阅读说明：本技术 一种导流环铸件数控加工模具及其制造方法 (Numerical control machining die for guide ring casting and manufacturing method thereof ) 是由 宋志宇 王祥宇 莫增永 于 2020-04-12 设计创作，主要内容包括：一种导流环铸件数控加工模具及其制造方法,模具分为导流环铸件模具和导流环铸件芯盒模具两个部件；导流环铸件模具的木材框架的圆柱形底座的外圆柱面是由若干个矩形板A均匀排布构成,相邻的矩形板A之间留有缝隙；导流环铸件模具的木材框架的内圆柱面是由若干个矩形板B均匀排布构成,相邻的矩形板B之间留有缝隙；导流环铸件模具的木材框架的其他部位由若干块成型木板或木块拼接构成,外皮覆盖层粘贴覆盖在木材框架上。本发明通过对导流环铸件模具复合结构的改进以及对模具覆盖层材料配方的改进,提高模具覆盖材料对生产环境变化的适应能力,能够配合数控机床对模具产品的精修加工,从而提高导流环铸件模具的加工精度、质量和产量。(A numerical control machining die for a guide ring casting and a manufacturing method thereof are disclosed, wherein the die is divided into a guide ring casting die and a guide ring casting core box die; the outer cylindrical surface of the cylindrical base of the wood frame of the guide ring casting mold is formed by uniformly arranging a plurality of rectangular plates A, and gaps are reserved between the adjacent rectangular plates A; the inner cylindrical surface of the wood frame of the guide ring casting mold is formed by uniformly arranging a plurality of rectangular plates B, and gaps are reserved between the adjacent rectangular plates B; the other parts of the wood frame of the guide ring casting mold are formed by splicing a plurality of formed wood boards or wood blocks, and the outer skin covering layer is adhered to and covers the wood frame. According to the invention, through the improvement of the composite structure of the guide ring casting mold and the improvement of the formula of the mold covering material, the adaptability of the mold covering material to the production environment change is improved, and the precision trimming processing of a mold product by a numerical control machine tool can be matched, so that the processing precision, the quality and the yield of the guide ring casting mold are improved.)

1. A numerical control machining die for a guide ring casting is divided into a guide ring casting die and a guide ring casting core box die; the guide ring casting mold is characterized by comprising a wood frame and a skin covering layer, wherein the outer cylindrical surface of a cylindrical base of the wood frame of the guide ring casting mold is formed by uniformly arranging a plurality of rectangular plates A, and gaps are reserved between the adjacent rectangular plates A; the inner cylindrical surface of the wood frame of the guide ring casting mold is formed by uniformly arranging a plurality of rectangular plates B, and gaps are reserved between the adjacent rectangular plates B; the other parts of the wood frame of the guide ring casting mold are formed by splicing a plurality of formed wood boards or wood blocks, and the outer skin covering layer is adhered to and covers the wood frame.

2. The numerical control machining die for the guide ring casting according to claim 1, wherein the guide ring casting core box die comprises a wood frame and a skin covering layer, the wood frame of the guide ring casting core box die comprises two layers of transverse supporting plates, a bottom plate and a vertical supporting plate, the two layers of transverse supporting plates, the transverse supporting plate and the bottom plate are supported and fixed through the vertical supporting plate, a plurality of rectangular plates are transversely and uniformly arranged in layers between circular inner openings of the two layers of transverse supporting plates to form an upper inner cylindrical surface, and gaps are reserved between the adjacent rectangular plates; a plurality of rectangular plates C are uniformly arranged between the circular inner opening of the middle-layer transverse supporting plate and the bottom plate to form a lower-layer inner cylindrical surface, and gaps are reserved between the adjacent rectangular plates C; the outer skin covering layer is adhered to and covers the wood frame.

3. The numerical control machining die for the guide ring casting according to claim 2, wherein the transverse supporting plate and the bottom plate are formed by splicing a plurality of formed wood plates.

4. The numerical control machining die for the guide ring casting according to any one of claims 1 to 3, wherein the outer skin covering layer comprises the following raw materials in parts by weight: 30-40 parts of industrial brine, 10-18 parts of magnesium oxide and 55-60 parts of sawdust.

