CN102564693A - High-precision suspension positioning structure and method thereof - Google Patents
High-precision suspension positioning structure and method thereof Download PDFInfo
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- CN102564693A CN102564693A CN2012100243644A CN201210024364A CN102564693A CN 102564693 A CN102564693 A CN 102564693A CN 2012100243644 A CN2012100243644 A CN 2012100243644A CN 201210024364 A CN201210024364 A CN 201210024364A CN 102564693 A CN102564693 A CN 102564693A
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Abstract
The invention discloses a high-precision suspension positioning structure and a method thereof. The positioning structure preferably comprises: an installation rack (1), three positioning columns (2), a standard mass block (3) and an installation disc (4). The positioning method preferably comprises the following steps that: a circular hole is arranged at a center of the installation rack (1); the three positioning columns (2) are uniformly distributed around the centre circular hole of the installation rack (1); the standard mass block (3) are made into a cylinder shape with a flange and the standard mass block can pass through the circular hole of the installation rack (1) so as to connect with the installation disc (4) through a thread; the installation disc (4) is provided with three tapered blind holes which are cooperated with the three positioning columns (2). According to the invention, through improving the structure of a suspension mode, methods of three point positioning and tapered automatic centering are used. In a traditional suspension mode, the standard mass block can be interfered by an external force and the positioning is difficult to perform. By using the method and structure of the invention, the above problems can be solved. Limitation of a dynamic calibration device suspension mode of a force transducer can be broken. Simultaneously, the suspension structure is simple, operation is convenient and cost is low.
Description
Technical field
The present invention be more particularly directed to a kind of suspension location structure and method of force transducer dynamic perfromance caliberating device.
Background technology
The dynamic force caliberating device is mainly used in the dynamic property of force transducer and demarcates.Owing to the influence of environment for use, improper, overload and transportation are installed and store the change that improper meeting causes the force transducer characteristic, the sensibility in practice of force transducer and its nominal value generation difference.In kinetic measurement, the measuring error of force transducer is the several times of acceleration transducer normally, be to guarantee measuring accuracy, and force transducer must carry out dynamic calibration, and require in its dynamic calibration process error as far as possible little.Because the absolute magnitude of power directly obtains very difficulty; And the absolute magnitude of acceleration can comparatively accurately and easily measure through laser vibration measurer or acceleration of gravity; So; It is the basis through measuring acceleration mostly that the dynamic perfromance of force transducer is demarcated, and utilizes Newton second law to carry out indirectly again.Main error source in this link has: standard error, voltage signal sampling error, standard quality error, stochastic error etc. is installed, wherein the bearing accuracy of dynamic calibration apparatus and the damping that produces because of the location are vital to the influence of dynamic calibration precision.
The force transducer dynamic calibration apparatus adopts usually in the market has suspension and does not have two kinds of mounting meanss of suspension.Do not have suspension install be with the standard quality piece with directly be pressed on the vibrator after sensor links to each other, generally be applicable to the force transducer dynamic calibration of less range.Consult Fig. 1 a-1b, it is to have hung the standard quality piece with long fine rule or soft rubber rope that suspension is installed, and the central axis and the exciting force application point that make standard quality piece and force transducer are point-blank.Because receive the pulling force or the vibration of suspension cord; The consistance of this mounting means is poor; Precision is low; Its main cause has 2 points: 1) the fine rule rope of suspension standard quality piece can make mass produce deflection, causes very big difficulty for the centering of vibrator, and the vibrator push rod has been applied extra deflecting torque; 2) timing signal, fine rule rope produce constraint to the motion of mass inevitably, and the fine rule rope can follow mass generation thermal agitation, have largely influenced measuring accuracy.In addition,, also can directly add guiding mechanism, consult Fig. 1 c, but the energy that this locator meams frictional damping consumes is uncontrollable, directly influence the repeatability of rating test the standard quality piece for avoiding above-mentioned problem at 2.
Summary of the invention
The objective of the invention is to propose a kind of high precision suspension location structure and method, it can make the dynamic calibration of force transducer more accurate with the manufacturing cost and use cost of minimum, reliably, thereby overcomes deficiency of the prior art.
