CN103063117A - Inspection device and inspection method for parallelism of connecting rod small end hole of engine crankshaft assembly - Google Patents
Inspection device and inspection method for parallelism of connecting rod small end hole of engine crankshaft assembly Download PDFInfo
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- CN103063117A CN103063117A CN2012105786295A CN201210578629A CN103063117A CN 103063117 A CN103063117 A CN 103063117A CN 2012105786295 A CN2012105786295 A CN 2012105786295A CN 201210578629 A CN201210578629 A CN 201210578629A CN 103063117 A CN103063117 A CN 103063117A
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- end hole
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Abstract
In order to resolve the problem that in the existing technology, after an engine crankshaft assembly is assembled, parallelism of a connecting rod small end hole is difficult to inspect, the invention provides an inspection device and inspection method for the parallelism of the connecting rod small end hole of the engine crankshaft assembly. In the inspection device for the parallelism of the connecting rod small end hole of the engine crankshaft assembly, V-shaped grooves are formed in the upper portions of two V-shaped supports and the two V-shaped supports are fixed on a baseplate parallelly, the space distance between the two V-shaped supports are the same with the space distance between two bearings of a crankshaft assembly, a groove is formed in a connecting rod support and the connecting rod support is fixed on the baseplate which is located right in the front of the V-shaped supports, the width of the groove is larger than the thickness of the connecting rod, and a dial indicator is fixed on one side of the front of the connecting rod support. The inspection device for the parallelism of the connecting rod small end hole of the engine crankshaft assembly is used for inspecting the parallelism of the connecting rod small end hole of the crankshaft assembly which is assembled, and has the advantages of being convenient to operate, accurate in result, good in repeatability, low in manufacturing cost, and suitable for being popularized.
Description
Technical field
The present invention relates to a kind of engine crankshaft assembly connecting rod small end hole Parallel testing technology, specially refer to a kind of engine crankshaft assembly connecting rod small end hole checking fixture for parallelism and detection method.
Background technology
The function of motorcycle engine crankshaft assembly is that the straight reciprocating motion with piston changes gyration into, output torque, and drive the control gears such as the external equipment that connects with it and valve actuating mechanism, ignition mechanism, speed adjusting gear.
Usually, motorcycle engine crankshaft assembly (being designated hereinafter simply as crank assemblby) comprises left crank, right crank, crank pin, needle bearing, connecting rod, left bearing, right bearing and time gear, left crank and right crank connect into bent axle by the mode that interference fit and employing with crank pin press-fit, connecting rod is fitted on the crank pin by needle bearing, left bearing, right bearing and time gear also are to be fixedly mounted on toggle-action lever section by the mode that press-fits, thus, consist of crank assemblby.In the assembling process of crank assemblby, usually first bearing, time gear are fitted in left and right toggle-action lever section, more left and right crank is fitted in respectively on the crank pin that has been pressed with needle roller gear and connecting rod, need through multiple bearing and press-fit.Although all adopt mould accurately to locate in the process locating and press-fit at every turn, cumulative errors causes probably that still each element size of crank assemblby and position are overproof.Microcephaly at connecting rod is provided with the through hole that is connected with engine piston, usually is referred to as connecting rod small end hole.Connect piston by connecting rod small end hole and change the straight reciprocating motion of piston into gyration, for the straight reciprocating motion that guarantees piston can effectively change gyration into, and do not produce any radial force or radial component, require the small end of connecting rod axially bored line with respect to toggle-action lever section axis keeping parallelism, namely the connecting rod small end hole depth of parallelism must reach requirement.Usually, the small end of connecting rod axially bored line is called the connecting rod small end hole depth of parallelism with respect to the parallel degree of toggle-action lever section axis.Although the dimensional accuracy to each parts in the manufacture process of each parts has higher requirement,, the multiple bearing in the crank assemblby assembling process and press-fiting, very difficult assurance does not produce size and the position is overproof.Yet after assembling was finished, the curved bar axis of the axis of connecting rod small end hole and crank became spatial relation, was difficult to it is detected.Obviously, prior art engine crankshaft assembly exists the problem that the connecting rod small end hole depth of parallelism is difficult to detect after assembling is finished.
