A fixture for electrochemically etching a part

Abstract

A kind of fixture for part electrochemical etching, including bottom, cathode seat, cathode plate and top cover arranged in turn from bottom to top;The bottom is discoid in plan view, and the top surface of the bottom is provided with a receiving groove;The cathode seat is annular structure;The cathode plate is annular plate structure;When clamping, the lower end of the cathode seat abuts on the upper end of the bottom;The top cover compresses the cathode plate tightly on the top end of the cathode seat;A vertical stud is provided in the center of the bottom, and the upper end of the stud extends from the center hole of the top cover and is screwed with a nut.Because the cathode seat is provided, the distance between the position of the cathode plate and the part to be etched is always kept unchanged, and the size difference of each oil storage groove machined on the part is not large.

Description

Technical Field

[0001] This invention relates to the field of electrochemical etching technology, and more particularly to a fixture for electrochemical etching of parts. Background Technology

[0002] The locking nut of the part has a circular ring structure. One step in the part's machining process requires electrochemically machining 36 oil reservoirs on the flat surface of the part's upper surface. Existing fixtures cannot achieve a suitable distance between the cathode plate and the part, thus ensuring that the oil reservoirs on the part have minimal dimensional differences. Summary of the Invention

[0003] The main objective of this invention is to provide a fixture for electrochemical etching of parts, which maintains a constant distance between the cathode and the part during the electrochemical etching process, thereby addressing the aforementioned technical problems.

[0004] To achieve the above objectives, this invention proposes a fixture for electrochemical etching of parts, comprising a base, a cathode holder, a cathode plate, and a top cover arranged sequentially from bottom to top; the base is disc-shaped when viewed from above, and a receiving groove is provided on the top surface of the base; the cathode holder has an annular structure; the cathode plate has an annular plate structure; during clamping, the lower end of the cathode holder abuts against the upper end of the base; the top cover presses the cathode plate tightly against the top of the cathode holder; a vertical stud is provided at the center of the base, and the upper end of the stud extends from the central hole of the top cover and is screwed with a nut.

[0005] Preferably, an annular boss is provided on the lower end face edge of the top cover; the inner circumferential diameter of the annular boss matches the outer circumferential diameter of the cathode plate, and the cathode plate is installed inside the annular boss during clamping.

[0006] Preferably, an ear plate for connecting to a power source is integrally formed on the cathode plate, and a connection hole is provided on the ear plate; a first notch is provided on the annular protrusion; during clamping, the ear plate is engaged in the first notch.

[0007] Preferably, an annular groove is provided on the inner wall at the lower end of the cathode seat.

[0008] Preferably, a plurality of support bosses are provided at intervals at the top of the cathode seat to support the cathode plate, and a liquid inlet groove is formed between two adjacent support bosses.

[0009] Preferably, two second notches are provided on the side wall of the receiving groove of the base, and the two second notches are symmetrically arranged at 180 degrees.

[0010] Preferably, the stud, base, cathode seat, top cover, and nut are all made of nylon.

[0011] Preferably, a hanging hole is provided laterally at the top of the stud.

[0012] Preferably, a plurality of first liquid inlet holes are distributed on the top cover.

[0013] Preferably, a plurality of second liquid inlet holes are distributed on the base.

[0014] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0015] (1) By using the fixture provided by this invention, when clamping the stop nut part to be etched, the stop nut is placed in the receiving groove of the base, then the cathode seat is fastened to the top surface of the base, then the cathode plate is placed on top of the cathode seat, then the top cover is fastened to the cathode plate, and the nut is tightened on the stud to press the top cover down, thus completing the clamping. Because of the cathode seat, the distance between the position of the cathode plate and the part to be etched remains constant, and the size difference of each oil reservoir that can be machined on the part is not large.

[0016] (2) In this invention, since a receiving groove is provided on the top surface of the base and an annular slot is provided on the inner wall of the lower end of the cathode seat, when the part to be etched is clamped, the lower part of the part is placed in the receiving groove of the base and the upper part can be clamped in the annular slot of the cathode seat, thereby fixing the part, restricting the axial movement of the part, and ensuring the stability of the part clamping.

