CN1038528C - Method and device for comprehensively measuring position error of piston pin hole - Google Patents
Method and device for comprehensively measuring position error of piston pin hole Download PDFInfo
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- CN1038528C CN1038528C CN 91108617 CN91108617A CN1038528C CN 1038528 C CN1038528 C CN 1038528C CN 91108617 CN91108617 CN 91108617 CN 91108617 A CN91108617 A CN 91108617A CN 1038528 C CN1038528 C CN 1038528C
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- piston
- pin hole
- error
- piston pin
- measuring
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 230000006835 compression Effects 0.000 claims abstract description 12
- 238000007906 compression Methods 0.000 claims abstract description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 2
- 238000003786 synthesis reaction Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000004164 analytical calibration Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000013341 scale-up Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention provides a method and a device for simultaneously measuring the verticality error of a piston pin hole center line to a piston skirt part and the compression height error to the top surface of a piston by using the same set of positioning and measuring reference. The device consists of three parts, namely a positioning system (11, 12, 14, 15, 16, 18, 19, 20, 21), a measuring system (13, 15, 17, 22) and a calibration body 24. The device has the characteristics of multiple purposes, high precision, reliable work, rapid measurement and the like. It is suitable for use as finished product inspection and technological inspection gauge of piston.
Description
Piston pin hole site error comprehensive measuring method.
The invention belongs to the length metering method in the geometric sense metering field.
The piston pin hole site error generally comprises: the error of perpendicularity (hereinafter to be referred as the error of perpendicularity) of piston pin hole center line and piston skirt center line, the piston pin hole center line is to the compression height error (hereinafter to be referred as the compression height error) of piston-top surface, the biasing degree error of piston pin hole center line, error of piston pin hole center line and piston skirt xsect transverse and minor axis location or the like.Wherein, the error of perpendicularity and compression height error are usually by as examining error project.
Before the present invention with the most approaching prior art of the present invention in, measuring vertical degree sum of errors compression height error is carried out (" piston, piston ring, cylinder jacket, bearing shell experience exchangement " respectively in the different measuring system, P52-53,1987.3 Wuhan piston of automobile, piston ring, bearing shell research institute edit and publish; " internal combustion engine part ", P1-P9,1986.4, Shijiazhuang internal combustion engine base member research institute publishes).
The shortcoming of above-mentioned prior art is: the process of measurement complexity, measure chain length, measuring accuracy is low, efficient is not high.
In order to overcome above-mentioned shortcoming, the objective of the invention is to the simplified measurement process, shorten chain tape, improve measuring accuracy and efficiency of measurement.
Detailed content of the present invention is as shown in Figure 1: make positioning reference with piston skirt and end face, survey rod 1 and penetrate in the pin-and-hole of piston 2, form the Simulation Center line of piston pin hole, and make measuring basis with piston pin hole.Use adjustment body (or claiming etalon or master gauge) to determine the theoretical position 00 of piston pin hole center line, both position shown in the double dot dash line among Fig. 1 in advance.Again with two error pick-ups measure simultaneously respectively the physical location 0 ' 0 of piston pin hole center line ', both positions shown in the dot-and-dash line among Fig. 1.
The error of perpendicularity and compression height error be by with aforementioned same group of location and the piston pin hole center line theoretical position that obtained of measuring basis 00 and physical location 0 ' 0 ' departure Δ A and Δ B, through the method acquisition of weighted sum.
Provide according to error geometric relationship shown in Figure 1:
The error of perpendicularity=K (Δ A-Δ B) (1)
Compression height error=K
1Δ A+K
2Δ B (2)
(1) scale-up factor K=100/1 in the formula
(2) scale-up factor K in the formula
1=(1+1 '/1)/2
K
2＝(1-1′/1)/2
1 is the distance of two error pick-up centreline spaces, 1 ' for the location fulcrum to 2 times of piston skirt distance between center line, 1,1 ' unit be millimeter.
Good effect of the present invention is: a tractor serves several purposes, simplified measuring process, and shortened chain tape, improved measuring accuracy and efficiency of measurement.
