CN212495122U

CN212495122U - Pre-forging die

Info

Publication number: CN212495122U
Application number: CN201922178627.7U
Authority: CN
Inventors: 张瑞丽; 安苏娟; 李明
Original assignee: Shaanxi Hongyuan Aviation Forging Co Ltd
Current assignee: Shaanxi Hongyuan Aviation Forging Co Ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2021-02-09
Anticipated expiration: 2029-12-06

Abstract

The utility model relates to a forge die in advance, including last mould (1), lower mould (2) and parting line face (3), its characterized in that, parting line face (3) are by finish forging die utensil parting line face (4) clockwise upset 90 and form. The finish forging die parting surface (4) is determined by the design basis of parts. And the cavities of the upper die (1) and the lower die (2) are cavities dug out on the die blocks according to the design drawing of the pre-forging piece. The advantage of this patent is: the surface quality of the blank is ensured by the design and the use of the special pre-forging die.

Description

Pre-forging die

Technical Field

The utility model relates to a forge the field, especially relate to a design of preforging mould.

Background

With the rapid development of science and technology, the requirements of various industries are more strict and accurate. The requirements of aerospace products on the surface quality and the attractiveness of parts are more and more strict, so that the manufacturing technology is continuously improved in the aspects of finish machining and material saving. For some special-shaped parts with large section variation and closed ribs, except for pre-blanking before forging, surface defects and subsequent grinding amount need to be reduced, so that the reduction or the stop of the generation of folding in the forging process is particularly important. The long rod type part is provided with a high platform and a sealing rib, the distance between the two ribs is short, and the surface quality of the finally formed part is ensured through the design and the use of a pre-forging die.

Disclosure of Invention

The utility model aims to solve the technical problem of how to reduce the folding (including the times of the folding and the weight of the folding).

The technical scheme of the utility model is that:

in a first aspect, there is provided a blocker comprising: the pre-forging die is a type groove manufactured after the parting surface is adjusted, the type groove is a cavity dug after the sealing rib is filled and the overall dimension of the part is adjusted in the type groove manufactured after the parting surface is adjusted, and the parting surface of the cavity is vertical to the parting surface of the part; the size of the cavity is as follows: the shape is smaller than the part, the depth is larger than the part, and the cavity of the upper die and the cavity of the lower die form a preset cavity.

Furthermore, the size and the cross-sectional shape of the pre-forging piece forged by the pre-forging die are determined by the size and the cross-sectional shape of the preset pre-forging groove.

Further, the cross-sectional shape of the pre-forging die groove is trapezoidal.

The specific scheme is as follows:

a pre-forging die comprises an upper die 1, a lower die 2 and a die parting surface 3, wherein the die parting surface 3 is formed by clockwise turning a finish forging die parting surface 4 by 90 degrees.

The finish forging die parting surface 4 is determined by the design basis of parts. The die cavities of the upper die 1 and the lower die 2 are cavities dug out on the die block according to the design drawing of the pre-forging piece. The cavity position of the upper die 1 completely corresponds to the cavity of the lower die 2. And the die cavity of the upper die 1 and the die cavity of the lower die 2 form a die cavity of a pre-forging piece 5. The height difference of the cavity of the pre-forging piece 5 is reduced to 16.5mm from 57mm of the finish forging cavity, and the forging piece is more favorably formed. The section of the cavity rod part of the pre-forging piece 5 is trapezoidal, so that the folding is effectively avoided.

The utility model has the advantages that: the surface quality of the blank is ensured by the design and the use of the special pre-forging die.

Drawings

FIG. 1 is a schematic view of the upper die structure;

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

FIG. 3 is a schematic illustration of a part design;

FIG. 4 is a schematic view of part design according to die parting plane

Detailed Description

The utility model discloses the part of development, material are 30CrMnSiNi2A, and this part biggest characteristics are that the drop is big, and pole portion is the I shape cross-section, for reducing folding production in the production process. In the development process, a series of reasonable and feasible process measures are required to meet the part forming requirements and the requirements on final size and surface quality.

The method is further illustrated in detail by the specific examples below.

The structure of a part of a certain type is shown in figures 3 and 4, the height difference between the high point and the low point of the part is 57mm, and the rod part is in an I-shaped cross section. When the pre-forging die is designed, in order to reduce the forming difficulty, the die parting surface of the finish forging die is turned by 90 degrees clockwise to form the die parting surface of the pre-forging die, and the fall between a high point and a low point is reduced to 16.5 mm. To avoid the occurrence of folds, the preforging shank is trapezoidal in design.

The shape and the bending angle after the preforging are consistent with the height of the final forging. The surface quality qualified rate of all forgings after die forging and finish forging reaches 100 percent.

The utility model provides a one set of forging die in advance, include: and forging the blank to the design size of the die by using the preforging die to obtain a preforging piece.

Claims

1. A pre-forging die is characterized by comprising an upper die (1), a lower die (2) and a die parting surface (3), wherein the die parting surface (3) is formed by clockwise turning a die parting surface (4) of a finish-forging die by 90 degrees; the die cavity of the upper die (1) and the die cavity of the lower die (2) form a die cavity of the pre-forging piece (5); the drop height of the cavity of the pre-forging piece (5) is reduced to 16.5mm from 57mm of the finish forging cavity; the section of the cavity rod part of the pre-forging piece (5) is trapezoidal.

2. A blocker according to claim 1 wherein the finish die parting face (4) is determined according to part design.

3. A blocker die according to claim 1 wherein the cavities of the upper and lower dies (1, 2) are cavities dug out on the die block according to the design of the pre-forging (5).

4. A preforging die as claimed in claim 3, wherein the upper die (1) cavity location corresponds exactly to the lower die (2) cavity location.