CN1257782C - Pored component and manufacturing method thereof - Google Patents
Pored component and manufacturing method thereof Download PDFInfo
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- CN1257782C CN1257782C CN 03136997 CN03136997A CN1257782C CN 1257782 C CN1257782 C CN 1257782C CN 03136997 CN03136997 CN 03136997 CN 03136997 A CN03136997 A CN 03136997A CN 1257782 C CN1257782 C CN 1257782C
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- shell mould
- female shell
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Abstract
The present invention provides a cast pored component and a manufacturing method thereof. The post processing can be omitted to the minute quantity by the present invention. The pored component is provided with screw holes which are formed at specified intervals and are used for assembly and a shaped slotted hole on one end surface provided with a flat flange, wherein when a primary blank of the pored component is formed in a casting mode, a master model of the pored component is formed based on the precision of the specified intervals of the primary blank which is cast. Corresponding to the master model, a second master model is prepared. Resin bonded sand which is dispersed in particulate silica sand and is mixed with 2 to 5% thermosetting resin is filled in a cavity formed between the master models. The resin bonded sand is heated, which leads resin of the resin bonded sand to be solidified. A female shell mould of the primary blank of a mould core which is corresponding to the screw hole and the shaped slotted hole is formed inside. A flat mould surface is positioned on the open surface of the female shell mould which is separated from the master model. A first sand box is arranged on the female shell mould. The first sand box is cast in the female shell mould, and the primary blank of the pored component is formed.
Description
Technical field
The face at one end of the present invention relates to is to have the screw hole of the assembling usefulness that forms with prescribed distance on the smooth flange section, have the part with holes and a manufacture method thereof of special-shaped slotted eye simultaneously.
Background technology
About this part with holes, the parts of bearings (bearing) of Rotary Compressor is for example arranged, the flange section that is installed on the machine frame forms one with this part with holes.Its concrete structure as shown in Figure 1, on discoideus flange section 11, produce the screw hole 12 of assembling usefulness along the prescribed distance circle with connecting, in addition, center at flange section 11, have bearing portions 13 cylindraceous (projection section), the heart is provided with the dead eye 14 that connects flange section 11 therein.
Vane type non-return valve for refrigerant compressed in the cylinder (not shown) that is configured on this parts of bearings exporting at above-mentioned Rotary Compressor, need on flange section 11, form and hold reed shape valve body 15 and limit the special-shaped slotted eye 17 that this valve is opened the valve compressing tablet 16 of height, in addition, in the bottom of this slotted eye 17, be formed for installing the installing hole 18 and the output valve opening 19 of valve body 15 and valve compressing tablet 16 with connecting.
This parts of bearings is made, and can adopt the powder metallurgic method of carrying out sintering with powder pressing forming, then, perhaps, adopts liquation is injected the sand casting method that sand mo(u)ld forms the thick shape parts of parts of bearings.Utilize the former powder metallurgic method, dimensional accuracy height in the moulding, can form complicated shape, can save back processing, therefore on the parts of bearings of above-mentioned Rotary Compressor, adopt to have advantage, but well-known, the material powder price is expensive, mould is also expensive, and this all is a shortcoming, moreover, when on parts of bearings, adopting, owing to have small pore in the inside of sintered component, not only can not guarantee enough intensity, and after add man-hour, the attrition process wet goods immerses in the above-mentioned pore, when using as bearing, these oil ooze out into bearing surface, and its viscosity can cause defect such as gyroaxis locking.Particularly, the impurity that for example oozes out adheres to, is deposited on the inwall capillaceous of the freeze cycle of using Rotary Compressor, becomes reason that capillary stops up etc., can be claimed damages.
On the other hand, use the latter's sand casting method, different with above-mentioned sintered component, not by the saturating pore of oil immersion, immaculate in this, but when the screw hole of the assembling usefulness that the compact dimensions precision is high at the same time and special-shaped slotted eye, complex-shaped because of it, even use by clay, also be unusual difficulty as the dry sand mo(u)ld of bonding agent or to add the sand mo(u)ld of moisture in as the silica sand of key material and the synthetic sand that constitutes as the bentonite of bonding agent.Therefore, will adopt the back processing of boring processing etc. to screw hole, and will adopt the back processing of slotting cutter processing etc. to special-shaped slotted eye, process processing, like this, processing cost improves, and output is not high.
Summary of the invention
The present invention is based on the problems referred to above and proposes, and its purpose is to provide the shell mould technology of using in the core rod of a kind of utilization at sand mo(u)ld etc., and back processing is omitted to the part with holes and the manufacture method thereof of few casting.
