CN100395511C - Cycloidal engine oil pump inner and outer rotor measuring method - Google Patents
Cycloidal engine oil pump inner and outer rotor measuring method Download PDFInfo
- Publication number
- CN100395511C CN100395511C CNB031254144A CN03125414A CN100395511C CN 100395511 C CN100395511 C CN 100395511C CN B031254144 A CNB031254144 A CN B031254144A CN 03125414 A CN03125414 A CN 03125414A CN 100395511 C CN100395511 C CN 100395511C
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- rotor
- outer rotor
- oil pump
- centering
- lubricating oil
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Abstract
The present invention relates to a measuring method for an inner rotor and an outer rotor of a cycloid type lubricating oil pump, which belongs to the field of mechanical detection. The present invention measures diameter parameters of an inscribed circle and a circumscribed circle of the inner rotor and diameter parameters of an inscribed circle and a circumscribed circle of the outer rotor by a special measuring apparatus. Measuring results of qualified products, unqualified products and reprocessed products are judged by measurement data, the qualified products are divided into three groups according to the dimension, and are numbered, and then, the inner rotor and the outer rotor are matched according to the measured groups. The measuring method for an inner rotor and an outer rotor of a cycloid type lubricating oil pump solves the problem of incapable measurement in production, and provides optimal transmission pair elements for assembling assemblies. The present invention obtains ideal fit clearance in the working process, and enhances the quality of assemblies.
Description
Technical field:
The invention belongs to the mechanical detection field, relate to the inside and outside rotor measurement method of a kind of gerotor type lubricating oil pump, be used for the detection of lubricating oil pump internal rotor major parameter-two group diameter parameters, in the middle of the assembly assembling, play a part the grouping pairing.
Background technology:
The gerotor type inside and outside rotor in oil pump is that the main transmission element of engine oil pump assembly plays a part to engine oil, and the appearance curve of part is cycloid, and shape is strange, and complex structure can't be measured with conventional measuring method; Inside and outside rotor in oil pump is a powder smelting part simultaneously, real parts size precision not only can directly have influence on the quality and the serviceable life of assembly, also can have influence on other manufacturing procedure simultaneously, as batch mixing, compression moulding, sintering, shaping and mould design etc., as measuring with three coordinate measuring machine, one side expense costliness, its detection efficiency, environment for use, condition of work and maintaining all can not be satisfied the actual requirement of production earlier far away on the other hand.And owing to can't accurately measure, when assembly assembles, be prone to the situation of the excessive or interference of tolerance clearance, cause that assembly is of poor quality, qualification rate is low.
Summary of the invention:
The present invention is in order to solve the difficult problem that inner and outer rotors can't be measured in the middle of producing, the inside and outside rotor measurement method of a kind of gerotor type lubricating oil pump is proposed, described method is that the diameter parameters of outer rotor incircle and circumscribed circle or internal rotor inscribed circle and circumscribed diameter parameters are measured with the special measurement instrument, the data judging of measuring is gone out the measurement result of certified products, unacceptable product, reprocessed products, certified products are further divided into three groups by the size of size, and numbering; Last inner and outer rotors is assemblied in the engine oil pump assembly by the group of measuring after dividing into groups.
The inside and outside rotor measurement method of this gerotor type lubricating oil pump, solved the difficult problem that to measure in the middle of producing, match out best transmission element for the assembly assembling simultaneously, can obtain more satisfactory tolerance clearance in the course of the work, this plays crucial effect to the quality that improves assembly.
Description of drawings:
Fig. 1 is the outer-rotor structure synoptic diagram;
Fig. 2 is the inner rotor core synoptic diagram;
Fig. 3 is an outer rotor special measurement instrument structural representation of the present invention;
Fig. 4 is the floor plan of outer rotor special measurement instrument sensor;
Fig. 5 is an internal rotor special measurement instrument structural representation of the present invention;
Fig. 6 is the floor plan of internal rotor special measurement instrument sensor.
