CN110439647B - Automobile engine spring holder and cold heading former of this spring holder - Google Patents
Automobile engine spring holder and cold heading former of this spring holder Download PDFInfo
- Publication number
- CN110439647B CN110439647B CN201910829406.3A CN201910829406A CN110439647B CN 110439647 B CN110439647 B CN 110439647B CN 201910829406 A CN201910829406 A CN 201910829406A CN 110439647 B CN110439647 B CN 110439647B
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- China
- Prior art keywords
- cold heading
- seat
- connecting hole
- hole
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000013016 damping Methods 0.000 claims abstract description 34
- 238000001125 extrusion Methods 0.000 claims description 38
- 238000004080 punching Methods 0.000 claims description 15
- 238000007493 shaping process Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 2
- 230000035939 shock Effects 0.000 abstract description 15
- 238000010521 absorption reaction Methods 0.000 abstract description 7
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/08—Accessories for handling work or tools
- B21J13/14—Ejecting devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
- F01L1/462—Valve return spring arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Springs (AREA)
- Forging (AREA)
Abstract
The invention belongs to the technical field of machinery, and relates to an automobile engine spring seat and cold heading forming equipment of the spring seat, which solve the technical problems of poor shock absorption performance and the like of the existing spring seat. The spring seat comprises a body, wherein one end of the body extends outwards along the radial direction of the body to form an annular boss, and one end of the valve spring can be propped against the boss; the novel damping device is characterized in that a coaxial mounting hole, a first damping hole and a second damping hole are sequentially formed in the center of the body, the mounting hole can be used for being matched with a valve rod of a valve, the aperture of the first damping hole is smaller than that of the second damping hole, and a step surface for placing a damping pad is formed between the first damping hole and the second damping hole. When the valve spring is used, the valve spring can be sleeved and abutted against the boss, the shock pad is placed in the first shock absorption hole and the shock absorption Kong Erna, then the valve rod is arranged in the mounting hole, and the shock pad can absorb impact and vibration generated during working, so that vibration and noise are effectively reduced.
Description
Technical Field
The invention belongs to the technical field of machinery, and relates to an automobile engine spring seat and cold heading forming equipment of the spring seat.
Background
Valve spring seats are an important part in engine valve trains, which are generally cylindrical and have two steps with a central through hole in the interior. At present, two main methods for machining and forming valve spring seats are available: one is to cut or mill a corresponding step on a formed cylindrical blank and then punch a hole; the other is through cold heading shaping, cuts steel into a quarter after, carries out cold heading shaping through a plurality of cold heading stations again in proper order, and because current every cold heading station all is working under respective power supply, equipment is whole comparatively complicated, and a plurality of cold heading stations can't synchronous operation, production efficiency is lower.
In order to solve the problems, patent CN 107952921A in China discloses a valve spring seat cold heading forming device, which comprises a machine base, wherein a steel cutting station and a plurality of cold heading stations are arranged on the machine base side by side, a mold core and an extrusion ejector rod are arranged on each cold heading station, a concave cavity matched with the corresponding extrusion ejector rod is arranged on each mold core, a concave cavity ejector rod for ejecting a formed blank is further arranged in each concave cavity, a blank transmission device is further arranged among the plurality of cold heading stations, the blank device comprises a mounting seat, a clamping head is arranged between every two adjacent cold heading stations correspondingly, and the mounting seat is connected to the machine base through a swing arm.
The structure can ensure synchronous operation of a plurality of cold heading stations through sharing the driving source so as to improve production efficiency. However, due to the processing precision error of the parts or the different sizes of the spring seats to be processed, the concave cavity ejector rod at the fixed position may have the problem that the blank cannot be ejected, and the extrusion ejector rod at the fixed position may also have the condition that the workpiece with the expected shape cannot be extruded. In addition, when current spring holder in-service use, vibrations and noise that produce are also great.
Disclosure of Invention
The invention aims at the problems existing in the prior art, and provides an automobile engine spring seat, and the first technical problem to be solved by the invention is as follows: how to reduce vibration and noise generated when the spring seat is used.
The first object of the present invention can be achieved by the following technical scheme:
the spring seat of the automobile engine comprises a body, wherein one end of the body extends outwards along the radial direction of the body to form an annular boss, and one end of a valve spring can be abutted against the boss; the novel valve is characterized in that a coaxial mounting hole, a first damping hole and a second damping hole are sequentially formed in the center of the body, the mounting hole can be used for being matched with a valve rod of a valve, the aperture of the first damping hole is smaller than that of the second damping hole, and a step surface for placing a damping pad is formed between the first damping hole and the second damping hole.
