CN200993574Y - Three-point linkage variable diameter spherical curvature measuring instrument - Google Patents
Three-point linkage variable diameter spherical curvature measuring instrument Download PDFInfo
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- CN200993574Y CN200993574Y CN 200620048584 CN200620048584U CN200993574Y CN 200993574 Y CN200993574 Y CN 200993574Y CN 200620048584 CN200620048584 CN 200620048584 CN 200620048584 U CN200620048584 U CN 200620048584U CN 200993574 Y CN200993574 Y CN 200993574Y
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- length
- workbench
- measuring
- mircrometer gauge
- sliding block
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Abstract
A three-point interlinked variable-diameter type spherical curvature measuring instrument for measuring curvature radii and arch profile tolerance of spherical elements comprises a raster ruler, a stepping motor, a SCM, a display, a ball screw, a slide rod, a guide rod, a slide block, a knighthead, a working platform and a pedestal. The utility model is characterized in real-time display of measuring results, continuous measuring, high measuring accuracy and rejection of duplication optical flat check.
Description
Technical field
The utility model relates to a kind of optical fine measuring instrument, especially a kind of three-point-linked variable footpath spheric curvature surveying instrument of sphere element surface radius-of-curvature.
Technical background
Need measure the radius-of-curvature with sphere component shape lens in a large number in the processing and manufacturing process of optics production, therefore, the radius of curvature measurement of sphere element is one of important topic of field tests.In the measuring method of utilizing the Mechanical Contact formula, generally adopt model, simple and easy sphere diameter mircrometer gauge or ring-form spherometer.Sphere element to different curvature radius needs supporting model usually, and fixedly use, can not continuous coverage.Ring-form spherometer also can only simply be measured, and its measuring method is mainly " bending high chord length " method, and its measuring principle mainly is to measure rise by the length mircrometer gauge earlier, and then calculates the radius-of-curvature of sphere element according to formula.This surveying instrument is carried out precision analysis as can be known, and measuring accuracy is that also the radius-of-curvature along with sphere element to be measured changes along with the change in radius of surveying ring.The method that solves this contradiction at present is to prepare the survey ring of many cover different radiis, use the survey ring of different radiuses at different sphere element radius-of-curvature to be measured and different measuring accuracy, because at first necessary rough estimate sphere element to be measured radius-of-curvature, make judgement then, select suitable survey ring for use, carefully survey again, and when measuring different sphere element radius-of-curvature to be measured, must select the survey ring of different radii for use, like this when facing the sphere element that varies in size, just load and unload and change the survey ring of different radii inevitably continually, but also introduced a lot of stochastic errors and personal error, greatly reduce measuring accuracy.Because the survey number of rings order of different radii is limited, generally have only the survey ring of a few cover radii fixuses, when therefore measuring sphere element to be measured, the measuring accuracy of sphere element to be measured that can not be all can both reach desired full accuracy.
Summary of the invention
The purpose of this utility model has provided a kind of three-point-linked variable footpath spheric curvature surveying instrument, this apparatus structure compactness, easy to use, automatically measure the instant playback of measurement result, continuous coverage, the measuring accuracy height, need not the optical flat duplication check, do not relate to the loading and unloading and the replacing of surveying ring, to reduce the influence that stochastic error and personal error are brought.
The utility model is achieved through the following technical solutions:
A kind of three-point-linked variable footpath spheric curvature surveying instrument is characterised in that its formation comprises; Workbench places on the base, by the swelling cover measuring staff retained part of length mircrometer gauge is vertically passed this workbench by the below of this workbench and fix, and the measuring staff of this length mircrometer gauge and continuous measuring contacts thereof can vertically slide up and down on workbench; On described workbench, intersection point with the axis of length mircrometer gauge is the groove of three strips of the radial even distribution of center equal angles, fix a guide rod in each groove respectively, the axis of every guide rod all passes through this center, wherein a guide rod is provided with an active sliding block, respectively is provided with one by movable slider on two guide rods in addition;
Fixedly stepper motor and ball-screw below the workbench, this stepper motor links to each other with ball-screw by shaft coupling, nut and active sliding block that this ball-screw is sheathed link together, vertically fix a support bar on this active sliding block, this active sliding block two slide bars that also are being connected, these two slide bars are linked to each other by movable slider with two respectively, and each is by each is vertically fixed a support bar on the movable slider, stepper motor drives ball-screw, thereby drives three support bar synchronous interactions on the slide block;
Axis with the measuring staff of described length mircrometer gauge overlaps with the intersection point of workbench described three support bars at center that the intersection point of described workbench constitutes;
Described single-chip microcomputer has two circuits: a data line connects stepper motor, rotates control signal to stepper motor output; Another data line connects length mircrometer gauge, receives the data-signal of length mircrometer gauge, and measurement data is handled or deposited storer in or be presented on the display through this single-chip microcomputer.
