CN102672414A - Method for combining cylinder head and cylinder barrel - Google Patents
Method for combining cylinder head and cylinder barrel Download PDFInfo
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- CN102672414A CN102672414A CN201210183316XA CN201210183316A CN102672414A CN 102672414 A CN102672414 A CN 102672414A CN 201210183316X A CN201210183316X A CN 201210183316XA CN 201210183316 A CN201210183316 A CN 201210183316A CN 102672414 A CN102672414 A CN 102672414A
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- cylinder
- cylinder barrel
- cylinder head
- barrel
- combined method
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Abstract
The invention provides a method for combining a cylinder head and a cylinder barrel. The method comprises the following steps of a heating and cooling step (S01): heating the cylinder head to K1 which is larger than or equal to 250 DEG C and smaller than or equal to 320 DEG C, and cooling the cylinder barrel to K2 which is smaller than or equal to -180 DEG C; and a connection step (S02): screwing the cylinder barrel into the cylinder head. The method for combining the cylinder head and the cylinder barrel solves the problem of difficult combination of the cylinder head and the cylinder barrel which are matched in a large interference magnitude mode, and achieves the effect that the cylinder head and the cylinder barrel can be simply, conveniently and fast screwed in place.
Description
Technical field
The present invention relates to mechanical manufacturing field, more specifically, relate to the combined method of a kind of cylinder head and cylinder barrel.
Background technology
In the prior art combination of cylinder head and cylinder barrel the time, in the time of the cylinder head that especially cooperates when the big magnitude of interference and the combination of cylinder barrel, earlier cylinder head is put into electric furnace and be heated to about 270 ℃, and be incubated 30min; Again in the refrigerator and cooled that is added with ice and salt but, insulation 50min with cylinder barrel; Be loaded on cylinder head on the special fixture rapidly then, again cylinder barrel screwed in the cylinder head fast, with extension bar rotary cylinder tube until screwing.
This method requires to require in 0.5 minute, to accomplish from the screwing of cylinder barrel that be fetched into of cylinder head, otherwise the cylinder head and the cylinder barrel temperature difference dwindle, and difficulty even can't make up and put in place causes screwing at last.The qualification rate of this clustered operation is not high, is difficult to satisfy fully the production demand.
Summary of the invention
The invention provides the combined method of a kind of cylinder head and cylinder barrel, purpose is to solve the difficult problem of the gentle cylinder combination of cylinder head that the big magnitude of interference cooperates.
The invention provides the combined method of a kind of cylinder head and cylinder barrel, may further comprise the steps: the heating cooling step, cylinder head is heated to K1,250 ℃≤K1≤320 ℃, cylinder barrel is cooled to K2, K2≤-180 ℃; Connection Step screws in cylinder barrel in the cylinder head.
Further, in the heating cooling step cylinder barrel being put into liquid oxygen cools off.
Further, also comprise: the sealing step is coated with fluid sealant on the thread surface of the cylinder barrel that takes out behind the heating cooling step.
Further, K1=290 ℃.
Further, the duration of cylinder head heating is T1 in the heating cooling step, 30min≤T1≤60min.
Further, the duration of cylinder barrel cooling is T2 in the heating cooling step, 10min≤T2≤60min.
Further, T1=30min.
Further, T2=10min.
Further, fluid sealant is a screw thread glue.
The combined method of cylinder head of the present invention and cylinder barrel; Through the heating process in the heating cooling step; Be heated to more than 250 ℃ cylinder head and below 320 ℃; Through the cooling procedure of heating in the cooling step, cylinder barrel is cooled to below-180 ℃ then, at last again with cylinder head and cylinder barrel matched in clearance together through Connection Step; Solved the problem of the gentle cylinder combination difficulty of cylinder head that the big magnitude of interference cooperates, reached cylinder head and cylinder barrel screw simple and efficient, make up the effect that puts in place.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of steps according to first embodiment of the combined method of cylinder head of the present invention and cylinder barrel; And
Fig. 2 is the flow chart of steps according to second embodiment of the combined method of cylinder head of the present invention and cylinder barrel.
