CN101029821A - Comprehensive pneumatic measuring device for link rod - Google Patents
Comprehensive pneumatic measuring device for link rod Download PDFInfo
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- CN101029821A CN101029821A CN 200710013678 CN200710013678A CN101029821A CN 101029821 A CN101029821 A CN 101029821A CN 200710013678 CN200710013678 CN 200710013678 CN 200710013678 A CN200710013678 A CN 200710013678A CN 101029821 A CN101029821 A CN 101029821A
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Abstract
An integrated pneumatic measurement device used on link is prepared as setting the first measurement branch for measuring x directional parallelism of link two holes axle, the second measurement branch for measuring Y directional parallelism of link two hole axle, the third measurement branch for measuring center distance of link two holes, the fourth measurement branch for measuring the first hole cylindricity of link and the fifth measurement branch for measuring the second hole cylindricity of link separately on the first and the second measurement heads.
Description
Technical field
The present invention relates to the air measuring device technical field, relate in particular to a kind of air measuring device that is used for the connecting rod composite measurement.
Background technology
The pneumatic gauging method is as medium with pressurized air, utilize air at ducted flow and pressure with the physical dimension of pipeline or the characteristic of change of shape, size quantity or displacement variation are changed into flow or pressure variety, thereby realize high-precision measurement, the employed instrument of pneumatic gauging method is an air-gauge, it and the supporting use of air measuring device.Because it can carry out non-cpntact measurement, advantage such as high pressure draught sprays to surface of the work and has a self-cleaning action, and is less demanding and simple in structure to environmental baseline, that operating maintenance convenient, cost is low is so be widely used in the mechanical industry production scene.
For IC engine link rod, because it has two holes, size and form and position tolerance that it will detect are a lot, for example the depth of parallelism in two holes, centre distance, and the cylindricity in each hole and size etc., usually need many cover cubings, finish work for inspection by many people, measuring error is big, efficiency of measurement is low, it is many to take manpower, and labour intensity is big, can not satisfy the requirement of main engine plants.Do not have record to be specifically designed to the air measuring device of measuring each form and position tolerance of connecting rod in the known technology, especially be fit to measure the air measuring device of the two hole depth of parallelisms.
Summary of the invention
Technical matters to be solved by this invention is: a kind of comprehensive pneumatic measuring device for link rod is provided, and this device has been realized the pneumatic gauging of connecting rod having improved measuring accuracy and efficiency of measurement in conjunction with air-gauge.
For solving the problems of the technologies described above, technical scheme of the present invention is: comprehensive pneumatic measuring device for link rod, comprise first gauge head that is used to measure connecting rod first hole, with second gauge head that is used to measure connecting rod second hole, described first gauge head and second gauge head are installed on a pedestal, described first gauge head is provided with the measurement branch road that several can be connected with the corresponding data indicating member of air-gauge with second gauge head, measure at described several and to comprise at least in branch roads that first of a depth of parallelism that is used to measure connecting rod two axially bored line directions Xs measures second of the depth of parallelism that branch road and one is used to measure connecting rod two axially bored line Y directions and measure branch road.
As a kind of optimal way, described first measure branch road comprise be opened on the first gauge head outer peripheral face respectively and the second gauge head outer peripheral face on a plurality of X to depth of parallelism nozzle, these X to depth of parallelism nozzle be distributed in one simultaneously the axis by first gauge head and second gauge head X to the plane with two apart on the intersection of the upper and lower surface level of predetermined distance; Described these nozzles comprise one group in first hole of connecting rod during with respect to the second hole reversal dip, be used to measure first hole with respect to an X of first gauge head maximum inclination on described predetermined distance to depth of parallelism nozzle, with one group be used to measure first hole with respect to the 2nd X of first gauge head minimal tilt amount on described predetermined distance to depth of parallelism nozzle, with one group be used to measure second hole with respect to second gauge head the 3rd X of maximum inclination on the described predetermined distance to depth of parallelism nozzle and one group be used to measure second hole with respect to the 4th X of second gauge head minimal tilt amount on described predetermined distance to depth of parallelism nozzle; A described X communicates to the parallel connection of depth of parallelism nozzle with the 3rd X to depth of parallelism nozzle, and described the 2nd X communicates to the parallel connection of depth of parallelism nozzle with the 4th X to depth of parallelism nozzle.