Fig. 1 is a measuring principle synoptic diagram of the present invention.
Most preferred embodiment: adopt the double testing head inductance amesdial to make error pick-up.The steel material that the adjustment body adopts dimensionally stable, wear-resisting, structure and manufacturing accuracy to satisfy the piston error of perpendicularity and compression height error magnitude delivery request is made.
Piston pin hole site error comprehensive measurement device
The invention belongs to youngster and how to measure length gauge device in the metering field.
Normally on several units, finish respectively in measurement piston pin hole site error before the present invention, wherein approaching with the present invention prior art (device) is (" piston, piston ring, cylinder jacket, bearing shell experience exchangement " as shown in Figure 2, P52-P53,1987.3 Wuhan piston of automobile, piston ring, bearing shell research institute edit and publish).It by auxiliary locator 4, survey rod 5, auxiliary stop 6, ＂ V ＂ type locating piece 7, micrometer gauge 8, gage beam 9, bearing pin 3 is formed.10 is tested piston.
The shortcoming of this device is: can only finish the measurement of single parameter, and efficiency of measurement is not high, precision is low.
In order to overcome above-mentioned shortcoming, the objective of the invention is to the simplified measurement program, improve measuring speed and measuring accuracy, can be on a covering device installing and locating once, finish the measurement of multiparameter.
Detailed content of the present invention such as Fig. 3 .1, Fig. 3 .2, shown in Fig. 3 .3: this device is made up of positioning system (11,12,14,15,16,18,19,20,21), measuring system (13,15,17,22) and adjustment 24 3 parts.
In positioning system, respectively there is the locating shaft 18 of two raised annular steps with certain width parallel, and is fastened on the support 11 with bolt 20 and compact heap 19 with 21, form ＂ V ＂ type positioning supports.Ring-shaped step on the locating shaft 18 and 21 contacts with the skirt section of piston 23, guarantee that piston 23 is put thereon after, other positions in skirt section do not contact with 21 with locating shaft 18, piston 23 skirt section center lines are parallel with 21 with locating shaft 18.
In order to increase the service life, locating shaft 18 and 21 can rotate around axis in 360 ° of scopes.
In order to adapt to the piston that detects different cultivars, locating shaft 18 and 21 and steady arm 16 can change.
Press shown in Fig. 3 .1, two contact arms of auxiliary locator 12 are same rigid body, can around with two locating shafts 18 and 21 place plane parallel, the axle rotation vertical with two locating shaft axial lines.Auxiliary locator 12 links by bearing pin 14 and support 11, and auxiliary locator 12 can be rotated around bearing pin 14, and auxiliary locator 12 is pressed in and surveys on the rod 22 during work, makes to survey rod 22 and locating shaft 18 and 21 place plane parallel.Above-mentioned positioning system defines the unique position of piston 23 in the space.
In measuring system, sensor 13 and 17 usefulness nuts 15 are fastened on the pedestal 11.During adjustment, survey rod 22 and be through in the pin-and-hole of adjustment body 24; During work, survey rod and be through in the pin-and-hole of piston 23.
Principle of work process of the present invention: the zero-bit of at first using adjustment body 24 calibrating sensors 13 and 17 before the work.Specific practice is: will survey rod 22 and be through in the pin-and-hole of adjustment body 24, and it is lain in putting of measurement piston 23 shown in Figure 4, and adjust sensor 13 and 17 then, its error indicating value is referred in zero-bit, and then finish the calibration of instrument.Adjustment body 24 is etalons of the present invention, can satisfy the indicating value delivery request.
Behind the instrument calibration, take off the adjustment body 24 that band is surveyed rod 22.When measuring piston 23, will survey rod 22 again and be through in the pin-and-hole of piston 23, and it will be put on the position of piston shown in Figure 4 23, and can begin to measure.Measurement result is calculated by (1) given in the aforementioned piston pin hole error synthesis measuring method, (2) formula.Promptly draw one group of piston pin hole position error of perpendicularity V
1With compression height error H
1Again with piston 23 around its skirt section center line turnback, be put on the measuring position, repeat aforementioned measurement, draw another group error of perpendicularity V
2With compression height error H
2, the piston pin hole center line is to the error of perpendicularity V=(V of piston skirt center line
1-V
2)/2.
