CN109434027A - A kind of inner core die - Google Patents
A kind of inner core die Download PDFInfo
- Publication number
- CN109434027A CN109434027A CN201811641709.4A CN201811641709A CN109434027A CN 109434027 A CN109434027 A CN 109434027A CN 201811641709 A CN201811641709 A CN 201811641709A CN 109434027 A CN109434027 A CN 109434027A
- Authority
- CN
- China
- Prior art keywords
- stub
- core model
- guide rail
- sliding block
- core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 241000826860 Trapezium Species 0.000 claims description 6
- 238000005266 casting Methods 0.000 abstract description 39
- 238000003754 machining Methods 0.000 abstract description 9
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000008602 contraction Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008828 contractile function Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- 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
- B22C9/101—Permanent 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
- B22C9/103—Multipart cores
Abstract
The present invention relates to a kind of inner core dies, including removable pin, the first core model and the second core model；The first guide rail and the second guide rail that the removable pin is included stub and is radially arranged on stub side wall centered on stub main shaft, first core model and the second core model are respectively equipped with the first sliding groove and second sliding slot being slidably matched with the first guide rail and the second guide rail；And when the stub does reciprocating linear motion along its axis, the first guide rail and the second guide rail on side wall drive first core model and the second core model to do reciprocating linear motion along the radial direction of the stub respectively.The present invention when casting demoulds core model can to contract, without setting pattern draft casting can smooth depanning, solve the problems, such as that cooling velocity is excessively slow and machining allowance is big caused by deep chamber casting causes casting blocked up because of pattern draft technological problems.
Description
Technical field
The present invention relates to cast casting technical fields, more particularly to a kind of inner core die.
Background technique
In the casting technique of industrial casting, the inner cavity of casting is the mandrel molding by metal mold, its advantage is that molding
Precision is high, cooling velocity is fast, and repeats and reuse.But it is maximum the disadvantage is that casting generally requires 3 ° in depanning
Pattern draft could successfully make casting depanning, this also results in the excessive problem of lumen thickness of casting.When specific calculating,
As the every increase 100mm of the depth of inner cavity of casting, the thickness of inner cavity is also proportionally increased 5.25mm；Therefore, when casting
When lumen thickness is blocked up, the problems such as setting rate that will lead to casting is slow, machining allowance is big and surface layer compacted zone can not remove,
To reduce the castability of casting.
Summary of the invention
Based on this, it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of inner core dies, demould in casting
When core model can to contract, without setting pattern draft casting can smooth depanning, solve deep chamber casting because of pattern draft
Technological problems and the excessively slow and big machining allowance problem of cooling velocity caused by causing casting blocked up.
To achieve the goals above, the technical solution adopted by the present invention are as follows:
A kind of inner core die, including removable pin, the first core model and the second core model；The removable pin includes stub and along stub
The first guide rail and the second guide rail being radially arranged on stub side wall, first core model and the second core model are respectively equipped with and first
The first sliding groove and second sliding slot that guide rail and the second guide rail are slidably matched；
The first guide rail and the second guide rail difference and when the stub does reciprocating linear motion along its axis, on side wall
First core model and the second core model is driven to do reciprocating linear motion along the radial direction of the stub.
Further, successively alternately there are three the first core model and three the second core models for distribution in the outside of the stub, described
It is correspondingly successively alternately set on the side wall of stub there are three the first guide rail and three the second guide rails, three the first guide rails and three
Second guide rail is slidably located in respectively in corresponding first sliding groove and second sliding slot.
Further, the lateral surface of three first core models and the lateral surface of three the second core models enclose a circle jointly
Column side, and setting is isolated with stub in the inside of the first core model and the second core model.
Further, the side wall outer end CONTACT WITH FRICTION of the side wall outer end of first core model and the second core model, and the first core model
Side wall inner end and the second core model side inner end between form gap.
Further, the stub is cylindrical structure；
First guide rail is made of first connecting portion and the first sliding block, and first sliding block is the rectangular batter post in section
Body structure, first sliding block are connect by the first connecting portion with the stub, and along the vertical section of the stub, described
First sliding block is axial at sharp angle with the stub；
Second guide rail is made of second connecting portion and the second sliding block, and second sliding block is the rectangular batter post in section
Body structure, second sliding block are connect by the second connecting portion with the stub, and along the vertical section of the stub, described
Second sliding block is axial at sharp angle with the stub.