As a kind of optimal way, described second measures branch road comprises that two groups of Y that are opened on the first gauge head outer peripheral face are to depth of parallelism nozzle, these two groups of Y to depth of parallelism nozzle be positioned at a Y by the first gauge head axis to vertical plane with two apart predetermined distance on, on the intersection of lower horizontal plane, comprising one group in first hole of connecting rod during with respect to the second hole reversal dip, be used to measure first hole with respect to first gauge head a Y of maximum inclination on the described predetermined distance to depth of parallelism nozzle and one group be used to measure first hole with respect to the 2nd Y of first gauge head minimal tilt amount on described predetermined distance to depth of parallelism nozzle; Be opened on two groups of Y on the second gauge head outer peripheral face to depth of parallelism nozzle, these two groups of Y to depth of parallelism nozzle be positioned at a Y by the second gauge head axis to vertical plane with two apart on the intersection of the upper and lower surface level of predetermined distance, comprising one group in first hole of connecting rod during with respect to the second hole reversal dip, be used to measure second hole with respect to second gauge head the 3rd Y of maximum inclination on the described predetermined distance to depth of parallelism nozzle and one group be used to measure second hole with respect to the 4th Y of second gauge head minimal tilt amount on described predetermined distance to depth of parallelism nozzle; A described Y communicates to the parallel connection of depth of parallelism nozzle with the 3rd Y to depth of parallelism nozzle, and the 2nd Y communicates to the parallel connection of depth of parallelism nozzle with the 4th Y to depth of parallelism nozzle.
As a kind of optimal way, described each group depth of parallelism nozzle is made of the nozzle of two diagonal angle settings.
As a kind of improvement, it also comprises the 3rd a measurement branch road that is used to measure connecting rod two hole centre distance, and the described the 3rd measures branch road comprises one group of centre distance nozzle that is fixed in described pedestal; And slide that is slidingly mounted on described pedestal, with one be used to drive first propulsion system of described slide along the two-way slip of directions X, described first gauge head is fixedly connected on described pedestal, and described second gauge head is fixed in described slide, and described centre distance nozzle is corresponding with described slide position.
As a kind of improvement, it comprises that also the 4th of a cylindricity that is used to measure connecting rod first hole measures the 5th of cylindricity that branch road and one is used to measure connecting rod second hole and measure branch road.
Improve as another kind, it also comprises a supporting plate that axially is sheathed on described first gauge head and second gauge head, and one is used to drive second propulsion system that supporting plate moves up and down.
Owing to adopted technique scheme, this comprehensive pneumatic measuring device for link rod combines the pneumatic gauging that has realized connecting rod with air-gauge, measure the depth of parallelism that branch road can be measured connecting rod two axially bored line directions Xs by first, measure the depth of parallelism that branch road can be measured connecting rod two axially bored line Y directions by second, measure the centre distance that branch road can be measured connecting rod two holes by the 3rd, measure the cylindricity that branch road can be measured connecting rod first hole by the 4th, measure the cylindricity that branch road can be measured connecting rod second hole by the 5th, above-mentioned measurement index can show respectively on the corresponding data indicating member of air-gauge intuitively, thereby, the present invention is a composite measurement instrument, it is compared with the contact type measurement instrument, not only measuring accuracy height, and efficiency of measurement height has reduced the detection cost.
Because each group depth of parallelism nozzle is made of the nozzle of two diagonal angle settings, so when measuring the depth of parallelism in two holes, the diameter error in hole, deviation from circular from, deviation from cylindrical form, roughness error and hole can be thought to measurement result to the factors such as the error of perpendicularity of bottom surface not to be influenced, thereby has improved anti-interference of the present invention.
Because it also comprises a supporting plate that axially is sheathed on described first gauge head and second gauge head, one is used to drive second propulsion system that supporting plate moves up and down, thereby can pass in and out the measuring position by control link, and loading and unloading are convenient, and measuring speed is fast, stable performance.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a kind of vertical view of connecting rod;
The structure principle chart of Fig. 2 embodiment of the invention when measuring connecting rod two hole X to the depth of parallelism;
The structure principle chart of Fig. 3 embodiment of the invention when measuring connecting rod two hole Y to the depth of parallelism;
The structure principle chart of Fig. 4 embodiment of the invention when measuring connecting rod two hole centre distance.
Embodiment
Fig. 1 is the vertical view of a kind of IC engine link rod A, in order to narrate conveniently, will be defined as directions X by the direction of two centerline holes, and the direction of two holes with vertical center line is defined as the Y direction.
