CN203962064U - Annular knurl press-fits assembled camshaft - Google Patents
Annular knurl press-fits assembled camshaft Download PDFInfo
- Publication number
- CN203962064U CN203962064U CN201420199527.7U CN201420199527U CN203962064U CN 203962064 U CN203962064 U CN 203962064U CN 201420199527 U CN201420199527 U CN 201420199527U CN 203962064 U CN203962064 U CN 203962064U
- Authority
- CN
- China
- Prior art keywords
- axis body
- cam
- press
- annular knurl
- fits
- 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.)
- Expired - Lifetime
Links
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Gears, Cams (AREA)
Abstract
The utility model discloses a kind of annular knurl and press-fit assembled camshaft, comprise axis body (1), and be fitted in pairs the cam (2) on described axis body (1), on the outer wall of described axis body (1), the position that press-fits of corresponding cam (2) is provided with annular knurl (A), then cam (2) is fitted on axis body (1) successively.Improve cam by annular knurl and press-fit reliability on axis body, improve the anti-twisting property of camshaft, meet the special occasions that some torque demands are high and use, simple in structure, design ingeniously, functional effect is remarkable.
Description
Technical field
The utility model relates to a kind of internal combustion (IC) engine camshaft, is specifically related to a kind of assembled camshaft.
Background technique
Camshaft is as the core component of motor, and its performance directly affects the overall performance of vehicle, along with improving constantly that people pursue motor car engine performance, camshaft is also had higher requirement.
Engine cam the earliest, by casting or forge realization, whole camshaft adopts commaterial, by creating after heat treatment, machining, complex process, weight is large, cost of production is high, and the design of component is dumb, can not meet the requirement of motor light-weight design.
Afterwards, occurred assembled camshaft, axis body and cam design separately, and recombinant is installed together, and has realized lightweight, has reduced process complexity.But, because cam is only fitted on axis body by interference fit, make assembled camshaft anti-twisting property poor, cannot bear larger moment of torsion, use to meet the special occasions that some torque demands are high.
Model utility content
Because the above-mentioned defect that prior art exists, the utility model aims to provide the assembled camshaft that a kind of anti-twisting property is strong.
For this reason, the technological scheme that the utility model adopts is: a kind of annular knurl press-fits assembled camshaft, comprise axis body (1), and be fitted in pairs the cam (2) on described axis body (1), it is characterized in that: on the outer wall of described axis body (1), the position that press-fits of corresponding cam (2) is provided with annular knurl (A), then cam (2) is fitted on axis body (1) successively.
Be preferably, described cam (2) adopts Bearing Steel to make, and axis body (1) adopts alloy steel pipe to make, and selects by material, to improve camshaft hardness, increases wear resistance, improves contact stress.
Described cam (2) is 2 pairs, 3 pairs, 4 pairs or 6 pairs.
On described axis body (1), be also pressed with a cam of injection pump (3), on the outer wall of described axis body (1), the position that press-fits of corresponding cam of injection pump (3) is also provided with annular knurl (A).
The beneficial effects of the utility model are: on the outer wall of axis body, annular knurl is set up in the position that press-fits of corresponding cam, again cam is fitted on axis body successively, improve cam by annular knurl and press-fit reliability on axis body, improve the anti-twisting property of camshaft, meet the special occasions that some torque demands are high and use, show by antitorque test result, moment of torsion has improved more than 3 times; And simple in structure, design ingenious, functional effect is remarkable.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the decomposing schematic representation of Fig. 1.
Embodiment
Below by embodiment also by reference to the accompanying drawings, the utility model is described in further detail:
In conjunction with Fig. 1---shown in Fig. 2, a kind of annular knurl press-fits assembled camshaft, and mainly by axis body 1, and the cam 2 being fitted in pairs on axis body 1 forms.
On the outer wall of axis body 1, the position that press-fits of corresponding cam 2 is provided with annular knurl A; Be pressed with several cams 2, on axis body 1 outer wall, correspondence arranges a few annular knurl A of place; By frock, cam 2 is fitted on axis body 1 successively again.
2 pairs, 3 pairs, 4 pairs or 6 pairs of the many employings of logarithm of cam 2, also can arrange according to specific needs.Axis body 1 adopts alloy steel pipe to make, and also can adopt Stainless Steel Tube to make.Cam 2 preferably adopts Bearing Steel to make.
On axis body 1, be also pressed with a cam of injection pump 3, on the outer wall of axis body 1, the position that press-fits of corresponding cam of injection pump 3 is also provided with annular knurl A.Certainly, also can on axis body 1, press-fit thrust cam etc., and in the position that press-fits of thrust cam, annular knurl is set.
Claims (4)
1. an annular knurl press-fits assembled camshaft, comprise axis body (1), and be fitted in pairs the cam (2) on described axis body (1), it is characterized in that: on the outer wall of described axis body (1), the position that press-fits of corresponding cam (2) is provided with annular knurl (A), then cam (2) is fitted on axis body (1) successively.
2. press-fit assembled camshaft according to annular knurl claimed in claim 1, it is characterized in that: described cam (2) adopts Bearing Steel to make, axis body (1) adopts alloy steel pipe to make.
3. press-fit assembled camshaft according to the annular knurl described in claim 1 or 2, it is characterized in that: described cam (2) is 2 pairs, 3 pairs, 4 pairs or 6 pairs.
4. press-fit assembled camshaft according to annular knurl claimed in claim 3, it is characterized in that: on described axis body (1), be also pressed with a cam of injection pump (3), on the outer wall of described axis body (1), the position that press-fits of corresponding cam of injection pump (3) is also provided with annular knurl (A).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420199527.7U CN203962064U (en) | 2014-04-23 | 2014-04-23 | Annular knurl press-fits assembled camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420199527.7U CN203962064U (en) | 2014-04-23 | 2014-04-23 | Annular knurl press-fits assembled camshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203962064U true CN203962064U (en) | 2014-11-26 |
Family
ID=51922663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420199527.7U Expired - Lifetime CN203962064U (en) | 2014-04-23 | 2014-04-23 | Annular knurl press-fits assembled camshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203962064U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108788717A (en) * | 2018-06-14 | 2018-11-13 | 成都金顶精密铸造有限公司 | A kind of assembly method of assembled camshaft |
-
2014
- 2014-04-23 CN CN201420199527.7U patent/CN203962064U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108788717A (en) * | 2018-06-14 | 2018-11-13 | 成都金顶精密铸造有限公司 | A kind of assembly method of assembled camshaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141126 |
|
| CX01 | Expiry of patent term |