CN103008557A - Casting core assembly of compressor casing and moulding method of same - Google Patents
Casting core assembly of compressor casing and moulding method of same Download PDFInfo
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- CN103008557A CN103008557A CN2012105504960A CN201210550496A CN103008557A CN 103008557 A CN103008557 A CN 103008557A CN 2012105504960 A CN2012105504960 A CN 2012105504960A CN 201210550496 A CN201210550496 A CN 201210550496A CN 103008557 A CN103008557 A CN 103008557A
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Abstract
The invention provides a casting core assembly of a compressor casing and a moulding method of the casting core assembly. The casting core assembly mainly comprises box allocating bottom cores, right side end surface reference mud cores, left side end surface closed mud cores, intermediate outer mould mud cores and inner cavity mud cores; the moulding method comprises the following steps: 1), mud cores, the intermediate outer mould mud cores and the inner cavity mud cores are formed by using a core box moulding manner; 2), axle center lines, box allocating reference lines and outer mould mud core position lines are made on the box allocating bottom cores; 3), on the box allocating reference lines made on the box allocating bottom cores, the positions of core allocating base staffs are determined by using measurement rods, the base staffs are mounted, and the core dropping position of the first inner cavity mud core is leaded out; the inner cavity mud cores drop according to the scale positions of the measurement rods; and the control methods of the rest inner cavity mud cores are the same with the control method of the first inner cavity mud core; 4), the outer mould mud cores are positioned according to notching marks on a box allocating plane; the thicknesses of walls formed between inner cores and outer cores are directly measured and adjusted to accurate values; 5), the inner mould mud cores and the inner cavity mud cores alternately drop and are fastened; and 6), all the cores, after box allocation, are fastened by bolts to form accurate casting moulds.
Description
Technical field
What the present invention relates to is a kind of casting core assembly of compressor case and the formative method of core assembly, belongs to casting technology field.
Background technology
Casing is one of most important foundry goods in the compressor, complex structure, and casting quality and dimension precision requirement are all very high.
The conventional cast method: form foundry goods profile die cavity with the natural pattern moulding, form inner chamber mud core with the core box modelling, become the sand mold die cavity by joining box-shaped, molten iron forms foundry goods after being poured into die cavity.
For the casing casting, because its profile is very complicated, primary structure is a plurality of Surface formings and cross section gradual change, with traditional forging type moulding, molding and lower core need a plurality of die joints, cause the external mold model incoherent, and wall thickness dimension can't be measured and adjust control in joining the case process.
Summary of the invention
The object of the invention is to overcome the deficiency that prior art exists, and provide a kind of model structure complete, join that case can be measured and capable of regulating under the core positional precision, thereby obtain smooth surface, size accurately and the casting core assembly of the compressor case of premium casting and the formative method of core assembly.
The objective of the invention is to finish by following technical solution, the casting core assembly of a kind of compressor case of the present invention, it mainly forms by joining core at the bottom of the case, its right end face benchmark mud core, the closed mud core of left end face, middle external mold mud core and inner chamber mud core, described whole mud core adopts core box molding mode to make according to the shape of compressor case respectively, external mold mud cores in the middle of having two at least between the closed mud core of described its right end face benchmark mud core and left end face, and polylith inner chamber mud core arranged in that middle external mold mud core inner is overlapping.
External mold mud core has three in the middle of described, wherein has at least two to be the overlapping external mold mud core that overlapped coremaking forms in the middle external mold mud core; Also has and the overlapping end face closure mud core that consists of overlapping with middle external mold mud core in the closed mud core of described its right end face benchmark mud core and left end face at least.
A kind of for the formative method of the casting core assembly of compressor case as mentioned above, this formative method comprises the steps:
1) shape according to compressor case forms its right end face benchmark mud core, the closed mud core of left end face, middle external mold mud core and inner chamber mud core with core box molding mode;
2) at the bottom of joining case, make above the core shaft centre line, join case datum line and the external mold mud core position line;
3) determine to join the core print seat position of rule from joining joining on the case datum line that core delimited at the bottom of the case with length bar, the mount pad scale, inner chamber mud core is by the length bar scale position core that falls, and remaining inner chamber mud core control method is identical identical with first;
4) external mold mud core location is by joining case plane cutting mark, and the wall thickness that forms between inside and outside core is directly measured and adjusted to accurately;
5) external mold mud core and inner chamber mud core replace the core and fastening that falls;
6) join behind the case all core assemblies and form accurate casting mold after with bolted.