5. The numerical control machining die for the guide ring casting according to claim 4, wherein the production suitable temperature of the outer skin covering layer is 0-40 ℃.

6. The numerical control machining die for the guide ring casting according to claim 4, wherein the outer skin covering layer comprises the following raw materials in parts by weight at the production temperature of 0-15 ℃: 30-40 parts of industrial brine, more than or equal to 15 parts and less than or equal to 18 parts of magnesium oxide, and more than or equal to 55 parts and less than or equal to 57 parts of sawdust.

7. The numerical control machining die for the guide ring casting according to claim 4, wherein when the production temperature is higher than 15 ℃ and lower than or equal to 40 ℃, the outer skin covering layer comprises the following raw materials in parts by weight: 30-40 parts of industrial brine, less than 15 parts of magnesium oxide with the concentration of 10-60 parts of sawdust with the concentration of 57-60 parts.

8. The manufacturing method of the numerical control machining die for the guide ring casting according to any one of claims 1 to 7 is characterized by comprising the following steps of:

1) manufacturing a wood frame according to the processed workpiece;

2) uniformly mixing the raw materials of the outer skin covering layer according to the weight parts, then covering and molding the wood frame, tamping, airing and solidifying to obtain a primary processing mold;

3) performing numerical control programming and tool path orientation positioning according to the size and precision requirements of the product, and performing finishing molding on the numerical control machine on the primary processing die obtained in the step 2);

4) the putty and the Xinna water are uniformly mixed, then uniformly and flatly coated on a mould after finishing and molding, and the nitryl varnish is sprayed after manual polishing.

9. The manufacturing method of the numerical control machining die for the guide ring casting according to claim 8, wherein the part of the product in the step 2) with the fillet of more than 15 degrees is added with fossil powder according to the proportion by combining the temperature, and the proportion of the added fossil powder is that of the raw material for the outer skin covering layer: 4-5 of talcum powder: 1.

10. the manufacturing method of the numerical control machining die for the guide ring casting according to claim 8, wherein the mixing ratio of the atomic ash to the Xinna water in the step 4) is atomic ash: benenawater 95-99: 1.

Technical Field

The invention relates to the production field of a casting die, in particular to a numerical control machining die for a guide ring casting and a manufacturing method thereof.

Background

With the continuous increase of production scale and production capacity of casting mold enterprises and the continuous improvement and innovation of production technology, the problems of high worker loss rate and failure of backup force of casting mold enterprises are increasingly highlighted, wherein how to reduce cost, improve productivity and improve product quality of casting mold enterprises becomes a focus of attention.

The traditional casting die method is characterized in that a skilled worker carries out manual drawing, manual cutting and manual assembly on a die, the production efficiency of a product is low, the production period is long, the product precision is low (the size error value is +/-2-3 mm), the outer surface of the product is rough, the surface coating treatment cannot be carried out, and the labor cost is high.

With the continuous improvement and innovation of the production technology of the casting mold, the numerical control machining process is tried and applied in the production field of the casting mold so as to achieve the aims of high yield, efficiency improvement and quality improvement of the numerical control machining casting mold.

The traditional plastic covering material has poor product strength, wear resistance, adhesion, surface gloss, non-deformability and the like, can only be suitable for manual process operation and is difficult to be applied to numerical control machine tool machining, and particularly is difficult to ensure the surface gloss of a product after numerical control machining due to insufficient local strength of a mould, so that the product quality is influenced.

Disclosure of Invention

The invention aims to provide a numerical control machining die for a guide ring casting and a manufacturing method thereof, which effectively improve the adaptability of a die covering material to production environment change, enhance the adhesion degree of the die covering material to a wood frame, improve the uniformity of coating and covering, the product forming degree and the integral strength of the die, and can be well matched with a numerical control machine to carry out fine finishing on a die product by improving the composite structure of the guide ring casting and the formula of the die covering material, thereby improving the machining precision, the quality and the yield of the guide ring casting die.

