阅读说明：本技术 一种定子链轮粉末冶金零件的整形结构和方法 (Shaping structure and method for stator sprocket powder metallurgy part ) 是由 张秋伢 潘利功 于 2019-10-19 设计创作，主要内容包括：本发明涉及冶金领域,尤其涉及一种定子链轮粉末冶金零件的整形结构和方法。整形结构包含上冲部分和下冲部分,上冲部分和下冲部分之间能放置产品,该产品为定子链轮,该定子链轮包含链轮以及凸起；所述的上冲部分包含整形一上冲和整形二上冲；所述的下冲部分包含整形二下冲和整形一下冲；还包含整形阴模部分；相对传统铸件有了更大的优势,加工简单,加工量少,可以促使粉末冶金产品在汽车领域的更大的发展。(The invention relates to the field of metallurgy, in particular to a shaping structure and a shaping method for a stator sprocket powder metallurgy part. The shaping structure comprises an upper punching part and a lower punching part, wherein a product can be placed between the upper punching part and the lower punching part, the product is a stator chain wheel, and the stator chain wheel comprises a chain wheel and a protrusion; the upper punch part comprises a shaping first upper punch and a shaping second upper punch; the undershoot part comprises a shaping second undershoot and a shaping first undershoot; also comprises a shaping female die part; compared with the traditional casting, the method has the advantages of being simple in processing and small in processing amount, and can promote the greater development of the powder metallurgy product in the field of automobiles.)

1. A shaping structure of a stator sprocket powder metallurgy part is characterized in that the shaping structure comprises an upper punch part and a lower punch part, a product can be placed between the upper punch part and the lower punch part, the product is a stator sprocket, and the stator sprocket comprises a sprocket and a protrusion; the upper punch part comprises a shaping first upper punch and a shaping second upper punch; the undershoot part comprises a shaping second undershoot and a shaping first undershoot; also comprises a shaping female die part;

the shaping two-lower punch structure (16) is arranged on the two-lower punch power supply plate (20) through a two-lower punch cover (17), a two-lower punch pressure bearing plate (18) and a two-lower punch gasket (19);

a lower punch (11) is shaped and installed on a lower punch power supply plate (15) through a lower punch cover (12), a lower punch bearing plate (13) and a lower punch gasket (14);

the shaping female die part comprises a shaping female die (9), and the shaping female die (9) is arranged on a female die plate (10);

the shaping second upper punch comprises a shaping core rod (4), and the shaping core rod (4) is arranged on the second upper punch power supply plate (1) through a core rod catcher (3) and a core rod gland (2);

a shaping upper punch (8) is mounted on an upper punch power supply plate (5) through an upper punch pressing cover (7) and an upper punch bearing plate (6).

2. The shaping structure of a stator sprocket powder metallurgy part according to claim 1, wherein the two lower punch covers (17), the two lower punch press plates (18) and the two lower punch washers (19) are integrally manufactured or are connected to each other by bolts; the shaping two-lower punch structure (16) is installed on the two-lower punch cover (17) through bolts.

3. The truing structure for a stator sprocket powder metallurgy part according to claim 1, wherein a lower punch cover (12), a lower punch bearing plate (13) and a lower punch washer (14) are integrally manufactured or bolted to each other; a lower punch (11) for shaping is mounted on a lower punch cover (12) by bolts.

4. The shaping structure of a stator sprocket powder metallurgy part according to claim 1, wherein the upper punch cover (7), the upper punch pressure plate (6) and the two upper punch force providing plates (1) are bolted to each other; the shaping upper punch (8) is arranged on the upper punch press cover (7) through a bolt.

5. The shaping structure of a stator sprocket powder metallurgy part according to claim 1, wherein the shaping mandrel (4) is connected with the two upper thrust force providing plates (1) through a mandrel catcher (3), a mandrel gland (2) and a mandrel by bolts; the shaping mandrel (4) is arranged on the mandrel catcher (3) through a bolt.

6. The shaping structure of a stator sprocket powder metallurgy part according to claim 1, wherein the shaping die (9) is mounted on the die plate (10) by bolts.