The working principle is as follows: when the valve spring is used, the valve spring can be sleeved and abutted against the boss, the shock pad is placed in the first shock absorption hole and the shock absorption Kong Erna, then the valve rod is arranged in the mounting hole, and the shock pad can absorb impact and vibration generated during working, so that vibration and noise are effectively reduced.
The invention aims at the problems existing in the prior art, and provides cold heading forming equipment for the spring seat, which aims at solving the second technical problem that: how to process the spring seat with good damping performance, and can compensate the errors of equipment parts and the requirements of various length and size of the spring seat.
The second object of the present invention can be achieved by the following technical scheme:
the cold heading forming equipment of the spring seat is characterized by comprising a machine base, wherein 7 cold heading stations are arranged on the machine base at intervals, and the 7 cold heading stations are a shaping station, a upsetting station, a step forming station, a punching station I, a punching station II, a punching station III and a shaping station in sequence; each cold heading station comprises a mold core and an extrusion ejector rod, a concave cavity matched with the extrusion ejector rod is formed in the mold core, and the length of the extrusion ejector rod is adjustable.
The working principle is as follows: when the spring seat is used, the cut cylindrical steel is gradually formed into the spring seat through the 7 cold heading stations, wherein the first punching station, the second punching station and the third punching station are sequentially used for cutting the mounting hole, the first damping hole and the second damping hole, and therefore the spring seat with good damping performance is formed. In addition, because the length of the extrusion ejector rod is adjustable, even if certain precision errors exist in parts of cold heading equipment or the dimensional requirements of the spring seat on the length are different, the cold heading equipment can be processed by adjusting the length of the extrusion ejector rod.
In the cold heading forming device of the spring seat, the cold heading forming device further comprises a first linear driving source, a first driving seat is fixed at the output end of the first linear driving source, and the inner end of the extrusion ejector rod is arranged on the first driving seat. The linear driving source is moved to drive the extrusion ejector rods to move into the concave cavities of the mold cores at the same time, so that blanks are processed.
In the cold heading forming device of the spring seat, the extrusion ejector rod comprises a fixing seat, a rod body and an extrusion head, wherein the fixing seat is fixed on the first driving seat, a first connecting hole and a second connecting hole which are communicated with each other are formed in the fixing seat, the section of the first connecting hole at the inner end is square, the section of the second connecting hole at the outer end is circular, the section of the inner half part of the rod body is square and in sliding fit with the first connecting hole, the section of the outer half part of the rod body is circular and in sliding fit with the second connecting hole, a driving device capable of driving the rod body to linearly move is arranged on the end face of the fixing seat, and the extrusion head is fixed on the outer end face of the rod body. The rod body is driven to move through the driving device, so that the extrusion head is driven to move, and the length of the whole extrusion top rod is adjusted.
In the cold heading forming device of the spring seat, the driving device comprises an adjusting nut which is rotatably arranged at the outer end face of the fixing seat, and the outer half side wall of the rod body is provided with an external thread which is in threaded fit with the adjusting nut. The adjusting nut is rotated to drive the rod body to move along the linear direction, and meanwhile, the rod body cannot deflect due to the limiting relationship between the inner half part of the rod body and the first connecting hole, so that the extrusion head and the concave cavity on the die core can be always corresponding.
In the cold heading forming equipment of the spring seat, a third connecting hole which is aligned with and communicated with the second connecting hole is formed in the end face of the fixing seat, an annular protrusion is arranged at the inner end of the adjusting nut, the annular protrusion is embedded in the third connecting hole and is in running fit with the third connecting hole, and an annular cover plate used for sealing the annular protrusion is further arranged on the end face of the fixing seat. During installation, the annular bulge on the adjusting nut is placed in the third connecting hole, then the annular cover plate is sleeved on the adjusting nut and is fixed on the end face of the fixing seat, and the annular bulge can be limited in the third connecting hole, so that the adjusting nut can rotate.
In the cold heading forming equipment of the spring seat, a tooth slot is formed in the outer side wall of the adjusting nut, and a pawl capable of being embedded in the tooth slot is movably arranged on the annular cover plate. Because the extrusion head receives very big resistance when processing the blank, after the pawl has been designed, can avoid the extrusion head atress back to take place to deflect and influence machining precision.
