CN107282893B - A kind of fixing tool of cantilever castingin oil pipe in sand core - Google Patents
A kind of fixing tool of cantilever castingin oil pipe in sand core Download PDFInfo
- Publication number
- CN107282893B CN107282893B CN201710627527.0A CN201710627527A CN107282893B CN 107282893 B CN107282893 B CN 107282893B CN 201710627527 A CN201710627527 A CN 201710627527A CN 107282893 B CN107282893 B CN 107282893B
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- CN
- China
- Prior art keywords
- oil pipe
- cantilever
- fixed
- hole
- tapped
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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
- B22C9/108—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
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
Abstract
A kind of fixing tool of cantilever castingin oil pipe in sand core, including positioning device and fixed device.Using the fixing tool relatively before oil pipe fixing means biggest advantage be not need to destroy vitta structure, the risk for effectively preventing its possible Tubing failure, oil pipe presentation quality difference avoids the problem of subsequent needs processing is with processing difficulties that may be present.And largely simplify operating procedure, improve fixed reliability, the fixed intensity of oil pipe and accuracy have extraordinary guarantee.It especially solves the problems, such as the rotational positioning of cantilever oil pipe, makes its will not shake in semi-finished product and casting displacement or floating.And due to the special designing of such method limit aspect fixed for oil pipe, thoroughly solves the problems such as scrapping due to the partially caused casting of the fixed bad bring oil pipe of oil pipe.
Description
Technical field
Fixing tool field the present invention relates to casting with castingin part in sand core, and in particular to one kind is used for sand casting
In fixing tool of the cantilever castingin metal oil conduit in sand core.
Background technique
In engine and generating equipment cast product, there is the oil pipe for being used for delivering oil mostly, for such oil pipe,
Customer often require that using cast steel or other be different from the metal of castings material, so oil need to be formed using castingin metal oil conduit
The problem of pipe, this there is castingin metal oil conduit and sand mold or sand core relative positioning, and then guarantee the standard of oil pipe position in casting
Really.
In the fixation of such steel-pipes-embedded easting, first oil pipe is fixed in sand core mostly, then after sand core is positioned
Guarantee the accuracy of oil pipe position, but inevitably there are feelings existing for castingin oil pipe cantilever sometimes in technique setting
Condition leads to the case where oil pipe rotates after coremaking, moves or detach from sand core in production, or the oil in casting process
Pipe is rotated with molten iron floating direction, this can all cause, and sand core semi-finished product are scrapped or casting is scrapped, and is existed so solving oil pipe
Orientation problem in sand core becomes the key of positioning oil pipe.
Existing to have for fixing means of such oil pipe in sand core: 1) end surface by oil pipe in casting is slightly
It polishes, improves the roughness on oil pipe surface, improve the frictional force between oil pipe and sand core；2) one end being embedded in sand core is done
It is long, and baffle effect is played in oil pipe end welding rod iron or steel plate, the processing removal redundance in the subsequent cleaning of casting；
But in actual production process, all there are some problems for the fixation of oil pipe and lead to casting report in above method
Useless hidden danger polishes to pre-buried part and does not meet wanting for customer in most cases in the method for promoting oil pipe surface roughness
It asks, and for the oil pipe of thin-walled, the method misoperation may directly result in oil pipe and scrap, for extending oil pipe welding positioning
For the method for the subsequent scale removal process processing removal of baffle there is also certain limitation, often there are the portions such as core cavity in such oil pipe
Higher, the complicated for operation problem of the difficulty of processing of position.
Summary of the invention
In view of this, the regular worker it is necessary to provide the cantilever castingin oil pipe of a kind of pair of oil pipe positioning stablity in sand core
Dress.
A kind of fixing tool of cantilever castingin oil pipe in sand core, including positioning device and fixed device, positioning device is
Centre offers the annular workpieces of insertion through-hole, and positioning device is evenly arranged with several tapped through holes in the circumferential direction；Fixed device
There is externally threaded adjusting rod to be several, the tapped through hole of adjusting rod and positioning device matches, to screw in calmly by adjusting rod
The mode of the tapped through hole of position device is placed on the end positioning of the cantilever oil pipe inside positioning device.
Preferably, positioning device is fixed necklace, and fixed necklace is annulus, 4~6 be evenly arranged on the side wall of annulus
A tapped through hole, the axis direction of tapped through hole hang down identical as the radial direction of annulus.
Preferably, positioning device is fixed necklace, and fixed necklace is positive n(n≤4) side annular, each of the positive side n annular
4~6 tapped through holes of a tapped through hole or evenly spaced setting are provided on the middle position on side, tapped through hole
Axis direction perpendicular to positive n while annular while.
Preferably, fixed device is standing screw, and one end of standing screw is provided with to be matched with screw thread in tapped through hole
Screw thread, the depth of thread on standing screw is greater than the depth of tapped through hole；The other end of standing screw is provided with baffle, baffle
It is set as regular hexagon, the width dimensions of regular hexagon are matched with standard wrench size.
