CN110160424A - A kind of connecting rob bushing compactness detecting tool and detection method - Google Patents
A kind of connecting rob bushing compactness detecting tool and detection method Download PDFInfo
- Publication number
- CN110160424A CN110160424A CN201910517852.0A CN201910517852A CN110160424A CN 110160424 A CN110160424 A CN 110160424A CN 201910517852 A CN201910517852 A CN 201910517852A CN 110160424 A CN110160424 A CN 110160424A
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- Prior art keywords
- rob bushing
- connecting rob
- circularity
- compactness
- cylindricity
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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
- G01B5/0025—Measuring of vehicle parts
-
- 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
- G01B5/20—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures
- G01B5/201—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures for measuring roundness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automatic Assembly (AREA)
Abstract
The present invention relates to a kind of connecting rob bushing compactness detecting tools, including cylindrical tooling ontology, circumferentially arranged with the detection window of multiple arcs；It can guarantee connecting rob bushing and the higher cooperation precision of tooling ontology, and being capable of true form of the accurate response connecting rob bushing in small end of connecting rod.The invention further relates to a kind of connecting rob bushing compactness detection methods, and the tooling ontology that in connecting rob bushing pressing tool ontology, will be pressed into connecting rob bushing is first placed into monitor station, calibrate three coordinates or cylindricity instrument；Roundness measurement is carried out with connecting rob bushing outer surface of the detection probe to different height in detection window again, measure data fitting is obtained into the cylindricity of connecting rob bushing outer surface；Compactness is finally determined according to cylindricity, if cylindricity is qualification within the specified scope；What it can fast and accurately evaluate connecting rob bushing and small end of connecting rod is bonded rate, can be avoided that data fluctuations caused by manual operation are biggish to be happened.
Description
Technical field
The present invention relates to automobile engine crank link mechanisms, and in particular to a kind of connecting rob bushing compactness detecting tool and
Detection method.
Background technique
Connecting rod is the significant components of transmission force in crank link mechanism, and function is to change the linear reciprocating motion of piston
For the rotary motion of crankshaft, and the power that piston is born is passed into crankshaft.Connecting rod shown in Figure 1, with big end
2, connecting rod shank 3, small end of connecting rod 4 and connecting-rod bolts 5；Small end of connecting rod 4 is used to install piston pin, to connect piston.Usually even
There is in the hole of bar microcephaly 4 with certain magnitude of interference indentation the connecting rob bushing 6 of antifriction effect, it is small with connecting rod to reduce piston pin
Abrasion between first 4, and improve the service life of connecting rod.
Common connecting rob bushing, as shown in Fig. 2, being made of alloy-layer 61 and steel back layer 62.Under normal circumstances, connecting rob bushing
Steel back do not need to process, by roll-forming after the direct punching press of band；The precision of steel back is guaranteed by craft precision.Connecting rob bushing 6
It is pressed into after small end of connecting rod 4, needs to guarantee the compactness of its steel back Yu small end of connecting rod 4, i.e., (fitting rate refers to that connecting rod serves as a contrast to fitting rate
Steel is covered by the size of the contact area with small end of connecting rod inner hole).Fitting rate is higher, and the cooperation between connecting rob bushing and small end of connecting rod is got over
Securely.The lower engine operation connecting rob bushing that will lead to of fitting rate falls off from small end of connecting rod, and major accident occurs.Therefore,
The service life for being bonded rate and directly affecting connecting rod of connecting rob bushing and small end of connecting rod.
It is general that connecting rod is detected using " Lan Yinfa " in order to quickly detect the compactness of connecting rob bushing steel back and small end of connecting rod
The steel back of bushing；The colored blue ink paste i.e. in connecting rob bushing steel back, then the inscription rubbing on grid paper by connecting rob bushing, pass through calculating
Accounting of the blue marking on grid paper, simulates the qualification rate of connecting rob bushing compactness.Although this method is quickly, due to it
Manual operation factor is high, and data fluctuations are bigger, not can accurately reflect actual fitting situation.Therefore, it is necessary to find one both
The method of quick accurate detection connecting rob bushing compactness again.
