CN107030262A - A kind of self-locking type location structure of 3D printing core for heavy castings - Google Patents
A kind of self-locking type location structure of 3D printing core for heavy castings Download PDFInfo
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- CN107030262A CN107030262A CN201710308807.5A CN201710308807A CN107030262A CN 107030262 A CN107030262 A CN 107030262A CN 201710308807 A CN201710308807 A CN 201710308807A CN 107030262 A CN107030262 A CN 107030262A
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- core
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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
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention belongs to the self-locking type location structure in the field of 3D printing core, more particularly to a kind of 3D printing core for heavy castings.The self-locking type location structure is primary and secondary buckle structure, the primary and secondary buckle structure is made up of sub-buckle and box, in through trapezoidal shape, the sub-buckle and the box be respectively provided on adjacent two pieces of cores and it is supporting set, realize the positioning of core for sub-buckle to be embedded in into box during core under core.The present invention is spacing by being provided to core in X, Y direction, single dimension of the prior art positioning is changed into double dimension positioning, core is avoided displacement occur during transporting, burying case, prevent resulting dimensional discrepancy, suitable for the 3D printing core of heavy castings, such product is effectively solved to use the problem of difficulty during 3D printing core carry out group core is high, precision is difficult to control to, and, directly it can be printed together with core by 3D printer, without preparing frock in advance, production cost is reduced.
Description
Technical field
The invention belongs to the lower core positioning knot in the field of 3D printing core, more particularly to a kind of heavy castings 3D printing core
Structure.
Background technology
At present, sand mold is divided into upper and lower two layers by general 3D printing containerless casting method, is printed respectively through 3D printer
After the completion of, fit together to form casting profile, and casting of molten metal formation casting is carried out eventually through mould assembling operation.But,
Exceed 2500mm heavy castings for length dimension, especially large revolving body class product, if using prior art into
Type method, due to being limited by the work box size of 3D printer, it is necessary to which its lower floor's sand mold is divided into multiple suitable printers
The small core of size.Wherein, these small cores carry out single dimension positioning group core by way of making template nowel cone, using people
Work measurement control core size.So, such group of core mode is cumbersome, and the scale error of generation is big, causes the chi of casting
Very little precision can not be guaranteed.Therefore, a kind of group of core precision height, the cores suitable for heavy castings how is designed to position and tie
Structure, as current urgent problem.
The content of the invention
For the above-mentioned problems in the prior art, the invention provides a kind of 3D printing core for heavy castings
Self-locking type location structure, by core X, Y direction provide it is spacing, by single dimension of the prior art positioning be changed into
Double dimension positioning, location structure is realized by coordinating with core procedure, it is to avoid core displacement occurs during transporting, burying case,
Prevent resulting dimensional discrepancy, it is adaptable to the 3D printing core of heavy castings, effectively solve such product and use 3D printing
The problem of difficulty is high during core carry out group core, precision is difficult to control to, also, directly can be printed together with core by 3D printer
Out, without preparing frock in advance, production cost is reduced, operation is simplified, specification operating process reduces operation difficult
Degree.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
The invention provides a kind of self-locking type location structure of the 3D printing core for heavy castings, the 3D printing core by
The small core group core of polylith is formed, it is characterised in that the location structure is primary and secondary buckle structure, including sub-buckle and box, Mei Gesuo
Point core face for stating the X-direction of small core is provided with least one sub-buckle and/or box, the Y direction of each small core
The sub-buckle that is provided with least one sub-buckle and/or box, two pieces of adjacent small cores of point core face and box with being arranged
Put, for sub-buckle to be embedded in into box during core under core, to realize that double dimensions of core are positioned.
Further, the primary and secondary buckle structure is in through trapezoidal shape, and its cross sectional dimensions ratio is：a=1.1c,b=
1.4a, c=d/8, wherein, upper bottom is a, is gone to the bottom as b, a height of c, and core width is d.
Further, high c is in the cross sectional dimensions of the primary and secondary buckle structure：50mm≤c≤100mm.
Further, the edges and corners that the double buckle coordinates are set to fillet；Preset clearance between the double buckle.
