CN204449210U - A kind of core of many inner cavity revolution body structural member - Google Patents
A kind of core of many inner cavity revolution body structural member Download PDFInfo
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- CN204449210U CN204449210U CN201420808210.9U CN201420808210U CN204449210U CN 204449210 U CN204449210 U CN 204449210U CN 201420808210 U CN201420808210 U CN 201420808210U CN 204449210 U CN204449210 U CN 204449210U
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Abstract
The utility model relates to a kind of core of many inner cavity revolution body structural member, comprise the core base being embedded in nowel moulding sand top, the center, upper surface of core base is stacked with bottom core, and the top of bottom core is stacked with middle core, and the top of middle core is stacked with top core; Core base, bottom core, middle core and top core coaxial line; The bottom shape of core is consistent with the shape of the lower revolution inner chamber of structural member, and the shape of middle core is consistent with the shape of turning round inner chamber in the middle of structural member, and the shape of top core is consistent with the shape of the upper rotary inner chamber of structural member.Core center is provided with mandrel, and mandrel comprises mandrel mobile jib and is connected to the recessed end of mandrel and the mandrel nose at its two ends, and the mandrel nose of top can be plugged in the recessed end of mandrel of below.Core box comprises core box base plate and core box side plate, and the center of core box base plate is plugged with mandrel.The utility model can realize the shaping of large-scale multistage high-precision rotary body foundry goods complicated inner cavity structure.
Description
Technical field
The utility model relates to a kind of core of many inner cavity revolution body structural member, belongs to metal casting technique field.
Background technology
In field of metal casting technology, diameter is more than 0.5m, be highly called large-sized structural parts more than the structural member of more than 1.5m.For large-scale many inner cavity revolution body structural member, classical production process is first carry out segmentation by the manufacture difficulty of inner chamber, then completes casting, the processing of each section respectively, and scheme finally with bolts realizes the assembling of integral structure component.For ensureing that there is sufficient intensity bolt junction, general adpting flange disc thickness is the multiple of rotary body wall thickness, the state of arts that caused organization plan to be yielded to, and adds pts wt.
Along with the continuous upgrading of product, more and more propose higher lightweight requirements to structural member, section structural even adopts high-strength magnesium alloy to substitute high strength alumin ium alloy.The process program that large-scale many inner cavity revolution body structural member adopts conventional bolt to connect has been difficult to the requirement meeting novel product, adopts the process program of one piece cast form to become one of technological problems that must solve in novel product development and production process.
Manufacture casting mold die cavity with external mold and be called moulding with the outer surface forming foundry goods, to be called with the inner surface forming foundry goods with core box manufacture core and to make core.No matter be high strength alumin ium alloy, or high-strength magnesium alloy material, formulate in casting process scheme process at large-scale multistage revolving body foundry goods, the process program of middle core is the key factor determining that can one piece cast form realize.
Split casting inner-cavity structure size is ensured by the dimensional accuracy of middle core box completely, and monoblock cast inner-cavity structure size by overlapping core box and core assembly common guarantee more, monoblock cast single core cavity dimension process control point is several times of the single foundry goods of split casting, even tens times, the control difficulty amplification of its inner cavity size is larger.Split sand casting again multistage is assembled into the scheme of product, because first core box model exists certain error, certain error is there is again to sand mold from core box model, certain error is formed again to casting from sand mold, the last concaveconvex structure formed by sand mold carries out assembling and still there is certain error, therefore the precision of sand casting generally can only reach the requirement of CT11 grade in " GB/T6414-1999 GB Casting tolerance standard ", if the requirement reaching CT9 grade is excellent.Precision more than casting field CT9 grade is called high accuracy, and the casting of high-precision configuration part must adopt precision casting process, and traditional sand casting process cannot meet.