Utilize described three-point-linked variable footpath spheric curvature surveying instrument to measure the method for sphere curvature radius, it is characterized in that comprising the following steps:
1. prepare: connect data line and power lead, opening power, single-chip microcomputer, display and stepper motor, in display, open the Survey Software of measuring sphere curvature radius then, import the article diameters size of sphere element to be measured and the requirement of measuring accuracy to it, in the page of display, click START button then;
2. the automatic drive stepping motor of single-chip microcomputer is rotated, make active sliding block and moved to initial position by movable slider, single-chip microcomputer is changed to zero active sliding block with by the initial position of movable slider automatically, then the standard optical flat is put down gently on described support bar, and be changed to the reading of length mircrometer gauge zero, take off the standard optical flat after the zero setting, in the page of display, click the Next button then;
3. first rise is measured: sphere lighter element to be measured is placed on the support bar, the end bead of three support bars is all contacted with sphere element to be measured, at this moment single-chip microcomputer is controlled the length mircrometer gauge automatically and is measured first rise, the measured value h of first rise
1Automatically store in the single-chip microcomputer, sphere element to be measured is taken off from support bar, in the page of display, click the Next button then;
4. second rise measured: single-chip microcomputer more automatically drive stepping motor rotate, drive active sliding block and moved by movable slider, move a certain distance r when active sliding block with by movable slider
12After, single-chip microcomputer can store in the single-chip microcomputer active sliding block with by the displacement that movable slider is passed by automatically, when active sliding block with after by the movable slider stop motion, again sphere lighter element to be measured is put on the support bar, the end bead of three support bars is all contacted with sphere element to be measured, at this moment, single-chip microcomputer control length mircrometer gauge is automatically measured second rise, second rise measured value h
2Store in the single-chip microcomputer, sphere element to be measured is taken off from support bar, in the page of display, click the Next button then;
5. single-chip microcomputer is handled the data of storage automatically according to following formula:
In the formula: R is the surface curvature radius of sphere element to be measured,
h
1Be the rise of measuring for the first time,
h
2Be the rise of measuring for the second time,
T is the little radius of a ball in support bar end,
r
12Survey the relative shift of ring radius when being twice measurement,
For the sphere element to be measured of a spill, we use support bar end bead on the occasion of (+t); For the sphere element to be measured of a convex, we use support bar end bead negative value (t):
6. the surface curvature radius R of sphere element to be measured and the measuring accuracy of this moment are presented at automatically not on the device;
7. in the page of display, click at last " finishing " button, Single-chip Controlling stepper motor (1) counter-rotating, make active sliding block and by movable slider (12) to the original position, at this moment surveying instrument in a state of nature, measuring process is all over.
Carry out duplicate measurements and various product when measuring, then only need repeating step 3. to step 6..
A kind of three-point-linked variable footpath spheric curvature surveying instrument is characterized by it and is made up of length mircrometer gauge, stepper motor, single-chip microcomputer, display, ball-screw, slide bar, guide rod, slide block, support bar, workbench and base parts.
The utlity model has following advantage:
1. but the reducing of instrument is surveyed simply novelty of ring structure, and physical dimension is less, support bar bearing accuracy height.
2. in measuring process, the absolute distance at do not need to know for sure three support bars and its center only need be known the relative displacement of three support bars and the surface curvature radius that two rise measured values can calculate sphere element to be measured.
3. measuring process is automatic measuring process, and surveys ring radius (being the distance at support bar and its center) and can change continuously automatically, does not therefore exist to change and dismantle personal error and the stochastic error that ball brought, and has improved measuring accuracy and fiduciary level.
4. the surface curvature radius of sphere element to be measured and measuring accuracy can show on display simultaneously, and measurement result is instant playback.Can carry out repeatedly duplicate measurements and become precision measure same sphere element to be measured in addition.
Description of drawings
Fig. 1 is the schematic diagram of mechanism of 3 interlocks of the utility model three-point-linked variable footpath spheric curvature surveying instrument.
