CN107150107B - Lathe bed type casting technology and core structure thereof - Google Patents
Lathe bed type casting technology and core structure thereof Download PDFInfo
- Publication number
- CN107150107B CN107150107B CN201710521919.9A CN201710521919A CN107150107B CN 107150107 B CN107150107 B CN 107150107B CN 201710521919 A CN201710521919 A CN 201710521919A CN 107150107 B CN107150107 B CN 107150107B
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- core
- casting
- processed
- cavity
- outer cavity
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- 238000005266 casting Methods 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 244000035744 Hura crepitans Species 0.000 description 4
- 101150054854 POU1F1 gene Proteins 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- 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
- B22C9/103—Multipart cores
-
- 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
- B22C9/108—Installation of cores
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention provides a core structure for casting lathe bed castings, which comprises an inner cavity core and an outer cavity core, wherein the inner cavity core is matched with the shape of the inner wall of a casting to be processed, the upper part of the outer cavity core is matched with the shape of the outer wall above the foundation pit of the casting to be processed, a lug in the middle of the outer cavity core is matched with a concave cavity at the foundation pit of the casting to be processed, and the lower part of the outer cavity core is matched with the shape of the bottom plate of the casting to be processed. The beneficial effects of the invention are as follows: the peripheral core and the foundation pit core are integrated into the outer cavity core, and when the outer cavity core is arranged, the inner cavity core is arranged firstly, and then the outer cavity core is arranged, so that the technical bias of the lathe bed casting when the foundation pit is arranged is overcome, the formed casting is apparent and has no skin seam, the size is accurate, no core support is needed, and the working efficiency is high.
Description
Technical Field
The invention relates to a lathe bed casting process and a core structure thereof, and belongs to the field of casting.
Technical Field
In order to ensure the stability of the machine tool, the contact area between the bottom edge of the machine tool and the ground is enlarged, the bottom edge of the machine tool is extended outwards to form a part of concave cavity between the bottom edge and the machine tool body, and the concave cavity is called a foot pit. In the conventional lathe bed casting process, the peripheral foundation pit of the lathe bed casting generally needs an extra lower foundation pit core. In the casting process of the casting shown in fig. 1 and 2, the sandbox needs to be placed upside down, the fixing piece of the peripheral core is placed at the bottom of the sand box after the sandbox is placed upside down, then the peripheral core is placed and fixed, the inner cavity core is placed after the peripheral core is placed down, finally the foundation pit core is placed, and the sandbox is turned upside down after the core is placed down. If the peripheral core is lowered, the lower foot pit core is lowered, and then the lower inner cavity core is lowered, the protruding part of the foot pit core can obstruct the inner cavity core, so that the inner cavity core cannot enter a preset position. In the process of pouring molten iron, as the gap is formed between the peripheral core and the foundation pit core, molten iron can be blocked at the joint of the two cores and enter the gap to form a skin gap, so that the appearance is poor, the size is inaccurate, and the chaplet is easy to fall off, thereby causing the defect of a machined surface.
Disclosure of Invention
According to the defects existing in the prior art, the invention provides a core structure for casting a lathe bed type casting, which integrates a peripheral core and a foundation pit core into a whole to form an outer cavity core.
The technical scheme of the invention is as follows: the utility model provides a lathe bed class foundry goods core structure for casting, includes inner chamber core and outer chamber core, the inner chamber core cooperatees with waiting to process foundry goods inner wall shape, outer chamber core upper portion cooperatees with the outer wall shape of waiting to process foundry goods rag nest top, and outer chamber core middle part lug cooperatees with the cavity of waiting to process foundry goods rag nest department, and outer chamber core bottom cooperatees with the bottom plate shape of waiting to process foundry goods.
Further, the core structure still includes lower part chamber core, the core structure is used for the square lathe foundry goods of both sides area ground nest, and both sides set up a plurality of outer chamber core respectively, and the middle part sets up an inner chamber core, the inner chamber core divide into upper portion and lower part, outer chamber core upper portion and inner chamber core upper portion form the die cavity structure more than the ground nest of processing foundry goods, outer chamber core middle part lug and inner chamber core lower part cavity form the die cavity structure of waiting to process foundry goods ground nest department, outer chamber core lower part and lower part cavity core form the die cavity structure of waiting to process foundry goods bottom plate.
Further, a plurality of outer cavity cores at one side of the casting are spliced into an integral structure, and the length of the integral structure is equal to that of the machine tool casting.
Further, the number of the outer cavity cores on one side of the casting is equal to and corresponds to the number of the outer cavity cores on the other side of the casting one by one.
Further, the cross section of the convex block at the middle part of the outer cavity core is U-shaped.
