阅读说明：本技术 一种异形随形冷却水道铸造模具的加工方法 (Processing method of casting mold for special-shaped conformal cooling water channel ) 是由 王晓斌 沈其文 何伟民 陈卫东 曾源 梁鉴波 于 2019-09-12 设计创作，主要内容包括：本发明公开了一种异形随形冷却水道铸造模具的加工方法,包括使用3D软件绘制模具随形冷却水道形状,根据模流分析推荐的最佳值确定模具的随形水道直径Do,绘制沿模具随形水道间距、与模具内、外侧面相切的滚动内切球,用滚动内切球沿随形水道模具的3D图形内腔滚动,确定随形水道在模具内均匀分布的最佳位置,以各种内切球确定内冷铁在模具内腔中的最佳分布位置和尺寸；本发明无需要采用繁琐的流体力学计算,而是直接根据模具的3D图形绘制其内切球大小,并沿模腔工作表面进行滚动的实用技术,便能快速确定随形冷却水道参数、内冷铁分布以及模具尺寸的实际状况,大大提高了异形随形冷却水道铸造模具的加工效率,提高了整体产品生产周期的效率。(The invention discloses a processing method of a special-shaped conformal cooling water channel casting mold, which comprises the steps of drawing the shape of a mold conformal cooling water channel by using 3D software, determining the diameter Do of the mold conformal cooling water channel according to an optimal value recommended by mold flow analysis, drawing rolling inscribed balls tangent to the inner side surface and the outer side surface of the mold along the distance of the mold conformal water channel, rolling along the 3D graph inner cavity of the mold of the conformal water channel by using the rolling inscribed balls, determining the optimal position of the conformal water channel uniformly distributed in the mold, and determining the optimal distribution position and size of internal cooling iron in the mold inner cavity by using various inscribed balls; the invention does not need to adopt complicated fluid mechanics calculation, but directly draws the size of the internal cutting ball of the mould according to the 3D graph of the mould and carries out rolling along the working surface of the mould cavity, so that the actual conditions of the shape-following cooling water channel parameters, the distribution of internal chill and the mould size can be quickly determined, the processing efficiency of the special-shaped shape-following cooling water channel casting mould is greatly improved, and the efficiency of the production cycle of the whole product is improved.)

1. A processing method of a casting mold of a special-shaped conformal cooling water channel comprises the following steps:

1) drawing the shape of the mold conformal cooling water channel by using 3D software, and determining the diameter Do of the mold conformal cooling water channel according to the optimal value recommended by the mold flow analysis;

2) drawing a rolling inscribed ball which is tangent to the inner side surface and the outer side surface of the mold along the interval of the mold conformal cooling water channels: the diameter of an inscribed sphere between the horizontal conformal cooling water channels is Ds, the diameter of an inscribed sphere between the vertical conformal cooling water channels is Dz, the diameter of an inscribed sphere between the conformal cooling water channels and the inner cavity wall of the mold is Dq, and the diameter of an inscribed sphere between the conformal cooling water channels and the outer wall of the mold is Dw, so that the parameter size of the conformal cooling water channels is determined according to Ds and Dz, the distribution positions of the conformal cooling water channels and the inner cavity of the mold can be determined according to Dq, and the thickness of the outer cavity of the mold can be determined according to the Dw;

3) determining the diameter range of each inscribed sphere according to the type of the mould, and for the mould containing a cavity, arranging the shape following water channel around the periphery of the cavity, wherein the diameter of the inscribed sphere needs to be determined to comprise Dz, Dq and Dw, and each diameter range is as follows: dz is (2-4) Do, Dq is (1-1.5) Do, Dw is (1-4) Do, for the mould that only contains conformal cooling water course, wherein the inscribed sphere diameter that needs to confirm includes Ds, Dz, Dw, and each diameter range is: ds ═ 1-2 × Do, Dz ═ 2-4 × Do, Dw ═ 1-4 × Do;

4) determining an internal cooling position according to the inscribed sphere: the inner chill comprises outer ring inner chills distributed on the periphery of the conformal water channel and inner ring inner chills distributed on the inner ring of the conformal water channel, the vertical central line of the conformal water channel and the die outer wall inscribed ball is the central line of the outer ring inner chills vertically arranged, and the diameter range of the outer ring inner chills is as follows: (1-1.5) Do, wherein the vertical central line of an inscribed ball between the shape following water channels in the horizontal direction is the central line of the inner ring of the internal chill, and the diameter range of the inner ring of the internal chill is (0.8-1.8) Do.

