CN114406204B - Casting method and system of heavy hammer for machine tool - Google Patents
Casting method and system of heavy hammer for machine tool Download PDFInfo
- Publication number
- CN114406204B CN114406204B CN202210091585.7A CN202210091585A CN114406204B CN 114406204 B CN114406204 B CN 114406204B CN 202210091585 A CN202210091585 A CN 202210091585A CN 114406204 B CN114406204 B CN 114406204B
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- Prior art keywords
- ribs
- fixing frame
- fixing
- pig iron
- cavity
- Prior art date
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Links
- 238000005266 casting Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910000805 Pig iron Inorganic materials 0.000 claims abstract description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000004576 sand Substances 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 229910052742 iron Inorganic materials 0.000 claims abstract description 12
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910000640 Fe alloy Inorganic materials 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 6
- 230000007547 defect Effects 0.000 abstract description 7
- 238000005245 sintering Methods 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 229910001060 Gray iron Inorganic materials 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
A casting method and a casting system of a heavy hammer for a machine tool relate to the technical field of machine tool casting and are used for solving the technical problems of shrinkage cavity and sintering defects in the prior art. The casting method of the heavy hammer for the machine tool comprises the following steps: a fixing frame is arranged in the left cavity and the right cavity, and the fixing frame consists of an anti-collision table, a bracket and fixing ribs; pig iron is placed below the fixing ribs; placing chrome ore sand at the lifting hole through a steel pipe to serve as an integral sand core; a 5mm gap is reserved between the upper part of the fixing frame and the inner cavity so as to ensure that the fixing frame is kept stable in the up-down direction; the top of the anti-collision table is attached to the sand mold, so that the sand mold is prevented from being damaged; and finally, the fixing frame and the pig iron are melted by molten iron and are fused with the molten iron into a whole.
Description
Technical Field
The invention relates to the technical field of machine tool casting, in particular to a casting method and system of a heavy hammer for a machine tool.
Background
Defects generated in the solidification process of gray cast iron are mainly caused by liquid cooling shrinkage, are mainly influenced by cooling speed and chemical components related to casting structure, pouring temperature, casting mold conditions and alloy components, and can cause volume expansion due to graphite precipitation and volume shrinkage due to austenite precipitation during solidification and transformation in the solidification process of gray cast iron, so that casting defects such as shrinkage cavity, shrinkage porosity, looseness and the like of the casting are caused. Among them, the loosening is caused by the coarse graphite structure, the surface finish after processing is poor, there are dark spots, the main reason is that the carbon content in the component is too high, or the thick and large part is cooled too slowly.
Specifically, in the prior art, the weight of the main spindle box is 7000kg to 30000kg, the wall thickness is 900mm to 1400mm, and the main spindle box is a solid block in the middle, and shrinkage cavities and sintering defects exist at the positions of the guide groove 41 and the positioning table 42 due to the thicker wall thickness, as shown in fig. 4.
Disclosure of Invention
The invention aims to provide a casting method and a casting system of a heavy hammer for a machine tool, which are used for solving the technical problems of shrinkage cavity and sintering defects in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a casting method of a heavy hammer for a machine tool comprises the following steps:
a fixing frame is arranged in the left cavity and the right cavity, and the fixing frame consists of an anti-collision table, a bracket and fixing ribs;
pig iron is placed below the fixing ribs;
placing chrome ore sand at the lifting hole through a steel pipe to serve as an integral sand core;
a 5mm gap is reserved between the upper part of the fixing frame and the inner cavity so as to ensure that the fixing frame is kept stable in the up-down direction;
the top of the anti-collision table is attached to the sand mold, so that the sand mold is prevented from being damaged;
and finally, the fixing frame and the pig iron are melted by molten iron and are fused with the molten iron into a whole.
Wherein, the anticollision platform adopts cuboid structure platform.
Wherein, the support adopts the stand structure.
