CN104741540B - Motor cylinder casting core, core structure, casting method and engine cylinder-body - Google Patents
Motor cylinder casting core, core structure, casting method and engine cylinder-body Download PDFInfo
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- CN104741540B CN104741540B CN201510149407.5A CN201510149407A CN104741540B CN 104741540 B CN104741540 B CN 104741540B CN 201510149407 A CN201510149407 A CN 201510149407A CN 104741540 B CN104741540 B CN 104741540B
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Abstract
The invention provides a kind of motor cylinder casting core, including the first core body, described first core body has the first weak point, described first weak point has the first moulding face and the first non-moulding face, and described first non-moulding facings the both sides of described first core body and stretches out formation protuberance.Present invention also offers a kind of motor cylinder casting core structure, a kind of motor cylinder casting method and a kind of engine cylinder-body.The present invention can solve the problem that core deformation and the problem of fracture during motor cylinder casting.
Description
Technical field
The present invention relates to electromotor casting field, be specifically related to motor cylinder casting core, core structure, casting method
And engine cylinder-body.
Background technology
Cylinder body is the skeleton of electromotor, and the element of each parts and aid system will be arranged on cylinder body.In order to protect
Card cylinder body works under bearing the complex stress condition such as stretch bending and vibration, and intensity, the rigidity of cylinder body is had the highest requirement.
As it is shown in figure 1, the design of engine cylinder-body 100 uses tower structure substantially, the most mostly use at cylinder body
The left and right sides is distributed oil back chamber 110 and upper gas chamber 120, and is disposed with main oil gallery at the middle part upper position of oil back chamber 110
130.On the one hand the lubricating oil of cylinder cap returns to oil sump by oil back chamber 110, and on the other hand crank case gases passes through upper gas chamber 120
Arrive gs-oil separator.
This structure not only achieves the function of cylinder cap oil return and crank case vent, and the rigidity and intensity to cylinder body plays
Booster action, reduces the deformation of cylinder body, enables cylinder body to bear higher detonation pressure, meets performance and discharges constantly upgrading
Requirement.
As in figure 2 it is shown, as a example by the core 200 forming oil back chamber 110, this core 200 is longer, and for main oil gallery 130
Moulding, core body 200 formed main oil gallery position, i.e. at main oil gallery forming part 230 in Fig. 2, oil pocket core is relatively
Other position is thin, therefore defines a weak point, and is relative thick portion 240 in weak point both sides.At casting metal liquid
Time, the two ends of core 200 rely on fixed structure 210 and fixed structure 220 to fix.It is true that after casting metal liquid completes,
Molten iron main oil gallery to be filled forming part 230, but now there is no main oil gallery 130, main oil gallery 130 is at main oil gallery forming part 230
Molten steel solidification after formed by mach mode.Main oil gallery moulding face 231 becomes the forming surface after molten steel solidification, or
Say a part for the inner surface being oil back chamber 110.
With reference to Fig. 3, the forging type that in prior art, cylinder body 100 uses is: core 200 is horizontal, oil back chamber 110 down,
Upper gas chamber 120 upward, or upper gas chamber 120 down, oil back chamber 110 mode upward.As a example by former forging type, in cast
During metal liquid, owing to molten iron buoyancy f is very big, when casting, the weak point 230 of oil pocket core 200 is easily broken off.Even if
Oil back chamber core 200 does not ruptures at weak point 230, owing to current casting technique is for the fixed position of core 200
Being distributed in two ends, rely on fixed structure 210 and fixed structure 220 to fix, under ferrum buoyancy of water f effect, core 200 can become
Shape, outline is dashed line shape by the solid line change of shape in Fig. 3, causes the oil back chamber wall unevenness after casting even, to cylinder body
Rigidity and the intensity of 100 are unfavorable.
