CN101117901A - Fixing method for air valve seat and special mould therefor - Google Patents
Fixing method for air valve seat and special mould therefor Download PDFInfo
- Publication number
- CN101117901A CN101117901A CNA2007101315386A CN200710131538A CN101117901A CN 101117901 A CN101117901 A CN 101117901A CN A2007101315386 A CNA2007101315386 A CN A2007101315386A CN 200710131538 A CN200710131538 A CN 200710131538A CN 101117901 A CN101117901 A CN 101117901A
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- valve seat
- cylinder
- cone knife
- annular
- ring
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Abstract
The present invention provides a method for fixing a valve seat, and includes steps as follow: a. the valve seat is put into a hole left previously the engine case body and the bottom of the valve seat is lower than the surface of the engine body; b. a mould with a ring-shaped cone knife surface is arranged to aim at the surrounding case surface of the valve seat; c. with being driven by a driving device, the cone knife surface is pressed into the engine case body to form a ring-shaped flange pressing towards the valve seat and a ring-shaped groove around the valve seat; the special mould adopted by the method for fixing valve seat of the present invention comprises a valve seat body; the top part of the valve seat body is provided with the ring-shaped cone knife surface; the diameter of the cone knife surface is bigger than that of the valve seat body; and the valve seat body is driven by a general driving device. According to the method for fixing valve seat of the present invention, the valve seat can be firmly fixed on the engine case body, and can not loose or take off due to different heated deformations of different material, thereby improving the working stability of the gasoline engine. The special tools used in the method of the present invention are simple in structure.
Description
Technical field
The present invention relates to a kind of fixation method and specialized mould thereof of valve seat of fixation method and specialized mould thereof, particularly a kind of general gasoline engines of valve seat.
Background technique
The side-located gas-gate general gasoline engines is a kind of petrol engine that valve is arranged in cylinder one side.The cylinder of general gasoline engines is generally used the aluminum alloy material manufacturing, and valve seat is then generally used the iron-base powder metallurgy material manufacturing.Cylinder is reserved the hole of placing valve seat when die casting, then valve seat is pressed in the preformed hole.Because cylinder is different with the valve seat material therefor, thereby at high temperature heat distortion amount is variant after the petrol engine work, makes valve seat be easy to generate loosening or comes off, and causes the motor cisco unity malfunction.
Summary of the invention
Goal of the invention: the object of the invention provides a kind of fixation method of valve seat, uses this method can prevent effectively that tank material and Materials for Valve Seat from taking place to become flexible or come off under the different situation of thermal distortion, thereby makes engine operation more reliable.
Another object of the present invention provides a kind of specialized mould of valve seat fixation method.
Technological scheme: the fixation method of valve seat of the present invention may further comprise the steps:
A, valve seat is put into the hole that cylinder is reserved, and make the end face of valve seat be lower than the surface of cylinder;
B, will have the cylinder surface of mold alignment valve seat periphery of the circular cone knife face of annular;
C, under the driving of drive unit, the circular cone knife face is pressed in the cylinder, forms an annular flange flange and an annular groove of pressing to valve seat at valve seat periphery.
The specialized mould that valve seat fixation method of the present invention is used comprises body, is provided with the circular cone knife face of annular at the top of body, and the diameter of this circular cone knife face is greater than the external diameter of valve seat, and body is by common drive mechanism.
In order to improve the accuracy that the circular cone knife face is pressed into, in the circular cone knife face circle of annular, be provided with a positioning rod that can insert the valve seat endoporus.
Working principle of the present invention is: after valve seat is put into the cylinder preformed hole, by specialized mould the cylinder surface of valve seat periphery is carried out extrusion process, the aluminum alloy material of valve seat cylinder is on every side deformed, form an annular flange flange and an annular groove of pressing to valve seat, and make the compactness extent of the cylinder material around the valve seat that certain variation take place.These distortion and variation have produced along the radial and axial power of valve seat, so better fixed air gate seat valve seat.
Beneficial effect: by fixation method of the present invention, valve seat can be securely fixed on the cylinder of motor, and can not produce the phenomenon that valve seat is loosening or come off, thereby improve the stability of petrol engine work owing to the different pyrogenicity distortion of material are different.Employed special tool is simple in structure.
Description of drawings
Fig. 1 is the sectional view of valve seat when being pressed into the cylinder preformed hole.
Fig. 2 is the sectional view of mould when beginning to contact cylinder.
Fig. 3 is the sectional view around the valve seat after the mould extrusion process.