The present invention mainly comprises two gauge heads, is respectively equipped with the measurement branch road that several can be connected with the corresponding data indicating member of air-gauge on these two gauge heads, and the data presentation that these data indicating members can record two gauge heads is intuitively come out.Air-gauge adopts the float type air-gauge, can certainly adopt digital air-gauge.The data indicating member of float type air-gauge adopts such structure usually, in a glass tube that is provided with scale, buoy is set, this glass tube one end communicates with pressure-stabilized air source, the other end communicates with the measurement branch road; the height of buoy is corresponding with the air pressure of measuring branch road, is corresponding with respect to the air gap of measuring piece with measurement branch road end more furtherly.
As shown in Figure 2, it mainly comprises first gauge head 1 that is used to measure connecting rod first hole, with second gauge head 2 that is used to measure connecting rod second hole, be used to drive second propulsion system that supporting plate 3 moves up and down with 3, one of a supporting plate that axially are sheathed on described first gauge head and second gauge head, second propulsion system preferentially adopt air cylinder device, second propulsion system can pass in and out the measuring position by control link A by supporting plate 3, loading and unloading are convenient, and measuring speed is fast, stable performance.Measure at described several and to comprise in branch roads that first of a depth of parallelism that is used to measure connecting rod two axially bored line directions Xs measures branch road, for the purpose of simplifying the description, in Fig. 2, other parts of the present invention have been dispensed.
Described first measure branch road comprise be opened on first gauge head, 1 outer peripheral face respectively and second gauge head, 2 outer peripheral faces on a plurality of X to depth of parallelism nozzle, these X to depth of parallelism nozzle be distributed in one simultaneously the axis by first gauge head and second gauge head X to the plane with two apart on the intersection of the upper and lower surface level of predetermined distance; Described these nozzles comprise one group in first hole of connecting rod during with respect to the second hole reversal dip, be used to measure first hole with respect to an X of first gauge head maximum inclination on described predetermined distance to depth of parallelism nozzle 11, with one group be used to measure first hole with respect to the 2nd X of first gauge head minimal tilt amount on described predetermined distance to depth of parallelism nozzle 12, with one group be used to measure second hole with respect to second gauge head the 3rd X of maximum inclination on the described predetermined distance to depth of parallelism nozzle 21 and one group be used to measure second hole with respect to the 4th X of second gauge head minimal tilt amount on described predetermined distance to depth of parallelism nozzle 22; A described X communicates and is connected with the first data indicating member 41 of air-gauge to 21 parallel connections of depth of parallelism nozzle to depth of parallelism nozzle 11 and the 3rd X, and described the 2nd X communicates and is connected with the second data indicating member 42 of air-gauge to 22 parallel connections of depth of parallelism nozzle to depth of parallelism nozzle 12 and the 4th X.
The difference in height of the first data indicating member 41 and the second data indicating member, 42 buoys is exactly the depth of parallelism of two axially bored lines specified altitude on directions X.
As shown in Figure 3, the present invention comprises that also second of a depth of parallelism that is used to measure connecting rod two axially bored line Y directions measures branch road, and for the purpose of simplifying the description, Fig. 3 has dispensed other parts of the present invention.
Described second measures branch road comprises that two groups of Y that are opened on first gauge head, 1 outer peripheral face are to depth of parallelism nozzle, these two groups of Y to depth of parallelism nozzle be positioned at a Y by the first gauge head axis to vertical plane with two apart predetermined distance on, on the intersection of lower horizontal plane, comprising one group in first hole of connecting rod during with respect to the second hole reversal dip, be used to measure first hole with respect to first gauge head a Y of maximum inclination on the described predetermined distance to depth of parallelism nozzle 13 and one group be used to measure first hole with respect to the 2nd Y of first gauge head minimal tilt amount on described predetermined distance to depth of parallelism nozzle 14; Be opened on two groups of Y on the second gauge head outer peripheral face to depth of parallelism nozzle, these two groups of Y to depth of parallelism nozzle be positioned at a Y by the second gauge head axis to vertical plane with two apart on the intersection of the upper and lower surface level of predetermined distance, comprising one group in first hole of connecting rod during with respect to the second hole reversal dip, be used to measure second hole with respect to second gauge head the 3rd Y of maximum inclination on the described predetermined distance to depth of parallelism nozzle 23 and one group be used to measure second hole with respect to the 4th Y of second gauge head minimal tilt amount on described predetermined distance to depth of parallelism nozzle 24; A described Y communicates and is connected with the 3rd data indicating member 43 of air-gauge to 23 parallel connections of depth of parallelism nozzle to depth of parallelism nozzle 13 and the 3rd Y, and the 2nd Y communicates and is connected with the 4th data indicating member 44 of air-gauge to 24 parallel connections of depth of parallelism nozzle to depth of parallelism nozzle 14 and the 4th Y.