[0017] (3) In this invention, since an annular boss is provided on the lower end face edge of the top cover, the cathode plate is installed inside the annular boss during clamping, and the lower end face of the cathode plate is pressed against the cathode seat. Therefore, after clamping, the cathode plate is limited in both the axial and radial directions. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 A cross-sectional view of the clamp provided by the present invention;

[0020] Figure 2 A three-dimensional structural diagram of the clamp provided by the present invention;

[0021] Figure 3 This is a schematic diagram of the base in the fixture provided by the present invention;

[0022] Figure 4This is a schematic diagram of the cathode plate in the fixture provided by the present invention;

[0023] Figure 5 This is a schematic diagram of the top cover in the fixture provided by the present invention;

[0024] Figure 6 This is a schematic diagram showing the clamping of the fixture provided by the present invention with the part to be etched.

[0025] Explanation of reference numerals in the attached diagram: 1. Stud; 1a. Hanging hole; 2. Base; 2a. Receiving groove; 2b. Second notch; 2c. Second liquid inlet; 3. Cathode seat; 3a. Annular groove; 4. Cathode plate; 4a. Ear plate; 4b. Connecting hole; 5. Top cover; 5a. Annular boss; 5b. First notch; 5c. First liquid inlet; 6. Nut; 100. Locking nut. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0028] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0029] Combination Figure 6 The diagram shows the clamping of the fixture provided by the present invention with the part to be etched. The part to be etched is a stop nut 100, which is a ring structure. In the processing of this part, there is a process that requires electrochemical processing to create 36 oil reservoirs on the upper surface of the stop nut 100.

[0030] Combination Figures 1 to 5 The image shows a specific embodiment of a fixture for electrochemical etching of parts provided by the present invention. The fixture includes a base 2, a cathode seat 3, a cathode plate 4, and a top cover 5 arranged sequentially from bottom to top. The base 2 is disc-shaped when viewed from above, and a receiving groove 2a is provided on the top surface of the base 2. The cathode seat 3 has an annular structure. The cathode plate 4 has an annular plate structure. When clamped, the lower end of the cathode seat 3 abuts against the upper end of the base 2. The top cover 5 presses the cathode plate 4 tightly against the top of the cathode seat 3. A vertical stud 1 is provided at the center of the base 2, and the upper end of the stud 1 extends out from the center hole of the top cover 5 and is screwed with a nut 6.

[0031] Combination Figure 6 As shown, by adopting the above structure, when the stop nut 100 is clamped, the stop nut 100 is placed in the receiving groove 2a of the base 2. Since the cathode seat 3 is provided, the vertical distance between the position of the cathode plate 4 and the stop nut 100 remains unchanged. During chemical etching, the size difference of each oil storage tank that can be processed on the stop nut 100 is not large.

[0032] Combination Figure 1 and Figure 5 As shown, an annular boss 5a is provided on the lower edge of the top cover 5; the inner diameter of the annular boss 5a matches the outer diameter of the cathode plate 4. During clamping, the cathode plate 4 is installed inside the annular boss 5a. During clamping, the cathode plate 4 is installed inside the annular boss 5a, and the lower end face of the cathode plate 4 is pressed against the cathode seat 3. Therefore, after clamping, the cathode plate 4 is limited in both the axial and radial directions.

[0033] Combination Figures 4 to 6 As shown, in order to facilitate the connection between the cathode plate 4 and the power supply line, an ear plate 4a for connecting the power supply is integrally formed on the cathode plate 4, and a connection hole 4b is provided on the ear plate 4a for connecting the power supply line; in order to avoid interference between the ear plate 4a and the annular boss 5a, a first notch 5b is provided on the annular boss 5a; during clamping, the ear plate 4a is engaged in the first notch 5b; the first notch 5b not only avoids interference, but also limits the ear plate 4a, preventing the cathode plate 4 from rotating around the axis of the entire fixture.

[0034] Combination Figure 1 , Figure 2 As shown, an annular groove 3a is provided on the inner wall of the lower end of the cathode seat 3. When clamping the stop nut 100 to be etched, the lower part of the stop nut 100 is placed in the receiving groove 2a of the base 2, and the upper part is clamped in the annular groove 3a of the cathode seat 3, thereby fixing the stop nut 100, restricting the axial movement of the stop nut 100, and ensuring the stability of the clamping.

[0035] Combination Figure 1 , Figure 2 As shown, multiple support bosses 3b are spaced apart at the top of the cathode holder 3 to support the cathode plate 4, and a liquid inlet groove is formed between two adjacent support bosses 3b. Since the entire fixture, including the stop nut 100, needs to be immersed in the etching liquid during electrochemical etching, the liquid inlet groove formed between two adjacent support bosses 3b allows the etching liquid to quickly enter the fixture. The overall height design of the support bosses 3b and the cathode holder 3 ensures the spacing between the cathode plate 4 and the component.