Further, in the cross section of the primary and secondary buckle structure, the gap of the primary and secondary buckle structure is 0.5mm.
Further, in the cross section of the primary and secondary buckle structure, the gradient of the primary and secondary buckle structure is 100 °.
Further, the sub-buckle and box are structure as a whole with small core, directly pass through 3D printer printing shaping.
Meanwhile, present invention also offers a kind of use of the self-locking type location structure of the 3D printing core for heavy castings
Method, it is characterised in that comprise the following steps：
（1）Sand mold is carried out by piecemeal processing according to the size of product and the size of 3D printing work box, is fabricated to some pieces small
Core；
（2）The Design Orientation structure on point core face of every two pieces adjacent small cores：According to point core face of every two pieces adjacent small cores
Length, separately design the primary and secondary buckle structure of varying number on described point of core face, the primary and secondary buckle structure is in through trapezoidal
Shape, carries out supporting set on point core face of every two pieces small adjacent cores in the form of sub-buckle and box respectively；
（3）Core is played successively, and the small core on edge is first subjected to lower core, primary and secondary buckle structure is then close to again to its adjacent small core
Point core face under core, so repeatedly, until being sequentially completed a group core；
（4）After the completion of group core, every piece small core pass through the primary and secondary buckle structure on point core face of other small cores adjacent thereto come
Its X, the free degree of Y direction are limited, double dimension lock-bits of whole cores are realized.
Beneficial effects of the present invention are as follows：
（1）The invention provides a kind of self-locking type location structure based on 3D printing core, by being carried to core in X, Y direction
Supply spacing, single dimension of the prior art positioning is changed into double dimensions positions, and effectively solves such product and uses 3D printing sand
The problem of difficulty is high during core carry out group core, precision is difficult to control to, location structure is realized by coordinating with core procedure, it is to avoid core
There is displacement during transporting, burying case, prevent resulting dimensional discrepancy.
（2）The invention provides a kind of self-locking type location structure based on 3D printing core, it is adaptable to the 3D of heavy castings
Core is printed, the problem of such product uses the group core low precision of 3D printing core is effectively solved, also, directly can be beaten by 3D
Print machine is printed together with core, without preparing frock in advance, reduces production cost, simplifies operation, specification operation
Flow, reduces operation difficulty.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is location structure schematic diagram of the invention.
Wherein, 1, box, 2, core, 3, sub-buckle, 4, sand mold, 5, primary and secondary buckle structure.
Embodiment
In order that those skilled in the art more fully understand technical scheme, with reference to specific embodiment to this
Invention is described in further detail.The embodiments described below is exemplary, is only used for explaining the present invention, without being understood that
For limitation of the present invention.
According to an aspect of the present invention, the invention provides a kind of self-locking type of the 3D printing core for heavy castings
Location structure, as shown in figure 1, the location structure is primary and secondary buckle structure, including sub-buckle and box, the X of each small core
Point core face of direction of principal axis is provided with least one sub-buckle and/or box, point core face of the Y direction of each small core and set
There is the supporting setting of sub-buckle and box at least one sub-buckle and/or box, two pieces of adjacent small cores, in core
Sub-buckle is embedded in box during lower core, to realize that double dimensions of core are positioned.Further, the sub-buckle and box are with small core
Integrative-structure, directly passes through 3D printer printing shaping.Thus, the self-locking type location structure that the present invention is provided, it is adaptable to large-scale
The 3D printing core of casting, effectively solves the problem of such product uses the group core low precision of 3D printing core, also, can be direct
Printed together with core by 3D printer, without preparing frock in advance, reduce production cost, simplify operation, advised
Model operating process, reduces operation difficulty.