In order to achieve the above object, the invention provides a kind of manufacture method of part with holes, this part with holes at one end face is to have the screw hole of the assembling usefulness that forms with prescribed distance on the smooth flange section, have a special-shaped slotted eye simultaneously, it is characterized in that: when forming the basic blank of part with holes by casting, with the precision of afore mentioned rules spacing, form the master mold of part with holes based on the basic blank of casting; When forming master mold, corresponding with an end face of above-mentioned flange section, one or additionally constitute the back side portion of the die face that is equivalent to first sandbox; Corresponding with above-mentioned master mold, prepare second master mold, to in the particulate silica sand, disperse, mix 2～5% the resulting resin sand of thermosetting resin, be filled in the die cavity that between master mold, forms, heat this resin sand, make the resin solidification of above-mentioned resin sand, be formed in the female shell mould of the basic blank of inner formation and above-mentioned screw hole and the corresponding core rod of special-shaped slotted eye; Smooth die face is combined on the open surface of extracting the female shell mould under the above-mentioned master mold state, first sandbox is contained on the above-mentioned female shell mould, by casting in the basic blank that forms part with holes in the above-mentioned female shell mould.
In addition, the invention provides a kind of manufacture method of part with holes, this part with holes at one end face is to have the screw hole of the assembling usefulness that forms with prescribed distance on the smooth flange section, have a special-shaped slotted eye simultaneously, it is characterized in that: when forming the basic blank of part with holes by casting, with the precision of afore mentioned rules spacing, form the master mold of part with holes based on the basic blank of casting; When forming master mold, corresponding with an end face of above-mentioned flange section, one or additionally constitute the back side portion of the die face that is equivalent to first sandbox; To in the particulate silica sand, disperse, mix the resin sand of 2～5% thermosetting resin, be seated in second sandbox of box-shaped, by pre-heated above-mentioned master mold is pressed in second sandbox, utilize surperficial contacted part with the above-mentioned master mold that comprises above-mentioned back side portion, make resin solidification heatedly, be formed in the female shell mould of the basic blank of inner formation and above-mentioned screw hole and the corresponding core rod of special-shaped slotted eye; Smooth die face is combined on the open surface of extracting the female shell mould under the above-mentioned master mold state, first sandbox is contained on the above-mentioned female shell mould, by casting in the basic blank that forms part with holes in the above-mentioned female shell mould.
In addition, in the embodiments of the present invention, in casting when the flange section of above-mentioned part with holes forms the basic blank of the axis hole that connects, on the position suitable with above-mentioned axis hole, form the localization part that core rod is installed usefulness in above-mentioned master mold one side in advance, columned core rod is placed in the above-mentioned female shell mould.This is effective on its purposes.
And, the manufacture method of this part with holes, in first sandbox and shell mould, part with holes by the shell mold forming, because its precision height, the event of part that can make complicated shape for example, can make back simplified processing or omission at screw hole and special-shaped slotted eye, like this, can reduce cost, improve output.
Description of drawings
Fig. 1 is the exploded perspective view of the object lesson of expression part with holes of the present invention.
Fig. 2 is the longitudinal section of the structure of the master mold in the method for the expression part with holes of making first embodiment of the present invention.
Fig. 3 is used for illustrating the longitudinal section that is made of the situation of female shell mould master mold.
Fig. 4 is the longitudinal section that is used to illustrate the state of being cast by first sandbox and female shell mould equally.
Fig. 5 is the longitudinal section of expression back machining status.
Fig. 6 is the longitudinal section of the master structure in the method for the expression part with holes of making second embodiment of the present invention.
Fig. 7 is used to illustrate the longitudinal section that is made of the situation of female shell mould master mold.
Fig. 8 is the longitudinal section that is used to illustrate the state of being cast by first sandbox and female shell mould equally.
Symbol description: 1 master mold, the discoideus part of 1A, the 1B circular cylinder shaped portion, the 1C screw is used the moulding hole, the 1D groove is used the moulding hole, and the 1E valve opening is used the moulding hole, 1F end face, 1G mould holding components, the 1H installation portion, 1I protuberance, 2 first sandboxes, 2a die face, 3 second master molds, 3A inlet, 4 die cavities, 5 resin sands, 6,6 ' female shell mould, 6a, 6b core rod, the 6c recess, 6 ' d boss, 7 supporting sandboxes, 8 core rods, 9 second sandboxes, 10 basic blanks, 11 flange sections, 12 screw holes, 13 bearing portions, 14 dead eyes, 15 valve bodies, 16 valve compressing tablets, 17 slotted eyes, 18 installing holes, 19 output valve openings.