Further, the cross section of the convex block at the middle part of the outer cavity core is V-shaped.
Further, the lathe bed casting process comprises the following steps:
step 1, manufacturing a sand core: manufacturing an inner cavity core matched with the shape of the inner wall of the casting to be processed, and then manufacturing an outer cavity core matched with the shape of the outer wall of the casting to be processed, wherein the upper part of the outer cavity core is matched with the shape of the outer wall above the foundation pit of the casting to be processed, the convex block in the middle of the outer cavity core is matched with the concave cavity at the foundation pit of the casting to be processed, and the lower part of the outer cavity core is matched with the shape of the bottom plate of the casting to be processed;
step 2, core setting: firstly, the inner cavity core is arranged down, and then the outer cavity core is arranged down;
and 3, pouring molten iron.
The beneficial effects of the invention are as follows: the peripheral core and the foundation pit core are integrated into the outer cavity core, and when the outer cavity core is arranged, the inner cavity core is arranged firstly, and then the outer cavity core is arranged, so that the technical bias of the lathe bed casting when the foundation pit is arranged is overcome, the formed casting is apparent and has no skin seam, the size is accurate, no core support is needed, and the working efficiency is high.
Drawings
Figure 1 is a schematic view of a machine tool casting ground socket,
figure 2 is a schematic diagram of the core structure at the U-shaped foundation pit in the original process,
figure 3 is a schematic view of the core structure at the V-shaped foot well in the original process,
figure 4 is a schematic diagram of the core structure at the U-shaped foot pit in the technical proposal after transformation,
figure 5 is a schematic diagram of the core structure at the V-shaped foot pit in the modified technical proposal,
figure 6 shows a square machine tool casting with foot sockets on both sides,
in the figure: 1. the outer cavity comprises a ground pit, an inner cavity core, a peripheral core, a ground pit core and an outer cavity core.
Detailed Description
Example 1
The embodiment is further described according to fig. 1-5, and the core structure at the foot pit of the lathe bed casting comprises an inner cavity core 2 and an outer cavity core 5, wherein the inner cavity core 2 is matched with the shape of the inner wall of the casting to be processed, the upper part of the outer cavity core 5 is matched with the shape of the outer wall above the foot pit 1 of the casting to be processed, a lug in the middle of the outer cavity core 5 is matched with a concave cavity of the foot pit 1 of the casting to be processed, and the lower part of the outer cavity core 5 is matched with the shape of the bottom plate of the casting to be processed. After the core is manufactured, preparing to lower the core, firstly, lower the inner cavity core 2, then lower the outer cavity core 5, and finally pouring to form a casting.
Example 2
The invention is further described according to the accompanying drawings 1-6, a square machine tool casting with foot pits on two sides is provided with a plurality of outer cavity cores 5 on two sides, an inner cavity core 2 is arranged in the middle, the outer cavity cores 5 are divided into an upper part, a middle part and a lower part, the inner cavity cores 2 are divided into an upper part and a lower part, the upper part of the outer cavity cores 5 and the upper part of the inner cavity cores 2 form a cavity structure above the foot pit 1 of the casting to be processed, a lug in the middle of the outer cavity cores 5 and a cavity at the lower part of the inner cavity cores 2 form a cavity structure at the foot pit 1 of the casting to be processed, and the lower part of the outer cavity cores 5 and the lower cavity cores form a cavity structure of a bottom plate of the casting to be processed. The outer cavity cores 5 on one side of the casting are spliced into an integral structure, and the length of the integral structure is equal to that of the machine tool casting. The number of the outer cavity cores 5 on one side of the casting is equal to the number of the outer cavity cores on the other side and corresponds to one another. After the core is manufactured, preparing to lower the core, firstly, putting the next inner cavity core 2, then putting a plurality of outer cavity cores 5, and finally pouring to form a casting.
