CN106643384A - Method for measuring accuracy of position of gas distribution roller - Google Patents
Method for measuring accuracy of position of gas distribution roller Download PDFInfo
- Publication number
- CN106643384A CN106643384A CN201611126912.9A CN201611126912A CN106643384A CN 106643384 A CN106643384 A CN 106643384A CN 201611126912 A CN201611126912 A CN 201611126912A CN 106643384 A CN106643384 A CN 106643384A
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- CN
- China
- Prior art keywords
- pressure
- cam
- paper slip
- rocker
- sensitive sensing
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- 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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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention provides a method for measuring the accuracy of the position of a gas distribution roller, and the method comprises the following steps: (1), placing a pressure-sensitive paper scrip at one side of a gap of a contact part of a cam of a cam shaft and a rocking roller, continuously rotating the cam shaft, and enabling the pressure-sensitive paper scrip to pass through the gap of the contact part of the cam of the cam shaft and the rocking roller; (2), observing the impression of the pressure-sensitive paper scrip, and judging whether the rocking roller is installed in place or not. Compared with a color painting inspection method, the method provided by the invention is advantageous in that the impression is clear and the assembled parts are not polluted. The method can give a contact stress value on an instrument according to the impression.
Description
Technical field
The invention belongs to internal combustion engine Design and machining of products technical field, more particularly, to a kind of diesel oil machine testing gazogene
The method of structure roller installation position accuracy.
Background technology
Diesel engine overhead camshaft valve actuating mechanism mainly has two kinds of typical structure patterns.One kind is that the cam of camshaft directly drives
Valve is opened after dynamic pressure bridge or guide, another kind is that cam of camshaft rocking arm of the direct drive with roller opens valve.The first
It is not high to the installation site accuracy requirement of breaking the bridge or guide during situation, and the installation site of second situation pair roller rocking arm is accurate
Exactness then requires higher.Cam is acted in the plane of breaking the bridge or guide when reason is the first situation, because of breaking the bridge or guide
Plane contact area is larger, and cam has very big adjustment leeway with the contact of breaking the bridge or guide, does not interfere with the normal work of mechanism
Make；Cam is acted on rocker-arm roller during second situation, the contact line of cam and rocker-arm roller contact site must and cam
With the diameter parallel of roller, i.e., it is very high to the installation site accuracy requirement of rocking arm.
To reduce contact stress and reducing friction power loss, top load, high rotating speed diesel engine shake frequently with overhead camshaft band
The Design of Valve of arm roller, its dynamics calculation is carried out the contact stress of Contact Pair by zero deflection, normal line contact conditions
Calculate, and safety is estimated by specification.
When diesel engine real machine is assembled, because of the mismachining tolerance and alignment error of part, the contact condition of cam and roller is caused
Generation deviation, because the actual contact stress of Contact Pair is more than the allowable stress for allowing when diesel engine works, it is different often to there is roller in Jing
Normal abrasion condition, so cause catastrophe failure.
The cost control and actual process manufacture level produced because of part batch limits the rolling wheel wear for causing, small quantities of in high accuracy
Amount plus man-hour can avoid generation.Produce in enormous quantities and there must be a kind of inspection method of advantages of simple when assembling, test rocking arm
Installation accuracy, be adjusted in good time and change, the large area that can avoid problems occurs, improve product reliability
Property.
The content of the invention
In view of this, it is contemplated that proposing a kind of measuring method of distribution scroll wheel positions accuracy, to realize that rocking arm is pacified
Being convenient for measuring for exactness is trued up, and then is adjusted in good time and is changed, improve the reliability of product.
To reach above-mentioned purpose, the technical scheme is that what is be achieved in that：
A kind of measuring method of distribution scroll wheel positions accuracy, comprises the following steps：
(1) pressure-sensitive sensing paper slip is placed on into the cam of camshaft and the gap of rocker-arm roller contact site that assembling is completed
Side, and continue rotation cam axle so that in gap of the pressure-sensitive sensing paper slip by the cam of camshaft and rocker-arm roller contact site
Pass through；
(2) impression of pressure-sensitive sensing paper slip is observed, judges whether rocker-arm roller is installed suitable.
Further, the width of the pressure-sensitive sensing paper slip in the step (1) is equal with cam of camshaft width, length model
Enclose for 25mm～35mm.