In the cold heading forming equipment of the spring seat, the annular cover plate is provided with the sliding groove along the radial direction, the sliding groove is internally provided with the damping fin, the inner end of the pawl is slidably arranged in the sliding groove, and the outer end of the pawl can be embedded in the tooth groove. The damping fin is designed in the chute, so that the friction force between the damping fin and the pawl can be increased, the pawl is enabled to be movable, and the pawl can be kept relatively fixed with the chute under the condition of not being subjected to external force, so that the adjusting nut is prevented from deflecting, and further the rod body and the extrusion head are prevented from deflecting.
In the cold heading forming equipment of a spring seat, the mounting seat is arranged on the machine base, the mold cores are arranged on the mounting seat, the mold cores are further provided with concave cavity ejector rods which can be inserted into the concave cavities and eject blanks, the concave cavity ejector rods are all fixed on the cross rod, and the machine base is provided with a second linear driving source connected with the cross rod. And the linear driving source II moves to drive the cross rod to move so as to drive the concave cavity ejector rod to move and eject the processed blank.
In the cold heading forming device of the spring seat, the cross rod is provided with the threaded hole, the inner end of the concave cavity ejector rod is in threaded connection with the threaded hole, and the outer end of the concave cavity ejector rod is inserted into the concave cavity. The concave cavity ejector rod is in threaded connection with the cross rod, so that the extending length of the concave cavity ejector rod can be adjusted, namely the length of the concave cavity ejector rod can be inserted into the concave cavity, and the concave cavity ejector rod is matched with the adjustable extrusion ejector rod.
Compared with the prior art, the invention has the following advantages:
1. when the valve rod is used, the valve spring can be sleeved and abutted against the boss, the shock pad is placed in the first shock absorption hole and the shock absorption Kong Erna, then the valve rod is arranged in the mounting hole, and the shock pad can absorb impact and vibration generated during working, so that vibration and noise are effectively reduced;
2. because the length of the extrusion ejector rod is adjustable, even if certain precision errors exist in parts of cold heading equipment or the size requirements of the spring seat on the length are different, the part can be processed by adjusting the length of the extrusion ejector rod.
Drawings
Fig. 1 is a schematic structural view of the present spring seat in the embodiment.
Fig. 2 is a schematic structural diagram of the present cold heading station in an embodiment.
Fig. 3 is a schematic structural view of the present extrusion ram in the embodiment.
Fig. 4 is a schematic structural diagram of the fixing base in the embodiment.
Fig. 5 is a schematic structural view of the cold heading forming apparatus in the embodiment.
In the figure, 1, a body; 2. a boss; 3. a mounting hole; 4. a damping hole I; 5. damping hole II; 6. a base; 7. a cold heading station; 8. extruding the ejector rod; 9. a first linear driving source; 10. a first driving seat; 11. a fixing seat; 12. a rod body; 13. an extrusion head; 14. a first connecting hole; 15. a second connecting hole; 16. an adjusting nut; 17. a third connecting hole; 18. an annular cover plate; 19. tooth slots; 20. a pawl; 21. a chute; 22. a mold core; 23. a mounting base; 24. concave cavity ejector rod; 25. a cross bar; 26. and a linear driving source II.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, the spring seat comprises a body 1, one end of the body 1 extends outwards along the radial direction of the body 1 to form an annular boss 2, and one end of the valve spring can be abutted against the boss 2; the novel valve is characterized in that a coaxial mounting hole 3, a first damping hole 4 and a second damping hole 5 are sequentially formed in the center of the body 1, the mounting hole 3 can be used for being matched with a valve rod of a valve, the aperture of the first damping hole 4 is smaller than that of the second damping hole 5, and a step surface for placing a damping pad is formed between the first damping hole and the second damping hole.
As shown in fig. 2, 3 and 4, the cold heading forming equipment comprises a machine base 6, 7 cold heading stations 7 are arranged on the machine base 6 at intervals, and the 7 cold heading stations 7 are a shaping station, a flattening station, a step forming station, a punching station I, a punching station II, a punching station III and a shaping station in sequence; each cold heading station 7 comprises a mold core 22 and an extrusion ejector rod 8, a concave cavity matched with the extrusion ejector rod 8 is formed in the mold core 22, and the length of the extrusion ejector rod 8 is adjustable.
