CN100498198C - Coaxial component center deviation measuring apparatus - Google Patents
Coaxial component center deviation measuring apparatus Download PDFInfo
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- CN100498198C CN100498198C CNB2007101926515A CN200710192651A CN100498198C CN 100498198 C CN100498198 C CN 100498198C CN B2007101926515 A CNB2007101926515 A CN B2007101926515A CN 200710192651 A CN200710192651 A CN 200710192651A CN 100498198 C CN100498198 C CN 100498198C
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- sounding rod
- fixed bar
- measuring
- bar
- coaxial component
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Abstract
The invention discloses a measuring instrument for central deviation of a co-axial component. The technical problem to be dissolved is as follows that the invention provides the measuring instrument for central deviation of the co-axial component with small measuring difference, low cost and easy operation, which can measure the central deviation of the co-axial component. The technical proposal is as follows that the instrument consists of a circular metal base with four radial support arms, four measuring bars, four springs, four fixed bars and eight bolts. A round hole is drilled on the top end of the support arm; four groups of fixed bars and measuring bars connected with the springs are respectively inserted into the round hole on the top end of the four support arms with the fixed bar inside and the measuring bar outside; the fixed bar and the measuring bar are fastened by the bolt through a screwed hole. The invention can measure the central deviation of common co-axial component, with measuring difference of less than 0.1mm, easy operation and low cost.
Description
Technical field
The present invention relates to measure the surveying instrument of coaxial component centre deviation, the measuring instrument of particularly a kind of measurement axis symmetry microwave tube urceolus and conductor center deviation.
Background technology
The High-Power Microwave coaxial component is very high to the requirement of its centre deviation, if centre deviation is bigger, will cause severe bad influence to working performance of devices.Conventional High-Power Microwave coaxial component structure generally is made up of inner wire and urceolus, and inner wire generally places urceolus inside.Inner wire and urceolus are about central axis rotation symmetry.But, often cause the centre deviation of device bigger owing to have various error components in device fabrication and the assembling process.For the centre deviation that guarantees device error, can measure and two processes of calibrate realize by centre deviation less than regulation.This just needs an instrument with certain measuring accuracy to come the size of measuring center deviation, for the calibrate process provides the calibration foundation, with the centre deviation that guarantees device in the error range that allows.Traditional visual method can not satisfy the requirement of error precision, vernier caliper or pit gauge generally are difficult to stretch into the inner directly measurement of urceolus, though three-coordinates measuring machine can be measured the centre deviation of coaxial component, but be difficult to be used, and volume big (about about 1m), (be generally several ten thousand yuan and arrive hundreds of thousands unit) costs an arm and a leg with the operation platform of microwave tube.For the centre deviation that guarantees device assembling error less than regulation, for the calibrate process provides the calibration foundation, develop that centre deviation, the measuring error that can measure common coaxial component is no more than 0.1mm, cost coaxial component centre deviation measuring instrument low, easy and simple to handle becomes the major issue that those skilled in the art pay close attention to.
Summary of the invention
The technical problem to be solved in the present invention is: provide centre deviation, the measuring error that can measure common coaxial component to be no more than 0.1mm, cost coaxial component centre deviation measuring instrument low, easy and simple to handle.
Concrete technical scheme is: the present invention has the circular metal base of four radial support arms, four sounding rods, four springs, four fixed bars and 8 screws by one and forms.
The inside radius R0 of metal base is identical with the external radius of coaxial component inner wire to be measured, and can be in the conductor nested.Metal base adds and cuts out with wire cutting machine man-hour or mill out four radial support arms with milling machine, and the sway brace radius is R, and R is less than the internal diameter R1 of coaxial component urceolus to be measured.Fixed bar is the cylindrical metal bar, and its length L 3 satisfies L3＜(R-R0)/2.Sounding rod is the cylindrical metal bar, and length is L1, and R1-R＜L1＜R-R0-L3.Four radial support arms are along evenly distribution and structure and size are identical all around, a circular hole is bored on the top of sway brace, and Circularhole diameter satisfies fixed bar, spring, sounding rod and all can insert and get final product, and the degree of depth is h, and L1+L3＜h＜L1+L2+L3+R-R1, L2 are the drift of spring.Sway brace circular hole side faces at both ends is bored a threaded hole respectively, and threaded hole and sway brace circular hole connect, and the parallel axes of threaded hole is in the central axis of metal base.One end of sounding rod and fixed bar respectively has a shallow slot that can be connected with spring, and spring is connected sounding rod by shallow slot with fixed bar.Fixed bar and sounding rod that four groups of springs are connecting take fixed bar to insert respectively in the circular hole on four sway brace tops in interior, sounding rod mode outside, and 8 screws hold out against fixed bar and sounding rod by threaded hole.
The process that adopts the present invention to measure the coaxial component centre deviation is:
The first step all is pressed into the sounding rod on four sway braces in the circular hole, and is screwed.