Summary of the invention
The object of the present invention is to provide a kind of connecting rob bushing compactness detecting tools, can guarantee connecting rob bushing and tooling
The higher cooperation precision of ontology, and being capable of true form of the accurate response connecting rob bushing in small end of connecting rod.The present invention also provides
A kind of connecting rob bushing compactness detection method, can fast and accurately evaluate connecting rob bushing and small end of connecting rod is bonded rate,
And obtained compactness can really reflect the compactness of connecting rob bushing and small end of connecting rod, can be avoided manual operation causes
Data fluctuations it is biggish happen, can be improved the accuracy of detection.
A kind of connecting rob bushing compactness detecting tool of the present invention, including tooling ontology, it is characterised in that: the work
It is cylindrical to fill ontology, circumferentially arranged with the detection window of multiple arcs.
Further, the detection window is arranged in the position that height is different on tooling ontology.
Further, the lower end inner wall of the tooling ontology has the limited step being inwardly arranged.
Further, there are the first detection window and the second detection window on the tooling ontology.
A kind of connecting rob bushing compactness detection method of the present invention, which comprises the steps of:
The first step, first by connecting rob bushing pressing tool ontology, the tooling ontology that will be pressed into connecting rob bushing is placed into detection
Platform calibrates three coordinates or cylindricity instrument；
Second step will test probe and be deep into detection window, be justified in connecting rob bushing outer surface different height position
Degree measurement, obtains the cylindricity of connecting rob bushing outer surface for measure data fitting；
Third step determines the press fitting compactness of connecting rob bushing and small end of connecting rod according to cylindricity, if cylindricity is in regulation model
It is qualification in enclosing.
Further, by the first detection window taken on connecting rob bushing height be the outer circle of h1, the outer circle of h2, h3 it is outer
Circle streaks the connecting rob bushing outer surface that height is h1, h2, h3 with the detection probe on three coordinates or cylindricity instrument respectively, right
The first circularity P1, the second circularity P2, third circularity P3 should be recorded；It is h4 that height is taken on connecting rob bushing by the second detection window
Outer circle, the outer circle of h5, the outer circle of h6, streaked respectively with detection probe height be h4, h5, h6 connecting rob bushing outer surface, it is right
The 4th circularity P4, the 5th circularity P5, the 6th circularity P6 should be recorded；Finally by the first circularity P1 of record, the second circularity P2,
Three circularity P3, the 4th circularity P4, the 5th circularity P5, the 6th circularity P6 are fitted to obtain the cylindricity of connecting rob bushing outer surface.
The beneficial technical effect of the present invention:
Due to devising tooling ontology, connecting rob bushing and the higher cooperation precision of tooling ontology, and accurate response ensure that
True form of the connecting rob bushing in small end of connecting rod；Since tooling ontology is circumferentially arranged with the detection window of multiple arcs, energy
It is enough to carrying out roundness measurement after connecting rob bushing pressing tool ontology；Since the lower end inner wall of tooling ontology has limited step,
The compression distance of connecting rob bushing is limited, prevents connecting rob bushing from moving axially；Due to using above-mentioned detection method, quickly, accurately
Evaluated be bonded rate of the connecting rob bushing with small end of connecting rod, and obtained compactness really reflects connecting rob bushing and connecting rod
The compactness of microcephaly, avoids that data fluctuations caused by manual operation are biggish to be happened, and improves the accuracy of detection.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of connecting rod；
Fig. 2 is the structural schematic diagram of connecting rob bushing；
Fig. 3 is the structural schematic diagram of tooling ontology of the present invention；
Fig. 4 is the top view of Fig. 3；
Fig. 5 is the A-A cross-sectional view of Fig. 4.
In figure: 1- tooling ontology, 2- big end, 3- connecting rod shank, 4- small end of connecting rod, 5- connecting-rod bolts, 6- connecting rod lining
Set；
11- detection window, 12- limited step；
The first detection window of 111-, the second detection window of 112-.