Summary of the invention
The problem that is difficult to detect for overcome the connecting rod small end hole depth of parallelism that prior art engine crankshaft assembly exists after assembling is finished, the present invention proposes a kind of engine crankshaft assembly connecting rod small end hole checking fixture for parallelism and detection method.Engine crankshaft assembly connecting rod small end hole checking fixture for parallelism of the present invention, comprise base plate, V-arrangement support, link supports, test bar and clock gauge, the top of two V-arrangement supports is provided with V-shaped groove, and parallel being fixed on the base plate, and its spacing is identical with the spacing of two bearings of crank assemblby; The top of link supports is provided with rectangular recess and is fixed on the base plate in V-arrangement support dead ahead, and the width of its groove is wide than connecting rod thickness; Clock gauge is fixed on a side in link supports the place ahead, its probe height be sleeved in the connecting rod small end hole with test bar and place it on the link supports after the centre-height in microcephaly hole identical; The diameter of test bar and the diameter of connecting rod small end hole are complementary.
Further, the test bar length of engine crankshaft assembly connecting rod small end hole checking fixture for parallelism of the present invention is 50 to 120mm.
Engine crankshaft assembly connecting rod small end hole Parallel testing method of the present invention, crank assemblby small end of connecting rod axially bored line detects with respect to the parallel degree of toggle-action lever section axis after adopting engine crankshaft assembly connecting rod small end hole checking fixture for parallelism of the present invention that assembling is finished, and may further comprise the steps:
S1: test bar is sleeved in the connecting rod small end hole of the crank assemblby after assembling is finished, because the diameter of test bar and the diameter of connecting rod small end hole are complementary, can not produce after test bar is sleeved in the connecting rod small end hole and rock or shake, notice that identical length is reserved on the both sides in hole;
S2: the V-arrangement that crank assemblby is placed on cubing supports, attention is placed on the bearing on the crank curved bar in the V-shaped groove, because two V-arrangement supports parallel are fixed on the base plate and the spacing of two bearings of spacing and crank assemblby is identical, crank assemblby can not produce and rock or shake;
S3: the small end of connecting rod that will be set with test bar is placed in the groove on link supports top, and the test bar at two ends just is placed on the platform of groove both sides; At this moment, the clock gauge that is fixed on link supports the place ahead one side just in time can be measured a termination of test bar,
S4: turning crankshaft, make connecting rod move to ultimate range to the link supports direction, height and the identical clock gauge of the connecting rod small end hole centre-height probe on being placed on link supports can Measurement accuracy move to the reading of ultimate range to connecting rod, write down the clock gauge indicated value of this time detection;
S5: the upset crank assemblby also is in place, and makes another termination of test bar aim at clock gauge, again turning crankshaft, make connecting rod move to ultimate range to the link supports direction, at this moment, clock gauge will detect another indicated value number, write down the clock gauge indicated value of this time detection;
The secondary clock gauge indicated value that S6: comparison step S4 and S5 detect, the larger explanation small end of connecting rod of difference axially bored line is more not parallel with respect to toggle-action lever section axis, calculates and sets difference range by theory and can detect certified products or unacceptable product.
The useful technique effect of engine crankshaft assembly connecting rod small end hole checking fixture for parallelism of the present invention and detection method is that the connecting rod small end hole depth of parallelism of crank assemblby detects after can finishing assembling, have easy to operate, the result accurately and the characteristics of good reproducibility, and, cheap, the suitable popularization.
