CN103711537A - Camshaft - Google Patents
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- CN103711537A CN103711537A CN201210376019.7A CN201210376019A CN103711537A CN 103711537 A CN103711537 A CN 103711537A CN 201210376019 A CN201210376019 A CN 201210376019A CN 103711537 A CN103711537 A CN 103711537A
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Abstract
The invention provides a camshaft comprising a hollow mandrel and multiple functional components. The hollow mandrel is provided with a first end and a second end, and the functional components are manufactured separately from the mandrel and assembled on the mandrel. The camshaft simple in structure is in split design, and the hollow mandrel is adopted, so that weight of the whole camshaft can be reduced, and materials are saved; moreover, the mandrel and all the functional components are in the split design, and can be manufactured from different materials separately, and different functional requirements of all the functional components can be met; meanwhile, after being manufactured independently, each functional component can be assembled on the mandrel, dense arrangement of all the functional components on the mandrel can be realized, the structure is compact, and assembly precision and flexibility degree are high; besides, the camshaft after being assembled does not need to be straightened, manufacturing process is simple, and production efficiency is high.
Description
Technical field
The present invention relates to a kind of camshaft, especially a kind of assembled cam shaft, belongs to technical field of internal combustion engines.
Background technique
Camshaft is piston-engined parts, camshaft in existing automobile is an all-in-one-piece camshaft, and it is at a functional part such as cylindrical mandrel surface Machining several cams, high pressure oil pump driving wheel and signal wheel identical with cylinder group length.Wherein, cam, for driving into valve opening and closing; High pressure oil pump driving wheel, for driving high pressure oil pump plunger upward and downward; Signal wheel, for coordinating with CMPS Camshaft Position Sensor.
This all-in-one-piece camshaft normally adopts the materials such as alloy cast iron, spheroidal graphite cast iron, quality carbon steel, cast inblock or forge cam shaft blank, and then cutting produces each functional parts such as cam, high pressure oil pump driving wheel and signal wheel on cam shaft blank.Individual other camshaft also has the direct cutting manufacture of the carbon steel bar of employing (being used for research and development trial-production in early stage).
The problem that this traditional camshaft exists is as follows:
1), traditional camshaft is solid camshaft, weight ratio is larger; 2), in distribution device, the requirement of each functional part on camshaft is not quite similar, wherein, cam requires wear-resisting, resistance to deadlocked, resistance to spot corrosion; Axle journal requires sliding capability good; Mandrel requires rigidity, bending, twisting property good etc.; And traditional camshaft is all to adopt the whole manufacturing of single raw material to form, be difficult to meet the requirement to each functional part; 3), because traditional camshaft adopts cast inblock or Forging Technology, be subject to process limitation, be difficult to produce the gather camshaft of the compact structure arranged of a plurality of cams; 4), adopt traditional cast inblock or forging method to manufacture camshaft to need a large amount of machining operations, expend a large amount of machining man-hour, cutter, fixture and equipment operator and equipment availability area, cost is higher; 5), need alignment after the traditional general heat treatment of camshaft, the precision that wastes time and energy is not easy to guarantee; 6), low, the high material consumption of the manufacturing efficiency of traditional camshaft, automatization level are low.
Summary of the invention
In view of this, the invention provides a kind of camshaft, it is simple in structure, and weight is little, meets the requirement of each functional part, and technique is simple, and manufacturing efficiency is high.
Technological scheme provided by the present invention is:
A camshaft, comprising:
Hollow mandrel, has first end and the second end; And,
Separate with described mandrel a plurality of functional parts of manufacturing, be assemblied on described mandrel.
Camshaft of the present invention adopts split-type design, and simple in structure, it adopts hollow mandrel, can reduce the weight of whole camshaft, saves material; And mandrel and each functional part are split-type design, mandrel and each functional part can adopt different materials to manufacture respectively, meet the different function requirement of each functional part; Meanwhile, each functional part refills and is assigned on mandrel after can independently manufacturing, and can realize the densely covered arrangement of each functional part on mandrel, compact structure, and assembly precision is high, and flexibility degree is high; In addition, without the camshaft alignment to after having assembled, manufacturing process is simple, and manufacturing efficiency is high.