Specifically, the fixing rib comprises a plurality of first ribs distributed along the longitudinal direction and a plurality of second ribs distributed along the transverse direction.
Further, the first ribs and the second ribs in the same-side cavity are distributed in a grid mode.
Further, the pig iron comprises a plurality of pig iron blocks distributed in a matrix.
A casting system for a weight for a machine tool, comprising: the fixing frames are arranged in the left cavity and the right cavity, are composed of an anti-collision table, a bracket and fixing ribs and are made of iron alloy; pig iron is placed below the fixing ribs, and chrome ore sand is placed at the lifting holes through steel pipes to serve as an integral sand core; in addition, a 5mm gap is reserved between the upper part of the fixing frame and the inner cavity, so that the fixing frame is ensured to be stable in the up-down direction.
During practical application, the top of support with anticollision platform is connected, the bottom lateral wall of support with the fixed muscle is connected.
During production, the support, the anti-collision table and the fixing ribs are fixed in a welding mode.
Wherein, the anti-collision table adopts a cuboid structure table; the support adopts a column structure.
Specifically, the fixing rib comprises a plurality of first ribs distributed along the longitudinal direction and a plurality of second ribs distributed along the transverse direction; and the first ribs and the second ribs in the same-side cavity are distributed in a grid mode.
Further, the pig iron comprises a plurality of pig iron blocks distributed in a matrix.
Furthermore, the steel pipe adopts a circular pipe structure.
When in practical application, the casting system of the heavy hammer for the machine tool further comprises: the bearing net rack is made of iron alloy and used for placing pig iron.
Wherein, bear the weight of the rack and include: a carrier web, and legs connected to the carrier web.
Specifically, the bearing net and the supporting legs are fixed in a welding mode.
Compared with the prior art, the casting method and the casting system of the heavy hammer for the machine tool have the following advantages:
in the casting method and the casting system of the heavy hammer for the machine tool, the fixing frame is arranged in the left cavity and the right cavity, and the fixing frame consists of the anti-collision table, the bracket and the fixing ribs and is made of iron alloy; pig iron is placed below the fixing ribs; placing chrome ore sand at the lifting hole through a steel pipe to serve as an integral sand core; a 5mm gap is reserved between the upper part of the fixing frame and the inner cavity so as to ensure that the fixing frame is kept stable in the up-down direction; the top of the anti-collision table is attached to the sand mold, so that the sand mold is prevented from being damaged; finally, the fixing frame and the pig iron are melted by molten iron and fused with the molten iron into a whole, so that the cooling effect is enhanced by the molten cooling mode of the pig iron, the fixing frame, the steel pipe and the chrome ore sand, the internal cooling speed is effectively improved, the cooling effect is good, shrinkage cavity and sintering defects are further improved, the product quality and the casting yield are improved, and the cost is saved.
Drawings
FIG. 1 is a schematic flow chart of a method for casting a weight for a machine tool according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a fixing frame in a casting system of a weight for a machine tool according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a casting system of a weight for a machine tool according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a weight according to the prior art.
Reference numerals:
1-a fixing frame; 11-an anti-collision table; 12-a bracket; 13-fixing ribs; 131-first ribs; 132-second ribs; 2-pig iron; 3-an integral sand core;
41-a guide groove; 42-positioning table.
Detailed Description
In order to facilitate understanding, the following describes in detail the method and system for casting a weight for a machine tool according to the embodiments of the present invention with reference to the drawings.
The embodiment of the invention provides a casting method of a heavy hammer for a machine tool, as shown in fig. 1, comprising the following steps:
s1, placing a fixing frame in a left cavity and a right cavity, wherein the fixing frame consists of an anti-collision table, a bracket and fixing ribs;
s2, placing pig iron 2 below the fixing bars;
s3, placing chrome ore sand at the lifting hole through a steel pipe to serve as an integral sand core 3;
s4, a 5mm gap is reserved between the upper part of the fixing frame and the inner cavity so as to ensure that the fixing frame is kept stable in the up-down direction;
s5, avoiding damaging the sand mould when the top of the anti-collision table is attached to the sand mould;
and S6, melting the final fixing frame and pig iron by molten iron and fusing the final fixing frame and the pig iron into a whole.
