CN102392707B - Cam plate of engine - Google Patents
Cam plate of engine Download PDFInfo
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- CN102392707B CN102392707B CN201110305096.9A CN201110305096A CN102392707B CN 102392707 B CN102392707 B CN 102392707B CN 201110305096 A CN201110305096 A CN 201110305096A CN 102392707 B CN102392707 B CN 102392707B
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- cam
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- bulge loop
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Abstract
The invention provides a cam plate of an engine. The cam plate comprises a plate body (1), wherein a shaft mounting hole (2) is arranged on the central position of the plate body (1); the periphery of the plate body (1) is provided with at least one front cam wheel (4) and at least one rear cam wheel (5) along the radial direction at intervals; and the front cam wheel (4) and the rear cam wheel (5) are crisscrossed arranged along the axial direction of the plate body (1). The cam plate of the engine provided by the invention is of a cam plate structure, i.e., the front and rear rows of cam wheels of the cam plate are closely arranged without arranging cam shafts, thus the axial size of the engine can be largely shortened, and the engine size cannot be obviously changed when the number of cylinders is increased; as the cam plate can be processed and molded as a whole, so the processing difficulty can be greatly reduced and the process is relatively simple.
Description
Technical field
The present invention relates to engine art, especially, relate to a kind of engine cam disk.
Background technique
At present, what the distribution device of most of reciprocating engine was equipped with is all camshaft, has underneath camshaft, up-set type camshaft.What existing level opposed type piston aeroengine adopted is overhead cam structure, and camshaft is forged and formed by chromium nickel steel, is one-piece camshaft.Camshaft front end has a drive speed adjustor gear, and there are 9 cams centre, wherein 6 exhaust cams and 3 intake cams, and there is a driving cam shaftgear rear end.In 4 bearing hole of crankshaft installed on left and right casing; Camshaft is by bent axle by crankshaft gear and left intermediate gear drives, and its sense of rotation is contrary with bent axle.Port timing does not need to adjust, and when engine assembly, camshaft, left intermediate gear and crankshaft gear, assemble the specified value that can meet gas distribution phase of engine by increment face punching point special marker respectively.Existing camshaft structure, camshaft and bent axle apart from each other, generally need to drive with accurate high-speed drive chain, will adopt suitable chain guide device and tension device, complicated mechanism simultaneously.Because two cylinders are common, use a cam, cylinder number is more, and the axial dimension of camshaft is larger.
Summary of the invention
The object of the invention is to provide a kind of cam disk of motor, to solve the technical problem that available engine axial dimension is excessive, camshaft difficulty of processing is large.
For achieving the above object, the invention provides a kind of engine cam disk, comprise disk body, the center of disk body is provided with axle mounting hole; Circumferential compartment of terrain along disk body on the periphery of disk body is provided with at least one front cam and cam after at least one; Front cam and rear cam are axially staggered front to back setting along disk body.
Further, on disk body along cam disk be axially provided with bulge loop, the radially extension along bulge loop from the periphery of bulge loop of rear cam forms.
Further, the middle part of disk body axially convexes with chimb along disk body, and chimb threaded shaft mounting hole arranges.
Further, on the inner ring surface of bulge loop, be provided with the internal tooth with the little gear ring engagement of minute gas Double-gear of motor; On the wheel face of internal tooth, front cam and the wheel face of rear cam, be provided with carburized case.
Further, the periphery of disk body is circumferentially provided with four front cam equally spacedly along disk body, on the outer ring surface of bulge loop along bulge loop be radially provided with equally spacedly four after cam, front cam and rear cam mutually stagger and arrange.
Further, the wheel profile of front cam and rear cam is envelope profile.
Further, be provided with at least one lightening hole and at least one peep hole on disk body, lightening hole and peep hole are all arranged between axle mounting hole and the periphery of disk body.