Further, the pressure-sensitive sensing paper slip in the step (1) is by cutting out acquisition.
Further, it is 30mm that the length of the pressure-sensitive sensing paper slip in the step (1) is optimum.
Further, in the step (1) pressure-sensitive sensing paper slip is being placed on the cam of camshaft that completes of assembling and is being shaken
Before the side in the gap at arm roller contact position, cleaning treatment should be carried out to the surface of the cam of camshaft and rocker-arm roller.
Further, should make when carrying out cleaning treatment to the surface of the cam of camshaft and rocker-arm roller in the step (1)
Wiping cleaning treatment is carried out with cleaning agent.
Further, the cleaning treatment that the cam of camshaft and rocker-arm roller surface are carried out can be limited in the step (1)
In the scope of pressure-sensitive sensing paper slip length direction.
Further, in the step (1) pressure-sensitive paper slip is sensed by the cam of camshaft and rocker-arm roller contact site
During passing through in gap, before the cam of camshaft and the pressure-sensitive induction apparatuss paper slip that is clamped than roller, should continue
Hand-held pressure-sensitive sensing paper slip, and aligning direction.
Further, the impression of the pressure-sensitive sensing paper slip of observation in the step (2) should include using tape measure impression
Physical dimension and with standard impression contrast.
Relative to prior art, the measuring method of distribution scroll wheel positions accuracy of the present invention has the advantage that：
(1) measuring method of distribution scroll wheel positions accuracy of the present invention, compared with smear test, with impression it is clear,
Do not pollute the advantage of part after assembling.
(2) measuring method of distribution scroll wheel positions accuracy of the present invention, can be given on instrument according to impression
Contact stress value.
Description of the drawings
The accompanying drawing for constituting the part of the present invention is used for providing a further understanding of the present invention, the schematic reality of the present invention
Apply example and its illustrate, for explaining the present invention, not constituting inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the schematic diagram of the diesel oil machine testing valve actuating mechanism roller installation position described in the embodiment of the present invention；
Fig. 2 is the roller installation position Cleaning Principle schematic diagram described in the embodiment of the present invention.
Description of reference numerals：
1- rocking arms；2- rocker-arm rollers；The 3- cams of camshaft；4- camshafts；The pressure-sensitive sensing paper slips of 5-；The pressure-sensitive sensing letterweights of 6-
Trace.
Specific embodiment
It should be noted that in the case where not conflicting, the embodiment and the feature in embodiment in the present invention can phase
Mutually combination.
In describing the invention, it is to be understood that term " " center ", " longitudinal direction ", " horizontal ", " on ", D score,
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward " is
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than indicates or dark
Showing the device or element of indication must have specific orientation, with specific azimuth configuration and operation therefore it is not intended that right
The restriction of the present invention.Additionally, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicating or implying phase
To importance or the implicit quantity for indicating indicated technical characteristic.Thus, the feature for defining " first ", " second " etc. can
To express or implicitly include one or more this feature.In describing the invention, unless otherwise stated, " multiple "
It is meant that two or more.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
As illustrated in fig. 1 and 2, the present invention is comprised the following steps：
(1) pressure-sensitive sensing paper slip 5 is placed on the seam for assembling the cam of camshaft 3 and contact site of rocker-arm roller 2 for completing
The side of gap, and continue rotation cam axle 4 so that pressure-sensitive sensing paper slip 5 is by the cam of camshaft 3 and the contact site of rocker-arm roller 2
Gap in pass through；
(2) impression of pressure-sensitive sensing paper slip 5 is observed, judges whether rocker-arm roller 2 is installed suitable.
The width of the pressure-sensitive sensing paper slip 5 in the step (1) is equal with the width of the cam of camshaft 3, and length range is
25mm～35mm.
Pressure-sensitive sensing paper slip 5 in the step (1) is by cutting out acquisition.
It is 30mm that the length of the pressure-sensitive sensing paper slip 5 in the step (1) is optimum.
Pressure-sensitive sensing paper slip 5 is being placed on into the cam of camshaft 3 and the rocker-arm roller 2 that assembling is completed in the step (1)
Before the side in the gap of contact site, cleaning treatment should be carried out to the surface of the cam of camshaft 3 and rocker-arm roller 2.