Embodiment:
Method of the present invention is by the designing requirement measuring position to the diameter parameters of outer rotor incircle and circumscribed circle or internal rotor inscribed circle and circumscribed diameter parameters, measure by the special measurement instrument, the data judging of measuring is gone out the measurement result of certified products, unacceptable product, reprocessed products, certified products are further divided into three groups by the size of size, and numbering; Last inner and outer rotors mates pairing by the group of measuring after dividing into groups.Be specifically described below in conjunction with the inside and outside rotor of EQ1141 lubricating oil pump:
As shown in Figure 1, the measured diameter parameters incircle φ 42 of outer rotor
+ 0.774 + 0.812With circumscribed circle φ 62
+ 0.585 + 0.623By designing requirement A
1-A
5, B
1-B
5Be the measuring position.By technological requirement the data judging of measuring is gone out the measurement result of certified products, unacceptable product, reprocessed products, wherein certified products are divided into three groups again by the size of size, i.e. I, II, III, and outer rotor is measured grouping and is required to see Table 1;
As shown in Figure 2, the measured diameter parameters inscribed circle φ 32 of lubricating oil pump internal rotor
+ 0.779 + 0.830With circumcircle φ 52
+ 0.591 + 0.642By designing requirement A
1-A
8Be the measuring position.By technological requirement the data judging of measuring is gone out the measurement result of certified products, unacceptable product, reprocessed products, wherein certified products are divided into three groups by the size of size, i.e. I, II, III, and internal rotor is measured grouping and is required to see Table 2;
Table 1EQ1141 lubricating oil pump outer rotor grouping standard
Table 2EQ1141 lubricating oil pump internal rotor grouping standard
| Inscribed circle group number diameter circumcircle diameter | ＜φ32.779 | φ32 +0.779 +0.800 | φ32 +0.801 +0.815 | φ32 +0.816 +0.830 | ＞φ32.830 |
| ＜φ52.591 | Waste product | Waste product | Waste product | Waste product | Waste product |
| φ52 +0.591 +0.612 | Waste product | I | I | I | Reprocessed products |
| φ52 +0.613 +0.627 | Waste product | II | II | II | Reprocessed products |
| φ52 +0.628 +0.642 | Waste product | III | III | III | Reprocessed products |
| ＞φ52.642 | Waste product | Reprocessed products | Reprocessed products | Reprocessed products | Reprocessed products |
Part is after measuring grouping, the management of not only being convenient to produce is also debug quality for the assembly of postorder simultaneously provides reliable assurance, when the engine oil pump assembly assembling of postorder, inner and outer rotors mates pairing by the group of measuring after dividing into groups, make this transmission after the assembly assembling, can obtain more satisfactory tolerance clearance, so both solve hair fastener phenomenon or the excesssive gap fluid string chamber of inner and outer rotors in transmission process, guaranteed the normal fuel injection pressure of oil pump.
As shown in Figure 3, outer rotor special measurement instrument comprises support 8, elastic centering anchor clamps 4, centering guiding mechanism 5, electrical control measuring mechanism 2, operating mechanism 1, elastic centering anchor clamps 4 are made of resilient sleeve 9 and column 10, centering guiding mechanism 5 is the three-jaw alignment mechanism, be pressed on column 10 tops by bolt 3, operating mechanism 1 is installed in support 8 bottoms, connects with column 10 lower ends, handles the clamping of 4 pairs of parts of elastic centering anchor clamps; Electrical control measuring mechanism 2 comprises controller 12, display 13 and displacement transducer 7,11, sensor 7,11 and controller 12 are by being electrically connected, the floor plan of sensor as shown in Figure 4, sensor 7 is measured along the diametric(al) of circumscribed circle, has 5 side heads to contact with the backlash root of outer rotor; Sensor 11 is measured along the diametric(al) of incircle, has 5 side heads to contact with the tooth top of outer rotor.During measurement, three pawls of alignment mechanism 5 are against the backlash of outer rotor 6, and the claw of resilient sleeve 9 is pressed on the tooth top of outer rotor 6, and are corresponding with three pawls of alignment mechanism 5, overcome unbalance stress, guarantee stress equalization.