Further, be upwards provided with four, six, eight or 12 lightening holes the week of disk body, these four, six, eight or 12 lightening holes are along the circumferential spaced set of disk body.
Further, in axle mounting hole, be provided with bronze bushing.
Further, the cam disk of motor is alloy steel forging.
The present invention has following beneficial effect:
1, the present invention adopts cam disk structure, and forward and backward two row's cams of this cam disk, near arranging, without camshaft is set, have shortened the axial dimension of motor so greatly, and when cylinder number increases, size of engine does not have significant change.
2, cam disk of the present invention can whole machine shaping, and difficulty of processing is reduced greatly, and technique is relatively simple.
3, cam disk of the present invention can overcome camshaft long and cause the straightness accuracy of camshaft and the cylindricity conformity difficulty of cam large.
4, cam disk of the present invention, due to two dish each four or a plurality of cams before and after being processed with, makes to share a cam disk by a plurality of cylinders, has greatly reduced the number of spare parts of motor, and structure is simpler.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the engine cam disk plan view schematic diagram of the preferred embodiment of the present invention; And
Fig. 2 be in Fig. 1 of the present invention A-A to schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Referring to Fig. 1 and Fig. 2, a kind of cam disk of motor, comprise circular disk body 1, in the center of disk body 1, be provided with axle mounting hole 2, the middle part of disk body 1 is axially extended with annular chimb 21 around axle mounting hole 2 along disk body 1, make cam disk be assembled rear steadiness better, particularly can prevent twisting.Preferably, this engine cam disk is alloy steel forging, has guaranteed widely hardness and the intensity of cam disk.Preferably, be provided with bronze bushing 8 in axle mounting hole 2, this bronze bushing 8 and the 2 interference assemblings of axle mounting hole, make bronze bushing 8 and axle mounting hole 2 synchronous rotary all the time.Bronze bushing 8 is set and has greatly strengthened the wear-resisting property of axle mounting hole 2, thereby extended the working life of cam disk.
The periphery of disk body 1 is axially provided with bulge loop 3 along disk body 1, and this bulge loop 3 and annular nib 21 are positioned at the same side of the card of disk body 1.The length of the axial direction along disk body 1 of this bulge loop 3 is identical with the length of the axial direction along disk body 1 of annular nib 21, or the length of the axial direction along disk body 1 of bulge loop 3 be less than annular nib 21 the length of the axial direction along disk body 1.On the inner ring surface of bulge loop 3, be provided with internal tooth 31, after assembling, this internal tooth 31 meshes with the little gear ring of minute gas Double-gear of motor.Preferably, on this internal tooth 31, be provided with carburized case, make that internal tooth 31 is more wear-resisting and transmission performance is more excellent.
The periphery of disk body 1 along disk body 1 be radially provided with at least one front cam 4 and cam 5 after at least one, the axial front and back along disk body 1 arrange at disk body 1 periphery for this front cam 4 and rear cam 5.Like this, front cam 4 and rear cam 5 are equivalent to the cam at the two ends of camshaft, and arranging of cam disk omitted camshaft, thereby have shortened the distance between cam.Preferably, front cam 4 is by the edge of disk body 1 along the extending radially out of disk body 1, and rear cam 5 is by the outer ring surface of bulge loop 3 along the extending radially out of bulge loop 3, and front cam 4 and rear cam 5 leave gap in the axial direction.Like this, the member that makes to contact with front cam 4 and rear cam 5 respectively can not collide in the course of the work mutually.Preferably, in other embodiments, cam disk can be close to arrange by two disk bodies 1 and form, and the cam of each disk body 1 is interlaced, to form front cam 4 and the rear cam 5 of interlaced arrangement.Preferably, the periphery of disk body 1 is radially provided with four front cam 4 equally spacedly along disk body 1, on the outer ring surface of bulge loop 3 along bulge loop 3 be radially provided with equally spacedly four after cam 5, after these four front cam 4 and four, cam 5 mutually staggers and arranges.The envelope profile of the tappet pulley external diameter movement locus that more preferably, the wheel profile of front cam 4 and rear cam 5 is motor.Like this, other member is always saturated with front cam 4 wheel faces with rear cam 5 wheel faces in the course of the work and contacts.Preferably, on the wheel face of the wheel face of front cam 4 and rear cam 5, be provided with carburized case, make the wheel face of front cam 4 and the wheel face of rear cam 5 more wear-resisting, and degree of finish be higher.