Preferably, the diameter of fixed necklace is 20~30mm bigger than tubing diameter, and thickness is at least 20mm, and width is that screw rod is straight
3~5 times of diameter, the diameter and standing screw of tapped through hole are to cooperation；The diameter of standing screw is 10~20mm, standing screw
Length thus in length and width the two of sand core smaller value 1/3, the depth of thread of standing screw is greater than 50mm, standing screw
Baffle with a thickness of 10mm.
The present invention is a kind of fixing tool of cantilever castingin oil pipe in sand core, including positioning device and fixed device.Make
With the fixing tool relatively before oil pipe fixing means biggest advantage be not need to destroy vitta structure, effectively avoid
The risk of its possible Tubing failure, oil pipe presentation quality difference, avoid subsequent needs processing and it is that may be present plus
The problem of work difficulty.And largely simplify operating procedure, improve fixed reliability, fixed strong of oil pipe
Degree and accuracy have extraordinary guarantee.It especially solves the problems, such as the rotational positioning of cantilever oil pipe, makes it in semi-finished product and casting
Shi Buhui shakes displacement or floating.And due to the special setting of such method limit aspect fixed for oil pipe, thoroughly
Solve due to the fixed bad bring oil pipe of oil pipe partially caused by casting scrap the problems such as.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of fixing tool of the cantilever castingin oil pipe in sand core.
Fig. 2 is the positioning device structure schematic diagram of circular ring structure.
Fig. 3 is the positioning device cross-sectional view of circular ring structure.
Fig. 4 is the positioning device cross-sectional view of positive six side rings structure.
Fig. 5 is the structural schematic diagram of fixed device.
Fig. 6 is the use state diagram of fixing tool of the cantilever castingin oil pipe in sand core.
Fig. 7 is the stationary state schematic diagram of fixing tool of the cantilever castingin oil pipe in sand core.
In figure: fixing tool 1 of the cantilever castingin oil pipe in sand core, fixed necklace 2, tapped through hole 21, standing screw 3,
Screw flight 31, baffle 32, cantilever oil pipe 4, sand core 5.
Specific embodiment
Please refer to Fig. 1, a kind of fixing tool 1 of cantilever castingin oil pipe in sand core, including positioning device and fixed device,
Positioning device is the annular workpieces that centre opens up insertion through-hole, is evenly arranged in the circumferential direction on the side wall of positioning device several
Tapped through hole 21；Fixed device is several with externally threaded adjusting rod, the tapped through hole 21 of the adjusting rod and positioning device
Match, in a manner of screwing in the tapped through hole 21 of positioning device by adjusting rod, the cantilever being placed on inside positioning device is oily
The end of pipe positions.
Wherein, the through-hole opened up among positioning device is used to be inserted into the end of cantilever oil pipe 4, then will by fixed device
Relative positioning is fixed between cantilever oil pipe 4 and positioning device, and after quicksand, positioning device and fixed device and cantilever oil pipe
End is embedded in sand core 5.Positioning device has biggish surface area, and sand core 5 is stably fixed at after being combined with sand core 5
It is interior, there is no shaking or the problem of drift, meanwhile, one end of the adjusting rod of fixed device is by the end of cantilever oil pipe 4 and positioning
Device is relatively fixed, and then limits cantilever oil pipe 4 and the problem of shaking or drifting about is not present relative to positioning device, also, is solid
The other end leakage of the adjusting rod of device is determined in the outside of positioning device, and the adjusting rod dispersion of this part leakage stretches to sand core 5
Inside, while further increasing the contact area of the fixing tool and sand core, each adjusting rod plays limit muscles and bones
Effect avoids the generation for the phenomenon that positioning device is relative to sand core rotation.
Referring to figure 2. and Fig. 3, positioning device are fixed necklace 2, and fixed necklace 2 is annulus, on the side wall of annulus uniformly
4~6 tapped through holes 21 being provided with, the axis direction of tapped through hole 21 and the radial direction of annulus are consistent.
Referring to figure 4., positioning device is fixed necklace 2, and fixed necklace 2 is positive n(n≤4) arris cylinder, the positive side n shape rib
The centre of cylinder opens up insertion through-hole, to form the positive side n shape ring, positive n in each of shape ring on to be provided with a screw thread logical
4~6 tapped through holes 21 in hole 21 or evenly spaced setting, tapped through hole 21 be located at positive n while shape ring while interposition
It sets, and direction is perpendicular to the side of positive n side ring.Apex angle structure possessed by the shape ring of the positive side n can further limit positioning device
The generation of the phenomenon that relative to sand core rotation.
Referring to figure 5., the adjusting rod of fixed device is standing screw 3, and one end of standing screw 3 is provided with and tapped through hole
The external screw thread that screw thread matches in 21, the depth of thread on standing screw 3 are greater than tapped through hole 21；The other end of standing screw 3
It is provided with baffle 32, baffle 32 is set as regular hexagon, and the width dimensions standard wrench size of regular hexagon matches, similarly,
Baffle 32 has biggish surface area, can increase the end of screw rod and the bonded area of sand core, to increase screw rod and sand core
Bond strength.
