CN101701805A - Inner bore detection method and special detection device - Google Patents
Inner bore detection method and special detection device Download PDFInfo
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- CN101701805A CN101701805A CN200910252256A CN200910252256A CN101701805A CN 101701805 A CN101701805 A CN 101701805A CN 200910252256 A CN200910252256 A CN 200910252256A CN 200910252256 A CN200910252256 A CN 200910252256A CN 101701805 A CN101701805 A CN 101701805A
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- endoporus
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Abstract
The invention discloses an inner bore detection method with high measurement accuracy and a special detection device. The method is characterized in that two bore sections are selected along a bore path, center points of the two bore sections determine a reference axle line, the deviation of center points of other bore sections of the bore path and the reference axle line is observed, and at last the detection data of the inner bore is obtained. The reference axle line which is determined by using the center points of the two bore sections is used to replace the traditional mandrel, thereby eliminating the measurement error caused by the bending deformation of the mandrel, and greatly improving the measurement accuracy. The center points of the bore sections are determined by the device. The device comprises a supporting frame with a through hole, wherein at least three length adjustable supporting feet and a radically arranged meter rod are arranged on the supporting frame along the peripheral direction of the through hole at intervals, a target is arranged on the through hole, and the meter rod can rotate along the bulleye axis of the target.
Description
Technical field
The present invention relates to a kind of big machinery product when processing, assembling, be used to detect the linearity of its endoporus axial line, the method and the device of group hole right alignment.
Background technology
Big machinery product such as cylindrical shell endoporus, backing ring dead eye etc. need detect linearity, the group hole right alignment of its axial line when carrying out machining and assembling.Detection with large-scale workpiece endoporus axial line linearity is an example, conventional detection as shown in Figure 3, wherein adopted a kind of pick-up unit that has longer mandrel, this pick-up unit is equipped with one and extends radially out and can be along the axially movable table bar of mandrel on described mandrel, elder generation is supported on this mandrel in the endoporus duct to be detected by the supporting construction at mandrel two ends during use, and make mandrel and duct coaxial by adjusting supporting construction, axially movable then table bar can obtain the detection data of this endoporus by the variation of pointer on the table bar.Above-mentioned this detection method is subjected to that mandrel is diastrophic to be influenced, and accuracy of measurement is not high, and uses very inconvenience when measuring the different hole group of diameter.Simultaneously, this method is confined to the contact measurement of smaller diameter bore, just is inconvenient to use in larger-diameter hole more than 1 meter for diameter.
Summary of the invention
Technical matters solved by the invention provides high inner bore detection method of a kind of accuracy of measurement and special detection device.
For solving the problems of the technologies described above, the characteristics of this inner bore detection method provided by the present invention are to select cross section, two holes along the duct, central point with cross section, described two holes is established a datum axis, observe the central point in other cross section, hole in this duct and the deviation of this datum axis, obtain the detection data of this endoporus at last.This method utilization substitutes existing mandrel by the datum axis that central point is established in cross section, two holes, eliminated because of the caused measuring error of mandrel flexural deformation, so accuracy of measurement greatly improves.
The present invention also provides a kind of endoporus pick-up unit simultaneously, this device comprises the bracing frame of a band through hole, at least three length-adjustable legs that circumferentially are provided with at interval along through hole are installed on the support frame as described above, and table bar that radially is provided with, on the described through hole target is installed, described table bar can be along the target center axis rotation of target.The central point in each cross section, hole is determined by this endoporus pick-up unit provided by the present invention in the detection method of the present invention.This device in use, its bracing frame is supported in duct by described three legs at least, the adjustment form bar makes the gauge head of indicating gauge contact with hole wall, bar is shown in rotation then, regulate the length of each leg according to the variation of indicator gage finger, pointer up to indicating gauge is invariable, and the target center that is about to target transfers to the central point in respective aperture cross section and overlaps, and the target center of target is the central point in this cross section, hole at this moment.This apparatus structure compactness, more simple than existing endoporus pick-up unit structure, and use is more easy, can improve efficiency of measurement greatly.
Description of drawings
Fig. 1 is the structural representation of the application's endoporus pick-up unit.
Fig. 2 is the structural representation of bracing frame shown in Fig. 1.
Fig. 3 is the synoptic diagram of the inner bore detection method of existing large-scale workpiece.
Fig. 4,5 is for the synoptic diagram of inner bore detection method of the present invention.
Be labeled as among the figure: extract ring 1, pressure ring 2, target 3, bearing 4, table bar 5, bracing frame 6, nut 7, through hole 8, interior cover 9, overcoat 10, external part 11, adjust bolt 12, duct 13, cross section, hole 140, cross section, hole 141, datum axis 15, cross section, hole 16, see endoporus pick-up unit 18, the mandrel 19 of taking aim at system 17, large-scale workpiece.
