CN102364300A - Small-angle block gauge - Google Patents
Small-angle block gauge Download PDFInfo
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- CN102364300A CN102364300A CN2011103282294A CN201110328229A CN102364300A CN 102364300 A CN102364300 A CN 102364300A CN 2011103282294 A CN2011103282294 A CN 2011103282294A CN 201110328229 A CN201110328229 A CN 201110328229A CN 102364300 A CN102364300 A CN 102364300A
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Abstract
The invention provides a small-angle block gauge which is suitable for a working angle of less than 1 degree and meets the calibration and the small-angle detection of a small-angle measuring instrument. The small-angle block gauge comprises an angle block gauge base fixed above an installation base plate; two installation surfaces are spaced at the same side surface of the angle block gauge base in the vertical direction; an upper reflector is installed in the upper installation surface; a lower reflector is installed in the lower installation surface; a transmission refractor is arranged before the upper and the lower reflectors; and the transmission refractor is also fixed above the installation base plate. The small-angle block gauge has the advantages of novel structure, convenience for installation, stable performance, high degree of accuracy, good repeatability of measurement and easiness for the reproduction of angle; and the small-angle block gauge is applied to the measurement and the calibration of the small-angle measuring instrument and can effectively avoid the problem of the alignment of an optical shaft during the conversion of a measuring surface so that the installation complexity of the angle block gauge is reduced.
Description
Technical field
The invention belongs to the geometric sense field of measuring techniques, be specifically related to a kind of angular range and be-1 °～+ 1 ° low-angle angle block gauge.
Background technology
The laser narrow angle measuring device is to be used for measuring-1 °～+ 1 ° low-angle surveying instrument, and accuracy of measurement is high, uncertainty of measurement be U=0.05 " (k=2).Calibration of laser narrow angle measuring device and transmission of quantity value need angle block gauge as the standard utensil, are the left and right horizontal layout structure but traditional angle block gauge 1 adopts workplace, and the angle of adjacent two workplace normals is as operating angle, referring to shown in Figure 1.The intersection point of two workplace centre normal is the centre of gyration of angle block gauge; The optical axis of the autocollimator that the fit angle piece is measured overlaps with angle block gauge workplace centre normal as far as possible; Along with the angle block gauge rotation, the optical axis of workplace conversion back autocollimator can overlap with other workplace centre normal like this.
But for operating angle less than 1 °; Angle block gauge 1 workplace centre normal intersection point and workplace be apart from becoming big, and after guaranteeing the anglec of rotation, autocollimator can alignment work face center; Angle block gauge workplace centre normal intersection point overlaps with the centre of gyration, needs very long revoliving arm.Formula D=L/2tan (θ/2) has shown the relation of the centre of gyration to workplace distance B and angle block gauge angle, and when angle block gauge angle during less than 1 °, the centre of gyration is to the workplace distance even reach 1m, and this brings very big difficulty for installation of angle block gauge.Simultaneously, operating angle is processed also cumbersome less than 1 ° angle block gauge, and rejection rate is higher, causes the angle block gauge cost significantly to promote.The low-angle angle block gauge of development new model overcomes above-mentioned drawback, and the demand that satisfies calibration of little angle and measurement becomes the problem of needing solution badly.
Summary of the invention
The object of the present invention is to provide a kind of operating angle that is applicable to less than 1 °, satisfy the calibration of low-angle gauging instrument and the low-angle angle block gauge that low-angle detects.
Realize the technical scheme of the object of the invention: a kind of low-angle angle block gauge; It comprises the angle block gauge pedestal that is fixed on installation base plate top; On the same side of angle block gauge pedestal, be processed with two installed surfaces of separated layout between the upper and lower; In last installed surface, upper reflector is installed, in the installed surface catoptron down is being installed down; In upper reflector and following catoptron the place ahead a transmission enocscope is set, the transmission enocscope also is fixed on installs the base plate top; Following installed surface on the described angle block gauge pedestal is vertical with the bottom surface of angle block gauge pedestal; Last installed surface on the described angle block gauge pedestal is vertical with the bottom surface of angle block gauge pedestal and process-1 °～+ 1 ° angle with the following installed surface of angle block gauge pedestal; Installed surface is this angle block gauge operating angle with following installed surface at the bottom surface of angle block gauge pedestal projection angle on this moment, and angular range is-1 °～+ 1 °; Described transmission enocscope is formed by two prisms gummeds up and down, and two prism cemented surface places scribble the half-transmitting and half-reflecting film up and down; Wherein, last prism is a parallelogram prism, and the logical light mouth of last prism aligns with upper reflector mutually; Following prism is a prism, and following prism Tong Guangkou aligns with following catoptron mutually.
