CN106040988A - Production method of diesel engine body sand core for ships - Google Patents
Production method of diesel engine body sand core for ships Download PDFInfo
- Publication number
- CN106040988A CN106040988A CN201610626792.2A CN201610626792A CN106040988A CN 106040988 A CN106040988 A CN 106040988A CN 201610626792 A CN201610626792 A CN 201610626792A CN 106040988 A CN106040988 A CN 106040988A
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- Prior art keywords
- core
- little
- little core
- sand core
- production method
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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
The invention provides a production method of a diesel engine body sand core for ships. The production method comprises: a sand core body is firstly prepared, wherein the sand core body comprises one crankshaft cavity sand core at the upper part and two cylinder hole sand cores at the lower part, the crankshaft cavity sand core and the two cylinder hole sand cores at the lower part are integrated, and four radial internally sunken binding faces are circumferentially arranged on the two cylinder hole sand cores; parts, located at the binding faces, of the complete cylinder hole sand core are divided into four parts; a positioning clamping plate frame sleeves the side wall of the crankshaft cavity sand core, and a clamping groove for accommodating a first small sand core extension part is formed in the lower part of the positioning clamping plate frame; four parts are bound on the binding faces to form a complete diesel engine body sand core for the ships; and after the four parts are bound firmly, the positioning clamping plate frame is removed, thereby obtaining the diesel engine body sand core for the ships. The production method of the diesel engine body sand core for the ships has the advantages that positioning and size accuracy are relatively better, errors are small, and the production method is easy to implement.
Description
Technical field
The present invention relates to casting field, in particular relate to the production method of a kind of marine diesel body core.
Background technology
The marine diesel oil machine host most of the time is to work under full load situation, sometimes operates in the case of varying duty,
And boats and ships often navigate by water in jolting, so marine diesel should be able to be under conditions of trim 15 °-25 ° and heel 15 °-35 °
Reliably working.And as the frame of main element, it is the skeleton of electromotor, it is the basis of electromotor each mechanism work, bears
The various loads of electromotor, only rack unit have sufficiently high rigidity and intensity just can ensure that each mechanism of electromotor is long-term just
Often work.
Rack unit basal body structure is complicated, and wall thickness variation is big, and cavity shape is irregular, and casting mold is by more than 20 kinds of core combinations
Becoming, core positions not brigadier and causes the skew of whole casting section thickness to be scrapped, and therefore, the design of sand core structure location is in castings production
In there is highly important status, size, the wall thickness of foundry goods are had a great impact by the design of sand core structure location, rational sand
The design of cored structure location is the key producing thin-walled diesel-engine body foundry goods.
Core belongs to parts relatively common in casting field, and the structure of core, size and core are fixed according to actual needs
Position is the most all not quite similar, conventional core location, it is only necessary to simple molding core print in a mold can use, and for some
Combined casting mold by a variety of cores, its core is accomplished by considering the accuracy that combination core positions, to avoid because of core
Position and inaccurate cause mould dimension not to be inconsistent and produce the deficiency of product rejection；Different cores may require that different location structure,
Such as: the marine diesel airframe components that applicant produces, these parts have 10 crankshaft room, 20 cylinder holes, 20 water channel holes,
Need minimum ten cores just can complete；The concrete structure of each core is as shown in Figure 2: include crankshaft room's core on top
With the cylinder holes core of bottom, conventional core combination 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 one overall
Core, the annular space formed between the crankshaft room produced owing to crankshaft room downwardly extends and cylinder holes needs when designing core shell
This position is provided with annular movable block, and after core completes, annular movable block needs to remove, if directly by bent axle
Room, cylinder holes connect into an entirety, because being exited by annular movable block without yielding space；And in order to annular is movable
Block exits conveniently, uses the mode that the cylinder holes core of axle room core and bottom makes respectively, combined by core, this side
Formula improves the connection of the single parts of single core, combines the core portion that number of times, particularly crankshaft room and cylinder holes two is main
The error of the complete core that part a combination thereof number of times is the most, then constitute marine diesel airframe components will be the biggest, is thus difficult to
Guarantee 10 crankshaft room, 20 cylinder holes, 20 water channel holes (water channel holes that 4.1 positions in Fig. 3 are formed) position each other
And accuracy of gauge.
