Carburizing anti-deformation clamp

Abstract

The carburizing anti-deformation clamp comprises a clamp body, the clamp body is of a cylindrical structure, the shape of the inner circle of the clamp body is matched with the shape of the outer surface of a workpiece, a plurality of clamp grooves are annularly and evenly distributed in the outer circle of the clamp body, side holes are formed in the two sides of each clamp groove, and the clamp grooves communicate with the inner circle of the clamp body through the side holes; the outer circle of the clamp body is fixed through an outer ring. The structure is arranged on the aspects of controlling the deformation direction and facilitating the smoothness of an air duct, high-concentration carbon ions can make full contact with the metal surface of a steel part, continuous carburization is conducted on the tooth surface of a product, and the carburization effect is better.

Description

Technical Field

[0001] This invention relates to the field of carburizing and quenching, and particularly to a carburizing anti-deformation fixture. Background Technology

[0002] In the manufacturing of parts requiring carburizing and quenching, the amount of deformation after carburizing and quenching has a significant impact on the production cost of the product. It not only affects the finishing allowance before carburizing and quenching, the depth of the carburized layer, and the quality of carburizing and quenching, but also extends the production cycle. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides a carburizing anti-deformation fixture with a simple structure and reliable operation.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is: a carburizing anti-deformation fixture, including a fixture body, the fixture body is a cylindrical structure, the inner circle shape of the fixture body matches the outer surface shape of the workpiece, a number of fixture grooves are evenly distributed in a ring on the outer circle of the fixture body, and side holes are opened on both sides of the fixture grooves, and the fixture grooves are connected to the inner circle of the fixture body through the side holes.

[0005] The aforementioned carburizing anti-deformation fixture has its outer circle fixed.

[0006] The aforementioned carburizing anti-deformation fixture has a separate structure for the fixture body and the outer ring.

[0007] The aforementioned carburizing anti-deformation fixture has a coating on its surface, and the coating is made of a carbon-incompatible material.

[0008] The aforementioned carburizing anti-deformation fixture uses a carbon-incompatible material, which is one of Al2O3, silicon dioxide, or ceramics.

[0009] The beneficial effects of this invention are as follows:

[0010] 1. The present invention arranges the structure in order to control the deformation direction and facilitate smooth airflow, so that high concentration carbon ions can fully contact the metal surface of the steel parts, continuously carburizing the tooth surface of the product, resulting in better carburizing effect.

[0011] 2. The outer circle of the fixture body is fixed by the outer ring. The fixture body is fixed by the outer ring, which can support the tooth surface and reduce deformation.

[0012] 3. The surface of the fixture body is coated with AL2O3, silicon dioxide or ceramic to prevent carburization and oxidation of the fixture and ensure that the anti-deformation fixture can be reused. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention.

[0014] Figure 2This is a schematic diagram of the fixture body.

[0015] Figure 3 This is a schematic diagram showing carbon ion gas entering the fixture groove during operation.

[0016] Figure 4 This is a schematic diagram showing how carbon ion gas enters the inner circle of the fixture body through the side hole during operation. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] In this invention, workpiece 5 is a gear, and the deformation of the steel part is mainly due to the reduction of the inter-metallic chain force in its internal structure after heating. Under unsupported conditions, it is deformed by gravity or other extrusion forces. When it cools and solidifies, the deformation causes a decrease in product precision.

[0019] like Figures 1-4 As shown, a carburizing anti-deformation fixture includes a fixture body 1, which is a cylindrical structure. The inner circle of the fixture body 1 matches the outer surface shape of the workpiece 5. Several fixture grooves 2 are evenly distributed in a ring on the outer circle of the fixture body 1. Side holes 3 are opened on both sides of the fixture grooves 2. The fixture grooves 2 are connected to the inner circle of the fixture body 1 through the side holes 3.

[0020] The outer circle of the fixture body 1 is fixed by the outer ring 4, and the fixture body 1 and the outer ring 4 are separate structures.

[0021] After the fixture and workpiece 5 are installed, they are placed in the furnace for carburizing. When placing them, just make sure the air duct is unobstructed. During carburizing, high-concentration carbon ion gas is driven by the fan to enter the fixture slot 2 from both sides. After entering the fixture slot 2, it enters through the side hole 3 and contacts the tooth surface, continuously carburizing the tooth surface. At the same time, the fixture is fixed by the outer ring 4, which supports the tooth surface and reduces deformation.

[0022] The fixture surface is coated with a carbon-incompatible material. This carbon-incompatible material is one of Al₂O₃, silicon dioxide, or ceramics. Al₂O₃, silicon dioxide (SiO₂), and ceramics are all carbon-incompatible materials, and their softening temperatures are higher than the carburizing diffusion temperature of steel (850~950℃), preventing carburizing and oxidation of the fixture and ensuring the deformable fixture can be reused.

[0023] It should be noted that if workpiece 5 is a shaft, the structure of the anti-deformation fixture for carburizing shafts and gears is similar. The fixture and the outer ring 4 are made as a whole. The inner circle of the fixture is slotted and contacts and is fixed to the carburizing shaft. The outer ring 4 supports the shaft to keep it in a straight state to prevent deformation. During carburizing, high-concentration carbon ion gas enters the fixture groove 2 from both sides with the help of the fan, so as to achieve the purpose of carburizing and reducing deformation.

Claims

1. A carburizing anti-deformation fixture, characterized in that, It includes a fixture body, which is a cylindrical structure. The inner circle of the fixture body matches the outer surface shape of the workpiece. Several fixture slots are evenly distributed in a ring on the outer circle of the fixture body. Side holes are opened on both sides of the fixture slots, and the fixture slots are connected to the inner circle of the fixture body through the side holes.

2. The carburizing anti-deformation fixture according to claim 1, characterized in that, The outer circle of the fixture body is fixed by an outer ring.

3. The carburizing anti-deformation fixture according to claim 2, characterized in that, The fixture body and the outer ring are separate structures.

4. The carburizing anti-deformation fixture according to claim 1, characterized in that, The fixture surface is coated with a carbon-incompatible material.

5. The carburizing anti-deformation fixture according to claim 4, characterized in that, Carbon-incompatible materials include Al2O3, silicon dioxide, or ceramics.

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