Universal anodic oxidation tooling

Abstract

The utility model discloses a general anodic oxidation tool, including the hook, crosspiece, U type titanium sheet, a plurality of pairs of crosspieces are fixed in parallel on the hook, and the distance between crosspieces can be adjusted through the long hole one on the hook, a plurality of U type titanium sheets are equipped on each crosspiece, and the U type titanium sheet can slide and adjust laterally relative to the crosspiece, and is fixed through the bolt after distance determination, the utility model can satisfy the sulfuric acid anodic oxidation of various aluminum and aluminum alloy parts with deep blind thread hole, light hole, cavity, flaky, circular, oval, massive, solve the gas caused by side reaction, cause the air, and cause the film layer to be discontinuous, not complete, or under the air stirring, the quality defect such as burning caused by the insecure contact of the part and the fixture.

Description

Technical Field

[0001] This utility model belongs to the field of surface treatment technology, specifically relating to a general-purpose anodizing fixture, which is particularly suitable for anodizing large sheet-shaped and ring-shaped aluminum alloy workpieces. Background Technology

[0002] In the machinery manufacturing industry, a large number of parts with annular curved surfaces and numerous deep, blind threaded holes require sulfuric acid anodizing surface treatment. In practice, due to the varying diameters and weight of these parts, improper clamping can easily lead to quality problems. Before anodizing, the parts need to be clamped, typically using aluminum wire and aluminum clamps. High surface quality is required for the parts, and the quality of the film layer at the deep, blind threaded holes must be guaranteed, with no defects such as scorching or discontinuous film layers allowed. Current methods use aluminum clamps, with the clamping jaws contacting any two points along the inner diameter of the part. To ensure a continuous and intact film layer inside the deep, blind threaded holes, air agitation is required during the sulfuric acid anodizing process.

[0003] The shortcomings of existing anodizing racks include:

[0004] 1. The clamping direction is in the inner diameter direction of the part, and the inner diameter is arc-shaped in the thickness direction. The machining accuracy is high and the surface is smooth, but clamping marks are produced, which affect the appearance of the product after anodizing.

[0005] 2. The clamping is not secure; when the air agitator is turned on, electric sparks are easily generated, which can cause the film layer of the parts to burn and affect the appearance quality.

[0006] 3. The fixture is prone to corrosion, resulting in poor electrical conductivity. Utility Model Content

[0007] This invention provides a universal anodizing fixture for clamping ring-shaped parts of different outer diameters and sheet metal parts of different shapes, ensuring that the parts are free from scratches and bumps during clamping, and that the clamping is firm and reliable. It is also suitable for hard anodizing.

[0008] To solve the above technical problems, this utility model provides a universal anodizing fixture, characterized in that it includes a hook, a crossbar, and U-shaped titanium plates. Multiple crossbars are fixed parallel to each other on the hook, the distance between the crossbars is adjustable, and multiple U-shaped titanium plates are mounted on each crossbar. The U-shaped titanium plates can slide laterally relative to the crossbars for adjustment.

[0009] Furthermore, U-shaped titanium sheets are used to fix the workpiece.

[0010] Furthermore, the top of the hook is connected to the anode rod.

[0011] Furthermore, the hook includes a main rod and a secondary hook, with the secondary hook fixed to the top of the main rod and an elongated hole provided on the main rod along its length.

[0012] Furthermore, the secondary hook is welded to the top of the main rod at a 30° angle.

[0013] Furthermore, the length of the elongated hole is 1050-1100 mm.

[0014] Furthermore, the length of the crossbar is 450-460 mm.

[0015] Furthermore, the middle part of the upper part of the crossbar is connected to the hook, and the distance between the crossbars is adjusted through the elongated hole.

[0016] Furthermore, the crossbar is provided with an elongated hole for connecting with a U-shaped titanium sheet.

[0017] Furthermore, a round hole is opened on the front and rear sides of the U-shaped titanium sheet, and a push rod is fixed at a position below the rear round hole, so that the push rod makes point contact with the outer surface of the workpiece.

[0018] Beneficial effects: This utility model can meet the requirements of sulfuric acid anodizing (hard anodizing) of various aluminum and aluminum alloy parts with deep blind thread holes, open holes, cavities, and sheet-like, ring-shaped, elliptical, and block-shaped parts. It solves the quality defects such as discontinuous and incomplete film layer caused by gas generated by side reactions, gas entrapment, or scorching caused by poor contact between parts and fixtures under air stirring. Attached Figure Description

[0019] Figure 1 Assembly drawing

[0020] Figure 2 Crossbar structure diagram

[0021] Figure 3 Installation diagram of crossbar and main bar

[0022] Figure 4 Installation diagram of crossbar and main bar

[0023] Figure 5 U-shaped titanium sheet structure diagram. Detailed Implementation

[0024] To make the purpose, content and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below.

[0025] This utility model proposes a universal anodizing fixture, including a hook 1, a crossbar 2, and U-shaped titanium plates 3. Multiple pairs of crossbars are fixed in parallel on the hook 1. The distance between the crossbars can be adjusted through the elongated hole on the hook 1. Each crossbar 2 is equipped with multiple U-shaped titanium plates 3. The U-shaped titanium plates 3 can slide laterally relative to the crossbar 2 for adjustment. After the distance is determined, they are fixed by bolts.

