CN104457618A - Locating tool and method for measuring diesel engine nozzle - Google Patents
Locating tool and method for measuring diesel engine nozzle Download PDFInfo
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- CN104457618A CN104457618A CN201410669301.3A CN201410669301A CN104457618A CN 104457618 A CN104457618 A CN 104457618A CN 201410669301 A CN201410669301 A CN 201410669301A CN 104457618 A CN104457618 A CN 104457618A
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Abstract
A locating tool for measuring a diesel engine nozzle comprises a locating block and a pressing plate. The locating block is a cubic component and has an upper plane and a lower plane in parallel with the upper plane, an upper V-shaped groove used for locating the outer circular surface of the measured nozzle is formed in the upper plane, and two through holes are symmetrically formed in the two sides of the locating block; the pressing plate is a plate-like component, a reverse-V-shaped groove opposite to the upper V-shaped groove in the locating block is formed in a lower plane of the pressing plate, two mounting grooves are symmetrically formed in the two sides of the pressing plate, and two locking bolts penetrate through the two mounting grooves and the two through holes of the locating block so that the measured nozzle can be clamped and fixed on the locating block through the pressing plate. The invention further discloses a method for measuring the diesel engine nozzle through the locating tool. The taper angle of a spray hole of the nozzle can be conveniently measured, uniformity of the design basis, the machining basis and the measuring basis is ensured, reliability and accuracy of data measurement are improved, and the locating tool has the advantages of being large in measuring range, convenient to use, reasonable in structure and low in manufacturing cost.
Description
Technical field
The present invention relates to a kind of measurement instrument and measuring method, be specifically related to a kind of positioning tool for diesel nozzeles measurement and method, belong to Diesel Engine Technique Field.
Background technology
Nozzle (also claiming fuel injector) realizes fuel-injected vitals in Fuel Feeding System for Diesel Engine system, its function is the feature according to diesel engine mixed Daqu, fuel spray is changed into trickle oil droplet, and being ejected into specific position, firing chamber, nozzle should meet the requirement of dissimilar firing chamber to spray characteristics.In general, nozzle all has certain spray cone angle, accurately and reasonably jet nozzle angle can obtain good atomization quality, and make nozzle the diesel oil of in-cylinder injection reach atomization evenly, strong, the fuel particles refinement of penetration power, sufficient combustion effect, and then make diesel engine power play fully, reduce the discharge of oil consumption and pollution, increase the service life, greatly improve the economy of diesel engine.
In recent years along with the development in marine low speed diesel engine market, the size of the nozzle of various type diesel engine differed, and it is a technical barrier all the time that the horizontal direction of its Nozzle cone angle is measured.Existing technology is generally insert in spray orifice with the standard core rods of less than Nozzle (0.01-0.02mm), standard V shape iron uses the supplementary meanss such as padded gauge block to measure, not only measure efficiency low, and due to the cylindrical size of nozzle and different in size, lack again special positioning tooling fixture, frequent meeting occurs to cause nozzle to drop due to misoperation when measuring, the situation of mandrel fracture, causes no small economic loss; What is more, in batch production processing, often the entity of nozzle will be dissected, measure after the axis Linear cut of spray orifice, although measuring accuracy is higher like this too increase manufacturing cost.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of positioning tool of measuring for diesel nozzeles and method are provided, can gaging nozzle nozzle hole cone angle easily, improve reliability and the accuracy of measurement data.
For achieving the above object, the technical scheme taked of the present invention is as follows:
For the positioning tool that diesel nozzeles is measured, it comprises locating piece and pressing plate;
Described locating piece is a cube component, and it has the upper plane and lower plane that are parallel to each other, and on this, plane is provided with one for locating the upper V-shaped groove of the outer round surface of tested nozzle, and the both sides of this locating piece are provided with two through holes symmetrically;
Described pressing plate is tabular component, its lower plane is provided with an inverted v-shaped groove relative with the upper V-shaped groove of described locating piece, the both sides of this pressing plate are provided with two mounting grooves symmetrically, and two clamping screws are each passed through two through holes of this two mounting groove and described locating piece and are fixed on described locating piece by tested nozzle clamp by described pressing plate.