Specific embodiment
It elaborates below in conjunction with drawings and examples to the present invention.
The a part of connecting rob bushing 6 as connecting rod, bears the gas pressure from top land together with connecting rod.Due to even
The inner hole of bar microcephaly 4 is positive round, and therefore, the cylindricity of 6 steel back of connecting rob bushing can effectively reflect that the indentation of connecting rob bushing 6 connects
Fitting rate after bar microcephaly 4.The cylindricity of 6 steel back of connecting rob bushing is smaller, indicates steel back closer to a positive round.That is,
Connecting rob bushing 6 is pressed into the area contacted after small end of connecting rod 4 can be bigger, i.e., fitting rate is better.Due to connecting rob bushing 6 once pressing
Into after small end of connecting rod 4, it is impossible to detect the compactness of connecting rob bushing 6 Yu small end of connecting rod 4, connect in order to which controls connecting rod bushing 6 is pressed into
Rolled connecting rob bushing need to be pressed into a special detecting tool by the compactness after bar microcephaly 4.
A kind of connecting rob bushing compactness detecting tool shown in Figure 3, including tooling ontology 1, it is characterised in that: described
Tooling ontology 1 is cylindrical, circumferentially arranged with the detection window 11 of multiple arcs.The inner hole and small end of connecting rod 4 of tooling ontology 1
Inner hole be process using identical technique, and the hole size of tooling ontology 1 and the hole size of small end of connecting rod 4 (are not pressed
Size before load bushing) unanimously, connecting rob bushing 6 will can be simulated in 6 pressing tool ontology 1 of connecting rob bushing is pressed into connecting rod
State in microcephaly 4.It can guarantee connecting rob bushing and the higher cooperation precision of tooling ontology, and being capable of accurate response connecting rob bushing
True form in small end of connecting rod.
The detection window 11 is arranged in the position that height is different on tooling ontology 1.Detection window 11 is used for connecting rob bushing 6
The roundness measurement of steel back.
The lower end inner wall of the tooling ontology 1 has the limited step 12 being inwardly arranged.Limited step 12 can limit
The compression distance of connecting rob bushing 6, once in connecting rob bushing pressing tool ontology 1, it will not occur axially or radially to be displaced.At this time
The state of connecting rob bushing is finally pressed into the state after small end of connecting rod.
There are two detection windows, including the first detection window 111 and the second detection window on tooling ontology 1 in the present embodiment
112.When detection window is three, four, five, that is, constitute other embodiment.
A kind of connecting rob bushing compactness detection method, which comprises the steps of: the first step first serves as a contrast connecting rod
It covers in pressing tool ontology 1, the tooling ontology 1 that will be pressed into connecting rob bushing is placed into monitor station, calibrates three coordinates or cylindricity
Instrument；Second step will test probe and be deep into detection window 11, carry out circularity survey in connecting rob bushing outer surface different height position
Amount, obtains the cylindricity of connecting rob bushing outer surface for measure data fitting；Third step determines connecting rob bushing and company according to cylindricity
The press fitting compactness of bar microcephaly, if cylindricity is qualification within the specified scope.Can fast and accurately assess connecting rob bushing with
The fitting rate of small end of connecting rod.The compactness that detection method in this way obtains can really reflect connecting rob bushing and connecting rod
The compactness of microcephaly, avoids that data fluctuations caused by manual operation are biggish to be happened, and improves the accuracy of detection.
It is outer circle, the outer circle of h2, the outer circle of h3 of h1 that height is taken on connecting rob bushing by the first detection window 111, is used
Detection probe on three coordinates or cylindricity instrument streaks the connecting rob bushing outer surface that height is h1, h2, h3, corresponding record respectively
First circularity P1, the second circularity P2, third circularity P3；It is h4's that height is taken on connecting rob bushing by the second detection window 112
Outer circle, the outer circle of h5, the outer circle of h6 streak the connecting rob bushing outer surface that height is h4, h5, h5 with detection probe respectively, corresponding
Record the 4th circularity P4, the 5th circularity P5, the 6th circularity P6；Finally by the first circularity P1 of record, the second circularity P2, third
Circularity P3, the 4th circularity P4, the 5th circularity P5, the 6th circularity P6 are fitted to obtain the cylindricity of connecting rob bushing outer surface.It will test
Probe is deep into the first detection window 111 and the second detection window 112 is detected.Detection probe streaks the steel of connecting rob bushing
Back, it can simulate the circularity of the connecting rob bushing steel back under the height.According to the circularity under the different height recorded, then can
Enough it is fitted to the cylinder angle value of connecting rob bushing steel back.The cylinder angle value at this time obtained can feed back connecting rob bushing out and connecting rod is small
The press fitting compactness of head.