5) Determining the molding size of the mold according to the mold parameters, manufacturing a conformal cooling water channel sand mold and arranging internal chill according to the distribution position and size of the conformal cooling water channel and the distribution position and size of the internal chill, casting the molding mold, and demolding the molding mold after cooling to obtain the special-shaped conformal cooling water channel casting mold.

2. The processing method for the casting mold of the special-shaped conformal cooling water channel according to claim 1, wherein the mold flow analysis in the step 1) adopts Moldflow software, and the Moldflow software performs the mold flow analysis to calculate optimal data to determine the diameter Do of the conformal cooling water channel.

3. The processing method of the special-shaped conformal cooling water channel casting mold according to claim 1, wherein the value range of Do is as follows: 10 mm-12 mm.

4. The processing method of the casting mold of the special-shaped conformal cooling water channel according to claim 1, wherein the conformal cooling water channel in the step 5) is formed by 3D printing.

Technical Field

The invention particularly relates to a design method of a casting mold, and particularly relates to a processing method of a casting mold of a special-shaped conformal cooling water channel.

Background

During the process of processing and forming the die, firstly, the distribution positions and the sizes of a conformal cooling water channel and internal chill in the die are determined, a water channel sand mold is manufactured after the distribution positions and the size specifications of conformal cooling water are determined, then the conformal cooling water channel and the internal chill are placed in a forming die cavity of the die according to the determined positions for casting and forming, different cooling schemes are generally adopted for the design of the conformal cooling water channel, die flow analysis is carried out through Moldflow software, the cooling effect and the pipeline pressure distribution of different cooling schemes are compared, the internal chill used for cooling is generally arranged in the casting die, the distribution positions of the internal chill and the distribution condition of the conformal cooling water channel in the internal chill need to adopt complicated fluid mechanics calculation, then the optimal scheme is selected for the design of inserts of the conformal cooling water channel die, and the implementation period of the scheme is longer, the capital investment cost is large.

Therefore, in order to solve the above problems, there is a need for a method for processing a casting mold, which can quickly determine the sizes of the conformal cooling water channel and the internal chill in the casting mold, and the casting mold itself.

Disclosure of Invention

The invention aims to provide a processing method of a casting mold of a special-shaped conformal cooling water channel, which aims to solve the problems in the background technology.

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

a processing method of a casting mold of a special-shaped conformal cooling water channel comprises the following steps:

1) drawing the shape of the mold conformal cooling water channel by using 3D software, and determining the diameter Do of the mold conformal cooling water channel according to the optimal value recommended by the mold flow analysis;

2) drawing a rolling inscribed ball which is tangent to the inner side surface and the outer side surface of the mold along the interval of the mold conformal cooling water channels: the diameter of an inscribed sphere between the horizontal conformal cooling water channels is Ds, the diameter of an inscribed sphere between the vertical conformal cooling water channels is Dz, the diameter of an inscribed sphere between the conformal cooling water channels and the inner cavity wall of the mold is Dq, and the diameter of an inscribed sphere between the conformal cooling water channels and the outer wall of the mold is Dw, so that the parameter size of the conformal cooling water channels is determined according to Ds and Dz, the distribution positions of the conformal cooling water channels and the inner cavity of the mold can be determined according to Dq, and the thickness of the outer cavity of the mold can be determined according to the Dw;

3) determining the diameter range of each inscribed sphere according to the type of the mould, and for the mould containing a cavity, arranging the shape following water channel around the periphery of the cavity, wherein the diameter of the inscribed sphere needs to be determined to comprise Dz, Dq and Dw, and each diameter range is as follows: dz is (2-4) Do, Dq is (1-1.5) Do, Dw is (1-4) Do, for the mould that only contains conformal cooling water course, wherein the inscribed sphere diameter that needs to confirm includes Ds, Dz, Dw, and each diameter range is: ds ═ 1-2 × Do, Dz ═ 2-4 × Do, and Dw ═ 1-4 × Do.