Wherein, the anti-collision table can adopt a cuboid structure table.
Wherein, the support can adopt a column structure.
Specifically, the fixing rib may include a plurality of first ribs distributed in a longitudinal direction and a plurality of second ribs distributed in a transverse direction.
Further, the first ribs and the second ribs in the same-side cavity can be distributed in a grid mode.
Further, the pig iron may include a plurality of pig iron blocks distributed in a matrix.
The embodiment of the invention further provides a casting system of the heavy hammer for the machine tool, as shown in fig. 2, comprising: the fixing frame 1 is arranged in the left cavity and the right cavity, and the fixing frame 1 is composed of an anti-collision table 11, a bracket 12 and fixing ribs 13 and is made of iron alloy; pig iron 2 is placed below the fixing ribs 13, and chrome ore sand is placed at the lifting holes through steel pipes to serve as an integral sand core 3; in addition, a 5mm gap is reserved between the upper part of the fixing frame 1 and the inner cavity, so that the fixing frame 1 is ensured to be stable in the up-down direction.
In practical application, as shown in fig. 2, the top end of the bracket 12 is connected with the anti-collision table 11, and the bottom end side wall of the bracket 12 is connected with the fixing rib 13; in addition, during production, the bracket 12, the anti-collision table 11 and the fixing ribs 13 can be fixed in a welding mode, so that production and production are facilitated, and the fixing frame 1 and pig iron are melted together and fused together with molten iron.
As shown in fig. 2, the anti-collision table 11 may be a rectangular parallelepiped table; the bracket 12 may be in a column structure.
Specifically, as shown in fig. 2, the fixing rib 13 may include a plurality of first ribs 131 distributed in a longitudinal direction and a plurality of second ribs 132 distributed in a transverse direction; the first ribs 131 and the second ribs 132 in the same-side cavity may preferably be distributed in a grid.
Further, the pig iron 2 may include a plurality of pig iron blocks distributed in a matrix.
Further, the steel pipe may have a circular pipe structure in which chromite sand is placed as the integral sand core 3.
In practical application, the casting system of the heavy hammer for the machine tool provided by the embodiment of the invention can further comprise: the bearing net frame can be made of iron alloy and used for placing and supporting the pig iron.
Wherein, above-mentioned bear rack can include: the pig iron support comprises a bearing net and supporting legs connected with the bearing net, wherein the supporting legs are used for supporting the bearing net, and the bearing net is used for placing pig iron.
Specifically, the carrying net and the supporting legs can be fixed in a welding mode.
Compared with the prior art, the casting method and the casting system for the heavy hammer for the machine tool have the following advantages:
in the casting method and the casting system of the heavy hammer for the machine tool, the fixing frame 1 is arranged in the left cavity and the right cavity, and the fixing frame 1 is composed of the anti-collision table 11, the bracket 12 and the fixing ribs 13 and is made of iron alloy; pig iron is placed below the fixing bars 13; placing chrome ore sand at the lifting hole through a steel pipe to serve as an integral sand core; a 5mm gap is reserved between the upper part of the fixing frame 1 and the inner cavity so as to ensure that the fixing frame 1 keeps stable in the up-down direction; the top of the anti-collision table 11 is attached to the sand mold, so that the sand mold is prevented from being damaged; finally, the fixing frame 1 and pig iron are melted by molten iron and fused with molten iron into a whole, so that the cooling effect is enhanced by the molten cooling mode of the pig iron, the fixing frame 1, the steel pipe and the chrome ore sand, the internal cooling speed is effectively improved, the cooling effect is good, shrinkage cavity and sintering defects are further improved, the product quality and the casting yield are improved, and the cost is saved.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (2)
1. The casting method of the heavy hammer for the machine tool is characterized by comprising the following steps of:
a fixing frame is arranged in the left cavity and the right cavity, and the fixing frame consists of an anti-collision table, a bracket and fixing ribs;
pig iron is placed below the fixing ribs;
placing chrome ore sand at the lifting hole through a steel pipe to serve as an integral sand core;
a 5mm gap is reserved between the upper part of the fixing frame and the inner cavity so as to ensure that the fixing frame is kept stable in the up-down direction;
the top of the anti-collision table is attached to the sand mold, so that the sand mold is prevented from being damaged;
finally, the fixing frame and the pig iron are melted by molten iron and are fused with the molten iron into a whole;
wherein, the anti-collision table adopts a cuboid structure table; the bracket adopts a column structure; the fixing ribs comprise a plurality of first ribs distributed along the longitudinal direction and a plurality of second ribs distributed along the transverse direction; the first ribs and the second ribs in the cavity on the same side are distributed in a grid mode; the pig iron comprises a plurality of pig iron blocks distributed in a matrix.
