CN103967952A - Cam shaft and timing gear connection structure - Google Patents
Cam shaft and timing gear connection structure Download PDFInfo
- Publication number
- CN103967952A CN103967952A CN201410217339.7A CN201410217339A CN103967952A CN 103967952 A CN103967952 A CN 103967952A CN 201410217339 A CN201410217339 A CN 201410217339A CN 103967952 A CN103967952 A CN 103967952A
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- China
- Prior art keywords
- camshaft
- timing gear
- spindle nose
- hollow type
- cam shaft
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Abstract
The invention relates to a cam shaft and timing gear connection structure which comprises a cam shaft and a timing gear. The cam shaft and timing gear connection structure is characterized by further comprising a shaft head, wherein the cam shaft is hollow, the hollow cam shaft is connected with the timing gear through the shaft head, and the timing gear can be detached and replaced separately. The cam shaft and timing gear connection structure is simple in structure; the hollow cam shaft is connected with the timing gear through the shaft head, so that torsional strength is reliable; the cam shaft and timing gear connection structure has remarkable advantages with respect to light weight, energy conversation, cost reduction, material optimization and matching and the like; meanwhile, it can be guaranteed that the connecting mode of the timing gear and the cam shaft is consistent with an existing integrated cam shaft.
Description
Technical field
The present invention relates to a kind of camshaft and timing gear linkage structure, belong to diesel engine part device technique field.
Background technique
Camshaft timing gear is the important accessory on diesel engine, current, and the camshaft on camshaft timing gear is mainly by solid camshaft and two kinds of structural types of hollow camshaft.
For adopting solid camshaft, the problem of existence is: (1), because the quality of solid camshaft is more much bigger than hollow type camshaft, cost of material is higher, does not meet complete machine lightweight and reduces costs demand; (2) due to camshaft be the rotary component of a kind of continuous acceleration and deceleration, its acceleration and deceleration are all accompanied by the consumption of energy, and camshaft quality is larger, and energy consumption is more; (3) solid camshaft is integral structure, can only adopt homogenous material, and can not carry out according to demand the Optimized Matching of material;
(2) for adopting hollow type camshaft, existing is that camshaft timing gear direct heat is enclosed within on camshaft cylindrical, because camshaft and timing gear are that interference hot jacket is connected, timing gear cannot be changed separately, as long as the two has the damage just can only camshaft and timing gear integral replacing.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of camshaft and timing gear linkage structure are provided, it is simple in structure, adopt hollow type camshaft to be connected with timing gear by spindle nose, torsional strength is reliable, with the obvious advantage at aspects such as lightweight, energy saving and cost lowering, optimization of material couplings, can ensure that timing gear are consistent with Placement and the existing one-piece camshaft of camshaft simultaneously.
According to technological scheme provided by the invention: camshaft and timing gear linkage structure, comprise camshaft and timing gear, it is characterized in that: also comprise spindle nose, described camshaft is hollow type camshaft, hollow type camshaft is connected with timing gear by spindle nose, and timing gear are dismounting and change separately.
As a further improvement on the present invention, described spindle nose first end is fixedly connected with hollow type camshaft, and spindle nose the second end is provided with interior threaded hole, and timing gear are fixedly connected with spindle nose the second end by the bolt being arranged in interior threaded hole.
As a further improvement on the present invention, described spindle nose first end adopts interference fit to be connected with the endoporus of hollow type camshaft, or adopts interference fit and be welded to connect, or adopts sintering to connect, or adopts annular knurl to connect.
As a further improvement on the present invention, described spindle nose first end is pressed in the endoporus of hollow type camshaft by hot jacket method or cold cover method.
As a further improvement on the present invention, described spindle nose first end is provided with location convex shoulder, and this location convex shoulder coordinates location with the end face of hollow type camshaft.
As a further improvement on the present invention, be provided with step in location in the endoporus of described hollow type camshaft, in this location, step coordinates location with the end face of spindle nose first end.