Description of drawings
Accompanying drawing 1 is parts and structural representation before the motorcycle engine crankshaft general assembly;
Accompanying drawing 2 for the motorcycle engine crankshaft general assembly finish after parts and structural representation;
Accompanying drawing 3 is the structural representation of engine crankshaft assembly connecting rod small end hole checking fixture for parallelism of the present invention;
The synoptic diagram of accompanying drawing 4 for adopting engine crankshaft assembly connecting rod small end hole checking fixture for parallelism of the present invention to detect.
Below in conjunction with drawings and the specific embodiments engine crankshaft assembly connecting rod small end hole checking fixture for parallelism of the present invention and detection method are described further.
Embodiment
Accompanying drawing 3 is the structural representation of engine crankshaft assembly connecting rod small end hole checking fixture for parallelism of the present invention, the synoptic diagram (in figure do not show needle bearing) of accompanying drawing 4 for adopting engine crankshaft assembly connecting rod small end hole checking fixture for parallelism of the present invention to detect, among the figure, 8 is base plate, 9 are the V-arrangement support, 10 is link supports, and 11 is clock gauge, and 12 is test bar.As seen from the figure, engine crankshaft assembly connecting rod small end hole checking fixture for parallelism of the present invention, comprise base plate 8, V-arrangement support 9, link supports 10, test bar 12 and clock gauge 11, the top of two V-arrangement supports 9 is provided with V-shaped groove, and parallel being fixed on the base plate 8, its spacing is identical with the spacing of two bearings of crank assemblby; The top of link supports 10 is provided with rectangular recess and is fixed on the base plate 8 that V-arrangement supports 9 dead aheads, and the width of its groove is wide than connecting rod thickness; Clock gauge 11 is fixed on a side in link supports 10 the place aheads, its probe height be sleeved in the connecting rod small end hole with test bar 12 and place it on the link supports 10 after the centre-height in microcephaly hole identical; The diameter of test bar 12 and the diameter of connecting rod small end hole are complementary.
Engine crankshaft assembly connecting rod small end hole Parallel testing method of the present invention, crank assemblby small end of connecting rod axially bored line detects with respect to the parallel degree of toggle-action lever section axis after adopting engine crankshaft assembly connecting rod small end hole checking fixture for parallelism of the present invention that assembling is finished, and may further comprise the steps:
S1: test bar is sleeved in the connecting rod small end hole of the crank assemblby after assembling is finished, because the diameter of test bar and the diameter of connecting rod small end hole are complementary, can not produce after test bar is sleeved in the connecting rod small end hole and rock or shake, notice that identical length is reserved on the both sides in hole;
S2: the V-arrangement that crank assemblby is placed on cubing supports, attention is placed on the bearing on the crank curved bar in the V-shaped groove, because two V-arrangement supports parallel are fixed on the base plate and the spacing of two bearings of spacing and crank assemblby is identical, crank assemblby can not produce and rock or shake;
S3: the small end of connecting rod that will be set with test bar is placed in the groove on link supports top, and the test bar at two ends just is placed on the platform of groove both sides; At this moment, the clock gauge that is fixed on link supports the place ahead one side just in time can be measured a termination of test bar,
S4: turning crankshaft, make connecting rod move to ultimate range to the link supports direction, height and the identical clock gauge of the connecting rod small end hole centre-height probe on being placed on link supports can Measurement accuracy move to the reading of ultimate range to connecting rod, write down the clock gauge indicated value of this time detection;
S5: the upset crank assemblby also is in place, and makes another termination of test bar aim at clock gauge, again turning crankshaft, make connecting rod move to ultimate range to the link supports direction, at this moment, clock gauge will detect another indicated value number, write down the clock gauge indicated value of this time detection;
The secondary clock gauge indicated value that S6: comparison step S4 and S5 detect, the larger explanation small end of connecting rod of difference axially bored line is more not parallel with respect to toggle-action lever section axis, calculates and sets difference range by theory and can detect certified products or unacceptable product.