Further, on the vertical section of the stub, the section of the first connecting portion is at right-angled trapezium shape；Described first
The inner face of sliding block is arranged on the inclined-plane of the first connecting portion；
On the vertical section of the stub, the section of the second connecting portion is at right-angled trapezium shape；Second sliding block
Inner face is arranged on the inclined-plane of the second connecting portion；
The gradient on the first connecting portion inclined-plane is greater than the gradient on the second connecting portion inclined-plane.
Further, the outside of first sliding block and the first sliding groove CONTACT WITH FRICTION, and its inner face and described first is slided
Slot forms gap；
The outside of second sliding block and the second sliding slot form gap, and its inner face connects with the second sliding slot friction
Touching.
As a result, compared with conventional core model not can be carried out contraction, having the beneficial effect that for inner core die of the invention is poured in casting
When note and solidification, diameter dimension is consistent with the interior chamber size of casting, and in casting demoulding, the first guide rail is driven by stub
Make the first core model and the second core model to contract with the second guide rail, can smoothly go out it is not necessary that pattern draft casting is additionally arranged just
Mould, therefore, the inner cavity of casting can realize few machining allowance, and the setting time of casting can shorten one third, casting
Due to reducing machining allowance so surface dense layer can maximize the retention.Furthermore the configuration of the present invention is simple is led to
It is strong with property, it is manufactured especially suitable for the casting of new-energy automobile driving motor shell and automotive hub, and can also be extended to
Other depth chamber profiled pieces.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of inner core die of the invention；
Fig. 2 is the schematic internal view of inner core die of the invention；
Fig. 3 is the top view of inner core die of the invention；
Fig. 4 is the cross-section diagram of the removable pin of inner core die of the invention.
In figure: 11, stub；12, the first guide rail；121, first connecting portion；122, the first sliding block；13, the second guide rail；131,
Second connecting portion；132, the second sliding block；2, the first core model；21, first sliding groove；22, the side wall outer end of the first core model；23, first
The side wall inner end of core model；3, the second core model；31, second sliding slot；32, the side wall outer end of the second core model；33, the side wall of the second core model
Inner end；The angle of α, the second core model side wall outer end face and corresponding second guide rail being formed radially；β, the first sliding block and the stub
Axial angle；The axial angle of γ, the second sliding block and the stub.
Specific embodiment
To further illustrate that each embodiment, the present invention are provided with attached drawing.These attached drawings are that the invention discloses one of content
Point, first will be to illustrate embodiment, and can cooperate the associated description of specification to explain the operation principles of embodiment.Cooperation
With reference to these contents, those skilled in the art will be understood that other may obtain embodiment and advantages of the present invention.
Please refer to Fig. 1 to Fig. 4；Fig. 1 is the structural schematic diagram of inner core die of the invention, and Fig. 2 is the inside of inner core die
Schematic diagram, Fig. 3 are the top views of inner core die；Fig. 4 is the cross-section diagram of the removable pin of inner core die of the invention.
A kind of inner core die, including removable pin, the first core model 2 and the second core model 3；The removable pin includes stub 11 and along master
The first guide rail 12 being radially arranged on stub side wall and the second guide rail 13 of pin, first core model 2 and the second core model 3 difference
Equipped with the first sliding groove 21 and second sliding slot 31 being slidably matched with the first guide rail 12 and the second guide rail 13；
The first guide rail 12 and the second guide rail and when the stub 11 does reciprocating linear motion along its axis, on side wall
13 drive first core model 2 and the second core model 3 to do reciprocating linear motion along the radial direction of the stub 11 respectively.
Specifically, the outside of the stub 11 is successively alternately distributed there are three the first core model 2 and three the second core models 3,
First guide rail 12 and three the second guide rails 13 there are three correspondingly successively alternately being set on the side wall of the stub 11, three first
Guide rail 12 and three the second guide rails 13 are slidably located in respectively in corresponding first sliding groove 21 and second sliding slot 31.
Specifically, the lateral surface of three first core models 2 and the lateral surface of three the second core models 3 enclose one jointly
Cylindrical side, and setting is isolated with stub 11 in the inside of the first core model 2 and the second core model 3.
