CN108801188A - The measurement tooling and measurement method of telemetering module centroid position on bullet - Google Patents
The measurement tooling and measurement method of telemetering module centroid position on bullet Download PDFInfo
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- CN108801188A CN108801188A CN201810670269.9A CN201810670269A CN108801188A CN 108801188 A CN108801188 A CN 108801188A CN 201810670269 A CN201810670269 A CN 201810670269A CN 108801188 A CN108801188 A CN 108801188A
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- tooling
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- closes
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- 238000000691 measurement method Methods 0.000 title claims description 12
- 230000002093 peripheral Effects 0.000 claims abstract description 3
- 238000005303 weighing Methods 0.000 claims description 6
- 240000006028 Sambucus nigra Species 0.000 claims description 3
- 238000000034 methods Methods 0.000 abstract description 4
- 239000000463 materials Substances 0.000 abstract description 3
- 230000000875 corresponding Effects 0.000 description 4
- 238000010586 diagrams Methods 0.000 description 3
- 239000000789 fasteners Substances 0.000 description 2
- 239000000725 suspensions Substances 0.000 description 2
- 229910000838 Al alloys Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering processes Methods 0.000 description 1
- 239000000686 essences Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007769 metal materials Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups
Abstract
Description
Technical field
The present invention relates to telemetering modules on a kind of bullet, more particularly to the measurement tooling of telemetering module centroid position and measurement side on bullet Method.
Background technology
Telemetering module product centroid measurement mainly takes suspension method to measure on bullet at present, dynamic balance instrument cooperation special tooling measures Mode and the method for " 2 dynamometry fixed longitudinal barycenter " measure：
Suspension method measurement method is simple, but low precision, and is not suitable for the larger bay section of quality；
Dynamic balance instrument coordinates the method that special tooling measures, high certainty of measurement, but equipment is wasted one's talent on a petty job, and is wanted to operation Height, time of measuring length, each redesign toolings of bay section needs for different dimensions are asked, it is time-consuming and laborious；
Tooling is yoke used by " the fixed longitudinal barycenter of 2 dynamometry " method, is suitable for whole bullet and measures, for single When bay section measures, relative error is larger, measurement result uncertainty is high.
In conjunction with case above, there is presently no a kind of modes can meet convenience, accurately measures telemetering module product matter on bullet The demand of heart position.
Invention content
The purpose of the present invention is to provide a kind of measurement tooling of telemetering module centroid position on bullet and measurement methods, to solve There are no a kind of mode not only high certainty of measurement but also telemeterings easy to operate but also suitable for Multiple Type specification in the prior art The technical problem of cabin product etc..
To solve the above-mentioned problems, the present invention provides a kind of measurement toolings of telemetering module centroid position on bullet, including can The fore-stock and after-poppet placed for being tested telemetering module surround one by the connection of two crossbeams between the fore-stock and after-poppet and enclose The front end face of frame, the fore-stock is fixedly connected by an at least pillar with one grade of item.
Preferably, the upper surface of fore-stock and after-poppet opens up the arc notch that can place telemetering module, the fore-stock It is overlapped in radial direction and short transverse with the center of circle of the arc notch of after-poppet.
Preferably, the bottom of the fore-stock and after-poppet is up-side down triangle.
Preferably, the inner face of the shelves item is less than or equal to the length of tested minimum telemetering module to the distance of the after-poppet Degree.
Preferably, the length of the pillar is more than or equal to tested telemetering module front end face to the distance of parting surface.
Preferably, further including scale one and scale two, when measuring, the fore-stock is placed on the scale one, is propped up after described Frame is placed on the scale two.
The present invention also provides a kind of measurement methods of telemetering module centroid position on bullet, including following steps：
S1, survey calculation measure the centroid position of tooling；
S2, survey calculation measure the centroid position of tooling and telemetering module entirety；
S3, the centroid position for calculating telemetering module.
Preferably, in step sl, the fore-stock for measuring tooling and after-poppet are individually placed on scale one and scale two, it is described The top of the up-side down triangle of fore-stock and after-poppet bottom is located at the weighing centre of area position of two scales；
Only measuring the reading that tooling is placed on two scales is respectively：
The reading of scale one：mWork1
The reading of scale two：mWork2
Then measure tooling quality mWork：mWork=mWork1+mWork2
Centroid position is according to formula X0=(1-P/G) × l+b (1)
It calculates,
In formula：X0--- barycenter longitudinal coordinate, mm；
The force value that P --- force-detecting position measures, N；
G --- product total force, N；
L --- force-detecting position is to the distance of supporting point, mm；
B --- dynamometry point coordinates, mm；
Scale two is regarded as fulcrum, then
PWorkThe reading of=scale one, P=mWork1×g
GWork=mWork× g=(mWork1+mWork2)×g
B is distance of the shelves inner face to fore-stock center
L is distance of the fore-stock center to after-poppet center
Therefore, the centroid position L of tooling is calculated by formula (1)Work=(1-PWork/GWork)×l+b。
Preferably, in step s 2, telemetering module is placed in tooling, the front end face of telemetering module is in the shelves item End face, tooling and telemetering module weigh to obtain two group number-readings together：
Tooling and telemetering module scale together, the reading of scale one：mIt closes1
Tooling and telemetering module scale together, the reading of scale two：mIt closes2
The then gross mass m of tooling and telemetering moduleIt closes=mIt closes1+mIt closes2
According to formula (1), scale two is regarded as fulcrum, then：
PIt closesOne reading of=scale=mIt closes1×g
GIt closes=scale one plus the reading=(m of scale twoIt closes1+mIt closes2)×g
The whole centroid position of tooling and telemetering module is LIt closes=(1-PIt closes/GIt closes)×l+b。
Preferably, in step s3, calculating the quality m of telemetering moduleCabin=mIt closes-mWork
According to equalising torque formula：
MIt closes=MWork+MCabin
mIt closes×g×LIt closes=mWork×g×LWork+mCabin×g×LCabin
Substitute into mIt closes、LIt closes、mWork、LWorkAnd mCabin, the centroid position L of telemetering module is calculatedCabinNumerical value.