Fig. 6 and Fig. 7 are please referred to, the application method of fixing tool 1 of the cantilever castingin oil pipe in sand core in the present invention are as follows:
When coremaking, cantilever oil pipe 4 is placed according to pre-buried one end positioning of the cantilever oil pipe 4 of sand core 5；Fixed necklace 2 is set to cantilever
The end of the embedded section of oil pipe 4 keeps the end of the embedded section of cantilever oil pipe 4 to be centrally placed in the inside of fixed necklace 2；By edge
All standing screws 3 are uniformly tightened, and make the end of screw rod 3 against cantilever oil pipe 4, carry out quicksand coremaking operation later.
In the present embodiment, the diameter of fixed necklace 2 is 30mm bigger than 4 diameter of oil pipe, and with a thickness of 25mm, width is that screw rod is straight
The diameter of 5 times of diameter, tapped through hole 21 is matched with standing screw 3；The diameter of standing screw 3 is 15mm, the length of standing screw 3
Degree is 1/3 of smaller value in length or width the two of pre-buried sand core, and the depth of thread of standing screw 3 is 80mm, fixed spiral shell
The baffle 32 of bar 3 is with a thickness of 10mm.
Fixing tool of the cantilever castingin oil pipe in sand core in the present invention may be used as after simple part changes
Fixing tool of the cantilever castingin oil pipe in sand mold, is also used as the fixing tool of other cantilever castingin parts.
Claims (3)
1. a kind of fixing tool of cantilever castingin oil pipe in sand core, it is characterised in that: including positioning device and fixed device, institute
Stating positioning device is the annular workpieces that centre offers insertion through-hole, and it is logical that positioning device has been uniformly arranged in the circumferential direction several screw threads
Hole, the positioning device are fixed necklace, and the diameter of fixed necklace is 20~30mm bigger than tubing diameter, and thickness is at least 20mm,
Width is 3~5 times of screw diameter, and the diameter of tapped through hole is matched with standing screw；The fixed device has to be several
The tapped through hole of externally threaded adjusting rod, adjusting rod and positioning device matches, to screw in the spiral shell of positioning device by adjusting rod
The mode of line through-hole is placed on the end positioning of the cantilever oil pipe inside positioning device, and the adjusting rod is standing screw, fixed
One end of screw rod is provided with the external screw thread that screw thread matches in the tapped through hole, and the external screw thread depth on standing screw is greater than
The depth of the tapped through hole, the other end of standing screw are provided with baffle, and baffle is designed as regular hexagon, the width of regular hexagon
Degree size is matched with standard wrench size；The diameter of the standing screw is 10~20mm, and the length of standing screw is pre-buried
Sand core length or width the two in smaller value 1/3, the depth of thread of standing screw is greater than 50mm, the baffle of standing screw
With a thickness of 10mm；When coremaking, cantilever oil pipe is placed according to pre-buried one end positioning of the cantilever oil pipe of sand core；By fixterm snare
To the end of the embedded section of cantilever oil pipe, the end of the embedded section of cantilever oil pipe is kept to be centrally placed in the inside of fixed necklace 2；
It will uniformly be tightened along all standing screws, and make the end of screw rod against cantilever oil pipe, and carry out quicksand coremaking operation later.
2. fixing tool of the cantilever castingin oil pipe as described in claim 1 in sand core, it is characterised in that: the fixed necklace
For annulus, 4~6 tapped through holes being evenly arranged on the side wall of annulus, the axis direction of tapped through hole and the radius of annulus
Direction is identical.
3. fixing tool of the cantilever castingin oil pipe as described in claim 1 in sand core, it is characterised in that: the fixed necklace
Be positive the side n shape ring, n≤4, and positive n is provided with a tapped through hole on the middle position in each of shape ring, or interval is
Even 4~6 tapped through holes of setting, the axis direction of tapped through hole perpendicular to positive n while shape ring while.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710627527.0A CN107282893B (en) | 2017-07-28 | 2017-07-28 | A kind of fixing tool of cantilever castingin oil pipe in sand core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710627527.0A CN107282893B (en) | 2017-07-28 | 2017-07-28 | A kind of fixing tool of cantilever castingin oil pipe in sand core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107282893A CN107282893A (en) | 2017-10-24 |
| CN107282893B true CN107282893B (en) | 2019-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710627527.0A Active CN107282893B (en) | 2017-07-28 | 2017-07-28 | A kind of fixing tool of cantilever castingin oil pipe in sand core |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109175235B (en) * | 2018-07-10 | 2021-10-12 | 陕西柴油机重工有限公司 | Fixing method of mud core, box body and casting method of multi-cavity channel casting |
| CN112570657B (en) * | 2020-11-25 | 2022-09-06 | 共享装备股份有限公司 | Oil pipe sand core of air inlet cylinder |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106735092B (en) * | 2017-01-13 | 2018-11-27 | 共享装备股份有限公司 | One-armed pipe castingin forming method |
| CN106694826B (en) * | 2017-01-19 | 2018-10-12 | 百色学院 | A kind of sand core support device improving large-scale main oil gallery blowhole quality |
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| CN107282893A (en) | 2017-10-24 |
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