In the step of described formative method:
In the step 1), form external mold mud cores and nine inner chamber mud cores in the middle of its right end face benchmark mud core, closed mud core of left end face, three according to the shape of compressor case with core box molding mode;
Step 2) in, on join case, makes shaft centre line, joins in case datum line and the external mold mud core position line, with No. 1 inner chamber mud core core at the bottom of joining case core that falls;
Step 3), 4), 5), the core that falls that carries out successively its right end face benchmark mud core fixes, No. 2 inner chamber mud cores fall, and core fixes, external mold mud core falls in the middle of No. 1, and core is fixed, 3, No. 4 inner chamber mud cores fall, and core is fixed, until the core that falls of the closed mud core of left end face fixing after all core assemblies finish;
It is complete that the present invention has model structure, moulding join that case can be measured and capable of regulating under the core positional precision, thereby obtain smooth surface, size accurately and the characteristics such as premium casting.
Description of drawings
Fig. 1 is one step schematic diagram in the formative method of the present invention;
Fig. 2 is another road step schematic diagram in the formative method of the present invention;
Fig. 3 is the another road step schematic diagram in the formative method of the present invention;
Fig. 4 is the lower one step schematic diagram in the formative method of the present invention;
Fig. 5 is the last one step schematic diagram in the formative method of the present invention;
The specific embodiment
The present invention will be described in detail below in conjunction with accompanying drawing: shown in Figure 5, the casting core assembly of a kind of compressor case of the present invention, it mainly forms by joining core 1 at the bottom of the case, its right end face benchmark mud core 2, the closed mud core 3 of left end face, middle external mold mud core 4 and inner chamber mud core 5, described whole mud core adopts core box molding mode to make according to the shape of compressor case respectively, external mold mud cores 4 in the middle of having two at least between the closed mud core 3 of described its right end face benchmark mud core 2 and left end face, and polylith inner chamber mud core 5 arranged in that middle external mold mud core 4 is inner overlapping.
External mold mud core has three in the middle of described, is respectively 1 extra mould mud core, 41,2 extra mould mud cores, 42,3 extra mould mud cores 43; Have at least two to be the overlapping external mold mud core (41,42,43) that overlapped coremaking forms in the external mold mud core 4 wherein; Have at least one to be and the overlapping and closed mud core of overlapping end face that consist of of middle external mold mud core 4 in the closed mud core 3 of described its right end face benchmark mud core 2 and left end face.Described inner chamber mud core 5 has respectively nine, is respectively 58, No. 9 inner chamber mud cores 59 of 57, No. 8 inner chamber mud cores of 56, No. 7 inner chamber mud cores of 55, No. 6 inner chamber mud cores of 54, No. 5 inner chamber mud cores of 53, No. 4 inner chamber mud cores of 52, No. 3 inner chamber mud cores of 51, No. 2 inner chamber mud cores of No. 1 inner chamber mud core.
Of the present invention a kind of for the formative method of the casting core assembly of compressor case as mentioned above, this formative method comprises the steps:
1) shape according to compressor case forms its right end face benchmark mud core 2, the closed mud core 3 of left end face, middle external mold mud core 4 and inner chamber mud core 5 with core box molding mode;
2) at the bottom of joining case, make above the core 1 shaft centre line 6, join case datum line 7 and the external mold mud core position line 8; As shown in Figure 1, also has No. 1 inner chamber mud core 51 among the figure;
3) draw with length bar and determine the coordinatometer position from the case datum line 7 of joining of joining that core 1 delimited at the bottom of the case, install and join core print seat scale 9, inner chamber mud core 5 is by the length bar scale position core that falls, and remaining inner chamber mud core 5 control method is identical with first; As shown in Figure 2, join in addition 11, No. 2 inner chamber muds of core position length bar core 52 among the figure, and No. 2 inner chamber mud core position scales 12;
4) external mold mud core location is by joining case 1 plane cutting 10 marks, and the wall thickness that forms between inside and outside core is directly measured and adjusted to accurately; As shown in Figure 3, the plane cutting shown in the figure 10 is 1 extra mould mud core 41 and this 1 extra mould mud core position (planar slot)
5) external mold mud core 4 replaces the core and fastening that falls with inner chamber mud core 5; See shown in Fig. 4,5 shown in Fig. 4 inner chamber mud core position scale 13 and 3, No. 4 inner chamber mud cores 53,54 are arranged 3, No. 4.