Compared with prior art, there are following technique effects by the present invention：
The present invention provides the measurement tooling and measurement method of telemetering module centroid position on a kind of bullet, is set by rational size Meter and structure type, are convenient for measuring and calculate centroid position.It is corresponding by weighing after telemetering module is placed in tooling when measurement Value can calculate telemetering module centroid position.The Fixture Design method is simple, light structure, be easily assembled, strong applicability, side Portable belt and use, measurement method simplicity, high certainty of measurement, eliminate loaded down with trivial details manpower and materials, improve the efficiency of measuring and calculating.It should Tooling can be applied to the centroid measurement of other shapes rule bay section on telemetering module product and bullet on the bullet of all kinds of regular shapes.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment Attached drawing be briefly described, it is therefore apparent that drawings in the following description are only some embodiments of the invention, for ability For field technique personnel, without creative efforts, other drawings may also be obtained based on these drawings.It is attached In figure：
Fig. 1 is the structural schematic diagram of the measurement tooling of telemetering module centroid position on bullet of the present invention；
Fig. 2 is the structural representation for measuring tooling centroid position on bullet of the present invention in the measurement method of telemetering module centroid position Figure；
Fig. 3 is to measure tooling and telemetering module entirety centroid position on bullet of the present invention in the measurement method of telemetering module centroid position Structural schematic diagram；
Fig. 4 is the structure for measuring telemetering module entirety centroid position on bullet of the present invention in the measurement method of telemetering module centroid position Schematic diagram.
Specific implementation mode
The measurement tooling to telemetering module centroid position on bullet provided by the invention and measurement side below with reference to Fig. 1 to Fig. 4 Method is described in detail, and the present embodiment is being implemented down based on the technical solution of the present invention, gives detailed implementation Mode and specific operating process, but protection scope of the present invention is not limited to following embodiments, and those skilled in the art are not In the range of changing spirit of that invention and content, can it be modified and be polished.
Referring to FIG. 1, on a kind of bullet telemetering module centroid position measurement tooling, include before being placed for tested telemetering module Holder 1 and after-poppet 2, fore-stock 1 are located at tooling front, and after-poppet 2 is located at tooling rear portion, the fore-stock 1 and after-poppet 2 it Between a peripheral frame surrounded by the connection of two crossbeams 3, the front end face of the fore-stock 1 passes through an at least pillar 4 and fixes company with one grade of item 5 It connects.
In the present embodiment, the fore-stock 1 and after-poppet 2 are T-shaped structure, and two crossbeams 3 are symmetrical structure, point Not Wei Yu tooling the left and right sides.
Further, the upper surface of fore-stock 1 opens up the arc notch that can place telemetering module, has a diameter larger than equal to maximum Tested telemetering module diameter.The left and right sides of fore-stock 1 is equipped with threaded hole, for being fixedly connected with crossbeam 3.Fore-stock 1 Front end face is set there are two threaded hole, for installing two pillars 4.
After-poppet 2 and the structure of fore-stock 1 are substantially similar：The upper surface of after-poppet 2 opens up the arc that can place telemetering module V notch v has a diameter larger than the diameter equal to maximum tested telemetering module.The left and right sides of after-poppet 2 is equipped with threaded hole, is used for It is fixedly connected with crossbeam 3.
After tooling installs, the center location of 2 arc notch of fore-stock 1 and after-poppet is answered in radial direction and short transverse It overlaps, can determine the size according to tested maximum telemetering module outer diameter.
Fore-stock 1 and after-poppet 2 need to generally avoid antenna or other protrusions with nacelle contact position, and should be nacelle ontology can Support Position.
As a kind of embodiment, the bottom of fore-stock 1 and after-poppet 2 is up-side down triangle, and the top of up-side down triangle is whole The contact surface of a tooling and table top, the wide 1mm of the contact surface.