Fig. 2 is the front view of the utility model three-point-linked variable footpath spheric curvature surveying instrument physical construction.
Fig. 3 is the vertical view of the utility model three-point-linked variable footpath spheric curvature surveying instrument physical construction.
Fig. 4 is the upward view of the utility model three-point-linked variable footpath spheric curvature surveying instrument physical construction.
Fig. 5 is the front view of length mircrometer gauge of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model surveying instrument is described in further detail.
At first consult Fig. 1, a kind of three-point-linked variable footpath spheric curvature surveying instrument, it mainly contains single-chip microcomputer and display (not shown), length mircrometer gauge 9, stepper motor 1, ball-screw 6, slide bar 7, guide rod 10, active sliding block 4, is formed by movable slider 12, support bar 11, workbench 14 and base 13.
Single-chip microcomputer has two circuits: a data line connects stepper motor 1, and single-chip microcomputer is by the rotation control signal (step number, direction and speed) of data line output stepper motor 1; Another data line connects length mircrometer gauge 9, so that receive the measurement data signals of length mircrometer gauge 9.Single-chip microcomputer is by the collaborative radius of curvature measurement of realizing sphere element to be measured that moves of stepper motor 1 and length mircrometer gauge 9.
Consult Fig. 2, Fig. 3, Fig. 4, a kind of three-point-linked variable footpath spheric curvature surveying instrument, its concrete physical construction is: there is a length mircrometer gauge 9 at the center of workbench 14, workbench 14 is connected with the retained part of the outside of length mircrometer gauge 9 by swelling cover 8, and the measuring staff of length mircrometer gauge 9 workbench 14 relatively vertically is free to slide.On workbench 14, three rectangular grooves are evenly respectively around length mircrometer gauge 9, and three grooves are that the center with length mircrometer gauge 9 is that the center is the equal angles radial distribution, fixing a guide rod 10 in each groove respectively, the axial line of each guide rod 10 all passes through the center of length mircrometer gauge 9, the active sliding block 4 that can be free to slide is arranged and by movable slider 12 on the guide rod 10, active sliding block 4 and fixed support bar 11 on the movable slider 12, support bar 11 is used for supporting sphere element to be measured.And fixing stepper motor 1 and ball-screw 6 below the workbench 14, stepper motor 1 is connected with ball-screw 6 by shaft coupling 2, nut 5 on the ball-screw 6 is fixed together with active sliding block 4, in addition, two slide bars 7 that also are being connected on the active sliding block 4 like this, active sliding block 4, are taken place to move synchronously under the acting in conjunction of slide bar 7 and guide rod 10 by movable slider 12, and the support bar 11 that is fixed on three slide blocks 4,12 also relatively moves synchronously, and the displacement of moving equates.So this planar linkage mechanism can guarantee that in the process that moves, the center of three support bars 11 overlaps with the center of length mircrometer gauge 9 all the time.
In the measuring process of the utility model instrument, do not need to know for sure the absolute distance at three support bars 11 and its length mircrometer gauge 9 centers only need be known the relative displacement of three support bars 11 and the surface curvature radius that two rise measured values can calculate sphere element to be measured.During measurement, three support bars 11 are in and equidistant position, the center of length mircrometer gauge 9, and hypothesis position at this moment is an initial position, allow length mircrometer gauge 9 measure first rise numerical value this moment again, send turn signal by single-chip microcomputer to stepper motor 1 then, making stepper motor 1 drive ball-screw 6 rotates, nut 5 on the ball-screw 6 can be converted to rectilinear motion rotatablely moving, thereby the active sliding block 4 that is connected on the nut 5 is also carried out rectilinear motion, active sliding block 4 makes two to be carried out straight line simultaneously by movable slider 12 and its and move by slide bar 7 and guide rod 10 again, be fixed on three slide blocks 4 like this, support bar 11 on 12 also can be along with active sliding block 4, being carried out straight line together by movable slider 12 moves, when active sliding block 4, behind a certain position of movable slider 12 arrival, write down the position of this moment, it also is active sliding block 4, the displacement of being passed by by movable slider 12, measure second rise numerical value by length mircrometer gauge 9 again, single-chip microcomputer calculates the data substitution measure equation of measuring gained then, can calculate the radius-of-curvature and the measuring accuracy of this moment of sphere element to be measured.