In addition, the depth-width ratio of split casting intermediate core is general in the reasonable scope, and the depth-width ratio of monoblock cast intermediate core is close to even more than three times, how to ensure that the perpendicularity of intermediate core is the problem that monoblock cast must solve.In addition, in casting pouring, forming process, bottom intermediate core is owing to being subject to the Action of Gravity Field of overall intermediate core axis, and it produces outside ess-strain in radial direction, this will have a strong impact on the radial yield of bottom intermediate core, easily cause foundry goods relative position radial dimension overproof or crack.
Utility model content
The purpose of this utility model is, overcomes problems of the prior art, provides a kind of core of many inner cavity revolution body structural member, can realize the shaping of large-scale multistage high-precision rotary body foundry goods complicated inner cavity structure.
For solving above technical problem, the core of a kind of many inner cavity revolution body structural member of the present utility model, comprise the core base being embedded in nowel moulding sand top, the center, upper surface of described core base is stacked with bottom core, the top of described bottom core is stacked with middle core, and the top of described middle core is stacked with top core; Described core base, bottom core, middle core and top core coaxial line; The shape of described bottom core is consistent with the shape of the lower revolution inner chamber of structural member, and the shape of described middle core is consistent with the shape of turning round inner chamber in the middle of structural member, and the shape of described top core is consistent with the shape of the upper rotary inner chamber of structural member.
Relative to prior art, the utility model achieves following beneficial effect: relative to the Sectional Cast of traditional sand casting, then bolt connects; The utility model adopts stacked bottom core, middle core and top core entirety to form the inner surface of structural member, and make the cast molding of many inner cavity revolution body structural member, the structural parts whole of casting is good, lightweight.
As preferred version of the present utility model, described middle core comprises stacked two-layer or more than three layers successively from bottom to top.
As improvement of the present utility model, described core base is at least provided with four braced wings, and each braced wing is radially symmetrical protruding centered by the axis of core base, and the end face of each braced wing and the end face of described core base are positioned on same horizontal plane.Core base is arranged with multiple braced wing, both the floor space of core base had been increased, even support is formed again in all directions, both improve the weight capacity that core base supports core, in turn ensure that stability and the perpendicularity of core, make core can not run-off the straight, ensure that the form and position filling core assembly and outer sand mold in type, forming process meets technological requirement.
As improvement of the present utility model, described bottom core, middle core and top core are respectively equipped with the mandrel mobile jib being positioned at core sand axial centre, described mandrel mobile jib is tubular structure, the upper end of described mandrel mobile jib is provided with mobile jib upper guide bush, the lower end of described mandrel mobile jib is provided with guide pin bushing under mobile jib, described mobile jib upper guide bush is connected with the recessed end of mandrel, under described mobile jib, guide pin bushing is connected with mandrel nose, the recessed end of described mandrel and mandrel nose respectively with described mandrel mobile jib interference fit; And center equal with the end face of core sand, the upper surface of the recessed end of described mandrel is provided with the recessed end toper hole of mandrel to lower recess, the lower end of described mandrel nose is provided with mandrel nose conical head, outside the bottom surface that described mandrel nose conical head stretches out core sand and with can with described mandrel recessed end toper hole interference fit.The mandrel combined by mandrel mobile jib, the recessed end of mandrel and mandrel nose runs through each core along axis, the mandrel nose conical head of top core is plugged in the recessed end toper hole of mandrel of below core, and both interference fit, can ensure to dock the axiality between core.Each section of mandrel both can bear the weight of respective core, and the weight of top core can be transmitted to core base by mandrel, the weight avoiding below core sand to bear top core produces outside ess-strain in radial direction, make the radial yield of bottom core, middle core and top core all fine, avoid foundry goods relative position radial dimension overproof or crack.Formed by mandrel between multistage core and be rigidly connected and devise stable core base, the non-accurate to dimension of inner chamber can reach CT6 ~ CT8 grade in GB/T6414, utilizes low-pressure casting to achieve the shaping of large-scale multistage high-precision rotary body foundry goods complicated inner cavity structure.
