CN104359660A - Valve spring rigidity testing method and device - Google Patents
Valve spring rigidity testing method and device Download PDFInfo
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- CN104359660A CN104359660A CN201410623513.8A CN201410623513A CN104359660A CN 104359660 A CN104359660 A CN 104359660A CN 201410623513 A CN201410623513 A CN 201410623513A CN 104359660 A CN104359660 A CN 104359660A
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- spring
- valve spring
- rigidity
- slide block
- dovetail groove
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Abstract
The invention discloses a valve spring rigidity testing method and device. A calibrated spring and a valve spring to be tested are serially connected and given certain deformation, the two springs certainly bear identical pressures, and according to a relation between spring rigidity and deformation, namely the rigidity ratio of the springs being identical to an inverse ratio of deformations of the springs when stresses are identical, the rigidity of the valve spring can be obtained. A pressure rod is manually turned, the front end of the pressure rod is moved leftward to push a pressure slider to slide leftward, the calibrated spring and the valve spring to be tested experience certain leftward deformations, and the rigidity of the valve spring to be tested can be determined through displacements indicated by two pointers. The method is simple, convenient, reliable and convenient to popularize.
Description
Technical field
The present invention relates to a kind of valve spring rigidity measuring method and device, belong to the detection technique field of engine valve spring.
Background technology
Valve actuating mechanism is one of most important ingredient of motor car engine, and valve spring is the strength member of valve actuating mechanism valve group.Valve spring is generally constant pitch cylindrically coiled spring, can closely fit with valve seating or valve retainer when its function is and ensures valve-closing, and overcome the inertial force that valve actuating mechanism produces when valve opening, driving member is not departed from mutually by cam production all the time, therefore valve spring should have suitable rigidity.
The method that current detection valve spring rigidity is commonly used has two kinds: first method detects on spring rate tester, second method is with experience determination spring common used material, steel wire diameter, the parameter such as mean diameter of coil and free height of measuring spring, calculate rigidity value finally by spring design formula again.But, the first detection method due to equipment cost large, the enterprise that some are infrequently used or in individual service engine situation, this detection method is difficult to realize.Second method is experience due to what utilize, and experience often has uncertainty, and the spring rate therefore finally calculated also has uncertainty.
Summary of the invention
The object of the invention is: the defect existed for prior art, a kind of valve spring rigidity measuring method and device are provided, by the demarcation spring of rigidity value known in device and then the rigidity determining detected valve spring, and this apparatus structure is simple, easy to use, the deficiency of existing detection method can be overcome.
Technical scheme of the present invention
1, a kind of valve spring rigidity measuring method, the method is connected demarcating spring with the form of connecting with detected valve spring, give its certain deflection again, pressure then suffered by two springs must be identical, again according to the relation of spring rate and deflection, namely be stressed identical time, the ratio of rigidity of two springs equals the inverse ratio of two spring deflections, just can obtain the rigidity of required spring.
A kind of valve spring rigidity detection device, comprise chassis, chassis arranges through dovetail groove, left cladding plate and right cladding plate are installed respectively at two ends, chassis, middle block face is placed in the middle part of dovetail groove and forms left dovetail groove and right dovetail groove, demarcation slide block and pressure slider are connected with left dovetail groove and right dovetail groove respectively, demarcate spring fitting between left cladding plate and demarcation slide block, and valve spring is arranged on demarcates between slide block and pressure slider.
In aforesaid valve spring rigidity detection device, press rods is passed right cladding plate and is connected with pressure slider, is threaded connection between press rods and right cladding plate.
In aforesaid valve spring rigidity detection device, spring base and Conical Projectile spring abutment are set respectively at demarcation slide block left and right side.
In aforesaid valve spring rigidity detection device, post scale in side, chassis, demarcate on slide block and pressure slider and pointer one and pointer two are set respectively.
Owing to have employed technique scheme, compared with existing valve spring detection method, the present invention is torsional pressure bar manually, press rods front end is moved to the left and promotes pressure slider to slide left, thus demarcation spring and valve spring to be detected can be made to produce a certain amount of deformation quantity left, just can be determined the rigidity of valve spring to be detected again by the displacement of two pointer instructions, the method is simple, convenient, and reliable, is convenient to promote.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention;
Accompanying drawing 2 is body chassis schematic diagram of the present invention;
Accompanying drawing 3 is front views of demarcation slide block of the present invention;
Accompanying drawing 4 is right views of demarcation slide block of the present invention.
Embodiment
Below in conjunction with accompanying drawing to the present invention with being described in further detail, but not as any limitation of the invention.