Measure equation is as follows:
R is the surface curvature radius of sphere element to be measured in the formula,
h
1Be the rise of measuring for the first time,
h
2Be the rise of measuring for the second time,
T is the little radius of a ball in support bar end,
r
12Be the relative shift of surveying the ring radius when measuring for twice (also slide block pass by displacement).
Illustrate: for the sphere element to be measured of a spill, we use support bar end bead on the occasion of (+t); For the sphere element to be measured of a convex, the negative value that we use support bar end bead (t).
Last single-chip microcomputer outputs to measurement result on the display.In addition,, do not relate to the loading and unloading and the replacing of the survey ring as ring-form spherometer,, improved the measuring accuracy and the fiduciary level of instrument so reduced the influence that stochastic error and personal error are brought greatly because this measuring process is automatic measuring process.
Consult Fig. 5, length mircrometer gauge of the present utility model is the incremental length gauge of German HEIDENHAIN company, select the MT2500 in the HEIDENHAIN-METRO series length meter for use, it is made up of measuring contacts 9-1, measuring staff 9-2, measuring staff retained part 9-3, data line 9-4, body 9-5.Measuring contacts 9-1 can move freely with respect to measuring staff 9-2 and body 9-5, and the length mircrometer gauge moves the accurate measuring length displacement by contact 9-1's.Consult Fig. 2, in physical construction of the present utility model, length mircrometer gauge 9 is by its measuring staff retained part 9-3, also has swelling cover 8 to link to each other with workbench 14, and such cooperation centralized positioning precision is very high.The measuring staff 9-2 of length mircrometer gauge 9 can vertically move freely with respect to workbench 14, and length mircrometer gauge 9 is to carry out rise by the surface that contact 9-1 touches sphere element to be measured to measure.After measurement was finished, length mircrometer gauge 9 just outputed to single-chip microcomputer to measurement data, carried out data processing by single-chip microcomputer then.
The using method of the utility model instrument is as follows:
Before use, connect data line and power lead, opening power, single-chip microcomputer, display and stepper motor, in display, open the Survey Software of measuring sphere curvature radius then, import the article diameters size of sphere element to be measured and the requirement of measuring accuracy to it, so that single-chip microcomputer is determined the displacement size that slide block is walked.In the page of display, click START button then.
The automatic drive stepping motor 1 of single-chip microcomputer is rotated then, thereby make active sliding block 4, moved to initial position by movable slider 12, single-chip microcomputer is changed to zero active sliding block 4 with by the initial position of movable slider 12 automatically, then the standard optical flat is put down gently on described support bar 11, and the reading that makes length mircrometer gauge 9 is changed to zero, after the zero setting standard optical flat is taken off, in the page of display, click the Next button then.
Then sphere lighter element to be measured is placed on the support bar 11, the end bead of three support bars 11 is all contacted with sphere element to be measured, at this moment single-chip microcomputer is controlled length mircrometer gauge 9 automatically, makes length mircrometer gauge 9 measure first rise, and the measured value of first rise is stored in the single-chip microcomputer automatically.Then sphere element to be measured is taken off from support bar 11, in the page of display, click the Next button then.
The automatic drive stepping motor of single-chip microcomputer 1 is rotated then, thereby drives active sliding block 4 and moved by movable slider 12.After arriving certain distance when active sliding block 4 with by movable slider 12, the displacement that single-chip microcomputer can be passed by slide block is automatically stored in the single-chip microcomputer, when active sliding block 4 with after by movable slider 12 stop motions, sphere element to be measured is put down gently on the support bar 11 again, the end bead of three support bars 11 is all contacted with sphere element to be measured, at this moment, single-chip microcomputer is control length mircrometer gauge 9 automatically, make length mircrometer gauge 9 measure second rise, second rise measured value stored in the single-chip microcomputer, sphere element to be measured is taken off from support bar 11, in the page of display, click the Next button then.
Single-chip microcomputer can be handled the data of storage automatically according to following formula then:
In the formula: R is the surface curvature radius of sphere element to be measured,
h
1Be the rise of measuring for the first time,
h
2Be the rise of measuring for the second time,
T is the little radius of a ball in support bar end,
r
12Survey the relative shift of ring radius when being twice measurement.
For the sphere element to be measured of a spill, we use support bar end bead on the occasion of (+t); For the sphere element to be measured of a convex, the negative value that we use support bar end bead (t).