Be not difficult to find out from above detecting step, the effect of test bar is actually the nonparallelism of having amplified connecting rod small end hole, so that testing result is more accurate, accordingly, the test bar length of engine crankshaft assembly connecting rod small end hole checking fixture for parallelism of the present invention is 50 to 120mm.Engine crankshaft assembly connecting rod small end hole checking fixture for parallelism of the present invention and detection method do not adopt high-grade, precision and advanced testing tool, and be easy to operate, the good reproducibility of testing result.
The useful technique effect of engine crankshaft assembly connecting rod small end hole checking fixture for parallelism of the present invention and detection method is that the connecting rod small end hole depth of parallelism of crank assemblby detects after can finishing assembling, have easy to operate, the result accurately and the characteristics of good reproducibility, and, cheap, the suitable popularization.
Claims (3)
1. engine crankshaft assembly connecting rod small end hole checking fixture for parallelism, it is characterized in that, this cubing comprises base plate, V-arrangement support, link supports, test bar and clock gauge, the top of two V-arrangement supports is provided with V-shaped groove, and parallel being fixed on the base plate, its spacing is identical with the spacing of two bearings of crank assemblby; The top of link supports is provided with rectangular recess and is fixed on the base plate in V-arrangement support dead ahead, and the width of its groove is wide than connecting rod thickness; Clock gauge is fixed on a side in link supports the place ahead, its probe height be sleeved in the connecting rod small end hole with test bar and place it on the link supports after the centre-height in microcephaly hole identical; The diameter of test bar and the diameter of connecting rod small end hole are complementary.
2. described engine crankshaft assembly connecting rod small end hole checking fixture for parallelism according to claim 1 is characterized in that, test bar length is 50 to 120mm.
3. engine crankshaft assembly connecting rod small end hole Parallel testing method, it is characterized in that, crank assemblby small end of connecting rod axially bored line detects with respect to the parallel degree of toggle-action lever section axis after adopting engine crankshaft assembly connecting rod small end hole checking fixture for parallelism of the present invention that assembling is finished, and may further comprise the steps:
S1: test bar is sleeved in the connecting rod small end hole of the crank assemblby after assembling is finished, because the diameter of test bar and the diameter of connecting rod small end hole are complementary, can not produce after test bar is sleeved in the connecting rod small end hole and rock or shake, notice that identical length is reserved on the both sides in hole;
S2: the V-arrangement that crank assemblby is placed on cubing supports, attention is placed on the bearing on the crank curved bar in the V-shaped groove, because two V-arrangement supports parallel are fixed on the base plate and the spacing of two bearings of spacing and crank assemblby is identical, crank assemblby can not produce and rock or shake;
S3: the small end of connecting rod that will be set with test bar is placed in the groove on link supports top, and the test bar at two ends just is placed on the platform of groove both sides; At this moment, the clock gauge that is fixed on link supports the place ahead one side just in time can be measured a termination of test bar,
S4: turning crankshaft, make connecting rod move to ultimate range to the link supports direction, height and the identical clock gauge of the connecting rod small end hole centre-height probe on being placed on link supports can Measurement accuracy move to the reading of ultimate range to connecting rod, write down the clock gauge indicated value of this time detection;
S5: the upset crank assemblby also is in place, and makes another termination of test bar aim at clock gauge, again turning crankshaft, make connecting rod move to ultimate range to the link supports direction, at this moment, clock gauge will detect another indicated value number, write down the clock gauge indicated value of this time detection;