As improvement of the present utility model, the both sides, middle part of described mandrel mobile jib are symmetrical and be evenly provided with multiple tracks arbor draw-in groove along short transverse, each described arbor draw-in groove is parallel to each other and extends in the horizontal direction, crab is plugged with respectively and for matched in clearance in each described arbor draw-in groove, the top of every layer of crab is overlapped with the secondary arbor perpendicular with crab respectively, and described secondary arbor symmetry is positioned at the axis both sides of described mandrel mobile jib.Arbor draw-in groove on mandrel mobile jib provides axial support to crab, and crab provides axial support to secondary arbor, and the weight of crab and the common support core sand of secondary arbor, makes core have enough strength and stiffness, prevent deformation and fracture; Arbor draw-in groove and crab matched in clearance ensure that operability that mandrel and crab take out from cast-internal in sand removal process.
As improvement of the present utility model, the lower surface of the recessed end of described mandrel is provided with the recessed end cylindrical hole of mandrel, described mandrel recessed end cylindrical hole is sleeved on the mobile jib upper guide bush of described mandrel mobile jib, the sidewall of described mandrel recessed end cylindrical hole is provided with the radial pin-and-hole of the recessed end of through mandrel, the sidewall of described mobile jib upper guide bush is provided with radial pin-and-hole on mobile jib, and recessed for mandrel end is connected with described mandrel mobile jib with radial pin-and-hole on described mobile jib through the radial pin-and-hole of the recessed end of described mandrel by the radial connecting pin of the recessed end of mandrel.Mandrel recessed end cylindrical hole and mobile jib upper guide bush can ensure the axiality of the recessed end of mandrel and mandrel mobile jib by interference fit, the radial connecting pin of the recessed end of mandrel makes to be formed between the recessed end of mandrel and mandrel mobile jib to be rigidly connected, both ensure that the precision and stability of axis and radial dimension, in turn ensure that the intensity that overall structure lifting needs.
As improvement of the present utility model, the upper surface of described mandrel nose is provided with mandrel nose cylindrical hole, described mandrel nose cylindrical hole to be sleeved under the mobile jib of described mandrel mobile jib on guide pin bushing, the sidewall of described mandrel nose cylindrical hole is provided with the radial pin-and-hole of through mandrel nose, the sidewall of guide pin bushing radial pin-and-hole under being provided with mobile jib under described mobile jib, mandrel nose is connected with described mandrel mobile jib with radial pin-and-hole under described mobile jib through the radial pin-and-hole of described mandrel nose by the radial connecting pin of mandrel nose.Under mandrel nose cylindrical hole and mobile jib, guide pin bushing can ensure the axiality of mandrel nose and mandrel mobile jib by interference fit, the radial connecting pin of mandrel nose makes to be formed between mandrel nose and mandrel mobile jib to be rigidly connected, both ensure that the precision and stability of axis and radial dimension, in turn ensure that the intensity that overall structure lifting needs.
As improvement of the present utility model, the upper surface of the recessed end of described mandrel is provided with the axial pin-and-hole of the recessed end of mandrel, the lower surface of described mandrel nose is provided with the axial pin-and-hole of mandrel nose, be plugged with mandrel axial location pin in the axial pin-and-hole of described mandrel nose, the lower end of described mandrel axial location pin is plugged in the axial pin-and-hole of the recessed end of mandrel of lower one deck.The interference fit of mandrel axial location pin can prevent from relatively rotating between the recessed end of mandrel and the mandrel nose of grafting, ensures the precision of locating at circumferencial direction between the recessed end of mandrel and the mandrel nose of grafting and stability.
As improvement of the present utility model, the center of described core base is provided with the core base mandrel location taper hole to lower recess, and described mandrel nose conical head is plugged on described core base mandrel location taper hole and both interference fit; The side of described core base mandrel location taper hole is provided with core base mandrel dowel hole, the lower surface of described mandrel nose is provided with the axial pin-and-hole of mandrel nose, is plugged with mandrel axial location pin and the lower end of mandrel axial location pin is plugged in described core base mandrel dowel hole in the axial pin-and-hole of described mandrel nose.The interference fit that mandrel nose conical head and core base mandrel are located between taper hole can ensure coaxial line between mandrel and core base, and can ensure perpendicularity between the two; Mandrel axial location pin can prevent mandrel and core base from relatively rotating, and ensures quality of fit extremely stability.