[0036] Combination Figure 3 As shown, two second notches 2b are provided on the side wall of the receiving groove 2a of the base 2, and the two second notches 2b are symmetrically arranged at 180 degrees. The purpose of providing the second notches 2b is to facilitate the removal of the stop nut 100 after etching. That is, the operator can use his / her fingers to grasp the stop nut 100 from the two symmetrically arranged second notches 2b and remove it, or use a flathead screwdriver to pry the stop nut 100 out from the second notches 2b.

[0037] In this embodiment, the stud 1, base 2, cathode seat 3, top cover 5, and nut 6 are all made of nylon. Nylon material has insulation and corrosion resistance, preventing corrosion and improving the service life of the fixture.

[0038] Combination Figure 1 , Figure 2 As shown, a hanging hole 1a is provided laterally at the top of the stud 1. Since the entire fixture and the stop nut 100 need to be immersed in the etching liquid during electrochemical etching, the hanging hole 1a facilitates lifting.

[0039] Combining 3 and Figure 5 As shown, in order to allow the etching liquid to quickly enter the fixture, multiple first liquid inlet holes 5c are distributed on the top cover 5. Similarly, multiple second liquid inlet holes 2c are also distributed on the base 2.

[0040] Combination Figure 6 As shown, the steps for clamping the stop nut 100 using the above-mentioned clamp are as follows:

[0041] S1. Place the pre-processed stop nut 100 into the receiving groove 2a of the base 2;

[0042] S2. Attach the cathode holder to the top surface of the base 2, and make the upper part of the stop nut 100 fit into the annular groove 3a of the cathode holder 3; thus fixing the stop nut 100.

[0043] S3. Place the cathode plate 4 on top of the cathode seat 3, and then fasten the top cover 5 onto the cathode plate 4 so that the cathode plate 4 is inserted into the interior of the annular boss 5a, and the ear plate 4a of the cathode plate 4 is engaged in the first notch 5b.

[0044] S4. Tighten the nut 6 onto the stud 1 and press the top cover 5 down to complete the clamping.

[0045] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A fixture for electrochemical etching of parts, wherein the parts to be etched are stop nuts (100), the stop nuts (100) having a circular ring structure, and 36 oil reservoirs are to be electrochemically machined on the upper surface of the stop nuts (100); characterized in that: The device includes a base (2), a cathode seat (3), a cathode plate (4), and a top cover (5) arranged sequentially from bottom to top. The base (2) is disc-shaped when viewed from above, and a receiving groove (2a) is provided on the top surface of the base (2). The cathode seat (3) has an annular structure. The cathode plate (4) has an annular plate structure. When clamped, the lower end of the cathode seat (3) abuts against the upper end of the base (2). The top cover (5) presses the cathode plate (4) tightly against the top of the cathode seat (3). A vertical stud (1) is provided in the center of the base (2), and the upper end of the stud (1) extends out from the center hole of the top cover (5) and is screwed with a nut (6). An annular boss (5a) is provided on the lower end face edge of the top cover (5); the inner circumferential diameter of the annular boss (5a) matches the outer circumferential diameter of the cathode plate (4), and the cathode plate (4) is installed inside the annular boss (5a) during clamping. An ear plate (4a) for connecting to a power source is integrally formed on the cathode plate (4), and a connection hole (4b) is provided on the ear plate (4a); a first notch (5b) is provided on the annular boss (5a); when clamped, the ear plate (4a) is engaged in the first notch (5b); An annular groove (3a) is provided on the inner wall at the lower end of the cathode seat (3); Multiple support bosses (3b) are provided at intervals at the top of the cathode seat (3) to support the cathode plate (4), and a liquid inlet groove is formed between two adjacent support bosses (3b). Two second notches (2b) are provided on the side wall of the receiving groove (2a) of the base (2), and the two second notches (2b) are arranged symmetrically at 180 degrees.

2. The clamp as described in claim 1, characterized in that: The stud (1), base (2), cathode seat (3), top cover (5) and nut (6) are all made of nylon.

3. The clamp as described in claim 1, characterized in that: A hanging hole (1a) is provided laterally at the top of the stud (1).

4. The clamp as described in claim 1, characterized in that: Multiple first liquid inlet holes (5c) are distributed on the top cover (5).

5. The clamp as described in claim 1, characterized in that: Multiple second liquid inlet holes (2c) are distributed on the base (2).

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