EQ1141 lubricating oil pump outer rotor need check that two groups of diameter parameters are φ 42
+ 0.774 + 0.812, φ 62
+ 0.585 + 0.623, the concrete steps of detection are: A, at first measured piece is eliminated the measuring error that causes thus by elastic centering clamp system Reasonable Orientation; B, the mechanism by centering guiding, make the desirable measuring position of part very accurately coincide with the measuring position of instrument, thereby eliminate: because two groups of diameter parameters of part are all at same measurement plane because the improper caused error of centering, there is 36 ° phase differential inscribed circle and circumscribed measuring position, and every group of diameter parameters has 72 ° phase differential, therefore when measuring, phase place centering requirement accurately to be arranged, i.e. the gauge head of sensor true value that records inscribed circle and circumcircle diameter parameters surely when measuring; C, the measuring mechanism that has a displacement transducer are measured, and two groups of shared 10 displacement transducers of diameter parameters are seen shown in Figure 4; D, parameter is detected, divides into groups, the measured value that shows on the display: A
1, A
2, A
3, A
4, A
5Displacement transducer on 5 is to be used for detecting diameter parameters φ 42.8
-0.026 + 0.012, B
1, B
2, B
3, B
4, B
5Displacement transducer on 5 is to be used for detecting diameter parameters φ 62.6
-0.026 + 0.023, judge A=2/5 (A
1+ A
2+ A
3+ A
4+ A
5) whether at φ 42.8
-0.026 + 0.012In the scope, another group B=2/5 (B
1+ B
2+ B
3+ B
4+ B
5) whether at φ 62.6
-0.026 + 0.023In the scope; E, Measurement and Data Processing: if having one group in two groups of data of A, B for just overproof this part is a waste product, at this moment, demonstrate maximum positive excess difference on the display, waste product signal lamp (redness) is shinny, and grouping does not show; If have one group for negative overproof in A, the B group data, then this part is reprocessed products, at this moment, demonstrates maximum negative overproof value on the display, and reprocessed products signal lamp (yellow) is shinny, and grouping does not show; If A, B group data are all qualified, at this moment, certified products signal lamp (green) is shinny, and grouping shows its group by table one grouping standard.
As shown in Figure 5, gerotor type internal rotor special measurement instrument comprises support 28, elastic centering anchor clamps 24, centering guiding mechanism 25, electrical control measuring mechanism 22, operating mechanism 21, elastic centering anchor clamps 24 are made of resilient sleeve 29 and column 20, centering guiding mechanism 25 is for having 90 ° of V-type alignment mechanisms that slide and shrink, be fixed on described bracket end face, operating mechanism 21 is installed in support 28 bottoms, connects with column 20 lower ends, handles the clamping of 24 pairs of parts of elastic centering anchor clamps; Electrical control measuring mechanism 22 comprises controller 19, display 23 and displacement transducer 27,18, sensor 27,18 and controller 19 are by being electrically connected, the sensor side head is arranged round internal rotor along circumference, have 8, the floor plan of sensor as shown in Figure 6, sensor 27 is measured along the diametric(al) of circumscribed circle, has 4 side heads to contact with the tooth top root of internal rotor; Sensor 18 is measured along the diametric(al) of incircle, has 4 side heads to contact with the tooth root of internal rotor.During measurement, elastic centering clamp system 24 passes the internal rotor center pit and clamps, and is against the teeth of internal rotor 26, centering measuring position by the V-type alignment mechanism 25 that is fixed on bracket end face.