Fig. 4 is near the sectional view of valve seat after the extrusion process.
Embodiment
As Fig. 1, the valve seat 1 of hard powdered metallurgical material is pressed in the preformed hole 3 of cylinder 2 of aluminum alloy material, the end face of valve seat 1 is lower than cylinder 2 surfaces, and the bottom of valve seat 1 places on the step of preformed hole 3.
As Fig. 2, the mould of circular cone knife face 4 that will have annular is installed on the gas manometer that has calculated pressure, and the positioning rod 7 that the mould bottom is used to locate usefulness inserts in the hole of valve seats, starts aerostatic press and makes it drive die presses down to go into cylinder 2, make it reach certain extruding degree of depth, as shown in Figure 3.Since the extruding formed the flange of pressing to valve seat 5 of an annular and the groove 6 of an annular, and valve seat around cylinder material because the extruding, variation has taken place in its density degree.
Claims (3)
1. the fixation method of a valve seat is characterized in that this method may further comprise the steps:
(a) valve seat (1) is put into the hole (3) that cylinder (2) is reserved, and made the end face of valve seat (1) be lower than the surface of cylinder (2);
(b) will have the cylinder surface of mold alignment valve seat periphery of the circular cone knife face (4) of annular;
(c) under the driving of drive unit, circular cone knife face (4) is pressed in the cylinder (2), at an annular flange flange (5) and annular groove (6) of pressing to valve seat of periphery formation of valve seat (1).
2. the specialized mould of valve seat fixation method as claimed in claim 1 is characterized in that it comprises body, is provided with the circular cone knife face (4) of annular at the top of body, and the diameter of this circular cone knife face (4) is greater than the external diameter of valve seat, and body is by drive mechanism.
3. the specialized mould of valve seat fixation method according to claim 2 is characterized in that being provided with a positioning rod (7) that can insert the valve seat endoporus in the circle of the circular cone knife face (4) of annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101315386A CN100526613C (en) | 2007-09-04 | 2007-09-04 | Fixing method for air valve seat and special mould therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101315386A CN100526613C (en) | 2007-09-04 | 2007-09-04 | Fixing method for air valve seat and special mould therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101117901A true CN101117901A (en) | 2008-02-06 |
| CN100526613C CN100526613C (en) | 2009-08-12 |
Family
ID=39054145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101315386A Expired - Fee Related CN100526613C (en) | 2007-09-04 | 2007-09-04 | Fixing method for air valve seat and special mould therefor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100526613C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116211A (en) * | 2009-11-05 | 2011-07-06 | 通用汽车环球科技运作公司 | Cylinder head assembly for an internal combustion engine and method of manufacturing the same |
| CN104806373A (en) * | 2015-03-27 | 2015-07-29 | 中国北方发动机研究所(天津) | Internal combustion engine valve seat ring locking mechanism and locking method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2773587B1 (en) * | 1998-01-15 | 2000-03-17 | Renault | METHOD OF FIXING A VALVE SEAT ON THE CYLINDER HEAD OF AN ENGINE |
| JP4178758B2 (en) * | 2001-02-08 | 2008-11-12 | 株式会社豊田自動織機 | Joint structure of valve seat |
| CN101024232B (en) * | 2007-03-31 | 2011-11-09 | 重庆工学院 | Composite extruding fine-punching formation method and mould for processing low-plasticity or thick-plate parts |
-
2007
- 2007-09-04 CN CNB2007101315386A patent/CN100526613C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116211A (en) * | 2009-11-05 | 2011-07-06 | 通用汽车环球科技运作公司 | Cylinder head assembly for an internal combustion engine and method of manufacturing the same |
| CN104806373A (en) * | 2015-03-27 | 2015-07-29 | 中国北方发动机研究所(天津) | Internal combustion engine valve seat ring locking mechanism and locking method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100526613C (en) | 2009-08-12 |
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| C06 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NANJING JINCHENG ELECTRIC VEHICLE CO., LTD. Free format text: FORMER OWNER: JINCHENG MACHINERY CO., LTD., NANJING Effective date: 20150113 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 210002 NANJING, JIANGSU PROVINCE TO: 211121 NANJING, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20150113 Address after: Raj road cooked Industrial Park Jiangning Lake in Nanjing city Jiangsu province 211121 No. 518 Patentee after: Nanjing Jincheng Electric Vehicle Co., Ltd. Address before: 210002 Zhongshan East Road, Jiangsu, China, No. 518, No. Patentee before: Nanjing Jincheng Machinery Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090812 Termination date: 20190904 |