Specifically, 32 CONTACT WITH FRICTION of side wall outer end of the side wall outer end 22 of first core model and the second core model, and first
Gap is formed between the side wall inner end 23 of core model and the side inner end 33 of the second core model；
The second core model side wall outer end 32 is 85 °~105 ° with the angle α of corresponding second guide rail 13 being formed radially, this
Embodiment is preferably taken as 96 °.
Specifically, the stub 11 is cylindrical structure；
First guide rail 12 is made of first connecting portion 121 and the first sliding block 122, and first sliding block 122 is section
Rectangular scalene cylinder structure, first sliding block 122 is connect by the first connecting portion 121 with the stub 11, and edge
The axial angle β of the vertical section of the stub 11, first sliding block 122 and the stub 11 is 5 °~9 °, this implementation
Preferably 6 ° of example；
Second guide rail 13 is made of second connecting portion 131 and the second sliding block 132, and second sliding block 132 is section
Rectangular scalene cylinder structure, second sliding block 132 is connect by the second connecting portion 131 with the stub 11, and edge
The axial angle γ of the vertical section of the stub 11, second sliding block 132 and the stub 11 is 2 °~4 °, this implementation
Preferably 2 ° of example.
Specifically, on the vertical section of the stub 11, the section of the first connecting portion 121 is at right-angled trapezium shape；Institute
The inner face for stating the first sliding block 122 is arranged on the inclined-plane of the first connecting portion 121；
On the vertical section of the stub 11, the section of the second connecting portion 131 is at right-angled trapezium shape；Described second is sliding
The inner face of block 132 is arranged on the inclined-plane of the second connecting portion 131.
Specifically, the outside of first sliding block and 21 CONTACT WITH FRICTION of first sliding groove, and its inner face and described first
Sliding slot 21 forms gap；
The outside of second sliding block and the second sliding slot 31 form gap, and its inner face rubs with the second sliding slot 31
Wipe contact.
Illustrate the working principle of inner core die of the invention below:
In casting and casting solidification, the diameter for the periphery that the first core model 2 of the invention and the second core model 3 surround jointly
Size is consistent with the interior chamber size of casting, the mutually locking between any two of the removable pin, the first core model 2 and the second core model 3, described
The side wall outer end 22 of first core model and 32 CONTACT WITH FRICTION of side wall outer end of the second core model, the outside of first sliding block and described the
One sliding slot, 21 CONTACT WITH FRICTION, the inner face of second sliding block and 31 CONTACT WITH FRICTION of second sliding slot；And in demoulding, pass through master
Pin 11 drives the first guide rail 12 and the second guide rail 13 axially movable, so that first sliding block 122 and the second sliding block 132 difference
The opposite sliding in the first sliding groove 21 and second sliding slot 31, and then receive first core model 2 and the second core model 3 inwardly
Contracting, just being capable of smooth depanning without additional setting pattern draft casting.
Compared with conventional core model not can be carried out contraction, inner core die of the invention, in casting pouring and solidification, diameter
Size is consistent with the interior chamber size of casting, and in casting demoulding, drives the first guide rail and the second guide rail to make the by stub
One core model and the second core model to contract, without additional setting pattern draft casting just can smooth depanning, therefore, casting it is interior
Chamber can realize few machining allowance, and specific data are changed to the machining allowance of 3mm from the machining allowance of original 15mm, and casting is solidifying
Gu the time can shorten one third, casting is also due to reduce machining allowance so surface dense layer can obtain to greatest extent
Reservation.Furthermore the configuration of the present invention is simple, it is versatile, especially suitable for new-energy automobile driving motor shell and automotive wheels
The casting of hub manufactures, and can also be extended to other deep chamber profiled pieces.
In addition, inner core die of the invention, the second core model side wall outer end face and corresponding second guide rail are formed radially
Angle α is 96 °, it is ensured that first core model and the second core model do not generate interference when shrinking, and contractile function is better achieved；
The axial angle β of first sliding block and the stub is 6 °, and the axial direction institute of second sliding block and the stub is at folder
Angle γ be 2 °, it is ensured that first core model obtains faster than second core model toward contract, thus guarantee the first core model and
It will not be locked mutually in the contraction process of second core model, keep contraction process more smooth.