The specific embodiment
Below with reference to accompanying drawing and combine embodiment to specify the present invention.
First embodiment of the cylinder head of the present invention as shown in Figure 1 and the combined method of cylinder barrel may further comprise the steps: heating cooling step S01 and Connection Step S02.
Wherein, the heating process among the heating cooling step S01 is that cylinder head is heated to K1; As can in electric furnace, heat; 250 ℃≤K1≤320 ℃, preferably, K1=290 ℃; This temperature both can guarantee that cylinder head heat expansion degree met the standard of assembling, can guarantee the Product Safety of cylinder head when heat expansion that heats again; Cooling procedure among the heating cooling step S01 is that cylinder barrel is cooled to K2, K2≤-180 ℃, and this temperature both can guarantee that cylinder barrel shrinkage degree met the standard of assembling, can guarantee the Product Safety of cylinder barrel when shrinkage of shrinkage again; Connection Step S02 after cylinder head and cylinder barrel are respectively through heating and cooling, screws in cylinder barrel in the cylinder head, and cylinder head and cylinder barrel change matched in clearance into by interference fit.
The combined method of cylinder head of the present invention and cylinder barrel through the heating process among the heating cooling step S01, is heated to more than 250 ℃ cylinder head and below 320 ℃; Then through the cooling procedure among the heating cooling step S01; Cylinder barrel is cooled to below-180 ℃, through Connection Step S02 cylinder barrel is screwed in the cylinder head more at last, cylinder head and cylinder barrel matched in clearance are together; It is longer that the temperature difference of the cylinder head that heats in this combined method and the cylinder barrel of cooling is dwindled the time that needs; It is longer to be that the temperature difference is difficult for dwindling time of maintenance, so it is more abundant to make up the used time, can extend to 1 minute; Solved the problem of the gentle cylinder combination difficulty of cylinder head that the big magnitude of interference cooperates, reached cylinder head and cylinder barrel screw simple and efficient, make up the effect that puts in place.
The duration of cylinder head heating is T1 among the heating cooling step S01,30min≤T1≤60min.Preferably, T1=30min.Be 30min the duration of heat, and cylinder head at this moment can be heated to about 290 ℃, and this temperature both can guarantee that cylinder head heat expansion degree met the standard of assembling, can guarantee the Product Safety of cylinder head when heat expansion that heats again.
The duration of cylinder barrel cooling is T2 among the heating cooling step S01,10min≤T2≤60min, preferably, T2=10min.Cool and add temperature-sensitive ingredients is 10min, and cylinder barrel at this moment can be cooled to about-180 ℃, and this temperature both can guarantee that cylinder barrel shrinkage degree met the standard of assembling, can guarantee the Product Safety of cylinder barrel when shrinkage of shrinkage again.
Preferably, the liquid oxygen of among the heating cooling step S01 cylinder barrel being put into incubator cools off.Cylinder barrel is put into the liquid oxygen cooling raio cylinder barrel is placed on to be added with ice lower with the temperature that the refrigerator and cooled of salt but obtains, and temperature retention time is short, cooling soon is easy to control.Because the chilling temperature of liquid nitrogen also can reach-180 ℃, also can replace liquid oxygen with liquid nitrogen.
Preferably, the cylinder head material is ZL242A.Preferably, the cylinder barrel material is 38CrMoAlA.
In first kind of preferred embodiment provided by the invention; The interference through the sealing interference screw thread and the band of obturaging of cylinder head and cylinder barrel cooperates and plays sealing function; When the special magnitude of interference when cylinder head and cylinder barrel is big, be 0.31-0.50 like the magnitude of interference, can be through the mode of electric furnace heat air cylinder head and liquid oxygen cold gas cylinder barrel; Cylinder head and cylinder barrel change matched in clearance into by the interference cooperation, could carry out component parts comparatively smoothly.Simple to operate like this, convenient, fast.It is more abundant to make up the used time, can extend to 1 minute by original 0.5 minute.