Aforesaid a kind of low-angle angle block gauge, the following installed surface center on its described angle block gauge pedestal is processed with through hole, through hole four threaded holes that are uniformly distributed along the circumference, following catoptron is installed in this through hole, and passes four threaded holes through four bolts and fix; Last installed surface center on the described angle block gauge pedestal is processed with through hole, through hole four threaded holes that are uniformly distributed along the circumference, and upper reflector is installed in this through hole, and passes four threaded holes through four bolts and fix.
Aforesaid a kind of low-angle angle block gauge; The upper reflector that it is described to be installed in the installed surface is vertical with the installation base plate with following reflecting surface with the last reflecting surface of following catoptron in being installed in down installed surface, and reflecting surface is consistent with installation base plate center with following reflecting surface central projection on this.
Aforesaid a kind of low-angle angle block gauge, its described upper reflector adopts devitrified glass processing with following catoptron.
Aforesaid a kind of low-angle angle block gauge, its described transmission enocscope adopts the K9 glass processing to form, and it utilizes gluing being connected on of optical texture to install on the base plate.
Aforesaid a kind of low-angle angle block gauge, its described installation base plate are circular sheet metal, on the installation base plate, are processed with installed surface, can whole angle block gauge be installed on the slew gear.
Aforesaid a kind of low-angle angle block gauge, its described installation base plate adopts 2Cr13 materials processing to form; Described angle block gauge pedestal adopts invar materials processing to form.
Effect of the present invention is:
Low-angle angle block gauge of the present invention is made up of two reflectings surface, and two workplaces adopt top-bottom layout, can be installed in the centre of gyration, need not to be installed on the autocollimator collimation workplace center after the anglec of rotation that can guarantee on the revoliving arm.This angle block gauge novel structure, easy for installation, stable performance; Accuracy is high, and measuring repeatability is good, and angle value reappears easily; It is used for the measurement and the calibration of optics small angle measurement instrument, can effectively avoid measuring the problem of optical axis centering in the face transfer process, reduces the angle block gauge mounting complexity.
Low-angle angle block gauge of the present invention can be processed into arbitrarily angled as required, is particularly suitable for the low-angle situation.Angle block gauge is different from traditional angle block gauge from structure, can avoid causing the excessive problem of the turning radius owing to angle is too little, installs and uses conveniently, is applicable to the calibration of small angle measurement instruments such as photoelectric auto-collimator.
Description of drawings
The principle of work of Fig. 1 tradition angle block gauge;
Fig. 2 a kind of low-angle angle block gauge structural representation of the present invention.
Among the figure: 1. traditional angle block gauge; 2. autocollimator light pipe; 3. installation base plate; 4. angle block gauge pedestal; 5. upper reflector; 6. descend catoptron; 7. transmission enocscope; 8. autocollimator.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment a kind of low-angle angle block gauge of the present invention is further described.
As shown in Figure 2, a kind of low-angle angle block gauge of the present invention mainly comprises installs base plate 3, angle block gauge pedestal 4, upper reflector 5, following catoptron 6, transmission enocscope 7.
Wherein, angle block gauge pedestal 4 is fixed on installs base plate 3 tops, on the same side of angle block gauge pedestal 4, is processed with two installed surfaces of separated layout between the upper and lower, and upper reflector 5 is installed in last installed surface, in the installed surface catoptron 6 down is being installed down; In upper reflector 5 and following catoptron 6 the place aheads a transmission enocscope 7 is set, transmission enocscope 7 bottoms also are fixed on installs base plate 3 tops.
Above-mentioned angle block gauge pedestal 4 adopts invar processing, to reduce the variable quantity that the angle block gauge pedestal produces with temperature.Following installed surface on the angle block gauge pedestal 4 is vertical with the bottom surface of angle block gauge pedestal 4; Last installed surface on the angle block gauge pedestal 4 is vertical with the bottom surface of angle block gauge pedestal 4 and process-1 °～+ 1 ° angle with the following installed surface of angle block gauge pedestal 4; Installed surface is this angle block gauge operating angle with following installed surface at the bottom surface of angle block gauge pedestal 4 projection angle on this moment, and angular range is-1 °～+ 1 °.