For realizing the foregoing invention purpose, the present invention has adopted following technical scheme:
A kind of high precision suspension localization method is characterized in that this method is: offer a through hole at an erecting frame center; The coaxial standard quality piece that can vertically move freely that is provided with in this through hole again; And this standard quality piece and the mounting disc that is arranged on this erecting frame top be rigidly connected, simultaneously, on the erecting frame upper surface, be symmetrical set supporting device around this through hole; Mounting disc is held up the level of, thereby the standard quality piece is suspended on this erecting frame.
A kind of high precision suspension location structure; Comprise an erecting frame; A through hole is offered at said erecting frame center, the coaxial standard quality piece that can vertically move freely that is provided with in the said through hole, and said standard quality piece is rigidly connected with the mounting disc that is arranged on this erecting frame top; And said erecting frame also is symmetrical set the supporting device that is used to hold up the level of this mounting disc around this through hole on the upper surface.
Preferably, said standard quality piece is the cylindrical shape member, and said through hole is preferably circular hole, and said through-hole diameter overgauge mass external diameter makes contactless between the two.
Particularly preferred, said standard quality piece is the flanged (FLGD) cylindrical shape member of an end, and said right cylinder external diameter is less than through-hole diameter, and flange outer diameter is greater than through-hole diameter.
As preferred version, said supporting device comprises: be symmetricly set on the plural reference column on the erecting frame upper surface around this through hole, and, be arranged on the plural blind hole that cooperates with said reference column on the mounting disc lower surface.
As more preferred scheme, said erecting frame upper surface is around high reference columns such as three of the even distributions of this through hole, and each reference column upper end has bulb; Said blind hole is a tapered blind hole.
Further, said supporting device edge evenly distributes with the circular trace of the concentric setting of this through hole, and this circular trace diameter is greater than this through-hole diameter, but less than the mounting disc external diameter.
Said standard quality piece upper end can be fixedly connected through screwing tight structure with mounting disc.
As a kind of preferred embodiment; The present invention is when using; Can at first reference column be installed by desired location, and reliable locking, the center hole of erecting frame again the standard quality piece is passed; Be connected firmly with mounting disc, three tapered blind hole of mounting disc lower surface aimed at placement get final product with three reference columns.
Among the present invention since between the center hole of erecting frame and the standard quality piece gap enough big; Contactless between standard quality piece and the erecting frame; Do not produce friction force, the standard quality piece is by the bulb location on three tapered blind hole that are provided with in the mounting disc that is attached thereto and three reference columns.Confirm a face at 3, and the locator meams of taper and bulb there are automatic centering function, good positioning consistency; Accuracy is high; The bearing accuracy of standard quality piece is easy to guarantee, thereby the precision that has solved existing suspension mounting means existence is low, problems such as poor repeatability.
Therefore, compared with prior art, the invention has the advantages that: the structure through to hang improves; Particularly adopt the method for three-point fix and taper automatic centering, overcome standard mass in traditional hang and received that external force is disturbed, the problem of location difficulty, broken the limitation of force transducer dynamic calibration apparatus hang simultaneously; Simultaneously; Apparatus of the present invention are simple in structure, and are easy to operate, with low cost.
Description of drawings
Fig. 1 a-1c is respectively the location structure synoptic diagram of existing force transducer dynamic calibration apparatus;
Fig. 2 is the location structure synoptic diagram of force transducer dynamic calibration apparatus in the present invention's one preferred embodiment;
Fig. 3 is one of application state synoptic diagram of the present invention's one preferred embodiment;
Fig. 4 be the present invention's one preferred embodiment the application state synoptic diagram two;
Each assembly and Reference numeral thereof are respectively among the figure: 1, erecting frame; 2, standard quality piece; 3, reference column; 4, mounting disc; 5, standard acceler; 6, force transducer to be calibrated; 7, vibrator; 8, support; 9, guide piece; 10, hoisting gear; 11, anvil block; 12, cotton rope.
Embodiment
Below in conjunction with an accompanying drawing and a preferred embodiment technical scheme of the present invention is described further.
