CN106040988B - The production method of marine diesel body core - Google Patents
The production method of marine diesel body core Download PDFInfo
- Publication number
- CN106040988B CN106040988B CN201610626792.2A CN201610626792A CN106040988B CN 106040988 B CN106040988 B CN 106040988B CN 201610626792 A CN201610626792 A CN 201610626792A CN 106040988 B CN106040988 B CN 106040988B
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- core
- small
- small core
- cylinder holes
- crankshaft room
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
A kind of production method of marine diesel body core, a core body is prepared first, two cylinder holes cores of one crankshaft room's core of core body including top and two cylinder holes cores of bottom, crankshaft room's core and bottom are formed in one structure and two cylinder holes cores are circumferentially arranged four binding faces being radially-inwardly recessed；The position that complete cylinder holes core is located to binding face position is divided into four parts；The set unification locator card sheet frame in the side wall of crankshaft room's core, the bottom of locator card sheet frame is provided with the neck of the accommodating first small core extension；Four parts are fitted in binding face and form complete marine diesel body core；After four part adhesives are firm, locator card sheet frame is removed.The present invention has the advantages of positioning and dimensional accuracy are preferable, and error is small, are easily achieved.
Description
Technical field
The present invention relates to casting field, in particular relates to a kind of production method of marine diesel body core.
Background technology
The marine diesel oil machine host most of the time is worked under full load situation, is operated sometimes in the case of varying duty,
And ship often navigates by water in jolting, so marine diesel should be able to be under conditions of 15 ° -35 ° of 15 ° -25 ° of trim and heel
Reliably working.And as the frame of main element, it is the skeleton of engine, is the basis of each mechanism work of engine, is born
There is sufficiently high rigidity and intensity just can ensure that each mechanism of engine is long-term just for the various loads of engine, only rack unit
Often work.
Rack unit basal body structure is complicated, and wall thickness variation is big, and cavity shape is irregular, casting mold combined by more than 20 kinds of cores and
Into brigadier does not cause whole casting section thickness to offset and scrap for core positioning, and therefore, the design of sand core structure positioning is in castings production
In there is highly important status, the design of sand core structure positioning has a great impact to the size of casting, wall thickness, rational sand
The design of cored structure positioning is to produce the key of thin-walled diesel-engine body casting.
Core belongs to part relatively common in casting field, is determined according to the structure and size and core that are actually needed core
Position is also all not quite similar, the positioning of conventional core, it is only necessary to and core print is simply molded in a mold can be used, and for some
Combining casting mold, its core by a variety of cores just needs to consider the accuracy of combination core positioning, to avoid because of core
Position inaccurate causes mould dimension not to be inconsistent and produces the deficiency of product rejection；Different cores may require that different location structures,
Such as：The marine diesel airframe components of applicant's production, the part have 10 crankshaft room, 20 cylinder holes, 20 water channel holes,
Minimum ten cores are needed to complete；The concrete structure of each core is as shown in Figure 2：Crankshaft room's core including top
With the cylinder holes core of bottom, the combination of conventional core is that crankshaft room's core, cylinder holes core individually make, and then passes through core
Head bit combination forms crankshaft room, the complete core of cylinder holes casting mold；If crankshaft room, cylinder holes are fabricated directly into entirety
Core, because the annular space that crankshaft room extends downwardly and is formed between caused crankshaft room and cylinder holes needs when designing core shell
Annular movable block is provided with the position, annular movable block needs to remove after core completes, if directly by bent axle
Room, cylinder holes connect into an entirety, because can not exit annular movable block without yielding space；And for annular activity
Block exits conveniently, by the way of the cylinder holes core using axle room core and bottom makes and then again combines core respectively, this side
Formula improves connection, combination number, particularly crankshaft room and the main core portion of cylinder holes two of the single part of single core
The error of more, then composition marine diesel airframe components the complete cores of its combination number of part will be bigger, is so difficult to
Ensure the mutual position of 10 crankshaft room, 20 cylinder holes, 20 water channel holes (water channel hole that 4.1 positions in Fig. 3 are formed)
And accuracy of gauge.