The specific embodiment
(first embodiment)
Below, specifically describe the present invention with reference to Fig. 2 to first embodiment shown in Figure 5.Here, as the method for making above-mentioned part with holes (on one end is smooth flange section 11, have the screw hole 12 of the assembling usefulness that forms with prescribed distance, and have special-shaped slotted eye 17), can be by following operation moulding.
(1) when forming the basic blank 10 (with reference to Fig. 1) of part with holes, as shown in Figure 2,, forms the master mold 1 of part with holes with precision based on the afore mentioned rules spacing of the basic blank 10 of casting by casting.This master mold 1 has: with flange section 11 corresponding discoideus part 1A; The circular cylinder shaped portion 1B corresponding with dead eye 14.In addition, also have: with screw hole 12 and special-shaped slotted eye 17 (in this embodiment, also having installing hole 18 and output valve opening 19) corresponding screw moulding hole 1C; Groove moulding hole 1D (installation) with moulding hole (not shown), valve opening moulding hole 1E.
(2) when forming this master mold 1, with corresponding with an end face of flange section 11 and be connected (as described later shown in second embodiment with the end face 1F (with having the opposite end face of circular cylinder shaped portion 1B one side) of the discoideus part 1A of the die face 2a that is equivalent to flat first sandbox 2 (in back narration), it also can form one with this end face) mode, by installation portion 1H, master mold 1 is installed on the other mould holding components 1G.In addition, in this embodiment, form the protuberance 1I of setting core rod described later installation site at the front end of circular cylinder shaped portion 1B.
(3) on the other hand, corresponding with above-mentioned master mold, prepare second master mold 3.Secondly, as shown in Figure 3, for under the pressure of 2kgf～4kgf, will in the particulate silica sand, disperse, mix for example resin sand of phenolic resins (granularity is 80～90) of 2～5% thermosetting resin at load, be filled to by inlet 3A in the die cavity 4 of formation between the master mold 1 and second master mold 3.For example under 200～300 ℃ temperature, heat this resin sand, make above-mentioned resin sand resin solidification, be formed in the female shell mould 6 of basic blank 10 usefulness of inside formation and screw hole 12 and special-shaped slotted eye 17 corresponding core rod 6a and 6b (comprising and installing hole 18 and output valve opening 19 corresponding core rod parts) at this.
(4) then, as shown in Figure 4, pack in the supporting sandbox 7 extracting female shell mould 6 under master mold 1 state, the smooth die face 2a that closes makes to contact with the open surface of female shell mould 6.Again first sandbox 2 is contained on the female shell mould 6, pours into liquation, in female shell mould 6, form the basic blank 10 of part with holes.In this embodiment, in female shell mould 6, prepare and dead eye 14 corresponding core rods 8 in addition in advance, it is embedded among the recess 6c that forms among the protuberance 1I of master mold 1.Therefore, during the basic blank 10 of the structure that connects towards the flange section 11 of part with holes in cast bearing hole 14, plastic dead eye 14 simultaneously.
The liquation here is meant, for example have the general characteristic in JIS5501, stipulated, promptly by the S of the P of Mn, the 0.03～0.15wt% of Si, the 0.5～1.0wt% of C, the 1.5～3.0wt% of 2.5～3.8wt% and 0.05～1.15wt%, and other grey cast-iron that constitutes for Fe.In addition, above-mentioned core rod 8 shown in the embodiment, also can form as one with master mold 1 as described later.
Like this, after constituting basic blank 10, as shown in Figure 5, end face (installed surface of an opposite side with boss) to flange section 11 carries out machining, if necessary, clear up special-shaped slotted eye 17, installing hole 18 and output are carried out fine finishining with valve opening 19 with reamer with End Milling Process.In addition, also to carry out fine finishining to dead eye 14.In addition, because available shell mould forms screw hole 12 with correct position and size on flange section 11, therefore do not need back processing.Like this, if in the die cavity 4 by the sealing of first sandbox, form basic blank 10, then the back processing of the foundry goods before finishing part with holes can be oversimplified or omit.
(second embodiment)
In yet another embodiment of the present invention, be to possess the screw hole 12 of assembling usefulness, have the method for the part with holes of special-shaped slotted eye 17 simultaneously with the spacing of regulation on the smooth flange section 11 as being manufactured on an end face, can be by following operation moulding.
(1) when forming the basic blank 10 of part with holes by casting, as shown in Figure 6,, forms the master mold 1 ' of part with holes with precision based on the afore mentioned rules spacing of the basic blank 10 of casting.
(2) when forming master mold 1 ', corresponding with an end face of flange section 11, one (or in addition) constitutes the 1 ' A of back side portion of the die face 2a that is equivalent to first sandbox 2.