As a further improvement on the present invention, described timing gear end face is provided with positioning groove, described positioning groove internal diameter and spindle nose the second end external diameter are suitable, and timing gear coordinate location and fix by the bolt being arranged in interior threaded hole with spindle nose the second end by positioning groove.
the present invention, compared with prior art, has the following advantages:
(1) compared with the solid camshaft of traditional integral type, hollow type camshaft quality obviously alleviates that (data show, hollow type camshaft quality can alleviate 30% ~ 50%), and torsional strenght reliability meets usage requirement, meet complete machine lightweight demand, significant to engine energy-saving, hollow type camshaft cost of material is lower simultaneously.
(2) hollow type camshaft and spindle nose can be according to demand, and selection material is optimized coupling flexibly.
(3) spindle nose is with bolts with formal gear, and timing gear are dismounting and change separately, is conducive to reduce device maintenance maintenance cost.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is that spindle nose adopts interference fit to be connected with hollow type gear shaft, or adopts interference fit and be welded to connect, or the connection decomposing schematic representation that adopts sintering to connect.
Fig. 3 is the connection decomposing schematic representation that spindle nose adopts axial splines to be connected with hollow type gear shaft.
Fig. 4 is the connection decomposing schematic representation that spindle nose and hollow type gear shaft adopt horizontal spline joint.
Embodiment
Below in conjunction with concrete drawings and Examples, the invention will be further described.
As shown in the figure: the camshaft in embodiment and timing gear linkage structure are mainly made up of camshaft 1, spindle nose 2 and timing gear 3, described camshaft 1 is hollow type camshaft 1, and hollow type camshaft 1 is fixedly connected with spindle nose 2 first ends; Spindle nose 2 second ends are provided with interior threaded hole, described timing gear 3 end faces are provided with positioning groove 3a, described positioning groove 3a internal diameter and spindle nose 2 second end external diameters are suitable, timing gear 3 coordinate location and fix by the bolt 4 being arranged in interior threaded hole with spindle nose 2 second ends by positioning groove 3a, timing gear 3 are dismounting and change separately.
As shown in Fig. 2 ~ Fig. 4, in the present invention, described spindle nose 2 first ends can adopt various ways to be connected with the endoporus of hollow type camshaft 1, as adopted interference fit to connect, or adopt interference fit and are welded to connect, or adopting sintering to connect, or adopting annular knurl to connect.
While adopting interference fit to connect, the spindle nose of Interference size 2 first ends are pressed in the endoporus of hollow type camshaft 1 by hot jacket method or cold cover method, realize spindle nose 2 and be connected with the interference fit of hollow type camshaft 1; Then spindle nose 2 and hollow type camshaft 1 can be adopted the method for welding further fixing.
While adopting sintering to connect, the spindle nose of powder metallurgy forming 2 first ends are inserted in the endoporus of hollow type camshafts 1, then put into sintering furnace, the liquid state diffusion occurring by material granule on surface of contact realizes being connected of spindle nose 2 and hollow type camshaft 1.
While adopting annular knurl to connect, before assembling, first, by spindle nose 2 first end surface knurling moulding, then 2 first ends of the spindle nose after annular knurl moulding are pressed in the endoporus of hollow type camshaft 1, utilize plastic flow deformation and cutting deformation principle to realize being connected of spindle nose 2 and hollow type camshaft 1.Described annular knurl shape includes but not limited to axial annular knurl described in Fig. 3 and the horizontal annular knurl shown in Fig. 4; The endoporus of described hollow type camshaft 1 is circular or polygonal according to the corresponding Choice and process of annular knurl direction.
When specific operation, taking axial annular knurl Placement as example, adopt knurling tool, by plastic deformation, spindle nose 2 first end surface edgings are become to the between cog bar ditch shape parallel with spindle nose 2 axis, then spindle nose 2 first ends are press fit in the endoporus of hollow type camshaft 1, while utilizing spindle nose 2 and camshaft 1 to be connected, are inlaid into by spindle nose 2 shearing force that camshaft 1 inwall bears and ensure torsional strength.