Prior art ruptures or core 200 problem on deformation, as shown in Figure 4, at weak point for solution weak point 230
Stud 300 is used to support core 200 to offset the impact of molten iron buoyancy f near 230.Stud 300 is supported on cylinder body external mold, waters
The note complete rear stud 300 of metal liquid stays a part for the outer wall forming cylinder body 100 in molten iron.
In actual casting metal liquid, owing to there are oil back chamber 110 or upper gas chamber in cylinder body 100 left and right sides in Fig. 1
120, then as it is shown in figure 5, the core 200 of top can use stud 300, and the side of lower section (near casting mould bottom surface) is adopted
The strong point cannot be found if stud, such as, need continuous print molten iron to fill between two cylinder holes 140, therefore cannot use
The method of stud offsets the impact on core 200 of the ferrum buoyancy of water, and then causes core 200 to deform, and cylinder body oil back chamber wall thickness is not
All, the problem that even core 200 ruptures due to molten iron buoyancy in casting process, have a strong impact on productive temp and finished product
Rate, causes the increase of man-hour and cost.It is to say, use stud method cannot thoroughly solve casting time core deformation and
The problem of fracture.
Summary of the invention
Present invention aim to address core deformation and the problem of fracture during motor cylinder casting, for this present invention
Embodiment provide following technical scheme:
A kind of motor cylinder casting core, including the first core body, it is weak that described first core body has first
Portion, described first weak point has the first moulding face and the first non-moulding face, and described first non-moulding facings described first sand
Formation protuberance is stretched out in the both sides of core body.
Preferably, described first weak point is the main oil gallery forming part of engine cylinder-body, and described first moulding face is main oil
Moulding face, road.
Preferably, described first core body also has at least two thickness portion, and described first weak part is in described in two
Between thickness portion, and described thickness portion is continuous print integrative-structure with described first weak point.
Preferably, described first core body is arranged side by side multiple, by described convex between the first adjacent core body
Portion connects.
Preferably, described first core body is used for oil back chamber or the molding of upper gas chamber.
A kind of motor cylinder casting core structure, including motor cylinder casting core as above, cylinder holes core, institute
Stating the first core body two ends to be fixed, described cylinder holes core is provided with recess, described recess and described protuberance in crankcase shaping sector
Shape complementarity, described first core body is horizontal below described cylinder holes core and described recess and described protuberance are fitted.
Preferably, above-mentioned cylinder casting core structure, also include stud and the second core body, described second core body
Having the second weak point, described second core body is horizontal above described cylinder holes core, and described chaplet is described second thin
Above weak portion.
A kind of motor cylinder casting method, including:
Build motor cylinder casting core structure as above in a mold；
Casting metal liquid；
Sand removal and remove cylinder holes core, described protuberance position forms the opening of connection oil back chamber or upper gas chamber and crankcase.
Preferably, when component motor cylinder casting core structure, also use stud and the second core body, described the
Two core bodies are horizontal above described cylinder holes core, and described chaplet is above described second weak point.
There is connecting with crankcase of casting formation in a kind of engine cylinder-body, the oil back chamber of described engine cylinder-body or upper gas chamber
Logical opening.
The present invention utilizes the protuberance stretched out on the first non-moulding face of the first weak point of core, strengthens weak point
Weight, and this protuberance does not affect the normal molding of main oil gallery position, and in casting, first with recess and the sand of cylinder holes core
The laminating of the protuberance of core, utilizes the crankcase shaping sector of cylinder holes core to press down the protuberance of core, and secondly the weight of protuberance itself can
Reduce the adverse effect of molten iron buoyancy so that the weak point of core can not upwards deform upon.And after having cast, Jing Guoqing
Sand, owing to protuberance is fallen clearly, naturally form the opening of a connection upper gas chamber formed because of casting or oil back chamber and crankcase,
This opening can be simpler as the blow vent of crankcase, casting technique, ventilates more smooth and easy.