As improvement of the present utility model, the axis middle part of the recessed end of described mandrel is provided with the recessed end screwed hole of mandrel along Axis Extension, and described mandrel recessed end screwed hole is between described mandrel recessed end cylindrical hole and the recessed end toper hole of described mandrel; The mandrel nose conical head of described mandrel nose is provided with the mandrel nose screwed hole extended internally along axis.The recessed end screwed hole of mandrel and mandrel nose screwed hole can spin hanger respectively, and core can be lifted by crane from two ends, are convenient to core transhipment and upset; For coremaking, core finishing, application and core overall package provide lifting interface, ensure that above operation has stronger operability.
Mandrel mobile jib of the present utility model, the recessed end of mandrel, mandrel nose, core base and each connecting pin are metalwork fine finishining and form, ensured the high accuracy of shaping rear structural member by the high accuracy of above finished part, instead of rely on the cooperation of core sand to determine precision.Utilize the integral rigidity between core base and multiple mandrel to connect, radial and axial stable connection is reliable, coordinates accurate, ensure that the change in size of filling bottom core in type, forming process meets technological requirement; The weight of core is born by mandrel and transmits, and the weight avoiding below core sand to bear top core produces outside ess-strain in radial direction, and the radial yield of whole core is all fine.Though the utility model frock is many, but good manufacturability, processing and simple to operate, for diameter more than 0.5m, highly more than the large-sized structural parts of more than 1.5m, adopt sand casting process that the cylindricity of overall core or conicity just can be made to reach ± 0.5mm, axial and radial dimension precision can reach ± 1mm, the casting rate that can meet CT6 ~ CT8 in " GB/T6414-1999 GB Casting tolerance standard ", to the dimensional requirement of integral sand core, achieves the overall precision form of large-scale multistage high-precision rotary body foundry goods complicated inner cavity structure.
Accompanying drawing explanation
Be described in further detail the utility model below in conjunction with the drawings and specific embodiments, accompanying drawing only provides reference and explanation use, is not used to limit the utility model.
Fig. 1 is the front view of the core of the utility model many inner cavity revolution body structural member.
Fig. 2 is the three-dimensional exploded view of Fig. 1.
Fig. 3 is the front view of mandrel mobile jib in the utility model.
Fig. 4 is the stereogram of Fig. 3.
Fig. 5 is the front view of the recessed end of mandrel in the utility model.
Fig. 6 is the stereogram of Fig. 5.
Fig. 7 is the front view of the utility model SMIS crown of roll end.
Fig. 8 is the stereogram of Fig. 7.
Fig. 9 is the stereogram of sand core internal structural member.
Figure 10 is the state diagram that each section of mandrel tries to assemble on core base.
Figure 11 is the front view of the utility model SMIS box plate.
Figure 12 is the stereogram of Figure 11.
Figure 13 be in the utility model core box side plate surround after front view.
Figure 14 is the stereogram of Figure 13.
Figure 15 is the front view in the utility model after core box assembling.
Figure 16 is the stereogram of Figure 15.
Figure 17 is the stereogram of core after the core box demoulding.