Good effect of the present invention: an available cover is located and measuring system, measures the error of perpendicularity and the compression height error of piston simultaneously.And higher measuring accuracy is arranged.Can Direct Test piston pin hole center line to the error of perpendicularity in certain one side skirt section, be a kind of effective process inspection means.
Fig. 2 is the structural representation of prior art, and Fig. 3 .1, Fig. 3 .2, Fig. 3 .3 are structural representations of the present invention, and Fig. 4 measures view.
Most preferred embodiment: adjustment body 24, survey rod 22, locating shaft 18 and 21 are all made with GCr15, and through quenching and Ageing Treatment.Pedestal 11 is cylinder iron made, and other other parts are made with the 45# steel.
Claims (4)
1. piston pin hole site error comprehensive measuring method is undertaken by determining positioning reference and measuring basis, it is characterized in that making positioning reference with piston skirt and end face, makes measuring basis with piston pin hole.
The error of perpendicularity and compression height error be by with same group of location and the piston pin hole center line theoretical position that obtained of measuring basis 00 and physical location 0 ' 0 ' departure Δ A and Δ B, through the method acquisition of weighted sum.
2. piston pin hole site error comprehensive measurement device is made up of positioning system, measuring system and adjustment body (etalon), it is characterized in that in positioning system, respectively there are two locating shafts 18 and 21 to be fastened on the support abreast with certain width raised step, form ＂ V ＂ type positioning supports, two contact arms of auxiliary locator 12 are same rigid body, can around with two locating shafts 18 and 21 place plane parallel, vertical with two axial lines axle rotation.
3. by the described piston position error synthesis of claim 2 measurement mechanism, it is characterized in that locating shaft 18 and 21 can rotate around axis in 360 ° of scopes.
4. by the described piston pin hole site error of claim 2 comprehensive measurement device, it is characterized in that locating shaft 18 and 21 and steady arm 16 can change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91108617 CN1038528C (en) | 1991-08-29 | 1991-08-29 | Method and device for comprehensively measuring position error of piston pin hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91108617 CN1038528C (en) | 1991-08-29 | 1991-08-29 | Method and device for comprehensively measuring position error of piston pin hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1070041A CN1070041A (en) | 1993-03-17 |
| CN1038528C true CN1038528C (en) | 1998-05-27 |
Family
ID=4909379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91108617 Expired - Fee Related CN1038528C (en) | 1991-08-29 | 1991-08-29 | Method and device for comprehensively measuring position error of piston pin hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1038528C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907430B (en) * | 2010-07-12 | 2011-12-21 | 安徽华祥实业有限公司 | General measuring instrument for position and pulsation of annular groove outside piston |
| CN102162728B (en) * | 2010-12-17 | 2012-10-31 | 南京工程学院 | Method for measuring minimum area of line profile error of cross section of skirt part of variable-ellipse piston |
| CN106643621A (en) * | 2016-10-19 | 2017-05-10 | 北京海普瑞森科技发展有限公司 | Linear piston detection system |
| CN107121042B (en) * | 2017-06-20 | 2023-01-03 | 江西江铃底盘股份有限公司 | Automobile rear axle housing oil drain plug hole detection tool and detection method |
| CN108458677B (en) * | 2018-02-07 | 2020-02-07 | 广西玉柴机器股份有限公司 | Method for detecting special-shaped pin hole of piston on roundness measuring instrument |
| CN108955491B (en) * | 2018-07-30 | 2020-08-25 | 陕西柴油机重工有限公司 | Multifunctional chassis tool for measuring piston profile by roundness measuring instrument and measuring method thereof |
| CN109317937B (en) * | 2018-11-12 | 2020-07-10 | 合肥工业大学 | Improved aluminum piston machining method |
-
1991
- 1991-08-29 CN CN 91108617 patent/CN1038528C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1070041A (en) | 1993-03-17 |
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