Summary of the invention
The present invention is directed to the above-mentioned deficiency of prior art, it is provided that a kind of location and dimensional accuracy are preferable, error is little, be prone to
The production method of the marine diesel body core realized.
For solving above-mentioned technical problem, the technical solution used in the present invention is: the life of a kind of marine diesel body core
Product method, preparation process includes:
(1) first prepare a core body, described core body include top crankshaft room's core and under
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 radially-inwardly caved in；
(2) will be located in binding face position, be divided into four parts in order to constituting the position of complete cylinder holes core, respectively
One little core, the second little core, the 3rd little core, the 4th little core；The lateral wall of the first described little core is provided with outwards
(extension herein is the water channel forming final marine diesel body to the extension extended and fit with crankshaft room core
Hole)；
(3) set unification locator card sheet frame on the sidewall of crankshaft room's core, the bottom of locator card sheet frame is provided with accommodating
The draw-in groove of the first little core extension；During assembling, first the first little core laminating is bonded on a binding face, then will determine
Position card sheet frame is sleeved on the sidewall of crankshaft room's core, and the draw-in groove of locator card sheet frame snaps into the extension of the first little core
On, it is achieved the Dual positioning of the first little core；Then it is close to the first little core and the second core laminating is bonded in a laminating
On face, more respectively the 3rd little core, the 4th little core laminating are bonded on corresponding binding face；Now constitute complete peculiar to vessel
Diesel-engine body core；
(4) after the first little core, the second little core, the 3rd little core, the 4th little core are firmly bonded, locator card is removed
Sheet frame.
As preferably, four described binding faces are provided with locating slot, corresponding the first little core, the second little core,
3rd little core, the 4th little core contact surface on be provided with locating piece, during installation, the lateral wall of described locating piece and location
The medial wall of groove is bonded to each other；Use this structure, add four binding faces and the fitting area of four little cores, add jail
Gu degree and the accuracy of location, additionally, the position of little core can also be positioned at core body by the setting of this structure accurately
On, improve the dimensional accuracy of whole core.
As preferably, described the first little core, the second little core, the 3rd little core, the 4th little core are provided with pre-
Box out, the connector for connecting little core and core body is installed in described preformed hole；The connectors such as such as iron nail；Adopt
Use this structure, further enhance the degree of being connected firmly between four little cores and core body, prevent four little cores from position occurring
Move or inconsistent phenomenon.
When the little core of the present invention assembles with binding face, the upper figure of contact surface between the two is coated with binding agent, 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, does not repeats them here, this
The inventive point of innovation and creation is that two cylinder holes cores by crankshaft room's core and bottom are one-body molded, and unconventional difference
Make and assemble again；The inventive point of another creativeness of the present invention is the circumferential outline of cylinder holes core is divided into four little sand
Core, assembles the most again.
Advantages of the present invention and having the beneficial effects that: the present invention in view of the concrete structure of core, eliminate crankshaft room's core,
The dimensional discrepancy that two main cores of cylinder holes core are fabricated separately, play core combination can produce because integrated positioning is inaccurate again；From
And decrease and cause 10 crankshaft room, 20 cylinder holes, 20 water channel holes position deviation each other and the factor of dimensional discrepancy,
Therefore, ensureing to also ensure that while core overall dimensions 10 crankshaft room, 20 cylinder holes, 20 water channel holes phase each other
To positions and dimensions.It addition, the circumferential outline of cylinder holes core is divided into four little cores by the present invention, carry out group the most again
Dress, now, the annular movable block being positioned on the core body punishment that just can concave from the footpath of four binding faces compositions separates out
Coming, and four little cores herein do not interfere with the accuracy to size between core body, what is more important uses multiple
Fixing and location mode ensure that four little core location and the fastness of bonding and accuracy.
Accompanying drawing explanation
Fig. 1 is the core body construction schematic diagram (not assembling four little cores) of the present invention.
Fig. 2 is sand core structure schematic diagram of the present invention (arranging four little cores).
Fig. 3 is the present invention first little sand core structure schematic diagram.
Fig. 4 is the present invention second little sand core structure schematic diagram.
Fig. 5 is the little sand core structure schematic diagram of the present invention the 3rd.
Fig. 6 is the little sand core structure schematic diagram of the present invention the 4th.
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 positioned at sand core internal.
Detailed description of the invention
The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings.