According to a particular embodiment of the invention, the setting size of the primary and secondary buckle structure is not particularly limited, as long as can
Sub-buckle is embedded in box to realize the positioning of core during core under core.As depicted in figs. 1 and 2, by the double buckle
Each is dimensioned so as to：Upper bottom is a, is gone to the bottom as b, a height of c, and core width is d, and the gap of the primary and secondary buckle structure is e, described
The gradient of primary and secondary buckle structure is f.Wherein, shown in the cross-sectional view of the primary and secondary buckle structure in Fig. 1, the primary and secondary
Buckle structure is in through trapezoidal shape, can be set as every dimension scale of the primary and secondary buckle structure：a=1.1c；b=
1.4a；c=d/8；The gradient f of the primary and secondary buckle structure is about 100 °；Therefore, be conducive to providing core simultaneously in X, Y direction
Stable is spacing, realizes the self-locking type positioning of core.Further, high c in the cross sectional dimensions of the primary and secondary buckle structure
Specific range set be：50mm≤c≤100mm.Wherein, the cross-sectional view of the primary and secondary buckle structure in Fig. 1
Shown, the edges and corners of the double buckle respective outer side edges are set to fillet, can be by the other sizes ratio of the primary and secondary buckle structure
It is set as：The gap e of the primary and secondary buckle structure is 0.5mm；Further, the primary and secondary buckle structure is in design, it should in institute
State preset clearance between double buckle；Therefore, be conducive to the primary and secondary buckle structure to smoothly complete lower core operation, be easy to group core to install.
According to a particular embodiment of the invention, the setting size of the primary and secondary buckle structure occurs a certain degree of inclined in manufacturing process
Difference, can be by group core dimensional discrepancy control in the range of ± 0.5mm.It is thus, spacing by being provided to core in X, Y direction,
Single dimension of the prior art positioning is changed into double dimension positioning, such product is effectively solved and uses 3D printing core carry out group core
When the problem of difficulty is high, precision is difficult to control to, location structure is realized by coordinating with core procedure, it is to avoid core is being transported, buried
Occur displacement during case, prevent resulting dimensional discrepancy.
Meanwhile, present invention also offers a kind of use of the self-locking type location structure of the 3D printing core for heavy castings
Method, it is characterised in that comprise the following steps：
（1）Sand mold is carried out by piecemeal processing according to the size of product and the size of 3D printing work box, is fabricated to some pieces small
Core.
According to a particular embodiment of the invention, as shown in figure 1, the size and 3D printing work box of the invention according to product
Size by sand mold carry out piecemeal processing, be divided into 8 pieces of cores, be numbered successively, labeled as 1#-8#.Wherein, 1#-8# each
The boundary face of core is made up of point core face and edge surface, and described point of core face is configured respectively along X, Y direction, the edge
Face retains the shape of roughing sand type and remained unchanged；Further, the width of the core is d, also, 1#-8# each core
Width d is set to equal length.
（2）The Design Orientation structure on point core face of every two pieces adjacent small cores：According to point of every two pieces adjacent small cores
The length in core face, separately designs the primary and secondary buckle structure of varying number, the primary and secondary buckle structure is in through on described point of core face
Trapezoidal shape, carries out supporting set on point core face of every two pieces small adjacent cores in the form of sub-buckle and box respectively.
According to a particular embodiment of the invention, as shown in figure 1, the location structure be primary and secondary buckle structure, including sub-buckle and
Box, point core face of the X-direction of each small core is provided with least one sub-buckle and/or box, each small sand
Point core face of the Y direction of core be provided with sub-buckle at least one sub-buckle and/or box, two pieces of adjacent small cores and
Box is supporting to be set, for sub-buckle to be embedded in into box during core under core, to realize that double dimensions of core are positioned.Further,
The sub-buckle and box are structure as a whole with small core, directly pass through 3D printer printing shaping.According to the specific reality of the present invention
Example is applied, the double buckle structure setting is divided on core face each core of 1#-8#, also, on point core face of adjacent two pieces of cores
Sub-buckle and box are respectively arranged with, is specifically set in matching used form.
