CN218310849U

CN218310849U - Forming die of double-sided tooth

Info

Publication number: CN218310849U
Application number: CN202222599805.5U
Authority: CN
Inventors: 蓝楷; 李宁
Original assignee: Shijiazhuang Jingshi New Material Technology Co ltd
Current assignee: Shijiazhuang Jingshi New Material Technology Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-01-17
Anticipated expiration: 2032-09-30

Abstract

A forming die of double-sided teeth belongs to the field of die manufacturing and comprises a forming female die, an upper punch, a next punch, a lower second punch, a lower inner punch and a forming core rod, wherein a first groove used for forming an excircle structure of the double-sided teeth is formed in an inner cavity of the forming female die, the next punch is provided with a through hole matched with an excircle of the lower second punch, gear-shaped second grooves are formed in the upper punch and the lower second punch, a gear-shaped structure matched with the second groove of the lower second punch is arranged on the outer side of the lower inner punch, and the end parts of the upper punch, the lower first punch, the lower second punch and the lower inner punch sequentially extend into the inner cavity to form a double-sided teeth cavity; and the end part of the forming core rod respectively penetrates through the lower inner punch and the upper punch to form a shaft hole cavity. Through the structure of rational design each part, general powder metallurgy technique realizes the manufacturing of big batch, the high accuracy of two-sided tooth, reduces cost of labor and mould cost.

Description

Forming die of double-sided tooth

Technical Field

The utility model belongs to the mould field of making, concretely relates to forming die of two-sided tooth.

Background

The mould is a variety of moulds and tools used for molding the required products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping, stretching and other methods in industrial production. Powder metallurgy is an industrial technology for preparing metal powder or metal powder (or a mixture of metal powder and nonmetal powder) as a raw material, and then forming and sintering the raw material to prepare metal materials, composite materials and various products. The powder metallurgy technology has a series of advantages of obvious energy saving, material saving, excellent performance, high product precision, good stability and the like, and is very suitable for mass production. When the powder metallurgy technology is adopted to form products, the design of a die is very important.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a forming die of double-sided tooth, through the structure of each part of rational design, the manufacturing of big batch, the high accuracy of double-sided tooth is realized to general powder metallurgy technique, reduces cost of labor and mould cost.

The utility model adopts the technical proposal that: a forming die for double-sided teeth comprises a forming female die, an upper punch, a next punch, a lower second punch, a lower inner punch and a forming core rod, wherein a first groove used for forming an excircle structure of the double-sided teeth is formed in an inner cavity of the forming female die, a through hole matched with an excircle of the lower second punch is formed in the next punch, gear-shaped second grooves are formed in the upper punch and the lower second punch, a gear-shaped structure matched with the second groove of the lower second punch is formed in the outer side of the lower inner punch, and the end parts of the upper punch, the lower first punch, the lower second punch and the lower inner punch sequentially extend into the inner cavity to form a double-sided tooth cavity; and the end part of the forming core rod respectively penetrates through the lower inner punch and the upper punch to form a shaft hole cavity.

Furthermore, a boss for forming a key groove is arranged on the outer side of the forming core rod, and a key groove matched with the boss is arranged in the lower inner punch.

Further, the top of the upper punch and the top of the lower punch are provided with third grooves for forming tooth surface steps of double-sided teeth.

Furthermore, the unilateral clearance between the forming female die and the upper punch and the next punch is 0.01-0.015mm.

Furthermore, the gaps between the forming core rod and the single side of the lower secondary punching and the single side of the lower inner punching are 0.01-0.015mm.

Adopt the utility model discloses the beneficial effect who produces: through the structure of each part of rational design, general powder metallurgy technique realizes the manufacturing of big batch, the high accuracy of two-sided tooth, reduces cost of labor and mould cost.

Drawings

Fig. 1 is a schematic view of the overall structure of the forming die of the present invention;

FIG. 2 is a schematic view of the structure of the lower punch;

FIG. 3 is a schematic view of a forming mandrel;

fig. 4 is a schematic structural view of the double-sided teeth formed by the mold of the present invention.