In the present invention, spindle nose 2 stretches into the length of hollow type camshaft 1 and can locate by following two kinds of structures: one is to be provided with location convex shoulder 2a at spindle nose 2 first ends, and this location convex shoulder 2a coordinates location with the end face of hollow type camshaft 1.Another kind be in the endoporus of hollow type camshaft 1, be provided with location in step not shown, in this location, step coordinates location with the end face of spindle nose 2 first ends.
It should be noted that, above-mentioned several Placement is several conventional Placement that this law embodiment enumerates, in actual production is manufactured, hollow type camshaft 1 includes but not limited to the modes such as above-mentioned welding, sintering, mechanical connection with the Placement of spindle nose 2.
The present invention adopts hollow type camshaft 1 to be connected with timing gear 3 by spindle nose 2, meet under the prerequisite of torsional strength reliability in guarantee, the demand that adapts to complete machine lightweight, energy saving and cost lowering, optimization of material coupling, can ensure that timing gear 3 are consistent with Placement and the existing one-piece camshaft 1 of camshaft 1 simultaneously.
Claims (7)
1. camshaft and timing gear linkage structure, comprise camshaft (1) and timing gear (3), it is characterized in that: also comprise spindle nose (2), described camshaft (1) is hollow type camshaft (1), hollow type camshaft (1) is connected with timing gear (3) by spindle nose (2), timing gear (3) dismounting and change separately.
2. camshaft as claimed in claim 1 and timing gear linkage structure, it is characterized in that: described spindle nose (2) first end is fixedly connected with hollow type camshaft (1), spindle nose (2) second ends are provided with interior threaded hole, and timing gear (3) are fixedly connected with spindle nose (2) second ends by the bolt (4) being arranged in interior threaded hole.
3. camshaft as claimed in claim 2 and timing gear linkage structure, it is characterized in that: described spindle nose (2) first end adopts interference fit to be connected with the endoporus of hollow type camshaft (1), or adopt interference fit and be welded to connect, or adopt sintering to connect, or adopt annular knurl to connect.
4. camshaft as claimed in claim 3 and timing gear linkage structure, is characterized in that: described spindle nose (2) first end is pressed in the endoporus of hollow type camshaft (1) by hot jacket method or cold cover method.
5. camshaft as claimed in claim 2 and timing gear linkage structure, is characterized in that: described spindle nose (2) first end is provided with location convex shoulder (2a), and this location convex shoulder (2a) coordinates location with the end face of hollow type camshaft (1).
6. camshaft as claimed in claim 2 and timing gear linkage structure, is characterized in that: in the endoporus of described hollow type camshaft (1), be provided with step in location, in this location, step coordinates location with the end face of spindle nose (2) first end.
7. camshaft as claimed in claim 2 and timing gear linkage structure, it is characterized in that: described timing gear (3) end face is provided with positioning groove (3a), described positioning groove (3a) internal diameter and spindle nose (2) second end external diameters are suitable, and timing gear (3) coordinate location and fix by the bolt (4) being arranged in interior threaded hole with spindle nose (2) second ends by positioning groove (3a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410217339.7A CN103967952A (en) | 2014-05-21 | 2014-05-21 | Cam shaft and timing gear connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410217339.7A CN103967952A (en) | 2014-05-21 | 2014-05-21 | Cam shaft and timing gear connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103967952A true CN103967952A (en) | 2014-08-06 |
Family