Specifically, the cold heading forming device further comprises a first linear driving source 9, a first driving seat 10 is fixed at the output end of the first linear driving source 9, and the inner end of the extrusion ejector rod 8 is arranged on the first driving seat 10. The machine seat 6 is provided with a mounting seat 23, the mold cores 22 are arranged on the mounting seat 23, the mold cores 22 are also provided with concave cavity ejector rods 24 which can be inserted into concave cavities and eject blanks, each concave cavity ejector rod 24 is fixed on a cross rod 25, and the machine seat 6 is provided with a second linear driving source 26 connected with the cross rod 25. The first and second linear driving sources 9 and 26 may be cylinders, and the blank transfer device and the pinch head in the above patent are equally applicable to the present application for transferring the blank to the adjacent cold heading station 7. Preferably, the cross bar 25 is provided with a threaded hole, the inner end of the concave cavity ejector rod 24 is in threaded connection with the threaded hole, and the outer end of the concave cavity ejector rod 24 is inserted into the concave cavity.
In order to achieve adjustment, in this embodiment, the extrusion ejector rod 8 includes a fixing seat 11, a rod body 12 and an extrusion head 13, the fixing seat 11 is fixed on the first driving seat 10, a first connecting hole 14 and a second connecting hole 15 which are communicated are formed in the fixing seat 11, the section of the first connecting hole 14 at the inner end is square, the section of the second connecting hole 15 at the outer end is circular, the section of the inner half part of the rod body 12 is square and is in sliding fit with the first connecting hole 14, the section of the outer half part of the rod body 12 is circular and is in sliding fit with the second connecting hole 15, a driving device capable of driving the rod body 12 to linearly move is arranged on the end face of the fixing seat 11, and the extrusion head 13 is fixed on the outer end face of the rod body 12.
Preferably, the driving device comprises an adjusting nut 16 rotatably arranged at the outer end face of the fixing seat 11, and an external thread in threaded fit with the adjusting nut 16 is arranged on the side wall of the outer half part of the rod body 12. The terminal surface of fixing base 11 has seted up and has aligned and the connecting hole III 17 that is linked together with connecting hole II 15, and the inner of adjusting nut 16 has annular protruding, and annular protruding scarf joint is in connecting hole III 17 and both normal running fit, and the terminal surface of fixing base 11 still is provided with the annular apron 18 that is used for sealed annular bellied.
In order to avoid deflection of the adjusting nut 16 during operation, a tooth slot 19 is formed in the outer side wall of the adjusting nut 16, and a pawl 20 capable of being embedded in the tooth slot 19 is movably arranged on the annular cover plate 18. Specifically, the annular cover plate 18 is provided with a chute 21 along the radial direction, a damping piece is arranged in the chute 21, the inner end of the pawl 20 is slidably arranged in the chute 21, and the outer end of the pawl 20 can be embedded in the tooth slot 19.
The working principle of the invention is as follows: during the use, the cylindrical steel that the accessible 7 cold heading stations cut out gradually becomes above-mentioned spring holder, and wherein punching a hole station one, punching a hole station two, punching a hole station three are used for cutting mounting hole 3, shock attenuation hole one 4 and shock attenuation hole two 5 in proper order to the spring holder that the shaping damping performance is good.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (5)
1. The cold heading forming device of the spring seat comprises a body (1), wherein one end of the body (1) extends outwards along the radial direction of the body (1) to form an annular boss (2), and one end of a valve spring can be abutted against the boss (2); the cold heading forming device is characterized by comprising a machine base (6), 7 cold heading stations (7) are arranged on the machine base (6) at intervals, and the 7 cold heading stations (7) are a correction station, a upsetting station, a step forming station, a punching station I, a punching station II, a punching station III and a shaping station in sequence; each cold heading station (7) comprises a mold core (22) and an extrusion ejector rod (8), a concave cavity matched with the extrusion ejector rod (8) is formed in the mold core (22), and the length of the extrusion ejector rod (8) is adjustable;
the cold heading forming equipment further comprises a first linear driving source (9), a first driving seat (10) is fixed at the output end of the first linear driving source (9), and the inner end of the extrusion ejector rod (8) is arranged on the first driving seat (10);
the extrusion ejector rod (8) comprises a fixed seat (11), a rod body (12) and an extrusion head (13), wherein the fixed seat (11) is fixed on a first driving seat (10), a first connecting hole (14) and a second connecting hole (15) which are communicated with each other are formed in the fixed seat (11), the section of the first connecting hole (14) at the inner end is square, the section of the second connecting hole (15) at the outer end is round, the section of the inner half part of the rod body (12) is square and is in sliding fit with the first connecting hole (14), the section of the outer half part of the rod body (12) is round and is in sliding fit with the second connecting hole (15), a driving device capable of driving the rod body (12) to move linearly is arranged on the end face of the fixed seat (11), and the extrusion head (13) is fixed on the outer end face of the rod body (12).