One embodiment of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to invention inner core die range therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.
Claims (7)
1. a kind of inner core die, it is characterised in that: including removable pin, the first core model and the second core model；The removable pin includes stub
Distinguish with along the first guide rail of stub being radially arranged on stub side wall and the second guide rail, first core model and the second core model
Equipped with the first sliding groove and second sliding slot being slidably matched with the first guide rail and the second guide rail；
And when the stub does reciprocating linear motion along its axis, the first guide rail and the second guide rail on side wall drive respectively
First core model and the second core model do reciprocating linear motion along the radial direction of the stub.
2. inner core die according to claim 1, it is characterised in that: there are three the outside of the stub is successively alternately distributed
First core model and three the second core models, correspondingly successively alternately set that there are three the first guide rail and three on the side wall of the stub
Second guide rail, three the first guide rails and three the second guide rails are slidably located in respectively in corresponding first sliding groove and second sliding slot.
3. inner core die according to claim 2, it is characterised in that: the lateral surface of three first core models and three second
The lateral surface of core model encloses a cylindrical side jointly, and the inside of the first core model and the second core model is isolated with stub and sets
It sets.
4. inner core die according to claim 3, it is characterised in that: the side wall outer end of first core model and the second core model
Side wall outer end CONTACT WITH FRICTION, and gap is formed between the side wall inner end of the first core model and the side inner end of the second core model.
5. inner core die according to claim 4, it is characterised in that:
The stub is cylindrical structure；
First guide rail is made of first connecting portion and the first sliding block, and first sliding block is the rectangular scalene cylinder knot in section
Structure, first sliding block are connect by the first connecting portion with the stub, and along the vertical section of the stub, and described first
Sliding block is axial at sharp angle with the stub；
Second guide rail is made of second connecting portion and the second sliding block, and second sliding block is the rectangular scalene cylinder knot in section
Structure, second sliding block are connect by the second connecting portion with the stub, and along the vertical section of the stub, and described second
Sliding block is axial at sharp angle with the stub.
6. inner core die according to claim 5, it is characterised in that:
On the vertical section of the stub, the section of the first connecting portion is at right-angled trapezium shape；The inner face of first sliding block
It is arranged on the inclined-plane of the first connecting portion；
On the vertical section of the stub, the section of the second connecting portion is at right-angled trapezium shape；The inner face of second sliding block
It is arranged on the inclined-plane of the second connecting portion；
The gradient on the first connecting portion inclined-plane is greater than the gradient on the second connecting portion inclined-plane.
7. inner core die according to claim 6, it is characterised in that:
The outside of first sliding block and the first sliding groove CONTACT WITH FRICTION, and its inner face and the first sliding groove form gap；
The outside of second sliding block and the second sliding slot form gap, and its inner face and the second sliding slot CONTACT WITH FRICTION.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811641709.4A CN109434027A (en) | 2018-12-29 | 2018-12-29 | A kind of inner core die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811641709.4A CN109434027A (en) | 2018-12-29 | 2018-12-29 | A kind of inner core die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109434027A true CN109434027A (en) | 2019-03-08 |
Family
ID=65539904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811641709.4A Pending CN109434027A (en) | 2018-12-29 | 2018-12-29 | A kind of inner core die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109434027A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110076963A (en) * | 2019-05-30 | 2019-08-02 | 潘美祥 | Tubular storage box manufactures mold |
| CN114096363A (en) * | 2019-04-24 | 2022-02-25 | 尼玛克股份有限公司 | Apparatus and method for removing at least one cooling element from an at least partially demoulded casting, method for introducing at least one cooling element into a core of a casting mould, cooling element and casting |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114096363A (en) * | 2019-04-24 | 2022-02-25 | 尼玛克股份有限公司 | Apparatus and method for removing at least one cooling element from an at least partially demoulded casting, method for introducing at least one cooling element into a core of a casting mould, cooling element and casting |
| CN114096363B (en) * | 2019-04-24 | 2024-03-05 | 尼玛克股份有限公司 | Apparatus and method for removing at least one cooling element from an at least partially demolded casting, method for introducing at least one cooling element into a core of a casting mold, cooling element and casting |
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