In the week of disk body 1, be upwards provided with at least one lightening hole 6, lightening hole 6 is arranged on the radially middle of axle mounting hole 2 and bulge loop 3, has greatly alleviated the deadweight of cam disk, thereby has alleviated the deadweight of motor.Preferably, on disk body 1 along disk body 1 be circumferentially provided with four, six, eight or 12 lightening holes 6, these four, six, eight or 12 lightening holes 6 are along circumferential spaced sets.The quantity of lightening hole 6 is suitably set according to the requirement of strength of cam disk, makes the intensity of cam disk and deadweight reach Optimum Matching; And spaced set makes the center of cam disk be positioned at all the time the geometrical center of this cam disk, the torsional moment loss while having avoided like this cam disk rotation.On disk body 1, be provided with at least one peep hole 7, peep hole 7 is arranged on the radially middle of axle mounting hole 2 and bulge loop 3.Peep hole 7 is set and can checks that whether the mounting point of cam disk and driving gear is correct.
When crankshaft rotating, cam disk becomes counterrotating by the drive of driving mechanism with bent axle, due to the effect of cam type surface, promotes tappet, push rod and rocking arm, and active force is passed on valve stem, and compression valve spring, opens intake valve or exhaust valve; When cam disk turns over certain angle, tappet pulley is not subject to the ejection of cam type surface to do the used time, and inlet and outlet door is just subject to elastic force effect and closes.The size of cam type surface is determining perdurabgility and the travel values that valve is opened, and the distribution distance between cam is determining the perdurabgility of valve-closing.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. a cam disk for motor, is characterized in that, comprising:
Disk body (1), the center of described disk body (1) is provided with axle mounting hole (2);
Circumferential compartment of terrain along described disk body (1) on the periphery of described disk body (1) is provided with at least one front cam (4) and cam (5) after at least one;
Described front cam (4) and described rear cam (5) are axially staggered front to back setting along described disk body (1);
Described disk body (1) upper along described cam disk be axially provided with bulge loop (3), described rear cam (5) forms along the radially extension of described bulge loop (3) from the periphery of described bulge loop (3);
The middle part of described disk body (1) axially convexes with chimb (21) along described disk body (1), and described chimb (21) arranges around described axle mounting hole (2);
On the inner ring surface of described bulge loop (3), be provided with the internal tooth (31) with the little gear ring engagement of minute gas Double-gear of described motor;
On the wheel face of the wheel face of described internal tooth (31), described front cam (4) and described rear cam (5), be provided with carburized case.
2. the cam disk of motor according to claim 1, is characterized in that,
The periphery of described disk body (1) is circumferentially provided with four described front cam (4) equally spacedly along described disk body (1), on the outer ring surface of described bulge loop (3) along described bulge loop (3) be radially provided with equally spacedly four described rear cams (5), described front cam (4) and described rear cam (5) mutually stagger and arrange.
3. the cam disk of motor according to claim 2, is characterized in that,
The wheel profile of described front cam (4) and described rear cam (5) is envelope profile.
4. the cam disk of motor according to claim 1, is characterized in that,
On described disk body (1), be provided with at least one lightening hole (6) and at least one peep hole (7), described lightening hole (6) and described peep hole (7) are all arranged between described axle mounting hole (2) and the periphery of described disk body (1).