Embodiment
The present invention is described further below in conjunction with accompanying drawing.
As shown in Figure 4 and Figure 5, this inner bore detection method characteristics of the present invention are 13 selection cross sections, two holes 140,141 along the duct, central point with cross section, described two holes 140,141 is established a datum axis 15, observe the central point in other cross section, hole 16 in this duct 13 and the deviation of this datum axis 15, obtain the detection data of this endoporus at last.As a rule, preferably set up described datum axis 15,, better guarantee the accuracy of measuring to guarantee the axle center of the more approaching whole duct of datum axis 15 13 reality with central point near the cross section, hole 140,141 at 13 head and the tail two ends, duct.The inner bore detection method of this large-scale workpiece of the present invention has utilized the principle of 2 definite straight lines geometrically, substitute existing mandrel 19 by establishing datum axis 15 by the central point in cross section, two holes 140,141, eliminated because of the caused measuring error of mandrel 19 flexural deformations, so accuracy of measurement greatly improves.
Because datum axis 15 is virtual straight lines establishing out by the central point in cross section, described two holes 140,141, has certain degree of difficulty during observation.In order to overcome this problem, as shown in Figure 4 and Figure 5, the system 17 that takes aim at that sees can be set outside described duct 13, adjust this sight and take aim at the observation position of system 17 and angle the central point of taking aim at the cross section, described two holes 140,141 that system 17 observes from this sight is overlapped, establish out described datum axis 15 thereby take aim at system 17 by this sight; Take aim at the central point in other cross section, hole 16 in system 17 observation ducts 13 and the radial missing of this datum axis 15 by this sight then, obtain the detection data of this endoporus at last.Wherein, sight is taken aim at system 17 and can be adopted the optical devices such as optics micr-alignment telescope of measuring linearity, flatness parameter function as having.
The central point in each cross section, hole is determined by following this endoporus pick-up unit 18 in the detection method of the present invention.
As depicted in figs. 1 and 2, this endoporus pick-up unit 18 comprises the bracing frame 6 of a band through hole 8, at least three length-adjustable legs that circumferentially are provided with at interval along through hole 8 are installed on the support frame as described above 6, and table bar 5 that radially is provided with, on the described through hole 8 target 3 is installed, described table bar 5 can be along the target center axis rotation of target 3.Identical with existing endoporus pick-up unit, on endoporus pick-up unit of the present invention, indicating gauge is installed at the head of showing bar 5.During use, its bracing frame 6 is supported in duct 13 by described three legs at least, adjustment form bar 5 makes the gauge head of indicating gauge contact with hole wall, bar 5 is shown in rotation then, regulate the length of three legs according to the variation of indicator gage finger, pointer up to indicating gauge is invariable, and the target center that is about to target 3 transfers to the central point in respective aperture cross section and overlaps, and the target center of target 3 is the central point in this cross section, hole at this moment.This apparatus structure compactness, more simple than existing endoporus pick-up unit structure, and use is more easy, can improve efficiency of measurement greatly.Wherein, take aim at system 17 for ease of sight and simultaneously the target center of each target 3 is observed, described target 3 adopts transparent material to make.
As depicted in figs. 1 and 2, on the basis of said structure, overlap, on bracing frame 6, be arranged at intervals with four legs, 90 ° at interval of adjacent two legs for the target center with target 3 transfers to the central point in respective aperture cross section.90 ° a leg is set at the circumferential every interval of bracing frame 6 upper edge through holes, when adjusting the length of one of them leg, therefore can impact hardly other leg vertical, can fast target center be transferred to central point and overlap with the respective aperture cross section with this leg; The quantity of leg is made as four, and two then relative legs are that rotational symmetry is provided with, and such four legs are arranged in cross structure, and the adjustment of last lower support leg is very little to the influence of left and right sides leg, center, searching hole that can be more convenient; Simultaneously, the stability of strutting system of four legs is higher, can improve accuracy of detection.
As Fig. 1, as a kind of concrete structure of realizing 5 rotations of table bar, an overcoat 10 coaxial with through hole 8 is installed on the end face of support frame as described above 6, be set with bearing 4 on the described overcoat 10, described table bar 5 is installed on the outer ring of bearing 4.The end of table bar 5 is set to a ring texture among the figure, and the axial line of this ring texture is perpendicular with table bar 5, with the ring texture suit and be fixed on the outer ring of bearing 4.It is that promptly when 5 rotations of table bar, the axial line of its Plane of rotation and through hole 8 is perpendicular, with the assurance accuracy of detection along radially being provided with of through hole 8 that the purpose that the end of table bar 5 is set to ring texture is to guarantee preferably to show bar 5.For reducing the side clearance, the bearing 4 on the described overcoat 10 has adopted two cylinder rolling bearings, and bearing inner race is an interference fit with cooperating of overcoat 10.