The content of the invention
The present invention is directed to the above-mentioned deficiency of prior art, there is provided one kind positioning and dimensional accuracy are preferable, and error is small, is easy to
The production method of the marine diesel body core of realization.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of life of marine diesel body core
Production method, preparation process include：
(1) a core body is prepared first, and described core body includes crankshaft room's core on top with
Two cylinder holes cores of two cylinder holes cores in portion, described crankshaft room's core and bottom are formed in one structure and two cylinders
Hole core is circumferentially provided with four binding faces being radially-inwardly recessed；
(2) four parts will be divided into positioned at binding face position, to form the position of complete cylinder holes core, respectively
One small core, the second small core, the 3rd small core, the 4th small core；The lateral wall of the first described small core is provided with outwards
(extension herein is the water channel to form final marine diesel body to the extension for extending and being fitted with crankshaft room core
Hole)；
(3) a set unification locator card sheet frame in the side wall of crankshaft room's core, the bottom of locator card sheet frame are provided with accommodating
The neck of first small core extension；During assembling, the first small core fitting is bonded on a binding face and then will determined first
Position clamp frame is sleeved in the side wall of crankshaft room's core, and the neck of locator card sheet frame is snapped into the extension of the first small core
On, realize the Dual positioning of the first small core；Then it is close to the first small core and the fitting of the second core is bonded in a fitting
On face, then the 3rd small core, the 4th small core fitting are bonded on corresponding binding face respectively；Now form complete peculiar to vessel
Diesel-engine body core；
(4) after the first small core, the second small core, the 3rd small core, the 4th small core are firmly bonded, locator card is removed
Sheet frame.
Preferably, be provided with locating slot on four described binding faces, corresponding first small core, the second small core,
3rd small core, the 4th small core contact surface on be provided with locating piece, during installation, the lateral wall of described locating piece and positioning
The madial wall of groove is bonded to each other；Using the structure, the fitting area of four binding faces and four small cores is added, adds jail
Gu degree and the accuracy of positioning, in addition, the position of small core can also be accurately positioned at core body by the setting of the structure
On, improve the dimensional accuracy of whole core.
Preferably, it is provided with the first described small core, the second small core, the 3rd small core, the 4th small core pre-
Box out, the connector for connecting small core and core body is installed in described preformed hole；Such as the connector such as iron nail；Adopt
With the structure, the degree of being connected firmly between four small core and core body is further enhanced, prevents four small core from position occurs
Shifting or inconsistent phenomenon.
When the small core of the present invention assembles with binding face, the upper figure of contact surface between the two is coated with adhesive, improves two
The degree of being connected firmly of person.
The core of the present invention makes and core material is industry conventional material and process, will not be repeated here, this
The inventive point of innovation and creation is two cylinder holes cores of crankshaft room's core and bottom being integrally formed, and unconventional difference
Making assembles again；Another creative inventive point of the invention is the circumferential outline of cylinder holes core being divided into four small sand
Core, then assembled again.
The advantages of the present invention are：The present invention in view of the concrete structure of core, eliminate crankshaft room's core,
The main core of cylinder holes core two is fabricated separately, plays core combination can be because the inaccurate and caused dimensional discrepancy of integrated positioning again；From
And reduce the factor of the position deviation for causing 10 crankshaft room, 20 cylinder holes, 20 water channel holes mutual and dimensional discrepancy,
Therefore, 10 crankshaft room, 20 cylinder holes, 20 water channel holes mutual phase are also ensured that while core overall dimensions are ensured
To positions and dimensions.In addition, the circumferential outline of cylinder holes core is divided into four small cores by the present invention, group is then carried out again
Dress, now, the punishment that concaves separates out from the footpath that four binding faces are formed for annular movable block can on core body
Come, and four small cores herein do not interfere with the accuracy to size between core body, and what is more important is using multiple
Fixed and positioning mode ensure that the fastness and accuracy of four small core positioning and bonding.
Brief description of the drawings
Fig. 1 is the core body construction schematic diagram (not assembling four small cores) of the present invention.
Fig. 2 is sand core structure schematic diagram of the present invention (setting four small cores).
Fig. 3 is the first small sand core structure schematic diagram of the invention.
Fig. 4 is the second small sand core structure schematic diagram of the invention.
Fig. 5 is the 3rd small sand core structure schematic diagram of the invention.
Fig. 6 is the 4th small sand core structure schematic diagram of the invention.