Further, described mandrel adopts accurate steel hollow tubular to make.
Adopt the beneficial effect of above-mentioned further technological scheme to be,
Mandrel adopts accurate steel hollow tubular to make, and its rigidity satisfies the demands, counter-bending, anti-torsion performance is good.
Further, described functional part comprises at least one pair of cam for driving valve opening and closing being set on described mandrel;
Each cam comprises the cam body of the peach-shaped sheet that an employing powdered metallurgical material is made, and the middle part of described cam body has through hole, and described mandrel is threaded onto in the through hole of described cam body.
Adopt the beneficial effect of above-mentioned further technological scheme to be,
Cam on mandrel adopts powdered metallurgical material to make, and has extraordinary wear-resisting and pitting corrosion resistance.
Further, described at least one pair of, on cam, be configured with thrust plate, described thrust plate for described cam body integrally casting end face moulding, that be configured in described cam body on ring segment.
Further, described annular lamina thickness is 1.5 ~ 4mm.
Adopt the beneficial effect of above-mentioned further technological scheme to be,
On at least one pair of cam, with thrust plate, that is, at least one pair of cam and thrust plate casting are structure as a whole, and coordinate the structure press-fiting to compare with thrust plate in prior art and cam split, more firm, are difficult for fragmentation, and assembly precision more easily guarantees.
Further, on described camshaft, be also provided with for playing the locating slot of assembling and positioning effect.
Adopt the beneficial effect of above-mentioned further technological scheme to be,
Locating slot is set on mandrel can be so that before installing camshaft during terminal bolt, and suffered torsion is little, locates more accurate.
Further, described functional part comprises that it is set in the medium position of described mandrel for driving the high pressure oil pump driving wheel of high pressure oil pump plunger upward and downward;
Described high pressure oil pump driving wheel comprises the driving wheel main body that an employing alloy steel material is made, and the middle part of described driving wheel main body has through hole, and described mandrel is threaded onto in the through hole of described driving wheel main body.
Adopt the beneficial effect of above-mentioned further technological scheme to be,
High pressure oil pump driving wheel due to mandrel be split type assembly structure, it can arrange the medium position with mandrel, stressed more even, and bending resistance anti-twisting property is stronger, solved while being arranged on camshaft tail end torsion larger, easily air inlet has been produced and disturbed and the problem of vibration; Meanwhile, and in prior art, high pressure oil pump driving wheel is arranged in to camshaft tail end and compares, can reduce the length of camshaft; In addition, high pressure oil pump driving wheel adopts alloy steel material to make, and has solved cam shaft arrangement that cast iron materials makes its intensity and wear resistance when camshaft medium position and can not meet the problem that high pressure oil pump requires.
Further, described functional part comprises the vacuum pump connecting wheel for being connected with vacuum pump that separates manufacture with described mandrel, is located at the second end end of described mandrel; On described vacuum pump connecting wheel, there is the yi word pattern interface structure that can be connected with vacuum pump.
Adopt the beneficial effect of above-mentioned further technological scheme to be,
Vacuum pump connecting wheel and mandrel adopt split-type structural, have solved mandrel and the skimble-scamble problem of vacuum pump interface; One word interface is set on vacuum pump connecting wheel, can be connected with the vacuum pump of any word interface, very convenient.
Further, described functional part comprises the termination that adopts the phase discriminator for CVTC that powdered metallurgical material is made to be connected, and is installed in the first end end of described mandrel.