7. The truing structure for a stator sprocket powder metallurgy part as claimed in claim 1, wherein said lower punch portion comprises a punched-in-hole recess (23), said punched-in-hole recess (23) being adapted to receive a sprocket projection (22), said sprocket projection (22) and said sprocket body (21) forming a sprocket assembly.

8. A method for shaping a stator sprocket powder metallurgy part, characterized in that the shaping structure of any one of claims 1 to 7 is used, comprising the steps of,

shaping and die filling: firstly, a shaping second lower punch structure (16) is installed, and the shaping second lower punch structure (16) is fixed on a second lower punch bearing plate (18); secondly, shaping a lower punch (11) and installing the lower punch on a lower punch power supply plate (15);

the shaping female die (9) is arranged on the female die plate (10);

then, a shaping core rod (4) is installed, and the shaping core rod (4) is installed on the two upper punch bearing plates (1); finally, an upper punch (8) is installed and shaped on an upper punch bearing plate (5);

shaping a product: during shaping, the chain wheel protrusion faces downwards, a product, namely the chain wheel is placed in a shaping female die (9), the chain wheel protrusion is matched with a groove of a lower punch inner hole to play a positioning role, after the product is placed, a shaping first upper punch is pressed downwards, a shaping core rod arranged on a shaping second upper punch is also pressed downwards until the product enters an inner cavity of the product, and the chain wheel is contacted with a shaping lower punch end face and a shaping second lower punch end face to start pressurization; and after the pressure is reached, the upper punch part rises, the shaping core rod rises to be separated from the surface of the female die, then the shaping first lower punch and the shaping second lower punch push the product out of the female die, and the shaping of the product is finished.

Technical Field

The invention relates to the field of metallurgy, in particular to a shaping structure and a shaping method for a stator sprocket powder metallurgy part.

Background

Variable valve timing systems have been widely used at present as a technique for improving engine efficiency. The sprocket cover plate rotor stator of the core component gradually replaces cast parts because the powder parts are lighter in weight and lower in cost than the cast parts. In the variable valve timing system, a stator and a chain wheel are integrated, so that the variable valve timing system is more compact in structure and simpler in structure, but the part is troublesome to machine, especially for powder parts. The chain wheel has teeth in the inner cavity and teeth outside, and is integrally of a flange structure, so that the requirement on shaping of products is high. The conventional one-on-one structure has not met the requirements, and a shaping structure of such a sprocket part is described below.

Disclosure of Invention

The purpose of the invention is as follows: the concrete purpose is to provide a shaping structure and a shaping method of a stator sprocket powder metallurgy part with better effect, and see a plurality of substantial technical effects of the concrete implementation part.

In order to achieve the purpose, the invention adopts the following technical scheme:

the first scheme is as follows:

a shaping structure of a stator sprocket powder metallurgy part is characterized in that the shaping structure comprises an upper punch part and a lower punch part, a product can be placed between the upper punch part and the lower punch part, the product is a stator sprocket, and the stator sprocket comprises a sprocket and a protrusion; the upper punch part comprises a shaping first upper punch and a shaping second upper punch; the undershoot part comprises a shaping second undershoot and a shaping first undershoot; also comprises a shaping female die part;

the shaping two-lower punch structure 16 is arranged on a two-lower punch power supply plate 20 through a two-lower punch cover 17, a two-lower punch pressure bearing plate 18 and a two-lower punch gasket 19;

a lower punch 11 is shaped and mounted on a lower punch power providing plate 15 through a lower punch cover 12, a lower punch pressure bearing plate 13 and a lower punch washer 14;

the shaping female die part comprises a shaping female die 9, and the shaping female die 9 is arranged on a female die plate 10;

the shaping second upper punch comprises a shaping core rod 4, and the shaping core rod 4 is arranged on the second upper punch power supply plate 1 through a core rod catcher 3 and a core rod gland 2;

a shaping upper punch 8 is mounted on an upper punch power supply plate 5 through an upper punch cover 7 and an upper punch bearing plate 6.

The invention further adopts the technical scheme that the two lower punch covers 17, the two lower punch pressure bearing plates 18 and the two lower punch gaskets 19 are integrally manufactured or are connected with each other through bolts; the shaping two-lower punch structure 16 is mounted on a two-lower punch cover 17 through bolts.