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

a numerical control machining die for a guide ring casting is divided into a guide ring casting die and a guide ring casting core box die; the guide ring casting mold comprises a wood frame and a skin covering layer, the outer cylindrical surface of a cylindrical base of the wood frame of the guide ring casting mold is formed by uniformly arranging a plurality of rectangular plates A, and gaps are reserved between the adjacent rectangular plates A; the inner cylindrical surface of the wood frame of the guide ring casting mold is formed by uniformly arranging a plurality of rectangular plates B, and gaps are reserved between the adjacent rectangular plates B; the other parts of the wood frame of the guide ring casting mold are formed by splicing a plurality of formed wood boards or wood blocks, and the outer skin covering layer is adhered to and covers the wood frame.

The guide ring casting core box mold comprises a wood frame and a sheath covering layer, wherein the wood frame of the guide ring casting core box mold comprises two layers of transverse supporting plates, a bottom plate and a vertical supporting plate, the two layers of transverse supporting plates and the bottom plate are supported and fixed through the vertical supporting plates, a plurality of rectangular plates are transversely and uniformly distributed in layers between circular inner openings of the two layers of transverse supporting plates to form an upper-layer inner cylindrical surface, and gaps are reserved between the adjacent rectangular plates; a plurality of rectangular plates C are uniformly arranged between the circular inner opening of the middle-layer transverse supporting plate and the bottom plate to form a lower-layer inner cylindrical surface, and gaps are reserved between the adjacent rectangular plates C; the outer skin covering layer is adhered to, covered and filled on the wood frame.

The transverse supporting plate and the bottom plate are formed by splicing a plurality of formed wood plates.

The outer skin covering layer comprises the following raw materials in parts by weight: 30-40 parts of industrial brine, 10-18 parts of magnesium oxide and 55-60 parts of sawdust.

The production suitable temperature of the outer skin covering layer is 0-40 ℃.

When the production temperature is 0-15 ℃, the outer skin covering layer comprises the following raw materials in parts by weight: 30-40 parts of industrial brine, more than or equal to 15 parts and less than or equal to 18 parts of magnesium oxide, and more than or equal to 55 parts and less than or equal to 57 parts of sawdust.

When the production temperature is more than 15 ℃ and less than or equal to 40 ℃, the outer skin covering layer comprises the following raw materials in parts by weight: 30-40 parts of industrial brine, less than 15 parts of magnesium oxide with the concentration of 10-60 parts of sawdust with the concentration of 57-60 parts.

A manufacturing method of a numerical control machining die for a guide ring casting comprises the following steps:

1) manufacturing a wood frame according to the processed workpiece;

2) uniformly mixing the raw materials of the outer skin covering layer according to the weight parts, then covering and molding the wood frame, tamping, airing and solidifying to obtain a primary processing mold;

3) performing numerical control programming and tool path orientation positioning according to the size and precision requirements of the product, and performing finishing molding on the numerical control machine on the primary processing die obtained in the step 2);

4) the putty and the Xinna water are uniformly mixed, then uniformly and flatly coated on a mould after finishing and molding, and the nitryl varnish is sprayed after manual polishing.

And 3) adding fossil powder into the part of the product with the fillet of more than 15 degrees in the step 2) according to the raw material formula by combining the temperature, wherein the adding proportion is that the coating layer raw material: 4-5 of talcum powder: 1.

the mixing ratio of the atomic ash and the Xinna water in the step 4) is atomic ash: benenawater 95-99: 1.

Compared with the prior art, the invention has the beneficial effects that:

the invention provides a numerical control machining die for a guide ring casting and a manufacturing method thereof, which effectively improve the adaptability of a die covering material to production environment change, enhance the adhesion degree of the die covering material to a wood frame, improve the uniformity of coating and covering, the product forming degree and the integral strength of the die, and can be well matched with a numerical control machine to carry out fine finishing on a die product by improving the composite structure of the guide ring casting and the formula of the die covering material, thereby improving the machining precision, quality and yield of the guide ring casting die.

The invention adopts the splicing of small wood strip gaps at the large-angle circular surface of the guide ring casting mold wood frame, and is matched with the newly developed covering material for use, so that the adhesive force of the external covering material to the wood frame is effectively enhanced, the cohesiveness, the product forming degree and the strength of the dried and solidified covering material are high, the tissue coated at the covering part is fine and compact, the uniformity is good, the invention is suitable for the finish machining and finishing of products by a numerical control machine tool, and particularly, after the numerical control machining is carried out on the product round corner, the product surface is smooth and fine, thereby being beneficial to the cultivation of a sand mold and improving the surface quality of a.