The difference in height of the 3rd data indicating member 43 and the 4th data indicating member 44 buoys is exactly the depth of parallelism of two axially bored lines specified altitude on the Y direction.
In the above description, described each group depth of parallelism nozzle is made of the nozzle of two diagonal angle settings, its objective is that diameter error, deviation from circular from, deviation from cylindrical form, roughness error and the hole of offsetting the hole to the influence to measurement result of the factors such as the error of perpendicularity of bottom surface, improve anti-interference of the present invention.
The present invention also comprises the 3rd a measurement branch road that is used to measure connecting rod two hole centre distance, as shown in Figure 4, for the purpose of simplifying the description, other parts of the present invention has been dispensed.
The described the 3rd measures branch road comprises one group of centre distance nozzle 5 that is fixed in described pedestal; And slide 7 that is slidingly mounted on described pedestal 6, with one be used to drive first propulsion system of described slide 7 along the two-way slip of directions X, described first gauge head 1 is fixedly connected on described pedestal 6, described second gauge head 2 is fixed in described slide 7, described centre distance nozzle 5 is corresponding with described slide 7 positions, and first propulsion system are preferably air cylinder device.When giving the first propulsion system application of force, second gauge head 2 moves outside slide 7 is under the drive of second propulsion system, the bus of first gauge head 1 and second gauge head 2 contacts with the corresponding bus in two holes respectively, the distance in connecting rod two holes and the overall dimensions deviation in two holes are decided by crack between slide 7 and the centre distance nozzle 5, this gap can show on the corresponding data indicating member 45 of air-gauge, and the diameter deviation in these numerical value cancellation two holes can obtain the deviate of two hole centre distance.
The present invention comprises that also the 4th of a cylindricity that is used to measure connecting rod first hole measures the 5th of cylindricity that branch road and one is used to measure connecting rod second hole and measure branch road.
The described the 4th measures branch road comprises that two groups are opened on the first gauge head outer peripheral face and lay respectively at two cylindricity nozzles on the upper and lower surface level of predetermined distance; The described the 5th measures branch road comprises that two groups are opened on the second gauge head outer peripheral face and lay respectively at two cylindricity nozzles on the upper and lower surface level of predetermined distance; Described each group cylindricity nozzle respectively by two radially opposite nozzles constitute.Because its structure and common internal diameter gauge head are basic identical, so do not illustrate in the accompanying drawings.In fact measure branch road by the 4th measurement branch road and the 5th and not only can record the cylindricity in two holes, it can also record the aperture in two holes, can not lead to misunderstanding among this those skilled in the art.
The present invention can detect the depth of parallelism, the depth of parallelism of Y direction, the centre distance of the directions X in connecting rod two holes simultaneously, and the cylindricity deviation in the diameter deviation in two holes and two holes, not only be convenient to operation and measuring accuracy height, the efficiency of measurement height has reduced measured intensity and has measured cost.
Claims (9)
1, comprehensive pneumatic measuring device for link rod, it is characterized in that: comprise first gauge head (1) that is used to measure connecting rod first hole, with second gauge head (2) that is used to measure connecting rod second hole, described first gauge head and second gauge head are installed on a pedestal (6), described first gauge head (1) is provided with the measurement branch road that several can be connected with the corresponding data indicating member of air-gauge with second gauge head (2), measure at described several and to comprise at least in branch roads that first of a depth of parallelism that is used to measure connecting rod two axially bored line directions Xs measures second of the depth of parallelism that branch road and one is used to measure connecting rod two axially bored line Y directions and measure branch road.