Further, described termination comprises:
Termination main body, has the neck that a circle caves inward and forms in its periphery;
Be located at described termination body interior, and along axially extended first oil duct of described mandrel, the oil inlet hole of described the first oil duct is located in the periphery of described termination, and corresponding with cylinder cap position, the oil outlet of described the first oil duct is located at described neck; And,
Be located at described termination inner, and along axially extended the second oil duct of described mandrel, the oil inlet hole of described the second oil duct is located in the periphery of described termination, and corresponding with the oil-hole location of cylinder cap, the oil outlet of described the second oil duct is located at the end face for coordinating with the phase discriminator of CVTC of described termination.
Further, the distance of the oil inlet hole of the oil inlet hole of described the first oil duct and described the second oil duct on the axial direction of described mandrel is 18 ~ 19mm.
Adopt the beneficial effect of above-mentioned further technological scheme to be,
Design termination, camshaft of the present invention end can with CVVT(Continue Variable Valve Timing, CVTC) phase discriminator coordinates, and for CVVT provides oil circuit, realizes being communicated with of CVVT and engine oil path.
Further, described at least one, functional part and described mandrel adopt spline fitted.
Adopt the beneficial effect of above-mentioned further technological scheme to be,
Between functional part and mandrel, adopt above-mentioned spline fitted mode to be connected, connect moment of torsion and can reach 245Nm, very firm.
Further, described functional part comprise signal for coordinating with CMPS Camshaft Position Sensor wheel, be set on described mandrel, and near one end of described mandrel;
Described signal wheel comprises the signal wheel body that an employing sintered powder material is made, and the middle part of described signal wheel body has through hole, and described mandrel is threaded onto in the through hole of described signal wheel body.
Adopt the beneficial effect of above-mentioned further technological scheme to be,
Signal wheel adopts sintered powder material to make, and wear-resisting property is good, meets its performance requirement.
Further, between described signal wheel and described mandrel, be interference fit.
Adopt the beneficial effect of above-mentioned further technological scheme to be,
Because the moment of torsion of signal wheel is little, adopt interference fit with mandrel, structure is simpler, and manufacturing process is also simpler.
Further, on described signal wheel body, be distributed with a plurality of lightening holes of taking turns weight for alleviating described signal.
Adopt the beneficial effect of above-mentioned further technological scheme to be,
On signal wheel body, be distributed with lightening hole, alleviate further the weight of whole camshaft, loss of weight is improved performance and reduced costs and play positive role.
In sum, camshaft of the present invention is by structure optimization, has simple in structurely, and weight reducing, saves material, and each functional part meets performance requirement, compact structure, and assembly precision is high, and flexibility degree is high, and technique is simple, manufacturing efficiency advantages of higher.
Accompanying drawing explanation
Fig. 1 represents the structural representation of a kind of admission cam shaft provided by the present invention;
Fig. 2 represents the structural representation of a kind of exhaust cam shaft provided by the present invention;
Fig. 3 represents the structural representation of cam;
Fig. 4 represents the structural front view with the cam of thrust plate;
The right elevation of Fig. 5 presentation graphs 4;
Fig. 6 represents the plan view of termination;
Fig. 7 represents the cross-sectional configuration schematic diagram of termination;
D-D schematic cross-section in Fig. 8 presentation graphs 7;
B-B schematic cross-section in Fig. 9 presentation graphs 7;
Figure 10 represents the internal spline structure schematic diagram with the cam of thrust plate;
Figure 11 represents A partial structurtes enlarged view in Figure 10;
Figure 12 represents the structural representation of vacuum pump connecting wheel;
Figure 13 represents the structural representation of signal wheel.
Embodiment
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
In prior art, camshaft is all to adopt the materials such as alloy cast iron, spheroidal graphite cast iron, quality carbon steel, cast inblock or forge cam shaft blank, and then cutting produces each functional parts such as cam, high pressure oil pump driving wheel and signal wheel on cam shaft blank.This structure has that weight is large, each functional part can not meet the problem that performance requirement, camshaft structure are not compact, manufacturing efficiency is low, assembly precision is poor.