As further improvement, the lower plane of described locating piece is provided with one for locating the lower V-shaped groove of the outer round surface of tested nozzle.
As further improvement, the opening angle of the inverted v-shaped groove of the upper V-shaped groove of described locating piece, lower V-shaped groove and pressing plate is 90 ° or 120 °, symmetry≤0.005mm, the linearity≤0.01mm of V-shaped groove two groove face and flatness≤0.01mm.
As further improvement, the upper plane of described locating piece and the flatness≤0.005mm of lower plane, the depth of parallelism≤0.005mm of plane and lower plane on this.
Another technical scheme of the present invention is as follows:
The method that the diesel nozzeles adopting described positioning tool to realize is measured, its concrete steps are as follows:
1) standard core rods of less than described Nozzle of Diesel Engines for specification 0.01-0.02mm is inserted in this spray orifice;
2) described nozzle is put into the upper V-shaped groove of described locating piece, the outer round surface of described nozzle is located with V-shaped groove on this, and be fixed on described locating piece on by two clamping screws by described nozzle with described pressing plate, locking force is advisable to ensure that this nozzle can rotate around its axis;
3) connect the power supply of universal tool-measuring microscope and computer and enter relevant software systems;
4) with the baffle plate of micrometer lens alignment universal tool-measuring microscope, straightness error≤0.001mm is reached;
5) with magnetic block, the nozzle of clamping on locating piece is adsorbed on the baffle plate of universal tool-measuring microscope;
6) adjust the focal length of micrometer lens, find the optimum position of standard core rods head, afterbody focal length in the horizontal direction;
7) by the bolt-locking in universal tool-measuring microscope vertical pillars, by rotating " rice " wordline of micrometer lens, in eyepiece imaging system, carrying out matching with the angle of the standard core rods of reality, measure standard core rods angular error in the horizontal direction;
8) by rotating described nozzle in the axial direction, the optimum position of each horizontal direction focal length of adjustment standard core rods, obtains the angular error of Nozzle cone angle by " rice " wordline of micrometer lens after carrying out matching.
Compared with prior art, the invention has the beneficial effects as follows:
1, described positioning tool fixes with two symmetrical clamping screws, and clamping is very convenient;
2, present invention ensures that the unitarity of design basis, machining benchmark and measuring basis, make measurement data more reliable, accurate;
3, described upper V-shaped groove can be used for the measurement of diameter 8-18mm nozzle, lower V-shaped groove may be used for the measurement of direct 18-50mm nozzle, width meets location and the measurement of the diesel nozzeles of all shaft length substantially, therefore measurement range of the present invention is larger, the nozzle hole cone angle of the nozzle of diameter range 8-50mm can be measured, also can measure the horizontal cone angle of like parts.
4, there is easy to use, rational in infrastructure, cheap advantage.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Fig. 2 is the structural representation of locating piece.
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is the structural representation of pressing plate.
Fig. 5 is the clamping schematic diagram of measuring state of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the positioning tool for diesel nozzeles measurement of the present invention and measuring method thereof are described further, but should limit the scope of the invention with this.
Refer to Fig. 1, the positioning tool that diagram is used for diesel nozzeles measurement comprises locating piece 1, pressing plate 2 and two clamping screws 3.
Refer to Fig. 2 and Fig. 3, described locating piece 1 is a cube component, processing can be manufactured specially, also can carry out the transformation of the way on the basis of standard V shape iron to form, it has the upper plane 11 and lower plane 12 that are parallel to each other, the upper plane 11 of described locating piece 1 and the flatness≤0.005mm of lower plane 12, the depth of parallelism≤0.005mm of plane 11 and lower plane 12 on this.Described upper plane 11 is provided with one for locating the upper V-shaped groove 13 of the outer round surface of tested nozzle, this lower plane 12 is provided with one for locating the lower V-shaped groove 14 of the outer round surface of tested nozzle, and the both sides of described locating piece 1 are provided with two through holes 15 being suitable for M6 symmetrically.The upper V-shaped groove 13 of described locating piece 1 and the opening angle of lower V-shaped groove 14 are 90 ° or 120 °, symmetry≤0.005mm, the linearity≤0.01mm of V-shaped groove two groove face and flatness≤0.01mm.