Embodiments of the invention: a kind of valve spring rigidity measuring method, the method is connected demarcating spring with the form of connecting with detected valve spring, give its certain deflection again, pressure then suffered by two springs must be identical, again according to the relation of spring rate and deflection, namely be stressed identical time, the ratio of rigidity of two springs equals the inverse ratio of two spring deflections, just can obtain the rigidity of required spring.
A kind of valve spring rigidity detection device constructed by said method, as shown in drawings, comprises chassis 1, and the scale face 21 on chassis 1 is in order to paste scale 3, and the left side on chassis 1 is in order to fixing left cladding plate 11, and the right side on chassis 1 is in order to fixing right cladding plate 6; Demarcate the slipping plane 18 of slide block 9 to mate with the support slipping plane 13 on chassis 1, can horizontally slip on the support slipping plane 13 on chassis 1, the confined planes 20 demarcating slide block 9 matches with the left dovetail groove inclined-plane 14 of the upper left dovetail groove in chassis 1 12, can prevent and treat to demarcate before and after slide block 9 and rock; Known rigidity value must demarcate spring 10 by left cladding plate 11 and demarcate slide block 9 separately the protruding spring base 17 closed with its diameter compatible support; The middle block face 22 on chassis 1 demarcates slide block 9 to right-hand member slip in order to stop, and when demarcating slide block 9 and being close to middle block face 22, demarcates slide block 9 and be just in free elongation state with the demarcation spring 10 of left cladding plate 11 intermediate supports; Pointer 1 is pasted onto to be demarcated before slide block 9, in order to the distance of indicateing arm fixed slider 9 movement; Pointer 24 is pasted onto before pressure slider 7, in order to the distance of indicated pressure slide block 7 movement; Pressure slider 7 slides at the right dovetail groove 15 on chassis 1, and its slip is identical with demarcating slide block 9 with limit method, and the frustum spring base on pressure slider 7 is corresponding with the frustum spring base 19 demarcated on slide block 9, in order to support the valve spring 8 to be detected of different inner diameters; Press rods 5 has the square thread matched with right cladding plate 6 internal thread center pit, rear end is welded with the handle conveniently grasping and can twist, and by rotation pressure bar 5 handle, press rods 5 left end can be made to promote pressure slider 7 and slide left.
Concrete using method
Before using this device, press rods handle should be grasped rotate counterclockwise press rods is moved right, manually promote pressure slider again to slide to the right, and make the distance between the frustum spring base of two correspondences be greater than the drift of valve spring to be measured, now, valve spring to be measured is put on frustum spring base, hold press rods handle to rotate clockwise, frustum seat surface on pressure slider is contacted with valve spring to be measured just, and writes down pointer one and the scale indicated by pointer two respectively; Continue to rotate clockwise press rods handle, pressure is slided promote valve spring to be measured to move to left suitable distance, now write down pointer one and the scale indicated by pointer two more respectively; The scale correspondence of twice each pointer instruction is subtracted each other; Now the difference of corresponding two scales of note pointer one is S1, and the difference of corresponding two scales of pointer two is S2; The deflection of S1 to be exactly in fact known rigidity value the be demarcation spring of K1, S2 is exactly in fact the deflection summation of demarcating spring and valve spring to be detected, now, the deflection of valve spring is exactly S2-S1, and this device can calibrate by identical two springs before dispatching from the factory, it is F that the slipping plane demarcated on slide block is subject to direction friction force to the right, then the rigidity of valve spring now to be detected is for being: (K1*S1+F)/(S2-S1).
Rotated counterclockwise by press rods handle, pressure slider under the pressure of two springs, along with sliding in press rods left side, can take off valve spring to be measured to the right after valve spring is loosened again.
For making the final result detected more accurate, repeatedly can repeat said process, finally averaging.
Claims (5)
1. a valve spring rigidity measuring method, it is characterized in that: the method is connected demarcating spring with the form of connecting with detected valve spring, give its certain deflection again, pressure then suffered by two springs must be identical, again according to the relation of spring rate and deflection, namely be stressed identical time, the ratio of rigidity of two springs equals the inverse ratio of two spring deflections, just can obtain the rigidity of required spring.
2. a valve spring rigidity detection device, comprise chassis (1), it is characterized in that: on chassis (1), through dovetail groove is set, left cladding plate (11) and right cladding plate (6) are installed respectively at chassis (1) two ends, middle block face (22) is placed in the middle part of dovetail groove and forms left dovetail groove (12) and right dovetail groove (15), demarcation slide block (9) and pressure slider (7) are connected with left dovetail groove (12) and right dovetail groove (15) respectively, demarcate spring (10) to be arranged on left cladding plate (11) and to demarcate between slide block (9), valve spring (8) is arranged on demarcates between slide block (9) and pressure slider (7).