Accompanying drawing explanation
Next the specific embodiment of the present invention is described in further detail combining accompanying drawing, wherein:
Fig. 1 is the axonometric chart of a kind of typical engine cylinder-body；
Fig. 2 is the axonometric chart of the core of prior art；
Fig. 3 is the oil back chamber casting metal liquid process schematic of prior art；
Oil back chamber casting metal liquid process schematic when Fig. 4 is to use stud in prior art；
Fig. 5 is motor cylinder casting core structure figure in prior art；
Fig. 6 is the axonometric chart of the first core body of first embodiment of the present invention；
Fig. 7 is the front view of the first core body of first embodiment of the present invention；
Fig. 8 is the axonometric chart of the first core body of second embodiment of the present invention；
Fig. 9 is the motor cylinder casting core structure figure of embodiments of the invention；
Figure 10 is the axonometric chart of the engine cylinder-body using the core of prior art and core to cast out；
Figure 11 is the axonometric chart of the engine cylinder-body using the core of embodiments of the invention and core to cast out.
Description of symbols in figure: 100, engine cylinder-body, 110, oil back chamber, 120, upper gas chamber, 130, main oil gallery, 140, cylinder
Hole, 150, crankcase, 200, core, 210, fixed structure, 220, fixed structure, 230, weak point, 231, main oil gallery moulding face,
240, thickness portion, 300, stud, the 400, first core body, the 410, first weak point, the 411, first moulding face, 412, first non-makes
Profile, 420, thickness portion, 430, protuberance, the 500, second core body, the 510, second weak point, 600, cylinder holes core, 610, cylinder holes makes
Type portion, 620, crankcase shaping sector, 621, recess, 700, engine cylinder-body, 710, oil back chamber, 720, upper gas chamber, 740, cylinder holes,
750, crankcase, 760, opening.
Detailed description of the invention
In conjunction with Fig. 6 and Fig. 7, the motor cylinder casting core in the present embodiment, including the first core body 400, with Fig. 2
In core 200 identical, the first core body 400 has the first weak point 410, and the first weak point 410 has first and makes
Profile 411 and the first non-moulding face 412.Unlike the core 200 in Fig. 2, in the present embodiment, the first non-moulding face
Formation protuberance 430 is stretched out in the both sides of 412 towards first core bodies 400.The first core body 400 oil back chamber in Fig. 1
110 or the molding of upper gas chamber 120.As a example by molding for oil back chamber 110, the first weak point of the first core body 400
410 is the main oil gallery forming part of engine cylinder-body, should be partially due to need for the main oil gallery processing after having cast reserved more
Metal material, therefore the remainder of relatively the first core body 400 is weak, and for relative first weak point 410, the first sand
Core body 400 has two thick portions 420 of relative thick, the first weak point 410 between two thick portions 420, the first weak point
410 and second weak point 420 be continuous print integrative-structure.In actual application, in order to coordinate other moulding of engine cylinder-body, also
Form other possibly also with the first weak point 410 and need the structure of reserved more metal material in casting process, and can
There is only one thickness portion 420.In the present embodiment, the first moulding face 411 is main oil gallery moulding face, after i.e. having cast, added
The main oil gallery 130 of work is the axial direction extension along the first moulding face 411.It practice, after sand removal, the first moulding face 411
Become the forming surface after molten steel solidification, or perhaps a part for the inner surface of oil back chamber 110.And the first non-moulding face 412 exists
Forming the side of the inwall of oil back chamber 110 after sand removal, this face is not related to the processing of main oil gallery 130, in other words, main oil gallery 130
Not through the metal material at the first non-moulding face 412.
With reference to Fig. 8, in the present embodiment, the first core body 400 is the first multiple, adjacent core body arranged side by side
Being connected by protuberance 430 between 400, this is when needs form multiple oil back chamber 110 or upper gas chamber 120, it is possible to make core
Layout convenient.