Described upper V-shaped groove 13 is mainly used in the measurement of diameter 8-18mm nozzle, and lower V-shaped groove 14 is mainly used in the measurement of diameter 18-50mm nozzle; The width of described locating piece is 15mm, substantially meets location and the measurement of the marine low speed diesel engine nozzle of all shaft length.
Described pressing plate 2 is tabular component, and its lower plane is provided with an inverted v-shaped groove 21 relative with the upper V-shaped groove 13 of described locating piece 1, and the both sides of this pressing plate 2 are provided with two mounting grooves 22 symmetrically.The opening angle of the inverted v-shaped groove 21 of described pressing plate 2 is 90 ° or 120 °, symmetry≤0.005mm, the linearity≤0.01mm of V-shaped groove two groove face and flatness≤0.01mm.
Described two clamping screws 3 are each passed through two mounting grooves 22 of described pressing plate 2 and two through holes 15 of described locating piece 1 and are fixed on described locating piece 1 by tested nozzle clamp by described pressing plate 2.
Adopt the diesel nozzeles measuring method of above-mentioned positioning tool, see Fig. 5, its concrete steps are as follows:
1) insert in this spray orifice by the standard core rods of less than Nozzle of Diesel Engines for specification 0.01-0.02mm, the degree of depth of insertion meets the requirements, and guarantees the reliability of measurement data;
2) outer round surface of described nozzle 4 is located with the upper V-shaped groove 13 of described locating piece 1, described nozzle 4 is put into described upper V-shaped groove 13, and by two clamping screws 3, described nozzle 4 is fixed on described locating piece 1 with described pressing plate 2, locking force is wanted suitably, is advisable to ensure that this nozzle 4 can rotate around its axis;
3) by after universal tool-measuring microscope and connecting computer energize, open and enter relevant software systems;
4) with the baffle plate alignment of micrometer lens by universal tool-measuring microscope, straightness error≤0.001mm is reached;
5) with magnetic block, the nozzle 4 of clamping on locating piece 1 is adsorbed on the baffle plate of universal tool-measuring microscope;
6) adjust the focal length of micrometer lens, find the optimum position of a standard core rods head, afterbody focal length in the horizontal direction;
7) by the bolt-locking on universal tool-measuring microscope vertical direction column, by rotating " rice " wordline of micrometer lens, in micrometer eyepiece imaging system, carry out matching with the angle of actual standard core rods, standard core rods angular error in the horizontal direction (being the angular error of spray orifice) can be measured easily;
8) by the rotation of nozzle 4 along direction of axis line, the optimum position of adjustment standard core rods each horizontal direction focal length, namely obtains the angular error of Nozzle cone angle after " rice " wordline of same micrometer lens carries out matching.
To measure the nozzle of diameter 18-50mm, only locating piece 1 need be turned over turnback, lower V-shaped groove 14 upwards, then repeats above-mentioned steps.
The protection domain of application claims is not limited only to above-described embodiment; to those skilled in the art; without departing from the principles and spirit of the present invention, done any amendment, equivalent replacement, apparent modification and improvement, all should belong to protection scope of the present invention.
Claims (5)
1., for the positioning tool that diesel nozzeles is measured, it is characterized in that: described positioning tool comprises locating piece and pressing plate;
Described locating piece is a cube component, and it has the upper plane and lower plane that are parallel to each other, and on this, plane is provided with one for locating the upper V-shaped groove of the outer round surface of tested nozzle, and the both sides of this locating piece are provided with two through holes symmetrically;
Described pressing plate is tabular component, its lower plane is provided with an inverted v-shaped groove relative with the upper V-shaped groove of described locating piece, the both sides of this pressing plate are provided with two mounting grooves symmetrically, and two clamping screws are each passed through two through holes of this two mounting groove and described locating piece and are fixed on described locating piece by tested nozzle clamp by described pressing plate.