For ease of the installation of target 3, as Fig. 1, be set with the interior cover 9 coaxial in the described overcoat 4 with overcoat 4, in described target 3 is installed in the center pit of cover 9, the target center of target 3 is positioned at and overlaps on 9 the axial line.Cover 9 becomes circular conical surface with the mating surface preferred design of overcoat 10 in above-mentioned, so that the installing and locating between interior cover 9 and the overcoat 10.In the present embodiment, the cooperation tapering between described interior cover 9 and the overcoat 10 is 1: 30.In addition, loosening for taking place between cover 9 and the overcoat 10 in preventing, cover 9 and the fixing nut 7 of overcoat 10 axial pretightenings in making are installed on the interior cover 9.
As Fig. 1, for the ease of the installation of target 3, be processed with step on the hole wall of described interior cover 9, target 3 is placed on the step and passes through pressure ring 2 axial restraints.For the ease of adjusting the target center position of target 3, described interior cover 9 is provided with the adjusting gear that is used for radially adjusting target 3 target center positions.As a kind of simple structure of adjusting gear, this adjusting gear comprise at least three circumferentially be disposed in the adjustment bolts 12 of cover on 9, each adjust bolt 12 radially pass in cover 9 contact with target 3.Adjust bolt 12 by rotation and make its radial expansion in interior cover 9, change its target center position thereby withstand target 3.In the present embodiment, target 3 adopts discoid glass target, has four adjustment bolts 12 evenly to be provided with at interval along the circumferential of glass target, and the interval is 90 ° between adjacent two adjustment bolts 12; Adjust bolts 12 by four the target center of glass target is adjusted to after interior cover 9 axial lines overlap, with guide rail glue glass target is pasted and fixed on interior overlapping in 9 the center pit again.
As Fig. 2, for the ease of the installation of four legs, support frame as described above 6 is the cross structure with four external parts 11, and described four legs are installed in respectively on four external parts 11.On four external parts 11, be provided with the installation and positioning structure of leg, so that the installing and fixing of leg.
It is higher to adopt the endoporus pick-up unit of above-mentioned large-scale workpiece to survey efficient, adjusts a target center to the central point in respective aperture cross section is general only need about 10 minutes; Structure is reasonable more, stable, and the accuracy of measurement result is higher, can reach 0.03mm.
Claims (14)
1. inner bore detection method, it is characterized in that: (13) select cross section, two holes (140,141) along the duct, central point with cross section, described two holes (140,141) is established a datum axis (15), observe the central point in other cross section, hole (16) in this duct (13) and the deviation of this datum axis (15), obtain the detection data of this endoporus at last.
2. inner bore detection method as claimed in claim 1 is characterized in that: establish described datum axis (15) with the central point near the cross section, hole (140,141) at duct (13) head and the tail two ends.
3. inner bore detection method as claimed in claim 1 or 2, it is characterized in that: the system (17) that takes aim at that sees is set outside described duct (13), adjust this sight and take aim at the observation position of system (17) and angle the central point of taking aim at the cross section, described two holes (140,141) that system (17) observes from this sight is overlapped, establish out described datum axis (15) thereby take aim at system (17) by this sight; Take aim at the central point in other cross section, hole (16) in system (17) observation duct (13) and the radial missing of this datum axis (15) by this sight then, obtain the detection data of this endoporus at last.
4. be exclusively used in the endoporus pick-up unit of claim 1, it is characterized in that: the bracing frame (6) that comprises a band through hole (8), at least three length-adjustable legs that circumferentially are provided with at interval along through hole (8) are installed on the support frame as described above (6), and table bar (5) that radially is provided with, target (3) is installed on the described through hole (8), and described table bar (5) can be along the target center axis rotation of target (3).
5. endoporus pick-up unit as claimed in claim 4 is characterized in that: described target (3) adopts transparent material to make.
6. as claim 4 or 5 described endoporus pick-up units, it is characterized in that: on bracing frame (6), be arranged at intervals with four legs, 90 ° at interval of adjacent two legs
7. as claim 4 or 5 described endoporus pick-up units, it is characterized in that: an overcoat (10) coaxial with through hole (8) is installed on the end face of bracing frame (6), be set with bearing (4) on the described overcoat (10), described table bar (5) is installed on the outer ring of bearing (4).
8. endoporus pick-up unit as claimed in claim 7, it is characterized in that: be set with interior cover (9) in the described overcoat (4) with the coaxial setting of overcoat (4), described target (3) is installed in the center pit of interior cover (9), and the target center of target (3) is positioned on the axial line of cover (9).
