Sintering jig capable of preventing product deformation

Abstract

The utility model discloses a sintering jig capable of preventing a product from deforming. The sintering jig capable of preventing the product from deforming comprises a supporting plate with supporting feet, the top face of the supporting plate is a plane, a plurality of first through holes are formed in the plane, a plurality of second through holes are formed around the first through holes, and the second through holes are located in the vertical projection of the product. The utility model solves the problems that if a blank is directly placed on a graphite plate, the end face of the blank is easy to deform during sintering, the product precision is influenced, and even the blank is scrapped.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and particularly relates to a sintering fixture for preventing product deformation. Background Art

[0002] As Figure 1 shown, it is a bevel worm gear. After the blank is formed, it needs to enter a sintering furnace for sintering. If the blank is directly placed on a graphite plate, the disc part a of the bevel worm gear is likely to deform during sintering, affecting the product precision and even scrapping the product. Summary of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a sintering fixture for preventing product deformation that can ensure product precision.

[0004] To achieve the above purpose, the technical solution adopted by the sintering fixture for preventing product deformation of the utility model is as follows:

[0005] A sintering fixture for preventing product deformation includes a supporting plate with supporting feet. The top surface of the supporting plate is a plane, and a plurality of first through holes are opened on the plane. A plurality of second through holes are opened around the first through holes, and the second through holes are within the vertical projection of the product.

[0006] Preferably, the first through holes are arranged in a matrix, and the second through holes are arranged in a circle around the center of the first through holes.

[0007] Preferably, a depression for cooperating with the supporting feet is opened on the plane.

[0008] Preferably, the supporting plate is made of ceramic material.

[0009] Compared with the prior art, the utility model has the following advantages:

[0010] One end of the smooth part of the disc of the bevel worm gear (blank) is attached to the plane, and the annular boss part of the bevel worm gear (blank) extends into the first through hole. During sintering, the plane can prevent the disc part of the bevel worm gear from deforming and ensure product precision; the supporting feet support the supporting plate, which is convenient for taking and placing the supporting plate. At the same time, in cooperation with the setting of the first and second through holes (increasing the exposure area of the product), it is more conducive to the full sintering of the product and ensures the stability of the product. Description of the Drawings

[0011] Figure 1 It is a structural schematic diagram of a bevel worm gear;

[0012] Figure 2 It is a structural schematic diagram of the sintering fixture for preventing product deformation of the utility model;

[0013] Figure 3 It is an application schematic diagram of the sintering fixture for preventing product deformation of the utility model.

[0014] Among them, a is the disc part, b is the annular boss, 1 is the support plate, 2 is the support feet, 3 is the depression, 4 is the first through hole, and 5 is the second through hole. Specific implementation mode

[0015] The following further clarifies the present utility model in conjunction with the accompanying drawings and specific implementation modes. It should be understood that these implementation modes are only used to illustrate the present utility model and not to limit the scope of the present utility model. After reading the present utility model, various equivalent forms of modification by those skilled in the art fall within the scope defined by the appended claims of this application.

[0016] As Figure 2-3 shown, an anti-deformation sintering fixture for products includes a support plate 1. The support plate is made of ceramic material. By using the above-mentioned ceramic material instead of carbon material, the carburizing effect of the carbon material fixture on the blank during the sintering process is effectively avoided, thereby reducing the carbon content on the surface layer of the product and improving the mechanical properties of the product. Three support feet 2 are integrally formed at the bottom edges of the front and rear sides of the support plate respectively. The support feet support the support plate, facilitating the picking and placing of the support plate. The top surface of the support plate is a flat surface, and depressions 3 are provided on the flat surface to cooperate with the support feet. The support feet are inserted into the depressions to ensure the stability when the support plates are stacked. Thirty-two first through holes 4 are provided on the flat surface. The thirty-two first through holes are arranged in a matrix form of four rows with eight in each row. Eight second through holes 5 are provided around the first through holes. The second through holes are within the vertical projection of the product. The first through holes are used to avoid the annular boss b of the bevel worm gear, and at the same time, together with the second through holes, increase the exposed area of the bevel worm gear, which is beneficial to the full sintering of the bevel worm gear in the sintering furnace, thereby ensuring the stability of the internal structure of the bevel worm gear after sintering.

[0017] The specific working process and principle of the present utility model: During placement, the annular boss parts of the blanks are successively inserted into the first through holes one by one. The smooth end of the disc part of the blank is attached to the flat surface. According to needs, the support feet of the upper support plate can be inserted into the depressions of the lower support plate, and multiple support plates are stacked to improve production capacity; during sintering, the flat surface prevents the disc part of the blank from deforming and ensures the product accuracy. The first and second through holes increase the exposed area of the blank, which is more conducive to the full sintering of the product and ensures the stability of the internal structure of the product after sintering.

Claims

1. A sintering fixture for preventing product deformation, characterized in that: It includes a pallet with a support leg. The top surface of the pallet is a flat surface, and several first through holes are provided on the flat surface. Several second through holes are provided around the first through holes, and the second through holes are within the vertical projection of the product.

2. The anti-deformation sintering fixture according to claim 1, wherein: The first through holes are arranged in a matrix, and the second through holes are arranged in a circle around the center of the first through holes.

3. The anti-deformation sintering jig for products according to claim 1, characterized in that: A depression for mating with the support leg is provided on the flat surface.

4. The anti-deformation sintering fixture according to claim 1, characterized in that: The pallet is made of ceramic material.

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