[0026] Multiple U-shaped titanium plates 3 are connected to the outer surface of the aluminum alloy workpiece via push rods 14, bolts 4 and nuts 5.

[0027] The hook 1 is connected to the anode rod at its top. The hook includes a main rod, a secondary hook 9, and an elongated hole 10. The secondary hook 9 is welded to the top of the main rod at a 30° angle. The elongated hole 10 is 1050-1100 mm long and is set on the main rod along its length. The hole is opened at a distance of 420-430 mm from the top of the main rod to ensure that the clamping parts can be adjusted according to their external dimensions.

[0028] Please see Figure 2 The crossbar 2 is 450-460 mm long, and has a light hole 12 at the top center. The diameter of the light hole 12 is 10-12 mm. Bolt 2 6 and nut 7 are used at the center of the crossbar 2 (see...). Figure 4 It is connected to the main rod of hook 1. The distance between a set of crossbars 2 can be adjusted through the elongated hole 10 to clamp parts of different shapes and sizes.

[0029] The crossbar 2 is provided with an elongated hole 11, which is opened 10-12 mm from the left end and 12-14 mm from the top end of the crossbar 2. The length of the elongated hole is 430-440 mm.

[0030] Please see Figure 3 The U-shaped titanium sheet 3 is connected to the crossbar 2 through the elongated hole 11 using bolt 4 and nut 5.

[0031] The U-shaped titanium sheet 3 has an inner diameter width of 35-40mm. A round hole 13, 9-10mm in diameter, is opened on both the front and rear sides. A top rod 14 is welded to the rear side 25-30mm below the rear round hole 13 (see...). Figure 5 The push rod 14 and bolt 4 make point contact with the outer surface of the aluminum alloy part 8 (see...). Figure 3 To ensure that the aluminum alloy parts 8 are clamped securely and reliably, the number of U-shaped titanium plates 3 can be increased during clamping.

[0032] Please see Figure 1 When clamping the part, one end of bolt 4 is connected to the round hole 13 of the U-shaped titanium plate 3 via a thread, and the other end is locked to the crossbar 2 with nut 5. At the same time, the threaded end of the bolt rests on the upper end face of the aluminum alloy part 8. The thread depth of bolt 4 is adjusted according to the thickness of the sheet-like or ring-shaped aluminum alloy part in the clamping direction. The other end of the upper end face of the aluminum alloy part 8 contacts the push rod 14. The clamping method for the lower end face of the aluminum alloy part 8 is the same as that for the upper end face.

[0033] During installation, such as Figure 1The diagram shows a structural schematic of a fixture unit (composed of a crossbar 2 and a U-shaped titanium sheet 3) fixed to the fixture body. Such fixture units can be one or more sets. Experiments show that for large workpieces in the ring, sheet, or block shapes, the oxidation fixture of this invention allows for oxidation using low current density and air agitation, significantly improving oxidation efficiency.

[0034] Key points:

[0035] 1. By adjusting the fixed position of the crossbar and the hook main rod, the mounting of ring-shaped parts with different outer diameters and sheet metal with different shapes can be completed.

[0036] 2. The parts are clamped by the top rods, bolts and nuts welded on the U-shaped titanium sheet, ensuring that the parts are free from scratches and bumps during the clamping process, and that the clamping is firm and reliable.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A universal anodizing fixture, characterized in that: It includes hooks, crossbars, and U-shaped titanium plates. Multiple crossbars are fixed parallel to each other on the hooks. The distance between the crossbars is adjustable. Each crossbar is equipped with multiple U-shaped titanium plates, which can slide laterally relative to the crossbars for adjustment.

2. The universal anodizing fixture according to claim 1, characterized in that: U-shaped titanium sheets are used to fix the workpiece.

3. The universal anodizing fixture according to claim 1, characterized in that: The top of the hook is connected to the anode rod.

4. The universal anodizing fixture according to claim 1, characterized in that: The hook includes a main rod and a secondary hook. The secondary hook is fixed to the top of the main rod, and an elongated hole is provided on the main rod along its length.

5. A universal anodizing fixture according to claim 4, characterized in that: The secondary hook is welded to the top of the main rod at a 30° angle.

6. A universal anodizing fixture according to claim 4, characterized in that: The length of the elongated hole is 1050-1100 mm.

7. A universal anodizing fixture according to claim 1, characterized in that: The crossbar is 450-460 mm long.

8. A universal anodizing fixture according to claim 1, characterized in that: The middle part of the top of the crossbar is connected to the hook, and the distance between the crossbars can be adjusted through the elongated hole.

9. A universal anodizing fixture according to claim 1, characterized in that: The crossbar has two elongated holes for connecting to the U-shaped titanium sheet.

10. A universal anodizing fixture according to claim 1, characterized in that: A round hole is made on the front and back sides of the U-shaped titanium sheet. A push rod is fixed at a position below the round hole on the back side, and the push rod makes point contact with the outer surface of the workpiece.

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