In figure: 1. mandrel mobile jib; 1a. mobile jib upper guide bush; Guide pin bushing under 1b. mobile jib; Radial pin-and-hole on 1c. mobile jib; Radial pin-and-hole under 1d. mobile jib; 1e. arbor draw-in groove;
2. the recessed end of mandrel; The recessed end cylindrical hole of 2a. mandrel; The recessed end toper hole of 2b. mandrel; The radial pin-and-hole of the recessed end of 2c. mandrel; The axial pin-and-hole of the recessed end of 2d. mandrel; The recessed end screwed hole of 2e. mandrel;
3. mandrel nose; 3a. mandrel nose cylindrical hole; 3b. mandrel nose conical head; The radial pin-and-hole of 3c. mandrel nose; The axial pin-and-hole of 3d. mandrel nose; 3e. mandrel nose screwed hole;
4. the radial connecting pin of the recessed end of mandrel; 5. the radial connecting pin of mandrel nose; 6. mandrel axial location pin; 7. crab; 8. secondary arbor;
9. core base; 9a. braced wing; 9b. core base mandrel location taper hole; 9c. core base mandrel dowel hole; 9d. external mold setting circle post holes; 9e. external mold location taper hole;
10. core box base plate; 10a. core box base plate conical head; 10b. core box base plate location inner conical surface; 10c core box base plate mandrel dowel hole; 10d. core box base plate axial location hole;
11. core box side plates; 11a. core box side plate location male cone (strobilus masculinus); 11b. core box side plate axial location hole; 12. core box side plate alignment pins; 13. core sands; 14. nowels; A. bottom core; B. core in the middle of; C. top core.
Detailed description of the invention
As shown in Figure 1 and Figure 2, the core of many inner cavity revolution body structural member of the present utility model, comprise the core base 9 being embedded in nowel 14 moulding sand top, the center, upper surface of core base 9 is stacked with bottom core A, the top of bottom core A is stacked with middle core B, and the top of middle core B is stacked with top core C; Core base 9, bottom core A, middle core B and top core C coaxial line; The shape of bottom core A is consistent with the shape of the lower revolution inner chamber of structural member, and the shape of middle core B is consistent with the shape of turning round inner chamber in the middle of structural member, and the shape of top core C is consistent with the shape of the upper rotary inner chamber of structural member.Middle core B comprises stacked two-layer or more than three layers successively from bottom to top.
Core base 9 is at least provided with four braced wing 9a, and each braced wing 9a is radially symmetrical protruding centered by the axis of core base 9, and the end face of each braced wing 9a and the end face of core base 9 are positioned on same horizontal plane.
Region corresponding with the base of external mold on core base 9 is provided with external mold setting circle post holes 9d and taper hole 9e located by external mold, in external mold setting circle post holes 9d and external mold location taper hole 9e, grafting external mold bearing pin and external mold realize locating respectively, and external mold setting circle post holes 9d is different to avoid the anisotropy of external mold with the upper port aperture of external mold location taper hole 9e.
As shown in Fig. 3 to Fig. 9, bottom core A, middle core B and top core C are respectively equipped with the mandrel mobile jib 1 being positioned at core sand axial centre, mandrel mobile jib 1 is tubular structure, the upper end of mandrel mobile jib 1 is provided with mobile jib upper guide bush 1a, the lower end of mandrel mobile jib 1 is provided with guide pin bushing 1b under mobile jib, mobile jib upper guide bush 1a is connected with the recessed end 2 of mandrel, under mobile jib, guide pin bushing 1b is connected with mandrel nose 3, the recessed end 2 of mandrel and mandrel nose 3 respectively with mandrel mobile jib 1 interference fit; And center equal with the end face of core sand 13, the upper surface of the recessed end of mandrel 2 is provided with the mandrel recessed end toper hole 2b to lower recess, the lower end of mandrel nose 3 is provided with mandrel nose conical head 3b, outside the bottom surface that mandrel nose conical head 3b stretches out core sand 13 and with can with mandrel recessed end toper hole 2b interference fit.
The both sides, middle part of mandrel mobile jib 1 are symmetrical and be evenly provided with multiple tracks arbor draw-in groove 1e along short transverse, each arbor draw-in groove 1e is parallel to each other and extends in the horizontal direction, crab 7 is plugged with respectively and for matched in clearance in each arbor draw-in groove 1e, the top of every layer of crab 7 is overlapped with the secondary arbor 8 perpendicular with crab 7 respectively, and secondary arbor 8 symmetry is positioned at the axis both sides of mandrel mobile jib 1.