With reference to Fig. 9, the motor cylinder casting core structure in the present embodiment includes the electromotor in Fig. 6, Fig. 7 or Fig. 8
Cylinder casting core, cylinder holes core 600, stud 300 and the second core body 500.The structure of the second core body 500 can be with figure
Structure in 2 or Fig. 3 is identical, in order to make a distinction with the first core body 400, is claimed by the weak point of the second core body 500
It it is the second weak point 510.Cylinder holes core 600 has cylinder holes shaping sector 610 and crankcase shaping sector 620, and cylinder holes shaping sector 610 is used for
The molding of the cylinder holes 140 in Fig. 1, crankcase shaping sector 620 is for the molding of the crankcase of engine cylinder-body.Cylinder holes core 600 exists
Recess 621, recess 621 and protuberance 430 shape complementarity it is provided with at crankcase shaping sector 620.Building motor cylinder casting type
During core, similar with Fig. 2, the first core body 400 two ends are fixed, then by horizontal for the first core body 400 at cylinder holes core 600
Lower section, i.e. the length direction of the first core body 400 engine cylinder-body close to level, after having cast in other words, in Fig. 1
The oil back chamber 110 of the side of 100 is practically in lower section.The recess 621 of cylinder holes core 600 and the protuberance 430 of the first core body 400
Laminating.And the second core body 500 is horizontal above cylinder holes core 600, stud 300 is supported on above the second weak point 510.
In the present embodiment, the first core body 400 is used for casting formation oil back chamber, and the second core body 500 is used for casting
Appearance becomes upper gas chamber, but also is able in actual production use the first core body 400 to cast upper gas chamber.
After building motor cylinder casting core structure as shown in Figure 9 in casting mould, potting syrup in mould
Body metal, due to stretch out on the first non-moulding face 412 of the first weak point 410 of the first core body 400 being below
The existence of protuberance 430, makes the recess 621 of cylinder holes core 600 and the laminating of the protuberance 430 of the first core body 400, first poured into a mould
The crankcase shaping sector that can utilize cylinder holes core 600 in journey presses this protuberance 430 for 620 times so that buoyancy f can not make the first weak point
410 upwards deform upon, and secondly protuberance 430 makes the weight of the first weak point 410 be improved, the weight of protuberance 430 itself
Can reduce the adverse effect of the buoyancy of molten iron or other metal liquid, therefore during casting metal liquid, first is thin
Weak portion 410 is more difficult to deform upon or rupture.And for the second core body 500, for the support of stud 300, it is second thin
Weak portion 510 also will not deform upon or rupture.
Contrast Figure 10 and Figure 11.Wherein Figure 10 be by the engine cylinder-body 100 in Fig. 1 from bottom observable view.
In the prior art, after casting complete, through sand removal and remove core, oil back chamber 110 and cylinder holes 140, crankcase 150 molding,
And completely cut off by metal material between crankcase 150 and oil back chamber 110 or upper gas chamber 120.And in fig. 11, casting complete
After, through sand removal and remove core, cylinder holes core 600 is removed, and the position of the cylinder holes shaping sector 610 of cylinder holes core 600 forms cylinder holes
740, the position of crankcase shaping sector 620 forms crankcase 750, and engine cylinder-body 700 is at corresponding protuberance 430 and recess 621
The position of laminating, owing to protuberance 430 is fallen clearly together with whole first core body 400, is the formation of a connection oil return naturally
Chamber 710 and the opening 760 of crankcase 750.
In actual production, the upper gas chamber 720 of engine cylinder-body 700 also is able to use the first core body 400 to cast
Make, and after having cast, upper gas chamber 720 also is able to be formed and opening that crankcase 750 connects owing to protuberance 430 is cleaned out
Mouthfuls 760, this opening 760 as the blow vent of crankcase 750, and can make crank case gases pass through opening 760 to arrive oil gas and divide
From device, casting technique is simple.
Although the present invention combines above example and is described, but the present invention is not limited to above-described embodiment,
And only limited by claim, it easily can be modified and change by those of ordinary skill in the art, but not from
The essential idea of format invention and scope.