A further technical solution of the present invention is that a lower punch cover 12, a lower punch pressure bearing plate 13 and a lower punch washer 14 are integrally manufactured or are connected to each other by bolts; a lower punch 11 is shaped and mounted on a lower punch cover 12 by bolts.

The further technical scheme of the invention is that the upper punch gland 7, the upper punch bearing plate 6 and the two upper punch power supply plates 1 are connected with each other through bolts; a shaping punch 8 is mounted on the punch cover 7 by bolts.

The further technical scheme of the invention is that the shaping core rod 4 is connected with the two upper punching power supply plates 1 through the core rod catcher 3, the core rod gland 2 and the two upper punching power supply plates through bolts; the shaping mandrel 4 is mounted on the mandrel catcher 3 by means of bolts.

The further technical scheme of the invention is that a shaping female die 9 is arranged on a female die plate 10 through bolts;

the invention has the further technical scheme that the lower punching part comprises a groove 23 for punching an inner hole, the groove 23 for punching the inner hole can accommodate the chain wheel bulge 22, and the chain wheel bulge 22 and the chain wheel body 21 form the whole chain wheel.

Scheme II:

a shaping method of a stator sprocket powder metallurgy part is characterized in that the shaping structure is utilized, and the shaping method comprises the following steps,

shaping and die filling: firstly, a shaping second lower punch structure 16 is installed, and the shaping second lower punch structure 16 is fixed on a second lower punch bearing plate 18; secondly, shaping a lower punch 11 and installing the lower punch on a lower punch power supply plate 15;

the shaping female die 9 is arranged on the female die plate 10;

then, installing a shaping core rod 4, wherein the shaping core rod 4 is installed on the two upper punch bearing plates 1; finally, an upper punch 8 is installed and shaped on an upper punch bearing plate 5.

Shaping a product: during shaping, the chain wheel protrusion faces downwards, a product, namely the chain wheel is placed in the shaping female die 9, the chain wheel protrusion is matched with a groove of a lower punch inner hole to play a positioning role, after the product is placed, the shaping first upper punch is pressed downwards, the shaping core rod arranged on the shaping second upper punch is also pressed downwards until the product enters an inner cavity of the product, and the chain wheel is contacted with the shaping lower punch end face and the shaping second lower punch end face to start pressurization; and after the pressure is reached, the upper punch part rises, the shaping core rod rises to be separated from the surface of the female die, then the shaping first lower punch and the shaping second lower punch push the product out of the female die, and the shaping of the product is finished.

Compared with the prior art, the invention adopting the technical scheme has the following beneficial effects: after the shaping method of powder metallurgy is produced by experiments, all standards can meet the requirements of drawings. For the chain wheel with the structure, the powder metallurgy technology can also be normally produced, and compared with the traditional casting, the chain wheel has the advantages of greater advantage, simple processing and less processing amount, and can promote the greater development of powder metallurgy products in the automobile field.

Drawings

To further illustrate the present invention, further description is provided below with reference to the accompanying drawings:

FIG. 1 is a schematic diagram of the inventive structure;

FIG. 2 is a schematic front view of the sprocket;

FIG. 3 is a side view of the sprocket;

wherein: 1 two upper thrust force providing plates; 2, pressing a cover by a core rod; 3, replacing the core rod; 4. shaping the core rod; 5 an upper punch bearing plate; 6, punching a bearing plate; 7, punching a gland cover; 8 shaping an upper punch; 9 shaping the female die; 10, a female template; 11 shaping an undershoot; 12 a lower punch cover; 13 punching the bearing plate; 14 a lower punch washer; 15 a lower impact power supply plate; 16 shaping a two-undershoot structure; 17 two lower punching press covers; 18 two lower punching bearing plates; 19 two lower punching washers; 20 two lower punching power supply plates, 21, a chain wheel body; 22. the chain wheel is raised; 23. and punching the groove of the inner hole.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The patent provides a plurality of parallel schemes, and different expressions belong to an improved scheme based on a basic scheme or a parallel scheme. Each solution has its own unique features.