6) join behind the case all core assemblies and form accurate casting mold after with bolted.
In the step of described formative method:
In the step 1), shape according to compressor case forms an its right end face benchmark mud core, a closed mud core of left end face, three middle external mold mud cores and nine inner chamber mud cores with core box molding mode, is respectively 58, No. 9 inner chamber mud cores 59 of 57, No. 8 inner chamber mud cores of 56, No. 7 inner chamber mud cores of 55, No. 6 inner chamber mud cores of 54, No. 5 inner chamber mud cores of 53, No. 4 inner chamber mud cores of 52, No. 3 inner chamber mud cores of 51, No. 2 inner chamber mud cores of No. 1 inner chamber mud core.
Step 2) in, at the bottom of joining case, makes shaft centre line above the core 1, joins in case datum line and the external mold mud core position line, No. 1 inner chamber mud core is being joined the case core that falls;
Step 3), 4), 5), the core that falls that carries out successively its right end face benchmark mud core fixes, No. 2 inner chamber mud cores fall, and core fixes, external mold mud core falls in the middle of No. 1, and core is fixed, 3, No. 4 inner chamber mud cores fall, and core is fixed, until the core that falls of its right end face benchmark mud core fixing after all core assemblies finish.
This patent makes that the dimensional measurement of casing casting process is controlled, mud core core box model structure is reliable, the core assembly wall thickness is accurate.Thereby guarantee that casing pipeline streamline-shaped is accurate, gas flow curved surface size is desirable, guarantees that machine performance, energy consumption meet designing requirement.
Embodiment:
One, all the mud core forms:
1, its right end face benchmark mud core 2, the closed mud core 3 of left end face, middle external mold mud core 4; Wherein: the 41 respectively coremaking of its right end face benchmark mud core 2,1 extra mould mud core, the 3 overlapping moulding of the closed mud core of 2 extra mould mud cores, 42,3 extra mould mud cores 43 and left end face, the inner runner center line somatotype of pressing, housing is done size restrictions regulation and location.
Form combination mud core with screw rod locking behind the core assembly.
2, nine inner chamber mud cores 5 are used respectively core box coremaking.
Inner chamber core assembly position makes size accurately (wherein embedded core can be regulated space, mud core shift position) with fall one by one core, each mud core position measurement of length bar location, and is fastening with under casing after the accurate positioning.
Two, concrete formative method is:
1, forms whole mud cores with core box molding mode, comprise its right end face benchmark mud core 2, the closed mud core 3 of left end face, middle external mold mud core 4 and inner chamber mud core 5;
2, core 1 is made shaft centre line, is joined case datum line and the external mold mud core position line, as shown in Figure 1 at the bottom of joining case;
3, draw the #2 core core position that falls from the case datum line of joining of joining core 1 at the bottom of the case.Determine the position and install and to join the core print seat scale that inner chamber mud core is by the length bar scale position core that falls with length bar, the control method of other inner chamber mud core is identical, sees Fig. 2, shown in Figure 4;
4, external mold mud core 43 location are by the plane cutting mark of joining on the case 1, and the wall thickness that forms between inside and outside core is directly measured and adjusted to accurately, as shown in Figure 3;
5, external mold mud core and inner chamber mud core replace the core and fastening that falls, as shown in Figure 5;
6, join behind the case all core assemblies and form accurate casting mold after with bolted.
Claims (4)
1. the casting core assembly of a compressor case, it mainly forms by joining core at the bottom of the case, its right end face benchmark mud core, the closed mud core of left end face, middle external mold mud core and inner chamber mud core, described whole mud core adopts core box molding mode to make according to the shape of compressor case respectively, external mold mud cores in the middle of having two at least between the closed mud core of described its right end face benchmark mud core and left end face, and polylith inner chamber mud core arranged in that middle external mold mud core inner is overlapping.
2. the casting core assembly of compressor case according to claim 1 is characterized in that described middle external mold mud core has three, wherein has at least two to be the overlapping external mold mud core that successively overlapping compound coremaking forms in the middle external mold mud core; Have at least one to be the closed mud core of overlapping end face that consists of with the overlapping coremaking of middle external mold mud core in the closed mud core of described its right end face benchmark mud core and left end face.