The guide ring casting die is finely processed by a numerical control machine tool, so that the processing precision of a product can be improved (the size error value is +/-0.5 mm); the glossiness and the fine feeling of the surface of the die are increased, and the surface coating treatment is facilitated; effectively improve production efficiency and save labor cost.

Drawings

Fig. 1 is a view of a wood frame before the outer skin of a casting mold of a guide ring is not molded;

fig. 2 is a diagram of a forming mold after a casting mold of a guide ring is molded by a skin covering layer;

fig. 3 is a view of a wood frame before the outer skin of a core box mold of a deflector ring casting is not molded;

fig. 4 is a forming die diagram of the core box die of the guide ring casting after being molded by the sheath covering layer.

In the figure: 1-outer cylindrical surface, 1-1 rectangular plate A, 2-cross runner installation position, 3-inner cylindrical surface, 3-1 rectangular plate B, 4-nozzle boss installation position, 5-upper layer transverse support plate, 6-middle layer transverse support plate, 7-bottom plate, 8-upper layer inner cylindrical surface, 8-1 rectangular plate, 9-lower layer inner cylindrical surface, 9-1 rectangular plate C, 10-gap and 11-vertical support plate.

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings:

referring to fig. 1-4, a numerically controlled machining mold for a guide ring casting is divided into a guide ring casting mold and a guide ring casting core box mold; as shown in fig. 1 and 2, the guide ring casting mold comprises a wood frame and an outer skin covering layer, wherein an outer cylindrical surface 1 of a cylindrical base of the wood frame of the guide ring casting mold is formed by uniformly arranging a plurality of rectangular plates a1-1, and a gap 10 is reserved between adjacent rectangular plates a 1-1; the inner cylindrical surface 3 of the wood frame of the guide ring casting mold is formed by uniformly arranging a plurality of rectangular plates B3-1, and a gap 10 is reserved between every two adjacent rectangular plates B3-1; the other parts of the wood frame of the guide ring casting mold are formed by splicing a plurality of formed wood boards or wood blocks, and the outer skin covering layer is adhered to and covers the wood frame.

As shown in fig. 2 and 3, the guide ring casting core box mold comprises a wood frame and a sheath covering layer, the wood frame of the guide ring casting core box mold comprises two layers of transverse supporting plates (an upper layer transverse supporting plate 5 and a middle layer transverse supporting plate 6), a bottom plate 7 and a vertical supporting plate 11, the two layers of transverse supporting plates, the transverse supporting plate and the bottom plate are supported and fixed through the vertical supporting plate 11, an upper layer inner cylindrical surface 8 is formed by horizontally and uniformly arranging a plurality of rectangular plates 8-1 in layers between two layers of circular inner openings of the transverse supports, and a gap 10 is reserved between the adjacent rectangular plates 8-1; a plurality of rectangular plates C9-1 are uniformly distributed between the circular inner opening of the middle-layer transverse support plate 6 and the bottom plate 7 to form a lower-layer inner cylindrical surface 9, and a gap 10 is reserved between the adjacent rectangular plates C9-1; the outer skin covering layer is adhered to, covered and filled on the wood frame.

The transverse supporting plates (the upper layer transverse supporting plate 5 and the middle layer transverse supporting plate 6) and the bottom plate 7 are formed by splicing a plurality of formed wood plates.

The outer skin covering layer comprises the following raw materials in parts by weight: 30-40 parts of industrial brine, 10-18 parts of magnesium oxide and 55-60 parts of sawdust.

The production suitable temperature of the outer skin covering layer is 0-40 ℃.

When the production temperature is 0-15 ℃, the outer skin covering layer comprises the following raw materials in parts by weight: 30-40 parts of industrial brine, more than or equal to 15 parts and less than or equal to 18 parts of magnesium oxide, and more than or equal to 55 parts and less than or equal to 57 parts of sawdust.

When the production temperature is more than 15 ℃ and less than or equal to 40 ℃, the outer skin covering layer comprises the following raw materials in parts by weight: 30-40 parts of industrial brine, less than 15 parts of magnesium oxide with the concentration of 10-60 parts of sawdust with the concentration of 57-60 parts.