3. valve spring rigidity detection device according to claim 2, is characterized in that: press rods (5) is through right cladding plate (6) and be connected with pressure slider (7), is threaded connection between press rods (5) and right cladding plate (6).
4. valve spring rigidity detection device according to claim 2, is characterized in that: arrange spring base (17) and Conical Projectile spring abutment (19) respectively at demarcation slide block (9) left and right side.
5. valve spring rigidity detection device according to claim 2, is characterized in that: post scale (3) in chassis (1) side, demarcates on slide block (9) and pressure slider (7) and arranges pointer one (2) and pointer two (4) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410623513.8A CN104359660A (en) | 2014-11-07 | 2014-11-07 | Valve spring rigidity testing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410623513.8A CN104359660A (en) | 2014-11-07 | 2014-11-07 | Valve spring rigidity testing method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104359660A true CN104359660A (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410623513.8A Pending CN104359660A (en) | 2014-11-07 | 2014-11-07 | Valve spring rigidity testing method and device |
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| Country | Link |
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| CN (1) | CN104359660A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036804A (en) * | 2017-06-13 | 2017-08-11 | 衡阳师范学院 | The device of batch detection device of spring stiffness coefficient |
| CN114798492A (en) * | 2022-05-06 | 2022-07-29 | 杭州卓易特科技有限公司 | Spring detection equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1208492A2 (en) * | 1984-03-15 | 1986-01-30 | Проектно-Технологический Институт "Сельхозтехпроект" | Arrangement for determining spring rigidity |
| SU1629798A1 (en) * | 1989-03-31 | 1991-02-23 | М. М. Кулаков | Method for determining spring rigidity |
| SU1758473A1 (en) * | 1989-12-11 | 1992-08-30 | Kulakov Mikhail M | Spring rigidity determining method |
| RU2029277C1 (en) * | 1990-01-02 | 1995-02-20 | Михаил Михайлович Кулаков | Method of testing springs for the presence of flaws |
| CN202420840U (en) * | 2012-01-20 | 2012-09-05 | 贵州精忠橡塑实业有限公司 | Dynamic rigidity testing machine of air spring |
| CN103376192A (en) * | 2012-04-19 | 2013-10-30 | 鸿富锦精密工业（深圳）有限公司 | Spring detection device |
| CN204228395U (en) * | 2014-11-07 | 2015-03-25 | 李帝书 | A kind of valve spring rigidity detection device |
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2014
- 2014-11-07 CN CN201410623513.8A patent/CN104359660A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1208492A2 (en) * | 1984-03-15 | 1986-01-30 | Проектно-Технологический Институт "Сельхозтехпроект" | Arrangement for determining spring rigidity |
| SU1629798A1 (en) * | 1989-03-31 | 1991-02-23 | М. М. Кулаков | Method for determining spring rigidity |
| SU1758473A1 (en) * | 1989-12-11 | 1992-08-30 | Kulakov Mikhail M | Spring rigidity determining method |
| RU2029277C1 (en) * | 1990-01-02 | 1995-02-20 | Михаил Михайлович Кулаков | Method of testing springs for the presence of flaws |
| CN202420840U (en) * | 2012-01-20 | 2012-09-05 | 贵州精忠橡塑实业有限公司 | Dynamic rigidity testing machine of air spring |
| CN103376192A (en) * | 2012-04-19 | 2013-10-30 | 鸿富锦精密工业（深圳）有限公司 | Spring detection device |
| CN204228395U (en) * | 2014-11-07 | 2015-03-25 | 李帝书 | A kind of valve spring rigidity detection device |
Non-Patent Citations (1)
| Title |
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| 齐霍米罗夫: "《黑色冶金热工手册第2卷第2分册》", 31 December 1958 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036804A (en) * | 2017-06-13 | 2017-08-11 | 衡阳师范学院 | The device of batch detection device of spring stiffness coefficient |
| CN107036804B (en) * | 2017-06-13 | 2023-10-17 | 衡阳师范学院 | Device for detecting spring stiffness coefficients in batches |
| CN114798492A (en) * | 2022-05-06 | 2022-07-29 | 杭州卓易特科技有限公司 | Spring detection equipment |
| CN114798492B (en) * | 2022-05-06 | 2024-05-14 | 杭州卓易特科技有限公司 | Spring detection equipment |
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Application publication date: 20150218 |