Now two groups of diameter parameters that need detect with EQ1141 lubricating oil pump internal rotor are φ 32
+ 0.779 + 0.830, φ 52
+ 0.591 + 0.642, the concrete steps of detection are: A, at first measured piece is eliminated the measuring error that causes thus by elastic centering clamp system Reasonable Orientation;
B, make the desirable measuring position of part very accurately coincide with the measuring position of instrument by having 90 ° of V-type alignment mechanisms that slide to shrink, thereby eliminate: because two groups of diameter parameters of part are all at same measurement plane because the improper caused error of centering, there is 45 ° phase differential inscribed circle and circumscribed measuring position, and every group of diameter parameters has 90 ° phase differential, therefore when measuring, phase place centering requirement accurately to be arranged, i.e. the gauge head of sensor true value that records inscribed circle and circumcircle diameter parameters surely when measuring; C, the measuring mechanism that has a displacement transducer are measured, and two groups of diameter parameters shared 10 each displacement transducers are seen shown in Figure 4; D, parameter is detected, divides into groups, the measured value that shows on the display: A
1, A
2, A
3, A
4Displacement transducer on 4 is to be used for detecting diameter parameters φ 52
+ 0.591 + 0.642, A
5, A
6, A
7, A
8Displacement transducer on 4 is to be used for detecting diameter parameters φ 32
+ 0.779 + 0.830, judge A
1+ A
2And A
3+ A
4Whether at φ 52.5
+ 0.091 + 0.142In the scope, another organizes A
5+ A
6And A
7+ A
8Whether at φ 33
-0.221 -0.170In the scope; E, Measurement and Data Processing: if in four groups of data one group negative overproof (or more than one group) is arranged, then this part is a waste product, demonstrates maximum negative overproof value on the display, and waste product signal lamp (redness) is shinny, and grouping does not show; If one group just overproof (or more than one group) is arranged in four groups of data, then this part is reprocessed products, demonstrates maximum positive excess difference on the display, and reprocessed products signal lamp (yellow) is shinny, and grouping does not show; If four groups of data are all qualified, then on display, demonstrate A respectively
1+ A
2And A
3+ A
4One group of maximum data in two groups of data, A
5+ A
6And A
7+ A
8One group of maximum data in two groups of data, at this moment, certified products signal lamp (green) is shinny, and grouping shows its group by table one grouping standard.
Internal rotor and outer rotor after the above-mentioned detection grouping are assemblied in the engine oil pump assembly by corresponding group.The inner and outer rotors tolerance clearance of assembling rear pump or output pump assembly is 0.01～0.031mm.
Detect part tolerance 0.031mm, the system accuracy≤0.005mm of instrument.System accuracy mainly guarantees by two aspects, be the mechanical part that detects main frame on the one hand, the strong electric part of antijamming capability on the other hand, mechanical part centering, location, clamping, measurement in design is reasonable, compact conformation, most neck parts have adopted combination and bedding-in processing on making, and electric part has used the amplifier of STD industrial computer, high-precision inductance sensor and signal stabilization, therefore can satisfy measurement requirement.Accuracy of detection:
When detecting part, after part was clamped by the centering location, measured data just can show at once by display, and its visual result is clear, and is easy to operate simple, 1/0.5 minute.Detection efficiency;
After lubricating oil pump outer rotor detector was succeeded in developing, through debugging, check and accept, produce the application examination of actual use three phases, every economic and technical norms had all reached and have satisfied and design request for utilization, as the duplicate measurements error; Continuously up to a hundred times measurement duplicate measurements errors≤0.005mm. continuous working eight hours, zero-drift error≤1.5 μ m.In use antijamming capability is strong, and measured result is reliable and stable, and the production in enormous quantities that is suitable for factory is used.