2. the positioning tool measured for diesel nozzeles according to claim 1, is characterized in that: the lower plane of described locating piece is provided with one for locating the lower V-shaped groove of the outer round surface of tested nozzle.
3. the positioning tool measured for diesel nozzeles according to claim 2, it is characterized in that: the opening angle of the inverted v-shaped groove of the upper V-shaped groove of described locating piece, lower V-shaped groove and pressing plate is 90 ° or 120 °, symmetry≤0.005mm, the linearity≤0.01mm of V-shaped groove two groove face and flatness≤0.01mm.
4. the positioning tool measured for diesel nozzeles according to claim 1 and 2, is characterized in that: the upper plane of described locating piece and the flatness≤0.005mm of lower plane, the depth of parallelism≤0.005mm of plane and lower plane on this.
5. the method that the diesel nozzeles adopting positioning tool described in claim 1 to realize is measured, is characterized in that: the concrete steps of described method are as follows:
1) standard core rods of less than described Nozzle of Diesel Engines for specification 0.01-0.02mm is inserted in this spray orifice;
2) described nozzle is put into the upper V-shaped groove of described locating piece, the outer round surface of described nozzle is located with V-shaped groove on this, and be fixed on described locating piece on by two clamping screws by described nozzle with described pressing plate, locking force is advisable to ensure that this nozzle can rotate around its axis;
3) connect the power supply of universal tool-measuring microscope and computer and enter relevant software systems;
4) with the baffle plate of micrometer lens alignment universal tool-measuring microscope, straightness error≤0.001mm is reached;
5) with magnetic block, the nozzle of clamping on locating piece is adsorbed on the baffle plate of universal tool-measuring microscope;
6) adjust the focal length of micrometer lens, find the optimum position of standard core rods head, afterbody focal length in the horizontal direction;
7) by the bolt-locking in universal tool-measuring microscope vertical pillars, by rotating " rice " wordline of micrometer lens, in eyepiece imaging system, carrying out matching with the angle of the standard core rods of reality, measure standard core rods angular error in the horizontal direction;
8) by rotating described nozzle in the axial direction, the optimum position of each horizontal direction focal length of adjustment standard core rods, obtains the angular error of Nozzle cone angle by " rice " wordline of micrometer lens after carrying out matching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410669301.3A CN104457618B (en) | 2014-11-21 | 2014-11-21 | A kind of positioning tool measured for diesel nozzeles and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410669301.3A CN104457618B (en) | 2014-11-21 | 2014-11-21 | A kind of positioning tool measured for diesel nozzeles and method |
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| CN104457618A true CN104457618A (en) | 2015-03-25 |
| CN104457618B CN104457618B (en) | 2017-07-28 |
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Cited By (4)
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| CN110470233A (en) * | 2019-08-02 | 2019-11-19 | 中船动力有限公司 | Diesel injector spray-hole Pore Diameter Detection tooling and detection method |
| CN110567401A (en) * | 2019-10-09 | 2019-12-13 | 无锡威孚马山油泵油嘴有限公司 | Injection nozzle orifice projection detection tool |
| CN112747651A (en) * | 2019-10-29 | 2021-05-04 | 沪东重机有限公司 | Method for measuring angle of nozzle spray hole of marine diesel injector |
| CN114413767A (en) * | 2022-01-24 | 2022-04-29 | 中国工程物理研究院机械制造工艺研究所 | Laser transmission precision rotary positioning adjusting device |
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| CN110470233A (en) * | 2019-08-02 | 2019-11-19 | 中船动力有限公司 | Diesel injector spray-hole Pore Diameter Detection tooling and detection method |
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| CN112747651A (en) * | 2019-10-29 | 2021-05-04 | 沪东重机有限公司 | Method for measuring angle of nozzle spray hole of marine diesel injector |
| CN114413767A (en) * | 2022-01-24 | 2022-04-29 | 中国工程物理研究院机械制造工艺研究所 | Laser transmission precision rotary positioning adjusting device |
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| CN104457618B (en) | 2017-07-28 |
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