Particularly, the gentle cylinder combination operating process of cylinder head can be put into the electric furnace heating for: cylinder head, and every stove can be adorned 20-30 spare; Cylinder barrel immerses in the liquid oxygen lowers the temperature; Taking out cylinder head about half an hour is fixed on the anchor clamps; Take out cylinder barrel simultaneously; Cylinder barrel is screwed in the cylinder head fast, and screw with extension bar.Such combined method has solved the problem of the gentle cylinder combination difficulty of cylinder head that the big magnitude of interference cooperates, reached cylinder head and cylinder barrel screw simple and efficient, make up the effect that puts in place.And then ground, also improved the qualification rate of clustered operation.
Second embodiment of the cylinder head of the present invention as shown in Figure 2 and the combined method of cylinder barrel; With first kind of preferred embodiment difference do; Also comprise sealing step S03; S03 is between heating cooling step S01 and Connection Step S02 for the sealing step, promptly on the thread surface of the cylinder barrel that takes out behind the heating cooling step S01, is coated with fluid sealant.It is better that gluing can make sealing property on the thread surface of cylinder barrel, can avoid producing the phenomenon of leakage of oil.
Preferably, fluid sealant is a screw thread glue.Preferably, can select the XJ-62 screw thread glue of better performances for use.Certainly can also select screw thread glue such as XJ-34, LOCTITE640, LOCTITE277 and LOCTITE272.
Particularly; The difference of the combination operation process of the gentle cylinder combination operating process of the cylinder head of second kind of preferred embodiment and first kind of preferred embodiment is: when taking out cylinder barrel; Screw thread place at cylinder barrel coats fluid sealant, and then cylinder barrel is screwed in the cylinder head fast.
Above-mentioned two embodiment provided by the invention are particularly useful for the combination that cylinder head and cylinder barrel in the aviation part processing process carry out.
From above description, can find out that the above embodiments of the present invention have realized following technique effect:
1, screw simple and efficient, the combination of the cylinder head that cooperates of the big magnitude of interference and cylinder barrel puts in place;
2, improved the qualification rate of clustered operation;
3, it is lower at salt refrigerator chilling temperature cylinder barrel to be put into the liquid oxygen cooling raio, and temperature retention time is short, is easy to control;
4, gluing can make sealing property better on the cylinder barrel external screw thread;
5, used time of combination more abundant, can extend to 1 minute.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the combined method of cylinder head and cylinder barrel is characterized in that, may further comprise the steps:
Heating cooling step (S01) is heated to K1 with said cylinder head, 250 ℃≤K1≤320 ℃, said cylinder barrel is cooled to K2, K2≤-180 ℃;
Connection Step (S02) screws in said cylinder barrel in the said cylinder head.
2. the combined method of cylinder head according to claim 1 and cylinder barrel is characterized in that, in the said heating cooling step (S01) said cylinder barrel is put into liquid oxygen and cools off.
3. the combined method of cylinder head according to claim 1 and cylinder barrel is characterized in that, also comprises:
Sealing step (S03) is coated with fluid sealant on the thread surface of the said cylinder barrel that behind said heating cooling step (S01), takes out.
4. the combined method of cylinder head according to claim 1 and cylinder barrel is characterized in that, K1=290 ℃.
5. the combined method of cylinder head according to claim 1 and cylinder barrel is characterized in that, the duration of the heating of cylinder head described in the said heating cooling step (S01) is T1,30min≤T1≤60min.
6. according to the combined method of claim 1 or 5 described cylinder heads and cylinder barrel, it is characterized in that the duration of the cooling of cylinder barrel described in the said heating cooling step (S01) is T2,10min≤T2≤60min.