Embodiment
(1) first arbor 9 and locator card sheet frame 8 are made according to design size and shape；The structure of arbor such as accompanying drawing 8 institute
Showing, the structure of locator card sheet frame is as shown in Figure 7；Then arbor is positioned over the center of core, uses and fill consolidation
Mode is by uniform for batch mixing core sand being filled in core box successively (inside dimension of core box and the core body designed by accompanying drawing 1
Size matches), core sand mainly uses sand, binding agent (furane resins) and firming agent to mix, and now make for sand
Core body, concrete structure as shown in Figure 1: include crankshaft room's core 1 on top and two cylinder holes cores 2 of bottom, two cylinders
The termination of hole core is core print 3 (the concrete symmetrical bottom being arranged at crankshaft room's core of two cylinder holes cores, and two
Core print is connected to the lower end of two cylinder holes cores)；And two cylinder holes core 2 circumferences are provided with four patches radially-inwardly caved in
Conjunction face 2.1；This step ensure that two cylinder holes cores of crankshaft room's core and bottom are formed in one and forms, and is embedded in core sand
In annular movable block now can take out downwards from the binding face radially-inwardly caved in；
(2) use the technique that step (1) is same, prepare according to design size and fill up four binding faces to constitute complete sand
Four little cores (little sand core internal herein is without arbor) of core are i.e. respectively first little core the 4, second little core the 5, the 3rd
The little core 7 of little core the 6, the 4th；As seen in figures 3-6, first as described in accompanying drawing 3 is little for the Structure Figure of four concrete little cores
The lateral wall of core is provided with the extension 4.1 stretching out and fitting with crankshaft room core；
(3) take out in core box after core body solidifies, then will carry out group between four little cores and core body
Dress；During assembling, first the first little core laminating is bonded on a binding face, then locator card sheet frame is sleeved on crankshaft room
On the sidewall of core；The bottom of locator card sheet frame is provided with draw-in groove 8.1 as shown in Figure 7, the size of this draw-in groove and the first little sand
The cross sectional dimensions of the extension of core matches (realizing location in draw-in groove in order to will extend over portion's card knot), by locator card sheet frame
Draw-in groove snaps on the extension of the first little core, it is achieved the Dual positioning of the first little core；Then being close to the first little core will
Second core laminating is bonded on a binding face, then is bonded in corresponding by the 3rd little core, the 4th little core laminating respectively
On binding face；Now constitute complete marine diesel body core；
(4) after the first little core, the second little core, the 3rd little core, the 4th little core are firmly bonded, locator card is removed
Sheet frame.
As shown in Figure 1, four binding faces are provided with locating slot 2.2, corresponding the first little core, the second little core,
3rd little core, the 4th little core contact surface on be provided with locating piece, specifically as a example by Fig. 3, the first little core is provided with
Locating piece 4.2；During installation, the lateral wall of described locating piece is bonded to each other with the medial wall of locating slot；Use this structure, increase
Four binding faces and the fitting area of four little cores, improve the accuracy of firmness and location, additionally, this structure
The position of little core can also be positioned on core body by setting accurately, improves the dimensional accuracy of whole core.
In order to further enhance the degree of being connected firmly between four little cores and core body, prevent four little cores from occurring
Displacement or inconsistent phenomenon；It is provided with reserved on described the first little core, the second little core, the 3rd little core, the 4th little core
Hole, is provided with the connector for connecting little core and core body in described preformed hole；The connectors such as such as iron nail；In figure
Not shown.
When the little core of the present invention assembles with binding face, contact surface between the two is coated with binding agent, improves the two
Degree of being connected firmly, as Linan Xing Modeling Material company limited produce LZD pasting of core agent.
The core of the present invention makes and core material is industry conventional material and process, does not repeats them here, this
The inventive point of innovation and creation is that two cylinder holes cores by crankshaft room's core and bottom are one-body molded, and unconventional difference
Make and assemble again；The inventive point of another creativeness of the present invention is the circumferential outline of cylinder holes core is divided into four little sand
Core, assembles the most again.
The material of the locator card sheet frame of the present invention can be with light materials such as aluminium alloys.By above-mentioned sand core positioning structure
Enforcement, eliminate crankshaft room's core, cylinder holes core is fabricated separately the deviations produced by the lower core in simple core print location
And dimensional discrepancy, solve 10 crankshaft room, 20 cylinder holes, 20 water channel holes position deviation each other and dimensional discrepancy.