Claims (4)
1. inside and outside rotor measurement method of gerotor type lubricating oil pump, described method is that the diameter parameters of outer rotor incircle and circumscribed circle or internal rotor inscribed circle and circumscribed diameter parameters are measured with the special measurement instrument, the data judging of measuring is gone out the measurement result of certified products, unacceptable product, reprocessed products, certified products are further divided into three groups by the size of size, and numbering; Last inner and outer rotors mates pairing by the group of measuring after dividing into groups; Described outer rotor special measurement instrument comprises support, elastic centering anchor clamps, centering guiding mechanism, electrical control measuring mechanism, operating mechanism, described centering guiding mechanism is pressed on the described elastic centering anchor clamps by bolt, described elastic centering anchor clamps are made of resilient sleeve and column, described centering guiding mechanism is the three-jaw alignment mechanism, be pressed on described column top by bolt, described operating mechanism is installed in the support bottom, connects with described column lower end; Described electrical control measuring mechanism comprises controller, display and displacement transducer, and described sensor and controller are by being electrically connected; Described internal rotor special measurement instrument comprises support, elastic centering anchor clamps, centering guiding mechanism, electrical control measuring mechanism, operating mechanism, described centering guiding mechanism is pressed on the described elastic centering anchor clamps by bolt, described elastic centering anchor clamps are made of resilient sleeve and column, described centering guiding mechanism is to have 90 ° of V-type alignment mechanisms that slide and shrink, be fixed on described bracket end face, described operating mechanism is installed in the support bottom, connects with described column lower end; Described electrical control measuring mechanism comprises controller, display and displacement transducer, and described sensor and controller are by being electrically connected.
2. the inside and outside rotor measurement method of gerotor type lubricating oil pump as claimed in claim 1, it is characterized in that: the sensor on the described outer rotor special measurement instrument has 10 side heads, described side 5 contacts with the backlash root of described outer rotor, and 5 contact with the tooth top of described outer rotor.
3. the inside and outside rotor measurement method of gerotor type lubricating oil pump as claimed in claim 1, it is characterized in that: during measurement, three pawls of the alignment mechanism on the described outer rotor special measurement instrument are against the backlash of described outer rotor, the claw of described resilient sleeve is pressed on the tooth top of described outer rotor, corresponding with three pawls of described alignment mechanism
4. the inside and outside rotor measurement method of gerotor type lubricating oil pump as claimed in claim 1, it is characterized in that: the sensor on the described internal rotor special measurement instrument has 8 side heads, described side 4 contacts with the tooth top root of described internal rotor, and 4 contact with the tooth root of described internal rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031254144A CN100395511C (en) | 2003-09-11 | 2003-09-11 | Cycloidal engine oil pump inner and outer rotor measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031254144A CN100395511C (en) | 2003-09-11 | 2003-09-11 | Cycloidal engine oil pump inner and outer rotor measuring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1523319A CN1523319A (en) | 2004-08-25 |
| CN100395511C true CN100395511C (en) | 2008-06-18 |
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ID=34285884
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031254144A Expired - Lifetime CN100395511C (en) | 2003-09-11 | 2003-09-11 | Cycloidal engine oil pump inner and outer rotor measuring method |
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| Country | Link |
|---|---|
| CN (1) | CN100395511C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102974950B (en) * | 2012-11-23 | 2015-03-18 | 中国南方航空工业(集团)有限公司 | Grouping method for swirler parts and group matching method for swirler assemblies |
| CN104165560B (en) * | 2014-05-13 | 2017-04-12 | 浙江海洋学院 | Machine for checking and accepting motor rotor of electric traffic vehicle |
| CN106442625B (en) * | 2016-09-29 | 2021-05-11 | 上海热像科技股份有限公司 | Infrared thermal imaging technology-based rear windshield heating wire detection system and method |
| CN113916178A (en) * | 2021-09-18 | 2022-01-11 | 中国航发哈尔滨东安发动机有限公司 | Rotor detection optimization method based on three-coordinate measuring platform |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5711083A (en) * | 1995-09-11 | 1998-01-27 | Bidwell Corporation | Gage set for measuring inside and outside diameters of ring-shaped parts |
| CN1178899A (en) * | 1996-10-03 | 1998-04-15 | 东南大学 | General large diameter measuring gauge and its measuring method |
-
2003
- 2003-09-11 CN CNB031254144A patent/CN100395511C/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5711083A (en) * | 1995-09-11 | 1998-01-27 | Bidwell Corporation | Gage set for measuring inside and outside diameters of ring-shaped parts |
| CN1178899A (en) * | 1996-10-03 | 1998-04-15 | 东南大学 | General large diameter measuring gauge and its measuring method |
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| Publication number | Publication date |
|---|---|
| CN1523319A (en) | 2004-08-25 |
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Granted publication date: 20080618 |