2, comprehensive pneumatic measuring device for link rod as claimed in claim 1, it is characterized in that: described first measure branch road comprise be opened on first gauge head (1) outer peripheral face respectively and second gauge head (2) outer peripheral face on a plurality of X to depth of parallelism nozzle, these X to depth of parallelism nozzle be distributed in one simultaneously the axis by first gauge head and second gauge head X to the plane with two apart on the intersection of the upper and lower surface level of predetermined distance; Described these nozzles comprise one group in first hole of connecting rod during with respect to the second hole reversal dip, be used to measure first hole with respect to an X of first gauge head maximum inclination on described predetermined distance to depth of parallelism nozzle (11), with one group be used to measure first hole with respect to the 2nd X of first gauge head minimal tilt amount on described predetermined distance to depth of parallelism nozzle (12), with one group be used to measure second hole with respect to second gauge head the 3rd X of maximum inclination on the described predetermined distance to depth of parallelism nozzle (21) and one group be used to measure second hole with respect to the 4th X of second gauge head minimal tilt amount on described predetermined distance to depth of parallelism nozzle (22); A described X communicates to depth of parallelism nozzle (21) parallel connection with the 3rd X to depth of parallelism nozzle (11), and described the 2nd X communicates to depth of parallelism nozzle (22) parallel connection with the 4th X to depth of parallelism nozzle (12).
3, comprehensive pneumatic measuring device for link rod as claimed in claim 2, it is characterized in that: described second measures branch road comprises that two groups of Y that are opened on first gauge head (1) outer peripheral face are to depth of parallelism nozzle, these two groups of Y to depth of parallelism nozzle be positioned at a Y by the first gauge head axis to vertical plane with two apart predetermined distance on, on the intersection of lower horizontal plane, comprising one group in first hole of connecting rod during with respect to the second hole reversal dip, be used to measure first hole with respect to first gauge head a Y of maximum inclination on the described predetermined distance to depth of parallelism nozzle (13) and one group be used to measure first hole with respect to the 2nd Y of first gauge head minimal tilt amount on described predetermined distance to depth of parallelism nozzle (14); Be opened on two groups of Y on the second gauge head outer peripheral face to depth of parallelism nozzle, these two groups of Y to depth of parallelism nozzle be positioned at a Y by the second gauge head axis to vertical plane with two apart predetermined distance on, on the intersection of lower horizontal plane, comprising one group in first hole of connecting rod during with respect to the second hole reversal dip, be used to measure second hole with respect to second gauge head the 3rd Y of maximum inclination on the described predetermined distance to depth of parallelism nozzle (23) and one group be used to measure second hole with respect to the 4th Y of second gauge head minimal tilt amount on described predetermined distance to depth of parallelism nozzle (24); A described Y communicates to depth of parallelism nozzle (23) parallel connection with the 3rd Y to depth of parallelism nozzle (13), and the 2nd Y communicates to depth of parallelism nozzle (24) parallel connection with the 4th Y to depth of parallelism nozzle (14).
4, as claim 2 or 3 described comprehensive pneumatic measuring device for link rod, it is characterized in that: described each group depth of parallelism nozzle is made of the nozzle of two diagonal angle settings.
5, comprehensive pneumatic measuring device for link rod as claimed in claim 1, it is characterized in that: it also comprises the 3rd a measurement branch road that is used to measure connecting rod two hole centre distance, and the described the 3rd measures branch road comprises one group of centre distance nozzle (5) that is fixed in described pedestal; And slide (7) that is slidingly mounted on described pedestal (6), with one be used to drive first propulsion system of described slide (7) along the two-way slip of directions X, described first gauge head (1) is fixedly connected on described pedestal (6), described second gauge head (2) is fixed in described slide (7), and described centre distance nozzle (5) is corresponding with described slide (7) position.
6, comprehensive pneumatic measuring device for link rod as claimed in claim 1 is characterized in that: it comprises that also the 4th of a cylindricity that is used to measure connecting rod first hole measures the 5th of cylindricity that branch road and one is used to measure connecting rod second hole and measure branch road.
7, comprehensive pneumatic measuring device for link rod as claimed in claim 6 is characterized in that: the described the 4th measures branch road comprises that two groups are opened on the first gauge head outer peripheral face and lay respectively at two cylindricity nozzles on the upper and lower surface level of predetermined distance; The described the 5th measures branch road comprises that two groups are opened on the second gauge head outer peripheral face and lay respectively at two cylindricity nozzles on the upper and lower surface level of predetermined distance; Described each group cylindricity nozzle respectively by two radially opposite nozzles constitute.
8, comprehensive pneumatic measuring device for link rod as claimed in claim 1 is characterized in that: it also comprises a supporting plate (3) that axially is sheathed on described first gauge head and second gauge head, and one is used to drive second propulsion system that supporting plate (3) moves up and down.