Claims (4)
1. the production method of a marine diesel body core, it is characterised in that: preparation process includes:
(1) first preparing a core body, described core body includes crankshaft room's core on top and bottom
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 radially-inwardly caved in；
(2) will be located in binding face position, be divided into four parts in order to constituting the position of complete cylinder holes core, respectively first is little
Core, the second little core, the 3rd little core, the 4th little core；The lateral wall of the first described little core is provided with and stretches out
And the extension fitted with crankshaft room core；
(3) set unification locator card sheet frame on the sidewall of crankshaft room's core, the bottom of locator card sheet frame is provided with accommodating first
The draw-in groove of little core extension；During assembling, first the first little core laminating is bonded on a binding face, then by locator card
Sheet frame is sleeved on the sidewall of crankshaft room's core, and is snapped into by the draw-in groove of locator card sheet frame on the extension of the first little core, real
The Dual positioning of existing first little core；Then it is close to the first little core the second core laminating to be bonded on a binding face,
The most respectively the 3rd little core, the 4th little core laminating are bonded on corresponding binding face；Now constitute complete marine diesel oil
Machine body core；
(4) after the first little core, the second little core, the 3rd little core, the 4th little core are firmly bonded, locator card sheet frame is removed
?.
The production method of marine diesel body core the most according to claim 1, it is characterised in that: four described patches
Locating slot, the first little core of correspondence, the second little core, the 3rd little core, the contact surface of the 4th little core it is provided with on conjunction face
On be provided with locating piece, during installation, the lateral wall of described locating piece is bonded to each other with the medial wall of locating slot.
The production method of marine diesel body core the most according to claim 1, it is characterised in that: described first is little
Be provided with preformed hole on core, the second little core, the 3rd little core, the 4th little core, be provided with in described preformed hole for
Connect the connector of little core and core body.
The production method of marine diesel body core the most according to claim 1, it is characterised in that: described little core with
When binding face assembles, contact surface between the two is coated with binding agent.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106040988A true CN106040988A (en) | 2016-10-26 |
| CN106040988B CN106040988B (en) | 2017-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610626792.2A Active CN106040988B (en) | 2016-08-03 | 2016-08-03 | The production method of marine diesel body core |
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| Country | Link |
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| CN (1) | CN106040988B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670394A (en) * | 2017-01-20 | 2017-05-17 | 百色学院 | Diesel engine main body sand core |
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| 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 |
| WO2007121875A1 (en) * | 2006-04-18 | 2007-11-01 | Audi Ag | Moulding block for series-casting of workpieces |
| CN102371342A (en) * | 2010-08-17 | 2012-03-14 | 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 |
| CN103121082A (en) * | 2013-01-24 | 2013-05-29 | 宁波亿泰来模具有限公司 | V8 type gray cast iron cylinder body casting pouring method |
| CN104741540A (en) * | 2015-03-31 | 2015-07-01 | 安徽江淮汽车股份有限公司 | Engine cylinder casting sand core, mould core structure, casting method and engine cylinder |
| CN104812511A (en) * | 2012-11-27 | 2015-07-29 | 卡明斯公司 | Stabilized engine casting core assembly |
-
2016
- 2016-08-03 CN CN201610626792.2A patent/CN106040988B/en active Active
Patent Citations (7)
| 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 |
| WO2007121875A1 (en) * | 2006-04-18 | 2007-11-01 | Audi Ag | Moulding block for series-casting of workpieces |
| CN102371342A (en) * | 2010-08-17 | 2012-03-14 | 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 |
| CN104812511A (en) * | 2012-11-27 | 2015-07-29 | 卡明斯公司 | Stabilized engine casting core assembly |
| CN103121082A (en) * | 2013-01-24 | 2013-05-29 | 宁波亿泰来模具有限公司 | V8 type gray cast iron cylinder body casting pouring method |
| CN104741540A (en) * | 2015-03-31 | 2015-07-01 | 安徽江淮汽车股份有限公司 | Engine cylinder casting sand core, mould core structure, casting method and engine cylinder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670394A (en) * | 2017-01-20 | 2017-05-17 | 百色学院 | Diesel engine main body sand core |
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| CN106040988B (en) | 2017-11-17 |
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