The lower surface of the recessed end of mandrel 2 is provided with mandrel recessed end cylindrical hole 2a, mandrel recessed end cylindrical hole 2a is sleeved on the mobile jib upper guide bush 1a of mandrel mobile jib 1, the sidewall of mandrel recessed end cylindrical hole 2a is provided with the radial pin-and-hole 2c of the recessed end of through mandrel, the sidewall of mobile jib upper guide bush 1a is provided with radial pin-and-hole 1c on mobile jib, and recessed for mandrel end 2 is connected with mandrel mobile jib 1 with pin-and-hole 1c radial on mobile jib through the radial pin-and-hole 2c of the recessed end of mandrel by the radial connecting pin 4 of the recessed end of mandrel.
The upper surface of mandrel nose 3 is provided with mandrel nose cylindrical hole 3a, mandrel nose cylindrical hole 3a to be sleeved under the mobile jib of mandrel mobile jib 1 on guide pin bushing 1b, the sidewall of mandrel nose cylindrical hole 3a is provided with the radial pin-and-hole 3c of through mandrel nose, the sidewall of guide pin bushing 1b radial pin-and-hole 1d under being provided with mobile jib under mobile jib, mandrel nose 3 is connected with mandrel mobile jib 1 with pin-and-hole 1d radial under mobile jib through the radial pin-and-hole 3c of mandrel nose by the radial connecting pin 5 of mandrel nose.
The upper surface of the recessed end of mandrel 2 is provided with the axial pin-and-hole 2d of the recessed end of mandrel, the lower surface of mandrel nose 3 is provided with the axial pin-and-hole 3d of mandrel nose, be plugged with mandrel axial location pin 6 in the axial pin-and-hole 3d of mandrel nose, the lower end of mandrel axial location pin 6 is plugged in the axial pin-and-hole 2d of the recessed end of mandrel of lower one deck.
The axis middle part of the recessed end of mandrel 2 is provided with the mandrel recessed end screwed hole 2e along Axis Extension, and mandrel recessed end screwed hole 2e is between mandrel recessed end cylindrical hole 2a and mandrel recessed end toper hole 2b; The mandrel nose conical head 3b of mandrel nose 3 is provided with the mandrel nose screwed hole 3e extended internally along axis.
As shown in Figure 10, the center of core base 9 is provided with the core base mandrel location taper hole 9b to lower recess, and mandrel nose conical head 3b is plugged on core base mandrel location taper hole 9b and both interference fit; The side of core base mandrel location taper hole 9b is provided with core base mandrel dowel hole 9c, the lower surface of mandrel nose 3 is provided with the axial pin-and-hole 3d of mandrel nose, is plugged with mandrel axial location pin 6 and the lower end of mandrel axial location pin 6 is plugged in core base mandrel dowel hole 9c in the axial pin-and-hole 3d of mandrel nose.
As shown in Figure 11 to Figure 17, the core sand of bottom core A, middle core B and top core C is shaping in core box respectively, core box comprises core box base plate 10 and the core box side plate 11 of coaxial line, the excircle of core box base plate 10 is provided with the flange protruded upward, and the inner periphery of flange is provided with core box base plate location inner conical surface 10b; Core box side plate 11 is the cylinder that at least two tiles surround, and the lower end after core box side plate 11 surrounds is provided with core box side plate location male cone (strobilus masculinus) 11a, and core box side plate location male cone (strobilus masculinus) 11a to be plugged in the inner conical surface 10b of core box base plate location and both interference fit; The inner side of core box base plate location inner conical surface 10b is provided with core box base plate axial location hole 10d, the inner side of core box side plate location male cone (strobilus masculinus) 11a is provided with core box side plate axial location hole 11b, is plugged with core box side plate alignment pin 12 and the upper end of core box side plate alignment pin 12 is plugged in core box side plate axial location hole 11b in core box base plate axial location hole 10d; The center of core box base plate 10 is provided with core box base plate conical head 10a protruding upward, and the side of core box base plate conical head 10a is provided with core box base plate mandrel dowel hole 10c; The upper surface of the recessed end of mandrel 2 is provided with the axial pin-and-hole 2d of the recessed end of mandrel, and after mandrel mobile jib 1 is inverted together with mandrel nose 3 and recessed end 2 entirety of mandrel, mandrel recessed end toper hole 2b to be plugged on core box base plate conical head 10a and both interference fit; Be plugged with mandrel axial location pin 6 in core box base plate mandrel dowel hole 10c, the upper end of mandrel axial location pin 6 is plugged in the axial pin-and-hole 2d of the recessed end of mandrel.