The driving device comprises an adjusting nut (16) rotatably arranged at the outer end face of the fixed seat (11), and an external thread in threaded fit with the adjusting nut (16) is formed on the side wall of the outer half part of the rod body (12);
the end face of the fixing seat (11) is provided with a third connecting hole (17) which is aligned with and communicated with the second connecting hole (15), the inner end of the adjusting nut (16) is provided with an annular bulge, the annular bulge is embedded in the third connecting hole (17) and is in running fit with the third connecting hole, and the end face of the fixing seat (11) is also provided with an annular cover plate (18) for sealing the annular bulge; the first linear driving source (9) is a cylinder.
2. Cold heading forming equipment for spring seats according to claim 1, characterized in that tooth grooves (19) are formed in the outer side wall of the adjusting nut (16), and pawls (20) capable of being embedded in the tooth grooves (19) are movably arranged on the annular cover plate (18).
3. The cold heading forming device of a spring seat according to claim 2, wherein the annular cover plate (18) is provided with a chute (21) along the radial direction, a damping fin is arranged in the chute (21), the inner end of the pawl (20) is slidably arranged in the chute (21), and the outer end of the pawl (20) can be embedded in the tooth groove (19).
4. A cold heading forming device for a spring seat according to claim 3, wherein the base (6) is provided with a mounting seat (23), the mold cores (22) are all arranged on the mounting seat (23), the mold cores (22) are also provided with cavity ejector rods (24) which can be inserted into the cavities and eject blanks, each cavity ejector rod (24) is fixed on a cross rod (25), and the base (6) is provided with a linear driving source II (26) connected with the cross rod (25).
5. The cold heading forming device of a spring seat according to claim 4, wherein a threaded hole is formed in the cross rod (25), the inner end of the concave cavity ejector rod (24) is in threaded connection with the threaded hole, and the outer end of the concave cavity ejector rod (24) is inserted into the concave cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910829406.3A CN110439647B (en) | 2019-09-03 | 2019-09-03 | Automobile engine spring holder and cold heading former of this spring holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910829406.3A CN110439647B (en) | 2019-09-03 | 2019-09-03 | Automobile engine spring holder and cold heading former of this spring holder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110439647A CN110439647A (en) | 2019-11-12 |
| CN110439647B true CN110439647B (en) | 2024-04-16 |
Family
ID=68438940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910829406.3A Active CN110439647B (en) | 2019-09-03 | 2019-09-03 | Automobile engine spring holder and cold heading former of this spring holder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110439647B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09216033A (en) * | 1996-02-09 | 1997-08-19 | Fuji Oozx Inc | Die for forming valve spring retainer |
| CN101082289A (en) * | 2006-05-31 | 2007-12-05 | 米多Enc有限公司 | Valve spring seat of air-intake air release valve used for vehicle engines |
| CN102357627A (en) * | 2011-10-12 | 2012-02-22 | 章升谊 | Method for machining valve spring retainer by continuous cold heading once near net shape forming |
| CN204867259U (en) * | 2015-06-12 | 2015-12-16 | 南京国际船舶设备配件有限公司 | A closed die forging mould for diesel engine valve seat |
| CN107952921A (en) * | 2017-12-20 | 2018-04-24 | 博峰汽配科技有限公司 | Cotter seat cold-heading molding equipment |
| CN210289865U (en) * | 2019-09-03 | 2020-04-10 | 浙江黎明智造股份有限公司 | Automobile engine spring holder and cold heading former of this spring holder |
-
2019
- 2019-09-03 CN CN201910829406.3A patent/CN110439647B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09216033A (en) * | 1996-02-09 | 1997-08-19 | Fuji Oozx Inc | Die for forming valve spring retainer |
| CN101082289A (en) * | 2006-05-31 | 2007-12-05 | 米多Enc有限公司 | Valve spring seat of air-intake air release valve used for vehicle engines |
| CN102357627A (en) * | 2011-10-12 | 2012-02-22 | 章升谊 | Method for machining valve spring retainer by continuous cold heading once near net shape forming |
| CN204867259U (en) * | 2015-06-12 | 2015-12-16 | 南京国际船舶设备配件有限公司 | A closed die forging mould for diesel engine valve seat |
| CN107952921A (en) * | 2017-12-20 | 2018-04-24 | 博峰汽配科技有限公司 | Cotter seat cold-heading molding equipment |
| CN210289865U (en) * | 2019-09-03 | 2020-04-10 | 浙江黎明智造股份有限公司 | Automobile engine spring holder and cold heading former of this spring holder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110439647A (en) | 2019-11-12 |
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