Claims (6)
1. a motor cylinder casting core structure, it is characterised in that include motor cylinder casting core, cylinder holes core, institute
State motor cylinder casting core and include that the first core body, described first core body have the first weak point, described first
Weak point has the first moulding face and the first non-moulding face, and described first non-moulding facings the both sides of described first core body
Stretching out formation protuberance, described first core body two ends are fixed, and described cylinder holes core is provided with recess in crankcase shaping sector, described
Recess and described lobe shape are complementary, and described first core body is horizontal below described cylinder holes core and described recess is convex with described
Portion fits, and motor cylinder casting core also includes stud and the second core body, and it is thin that described second core body has second
Weak portion, described second core body is horizontal above described cylinder holes core, and described chaplet is above described second weak point.
Motor cylinder casting core structure the most according to claim 1, it is characterised in that described first weak point is for sending out
The main oil gallery forming part of motivation cylinder body, described first moulding face is main oil gallery moulding face.
Motor cylinder casting core structure the most according to claim 1, it is characterised in that described first core body is also
Having at least two thickness portion, described first weak part is between two thick portions, and described thickness portion with described first weak point is
Continuous print integrative-structure.
Motor cylinder casting core structure the most according to claim 1, it is characterised in that described first core body is
Arranged side by side is multiple, is connected by described protuberance between the first adjacent core body.
5. according to the motor cylinder casting core structure described in any one in Claims 1-4, it is characterised in that described
First core body is used for oil back chamber or the molding of upper gas chamber.
6. a motor cylinder casting method, it is characterised in that including:
Build motor cylinder casting core structure as claimed in claim 1 in a mold；
Casting metal liquid；
Sand removal and remove cylinder holes core, described protuberance position forms the opening of connection oil back chamber or upper gas chamber and crankcase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510149407.5A CN104741540B (en) | 2015-03-31 | 2015-03-31 | Motor cylinder casting core, core structure, casting method and engine cylinder-body |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510149407.5A CN104741540B (en) | 2015-03-31 | 2015-03-31 | Motor cylinder casting core, core structure, casting method and engine cylinder-body |
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| CN104741540A CN104741540A (en) | 2015-07-01 |
| CN104741540B true CN104741540B (en) | 2016-10-12 |
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| CN106040988B (en) * | 2016-08-03 | 2017-11-17 | 日月重工股份有限公司 | The production method of marine diesel body core |
| CN106270400B (en) * | 2016-11-07 | 2017-10-10 | 江铃汽车股份有限公司 | A kind of elongated oil duct sand core structure of sleeping pouring technique cylinder body |
| CN106925720A (en) * | 2017-04-17 | 2017-07-07 | 大连旅桑实业有限公司 | A kind of sand mold mould for casting arm type casting long |
| CN112282958B (en) * | 2020-10-30 | 2022-01-21 | 东风汽车集团有限公司 | Oil return channel structure of high-pressure cast aluminum alloy cylinder body |
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| CN204584195U (en) * | 2015-03-31 | 2015-08-26 | 安徽江淮汽车股份有限公司 | Motor cylinder casting core, core structure and engine cylinder-body |
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| CN201474784U (en) * | 2009-08-31 | 2010-05-19 | 上海通用汽车有限公司 | Engine cylinder body |
| CN202291276U (en) * | 2011-10-19 | 2012-07-04 | 华东泰克西汽车铸造有限公司 | Sand core drying rack |
| CN202673469U (en) * | 2012-06-14 | 2013-01-16 | 杜达仁 | Diesel engine cylinder block structure |
| CN110253002B (en) * | 2012-11-27 | 2022-07-15 | 康明斯公司 | Stabilized engine casting core assembly |
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| CN204584195U (en) * | 2015-03-31 | 2015-08-26 | 安徽江淮汽车股份有限公司 | Motor cylinder casting core, core structure and engine cylinder-body |
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Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee after: ANHUI JIANGHUAI AUTOMOBILE GROUP Corp.,Ltd. Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee before: ANHUI JIANGHUAI AUTOMOBILE Co.,Ltd. |
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