Fig. 7 is locating clamp plate mount structure schematic diagram of the present invention.
Fig. 8 is the arbor structural representation that the present invention is located at sand core internal.
Embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Embodiment
(1) arbor 9 and locator card sheet frame 8 are made according to design size and shape first；The structure of the arbor such as institute of accompanying drawing 8
Show, the structure of locator card sheet frame is as shown in Figure 7；Then arbor is positioned over to the center of core, use filling consolidation
Mode is by the uniform core sand of batch mixing being filled into core box successively (inside dimension of core box and the core body designed by accompanying drawing 1
Size matches), core sand is mainly mixed using sand, binding agent (furane resins) and curing agent, and now make for sand
Core body, concrete structure is as shown in Figure 1：Two cylinder holes cores 2 of crankshaft room's core 1 and bottom including top, two cylinders
The termination of hole core is (the specific symmetrical bottom for being arranged at crankshaft room's core of two cylinder holes cores, and two of core print 3
Core print is connected to the lower end of two cylinder holes cores)；And two cylinder holes cores 2 are circumferentially provided with four patches being radially-inwardly recessed
Conjunction face 2.1；The step ensure that two cylinder holes cores of crankshaft room's core and bottom are formed in one and form, and be embedded in core sand
In annular movable block can now be taken out downwards from the fitting being radially-inwardly recessed；
(2) using the same technique of step (1), prepared according to design size and fill up four binding faces to form complete sand
The four small core (small sand core internal herein is without arbor) of core is respectively the first small core 4, the second small core the 5, the 3rd
Small core 6, the 4th small core 7；As seen in figures 3-6, first as described in accompanying drawing 3 is small for the Structure Figure of specific four small cores
The lateral wall of core is provided with the extension 4.1 for stretching out and being fitted with crankshaft room core；
(3) taken out after the solidification of core body out of core box, then will carry out group between four small core and core body
Dress；During assembling, the first small core fitting is bonded on a binding face and then locator card sheet frame is sleeved on into crankshaft room first
In the side wall of core；The bottom of locator card sheet frame is provided with neck 8.1, the size of the neck and the first small sand as shown in Figure 7
The cross sectional dimensions of the extension of core matches (extension card knot is realized into positioning in neck), by locator card sheet frame
Neck is snapped on the extension of the first small core, realizes the Dual positioning of the first small core；Then being close to the first small core will
The fitting of second core is bonded on a binding face, then is respectively bonded in the 3rd small core, the 4th small core fitting accordingly
On binding face；Now form complete marine diesel body core；
(4) after the first small core, the second small core, the 3rd small core, the 4th small core are firmly bonded, locator card is removed
Sheet frame.
As shown in Figure 1, be provided with locating slot 2.2 on four binding faces, corresponding first small core, the second small core,
3rd small core, the 4th small core contact surface on be provided with locating piece, specifically by taking Fig. 3 as an example, be provided with the first small core
Locating piece 4.2；During installation, the lateral wall of described locating piece and the madial wall of locating slot are bonded to each other；Using the structure, increase
The fitting areas of four binding faces and four small cores, the accuracy of firmness and positioning is improved, in addition, the structure
The position of small core can also be accurately positioned on core body by setting, improve the dimensional accuracy of whole core.
In order to further enhance the degree of being connected firmly between four small core and core body, prevent four small core from occurring
Displacement or inconsistent phenomenon；Described the first small core, the second small core, the 3rd small core, be provided with the 4th small core it is reserved
Hole, the connector for connecting small core and core body is installed in described preformed hole；Such as the connector such as iron nail；In figure
It is not shown.
When the small core of the present invention assembles with binding face, adhesive is coated with contact surface between the two, improves the two
Degree of being connected firmly, as Linan Xing Modeling Materials Co., Ltd produce LZD pasting of core agent.
The core of the present invention makes and core material is industry conventional material and process, will not be repeated here, this
The inventive point of innovation and creation is two cylinder holes cores of crankshaft room's core and bottom being integrally formed, and unconventional difference
Making assembles again；Another creative inventive point of the invention is the circumferential outline of cylinder holes core being divided into four small sand
Core, then assembled again.