Due to connecting rob bushing with certain force fit tooling ontology after, take out connecting rob bushing process be one destruction
Process, connecting rob bushing cannot use after taking out.Under normal circumstances, tooling ontology is used for equipment debugging and product initial survey, with true
The quality of this fixed batch products.Guarantee the class of opening daily, the connecting rob bushing of the middle class in a kindergarten, night shift detects qualification rate, that is, can guarantee this batch
Product qualification rate.
The invention has the characteristics that:
1, the cooperation precision of connecting rob bushing and tooling ontology is high, and energy accurate response connecting rob bushing is true in small end of connecting rod
Form, the compactness detected are more accurate；
2, detection method is quick, easy.
Claims (6)
1. a kind of connecting rob bushing compactness detecting tool, including tooling ontology (1), it is characterised in that: the tooling ontology (1) is in
Cylindrical shape, circumferentially arranged with the detection window (11) of multiple arcs.
2. connecting rob bushing compactness detecting tool according to claim 1, it is characterised in that: detection window (11) cloth
Set the position that height is different on tooling ontology (1).
3. connecting rob bushing compactness detecting tool according to claim 1 or 2, it is characterised in that: the tooling ontology (1)
Lower end inner wall there is the limited step (12) that is inwardly arranged.
4. connecting rob bushing compactness detecting tool according to claim 3, it is characterised in that: on the tooling ontology (1)
There are the first detection window (111) and the second detection window (112).
5. a kind of connecting rob bushing compactness detection method is examined using the connecting rob bushing compactness as described in claim 1-4 is any
Survey tooling, which comprises the steps of:
The tooling ontology (1) that in connecting rob bushing (6) pressing tool ontology (1), will be pressed into connecting rob bushing is first placed by the first step
Monitor station calibrates three coordinates or cylindricity instrument；
Second step will test probe and be deep into detection window (11), be justified in connecting rob bushing outer surface different height position
Degree measurement, obtains the cylindricity of connecting rob bushing outer surface for measure data fitting；
Third step determines the press fitting compactness of connecting rob bushing and small end of connecting rod according to cylindricity, if cylindricity is within the specified scope
It is as qualified.
6. connecting rob bushing compactness detection method according to claim 5, it is characterised in that: pass through the first detection window
(111) it is outer circle, the outer circle of h2, the outer circle of h3 of h1 that height is taken on connecting rob bushing, on three coordinates or cylindricity instrument
Detection probe streak respectively height be h1, h2, h3 connecting rob bushing outer surface, the first circularity of corresponding record P1, the second circularity P2,
Third circularity P3；By the second detection window (112) taken on connecting rob bushing height be the outer circle of h4, the outer circle of h5, h6 it is outer
Circle streaks the connecting rob bushing outer surface that height is h4, h5, h6, the 4th circularity P4 of corresponding record, the 5th circle with detection probe respectively
Spend P5, the 6th circularity P6；Finally by the first circularity P1 of record, the second circularity P2, third circularity P3, the 4th circularity P4,
Five circularity P5, the 6th circularity P6 are fitted to obtain the cylindricity of connecting rob bushing outer surface.
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| CN201910367628 | 2019-05-05 | ||
| CN2019103676288 | 2019-05-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113390327A (en) * | 2021-07-09 | 2021-09-14 | 云南西仪工业股份有限公司 | Method for testing assembling fitting degree of connecting rod bushing |
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