytic polishing device is required for pretreatment before measuring residual stress. Summary of the Invention

[0004] In view of the defects of the above-mentioned prior art, the purpose of the present invention is to provide an electrolytic polishing device for local surface treatment of a part, which is used for electrolytic polishing of the local surface of the part to be tested before X-ray diffraction testing.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an electrolytic polishing device for local treatment of part surface, comprising an anode structural assembly and a cathode structural assembly; the anode structural assembly comprises a liquid storage tube and a brush head arranged at one end of the liquid storage tube, the hollow cavity of the liquid storage tube is filled with electrolyte, the brush head is filled with a flexible water storage material for brushing the surface of the part, the liquid storage tube and the brush head are connected, so that the electrolyte in the liquid storage tube enters the brush head and is absorbed by the flexible water storage material, a copper electrode is provided through the liquid storage tube, the head end of the copper electrode extends into the brush head and is wrapped in the flexible water storage material, and the end of the copper electrode passes through the end of the liquid storage tube and is connected to the positive pole of the DC power supply; the cathode structural assembly is connected to the negative pole of the DC power supply.

[0006] Furthermore, the liquid storage tube and the coating brush head are detachably connected via a connecting ring, which is assembled on the outer walls of the liquid storage tube and the coating brush head.

[0007] Furthermore, a plurality of fixed through holes are provided on the upper end cover of the liquid storage tube near one end of the brush head; a flow regulating orifice plate for controlling the flow of the electrolyte is provided between the liquid storage tube and the brush head, and a plurality of regulating through holes corresponding to the fixed through holes are provided on the flow regulating orifice plate, and the flow of the electrolyte is controlled by the staggered relationship between the fixed through holes and the regulating through holes.

[0008] Preferably, a handle for rotating the flow regulating orifice plate is provided on the outer peripheral surface of the flow regulating orifice plate, the connecting ring is plug-in connected or threadedly connected to the outer wall of the brush head and the liquid storage tube, and an adjustment groove for the handle to move is formed on the side wall of the connecting ring.

[0009] Preferably, the connecting ring is threadedly connected to the outer wall of the brush head and the liquid storage tube, and the flow regulating orifice plate is arranged inside the connecting ring.

[0010] Furthermore, the liquid storage tube is a cylindrical structure, and the brush head includes an integral cylindrical body and a frustum body. The outer diameter of the cylindrical body is consistent with the outer diameter of the liquid storage tube, and the large end face of the frustum body is connected to the cylindrical body, so that the small end face of the frustum body forms a closed structure. The two ends of the brush head are open, and a through accommodating groove is formed inside the brush head, and the flexible water storage material is filled in the accommodating groove.

[0011] Furthermore, an electrode hole for the copper electrode to pass through is provided at one end of the liquid storage tube away from the brush head, and a rubber sealing ring is sleeved on the copper electrode to seal the electrode hole on the outer end face of the liquid storage tube. The end of the copper electrode is threadedly connected to a nut, and the nut is tightened to fix the positive pole of the DC power supply between the rubber sealing ring and the nut.

[0012] Furthermore, an electrode sleeve is provided in the liquid storage tube, both ends of the electrode sleeve are integrally connected to the inner end surfaces of both ends of the liquid storage tube, and the copper electrode in the liquid storage tube is sealed in the electrode sleeve.

[0013] Furthermore, the flexible water storage material is absorbent cotton.

[0014] Furthermore, the cathode structural assembly includes a cathode magnet and a cathode connector, the cathode magnet and the cathode connector are magnetically connected and clamp the negative pole of the DC power supply, and the cathode structural assembly is adsorbed on the part through the cathode magnet.

[0015] Furthermore, a positioning groove cooperating with the cathode magnet is provided on the cathode connector, and a connection port for connecting the negative pole of the DC power supply is formed at the bottom of the positioning groove. The cathode magnet is magnetically assembled in the positioning groove to clamp and fix the negative pole of the DC power supply to the connection port.