Second step, metal base is in the conductor nested, unclamp the screw that compresses sounding rod on four sway braces, make sounding rod under the effect of spring, eject circular hole and hold out against the inwall of urceolus.
The 3rd step, the screw that compresses sounding rod on four sway braces is tightened once more, sounding rod is fixed.
The 4th step, the measuring instrument metal base is taken out from inner wire, measure the length that the four measuring bar ejects in the circular hole on sway brace top respectively with pit gauge or vernier caliper.The difference of the length that two sounding rods that are located along the same line eject in the circular hole separately is the centre deviation on this rectilinear direction.The four measuring bar is positioned on orthogonal two straight lines, then can record the centre deviation on orthogonal two straight lines, thus can determine the centre deviation of this coaxial component.
The measuring error of this measuring instrument mainly contains two sources.Gap error when at first to be measuring instrument nested with inner wire 1, this depends on the precision of machining.Add man-hour, the inside radius R0 of metal base joins car according to the external radius R0 of the inner wire of coaxial component to be measured, and the error control that can make machining is in 0.05mm.Next is the reading error of pit gauge, is generally less than 0.02mm.Consider in the both sides of measuring instrument correspondence and carry out twice measurement, so the reading error of pit gauge accumulative total is no more than 0.04mm.Therefore, the total measuring error of measuring instrument is no more than 0.09mm, can satisfy the measurement needs of the desired rigging error of general coaxial component less than 0.3mm.
Adopt the present invention can reach following technique effect:
(1) the present invention can measure the centre deviation of conventional coaxial component, and measuring error is less than 0.1mm, and easy and simple to handle;
(2) the present invention is simple in structure, with low cost.
Description of drawings
Fig. 1 is the sectional view of conventional coaxial component;
Fig. 2 is a coaxial component centre deviation measuring instrument forward sectional view;
Fig. 3 is a coaxial component centre deviation measuring instrument measuring principle synoptic diagram of the present invention.
Embodiment
Fig. 1 is the sectional view of conventional coaxial component.Conventional coaxial component structure generally is made up of inner wire 1 and urceolus 2, and inner wire 1 and urceolus 2 are about axis rotation symmetry.R0 is the external radius of inner wire among the figure, and R1 is the inside radius of urceolus.
Fig. 2 is a coaxial component centre deviation measuring instrument forward sectional view of the present invention.Coaxial component centre deviation measuring instrument is made up of a circular metal base with four radial support arms 3, four 4,8 screws of sounding rod 5, four springs 6 and four fixed bars 7.The inside radius R0 of metal base 3 is identical with the external radius of coaxial component inner wire 1 to be measured, and can be nested on the inner wire 1.Metal base 3 adds and cuts out with wire cutting machine man-hour or mill out four radial support arms with milling machine, and radius is R (R＜R1).Fixed bar 7 is cylindrical metal bars, and length is L3, L3＜(R-R0)/2.Sounding rod 4 is cylindrical metal bars, and length is L1, and R1-R＜L1＜R-R0-L3.Four radial support arms are along evenly distribution and structure and size are identical all around, a circular hole is bored on the top of sway brace, and Circularhole diameter satisfies fixed bar, spring, sounding rod and all can insert and get final product, and the degree of depth is h, and L1+L3＜h＜L1+L2+L3+R-R1, L2 are the drift of spring 6.Sway brace circular hole side faces at both ends is bored a threaded hole respectively, and threaded hole and sway brace circular hole connect, and the parallel axes of threaded hole is in the central axis of metal base.One end of sounding rod 4 and fixed bar 7 respectively has a shallow slot that can be connected with spring 6, spring 6 is connected sounding rod 4 by shallow slot with fixed bar 7, fixed bar and sounding rod that four groups of springs are connecting take fixed bar 7 to insert respectively in the circular hole on four sway brace tops in interior, sounding rod 4 mode outside, hold out against fixed bar 7 and sounding rod 4 with 8 screws by threaded hole.
Fig. 3 adopts coaxial component centre deviation measuring instrument of the present invention to measure the principle schematic of coaxial component centre deviation.Measuring method is as follows:
The first step all is pressed into the sounding rod 4 on four sway braces of metal base 3 in the circular hole, and fixing with screw 5, in order to avoid run into urceolus 2 when installing and measuring instrument.
Second step was nested in measuring instrument metal base 3 on the inner wire 1, then, unclamped the screw 5 that compresses sounding rod 4 on four sway braces, made sounding rod 4 eject circular hole under the effect of spring 6 and held out against the inwall of urceolus 2.
The 3rd step, the screw 5 that compresses sounding rod 4 on four sway braces is tightened once more, sounding rod 4 is fixing.