Following installed surface center on angle block gauge pedestal 4 is processed with through hole, through hole four threaded holes that are uniformly distributed along the circumference, and following catoptron 6 is installed in this through hole, and passes four threaded holes through four bolts and fix.The installed surface center is processed with through hole on the angle block gauge pedestal 4, through hole four threaded holes that are uniformly distributed along the circumference, and upper reflector 5 is installed in this through hole, and passes four threaded holes through four bolts and fix.Upper reflector 5 adopts devitrified glass processing with following catoptron 6, guarantees the reflecting surface flatness.
Above-mentioned transmission enocscope 7 adopts the K9 glass processings, is formed by two prisms gummeds up and down, and two prism cemented surface places scribble the half-transmitting and half-reflecting film up and down.Last prism is a parallelogram prism, and the logical light mouth of last prism aligns with upper reflector 5 mutually; Following prism is a prism, and following prism Tong Guangkou aligns with following catoptron 6 mutually.Transmission enocscope 7 utilizes gluing being connected on of optical texture to install on the base plate 3, can realize semi-transparent semi-reflecting function.Light beam from autocollimator 8 during use is punished into the two-way light beam at the half-transmitting and half-reflecting film, and one road light beam is mapped to upper reflector 5, can't reflected back autocollimator 8 in; Another road light beam is mapped to down catoptron 6, but in the reflected back autocollimator 8.
Above-mentioned installation base plate 3 is circular sheet metal, is used for fixing angle block gauge pedestal 4 and transmission refractive prism 7, installs simultaneously on the base plate 3 and is processed with mounting hole, can whole angle block gauge be installed on the slew gear.The rapidoprint that base plate 3 is installed adopts 2Cr13.
In the installation process,, make the last reflecting surface of upper reflector 5 and following catoptron 6 vertical with installation base plate 3 with following reflecting surface through finishing angle block gauge pedestal 4, also consistent with following reflecting surface central projection with the 3 centers adjustment of installation base plate with going up reflecting surface.
Low-angle angle block gauge principle of work of the present invention:
Low-angle angle block gauge of the present invention adopts the form of reflecting surface top-bottom layout, and upper reflector 5 and the following catoptron 6 promptly installed on the angle block gauge pedestal 4 form the angle value that angle is an angle block gauge in the horizontal direction, and angular range is-1 °～+ 1 °, referring to shown in Figure 2.This angle block gauge is easy to install and use, can effectively avoid left and right sides structure angle block gauge revolution to heart problem.Angle block gauge up and down two reflectings surface forms angle in the horizontal direction, and scope is very little because autocollimator 8 takes measurement of an angle, under utilizing the photoelectric auto-collimator collimation during reflecting surface; Last reflecting surface folded light beam can't retroeflection in autocollimator; After the angle block gauge anglec of rotation, reflecting surface on the autocollimator collimation, the folded light beam of following reflecting surface can not retroeflection in autocollimator; The independent picture that in autocollimator, is collimated into of such two workplaces, the angle value of angle block gauge is the angle that revolution is measured.
The present invention is low-angle calibration design point of view piece, novel structure, stable performance; Especially to developing less than 1 ° angle block gauge, angle block gauge is easy for installation for it, and measuring repeatability is good; Angle value reappears easily, for carrying out small angle measurement and calibration has very great help.
Claims (7)
1. low-angle angle block gauge; It is characterized in that: this low-angle angle block gauge comprises the angle block gauge pedestal (4) that is fixed on installation base plate (3) top; On the same side of angle block gauge pedestal (4), be processed with two installed surfaces of separated layout between the upper and lower; Upper reflector (5) is installed in last installed surface, in the installed surface catoptron (6) down is being installed down; At upper reflector (5) and following catoptron (6) the place ahead a transmission enocscope (7) is set, transmission enocscope (7) also is fixed on installs base plate (3) top;
Following installed surface on the described angle block gauge pedestal (4) is vertical with the bottom surface of angle block gauge pedestal (4); Last installed surface on the described angle block gauge pedestal (4) is vertical with the bottom surface of angle block gauge pedestal (4) and process-1 °～+ 1 ° angle with the following installed surface of angle block gauge pedestal (4); The projection angle is this angle block gauge operating angle to installed surface in the bottom surface of angle block gauge pedestal (4) with following installed surface on this moment, and angular range is-1 °～+ 1 °;
Described transmission enocscope (7) is formed by two prisms gummeds up and down, and two prism cemented surface places scribble the half-transmitting and half-reflecting film up and down; Wherein, last prism is a parallelogram prism, and the logical light mouth of last prism aligns with upper reflector (5) mutually; Following prism is a prism, and following prism Tong Guangkou aligns with following catoptron (6) mutually.