3. one kind is used for the as claimed in claim 1 or 2 formative method of the casting core assembly of compressor case, it is characterized in that this formative method comprises the steps:
1) shape according to compressor case forms its right end face benchmark mud core, the closed mud core of left end face, middle external mold mud core and inner chamber mud core with core box molding mode;
2) at the bottom of joining case, make above the core shaft centre line, join case datum line and the external mold mud core position line;
3) determine to join the core print seat position of rule from joining joining on the case datum line that core delimited at the bottom of the case with length bar, the mount pad scale, inner chamber mud core is by the length bar scale position core that falls, and remaining inner chamber mud core control method is identical identical with first;
4) external mold mud core location is by joining cutting mark in core plane at the bottom of the case, and the wall thickness that forms between inside and outside core is directly measured and adjusted to accurately;
5) external mold mud core and inner chamber mud core replace the core and fastening that falls;
6) join behind the case all core assemblies and form accurate casting mold after with bolted.
4. the formative method of the casting core assembly of compressor case according to claim 3 is characterized in that this formative method is:
In the step 1), form external mold mud cores and nine inner chamber mud cores in the middle of its right end face benchmark mud core, closed mud core of left end face, three according to the shape of compressor case with core box molding mode;
Step 2) in, at the bottom of joining case, makes shaft centre line above the core, joins in case datum line and the external mold mud core position line, with No. 1 inner chamber mud core core at the bottom of joining case core that falls;
Step 3), 4), 5) in, the core that falls that carries out successively its right end face benchmark mud core fixes, No. 2 inner chamber mud cores fall, and core fixes, external mold mud core falls in the middle of No. 1, and core is fixed, 3, No. 4 inner chamber mud cores fall, and core is fixed ... until the fixing rear all core assemblies of the core that falls of the closed mud core of left end face are finished.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103464680A (en) * | 2013-09-18 | 2013-12-25 | 苏州市通润机械铸造有限公司 | Sand mold structure for integrally molded screw compressor case and manufacture and use method of sand mold structure |
| CN104907497A (en) * | 2015-06-05 | 2015-09-16 | 共享装备有限公司 | External multiple-core casting method for oblique column casting |
| CN105598382A (en) * | 2016-02-29 | 2016-05-25 | 共享装备股份有限公司 | Core assembly positioning device and core assembly method |
| CN106001420A (en) * | 2016-07-29 | 2016-10-12 | 共享装备股份有限公司 | Casting mold and method for controlling positioning dimension of sand core |
| CN109332599A (en) * | 2018-11-14 | 2019-02-15 | 安徽应流集团霍山铸造有限公司 | A kind of localization method of multilayer sand core block longitudinal stack |
| CN109848371A (en) * | 2018-11-29 | 2019-06-07 | 奥夫尔科精铸机械（昆山）有限公司 | A kind of forming method and compressor of compressor case |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103464680A (en) * | 2013-09-18 | 2013-12-25 | 苏州市通润机械铸造有限公司 | Sand mold structure for integrally molded screw compressor case and manufacture and use method of sand mold structure |
| CN104907497A (en) * | 2015-06-05 | 2015-09-16 | 共享装备有限公司 | External multiple-core casting method for oblique column casting |
| CN105598382A (en) * | 2016-02-29 | 2016-05-25 | 共享装备股份有限公司 | Core assembly positioning device and core assembly method |
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| CN106001420B (en) * | 2016-07-29 | 2018-05-08 | 共享装备股份有限公司 | Casting mould and the method for controlling sand core location dimension |
| CN109332599A (en) * | 2018-11-14 | 2019-02-15 | 安徽应流集团霍山铸造有限公司 | A kind of localization method of multilayer sand core block longitudinal stack |
| CN109848371A (en) * | 2018-11-29 | 2019-06-07 | 奥夫尔科精铸机械（昆山）有限公司 | A kind of forming method and compressor of compressor case |
| CN109848371B (en) * | 2018-11-29 | 2021-04-02 | 奥夫尔科精铸机械（昆山）有限公司 | Compressor shell forming method and compressor |
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| CN103008557B (en) | 2016-04-13 |
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