In order to overcome the above problems, a kind of fabricated camshaft provided by the present invention, it is that mandrel and functional part are adopted to split type trim designs, wherein, mandrel adopts hollow shaft, and functional part separates after manufacture with mandrel, refills and is assigned on mandrel.
Wherein, functional part is for for driving valve opening and the cam of closing, for driving the high pressure oil pump driving wheel of high pressure oil pump plunger upward and downward, at least one of the parts such as signal wheel that coordinate with CMPS Camshaft Position Sensor.
Camshaft of the present invention, owing to adopting hollow mandrel, can reduce the weight of whole camshaft, saves material; And mandrel and functional part are split-type design, mandrel and functional part can adopt different materials to manufacture respectively, meet mandrel and the different function requirement of each functional part; Meanwhile, each functional part refills and is assigned on mandrel after can independently manufacturing, and can realize the densely covered arrangement of each functional part on mandrel, compact structure, and assembly precision is high, and flexibility degree is high; In addition, without the camshaft alignment to after having assembled, manufacturing process is simple, and manufacturing efficiency is high.
Shown in Fig. 1, be the structural representation of a kind of admission cam shaft provided by the present invention.Take this admission cam shaft below as embodiment, the present invention is better described.
Particularly, as shown in Figure 1, a kind of admission cam shaft that the present embodiment provides, it comprises a hollow mandrel 100 and is assemblied in a plurality of functional parts on this mandrel 100, wherein, a plurality of functional parts in this admission cam shaft comprise: the termination 200 that is assemblied in these mandrel 100 first end ends; Be assemblied in four pairs of cams on this mandrel 100; Be assemblied in the high pressure oil pump driving wheel 300 on this mandrel 100; And, be assemblied in signal on this mandrel 100 wheel 400 etc.
Wherein, in order to make mandrel 100 meet the requirement of its rigidity, counter-bending, anti-torsion aspect of performance, the admission cam shaft providing in the present embodiment, preferably, mandrel 100 adopts accurate steel hollow tubular, by optimizing and precision molding technology, make camshaft overall weight can reduce by 20 ~ 40%, saving material can reach more than 30%.
Four pairs of cams on the admission cam shaft providing in the present embodiment, from these mandrel 100 first end to the second ends, arrange, be followed successively by the pair of cams 501 corresponding with motor one cylinder position, with second pair of cam 502 corresponding to motor two cylinder positions, with the 3rd pair of cam 503 corresponding to motor three cylinder positions and the four pair cam 504 corresponding with motor four cylinder positions.
Shown in Fig. 3, be the structural representation of cam.As shown in Figure 3, each cam in four pairs of cams includes the cam body 500 of the peach-shaped sheet that an employing powdered metallurgical material makes, and the middle part of this cam body 500 has through hole 500a, and mandrel 100 is threaded onto in the through hole 500a of cam body 500.
In addition, in four pairs of cams on the admission cam shaft providing, have at least in pair of cams and can be configured with thrust plate in the present embodiment, that is, having pair of cams at least is the cam with thrust plate.
Shown in Fig. 4, be the structural representation with the cam of thrust plate.As shown in Figure 4, thrust plate 500b is annular lamina, its can be together with cam body 500 casting, and be configured on the end face of cam body 500, coordinate the structure press-fiting to compare with thrust plate in prior art and cam split, more firm, be difficult for fragmentation, assembly precision more easily guarantees.
In the present embodiment, preferred, the thickness A of thrust plate 500b (being that thrust plate 500b is along the thickness on mandrel 100 axial directions) is 1.5 ~ 4mm.
In addition,, in four pairs of cams on the admission cam shaft providing in the present embodiment, the pair of cams 501 near mandrel 100 first ends can be designed to the cam with thrust plate.Certainly, in actual applications, second pair of cam 502, the 3rd pair of cam 503 or the 4th pair of cam 504 also can adopt the cam with thrust plate.