The foregoing is only the better possible embodiments of the utility model, non-ly therefore limit to scope of patent protection of the present utility model.In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.
Claims (10)
1. the core of inner cavity revolution body structural member more than a kind, comprise the core base being embedded in nowel moulding sand top, it is characterized in that: the center, upper surface of described core base is stacked with bottom core, the top of described bottom core is stacked with middle core, and the top of described middle core is stacked with top core; Described core base, bottom core, middle core and top core coaxial line; The shape of described bottom core is consistent with the shape of the lower revolution inner chamber of structural member, and the shape of described middle core is consistent with the shape of turning round inner chamber in the middle of structural member, and the shape of described top core is consistent with the shape of the upper rotary inner chamber of structural member.
2. the core of many inner cavity revolution body structural member according to claim 1, is characterized in that: described middle core comprises stacked two-layer or more than three layers successively from bottom to top.
3. the core of many inner cavity revolution body structural member according to claim 1, it is characterized in that: described core base is at least provided with four braced wings, each braced wing is radially symmetrical protruding centered by the axis of core base, and the end face of each braced wing and the end face of described core base are positioned on same horizontal plane.
4. the core of many inner cavity revolution body structural member according to claim 1, it is characterized in that: described bottom core, middle core and top core are respectively equipped with the mandrel mobile jib being positioned at core sand axial centre, described mandrel mobile jib is tubular structure, the upper end of described mandrel mobile jib is provided with mobile jib upper guide bush, the lower end of described mandrel mobile jib is provided with guide pin bushing under mobile jib, described mobile jib upper guide bush is connected with the recessed end of mandrel, under described mobile jib, guide pin bushing is connected with mandrel nose, the recessed end of described mandrel and mandrel nose respectively with described mandrel mobile jib interference fit; And center equal with the end face of core sand, the upper surface of the recessed end of described mandrel is provided with the recessed end toper hole of mandrel to lower recess, the lower end of described mandrel nose is provided with mandrel nose conical head, outside the bottom surface that described mandrel nose conical head stretches out core sand and can with described mandrel recessed end toper hole interference fit.
5. the core of many inner cavity revolution body structural member according to claim 4, it is characterized in that: the both sides, middle part of described mandrel mobile jib are symmetrical and be evenly provided with multiple tracks arbor draw-in groove along short transverse, each described arbor draw-in groove is parallel to each other and extends in the horizontal direction, crab is plugged with respectively and for matched in clearance in each described arbor draw-in groove, the top of every layer of crab is overlapped with the secondary arbor perpendicular with crab respectively, and described secondary arbor symmetry is positioned at the axis both sides of described mandrel mobile jib.
6. the core of many inner cavity revolution body structural member according to claim 4, it is characterized in that: the lower surface of the recessed end of described mandrel is provided with the recessed end cylindrical hole of mandrel, described mandrel recessed end cylindrical hole is sleeved on the mobile jib upper guide bush of described mandrel mobile jib, the sidewall of described mandrel recessed end cylindrical hole is provided with the radial pin-and-hole of the recessed end of through mandrel, the sidewall of described mobile jib upper guide bush is provided with radial pin-and-hole on mobile jib, and recessed for mandrel end is connected with described mandrel mobile jib with radial pin-and-hole on described mobile jib through the radial pin-and-hole of the recessed end of described mandrel by the radial connecting pin of the recessed end of mandrel.