7. the combined method of cylinder head according to claim 5 and cylinder barrel is characterized in that T1=30min.
8. the combined method of cylinder head according to claim 6 and cylinder barrel is characterized in that T2=10min.
9. the combined method of cylinder head according to claim 3 and cylinder barrel is characterized in that, said fluid sealant is a screw thread glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210183316XA CN102672414A (en) | 2012-06-05 | 2012-06-05 | Method for combining cylinder head and cylinder barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210183316XA CN102672414A (en) | 2012-06-05 | 2012-06-05 | Method for combining cylinder head and cylinder barrel |
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| Publication Number | Publication Date |
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| CN102672414A true CN102672414A (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210183316XA Pending CN102672414A (en) | 2012-06-05 | 2012-06-05 | Method for combining cylinder head and cylinder barrel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678360A (en) * | 2018-04-17 | 2018-10-19 | 绍兴明煌建材科技有限公司 | A kind of slip casting screw connecting structure and processing, method for dismounting |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3190681A (en) * | 1961-07-24 | 1965-06-22 | Philips Corp | Combination of two members shrunk on each with the interposition of a sleeve |
| US4182019A (en) * | 1971-07-26 | 1980-01-08 | The Goodyear Tire & Rubber Company | Method for making corrugated hose |
| SU1148750A1 (en) * | 1982-07-28 | 1985-04-07 | Предприятие П/Я А-3881 | Method of thermal assembly of two-layer cylindrical shells |
| JPS6094230A (en) * | 1983-10-31 | 1985-05-27 | Toyota Motor Corp | Method of manufacturing cylinder block |
| US4653161A (en) * | 1984-12-05 | 1987-03-31 | Industrias Mediterraneo, S.A. | Manufacture process for aluminum alloy die-cast cylinders |
| CN1414252A (en) * | 2002-10-14 | 2003-04-30 | 哈尔滨工业大学 | Internal pressure connecting method of two individual pieces |
| CN101428385A (en) * | 2007-11-06 | 2009-05-13 | 贵州红林机械有限公司 | Non-pressure sleeve pressing process |
| CN102248356A (en) * | 2011-06-21 | 2011-11-23 | 温州市中力阀门有限公司 | Rapid assembly process of integrated high-pressure hard seal ball valve seat |
-
2012
- 2012-06-05 CN CN201210183316XA patent/CN102672414A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3190681A (en) * | 1961-07-24 | 1965-06-22 | Philips Corp | Combination of two members shrunk on each with the interposition of a sleeve |
| US4182019A (en) * | 1971-07-26 | 1980-01-08 | The Goodyear Tire & Rubber Company | Method for making corrugated hose |
| SU1148750A1 (en) * | 1982-07-28 | 1985-04-07 | Предприятие П/Я А-3881 | Method of thermal assembly of two-layer cylindrical shells |
| JPS6094230A (en) * | 1983-10-31 | 1985-05-27 | Toyota Motor Corp | Method of manufacturing cylinder block |
| US4653161A (en) * | 1984-12-05 | 1987-03-31 | Industrias Mediterraneo, S.A. | Manufacture process for aluminum alloy die-cast cylinders |
| CN1414252A (en) * | 2002-10-14 | 2003-04-30 | 哈尔滨工业大学 | Internal pressure connecting method of two individual pieces |
| CN101428385A (en) * | 2007-11-06 | 2009-05-13 | 贵州红林机械有限公司 | Non-pressure sleeve pressing process |
| CN102248356A (en) * | 2011-06-21 | 2011-11-23 | 温州市中力阀门有限公司 | Rapid assembly process of integrated high-pressure hard seal ball valve seat |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678360A (en) * | 2018-04-17 | 2018-10-19 | 绍兴明煌建材科技有限公司 | A kind of slip casting screw connecting structure and processing, method for dismounting |
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Application publication date: 20120919 |