Automatically calculate the surface curvature radius and the measuring accuracy of this moment of sphere to be measured, and measurement result is outputed on the display, show, in the page of display, click " finishing " button at last by display.
Single-chip Controlling stepper motor 1 counter-rotating then makes slide block 4,12 get back to the original position, at this moment surveying instrument in a state of nature, measuring process is all over.
In the measuring process of the utility model instrument, do not need to know for sure the absolute distance at three support bars 11 and its length mircrometer gauge 9 centers only need be known the relative displacement of three support bars 11 and the surface curvature radius that two rise measured values can calculate sphere element to be measured.In addition,, do not relate to the loading and unloading and the replacing of the survey ring as ring-form spherometer,, improved the measuring accuracy and the fiduciary level of instrument so reduced the influence that stochastic error and personal error are brought greatly because this measuring process is automatic measuring process.
Show through on probation, the utility model apparatus structure compactness, easy to use, measure automatically, the instant playback of measurement result, continuous coverage, measuring accuracy height, need not the optical flat duplication check, do not relate to the loading and unloading and the replacing of surveying ring, reduced the influence that stochastic error and personal error are brought.
Claims (1)
1. a three-point-linked variable footpath spheric curvature surveying instrument is characterised in that its formation comprises; Workbench (14) places on the base (13), by swelling cover (8) the measuring staff retained part (9-3) of length mircrometer gauge (9) is vertically passed this workbench (14) by the below of this workbench (14) and fix, and the measuring staff (9-2) of this length mircrometer gauge (9) and the measuring contacts (9-1) that links to each other thereof can vertically slide up and down on workbench (14); On described workbench (14), intersection point with the axis of length mircrometer gauge (9) is the groove of three strips of the radial even distribution of center equal angles, fix a guide rod (10) in each groove respectively, the axis of every guide rod (10) all passes through this center, wherein a guide rod is provided with an active sliding block (4), respectively is provided with one by movable slider (12) on two guide rods in addition;
Workbench (14) following fixedly stepper motor (1) and ball-screw (6), this stepper motor (1) links to each other with ball-screw (4) by shaft coupling (2), the sheathed nut (5) of this ball-screw (4) links together with active sliding block (4), vertically fix a support bar (11) on this active sliding block (4), this active sliding block (4) two slide bars (7) that also are being connected, these two slide bars (7) are linked to each other by movable slider (12) with two respectively, each is gone up each by movable slider (12) and vertically fixes a support bar (11), stepper motor (1) drives ball-screw (6), thereby drives three support bars (11) synchronous interaction on the slide block;
Described three support bars (11) overlap with the intersection point of workbench (14) with the axis of the measuring staff of described length mircrometer gauge (9) at the center of the intersection point formation of described workbench (14);
Described single-chip microcomputer has two circuits: a data line connects stepper motor (1), rotates control signal to stepper motor (1) output; Another data line connects length mircrometer gauge (9), receives the measurement data signals of length mircrometer gauge (9), and measurement data is handled or deposited storer in or be presented on the display through this single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620048584 CN200993574Y (en) | 2006-12-05 | 2006-12-05 | Three-point linkage variable diameter spherical curvature measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620048584 CN200993574Y (en) | 2006-12-05 | 2006-12-05 | Three-point linkage variable diameter spherical curvature measuring instrument |
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| Publication Number | Publication Date |
|---|---|
| CN200993574Y true CN200993574Y (en) | 2007-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620048584 Expired - Lifetime CN200993574Y (en) | 2006-12-05 | 2006-12-05 | Three-point linkage variable diameter spherical curvature measuring instrument |
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| CN (1) | CN200993574Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427885C (en) * | 2006-12-05 | 2008-10-22 | 中国科学院上海光学精密机械研究所 | Three-point-linked variable spherical curvature measuring instrument and method therefor |
| CN109405718A (en) * | 2018-12-17 | 2019-03-01 | 国网重庆市电力公司电力科学研究院 | A kind of cable bend displacement measurement device |
-
2006
- 2006-12-05 CN CN 200620048584 patent/CN200993574Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427885C (en) * | 2006-12-05 | 2008-10-22 | 中国科学院上海光学精密机械研究所 | Three-point-linked variable spherical curvature measuring instrument and method therefor |
| CN109405718A (en) * | 2018-12-17 | 2019-03-01 | 国网重庆市电力公司电力科学研究院 | A kind of cable bend displacement measurement device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20081022 |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20081022 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |