CN208067251U - A kind of accurate positioning device and sand core and heavy castings using the device - Google Patents
A kind of accurate positioning device and sand core and heavy castings using the device Download PDFInfo
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- CN208067251U CN208067251U CN201820180539.3U CN201820180539U CN208067251U CN 208067251 U CN208067251 U CN 208067251U CN 201820180539 U CN201820180539 U CN 201820180539U CN 208067251 U CN208067251 U CN 208067251U
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- Prior art keywords
- positioning sleeve
- sand core
- locating rod
- sand
- positioning
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- 238000005266 casting Methods 0.000 title claims abstract description 11
- 239000004576 sand Substances 0.000 claims abstract description 25
- 230000007547 defect Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model discloses a kind of accurate positioning device and sand core and heavy castings using the device, including locating rod, the first positioning sleeve being embedded in sand core and the second positioning sleeve in sand mold, the locating rod, the first positioning sleeve, the second positioning sleeve central axis be located on the same line, the locating rod fixation is inserted on the second positioning sleeve in sand mold, and first positioning sleeve and sand core are moved up and down along the locating rod.The hole of sand core is made through when coremaking, during lower core, locating rod passes through the positioning sleeve in this hole and sand core and the positioning sleeve precise match in the sand mold of lower part, and then sand core is slowly fallen along locating rod, ensure that sand core will not be touched with sand mold around, eliminate the risk for burning into sand defect occur in this way.
Description
Technical field
The utility model is related to the sand cores and heavy castings of a kind of accurate positioning device and the application device.
Background technology
During casting large-scale casting, especially gas turbine component or wind power components etc., sand core weight generally 5 tons with
On, highly more than 1.5 meters, wall thickness dimension tolerance needs to control in a certain range, such as in ± 2mm.When lower core, to fixation
With positioning sand core, and wall thickness dimension is controlled, difficulty is especially big；And during lower core, sand core is easy to shake, and leads to sand core and sand
Type collides with drop, forms burning into sand defect, serious that casting is caused to scrap.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of high-precision positioner through thin and tall sand core, solutions
Certainly operating difficulties and ensure size.
In order to solve the above technical problems, the utility model discloses a kind of high accurate positioning devices, including：Locating rod, first
Positioning sleeve and the second positioning sleeve；
First positioning sleeve, for being arranged in sand core；
Second positioning sleeve, for being arranged in sand mold；
The locating rod, for being inserted into the second positioning sleeve so that the first positioning sleeve and sand core can be along above and below them
It is mobile.
Further, in use, the locating rod, the first positioning sleeve, the second positioning sleeve central axis be located at it is same
On straight line；The locating rod fixation is inserted on the second positioning sleeve in sand mold, first positioning sleeve and sand core edge
The locating rod to move up and down.
Further, the center of the sand core is equipped with the location hole above and below it, and the described first positioning is set on
The top and/or bottom of the location hole.
Or positioning sleeve is all arranged in the inner wall of the location hole.
Further, it is additionally provided with the limiting device for preventing the first positioning sleeve from falling off in the sand core bottom.
Further, its internal diameter of the location hole is gradually reduced along the direction that sand core falls, i.e., under the internal diameter of location hole
Portion is thin, above it is thick, be in inverted cone-shaped, knockout when sand core being avoided to fall.After sand core is fallen, locating rod is extracted out from positioning sleeve,
Upper sand will be filled in centre bore.
Further, the bottom of the locating rod is equipped with certain chamfering, and guiding interts in the hole of positioning sleeve.
Further, first, second positioning sleeve has certain thickness, and has certain length, and it is fixed to make
Position bar during exercise, smoothly guides.
Further, second positioning sleeve is located at the center of sand mold.
The utility model additionally provides a kind of sand core, is positioned using positioning device recited above.
The utility model additionally provides a kind of heavy castings, is made of the sand core.
The beneficial effects of the utility model are as follows：
The utility model is coordinated by locating rod and the first positioning sleeve, the second positioning sleeve, and when coremaking is made through sand core
Location hole, during lower core, it is second in the first positioning sleeve and lower part sand mold in location hole and sand core fixed that locating rod passes through
Position covers precise match, and then sand core is slowly fallen along locating rod, ensures that sand core will not be touched with sand mold around in this way, eliminates out
The risk of existing burning into sand defect.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the improper restriction to the application for explaining the application.
Fig. 1 is the utility model high accuracy positioning structural schematic diagram.
In figure：1-1 is the first positioning sleeve, 1-2 is that the second positioning sleeve 2 is locating rod.
Specific implementation mode
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
Term explains part:" top and/or bottom " described in the utility model refers to that the first positioning is set on institute
Stating the top of location hole, either bottom or the first positioning are set on the top and bottom of the location hole.
As background technology is introduced, when lower core exists in the prior art, to fixed and positioning sand core, and wall is controlled
Thick size, difficulty are especially big；And during lower core, sand core is easy to shake, and causes sand core and sand mold to collide with drop, forms burning into sand
Defect, it is serious that casting is caused to scrap, in order to solve technical problem as above, present applicant proposes a kind of accurate positioning device and
Using the sand core and casting of the device.
Embodiment 1
The high accurate positioning device of the utility model, including locating rod 2, the first positioning sleeve 1- for being embedded in sand core accurate location
1 and the second positioning sleeve 1-2 in sand mold, the locating rod 2, the first positioning sleeve 1-1, the second positioning sleeve 1-2 center
Axis is located on the same line；The locating rod fixation is inserted on the second positioning sleeve in sand mold, and described first is fixed
Position set and sand core are moved up and down along the locating rod.
As a preferred solution, the material of locating rod and the first positioning sleeve, the second positioning sleeve can select steel
Material.
When coremaking, the location hole of sand core is arranged through in the center of sand core, during lower core, locating rod passes through this hole
With the first positioning sleeve 1-1 in sand core and the second positioning sleeve 1-2 precise match in the sand mold of lower part, then sand core is along fixed
Position bar 2 is slowly fallen, and is ensured that sand core will not be touched with sand mold around in this way, is eliminated the risk for burning into sand defect occur.
As a preferred embodiment, its internal diameter of location hole 2 is gradually reduced along the direction that sand core falls, i.e. location hole 2
Internal diameter lower part is thin, thick above, is in inverted cone-shaped, knockout when sand core being avoided to fall.After sand core is fallen, by locating rod 2 from positioning sleeve
Middle extraction will fill upper sand in centre bore.
As a preferred solution, the bottom chamfer of locating rod 2, guiding intert in the hole of the first positioning sleeve.
As a preferred solution, the first positioning sleeve 1-1, the second positioning sleeve 1-2 have certain thickness, and have one
Fixed length can make locating rod during exercise, smoothly guide.
As a preferred solution, the first outsides positioning sleeve 1-1 of sand core bottom are equipped with limiting device, such as limit
Device can be provided in the protrusion on the first positioning sleeve, avoid falling off out of sand core.
As a preferred solution, the first positioning sleeve 1-1 is located at the center of sand core, and the second positioning sleeve 1-2 is located at
The center of sand mold, to the status requirement not necessarily must stringent center, but deviation cannot be excessive, otherwise sand core
It is unstable in dropping process.
As a preferred solution, the gap of locating rod and the first positioning sleeve, the second positioning sleeve is less than desired wall thickness
The half of tolerance value.For example, can control in 1mm, ensure that sand core deviation within 1mm, meets blank dimension tolerance (± 2mm)
Requirement.
Embodiment 2
In the present embodiment, the inner wall of the location hole of sand core is all set to positioning sleeve, and positioning sleeve runs through in the axial direction
Entire location hole, remaining is same as Example 1.
Embodiment 3
In the present embodiment, positioning sleeve also is provided at the top of the location hole of sand core, further reinforces locating rod, remaining with
Embodiment 1 is identical.
The utility model is coordinated by locating rod and positioning sleeve, and it is public that the gap of locating rod and positioning sleeve is less than desired wall thickness
The half of difference.For example, can control in 1mm, ensure that sand core deviation within 1mm, meets blank dimension tolerance (± 2mm)
It is required that.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of accurate positioning device, which is characterized in that including：Locating rod, the first positioning sleeve and the second positioning sleeve；
First positioning sleeve, for being arranged in sand core；
Second positioning sleeve, for being arranged in sand mold；
The locating rod, for being inserted into the second positioning sleeve so that the first positioning sleeve and sand core can be moved up and down along it.
2. a kind of accurate positioning device as described in claim 1, which is characterized in that the locating rod, the first positioning sleeve, second
The central axis of positioning sleeve is located on the same line.
3. a kind of accurate positioning device as described in claim 1, which is characterized in that the center of the sand core is equipped with through thereon
Under location hole, the described first positioning is set on top and/or the inner wall of bottom or the location hole of the location hole
All the first positioning sleeves of setting.
4. a kind of accurate positioning device as claimed in claim 3, which is characterized in that its internal diameter of the location hole is along under sand core
The direction fallen is gradually reduced.
5. a kind of accurate positioning device as described in claim 1, which is characterized in that being additionally provided in the sand core bottom prevents
The limiting device that first positioning sleeve falls off.
6. a kind of accurate positioning device as described in claim 1, which is characterized in that the bottom of the locating rod is equipped with certain
Chamfering, guiding intert in the hole of positioning sleeve.
7. a kind of accurate positioning device as described in claim 1, which is characterized in that the locating rod and the first positioning sleeve, the
The gap of two positioning sleeves is less than the half of desired wall thickness tolerance value.
8. a kind of accurate positioning device as described in claim 1, which is characterized in that second positioning sleeve is located at sand mold
Center.
9. a kind of sand core, which is characterized in that positioned using any positioning devices of claim 1-7.
10. a kind of heavy castings, which is characterized in that made of the sand core described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820180539.3U CN208067251U (en) | 2018-02-01 | 2018-02-01 | A kind of accurate positioning device and sand core and heavy castings using the device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820180539.3U CN208067251U (en) | 2018-02-01 | 2018-02-01 | A kind of accurate positioning device and sand core and heavy castings using the device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208067251U true CN208067251U (en) | 2018-11-09 |
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ID=64037012
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820180539.3U Active CN208067251U (en) | 2018-02-01 | 2018-02-01 | A kind of accurate positioning device and sand core and heavy castings using the device |
Country Status (1)
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| CN (1) | CN208067251U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756558A (en) * | 2020-12-18 | 2021-05-07 | 共赢装备制造有限公司 | Novel resin sand core positioning method |
| CN114273613A (en) * | 2022-01-04 | 2022-04-05 | 共享装备股份有限公司 | Flexible positioning device for core setting of large sand core and sand core applying same |
-
2018
- 2018-02-01 CN CN201820180539.3U patent/CN208067251U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756558A (en) * | 2020-12-18 | 2021-05-07 | 共赢装备制造有限公司 | Novel resin sand core positioning method |
| CN114273613A (en) * | 2022-01-04 | 2022-04-05 | 共享装备股份有限公司 | Flexible positioning device for core setting of large sand core and sand core applying same |
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