9. endoporus pick-up unit as claimed in claim 8 is characterized in that: cover (9) is a circular conical surface with the mating surface of overcoat (10) in described.
10. endoporus pick-up unit as claimed in claim 9 is characterized in that: be equipped with on the cover (9) in described and make interior cover (9) and the fixing nut (7) of overcoat (10) axial pretightening.
11. endoporus pick-up unit as claimed in claim 8 is characterized in that: be processed with step on the hole wall of cover (9) in described, target (3) is placed on the step and passes through pressure ring (2) axial restraint.
12. endoporus pick-up unit as claimed in claim 8 is characterized in that: cover (9) is provided with the adjusting gear that is used for radially adjusting target (3) target center position in described.
13. endoporus pick-up unit as claimed in claim 12 is characterized in that: described adjusting gear comprises at least three adjustment bolts (12) that circumferentially are disposed on the interior cover (9), and each adjustment bolt (12) radially passes interior cover (9) and contacts with target (3).
14. as claim 4 or 5 described endoporus pick-up units, it is characterized in that: support frame as described above (6) is the cross structure with four external parts (11), and four legs are installed in respectively on four external parts (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102522560A CN101701805B (en) | 2009-11-27 | 2009-11-27 | Inner bore detection device for determining central point of cross section of pore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102522560A CN101701805B (en) | 2009-11-27 | 2009-11-27 | Inner bore detection device for determining central point of cross section of pore |
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| CN101701805A true CN101701805A (en) | 2010-05-05 |
| CN101701805B CN101701805B (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009102522560A Active CN101701805B (en) | 2009-11-27 | 2009-11-27 | Inner bore detection device for determining central point of cross section of pore |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062586A (en) * | 2010-11-19 | 2011-05-18 | 华中科技大学 | Inner-bore laser measuring device |
| CN102494641A (en) * | 2011-11-18 | 2012-06-13 | 哈尔滨飞机工业集团有限责任公司 | Hole axis detection tool and detection method thereof |
| CN102589485A (en) * | 2012-03-09 | 2012-07-18 | 石家庄博深石油机械有限公司 | Positive displacement motor stator inner hole straightness measuring device |
| CN106679564A (en) * | 2016-12-15 | 2017-05-17 | 哈尔滨飞机工业集团有限责任公司 | Measurement method of long circular hole |
| CN113319345A (en) * | 2021-05-31 | 2021-08-31 | 二重（德阳）重型装备有限公司 | Dovetail groove machining method for large barrel parts |
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| CN103727902B (en) * | 2014-01-15 | 2016-07-06 | 西安电子科技大学 | Multistage cylindrical compartment section laser detection alignment device |
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| CN100396435C (en) * | 2006-05-18 | 2008-06-25 | 中信重工机械股份有限公司 | Technical method for manufacturing large-diameter grinding machine drum |
| CN101173850A (en) * | 2006-10-31 | 2008-05-07 | 扬动股份有限公司 | Method and tool for measuring center distance between two holes with vertical axis |
| CN100554867C (en) * | 2008-04-23 | 2009-10-28 | 合肥工业大学 | Method for detecting roller completed product |
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- 2009-11-27 CN CN2009102522560A patent/CN101701805B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062586A (en) * | 2010-11-19 | 2011-05-18 | 华中科技大学 | Inner-bore laser measuring device |
| CN102494641A (en) * | 2011-11-18 | 2012-06-13 | 哈尔滨飞机工业集团有限责任公司 | Hole axis detection tool and detection method thereof |
| CN102494641B (en) * | 2011-11-18 | 2013-12-11 | 哈尔滨飞机工业集团有限责任公司 | Hole axis detection tool and detection method thereof |
| CN102589485A (en) * | 2012-03-09 | 2012-07-18 | 石家庄博深石油机械有限公司 | Positive displacement motor stator inner hole straightness measuring device |
| CN102589485B (en) * | 2012-03-09 | 2014-05-21 | 石家庄博深石油机械有限公司 | Positive displacement motor stator inner hole straightness measuring device |
| CN106679564A (en) * | 2016-12-15 | 2017-05-17 | 哈尔滨飞机工业集团有限责任公司 | Measurement method of long circular hole |
| CN113319345A (en) * | 2021-05-31 | 2021-08-31 | 二重（德阳）重型装备有限公司 | Dovetail groove machining method for large barrel parts |
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| Publication number | Publication date |
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| CN101701805B (en) | 2012-01-25 |
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Effective date of registration: 20180322 Address after: 618013 Deyang Pearl River West Road, Sichuan, No. 460 Patentee after: Double (Deyang) heavy equipment Co., Ltd. Address before: 618013 Deyang Pearl River West Road, Sichuan, No. 460 Patentee before: Erzhong Group (Deyang) Heavy Equipment Co., Ltd. |
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