In addition, it should be noted that, in the admission cam shaft that the present embodiment provides, on mandrel 100, also to there is the axle journal 600 of support, support axle journal 600 and be located between two cams of every pair of cam and the two ends of mandrel 100.
In the present embodiment, support axle journal 600 and can be and mandrel 100 moulding that is structure as a whole, cost-saving.Certainly, supporting axle journal 600 can be also to refill and be assigned on mandrel 100 after adopting other materials to manufacture separately.
In addition, as shown in Figure 1, a kind of admission cam shaft providing in the present embodiment can also be provided for the locating slot 700 of assembling and positioning effect on mandrel 100.Locating slot 700 is preferably arranged between motor one cylinder and motor two cylinder, that is, between pair of cams 501 and second pair of cam 502, before camshaft is installed, during terminal bolt, make the suffered torsion of camshaft little, locates more accurate.
Certainly can understand, this locating slot 700 also can be arranged at other positions, at this, is only a kind of preferred version, but locating slot 700 positions is not limited to.
In addition, as shown in Figure 1, in a kind of admission cam shaft of providing in the present embodiment, high pressure oil pump driving wheel 300 is set in the medium position of mandrel 100.This high pressure oil pump driving wheel 300 comprises the driving wheel main body that an employing alloy steel material is made, and the middle part of driving wheel main body has through hole, and mandrel 100 is threaded onto in the through hole of driving wheel main body.
Because high pressure oil pump driving wheel 300 is split type assembly structure with mandrel 100, it can arrange the medium position with mandrel 100, stressed more even, and bending resistance anti-twisting property is stronger, solved while being arranged on camshaft tail end torsion larger, easily air inlet has been produced and disturbed and the problem of vibration; Meanwhile, and in prior art, high pressure oil pump driving wheel 300 is arranged in to camshaft tail end and compares, can reduce the length of camshaft; In addition, high pressure oil pump driving wheel 300 adopts alloy steel materials to make, and has solved cam shaft arrangement that cast iron materials makes its intensity and wear resistance when camshaft medium position and can not meet the problem that high pressure oil pump requires.
In the present embodiment, preferred, high pressure oil pump driving wheel 300 is located between motor two cylinder and motor three cylinders, that is, and and between second pair of cam 502 and the 3rd pair of cam 503.Certainly can understand, this high pressure oil pump driving wheel 300 can also be arranged at other positions of mandrel 100 according to the actual requirements.
In addition, in a kind of admission cam shaft that the present embodiment provides, preferred powdered metallurgical material manufacture, the axle journal end that the diameter that is arranged in the first end of mandrel 100 is 30mm of adopting in termination 200.
Preferably, this termination 200 can be designed as with CVVT phase discriminator and coordinates, and for CVVT phase discriminator provides oil supply structure, realizes being communicated with of CVVT and engine oil path.
As shown in Figure 7 to 9, in the present embodiment, this termination 200 comprises:
One end head main body 201, its one end coordinates with mandrel 100, is installed on mandrel 100, and the other end and CVVT phase discriminator are connected, and have the neck 201a that a circle caves inward and forms in its periphery;
Be located at termination main body 201 inside, and be located in the periphery of termination 200 along the oil inlet hole 202a of axially extended first oil duct 202, the first oil ducts 202 of mandrel 100, and corresponding with cylinder cap position, and the oil outlet 202b of the first oil duct 202 is located at neck 201a; And,
Be located at 200 inside, termination, and along axially extended the second oil duct 203 of mandrel 100, the oil inlet hole 203a of the second oil duct 203 is located in the periphery of termination 200, and corresponding with the oil-hole location of cylinder cap, the oil outlet 203b of the second oil duct 203 is located at the end face for coordinating with CVVT phase discriminator of termination 200.
