A milling jig for blue corrosion inspection

Abstract

The application discloses a kind of blue corrosion inspection milling clamps, including clamp body and hook, the clamp body includes connecting rod and connecting frame, the connecting rod one end is connected with connecting frame, the hook is connected with connecting frame.The clamp of the application cooperates with the hook clamping arm of different lengths, can adapt to the clamping of multiple size parts, so that it has better clamping stability under the condition of increasing the number of lower slots.At the same time, the clamp is coated with corrosion-resistant treatment without affecting the current passing, increasing its durability, also ensuring its current stability, so that the oxide film generated on the surface of the part is uniform and the color is consistent, which is convenient for realizing the macroscopic appearance and determination of defects after subsequent development.

Description

Technical Field

[0001] This invention belongs to the field of mechanical manufacturing technology, and in particular relates to a milling fixture for blue corrosion inspection. Background Technology

[0002] During the blue etching process, the parts need to undergo anodizing, which requires an electric current to cause the parts to undergo an anodizing reaction in the bath. The fixture, as the only bridge connecting the parts and the power source, will fail to establish an effective electric field if its conductivity is poor. This will prevent the electrochemical reaction from starting or proceeding, causing most of the electrical energy to be converted into heat energy. This will lead to overheating and damage to the fixture, wasting electrical energy. Poor contact between the fixture and the parts can also cause excessive current overload, resulting in arcing and burning of the parts.

[0003] Therefore, the blue etched parts fixture must have good conductivity to ensure uniform current distribution and maintain a stable current density during the reaction process. Furthermore, the blue etched parts fixture needs to stably hold the parts to complete the pretreatment steps (pre-etching, activation) and subsequent development steps. An improperly designed fixture can cause burns to the parts during processing, rendering them unusable. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a milling fixture for blue corrosion inspection.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides a milling fixture for blue corrosion inspection, comprising a fixture body and a hook. The fixture body includes a connecting rod and a connecting frame. One end of the connecting rod is connected to the connecting frame, and the hook is connected to the connecting frame.

[0007] Preferably, the hook includes a clamping arm, and the clamping arm is provided with teeth at both ends.

[0008] Preferably, the teeth are flat or cylindrical.

[0009] Preferably, the number of teeth provided at both ends of the clamping arm is not equal.

[0010] Preferably, the teeth are provided with grooves.

[0011] Preferably, the groove is located inside the tooth.

[0012] Preferably, the clamping arm is U-shaped.

[0013] Preferably, two connecting rods are arranged in parallel on the connecting frame, and a reinforcing rib is provided between the two connecting rods.

[0014] Preferably, the connecting frame includes a first connecting rod and a second connecting rod, with a plurality of second connecting rods disposed between the two first connecting rods, and hooks disposed on the top and bottom surfaces of the second connecting rods.

[0015] Preferably, the clamp body and hook are made of TC4 alloy.

[0016] The beneficial effects of this invention are as follows: The clamp of this invention, combined with hook clamping arms of different lengths, can accommodate parts of various sizes, maintaining good clamping stability even when the number of slots is increased. Simultaneously, the clamp is coated with rubber for corrosion protection without affecting current flow, increasing its durability. Furthermore, the rubber-coated area of ​​the clamp does not participate in the anodizing reaction, ensuring current stability during the electrochemical reaction process on the part surface. The resulting oxide film is uniform and consistent in color, facilitating the macroscopic visualization and assessment of defects after subsequent development. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a front view of the main body of the fixture of the present invention; Figure 3 This is a schematic diagram of the hook structure of the present invention; In the diagram: 1-Clamp body, 2-Hook, 21-Clamping arm, 22-Clamping tooth, 23-Groove, 3-Connecting rod, 4-Connecting frame, 41-First connecting rod, 42-Second connecting rod, 5-Reinforcing rib. Detailed Implementation

[0018] The technical solution of the present invention is further described below, but the scope of protection is not limited to what is described.

[0019] Example 1: like Figures 1 to 3 As shown, a milling fixture for blue corrosion inspection includes a fixture body 1 and hooks 2. The fixture body 1 includes a connecting rod 3 and a connecting frame 4. One end of the connecting rod 3 is welded to the connecting frame 4. The hooks 2 are welded to the connecting frame 4. Several hooks 2 are arranged along the length of the connecting frame 4, and the specific number is determined according to the process requirements.

[0020] The hook 2 includes a clamping arm 21, with cleats 22 at both ends. In actual use, by using clamping arms 21 of different lengths, it can accommodate the clamping of parts of various sizes, preventing burns to the parts during the blue etching process.

[0021] The clamping teeth 22 are flat to fit the shape of the parts, ensuring stable clamping and convenient processing.

[0022] One end of the clamping arm 21 is provided with a locking tooth 22, and the other end is provided with two locking teeth 22.