Cleaning agent should be used when carrying out cleaning treatment to the surface of the cam of camshaft 3 and rocker-arm roller 2 in the step (1)
Carry out wiping cleaning treatment.
Pressure-sensitive sense can be confined to the cleaning treatment that the cam of camshaft 3 and the surface of rocker-arm roller 2 are carried out in the step (1)
Answer the scope of the length direction of paper slip 5.
In gap in the step (1) in pressure-sensitive sensing paper slip 5 by the cam of camshaft 3 and the contact site of rocker-arm roller 2
By during, before the cam of camshaft 3 and rocker-arm roller 2 are clamped pressure-sensitive induction apparatuss paper slip 5, should be persistently hand-held
Pressure-sensitive sensing paper slip 5, and aligning direction.
The impression of the pressure-sensitive sensing paper slip 5 of observation in the step (2) should include using the pressure-sensitive sensing letterweight of tape measure
The physical dimension of trace 6 is simultaneously contrasted with standard impression.
Generally, valve actuating mechanism does not need this detection, but for high speed, top load diesel engine are due to cam crown of roll
The contact stress of rocker-arm roller 2 in wheel 3 and rocking arm 1 is very high, relative between the rocker-arm roller 2 in the cam of camshaft 3 and rocking arm 1
Position seems extremely important.
After the completion of the cam of camshaft 3 and the surface clean of rocker-arm roller 2, hand-held pressure-sensitive sensing paper slip 5 presses the direction of arrow in Fig. 2
Pressure-sensitive sensing paper slip 5 is placed on into the side of the cam of camshaft 3 and the gap of the contact site of rocker-arm roller 2, and is persistently rotated convex
Wheel shaft 4 so that pressure-sensitive sensing paper slip 5 passes through in the gap by the cam of camshaft 3 with the contact site of rocker-arm roller 2, is covered with
The pressure-sensitive sensing paper slip of pressure-sensitive sensing letterweight trace, using the pressure-sensitive sensing letterweight trace 6 of tape measure physical dimension and with standard pressure
Trace is contrasted, and determines whether rocker-arm roller 2 is installed suitable.
Because camshaft 4 is difficult adjustment after assembling, the position of rocking arm 1 can only be adjusted.The method of adjustment is
Lock again after the locking device for unclamping fixed rocking arm 1.Again the rocker-arm roller 2 in rocking arm 1 after locking carries out again impression inspection
Survey, till satisfaction is required.
The method of Valve Gear of Diesel roller installation position accuracy of the present invention, with directly perceived, easy, flexible
On-line checking feature, the roller and cam produced in enormous quantities and cause because of roller assembling accuracy difference when assembling can be prevented effectively from
Between inordinate wear problem, the functional reliability of diesel engine can be effectively improved.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (9)
1. a kind of measuring method of distribution scroll wheel positions accuracy, it is characterised in that：Comprise the following steps：
(1) pressure-sensitive sensing paper slip 5 is placed on into the cam of camshaft 3 and the gap of the contact site of rocker-arm roller 2 that assembling is completed
Side, and continue rotation cam axle 4 so that pressure-sensitive sensing paper slip 5 is by the cam of camshaft 3 and the seam of the contact site of rocker-arm roller 2
Pass through in gap；
(2) impression of pressure-sensitive sensing paper slip 5 is observed, judges whether rocker-arm roller 2 is installed suitable.
2. the measuring method of distribution scroll wheel positions accuracy according to claim 1, it is characterised in that：The step (1)
In pressure-sensitive sensing paper slip 5 width it is equal with the width of the cam of camshaft 3, length range be 25mm～35mm.
3. the measuring method of distribution scroll wheel positions accuracy according to claim 1, it is characterised in that：The step (1)
In pressure-sensitive sensing paper slip 5 by cutting out acquisition.
4. the measuring method of distribution scroll wheel positions accuracy according to claim 2, it is characterised in that：The step (1)
In pressure-sensitive sensing paper slip 5 length it is optimum be 30mm.
5. the measuring method of distribution scroll wheel positions accuracy according to claim 1, it is characterised in that：The step (1)
In in the side that pressure-sensitive sensing paper slip 5 is placed on the cam of camshaft 3 that completes of assembling and the gap of the contact site of rocker-arm roller 2
Before, cleaning treatment should be carried out to the surface of the cam of camshaft 3 and rocker-arm roller 2.