ID=51237836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410217339.7A Pending CN103967952A (en) | 2014-05-21 | 2014-05-21 | Cam shaft and timing gear connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103967952A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104550969A (en) * | 2014-12-30 | 2015-04-29 | 北京有色金属研究总院 | Combined sintering and connecting method of ends of power metallurgy camshaft |
Citations (13)
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|---|---|---|---|---|
| JPS6137405U (en) * | 1984-08-10 | 1986-03-08 | 正信 中村 | Camshaft gear mounting structure |
| US4665766A (en) * | 1983-09-28 | 1987-05-19 | Nippon Piston Ring Co., Ltd. | Shaft member |
| US5826461A (en) * | 1996-01-22 | 1998-10-27 | Kaywood Products Corporation | Camshaft assembly and method of making the same |
| JP2000120409A (en) * | 1998-10-16 | 2000-04-25 | Nsk Ltd | Knockdown camshaft |
| US20050199201A1 (en) * | 2002-10-17 | 2005-09-15 | Ina-Schaeffler Kg | Electrically driven camshaft adjuster |
| DE102006032578A1 (en) * | 2006-07-13 | 2008-01-17 | Daimler Ag | Screw connection for connecting a camshaft of an internal combustion engine to a gearwheel comprises a central screw with a thread and a head arranged in the camshaft and a nut arranged in the component |
| CN201180569Y (en) * | 2008-03-21 | 2009-01-14 | 杜江 | General purpose petrol engine cam axle |
| CN201367925Y (en) * | 2009-03-17 | 2009-12-23 | 河南中轴集团有限公司 | Insertion-type cam shaft |
| CN201599384U (en) * | 2009-12-25 | 2010-10-06 | 湖南长丰动力有限责任公司 | Keyless cam shaft timing gear |
| KR20100010947U (en) * | 2009-04-29 | 2010-11-08 | 주식회사 서진캠 | End piece assemble structure for assemble type cam shaft |
| CN102146818A (en) * | 2011-03-22 | 2011-08-10 | 奇瑞汽车股份有限公司 | Installation structure for cam shaft and timing gear |
| CN202500981U (en) * | 2012-01-31 | 2012-10-24 | 奇瑞汽车股份有限公司 | Engine camshaft timing gear |
| CN203926466U (en) * | 2014-05-21 | 2014-11-05 | 中国第一汽车股份有限公司 | Camshaft and timing gear linkage structure |
-
2014
- 2014-05-21 CN CN201410217339.7A patent/CN103967952A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4665766A (en) * | 1983-09-28 | 1987-05-19 | Nippon Piston Ring Co., Ltd. | Shaft member |
| JPS6137405U (en) * | 1984-08-10 | 1986-03-08 | 正信 中村 | Camshaft gear mounting structure |
| US5826461A (en) * | 1996-01-22 | 1998-10-27 | Kaywood Products Corporation | Camshaft assembly and method of making the same |
| JP2000120409A (en) * | 1998-10-16 | 2000-04-25 | Nsk Ltd | Knockdown camshaft |
| US20050199201A1 (en) * | 2002-10-17 | 2005-09-15 | Ina-Schaeffler Kg | Electrically driven camshaft adjuster |
| DE102006032578A1 (en) * | 2006-07-13 | 2008-01-17 | Daimler Ag | Screw connection for connecting a camshaft of an internal combustion engine to a gearwheel comprises a central screw with a thread and a head arranged in the camshaft and a nut arranged in the component |
| CN201180569Y (en) * | 2008-03-21 | 2009-01-14 | 杜江 | General purpose petrol engine cam axle |
| CN201367925Y (en) * | 2009-03-17 | 2009-12-23 | 河南中轴集团有限公司 | Insertion-type cam shaft |
| KR20100010947U (en) * | 2009-04-29 | 2010-11-08 | 주식회사 서진캠 | End piece assemble structure for assemble type cam shaft |
| CN201599384U (en) * | 2009-12-25 | 2010-10-06 | 湖南长丰动力有限责任公司 | Keyless cam shaft timing gear |
| CN102146818A (en) * | 2011-03-22 | 2011-08-10 | 奇瑞汽车股份有限公司 | Installation structure for cam shaft and timing gear |
| CN202500981U (en) * | 2012-01-31 | 2012-10-24 | 奇瑞汽车股份有限公司 | Engine camshaft timing gear |
| CN203926466U (en) * | 2014-05-21 | 2014-11-05 | 中国第一汽车股份有限公司 | Camshaft and timing gear linkage structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104550969A (en) * | 2014-12-30 | 2015-04-29 | 北京有色金属研究总院 | Combined sintering and connecting method of ends of power metallurgy camshaft |
| CN104550969B (en) * | 2014-12-30 | 2017-05-17 | 北京有色金属研究总院 | Combined sintering and connecting method of ends of power metallurgy camshaft |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20140806 |