[0023] The tooth 22 is provided with a groove 23. After the sheet-like part is stuck in the groove 23, it obtains higher clamping stability.

[0024] The groove 23 is located inside the tooth 22.

[0025] The clamping arm 21 is U-shaped, and its outer middle part is connected to the second connecting rod 42. The U-shaped design of the clamping arm 21 provides it with good elasticity, making it suitable for clamping parts within its elastic range. Furthermore, the connection of multiple clamping arms 21 to the second connecting rod 42 can significantly improve the clamping capacity of the fixture.

[0026] Two connecting rods 3 are arranged parallel to each other on the connecting frame 4, and a reinforcing rib 5 is provided between the two connecting rods 3. Except for the reinforcing rib 5 and the conductive parts for mounting the hook 2 on one side of the connecting frame 4, the main body 1 of the clamp needs to be coated with rubber for corrosion protection.

[0027] The connecting frame 4 includes a first connecting rod 41 and a second connecting rod 42. Several second connecting rods 42 are arranged between the two first connecting rods 41. The first connecting rods 41 and the second connecting rods 42 are arranged vertically. Hooks 2 are arranged on the top and bottom surfaces of the second connecting rods 42.

[0028] Except for the connection between the clamping arm 21 and the main body 1, and the tip of the clamping tooth 22 that contacts the part, the remaining parts of the hook 2 need to be coated with rubber for corrosion protection to prevent the clamping tooth 22 from being corroded in the bath solution and to ensure its durability. The clamping tooth 22 can be formed in one step by wire cutting, which has better clamping tightness and stability.

[0029] The clamp body 1 and hook 2 are made of TC4 alloy to ensure good electrical conductivity of the clamp.

[0030] Example 2: A milling fixture for inspecting blue corrosion, based on Embodiment 1, except that the cleat teeth 22 are cylindrical.

[0031] A method for using a milling fixture for blue corrosion inspection includes the following steps: opening the U-shaped clamping arm 21, clamping a part within the elastic range of the clamping arm 21 onto the fixture, fixing the lower edge of the part in two adjacent grooves 23 on the lower side, and fixing the upper edge of the part in the upper groove 22, forming a stable triangular clamping structure to fully ensure the stability of the part clamping.

[0032] After clamping, the fixture is mounted on the anode hanger of the blue etching processing tank, ensuring good contact between the fixture and the conductive parts of the anode hanger. Then, the pre-etching, activation, anodizing, and development processes can be carried out sequentially according to the blue etching inspection process. During the processing, the rubber-coated area does not participate in the electrochemical reaction. The current is only conducted to the part through the tip of the 22 cleat teeth, ensuring a uniform and stable current distribution in the part area. This results in a uniform oxide film thickness on the part surface and consistent blue color development, avoiding abnormal color development caused by uneven current, which would affect subsequent defect identification and judgment. At the same time, it reduces the area of ​​the fixture itself participating in the reaction, reduces the corrosion wear of the fixture by the tank solution, and extends the service life of the fixture.

Claims

1. A milling fixture for inspecting blue corrosion, characterized in that: It includes a clamp body (1) and a hook (2). The clamp body (1) includes a connecting rod (3) and a connecting frame (4). One end of the connecting rod (3) is connected to the connecting frame (4), and the hook (2) is connected to the connecting frame (4).

2. The milling fixture for blue corrosion inspection as described in claim 1, characterized in that: The hook (2) includes a clamping arm (21), and the clamping arm (21) is provided with teeth (22) at both ends.

3. The milling fixture for blue corrosion inspection as described in claim 2, characterized in that: The teeth (22) are flat or cylindrical.

4. A milling fixture for inspecting blue corrosion as described in claim 2, characterized in that: The number of cleats (22) provided at both ends of the clamping arm (21) is not equal.

5. A milling fixture for inspecting blue corrosion as described in claim 2, characterized in that: The tooth (22) is provided with a groove (23).

6. A milling fixture for inspecting blue corrosion as described in claim 5, characterized in that: The groove (23) is located inside the tooth (22).

7. A milling fixture for inspecting blue corrosion as described in claim 2, characterized in that: The clamping arm (21) is U-shaped.

8. A milling fixture for inspecting blue corrosion as described in claim 1, characterized in that: Two connecting rods (3) are arranged in parallel on the connecting frame (4), and a reinforcing rib (5) is provided between the two connecting rods (3). One end of the connecting rod (3) is U-shaped.

9. A milling fixture for inspecting blue corrosion as described in claim 1, characterized in that: The connecting frame (4) includes a first connecting rod (41) and a second connecting rod (42). Several second connecting rods (42) are arranged between the two first connecting rods (41). Hooks (2) are arranged on the top and bottom surfaces of the second connecting rods (42).

10. A milling fixture for inspecting blue corrosion as described in claim 1, characterized in that: The clamp body (1) and hook (2) are made of TC4 alloy.

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