7. the core of the many inner cavity revolution body structural member according to claim 4 or 6, it is characterized in that: the upper surface of described mandrel nose is provided with mandrel nose cylindrical hole, described mandrel nose cylindrical hole to be sleeved under the mobile jib of described mandrel mobile jib on guide pin bushing, the sidewall of described mandrel nose cylindrical hole is provided with the radial pin-and-hole of through mandrel nose, the sidewall of guide pin bushing radial pin-and-hole under being provided with mobile jib under described mobile jib, mandrel nose is connected with described mandrel mobile jib with radial pin-and-hole under described mobile jib through the radial pin-and-hole of described mandrel nose by the radial connecting pin of mandrel nose.
8. the core of many inner cavity revolution body structural member according to claim 4, it is characterized in that: the upper surface of the recessed end of described mandrel is provided with the axial pin-and-hole of the recessed end of mandrel, the lower surface of described mandrel nose is provided with the axial pin-and-hole of mandrel nose, be plugged with mandrel axial location pin in the axial pin-and-hole of described mandrel nose, the lower end of described mandrel axial location pin is plugged in the axial pin-and-hole of the recessed end of mandrel of lower one deck.
9. the core of many inner cavity revolution body structural member according to claim 4, it is characterized in that: the center of described core base is provided with the core base mandrel location taper hole to lower recess, and described mandrel nose conical head is plugged on described core base mandrel location taper hole and both interference fit; The side of described core base mandrel location taper hole is provided with core base mandrel dowel hole, the lower surface of described mandrel nose is provided with the axial pin-and-hole of mandrel nose, is plugged with mandrel axial location pin and the lower end of mandrel axial location pin is plugged in described core base mandrel dowel hole in the axial pin-and-hole of described mandrel nose.
10. the core of many inner cavity revolution body structural member according to claim 6, it is characterized in that: the axis middle part of the recessed end of described mandrel is provided with the recessed end screwed hole of mandrel along Axis Extension, and described mandrel recessed end screwed hole is between described mandrel recessed end cylindrical hole and the recessed end toper hole of described mandrel; The mandrel nose conical head of described mandrel nose is provided with the mandrel nose screwed hole extended internally along axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420808210.9U CN204449210U (en) | 2014-12-19 | 2014-12-19 | A kind of core of many inner cavity revolution body structural member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420808210.9U CN204449210U (en) | 2014-12-19 | 2014-12-19 | A kind of core of many inner cavity revolution body structural member |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493099A (en) * | 2014-12-19 | 2015-04-08 | 扬州峰明金属制品有限公司 | Mold core of multi-inner-cavity revolving body structural component |
| CN106475518A (en) * | 2016-09-29 | 2017-03-08 | 宁夏共享模具有限公司 | For casting sand mold and its manufacture method of rotary structure foundry goods |
| CN109454205A (en) * | 2018-12-13 | 2019-03-12 | 淮海工业集团有限公司 | A kind of sand mold of revolution solid of curved surface |
| CN111195706A (en) * | 2020-02-24 | 2020-05-26 | 共享智能铸造产业创新中心有限公司 | Method for preventing casting from shrinkage cracking |
-
2014
- 2014-12-19 CN CN201420808210.9U patent/CN204449210U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493099A (en) * | 2014-12-19 | 2015-04-08 | 扬州峰明金属制品有限公司 | Mold core of multi-inner-cavity revolving body structural component |
| CN106475518A (en) * | 2016-09-29 | 2017-03-08 | 宁夏共享模具有限公司 | For casting sand mold and its manufacture method of rotary structure foundry goods |
| CN106475518B (en) * | 2016-09-29 | 2019-02-01 | 共享智能装备有限公司 | For casting the sand mold and its manufacturing method of rotary structure casting |
| CN109454205A (en) * | 2018-12-13 | 2019-03-12 | 淮海工业集团有限公司 | A kind of sand mold of revolution solid of curved surface |
| CN109454205B (en) * | 2018-12-13 | 2024-01-26 | 淮海工业集团有限公司 | Sand mould of curved surface revolution body |
| CN111195706A (en) * | 2020-02-24 | 2020-05-26 | 共享智能铸造产业创新中心有限公司 | Method for preventing casting from shrinkage cracking |
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