As shown in Figure 8 and Figure 9, fluid enters into the oil inlet hole 202a of the first oil duct 202 by cylinder cap, oil outlet 202b by the first oil duct 202 enters in the first oil pocket of CVVT phase discriminator again, simultaneously, fluid also enters the oil inlet hole 203a of the second oil duct 203 by cylinder cap, oil outlet 203b by the second oil duct 203 enters in the second oil pocket of CVVT phase discriminator again, thereby is CVVT fuel feeding, realizes the UNICOM of CVVT phase discriminator and motor.
In the present embodiment, as shown in Fig. 6 to 9, preferred, the first oil duct 202 has two, and the second oil duct 203 has two; And the distance of the oil inlet hole 203a of the oil inlet hole 202a of the first oil duct 202 and the second oil duct 203 on the axial direction of mandrel 100 is 18 ~ 19mm.In the present embodiment, the design of termination 200, compact structure, rubs little, and processing is simple, meanwhile, meets the job requirement of CVVT phase discriminator.
As shown in Figure 1, in a kind of admission cam shaft that the present embodiment provides, signal wheel 400 is set on mandrel 100, and arranges near the second end end of mandrel 100.
As shown in figure 13, preferred, this signal wheel 400 comprises the signal wheel body 401 that an employing sintered powder material is made, and the middle part of signal wheel body 401 has through hole, and mandrel 100 is threaded onto in the through hole of signal wheel body 401.
In addition, this signal wheel body 401 can adopt hollow out design,, on signal wheel body 401, can be distributed with a plurality of lightening holes 402 of taking turns 400 weight for alleviating signal, to alleviate further the weight of whole camshaft, comparable normal signal wheel 400 weight that alleviate more than 30%, improve performance and reduce costs loss of weight and play positive role.
It should be noted that, in the admission cam shaft providing at the present embodiment, between each functional part and mandrel 100, can adopt spline fitted to be connected, or, adopt interference fit to connect.
Preferably, in the admission cam shaft providing in the present embodiment, four pairs of cams, termination 200, high pressure oil pump driving wheels 300 all adopt spline fitted to be connected on mandrel 100, signal wheel 400 is because its moment of torsion is little, adopt interference fit with mandrel 100, structure is simpler, and manufacturing process is also simpler.
Shown in Figure 10 and Figure 11, be that the cam of take with thrust plate is example, the spline fitted structure between each functional part and mandrel 100 is described.
As shown in FIG. 10 and 11, on the through-hole wall at cam body 500 centers, be provided with internal spline structure; On mandrel 100, for assembling the position of this cam body 500, along it, be circumferentially distributed with external splines structure.
Wherein, the through-hole wall of cam body 500 has been uniformly distributed circumferentially 24 external splines 500b, and between adjacent external splines 500b, spacing is 1.7mm, and the height of external splines 500b is 0.14mm left and right, external splines machining when assembling.
Adopt above-mentioned spline fitted structure, processing is simple, and is connected firmly, and press-fits conveniently.
Figure 2 shows that the structural representation of a kind of exhaust cam shaft provided by the present invention.Take this exhaust cam shaft below as embodiment, the present invention is better described.
The exhaust cam shaft providing in the present embodiment, can coordinate with above-mentioned admission cam shaft provided by the present invention and form camshaft assembly, is applied in the distribution device of automobile.
A kind of exhaust cam shaft that the present embodiment provides, comprises a hollow mandrel 100 and is assemblied in each functional part on this mandrel 100.Wherein, each functional part comprises: be assemblied in four pairs of cams on mandrel 100; Be assemblied in the termination 200 of the first end end of mandrel 100; Be assemblied in the vacuum pump connecting wheel 800 of the second end end of mandrel 100; And, be assemblied in the high pressure oil pump driving wheel 300 on mandrel 100.