[0016] The beneficial effects of this utility model include: the portable electrolytic polishing device utilizes a pen-shaped electrolytic polishing head and a built-in electrolyte storage tank for continuous electrolyte supply. Its compact size makes it easy to move and operate, making it suitable for grinding and polishing the surfaces of large equipment components and complex structures. It can be used for pre-treatment of components prior to X-ray diffraction testing for residual stress, and can also be used in other situations requiring electrolytic polishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of anode structural components;

[0018] Figure 2 for Figure 1 It is the AA cross-sectional view of the anode structural assembly structure;

[0019] Figure 3 This is a schematic diagram of the opening on the upper end cover of the liquid storage tube;

[0020] Figure 4 Schematic diagram of cathode structural components;

[0021] Figure 5 Schematic diagram of a flow regulating orifice plate with a handle according to Example 2;

[0022] Figure 6 This is a schematic diagram of the assembly of the flow regulating orifice plate with a handle and the connecting ring in Example 2;

[0023] In the figure: 1—brush head, 2—connecting ring, 2.1—adjusting groove, 3—liquid storage tube, 3.1—upper end cover of liquid storage tube, 3.2—fixing through hole, 4—flow regulating orifice plate, 4.1—adjusting through hole, 4.2—handle, 5—copper electrode, 6—rubber sealing ring, 7—nut, 8—cathode magnet, 9—cathode connector, 10—electrode sleeve, 11—connection port. DETAILED DESCRIPTION

[0024] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Example 1

[0026] See attached Figure 1-4, an electrolytic polishing device for local treatment of part surfaces, comprising an anode structural component and a cathode structural component; the anode structural component comprises a liquid storage tube 3 and a brush head 1 arranged at one end of the liquid storage tube, the hollow cavity of the liquid storage tube 3 is filled with electrolyte, the brush head 1 is filled with a flexible water storage material for brushing the surface of the part, the liquid storage tube 3 and the brush head 1 are connected, so that the electrolyte in the liquid storage tube 3 enters the brush head 1 and is absorbed by the flexible water storage material, a copper electrode 5 is provided through the liquid storage tube 3, the head end of the copper electrode 5 extends into the brush head 1 and is wrapped in the flexible water storage material, the end of the copper electrode 5 passes through the end of the liquid storage tube 3 and is connected to the positive electrode of the DC power supply; the cathode structural component is connected to the negative electrode of the DC power supply.

[0027] Furthermore, the liquid storage tube 3 and the coating brush head 1 are detachably connected via a connecting ring 2 , and the connecting ring 2 is assembled on the outer walls of the liquid storage tube 3 and the coating brush head 4 .

[0028] Furthermore, three fixed through holes 3.2 are provided on the upper end cover 3.1 of the liquid storage tube 3 close to the brush head; a flow regulating orifice plate 4 for controlling the flow of electrolyte is provided between the liquid storage tube 3 and the brush head 1, and three regulating through holes 4.1 corresponding to the diameter and position of the fixed through holes 3.1 are provided on the flow regulating orifice plate 4. The electrolyte flow is controlled by the staggered relationship between the fixed through holes 3.2 and the regulating through holes 4.1, and can be adjusted from a fully open state to a fully closed state.

[0029] Furthermore, the connecting ring 2 passes through the coating head 1 and is threadedly connected to the outer wall of the liquid storage tube 3, and the flow regulating orifice 4 is arranged inside the connecting ring 2. This connection method ensures the stability of the connection between the coating head 1 and the liquid storage tube 3. When adjusting the flow rate, it is necessary to loosen the connecting ring 2 partially, fix it with the central copper electrode, rotate the flow regulating orifice 4, and then tighten the connecting ring 2 after adjusting the flow rate.

[0030] Furthermore, the liquid storage tube 3 is a cylindrical structure, and the coating head 1 includes an integral cylindrical body and a truncated cone. The outer diameter of the cylindrical body is consistent with the outer diameter of the liquid storage tube, and the connecting ring 2 is connected to the outer wall of the cylindrical body and the liquid storage tube. The large end surface of the truncated cone is connected to the cylindrical body to form a closed structure to prevent the flexible water storage material inside from escaping. The coating head 1 is open at both ends, and a through-hole is formed inside the coating head 1. The flexible water storage material is filled in the trough.

[0031] Before use, fill the liquid storage tube 3 with electrolyte through the fixed through hole 3.2 of the upper end cover, then install the flow regulating orifice plate 4 and the brush head 1 in sequence, and then fill it with cotton wool or other soft water storage materials, using the cotton wool as the brush head.