Consult Fig. 2, the high precision of present embodiment suspension location structure comprises an erecting frame 1, standard quality piece 2, three reference columns 3 and mounting discs 4.Circular hole is opened at said erecting frame 1 center, and three reference columns 2 are distributed on circular, and standard quality piece 3 is processed flanged (FLGD) cylindrical shape; Can from the circular hole of erecting frame 1, pass; Be connected with mounting disc 4 through screw thread, open three tapered blind hole in the mounting disc 4, cooperate with three reference columns 2.
Consult Fig. 3; Erecting frame 1 is fixed on the support 8 in the present embodiment; Exciting force is provided by vibrator 7, and standard acceler 5 is fixed on standard quality piece 2 upper ends, and force transducer 6 to be calibrated is fixed on standard quality piece 2 lower ends (or piston head end of vibrator 7).During rating test, the piston of vibrator 7 moves upward, bump standard quality piece 2, and standard acceler 5 and force transducer 6 picked up signal to be calibrated are transferred to data analysis system respectively.By newton's second theorem; Be F=ma; Only need the acceleration signal of standard acceler 5 acquisitions and the quality of standard quality piece 2 are multiplied each other; Result who obtains and force transducer to be calibrated 6 obtain the force signal contrast, to confirm the dynamic characteristic parameter of force transducer 6 to be calibrated, accomplish one time rating test.
Consult Fig. 4, erecting frame 1 both sides install guide piece 9 additional in the present embodiment, and erecting frame 1 can slide at vertical direction with the standard quality piece 2 that hangs on it.During rating test; Erecting frame 1 rises to setting height by hoisting gear 10 and discharges; Erecting frame 1 slides along the guide piece 9 of both sides; Standard quality piece 2 and anvil block 11 bumps are installed in standard acceler 5 and force transducer 6 picked up signal to be calibrated on the standard quality piece 2, are transferred to data analysis system respectively.By newton's second theorem; Be F=ma, only need the acceleration signal of standard acceler 5 acquisitions and the quality of standard quality piece 2 are multiplied each other that result who obtains and force transducer to be calibrated 6 obtain the force signals contrast; To confirm the dynamic characteristic parameter of sensor 6 to be calibrated, accomplish one time rating test.
Need to prove; More than be merely the of the present invention one preferred sample of implementing; Those skilled in the art are via the present invention's enlightenment, also can expect all kinds of supporting devices that adopt this area to commonly see, as cooperate the supporting device of formation with reference column described in concentric these embodiment of replacement such as continuous or discrete projective structure that are provided with of aforementioned erecting frame central through hole and blind hole; And realize close with it function, but slightly poor effect; Same, those skilled in the art also can want that the various schemes of commonly seeing to this area are rigidly connected standard quality piece and mounting disc.
Therefore, above preferred embodiment only supplies to explain the present invention's usefulness, but not limitation of the present invention, the technician in relevant technologies field under the situation that does not break away from the spirit and scope of the present invention, has done various conversion or modification, all belongs to category of the present invention.
Claims (8)
1. a high precision hangs localization method; It is characterized in that; This method is: offer a through hole at an erecting frame (1) center, and the coaxial standard quality piece (2) that can vertically move freely that is provided with in this through hole again, and this standard quality piece (2) and the mounting disc (4) that is arranged on this erecting frame (1) top be rigidly connected; Simultaneously; On erecting frame (1) upper surface, be symmetrical set supporting device, mounting disc (4) held up the level of, thereby standard quality piece (2) is suspended on this erecting frame (1) around this through hole.
2. a high precision hangs location structure; It is characterized in that it comprises an erecting frame (1), a through hole is offered at said erecting frame (1) center; The coaxial standard quality piece (2) that can vertically move freely that is provided with in the said through hole; Said standard quality piece (2) is rigidly connected with the mounting disc (4) that is arranged on this erecting frame (1) top, and said erecting frame (1) also is symmetrical set the supporting device that is used to hold up the level of this mounting disc around this through hole on the upper surface.
3. high precision suspension location structure according to claim 2 is characterized in that said standard quality piece (2) is the cylindrical shape member, and, said through-hole diameter overgauge mass (2) external diameter.
4. according to claim 2 or 3 described high precision suspension location structures, it is characterized in that said standard quality piece (2) is the flanged (FLGD) cylindrical shape member of an end, and said right cylinder external diameter is less than through-hole diameter, flange outer diameter is greater than through-hole diameter.