2. A casting system using the weight for machine tool according to claim 1, comprising: the fixing frames are arranged in the left cavity and the right cavity, are composed of an anti-collision table, a bracket and fixing ribs and are made of iron alloy; pig iron is placed below the fixing ribs, and chrome ore sand is placed at the lifting holes through steel pipes to serve as an integral sand core; in addition, a 5mm gap is reserved between the upper part of the fixing frame and the inner cavity so as to ensure that the fixing frame is kept stable in the up-down direction;
specifically, the anti-collision table adopts a cuboid structure table; the bracket adopts a column structure; the fixing ribs comprise a plurality of first ribs distributed along the longitudinal direction and a plurality of second ribs distributed along the transverse direction; the first ribs and the second ribs in the cavity on the same side are distributed in a grid mode; the pig iron comprises a plurality of pig iron blocks distributed in a matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210091585.7A CN114406204B (en) | 2022-01-26 | 2022-01-26 | Casting method and system of heavy hammer for machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210091585.7A CN114406204B (en) | 2022-01-26 | 2022-01-26 | Casting method and system of heavy hammer for machine tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114406204A CN114406204A (en) | 2022-04-29 |
| CN114406204B true CN114406204B (en) | 2023-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210091585.7A Active CN114406204B (en) | 2022-01-26 | 2022-01-26 | Casting method and system of heavy hammer for machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114406204B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205869386U (en) * | 2016-08-16 | 2017-01-11 | 安徽合力股份有限公司合肥铸锻厂 | A densener support for casting process |
| CN106825407A (en) * | 2016-12-22 | 2017-06-13 | 常州中车汽车零部件有限公司 | A kind of sand mold manufactures component and casting method |
| CN107661967A (en) * | 2017-11-25 | 2018-02-06 | 山西江淮重工有限责任公司 | Aluminium copper structural member casting internal densener structure and its laying method |
| CN108127097A (en) * | 2018-01-13 | 2018-06-08 | 合肥市瑞宏重型机械有限公司 | A kind of pedestal internal densener device |
-
2022
- 2022-01-26 CN CN202210091585.7A patent/CN114406204B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205869386U (en) * | 2016-08-16 | 2017-01-11 | 安徽合力股份有限公司合肥铸锻厂 | A densener support for casting process |
| CN106825407A (en) * | 2016-12-22 | 2017-06-13 | 常州中车汽车零部件有限公司 | A kind of sand mold manufactures component and casting method |
| CN107661967A (en) * | 2017-11-25 | 2018-02-06 | 山西江淮重工有限责任公司 | Aluminium copper structural member casting internal densener structure and its laying method |
| CN108127097A (en) * | 2018-01-13 | 2018-06-08 | 合肥市瑞宏重型机械有限公司 | A kind of pedestal internal densener device |
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| Publication number | Publication date |
|---|---|
| CN114406204A (en) | 2022-04-29 |
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