4) Determining an internal cooling position according to the inscribed sphere: the inner chill comprises outer ring inner chills distributed on the periphery of the conformal water channel and inner ring inner chills distributed on the inner ring of the conformal water channel, the vertical central line of the conformal water channel and the die outer wall inscribed ball is the central line of the outer ring inner chills vertically arranged, and the diameter range of the outer ring inner chills is as follows: (1-1.5) Do, wherein the vertical central line of an inscribed ball between the shape following water channels in the horizontal direction is the central line of the inner ring of the internal chill, and the diameter range of the inner ring of the internal chill is (0.8-1.8) Do.

5) Determining the size of a forming die of the die according to die parameters, manufacturing a conformal cooling water channel sand mold and an inner chill according to the distribution position and the size of the conformal cooling water channel and the distribution position and the size of the inner chill, setting the conformal cooling water channel sand mold and the inner chill in the forming die, then casting the forming die, cooling and demolding the forming die to obtain a special-shaped conformal cooling water channel casting die, and finishing processing.

Further scheme: and (3) performing modular flow analysis in the step (1) by adopting a Moldflow software, and calculating optimal data by using the Moldflow software to determine the diameter Do of the conformal cooling water channel.

Further scheme: the value range of the Do is as follows: 10 mm-12 mm.

Further scheme: and 5, forming the conformal cooling water channel in the step 5 by adopting a 3D printing mode.

Compared with the prior art, the invention has the beneficial effects that: the invention does not need to adopt complicated fluid mechanics calculation, but directly draws the size of the inner tangent ball of the mould according to the 3D graph of the mould and carries out rolling along the working surface of the mould cavity, so that the invention can quickly determine the self parameter size of the conformal cooling water channel, the distribution positions of the conformal cooling water channel and the mould cavity in the mould, determine the thickness of the outer cavity of the mould and the position and the diameter of the inner chill in the mould by the conformal cooling water channel, and greatly improve the production efficiency of the casting mould.

Drawings

Fig. 1 is a schematic structural diagram of an inscribed sphere of a lunch box mold cast by a method of casting the mold by using a special-shaped conformal cooling water channel (embodiment 1).

Fig. 2 is a schematic structural view of the position of the chill in the die of the lunch box of fig. 1 (example 1).

Fig. 3 is a schematic structural view of an inscribed sphere of an outer mold of a heart-shaped cup cast by using a method of casting a mold with a special-shaped conformal cooling water channel (example 2).

Fig. 4 is a schematic structural view of the position of the chill inside the central cup-shaped outer mold of fig. 3 (example 2).

Fig. 5 is a schematic structural view of an inscribed sphere of a mold in a heart-shaped cup cast by a method of casting the mold by using a special-shaped conformal cooling water channel (example 3).

In the figure: the structure comprises a lunch box die 1, a lunch box conformal cooling water channel 10, a lunch box water channel internal cutting ball 11, a lunch box peripheral internal cutting ball 12, a lunch box central internal cutting ball 13, lunch box peripheral internal cooling iron 14, lunch box central internal cooling iron 15, a heart-shaped cup external die 2, a heart-shaped forming cavity 20, an external mold conformal cooling water channel 21, an external mold peripheral internal cutting ball 22, an external mold water channel internal cutting ball 23, an external mold forming cavity internal cutting ball 24, an external mold water channel interval internal cutting ball 25, a heart-shaped cup internal die 3, an internal mold conformal cooling water channel 30, a water guide cavity 31, an internal mold water channel internal cutting ball 32, an internal mold peripheral internal cutting ball 33, an internal mold central internal cutting ball 34 and an internal mold water channel interval internal cutting ball 35.

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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.