Compressor piston post blank

Abstract

The utility model discloses a kind of compressor piston column blank, including body, body is steel cylinder, central setting cylinder recess, cylinder recess two sides symmetrically setting boss, boss one side is connected with cylinder recess, other side is rectangular, the central setting of each boss is a pinhole. The utility model structure design is reasonable ingenious, overall structure is simple, can be formed by metal powder die casting, hole perpendicularity, depth precision is higher, and the wall thickness of body is thin, reduce weight, while boss can strengthen structural strength, boss can also be used as subsequent processing fixed stress point.

Description

Technical Field

[0001] This utility model relates to a compressor piston column blank. Background Technology

[0002] With the increasing emphasis on energy conservation and emission reduction, the performance requirements for compressors are becoming more stringent. The increasing demands on piston wear resistance and hardness have made machining the traditional milling and turning process for piston elastic pin holes more difficult, directly affecting the hole's position and perpendicularity, and exacerbating tool wear. To prevent piston deformation during milling and turning, the piston rod wall thickness needs to be increased, which increases both cost and piston weight, ultimately reducing compressor performance. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, this utility model provides a compressor piston column blank with a simple and reasonable structure that balances the strength and weight of the piston column.

[0004] To achieve this objective, the structure adopted by this utility model is as follows: a compressor piston blank, including a body, wherein the body is a column integrally formed by metal powder die casting, a cylindrical recess is provided in the center, and protrusions are symmetrically arranged on both sides of the cylindrical recess. One side of the protrusion is connected to the cylindrical recess, and the other side is rectangular. A pin hole is provided in the center of each protrusion, and the center line of the pin hole is parallel to the center line of the body.

[0005] The thickness of the center of the protrusion is 1.5-2.5 times the thickness of the body wall.

[0006] The edges of the bump are chamfered, and the connection between the bump and the body is rounded.

[0007] The width of the bump is 0.3-0.5 times the diameter of the cylindrical recess.

[0008] Its beneficial effects are: the structure of this utility model is reasonable and ingenious, the overall structure is simple, it can be formed by metal powder die casting, the hole verticality and depth accuracy are higher, and the wall thickness of the body is thin, which reduces the weight. At the same time, the protrusion can strengthen the structural strength, and the protrusion can also serve as a fixed force point for subsequent processing. Attached Figure Description

[0009] This utility model will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a top view of the present invention; Figure 2 This is a cross-sectional view of the present invention. Detailed Implementation

[0010] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0011] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0012] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components; a fixed connection can be welding or adhesive bonding. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0013] like Figure 1 , Figure 2 The compressor piston blank shown includes a body, which is a cylindrical shape integrally formed by metal powder die casting. The metal powder comprises 0.65% C, 0.25% S, and the remainder Fe. The diameter of the body 1 is 1.4-1.5 times its height. A cylindrical recess 2 is provided at the center of one end of the body 1. Protrusions 3 are symmetrically arranged on both sides of the cylindrical recess. One side of the protrusion 3 is arc-shaped and connected to the cylindrical recess 2, while the other side is rectangular and faces the center. A pin hole 4 is provided in the center of each protrusion 3, and the center line of the pin hole 4 is parallel to the center line of the body 1.

[0014] The thickness of the center of the protrusion 3 is 1.5-2.5 times the thickness of the body wall.

[0015] The edges of bump 3 are chamfered, and the connection between bump 3 and body 1 is rounded.

[0016] The width of the protrusion 3 is 0.3-0.5 times the diameter of the cylindrical recess 2.

[0017] Because of its simple overall design and smooth surface without any hidden depressions, the powder can completely fill the mold during die casting, resulting in high dimensional accuracy in the finished product, including hole verticality and depth. The protruding bumps 3 can increase the strength of the body 1 structure and serve as clamping points during subsequent processing, preventing deformation of the body 1. The wall thickness of the body 1 can be reduced, ensuring wear resistance and strength while lowering the overall weight and cost, and reducing the impact of piston column weight on compressor performance.

[0018] Based on the above description and inspired by this utility model, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A compressor piston blank, comprising a body (1), characterized in that, The main body (1) is a column formed by die casting of metal powder. A cylindrical recess (2) is provided in the center. Protrusions (3) are symmetrically arranged on both sides of the cylindrical recess (2). One side of the protrusion (3) is connected to the cylindrical recess (2), and the other side is rectangular. A pin hole (4) is provided in the center of each protrusion. The center line of the pin hole (4) is parallel to the center line of the main body (1).

2. The compressor piston blank according to claim 1, characterized in that, The thickness of the center of the protrusion (3) is 1.5-2.5 times the wall thickness of the body (1).

3. The compressor piston blank according to claim 1, characterized in that, The edges of the protrusion (3) are chamfered, and the connection between the protrusion (3) and the body (1) is rounded.

4. The compressor piston blank according to claim 1, characterized in that, The width of the protrusion (3) is 0.3-0.5 times the diameter of the cylindrical recess (2).

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