The exhaust cam shaft that the present embodiment provides, coordinates with admission cam shaft provided by the present invention, and its mandrel 100 structures all can be identical with mandrel 100 structures of admission cam shaft; Four pairs of cams on its mandrel 100 are corresponding with four pairs of cam positions on admission cam shaft, and structure is identical; Its high pressure oil pump driving wheel 300 is identical with high pressure oil pump driving wheel 300 structures on admission cam shaft, and position is corresponding; Its termination 200 can be identical with termination 200 structures on admission cam shaft, and position is corresponding.Certainly, according to the actual requirements, on exhaust cam shaft, each functional part also can carry out accommodation, at this, differs one for example.
The exhaust cam shaft that the present embodiment provides, different from the above-mentioned admission cam shaft providing is, the second end end at mandrel 100 is equipped with vacuum pump connecting wheel 800, this vacuum pump connecting wheel 800 adopts split-type structural with mandrel 100, comprise the connection axle journal 801 for being connected with vacuum pump connecting wheel 800, on these connection axle journal 801 end faces, there is a word interface 800a, can be by selecting the connection axle journal 801 of different-diameter, to be connected with various vacuum pump couplings, mandrel 100 and the skimble-scamble problem of vacuum pump interface have been solved; And a word interface 800a who arranges on vacuum pump connecting wheel 800, can be connected with the vacuum pump of any word interface, very convenient.
It should be pointed out that in other embodiments of the invention, on admission cam shaft, also can design vacuum pump connecting wheel 800.
Below be only to provide the embodiment of a kind of admission cam shaft and a kind of exhaust cam shaft, should be understood that, in actual application, the structure of admission cam shaft, exhaust cam shaft is not limited to this.It should be pointed out that for those skilled in the art, not departing under the prerequisite of principle of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (14)
1. a camshaft, is characterized in that, comprising:
Hollow mandrel, has first end and the second end; And,
Separate with described mandrel a plurality of functional parts of manufacturing, be assemblied on described mandrel.
2. camshaft according to claim 1, is characterized in that, described mandrel adopts accurate steel hollow tubular to make.
3. camshaft according to claim 1, is characterized in that, described functional part comprises at least one pair of cam for driving valve opening and closing being set on described mandrel;
Each cam comprises the cam body of the peach-shaped sheet that an employing powdered metallurgical material is made, and the middle part of described cam body has through hole, and described mandrel is threaded onto in the through hole of described cam body.
4. camshaft according to claim 3, is characterized in that, described at least one pair of, on cam, is configured with thrust plate, described thrust plate for described cam body integrally casting end face moulding, that be configured in described cam body on ring segment.
5. camshaft according to claim 4, is characterized in that, the thickness of described thrust plate is 1.5 ~ 4mm.
6. camshaft according to claim 1, is characterized in that, is also configured with for playing the locating slot of assembling and positioning effect on described mandrel.
7. camshaft according to claim 1, is characterized in that, described functional part comprises that it is set in the medium position of described mandrel for driving the high pressure oil pump driving wheel of high pressure oil pump plunger upward and downward;
Described high pressure oil pump driving wheel comprises the driving wheel main body that an employing alloy steel material is made, and the middle part of described driving wheel main body has through hole, and described mandrel is threaded onto in the through hole of described driving wheel main body.
8. camshaft according to claim 1, is characterized in that, described functional part comprises the vacuum pump connecting wheel for being connected with vacuum pump that separates manufacture with described mandrel, is located at the second end end of described mandrel; On described vacuum pump connecting wheel, there is the yi word pattern interface structure that can be connected with vacuum pump.
9. camshaft according to claim 1, is characterized in that, described functional part comprises the termination that adopts the phase discriminator for CVTC that powdered metallurgical material is made to be connected, and is installed in the first end end of described mandrel.