6. the measuring method of distribution scroll wheel positions accuracy according to claim 5, it is characterised in that：The step (1)
In should carry out wiping cleaning treatment using cleaning agent when carrying out cleaning treatment to the surface of the cam of camshaft 3 and rocker-arm roller 2.
7. the measuring method of distribution scroll wheel positions accuracy according to claim 5, it is characterised in that：The step (1)
In the cleaning treatment that the cam of camshaft 3 and the surface of rocker-arm roller 2 are carried out can be confined to it is pressure-sensitive sensing the length direction of paper slip 5 model
Enclose.
8. the measuring method of distribution scroll wheel positions accuracy according to claim 1, it is characterised in that：The step (1)
In pass through in gap in pressure-sensitive sensing paper slip 5 by the cam of camshaft 3 and the contact site of rocker-arm roller 2 during, in cam
Axis cam 3 and rocker-arm roller 2 are clamped before pressure-sensitive induction apparatuss paper slip 5, should continue hand-held pressure-sensitive sensing paper slip 5, and right
Quasi- direction.
9. the measuring method of distribution scroll wheel positions accuracy according to claim 1, it is characterised in that：The step (2)
In the pressure-sensitive sensing paper slip 5 of observation impression should include using the physical dimension of the pressure-sensitive sensing letterweight trace 6 of tape measure and with mark
Quasi- impression contrast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611126912.9A CN106643384A (en) | 2016-12-08 | 2016-12-08 | Method for measuring accuracy of position of gas distribution roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611126912.9A CN106643384A (en) | 2016-12-08 | 2016-12-08 | Method for measuring accuracy of position of gas distribution roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106643384A true CN106643384A (en) | 2017-05-10 |
Family
ID=58824281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611126912.9A Pending CN106643384A (en) | 2016-12-08 | 2016-12-08 | Method for measuring accuracy of position of gas distribution roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106643384A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107607016A (en) * | 2017-10-24 | 2018-01-19 | 江门市长华集团有限公司 | A kind of cubing of air valve of motor cycle rocking arm |
Citations (5)
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|---|---|---|---|---|
| JPH0420961A (en) * | 1990-05-15 | 1992-01-24 | Brother Ind Ltd | Image forming device |
| CN1607380A (en) * | 2003-10-14 | 2005-04-20 | 晔中科技有限公司 | Method for measuring tyre pressure distribution |
| CN203519157U (en) * | 2013-10-22 | 2014-04-02 | 杭州市上城区青少年科技辅导员协会 | Horizontal swinging detection device |
| CN103868633A (en) * | 2014-03-17 | 2014-06-18 | 中国北方发动机研究所(天津) | Method for testing contact stress of overhead gas distribution camshaft of engine |
| CN204897924U (en) * | 2015-07-17 | 2015-12-23 | 葛永超 | Bladder cancer heredity detect reagent box |
-
2016
- 2016-12-08 CN CN201611126912.9A patent/CN106643384A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0420961A (en) * | 1990-05-15 | 1992-01-24 | Brother Ind Ltd | Image forming device |
| CN1607380A (en) * | 2003-10-14 | 2005-04-20 | 晔中科技有限公司 | Method for measuring tyre pressure distribution |
| CN203519157U (en) * | 2013-10-22 | 2014-04-02 | 杭州市上城区青少年科技辅导员协会 | Horizontal swinging detection device |
| CN103868633A (en) * | 2014-03-17 | 2014-06-18 | 中国北方发动机研究所(天津) | Method for testing contact stress of overhead gas distribution camshaft of engine |
| CN204897924U (en) * | 2015-07-17 | 2015-12-23 | 葛永超 | Bladder cancer heredity detect reagent box |
Non-Patent Citations (1)
| Title |
|---|
| 张丽，胡立萍，强智臻，陈闯: "面压试验在解决配气摇臂滚轮偏磨问题中的应用研究", 《内燃机》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107607016A (en) * | 2017-10-24 | 2018-01-19 | 江门市长华集团有限公司 | A kind of cubing of air valve of motor cycle rocking arm |
| CN107607016B (en) * | 2017-10-24 | 2023-06-13 | 江门市长华集团有限公司 | Gauge for motorcycle valve rocker |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |
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| RJ01 | Rejection of invention patent application after publication |