The material of the locator card sheet frame of the present invention can select the light materials such as aluminium alloy.Pass through above-mentioned sand core positioning structure
Implementation, eliminate crankshaft room's core, cylinder holes core is fabricated separately and positions lower core by simple core print and caused deviations
And dimensional discrepancy, solve 10 crankshaft room, 20 cylinder holes, 20 water channel holes mutual position deviation and dimensional discrepancy.
Claims (4)
- A kind of 1. production method of marine diesel body core, it is characterised in that：Preparation process includes：（1）A core body is prepared first, a crankshaft room core and bottom of the described core body including top Two cylinder holes cores of two cylinder holes cores, described crankshaft room's core and bottom are formed in one structure and two cylinder holes sand Core is circumferentially arranged four binding faces being radially-inwardly recessed；（2）Four parts will be divided into positioned at binding face position, to form the position of complete cylinder holes core, respectively first is small Core, the second small core, the 3rd small core, the 4th small core；The lateral wall of the first described small core, which is provided with, to stretch out And the extension to be fitted with crankshaft room core；（3）The set unification locator card sheet frame in the side wall of crankshaft room's core, the bottom of locator card sheet frame is provided with accommodating first The neck of small core extension；During assembling, the first small core fitting is bonded on a binding face and then by locator card first Sheet frame is sleeved in the side wall of crankshaft room's core, and the neck of locator card sheet frame is snapped on the extension of the first small core, real The Dual positioning of existing first small core；Then it is close to the first small core and the second small core fitting is bonded in a binding face On, then the 3rd small core, the 4th small core fitting are bonded on corresponding binding face respectively；Now form complete bavin peculiar to vessel Oil machine body core；（4）After the first small core, the second small core, the 3rd small core, the 4th small core are firmly bonded, locator card sheet frame is removed .
- 2. the production method of marine diesel body core according to claim 1, it is characterised in that：Four described patches Locating slot, corresponding first small core, the second small core, the 3rd small core, the contact surface of the 4th small core are provided with conjunction face On be provided with locating piece, during installation, the lateral wall of described locating piece and the madial wall of locating slot are bonded to each other.
- 3. the production method of marine diesel body core according to claim 1, it is characterised in that：Described first is small Core, the second small core, the 3rd small core, preformed hole is provided with the 4th small core, be provided with and be used in described preformed hole Connect the connector of small core and core body.
- 4. the production method of marine diesel body core according to claim 1, it is characterised in that：The small core with When binding face assembles, adhesive is coated with contact surface between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610626792.2A CN106040988B (en) | 2016-08-03 | 2016-08-03 | The production method of marine diesel body core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610626792.2A CN106040988B (en) | 2016-08-03 | 2016-08-03 | The production method of marine diesel body core |
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| CN106040988A CN106040988A (en) | 2016-10-26 |
| CN106040988B true CN106040988B (en) | 2017-11-17 |
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| CN201610626792.2A Active CN106040988B (en) | 2016-08-03 | 2016-08-03 | The production method of marine diesel body core |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106670394B (en) * | 2017-01-20 | 2018-08-10 | 百色学院 | A kind of diesel engine main body sand core |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6054243A (en) * | 1983-09-06 | 1985-03-28 | Nissan Motor Co Ltd | Core for producing engine cylinder block |
| FR2891019A1 (en) * | 2005-09-19 | 2007-03-23 | Renault Sas | Production of an internal combustion casing with an integration of lubricating fluid cooling system alongside the engine cooling system for efficient heat exchange across a common wall |
| DE102006017922A1 (en) * | 2006-04-18 | 2007-10-25 | Audi Ag | Mold block for serial casting of workpieces |
| CN102371342B (en) * | 2010-08-17 | 2013-07-24 | 广西玉柴机器股份有限公司 | Casting sand core unit, exterior appearance and casting method of diesel engine body |
| CN110253002B (en) * | 2012-11-27 | 2022-07-15 | 康明斯公司 | Stabilized engine casting core assembly |
| CN103121082B (en) * | 2013-01-24 | 2015-04-08 | 宁波亿泰来模具有限公司 | V8 type gray cast iron cylinder body casting pouring method |
| CN104741540B (en) * | 2015-03-31 | 2016-10-12 | 安徽江淮汽车股份有限公司 | Motor cylinder casting core, core structure, casting method and engine cylinder-body |
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