The 4th step, measuring instrument metal base 3 is taken out from inner wire 1, measure the length that four measuring bar 4 ejects in the circular hole on sway brace top respectively with pit gauge (or vernier caliper), the difference of the length that two sounding rods 4 that are located along the same line eject in the circular hole separately is the centre deviation on this rectilinear direction.Four measuring bar 4 is positioned on orthogonal two straight lines, then can record the centre deviation on orthogonal two straight lines, thus can determine the centre deviation of this coaxial component.
Claims (1)
1. coaxial component centre deviation measuring instrument, it is characterized in that it is made up of circular metal base (3), four sounding rods (4), four springs (6), four fixed bars (7) and 8 screws (5) with four radial support arms: the inside radius R0 of metal base (3) is identical with the external radius of coaxial component inner wire to be measured (1), metal base (3) adds and cuts out with wire cutting machine man-hour or mill out four radial support arms with milling machine, the sway brace radius is R, and R is less than the internal diameter R1 of coaxial component urceolus to be measured (2); Fixed bar (7) is the cylindrical metal bar, and its length L 3 satisfies L3＜(R-R0)/2; Sounding rod (4) is the cylindrical metal bar, and length is L1, and R1-R＜L1＜R-R0-L3; Four radial support arms are along evenly distribution and structure and size are identical all around; A circular hole is bored on the top of each sway brace, and Circularhole diameter satisfies fixed bar (7), spring (6), sounding rod (4) and all can insert, and the degree of depth is h, and L1+L3＜h＜L1+L2+L3+R-R1, and L2 is the drift of spring (6); Each sway brace circular hole side faces at both ends is bored a threaded hole respectively, and threaded hole and sway brace circular hole connect, and the parallel axes of threaded hole is in the central axis of metal base (3); One end of sounding rod (4) and fixed bar (7) respectively has a shallow slot, and spring (6) is connected sounding rod (4) by shallow slot with fixed bar (7); Fixed bar and sounding rod that four groups of springs are connecting take fixed bar (7) to insert respectively in the circular hole on four sway brace tops in interior, sounding rod (4) mode outside, and 8 screws (5) hold out against fixed bar (7) and sounding rod (4) by threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101926515A CN100498198C (en) | 2007-12-18 | 2007-12-18 | Coaxial component center deviation measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101926515A CN100498198C (en) | 2007-12-18 | 2007-12-18 | Coaxial component center deviation measuring apparatus |
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| Publication Number | Publication Date |
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| CN101182985A CN101182985A (en) | 2008-05-21 |
| CN100498198C true CN100498198C (en) | 2009-06-10 |
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| CNB2007101926515A Expired - Fee Related CN100498198C (en) | 2007-12-18 | 2007-12-18 | Coaxial component center deviation measuring apparatus |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101799265B (en) * | 2009-09-11 | 2011-11-09 | 秦山核电有限公司 | Underwater measuring method and device for mounting position degree of irradiation monitoring pipe |
| CN102564367A (en) * | 2010-12-30 | 2012-07-11 | 中国第一汽车集团公司 | Variable multi-point locating cylinder barrel deformation testing clamp and testing method |
| CN103234430A (en) * | 2013-04-15 | 2013-08-07 | 启东万惠机械制造有限公司 | Shape and position tolerance detecting device for ring gears |
| CN104776786B (en) * | 2014-01-15 | 2017-06-06 | 宝山钢铁股份有限公司 | The detection method of clipping steel pipe market mechanism machine center deviation |
| CN103868684B (en) * | 2014-03-17 | 2019-03-05 | 浙江富杰德汽车系统有限公司 | A kind of fatigue experimental device of VVT engine piston |
| CN105014145B (en) * | 2015-05-27 | 2017-03-22 | 济南华汉电气科技有限公司 | Detection device for pipe fitting cutting radial error |
| CN104930958A (en) * | 2015-06-23 | 2015-09-23 | 南车戚墅堰机车有限公司 | Motor shaft extension butt joint coaxiality universal detector |
| CN105333781A (en) * | 2015-11-10 | 2016-02-17 | 苏州天沃科技股份有限公司 | Gasifier four-burner connection pipe mounting position detection tool |
| CN106197229B (en) * | 2016-07-15 | 2018-08-31 | 兰州兰石重型装备股份有限公司 | The measurement method of minor diameter tankage abutted flange concentricity |
| CN110823076B (en) * | 2019-12-20 | 2021-05-14 | 宁波奥克斯电气股份有限公司 | Concentricity detection device and detection method thereof |
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2007
- 2007-12-18 CN CNB2007101926515A patent/CN100498198C/en not_active Expired - Fee Related
Non-Patent Citations (3)
| Title |
|---|
| 同轴度的测量与校准. 徐兵.机械制造，第43卷第491期. 2005 * |
| 测量内齿节圆与外圆同轴度的专用量具. 赵晓斌等.煤炭技术，第25卷第4期. 2006 * |
| 轴销组合同轴度的检测工具——由机械检测改进为机—电检测. 胡晓等.机械工人（冷加工），第8期. 2000 * |
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| CN101182985A (en) | 2008-05-21 |
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