Two 3 mutually symmetrical structures of crossbeam, corresponding position is equipped with through-hole on crossbeam 3, is used for and fore-stock 1,2 phase of after-poppet It is fixed.Diameter of the distance between two crossbeams 3 close to tested telemetering module.Pillar 4 is cylinder, and the length of pillar 4 is more than quilt Distance of the survey telemetering module front end face to parting surface.The both ends of pillar 4 are designed with threaded hole.Before pillar 4 is installed on fore-stock 1 Portion is fastened using dimension fastener.
Shelves item 5 is slab construction, and the distance of 5 inner face of shelves item to 2 rear end face of after-poppet is less than the length of tested telemetering module, And ensure that telemetering module is positioned over the stabilization of rear center of gravity in tooling.5 corresponding position of shelves item is equipped with through-hole, is installed on 4 front of pillar, makes It is fixed with respective fastener and 4 phase of pillar.
The material of tooling generally selects aluminium alloy or color density is smaller, the higher metal material of intensity.
Referring to FIG. 2, when being measured using this tooling, two identical scales (being respectively scale one and scale two) are needed, are protected Card tooling places the highly consistent of latter two fulcrum, and is located at the weighing centre of area position of two scales.This tooling passes through Primary put weighs the reading that can obtain force-detecting position simultaneously and entire whole quality, improves working efficiency.The weighing essence of scale Degree is higher, and the centroid position precision measured is also higher, the range of two platform balances and more than tested telemetering module product quality and work The sum of packing quality.
Corresponding to the structure of above-mentioned measurement tooling, the present invention also provides a kind of measurement sides of telemetering module centroid position on bullet Method, steps are as follows for specific measurement and calculating：
The centroid position of step 1 survey calculation test fixture
(fore-stock for measuring tooling and after-poppet are individually placed to one He of scale when referring to FIG. 2, tooling being placed in above scale On scale two), it should ensure that the contact surface of tooling and scale, the i.e. top end face of the bottom up-side down triangle of fore-stock and after-poppet are located at The weighing centre of area position of two scales；
Only measuring the reading that tooling is placed on two scales is respectively：
The reading of scale one：mWork1
The reading of scale two：mWork2
Then measure tooling quality mWork：mWork=mWork1+mWork2
Centroid position is according to formula X0=(1-P/G) × l+b (1)
It calculates,
In formula：X0--- barycenter longitudinal coordinate, mm；
The force value that P --- force-detecting position measures, N；
G --- product total force, N；
L --- force-detecting position is to the distance of supporting point, mm；
B --- dynamometry point coordinates, mm；
Scale two is regarded as fulcrum, then
PWorkThe reading of=scale one, P=mWork1×g
GWork=mWork× g=(mWork1+mWork2)×g
Numerical value l and b are obtained by measuring, b is distance of the shelves inner face to fore-stock center, and l is that fore-stock center is arrived The distance at after-poppet center,
Therefore, the centroid position L of tooling is calculated by formula (1)Work=(1-PWork/GWork)×l+b。
S2, survey calculation measure the centroid position of tooling and telemetering module entirety
Referring to FIG. 3, in step s 2, telemetering module is placed in tooling, the front end face of telemetering module is close to the shelves item Inner face, and tooling and cabin is kept to stablize, tooling and telemetering module weigh to obtain two group number-readings together：
Tooling and telemetering module scale together, the reading of scale one：mIt closes1
Tooling and telemetering module scale together, the reading of scale two：mIt closes2
The then gross mass m of tooling and telemetering moduleIt closes=mIt closes1+mIt closes2
According to formula (1), scale two is regarded as fulcrum, then：
PIt closesOne reading of=scale=mIt closes1×g
GIt closes=scale one plus the reading=(m of scale twoIt closes1+mIt closes2)×g
L and b is the numerical value measured in step S1,
The whole centroid position of tooling and telemetering module is LIt closes=(1-PIt closes/GIt closes)×l+b。
S3, the centroid position for calculating telemetering module
Referring to FIG. 4, in step s3, calculating the quality m of telemetering moduleCabin=mIt closes-mWork
According to equalising torque formula：
MIt closes=MWork+MCabin
mIt closes×g×LIt closes=mWork×g×LWork+mCabin×g×LCabin, substitute into mIt closes、LIt closes、mWork、LWorkAnd mCabin, the matter of telemetering module is calculated Heart position LCabinNumerical value.
Disclosed above is only the specific embodiment of the application, and however, this application is not limited to this, any this field Technical staff can think variation, should all fall in the protection domain of the application.
Claims (10)
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| CN201810670269.9A CN108801188A (en) | 2018-06-26 | 2018-06-26 | The measurement tooling and measurement method of telemetering module centroid position on bullet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109341950A (en) * | 2018-12-11 | 2019-02-15 | 上海航天精密机械研究所 | A kind of inclined measurement method of cone columnar member mass center matter |
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| CN204903089U (en) * | 2015-07-21 | 2015-12-23 | 长春理工大学 | Eccentric test fixture of non - regular solid of revolution barycenter with adjustable |
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