According to a particular embodiment of the invention, by the double buckle each is dimensioned so as to：Upper bottom is a, is gone to the bottom as b,
A height of c, core width is d, and the gap of the primary and secondary buckle structure is e, and the gradient of the primary and secondary buckle structure is f.According in Fig. 1
Shown in the cross-sectional view of the primary and secondary buckle structure, the primary and secondary buckle structure is in through trapezoidal shape, by the double buckle
Every dimension scale of structure is set as：a=1.1c；b=1.4a；c=d/8；The gradient f of the primary and secondary buckle structure is about 100 °.Enter
One step, the high c of the primary and secondary buckle structure specific range set is：50mm≤c≤100mm.Also, the primary and secondary buckle structure
The edges and corners of cooperation are set to fillet, can be set as the other sizes ratio of the primary and secondary buckle structure：The primary and secondary is buckled
The gap e of structure is 0.5mm；Further, the primary and secondary buckle structure is in design, it should between being reserved between the double buckle
Gap；Therefore, be conducive to the primary and secondary buckle structure to smoothly complete lower core operation, be easy to group core to install.According to the specific reality of the present invention
Example is applied, the double buckle structure setting is on point core face of each core of 1#-8#, according to point core face of every two pieces of adjacent cores
Length, separately designs the primary and secondary buckle structure of varying number on described point of core face, i.e. parallel to point core on core width
Face is disposed as 1 double buckle structure, and point core face on core width is disposed as 2 double buckle structures, institute
The upper bottom a, bottom b, high c of primary and secondary buckle structure are stated according to step（1）The core width d of middle setting numerical value is configured, tool
Body sets standard to be a=1.1c, b=1.4a, c=d/8, and gradient f is 100 °, and gap e is 0.5mm, in order to stable position.Enter one
Step, a certain degree of deviation occurs in the setting size of the primary and secondary buckle structure in manufacturing process, can be inclined by group core size
Difference control is in the range of ± 0.5mm.Thus, it is spacing by being provided to core in X, Y direction, by one-dimensional of the prior art
Degree positioning is changed into double dimension positioning, effectively solves such product and is difficult to using difficulty height, precision during 3D printing core carry out group core
The problem of control, location structure is realized by coordinating with core procedure, it is to avoid core displacement occurs during transporting, burying case,
Prevent resulting dimensional discrepancy.
（3）Core is played successively, and the small core on edge is first subjected to lower core, primary and secondary buckle structure is then close to again adjacent small to its
Core under point core face of core, so repeatedly, until being sequentially completed a group core.
According to a particular embodiment of the invention, by 1#-8#, each core plays core successively in sequence, and specific operation process is such as
Under：First, lower core is carried out to 1# cores；Then, the box in the primary and secondary buckle structure set on 1# cores is close to, by 2# cores
Installed with the sub-buckle of the supporting setting of box of the 1# cores, lower core is carried out to 2# cores；So repeatedly, it is sequentially completed 1#
The group core of core to 8# cores is operated.
（4）After the completion of group core, the primary and secondary on point core face that every piece small core passes through other small cores adjacent thereto is buckled
Structure come limit its X, Y direction the free degree, realize double dimension lock-bits of whole cores.
According to a particular embodiment of the invention, as shown in Fig. 2 each core of 1#-8# is in self-locking type positioning states, tool
Body sets as described below：Two points of core faces of 1# cores pass through supporting setting on 2# cores adjacent thereto, 3# cores respectively
Primary and secondary buckle structure carries out locking spacing, the X of limitation 1# cores, the free degree of Y-axis both direction；Two points of core faces of 2# cores point
It is not spacing by the primary and secondary buckle structure progress locking of supporting setting on 1# cores adjacent thereto, 4# cores, limitation 2# cores
X, Y-axis the both direction free degree；So repeatedly, the double buckle of each core of 1#-8# respectively by itself on each point of core face
The primary and secondary buckle structure progress locking of supporting setting in structure and other cores adjacent with its point of core face is spacing, limits the core
X, Y-axis the both direction free degree, thus, whole sand mold realize the lock-bit of whole cores, have been entirely limited core X, Y-axis
The free degree in direction.Thus, it is spacing by being provided to core in X, Y direction, single dimension of the prior art is positioned and become
Positioned for double dimensions, effectively solve such product and asked using difficulty during 3D printing core carry out group core is high, precision is unmanageable
Topic, location structure is realized by coordinating with core procedure, it is to avoid core displacement occurs during transporting, burying case, prevents thus
The dimensional discrepancy of generation.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example are described
Structure, material or feature are contained at least one embodiment of the present invention or example.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can in an appropriate manner be combined in any one or more embodiments or example.