(3) secondly, as shown in Figure 7, to in the particulate silica sand, disperse, the resin sand 5 of the thermosetting resin of mixing 2～5% is filled in second sandbox 9 (commentaries on classics case) of box-shaped, be pressed in second sandbox 9 pre-heated master mold 1 ' (common, to reverse up and down), utilize the part that contacts with the master mold surface that comprises the 1 ' A of back side portion, make resin solidification heatedly, be formed in inner formation and screw hole 12 and special-shaped slotted eye 17 (in this embodiment, also have installing hole 18 and output with valve opening 19) corresponding core rod 6 ' a and 6 ' b (here, also comprise and installing hole 18 and output with valve opening 19 corresponding core rod parts), form simultaneously the female shell mould 6 ' of basic blank 10 usefulness of boss 6 ' d around.In addition, in this embodiment, the core rod 8 in above-mentioned first embodiment, the dead eye moulding hole 1 ' J by forming on the circular cylinder shaped portion of master mold 1 ' forms as one with female shell mould 6 '.
(4) then, as shown in Figure 8, smooth die face is combined on the open surface of extracting the female shell mould 6 ' under master mold 1 state, first sandbox 2 is contained on the female shell mould 6 ', by casting in the basic blank 10 that forms part with holes in the female shell mould 6 '.In addition, in this embodiment, female shell mould 6 ' is housed in the box-shaped shaper 20 of other preparation under the state that boss 6 ' d is placed on the open edge 20a.Among the space 20b in shaper 20, filling greensand etc. remain on female shell mould 6 ' in the shaper 20.The liquation here is meant, for example have the general characteristic in JIS5501, stipulated, promptly by the S of the P of Mn, the 0.03～0.15wt% of Si, the 0.5～1.0wt% of C, the 1.5～3.0wt% of 2.5～3.8wt% and 0.05～1.15wt%, and other grey cast-iron that constitutes for Fe.
Like this, after constituting basic blank 10, identical with first embodiment (with reference to Fig. 5), end face (installed surface of an opposite side with boss portion) to flange section 11 carries out machining, if necessary, clear up special-shaped slotted eye 17 with End Milling Process, installing hole 18 and output are carried out fine finishining with valve opening 19 with reamer.In addition, also to carry out fine finishining to dead eye 14.Moreover, owing to utilize the shell mould on flange section 11, to form screw hole 12, therefore do not need back processing with correct position and size.Like this, if in the shell mould 6 ' by 2 sealings of first sandbox, form basic blank 10, then the back processing of the foundry goods before finishing part with holes can be oversimplified or omit.
The invention effect
As mentioned above, the present invention is that to be manufactured on an end face be the screw hole that has the assembling usefulness that the spacing with regulation forms on the smooth flange section, the method that has the part with holes of special-shaped slotted eye simultaneously, when forming the basic blank of part with holes by casting, with the precision of afore mentioned rules spacing based on the basic blank of casting, form the master mold of part with holes, when forming this master mold, corresponding with an end face of above-mentioned flange section, one or additionally constitute the back side portion of the die face be equivalent to first sandbox, corresponding with above-mentioned master mold, prepare second master mold, to in the particulate silica sand, disperse, the resin sand that the thermosetting resin of mixing 2～5% forms is filled in the die cavity that forms between master mold, heat this resin sand, make the resin solidification of above-mentioned resin sand, be formed in the female shell mould of the basic blank of inner formation and above-mentioned screw hole and the corresponding core rod of special-shaped slotted eye, smooth die face is combined on the open surface of extracting the female shell mould under the above-mentioned master mold state, first sandbox is contained on the above-mentioned female shell mould, by casting in the basic blank that forms part with holes in the above-mentioned female shell mould.
In addition, the present invention, with the precision of afore mentioned rules spacing based on the basic blank of casting, form the master mold of part with holes, when forming this master mold, corresponding with an end face of above-mentioned flange section, one or additionally constitute the back side portion of the die face be equivalent to first sandbox, to in the particulate silica sand, disperse, the resin sand that the thermosetting resin of mixing 2～5% forms, be seated in second sandbox of box-shaped, by pre-heated above-mentioned master mold is pressed in second sandbox, utilize the part that contacts with the surface of the above-mentioned master mold that comprises above-mentioned back side portion, make resin solidification heatedly, be formed in the female shell mould of the basic blank of inner formation and above-mentioned screw hole and the corresponding core rod of special-shaped slotted eye, smooth die face is combined on the open surface of extracting the female shell mould under the above-mentioned master mold state, first sandbox is contained on the above-mentioned female shell mould, by casting in the basic blank that forms part with holes in the above-mentioned female shell mould.