10. camshaft according to claim 9, is characterized in that, described termination comprises:
Termination main body, has the neck that a circle caves inward and forms in its periphery;
Be located at described termination body interior, and along axially extended first oil duct of described mandrel, the oil inlet hole of described the first oil duct is located in the periphery of described termination, and corresponding with cylinder cap position, the oil outlet of described the first oil duct is located at described neck; And,
Be located at described termination inner, and along axially extended the second oil duct of described mandrel, the oil inlet hole of described the second oil duct is located in the periphery of described termination, and corresponding with the oil-hole location of cylinder cap, the oil outlet of described the second oil duct is located at the end face for coordinating with the phase discriminator of CVTC of described termination main body.
11. camshafts according to claim 10, is characterized in that, the distance of the oil inlet hole of the oil inlet hole of described the first oil duct and described the second oil duct on the axial direction of described mandrel is 18 ~ 19mm.
12. according to the camshaft described in claim 1 to 11 any one, it is characterized in that, described at least one, between functional part and described mandrel, adopts spline fitted.
13. camshafts according to claim 1, is characterized in that, described functional part comprises the signal wheel for coordinating with CMPS Camshaft Position Sensor, be set on described mandrel, and one end of close described mandrel;
Described signal wheel comprises the signal wheel body that an employing sintered powder material is made, and the middle part of described signal wheel body has through hole, and described mandrel is threaded onto in the through hole of described signal wheel body.
14. camshafts according to claim 13, is characterized in that, are distributed with at least one for alleviating the lightening hole of described signal wheel weight on described signal wheel body.
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| CN201210376019.7A CN103711537A (en) | 2012-09-29 | 2012-09-29 | Camshaft |
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| CN201210376019.7A CN103711537A (en) | 2012-09-29 | 2012-09-29 | Camshaft |
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| CN107605560A (en) * | 2017-11-02 | 2018-01-19 | 盛瑞传动股份有限公司 | A kind of camshaft |
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| CN111492123A (en) * | 2017-12-13 | 2020-08-04 | 舍弗勒技术股份两合公司 | Camshaft phaser and method of assembling same |
| CN112355310A (en) * | 2020-11-12 | 2021-02-12 | 三阳纺织有限公司 | Method for manufacturing cam part and application in textile machinery |
| CN115700264A (en) * | 2022-12-01 | 2023-02-07 | 丹阳市磊晶机械制造有限公司 | High-strength wear-resistant camshaft |
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| DE4430906A1 (en) * | 1994-08-31 | 1996-03-07 | Peter Dr Reipert | Built=up camshaft e.g. for IC engine |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104405463A (en) * | 2014-12-08 | 2015-03-11 | 重庆市银钢一通科技有限公司 | Cam shaft |
| CN105312860A (en) * | 2015-12-06 | 2016-02-10 | 十堰宏兆汽配实业有限公司 | Processing method for combined type cam shaft |
| CN106121757A (en) * | 2016-08-17 | 2016-11-16 | 力帆实业(集团)股份有限公司 | Admission cam shaft of car engine |
| CN107605560A (en) * | 2017-11-02 | 2018-01-19 | 盛瑞传动股份有限公司 | A kind of camshaft |
| CN111492123A (en) * | 2017-12-13 | 2020-08-04 | 舍弗勒技术股份两合公司 | Camshaft phaser and method of assembling same |
| CN111492123B (en) * | 2017-12-13 | 2022-04-29 | 舍弗勒技术股份两合公司 | Camshaft phaser and method of assembling same |
| CN109914956A (en) * | 2019-04-08 | 2019-06-21 | 台州市计量设备技术校准中心 | A kind of limit shaft and preparation method thereof on floor spring |
| CN112355310A (en) * | 2020-11-12 | 2021-02-12 | 三阳纺织有限公司 | Method for manufacturing cam part and application in textile machinery |
| CN112355310B (en) * | 2020-11-12 | 2021-09-28 | 三阳纺织有限公司 | Method for manufacturing cam part and application in textile machinery |
| CN115700264A (en) * | 2022-12-01 | 2023-02-07 | 丹阳市磊晶机械制造有限公司 | High-strength wear-resistant camshaft |
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Application publication date: 20140409 |