9, comprehensive pneumatic measuring device for link rod as claimed in claim 1 is characterized in that: described air-gauge is made of the float type air-gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710013678 CN101029821A (en) | 2007-03-09 | 2007-03-09 | Comprehensive pneumatic measuring device for link rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710013678 CN101029821A (en) | 2007-03-09 | 2007-03-09 | Comprehensive pneumatic measuring device for link rod |
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| Publication Number | Publication Date |
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| CN101029821A true CN101029821A (en) | 2007-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710013678 Pending CN101029821A (en) | 2007-03-09 | 2007-03-09 | Comprehensive pneumatic measuring device for link rod |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424091A (en) * | 2013-07-10 | 2013-12-04 | 温州华聚科技有限公司 | Ultra-thin pneumatic measuring head and processing method thereof |
| CN103737477A (en) * | 2013-12-25 | 2014-04-23 | 四川富临集团成都机床有限责任公司 | Method and device for measuring and automatically repairing cylindricity error for numerical control honing machine |
| CN103837104A (en) * | 2014-02-27 | 2014-06-04 | 贵阳瑞极精密测量有限公司 | Pneumatic measuring head for outer diameter of large workpieces |
| CN104501748A (en) * | 2014-12-09 | 2015-04-08 | 重庆迪科汽车研究有限公司 | Cylindricity detection device of connecting rod hole |
| CN106643439A (en) * | 2016-10-14 | 2017-05-10 | 中车大连机车车辆有限公司 | Quick detection device and method for parallelism of axes of large and small end holes of connecting rod of diesel engine |
| CN108645363A (en) * | 2018-05-16 | 2018-10-12 | 大连大学 | Layering section gauge connects the method for the large and small head bore axis operating center distance of component of rod category |
| CN108692691A (en) * | 2018-05-16 | 2018-10-23 | 大连大学 | The method for measuring connecting rod class part's machining errors |
| CN109099878A (en) * | 2018-11-05 | 2018-12-28 | 盛瑞传动股份有限公司 | A kind of connecting rod size detecting device |
| CN109269569A (en) * | 2018-11-05 | 2019-01-25 | 盛瑞传动股份有限公司 | A kind of connecting rod automatic checkout system |
| CN105783704B (en) * | 2016-03-25 | 2019-05-17 | 浙江大学 | Four-electrode quality analyzer to bar measurement of paralleism system |
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2007
- 2007-03-09 CN CN 200710013678 patent/CN101029821A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424091A (en) * | 2013-07-10 | 2013-12-04 | 温州华聚科技有限公司 | Ultra-thin pneumatic measuring head and processing method thereof |
| CN103737477A (en) * | 2013-12-25 | 2014-04-23 | 四川富临集团成都机床有限责任公司 | Method and device for measuring and automatically repairing cylindricity error for numerical control honing machine |
| CN103837104A (en) * | 2014-02-27 | 2014-06-04 | 贵阳瑞极精密测量有限公司 | Pneumatic measuring head for outer diameter of large workpieces |
| CN103837104B (en) * | 2014-02-27 | 2016-05-25 | 贵阳瑞极精密测量有限公司 | Large-size workpiece external diameter Pneumatic measuring head |
| CN104501748A (en) * | 2014-12-09 | 2015-04-08 | 重庆迪科汽车研究有限公司 | Cylindricity detection device of connecting rod hole |
| CN105783704B (en) * | 2016-03-25 | 2019-05-17 | 浙江大学 | Four-electrode quality analyzer to bar measurement of paralleism system |
| CN106643439A (en) * | 2016-10-14 | 2017-05-10 | 中车大连机车车辆有限公司 | Quick detection device and method for parallelism of axes of large and small end holes of connecting rod of diesel engine |
| CN108645363A (en) * | 2018-05-16 | 2018-10-12 | 大连大学 | Layering section gauge connects the method for the large and small head bore axis operating center distance of component of rod category |
| CN108692691A (en) * | 2018-05-16 | 2018-10-23 | 大连大学 | The method for measuring connecting rod class part's machining errors |
| CN109099878A (en) * | 2018-11-05 | 2018-12-28 | 盛瑞传动股份有限公司 | A kind of connecting rod size detecting device |
| CN109269569A (en) * | 2018-11-05 | 2019-01-25 | 盛瑞传动股份有限公司 | A kind of connecting rod automatic checkout system |
| CN109269569B (en) * | 2018-11-05 | 2020-12-29 | 盛瑞传动股份有限公司 | Automatic detection system for connecting rod |
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