The secondary clock gauge indicated value that S6: comparison step S4 and S5 detect, the larger explanation small end of connecting rod of difference axially bored line is more not parallel with respect to toggle-action lever section axis, calculates and sets difference range by theory and can detect certified products or unacceptable product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105786295A CN103063117A (en) | 2012-12-27 | 2012-12-27 | Inspection device and inspection method for parallelism of connecting rod small end hole of engine crankshaft assembly |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105786295A CN103063117A (en) | 2012-12-27 | 2012-12-27 | Inspection device and inspection method for parallelism of connecting rod small end hole of engine crankshaft assembly |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234435A (en) * | 2013-05-15 | 2013-08-07 | 重庆歇马机械曲轴有限公司 | Inspection tool for detecting parallelism of crank pinhole of engine |
| CN104457524A (en) * | 2014-12-15 | 2015-03-25 | 青岛德盛机械制造有限公司 | Detection device and method for bending resistance and torsion resistance of crankshaft connecting rod assembly |
| CN104990693A (en) * | 2015-06-11 | 2015-10-21 | 奇瑞汽车股份有限公司 | Connecting rod buckling point test apparatus and method of testing the connecting rod buckling point by using the apparatus |
| CN105135999A (en) * | 2015-04-25 | 2015-12-09 | 郑州新交通汽车板簧有限公司 | Device and method for detecting steel plate spring eye aperture verticality/parallelism |
| CN106123750A (en) * | 2016-06-16 | 2016-11-16 | 沈阳飞机工业（集团）有限公司 | Measured hole depth of parallelism measured material and measuring method |
| CN107042387A (en) * | 2017-04-12 | 2017-08-15 | 大连辽南船厂 | Diesel engine connecting bar restorative procedure |
| CN107894202A (en) * | 2017-12-26 | 2018-04-10 | 瓦房店轴承集团有限责任公司 | Wind power bearing mounting hole accuracy detecting device and method |
| CN109443753A (en) * | 2018-11-22 | 2019-03-08 | 福建永强力加动力设备有限公司 | A kind of crankshaft toothed wheel check device |
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| CN203100660U (en) * | 2012-12-27 | 2013-07-31 | 重庆歇马机械曲轴有限公司 | Inspection device for parallelism of connecting rod small end hole of engine crankshaft assembly |
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Patent Citations (4)
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| ES2214091A1 (en) * | 2002-03-11 | 2004-09-01 | Talleres De Precision Gai, S.L. | Control probe inner cone for verifying internal taper, has outer sleeve embracing cylindrical portion of body that is connected to trigger with arm, and spring connecting lid housed inside rod with corresponding portion of probe |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234435A (en) * | 2013-05-15 | 2013-08-07 | 重庆歇马机械曲轴有限公司 | Inspection tool for detecting parallelism of crank pinhole of engine |
| CN104457524A (en) * | 2014-12-15 | 2015-03-25 | 青岛德盛机械制造有限公司 | Detection device and method for bending resistance and torsion resistance of crankshaft connecting rod assembly |
| CN105135999A (en) * | 2015-04-25 | 2015-12-09 | 郑州新交通汽车板簧有限公司 | Device and method for detecting steel plate spring eye aperture verticality/parallelism |
| CN104990693A (en) * | 2015-06-11 | 2015-10-21 | 奇瑞汽车股份有限公司 | Connecting rod buckling point test apparatus and method of testing the connecting rod buckling point by using the apparatus |
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| CN106123750A (en) * | 2016-06-16 | 2016-11-16 | 沈阳飞机工业（集团）有限公司 | Measured hole depth of parallelism measured material and measuring method |
| CN106123750B (en) * | 2016-06-16 | 2019-02-19 | 沈阳飞机工业（集团）有限公司 | Measured hole depth of parallelism measured material and measurement method |
| CN107042387A (en) * | 2017-04-12 | 2017-08-15 | 大连辽南船厂 | Diesel engine connecting bar restorative procedure |
| CN107894202A (en) * | 2017-12-26 | 2018-04-10 | 瓦房店轴承集团有限责任公司 | Wind power bearing mounting hole accuracy detecting device and method |
| CN109443753A (en) * | 2018-11-22 | 2019-03-08 | 福建永强力加动力设备有限公司 | A kind of crankshaft toothed wheel check device |
| CN109443753B (en) * | 2018-11-22 | 2024-03-26 | 福建永强力加动力设备有限公司 | Crankshaft gear inspection device |
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Application publication date: 20130424 |