CN112846028A

CN112846028A - Balanced cylinder bottom production mould

Info

Publication number: CN112846028A
Application number: CN202011495905.2A
Authority: CN
Inventors: 秦冰超; 许慧杰; 王腾飞; 郭文强; 侯潇峰; 张鸿超
Original assignee: Zhengzhou Coal Machine Green Material Technology Co ltd
Current assignee: Zhengzhou Coal Machine Green Material Technology Co ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-05-28

Abstract

The invention provides a balance cylinder bottom production mold, wherein a cavity is positioned in the middle of the mold, the cavity and the balance cylinder bottom are in the same structural shape, the cavity is divided into an upper part, a middle part and a lower part from top to bottom, the upper part of the cavity is in a smooth hemispherical shape, the middle part of the cavity is in a conical shape, and the upper part of the cavity is provided with an open type opening. The beneficial effects are as follows: the blank oxide skin of the die is easy and quick to clean, the cleaning effect is good, and the problem of an oxide skin pit of a forge piece can be obviously solved; the blank volume distribution is more reasonable after the structure of the die cavity is optimized, and the quality defects of folding, insufficient filling and the like of the finished product of the forge piece can be effectively reduced; because the problems of scale pit and folding of the forged piece are the main reasons of later-stage cleaning and grinding, which account for about 65% of the cleaning and grinding workload, the invention can greatly improve the quality of the forged piece, improve the production efficiency, reduce the labor intensity of workers, improve the labor environment of the workers, reduce the production cost and the like.

Description

Balanced cylinder bottom production mould

Technical Field

The invention relates to the field of balance cylinder bottom manufacturing, in particular to a balance cylinder bottom production mold.

Background

The balance cylinder bottom is used as an important part of a jack, a pillar and other hydraulic support parts, is a key product produced by our company, has multiple specifications and large quantity, but has quality problems of folding, insufficient filling, oxide skin pits and the like for a long time, and the quality problems are solved because the repair and the cleaning tasks of the movable parts are heavy in the later period, the production plan is seriously influenced, the cost is high and the like; the prior blank making mode can not meet the production requirement.

The balance cylinder bottom is limited in appearance, the forming quality of a finished product is closely related to the shape of a blank, the height of the blank manufactured by the existing die is manually controlled, the appearance difference is large, and if the deviation between the upsetting part and the conical part is too large, the quality defects of folding, underfilling and the like of the finished product forged piece are directly caused; when the blank is forged, the blank-making cavity is positioned below the blank, and oxide skin is accumulated at the bottom and is not easy to remove, so that oxide skin pits on the surface of a finished product forged piece are deep and numerous; the work piece repair task is heavy in the later period, the cost is high, the production period is seriously influenced, and the quality problem is to be solved.

Disclosure of Invention

The invention provides a balanced cylinder bottom production die for solving the problems in the prior art.

The technical scheme of the invention is realized as follows:

a balanced cylinder bottom production mold comprising: the mould is provided with a cavity, the cavity is positioned in the middle of the mould, the structural shape of the cavity is the same as that of the balance cylinder bottom, the cavity is divided into an upper part, a middle part and a lower part from top to bottom, the upper part of the cavity is smooth and hemispherical, the middle part of the cavity is conical, and the upper part of the cavity is an open opening.

Furthermore, the taper of the conical body in the middle of the cavity is 0.35-0.45.

Further, the inclination angle a of the opening at the upper part of the cavity is 25-35 degrees.

The invention has the beneficial effects that: the blank oxide skin of the die is easy and quick to clean, the cleaning effect is good, and the problem of an oxide skin pit of a forge piece can be obviously solved; the blank volume distribution is more reasonable after the structure of the die cavity is optimized, and the quality defects of folding, insufficient filling and the like of the finished product of the forge piece can be effectively reduced; because the problems of scale pit and folding of the forged piece are the main reasons of later-stage cleaning and grinding, which account for about 65% of the cleaning and grinding workload, the invention can greatly improve the quality of the forged piece, improve the production efficiency, reduce the labor intensity of workers, improve the labor environment of the workers, reduce the production cost and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the prior art.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

As shown in fig. 1 to 2, a mold for producing a balance cylinder bottom includes: the mould comprises a mould 1 with a cavity 2, wherein the cavity 2 is positioned in the middle of the mould 1, the cavity 2 is the same as the structural shape of a balance cylinder bottom, the cavity 2 is divided into an upper part, a middle part and a lower part from top to bottom, the upper part 3 of the cavity is smooth and hemispherical, the middle part 4 of the cavity is conical, and the lower part 5 of the cavity is an open opening; the taper of the conical body in the middle part 4 of the cavity is 0.35-0.45; the inclination angle a of the opening of the lower part 5 of the cavity is 25-35 degrees.

The blank oxide skin of the die 1 is easy and quick to clean, the cleaning effect is good, and the problem of an oxide skin pit of a forge piece can be obviously solved; the blank volume distribution is more reasonable after the structure of the cavity 2 of the die 1 is optimized, and the quality defects of folding, underfilling and the like of the finished product of the forge piece can be effectively reduced; because the problems of scale pit and folding of the forged piece are the main reasons of later-stage cleaning and grinding, which account for about 65% of the cleaning and grinding workload, the invention can greatly improve the quality of the forged piece, improve the production efficiency, reduce the labor intensity of workers, improve the labor environment of the workers, reduce the production cost and the like.

Example one

The die cavity 2 is divided into an upper part, a middle part and a lower part from top to bottom, the upper part 3 of the die cavity is smooth and hemispherical, the die cavity 2 is positioned above a blank, after casting, oxide skin with a hemispherical structure can naturally fall off in the forging process, the oxide skin can be simply and quickly cleaned by matching with air pipe equipment, the blank forming quality is better, the middle part 4 of the die cavity is conical, the conicity is properly reduced relative to the middle part of the die cavity of the original die 1, the effective height is properly increased, the conicity of the middle part of the die cavity of the original die 1 is 0.48-0.55, the conicity is reduced to 0.40, the blank volume distribution is more reasonable, the metal flow law is better met, and the quality defects of folding, insufficient filling; the die cavity lower part 3 is the open-type opening, and the inclination angle a of the opening of die cavity lower part 3 is 30, utilizes the high forging stock height of guaranteeing of forging hammer whereabouts in actual production, improves the forging quality greatly, prevents that the quality accident from appearing in the blank.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A balanced cylinder bottom production mould characterized by comprising: the mould is provided with a cavity, the cavity is positioned in the middle of the mould, the structural shape of the cavity is the same as that of the balance cylinder bottom, the cavity is divided into an upper part, a middle part and a lower part from top to bottom, the upper part of the cavity is smooth and hemispherical, the middle part of the cavity is conical, and the upper part of the cavity is an open opening.

2. The balance cylinder bottom producing mold according to claim 1, wherein: the taper of the conical body in the middle of the cavity is 0.35-0.45.

3. The balance cylinder bottom producing mold according to claim 1, wherein: the inclination angle a of the opening at the upper part of the cavity is 25-35 degrees.