[0032] Furthermore, an electrode hole for the copper electrode 5 to pass through is set at the end of the liquid storage tube 3 away from the brush head 1, and a rubber sealing ring 6 is sleeved on the copper electrode 5 to seal the electrode hole on the outer end face of the liquid storage tube 3. The end of the copper electrode 5 is threadedly connected with a nut 7. Tighten the nut 7 to fix the positive pole of the DC power supply between the rubber sealing ring 6 and the nut 7.

[0033] Furthermore, an electrode sleeve 10 is provided in the liquid storage tube 3 , and both ends of the electrode sleeve 10 are integrally connected to the inner end surfaces of both ends of the liquid storage tube 3 . The copper electrode 5 in the liquid storage tube 3 is sealed in the electrode sleeve 10 to avoid corrosion of the copper electrode 5 .

[0034] Furthermore, the flexible water storage material used in this embodiment is absorbent cotton. Other flexible water-absorbing materials, such as sponges, can also be used.

[0035] Furthermore, the cathode structural assembly includes a cathode magnet 8 and a cathode connector 9, which are magnetically connected and clamp the negative pole of the DC power supply. The cathode structural assembly is adsorbed on the part through the cathode magnet 8, and the cathode structural assembly and the anode structural assembly are connected by a wire.

[0036] Furthermore, a positioning groove is provided on the cathode connector 9 to cooperate with the cathode magnet 8, and a wiring port 11 for connecting the negative pole of the DC power supply is formed at the bottom of the positioning groove. The cathode magnet 8 is magnetically assembled in the positioning groove to clamp the negative pole of the DC power supply to the wiring port 11.

[0037] Before using the electropolishing device, fill the electrolyte into the liquid reservoir 3 and stuff the absorbent cotton into the brush head 1. Connect the positive pole of the DC power supply to the end of the copper electrode 5, between the rubber seal 6 and the nut 7, and tighten the nut 7. Connect the negative pole of the DC power supply to the cathode magnet 8 through the cathode connector 9.

[0038] When in use, the DC power supply is turned on to perform electrolytic corrosion on the surface of the part. During use, the position of the flow regulating orifice plate 4 can be adjusted to control the flow of the electrolyte, thereby controlling the intensity of the electrolytic corrosion.

[0039] The electrolytic polishing device of the utility model has the following advantages:

[0040] 1. Pen-shaped electrolytic polishing head with built-in electrolyte storage tank, which can continuously provide electrolyte;

[0041] 2. A flow regulating orifice plate is designed to freely adjust the electrolyte flow;

[0042] 3. Independently sealed electrode casing reduces electrolyte corrosion to the electrode and increases electrode service life;

[0043] 4. The magnetic negative electrode automatically absorbs ferromagnetic materials, reducing the influence of part shape on the negative electrode fixture and improving work efficiency.

[0044] This device can be used for pretreatment of parts before X-ray diffraction testing of residual stress, and can also be used in other situations where electrolytic polishing is required.

[0045] Example 2

[0046] The technical solution of Example 2 is basically the same as that of Example 1, except that: a handle 4.2 for rotating the flow regulating orifice 4 is provided on the outer circumference of the flow regulating orifice 4, the connecting ring 2 is plug-connected or threadedly connected to the outer wall of the brush head 1 and the liquid storage tube 3, and an adjusting groove 2.1 for the handle to move is formed on the side wall of the connecting ring 2, see the attached Figure 5-6 This connection method facilitates the rotation of the flow regulating orifice plate 4 to adjust the flow rate. It should be noted that if the connecting ring adopts a threaded connection method, a shorter thread should be used to make the rotation angle of the connecting ring smaller than the rotation angle of the flow regulating orifice plate handle 4.2 in the connecting ring adjustment groove 2.1.

[0047] It should be noted that the parts not described in detail in the present invention are prior art.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0050] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0051] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0052] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0053] The above examples are merely preferred embodiments of the present invention. Obviously, the present invention is not limited to the above examples and is subject to numerous variations. Any variations that can be directly derived or conceived by a person skilled in the art from the disclosure of the present invention should be considered within the scope of protection of the present invention.