Detailed Description

Referring to the attached drawings 1-4, a forming die for double-sided teeth comprises a forming female die 1, an upper punch 2, a lower punch 3, a lower punch 4, a lower inner punch 5 and a forming core rod 6, wherein a first groove 1-1 for forming an excircle structure of the double-sided teeth is formed in an inner cavity of the forming female die 1, the lower punch 3 is provided with a through hole 3-1 matched with an excircle of the lower punch 4, gear-shaped second grooves 7 are formed in the upper punch 2 and the lower punch 4, a gear-shaped structure matched with the second groove 7 of the lower punch 4 is arranged on the outer side of the lower inner punch 5, and the end parts of the upper punch 2, the lower punch 3, the lower punch 4 and the lower punch 5 sequentially extend into the inner cavity to form a double-sided teeth cavity; the end part of the forming core rod 6 respectively penetrates through the lower inner punch 5 and the upper punch 2 to form a shaft hole cavity.

A boss 6-1 for forming a key groove is arranged on the outer side of the forming core rod 6, and a key groove 6-2 matched with the boss 6-1 is arranged in the lower inner punch 5.

The top of the upper punch 2 and the lower punch 4 is provided with a third groove 9 for forming a tooth surface step 8 of the double-sided tooth.

In order to ensure the precision of the formed coupler, the unilateral clearance between the forming female die 1 and the upper punch 2 and the next punch 3 is 0.01-0.015mm. The single-side gaps between the forming core rod 6 and the lower secondary punch 4 and between the forming core rod and the lower inner punch 5 are 0.01-0.015mm.

The utility model discloses a mould is when specifically using, and each part in the device is supporting as required to have lift drive. Firstly, a forming female die 1, a next punch 3, a next punch 4 and a lower inner punch 5 are matched with each other to form a die cavity, then powder is filled in the die cavity, a forming core rod 6 is lifted, an upper punch 2 is lowered, and opposite punching pressing is carried out to obtain the double-sided teeth. After the pressing is finished, the next forming punch 3, the second forming punch 4, the inner lower punch 5 and the forming core rod 6 respectively descend, the upper punch 2 ascends, the formed workpiece is taken out, and the demolding is finished.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: modifications can still be made to the embodiments of the invention or equivalents may be substituted for some of the features; without departing from the spirit of the technical solution of the present invention, the present invention should be covered by the technical solution of the present invention.

Claims

1. The utility model provides a forming die of two-sided tooth, includes shaping bed die (1), goes up punch (2), next dashes (3), down two dashes (4), down interior dashes (5) and shaping plug (6), its characterized in that: a first groove (1-1) for forming a double-sided tooth excircle structure is arranged in an inner cavity of the forming female die (1), a through hole (3-1) matched with an excircle of the lower punch (4) is formed in the lower punch (3), gear-shaped second grooves (7) are arranged in the upper punch (2) and the lower punch (4), a gear-shaped structure matched with the second groove (7) of the lower punch (4) is arranged on the outer side of the lower punch (5), and the end parts of the upper punch (2), the lower punch (3), the lower punch (4) and the lower punch (5) sequentially extend into the inner cavity to form a double-sided tooth cavity; and the end part of the forming core rod (6) respectively penetrates through the lower inner punch (5) and the upper punch (2) to form a shaft hole cavity.

2. The double-sided tooth forming mold according to claim 1, wherein: a boss (6-1) for forming a key groove is arranged on the outer side of the forming core rod (6), and a key groove (6-2) matched with the boss (6-1) is arranged in the lower inner punch (5).

3. The double-sided teeth molding die of claim 1, wherein: and third grooves (9) for forming tooth surface steps (8) of the double-sided teeth are formed at the tops of the upper punch (2) and the lower second punch (4).

4. The double-sided teeth molding die of claim 1, wherein: and the unilateral clearance between the forming female die (1) and the upper punch (2) and the next punch (3) is 0.01-0.015mm.

5. The double-sided teeth molding die of claim 1, wherein: the forming core rod (6) and the lower secondary punch (4) and the lower inner punch (5) are respectively provided with a single-side gap of 0.01-0.015mm.