Therefore,, also the back processing such as processing, slotting cutter processing of holing can be omitted to few, and the situation of invading the agglomerated material in the pore with use permission processing wet goods is different, can have the advantage of the dense casting of structure although be the employing casting.
Claims (4)
1. the manufacture method of a part with holes, this part with holes at one end face are the screw hole that has the assembling usefulness that forms with prescribed distance on the smooth flange section, have special-shaped slotted eye simultaneously, it is characterized in that:
(1) when forming the basic blank of part with holes,, forms the master mold of part with holes with precision based on the described prescribed distance of the basic blank of casting by casting;
(2) when forming master mold, corresponding with an end face of described flange section, one or additionally constitute the back side portion of the die face that is equivalent to first sandbox;
(3) corresponding with described master mold, prepare second master mold, to in the particulate silica sand, disperse, mix 2～5% the resulting resin sand of thermosetting resin, be filled in the die cavity that between master mold, forms, heat this resin sand, make the resin solidification of described resin sand, be formed in the female shell mould of the basic blank of inner formation and described screw hole and the corresponding core rod of special-shaped slotted eye;
(4) smooth die face is combined on the open surface of extracting the female shell mould under the described master mold state, first sandbox is contained on the described female shell mould, by casting in the basic blank that forms part with holes in the described female shell mould.
2. the manufacture method of a part with holes, this part with holes at one end face are the screw hole that has the assembling usefulness that forms with prescribed distance on the smooth flange section, have special-shaped slotted eye simultaneously, it is characterized in that:
(1) when forming the basic blank of part with holes,, forms the master mold of part with holes with precision based on the described prescribed distance of the basic blank of casting by casting;
(2) when forming master mold, corresponding with an end face of described flange section, one or additionally constitute the back side portion of the die face that is equivalent to first sandbox;
(3) will in the particulate silica sand, disperse, mix the resin sand of 2～5% thermosetting resin, be seated in second sandbox of box-shaped, by pre-heated described master mold is pressed in second sandbox, utilize surperficial contacted part with the described master mold that comprises described back side portion, make resin solidification heatedly, be formed in the female shell mould of the basic blank of inner formation and described screw hole and the corresponding core rod of special-shaped slotted eye;
(4) smooth die face is combined on the open surface of extracting the female shell mould under the described master mold state, first sandbox is contained on the described female shell mould, by casting in the basic blank that forms part with holes in the described female shell mould.
3. the manufacture method of part with holes as claimed in claim 1 or 2 is characterized in that:
In casting when the flange section of described part with holes forms the basic blank of the axis hole that connects, on the position suitable with described axis hole, form the localization part that core rod is installed usefulness in described master mold one side in advance, columned core rod is placed in the described female shell mould.
4. part with holes, it is characterized in that: it is a manufacture method of utilizing each described part with holes in the claim 1～3, in first and second sandboxes, by the female shell mould moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03136997 CN1257782C (en) | 2003-05-26 | 2003-05-26 | Pored component and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03136997 CN1257782C (en) | 2003-05-26 | 2003-05-26 | Pored component and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1552541A CN1552541A (en) | 2004-12-08 |
| CN1257782C true CN1257782C (en) | 2006-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03136997 Expired - Fee Related CN1257782C (en) | 2003-05-26 | 2003-05-26 | Pored component and manufacturing method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN1257782C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310161A (en) * | 2011-05-19 | 2012-01-11 | 大连金河铸造有限公司 | Combined model used for casting |
| CN103978157A (en) * | 2014-05-27 | 2014-08-13 | 苏州市诚键法兰制造有限公司 | Convenient flange replacing mold |
| CN104923727B (en) * | 2015-05-15 | 2017-05-31 | 中国航空工业集团公司北京航空材料研究院 | Titanium or titanium alloy casting sand mould casting method with irregularly-shaped inner hole |
| WO2018103049A1 (en) * | 2016-12-08 | 2018-06-14 | 王树军 | Integrated casting flange and manufacturing process thereof |
| CN112191804A (en) * | 2020-10-20 | 2021-01-08 | 含山县港鉴峰铸造厂(普通合伙) | Handheld lost foam casting auxiliary equipment and casting method |
| CN114247850A (en) * | 2021-12-10 | 2022-03-29 | 云南锡业锡材有限公司 | One-step forming production method of tin plate with forming hole |
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2003
- 2003-05-26 CN CN 03136997 patent/CN1257782C/en not_active Expired - Fee Related
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| CN1552541A (en) | 2004-12-08 |
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