Claims

1. An electrolytic polishing device for local surface treatment of parts, characterized by: It includes an anode structure component and a cathode structure component; the anode structure component includes a liquid storage tube and a brush head arranged at one end of the liquid storage tube, the hollow cavity of the liquid storage tube is filled with electrolyte, and the brush head is filled with a flexible water storage material for brushing the surface of parts, the liquid storage tube and the brush head are connected, so that the electrolyte in the liquid storage tube enters the brush head and is absorbed by the flexible water storage material, a copper electrode is provided through the liquid storage tube, the head end of the copper electrode extends into the brush head and is wrapped in the flexible water storage material, and the end of the copper electrode passes through the end of the liquid storage tube and is connected to the positive electrode of the DC power supply; the cathode structure component is connected to the negative electrode of the DC power supply.

2. The electrolytic polishing device for local surface treatment of a part according to claim 1, characterized in that: The liquid storage tube and the coating brush head are detachably connected via a connecting ring, which is assembled on the outer walls of the liquid storage tube and the coating brush head.

3. The electrolytic polishing device for local surface treatment of a part according to claim 2, characterized in that: A plurality of fixed through holes are provided on the upper end cover of the liquid storage tube near one end of the brush head; a flow regulating orifice plate for controlling the flow of the electrolyte is provided between the liquid storage tube and the brush head, and a plurality of regulating through holes corresponding to the fixed through holes are provided on the flow regulating orifice plate, and the flow of the electrolyte is controlled by the staggered relationship between the fixed through holes and the regulating through holes.

4. The electrolytic polishing device for local surface treatment of a part according to claim 3, characterized in that: A handle for rotating the flow regulating orifice plate is provided on the outer peripheral surface of the flow regulating orifice plate, and the connecting ring is plug-in connected or threadedly connected to the outer wall of the brush head and the liquid storage tube, and an adjustment groove for the handle to move is formed on the side wall of the connecting ring.

5. The electrolytic polishing device for local surface treatment of a part according to claim 3, characterized in that: The connecting ring is threadedly connected to the outer wall of the brush head and the liquid storage tube, and the flow regulating orifice plate is arranged inside the connecting ring.

6. The electrolytic polishing device for local surface treatment of a part according to claim 1, characterized in that: The liquid storage tube is a cylindrical structure, and the brush head includes an integral cylindrical body and a frustum. The outer diameter of the cylindrical body is consistent with the outer diameter of the liquid storage tube, the large end face of the frustum is connected to the cylindrical body, and the small end face of the frustum forms a closed structure. The two ends of the brush head are open, and a through accommodating groove is formed inside the brush head. The flexible water storage material is filled in the accommodating groove; the flexible water storage material is absorbent cotton.

7. The electrolytic polishing device for local surface treatment of a part according to claim 1, characterized in that: An electrode hole for the copper electrode to pass through is set at one end of the liquid storage tube away from the brush head. A rubber sealing ring is sleeved on the copper electrode to seal the electrode hole on the outer end face of the liquid storage tube. The end of the copper electrode is threadedly connected to a nut. The nut is tightened to fix the positive pole of the DC power supply between the rubber sealing ring and the nut.

8. The electrolytic polishing device for local surface treatment of a part according to claim 1, characterized in that: An electrode sleeve is provided in the liquid storage tube, and both ends of the electrode sleeve are connected to the inner end surfaces of both ends of the liquid storage tube as a whole. The copper electrode in the liquid storage tube is sealed in the electrode sleeve.

9. An electrolytic polishing device for local treatment of a part surface according to any one of claims 1 to 8, characterized in that: The cathode structural component includes a cathode magnet and a cathode connector. The cathode magnet and the cathode connector are magnetically connected and clamp the negative pole of the DC power supply. The cathode structural component is adsorbed on the part through the cathode magnet.

10. The electrolytic polishing device for local surface treatment of a part according to claim 9, characterized in that: The cathode connector is provided with a positioning groove that cooperates with the cathode magnet, and a wiring port for connecting the negative pole of the DC power supply is formed at the bottom of the positioning groove. The cathode magnet is magnetically assembled in the positioning groove to clamp and fix the negative pole of the DC power supply to the wiring port.

Images