5. high precision suspension location structure according to claim 2; It is characterized in that; Said supporting device comprises: be symmetricly set on the plural reference column (3) on erecting frame (1) upper surface around this through hole; And, be arranged on the plural blind hole that cooperates with said reference column (3) on mounting disc (4) lower surface.
6. high precision suspension location structure according to claim 5 is characterized in that said erecting frame (1) upper surface is around high reference columns (3) such as three of the even distributions of this through hole, and each reference column (3) upper end has bulb; Said blind hole is a tapered blind hole.
7. high precision according to claim 2 suspension location structure is characterized in that said supporting device edge evenly distributes with the circular trace of the concentric setting of this through hole, and this circular trace diameter is greater than this through-hole diameter, but less than mounting disc (4) external diameter.
8. high precision suspension location structure according to claim 2 is characterized in that said standard quality piece (2) upper end is fixedly connected through screwing tight structure with mounting disc (4).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210024364.4A CN102564693B (en) | 2012-02-03 | 2012-02-03 | High-precision suspension positioning structure and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210024364.4A CN102564693B (en) | 2012-02-03 | 2012-02-03 | High-precision suspension positioning structure and method thereof |
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| CN102564693A true CN102564693A (en) | 2012-07-11 |
| CN102564693B CN102564693B (en) | 2014-04-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827573A (en) * | 2018-04-18 | 2018-11-16 | 北京卫星环境工程研究所 | The calibration method of micro-vibration interference source test verifying system |
Citations (7)
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|---|---|---|---|---|
| CN2220638Y (en) * | 1994-12-28 | 1996-02-21 | 中国航空工业总公司第三○四研究所 | Device for making dynamic demarcation for force transducer |
| US20090255321A1 (en) * | 2008-04-15 | 2009-10-15 | Spirit Aerosystems, Inc. | Dynamic calibration assembly for a friction stir welding machine |
| CN101769938A (en) * | 2010-01-21 | 2010-07-07 | 中国科学院力学研究所 | Direct pulling type acceleration transducer based on fiber Bragg grating |
| CN101776511A (en) * | 2010-01-29 | 2010-07-14 | 天津大学 | Micro/nano film impact mechanical performance drop hammer measuring device |
| CN102095585A (en) * | 2010-12-07 | 2011-06-15 | 山东昌润科技有限公司 | Total thrust measurement device of attitude control engine |
| CN102252803A (en) * | 2011-04-29 | 2011-11-23 | 中国计量科学研究院 | Dynamic force calibrating device by laser absolute method |
| CN202433148U (en) * | 2012-02-03 | 2012-09-12 | 苏州世力源科技有限公司 | High-precision suspension positioning structure |
-
2012
- 2012-02-03 CN CN201210024364.4A patent/CN102564693B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2220638Y (en) * | 1994-12-28 | 1996-02-21 | 中国航空工业总公司第三○四研究所 | Device for making dynamic demarcation for force transducer |
| US20090255321A1 (en) * | 2008-04-15 | 2009-10-15 | Spirit Aerosystems, Inc. | Dynamic calibration assembly for a friction stir welding machine |
| CN101769938A (en) * | 2010-01-21 | 2010-07-07 | 中国科学院力学研究所 | Direct pulling type acceleration transducer based on fiber Bragg grating |
| CN101776511A (en) * | 2010-01-29 | 2010-07-14 | 天津大学 | Micro/nano film impact mechanical performance drop hammer measuring device |
| CN102095585A (en) * | 2010-12-07 | 2011-06-15 | 山东昌润科技有限公司 | Total thrust measurement device of attitude control engine |
| CN102252803A (en) * | 2011-04-29 | 2011-11-23 | 中国计量科学研究院 | Dynamic force calibrating device by laser absolute method |
| CN202433148U (en) * | 2012-02-03 | 2012-09-12 | 苏州世力源科技有限公司 | High-precision suspension positioning structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827573A (en) * | 2018-04-18 | 2018-11-16 | 北京卫星环境工程研究所 | The calibration method of micro-vibration interference source test verifying system |
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