Claims (8)
1. a kind of self-locking type location structure of 3D printing core for heavy castings, the 3D printing core is by the small core of polylith
Group core is formed, it is characterised in that the location structure is primary and secondary buckle structure, includes the X of sub-buckle and box, each small core
Point core face of direction of principal axis is provided with least one sub-buckle and/or box, point core face of the Y direction of each small core and set
There is the supporting setting of sub-buckle and box at least one sub-buckle and/or box, two pieces of adjacent small cores, in core
Sub-buckle is embedded in box during lower core, to realize that double dimensions of core are positioned.
2. the self-locking type location structure as claimed in claim 1 based on 3D printing core, it is characterised in that the primary and secondary is buckled
Structure is in through trapezoidal shape, and its cross sectional dimensions ratio is：A=1.1c, b=1.4a, c=d/8, wherein, upper bottom is a, and going to the bottom is
B, a height of c, core width are d.
3. the self-locking type location structure as claimed in claim 2 based on 3D printing core, it is characterised in that the primary and secondary is buckled
High c is in the cross sectional dimensions of structure：50mm≤c≤100mm.
4. the self-locking type location structure as claimed in claim 1 based on 3D printing core, it is characterised in that the double buckle is matched somebody with somebody
The edges and corners of conjunction are set to fillet；Preset clearance between the double buckle.
5. the self-locking type location structure as claimed in claim 4 based on 3D printing core, it is characterised in that the primary and secondary is buckled
In the cross section of structure, the gap of the primary and secondary buckle structure is 0.5mm.
6. the self-locking type location structure as claimed in claim 1 based on 3D printing core, it is characterised in that the primary and secondary is buckled
In the cross section of structure, the gradient of the primary and secondary buckle structure is 100 °.
7. the self-locking type location structure as claimed in claim 1 based on 3D printing core, it is characterised in that the sub-buckle and mother
Button is structure as a whole with small core, directly passes through 3D printer printing shaping.
8. a kind of self-locking type location structure for the 3D printing core of heavy castings as described in claim any one of 1-7
Application method, it is characterised in that comprise the following steps：
（1）Sand mold is carried out by piecemeal processing according to the size of product and the size of 3D printing work box, is fabricated to some pieces small
Core；
（2）The Design Orientation structure on point core face of every two pieces adjacent small cores：According to point core face of every two pieces adjacent small cores
Length, separately design the primary and secondary buckle structure of varying number on described point of core face, the primary and secondary buckle structure is in through trapezoidal
Shape, carries out supporting set on point core face of every two pieces small adjacent cores in the form of sub-buckle and box respectively；
（3）Core is played successively, and the small core on edge is first subjected to lower core, primary and secondary buckle structure is then close to again to its adjacent small core
Point core face under core, so repeatedly, until being sequentially completed a group core；
（4）After the completion of group core, every piece small core pass through the primary and secondary buckle structure on point core face of other small cores adjacent thereto come
Its X, the free degree of Y direction are limited, double dimension lock-bits of whole cores are realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710308807.5A CN107030262A (en) | 2017-05-04 | 2017-05-04 | A kind of self-locking type location structure of 3D printing core for heavy castings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710308807.5A CN107030262A (en) | 2017-05-04 | 2017-05-04 | A kind of self-locking type location structure of 3D printing core for heavy castings |
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| Publication Number | Publication Date |
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| CN107030262A true CN107030262A (en) | 2017-08-11 |
Family
ID=59538203
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710308807.5A Pending CN107030262A (en) | 2017-05-04 | 2017-05-04 | A kind of self-locking type location structure of 3D printing core for heavy castings |
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| CN108356231A (en) * | 2018-04-27 | 2018-08-03 | 共享智能铸造产业创新中心有限公司 | The lock core structure of 3D printing sand mold |
| CN108817316A (en) * | 2018-06-29 | 2018-11-16 | 共享智能铸造产业创新中心有限公司 | A kind of sand mold classifying method of gear box casing casting |
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| CN108817316A (en) * | 2018-06-29 | 2018-11-16 | 共享智能铸造产业创新中心有限公司 | A kind of sand mold classifying method of gear box casing casting |
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Application publication date: 20170811 |