Claims (1)
1. The casting process of the lathe bed type casting is characterized in that a core structure adopted by the casting process comprises an inner cavity core and an outer cavity core, wherein the inner cavity core is matched with the shape of the inner wall of the casting to be processed, the upper part of the outer cavity core is matched with the shape of the outer wall above the foundation pit of the casting to be processed, a lug in the middle of the outer cavity core is matched with a concave cavity at the foundation pit of the casting to be processed, and the lower part of the outer cavity core is matched with the shape of the bottom plate of the casting to be processed;
the core structure is used for square machine tool castings with foot pits on two sides, a plurality of outer cavity cores are respectively arranged on two sides, an inner cavity core is arranged in the middle, the outer cavity cores are divided into an upper part, a middle part and a lower part, and the inner cavity cores are divided into an upper part and a lower part; the upper part of the outer cavity core and the upper part of the inner cavity core form a cavity structure above the ground pit of the casting to be processed, the middle lug of the outer cavity core and the concave cavity at the lower part of the inner cavity core form a cavity structure at the ground pit of the casting to be processed, and the lower part of the outer cavity core and the lower cavity core form a cavity structure of the bottom plate of the casting to be processed;
the outer cavity cores at one side of the casting are spliced into an integral structure, and the length of the integral structure is equal to that of the machine tool casting;
the number of the outer cavity cores on one side of the casting is equal to and corresponds to the number of the outer cavity cores on the other side of the casting one by one;
the cross section of the lug at the middle part of the outer cavity core is U-shaped or V-shaped;
the method comprises the following steps:
step 1, manufacturing a sand core: manufacturing an inner cavity core matched with the shape of the inner wall of the casting to be processed, and then manufacturing an outer cavity core matched with the shape of the outer wall of the casting to be processed, wherein the upper part of the outer cavity core is matched with the shape of the outer wall above the foundation pit of the casting to be processed, the convex block in the middle of the outer cavity core is matched with the concave cavity at the foundation pit of the casting to be processed, and the lower part of the outer cavity core is matched with the shape of the bottom plate of the casting to be processed; step 2, core setting: firstly, the inner cavity core is arranged down, and then the outer cavity core is arranged down; and 3, pouring molten iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710521919.9A CN107150107B (en) | 2017-06-30 | 2017-06-30 | Lathe bed type casting technology and core structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710521919.9A CN107150107B (en) | 2017-06-30 | 2017-06-30 | Lathe bed type casting technology and core structure thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107150107A CN107150107A (en) | 2017-09-12 |
| CN107150107B true CN107150107B (en) | 2024-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710521919.9A Active CN107150107B (en) | 2017-06-30 | 2017-06-30 | Lathe bed type casting technology and core structure thereof |
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| CN (1) | CN107150107B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109047672A (en) * | 2018-09-29 | 2018-12-21 | 大连金河铸造有限公司 | A kind of platen lead screw base cast casting technique |
| CN110102716B (en) * | 2019-05-30 | 2020-12-18 | 大连金河铸造有限公司 | Casting process of saddle casting |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0257425A2 (en) * | 1986-08-19 | 1988-03-02 | Metal Castings (Worcester) Limited | Casting |
| JP2006043824A (en) * | 2004-08-05 | 2006-02-16 | Okamoto Machine Tool Works Ltd | Machine frame of machine tool made of metal and its casting method |
| CN101439398A (en) * | 2008-12-26 | 2009-05-27 | 宁夏共享集团有限责任公司 | Method for casting ultralong, large-sized machine tool casting parts |
| CN201906793U (en) * | 2010-12-27 | 2011-07-27 | 自贡长征精密铸锻有限公司 | Casting core for motor mounting boss positions of chip removal grooves of numerical-controlled machine tool bodies |
| CN203018687U (en) * | 2012-12-18 | 2013-06-26 | 杭州杭氧铸造有限公司 | Casting core assembly of compressor shell |
| CN205914708U (en) * | 2016-08-24 | 2017-02-01 | 宁夏朗盛精密制造技术有限公司 | Real mold core of whole of examining function in coaxial school has during mould assembling |
| CN206925286U (en) * | 2017-06-30 | 2018-01-26 | 大连金河铸造有限公司 | A kind of lathe bed class cast casting core structure |
-
2017
- 2017-06-30 CN CN201710521919.9A patent/CN107150107B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0257425A2 (en) * | 1986-08-19 | 1988-03-02 | Metal Castings (Worcester) Limited | Casting |
| JP2006043824A (en) * | 2004-08-05 | 2006-02-16 | Okamoto Machine Tool Works Ltd | Machine frame of machine tool made of metal and its casting method |
| CN101439398A (en) * | 2008-12-26 | 2009-05-27 | 宁夏共享集团有限责任公司 | Method for casting ultralong, large-sized machine tool casting parts |
| CN201906793U (en) * | 2010-12-27 | 2011-07-27 | 自贡长征精密铸锻有限公司 | Casting core for motor mounting boss positions of chip removal grooves of numerical-controlled machine tool bodies |
| CN203018687U (en) * | 2012-12-18 | 2013-06-26 | 杭州杭氧铸造有限公司 | Casting core assembly of compressor shell |
| CN205914708U (en) * | 2016-08-24 | 2017-02-01 | 宁夏朗盛精密制造技术有限公司 | Real mold core of whole of examining function in coaxial school has during mould assembling |
| CN206925286U (en) * | 2017-06-30 | 2018-01-26 | 大连金河铸造有限公司 | A kind of lathe bed class cast casting core structure |
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| Publication number | Publication date |
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| CN107150107A (en) | 2017-09-12 |
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