5. the cam disk of motor according to claim 4, is characterized in that,
Upwards be provided with four, six, eight or 12 described lightening holes (6) week of described disk body (1), these four, six, eight or 12 described lightening holes (6) are along the circumferential spaced set of described disk body (1).
6. according to the cam disk of the motor described in any one in claim 1 to 5, it is characterized in that,
In described axle mounting hole (2), be provided with bronze bushing (8).
7. according to the cam disk of the motor described in any one in claim 1 to 5, it is characterized in that,
The cam disk of described motor is alloy steel forging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110305096.9A CN102392707B (en) | 2011-10-10 | 2011-10-10 | Cam plate of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110305096.9A CN102392707B (en) | 2011-10-10 | 2011-10-10 | Cam plate of engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102392707A CN102392707A (en) | 2012-03-28 |
| CN102392707B true CN102392707B (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110305096.9A Active CN102392707B (en) | 2011-10-10 | 2011-10-10 | Cam plate of engine |
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| Country | Link |
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| CN (1) | CN102392707B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815179B (en) * | 2012-09-04 | 2016-01-20 | 航天重型工程装备有限公司 | A kind of single trailing arm type independent suspension with hydro-pneumatic spring |
| CN103321682B (en) * | 2013-06-13 | 2015-08-12 | 唐人忠 | The explosive motor that air cylinder annular is arranged |
| CN111075754A (en) * | 2020-01-08 | 2020-04-28 | 蓝箭航天空间科技股份有限公司 | Turbine blade disc and liquid rocket engine |
| CN115488268B (en) * | 2022-09-22 | 2024-03-08 | 东莞市杜氏诚发精密弹簧有限公司 | Spring machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87205851U (en) * | 1987-03-27 | 1988-02-24 | 方祖彭 | Plunger metering pump and plunger diaphragm metering pump series |
| US5281104A (en) * | 1991-08-22 | 1994-01-25 | Mercedes-Benz Ag | Sequential displacement piston pump |
| CN2837518Y (en) * | 2005-10-31 | 2006-11-15 | 江门天钇金属工业有限公司 | Motorcycle engine cam valve train |
| DE102006018588A1 (en) * | 2006-04-21 | 2007-10-25 | Schaeffler Kg | Charge-cycle valve operating device for stroke piston internal combustion engine, has cam stroke transferring device designed as clamping device between plungers and valve and implemented in hydraulic, electric and mechanical manner |
| CN202300557U (en) * | 2011-10-10 | 2012-07-04 | 中国南方航空工业(集团)有限公司 | Engine cam disk |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01195978A (en) * | 1988-01-29 | 1989-08-07 | Ibiden Co Ltd | Multiple cam type rotary pump |
| JPH1195978A (en) * | 1997-09-19 | 1999-04-09 | Toshiba Corp | Sentence input device |
-
2011
- 2011-10-10 CN CN201110305096.9A patent/CN102392707B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87205851U (en) * | 1987-03-27 | 1988-02-24 | 方祖彭 | Plunger metering pump and plunger diaphragm metering pump series |
| US5281104A (en) * | 1991-08-22 | 1994-01-25 | Mercedes-Benz Ag | Sequential displacement piston pump |
| CN2837518Y (en) * | 2005-10-31 | 2006-11-15 | 江门天钇金属工业有限公司 | Motorcycle engine cam valve train |
| DE102006018588A1 (en) * | 2006-04-21 | 2007-10-25 | Schaeffler Kg | Charge-cycle valve operating device for stroke piston internal combustion engine, has cam stroke transferring device designed as clamping device between plungers and valve and implemented in hydraulic, electric and mechanical manner |
| CN202300557U (en) * | 2011-10-10 | 2012-07-04 | 中国南方航空工业(集团)有限公司 | Engine cam disk |
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| CN102392707A (en) | 2012-03-28 |
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Address after: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee after: China Hangfa South Industrial Co. Ltd. Address before: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee before: China Southern Airlines Industry (Group) Co., Ltd. |