2. a kind of low-angle angle block gauge according to claim 1; It is characterized in that: the following installed surface center on the described angle block gauge pedestal (4) is processed with through hole; Through hole four threaded holes that are uniformly distributed along the circumference; Following catoptron (6) is installed in this through hole, and passes four threaded holes through four bolts and fix; Last installed surface center on the described angle block gauge pedestal (4) is processed with through hole, through hole four threaded holes that are uniformly distributed along the circumference, and upper reflector (5) is installed in this through hole, and passes four threaded holes through four bolts and fix.
3. a kind of low-angle angle block gauge according to claim 1; It is characterized in that: the described upper reflector (5) that is installed in the installed surface is vertical with installation base plate (3) with following reflecting surface with the last reflecting surface of following catoptron (6) in being installed in down installed surface, and reflecting surface is consistent with installation base plate (3) center with following reflecting surface central projection on this.
4. a kind of low-angle angle block gauge according to claim 1 is characterized in that: described upper reflector (5) and following catoptron (6) adopt devitrified glass processing.
5. a kind of low-angle angle block gauge according to claim 1 is characterized in that: described transmission enocscope (7) adopts the K9 glass processing to form, and it utilizes gluing being connected on of optical texture to install on the base plate (3).
6. a kind of low-angle angle block gauge according to claim 1 is characterized in that: described installation base plate (3) is circular sheet metal, on installation base plate (3), is processed with installed surface, can whole angle block gauge be installed on the slew gear.
7. a kind of low-angle angle block gauge according to claim 1 is characterized in that: described installation base plate (3) adopts 2Cr13 materials processing to form; Described angle block gauge pedestal (4) adopts invar materials processing to form.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110328229.4A CN102364300B (en) | 2011-10-25 | 2011-10-25 | Small-angle block gauge |
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| CN201110328229.4A CN102364300B (en) | 2011-10-25 | 2011-10-25 | Small-angle block gauge |
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| CN102364300B CN102364300B (en) | 2013-05-22 |
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Cited By (6)
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| CN104482884A (en) * | 2014-11-20 | 2015-04-01 | 中国工程物理研究院激光聚变研究中心 | Small-angle measurement device and measurement method thereof |
| CN104483741A (en) * | 2014-11-20 | 2015-04-01 | 中国工程物理研究院激光聚变研究中心 | Method for accurately setting optical axis of wedge lens |
| CN104483757A (en) * | 2014-11-20 | 2015-04-01 | 中国工程物理研究院激光聚变研究中心 | Precise axis fixing method for abaxial non-spherical element |
| CN109579877A (en) * | 2018-12-25 | 2019-04-05 | 北京航天计量测试技术研究所 | A kind of single process more fixed angle horizontal alignment methods under land state moving base |
| CN111174733A (en) * | 2020-01-16 | 2020-05-19 | 西安中科微星光电科技有限公司 | Micro-angle detection device and method based on autocollimator |
| CN117367327A (en) * | 2023-12-01 | 2024-01-09 | 上海隐冠半导体技术有限公司 | Pentagonal prism perpendicularity detection system and method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104483757A (en) * | 2014-11-20 | 2015-04-01 | 中国工程物理研究院激光聚变研究中心 | Precise axis fixing method for abaxial non-spherical element |
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| CN109579877A (en) * | 2018-12-25 | 2019-04-05 | 北京航天计量测试技术研究所 | A kind of single process more fixed angle horizontal alignment methods under land state moving base |
| CN109579877B (en) * | 2018-12-25 | 2022-08-19 | 北京航天计量测试技术研究所 | Single-flow multi-fixed-angle horizontal calibration method under land dynamic base |
| CN111174733A (en) * | 2020-01-16 | 2020-05-19 | 西安中科微星光电科技有限公司 | Micro-angle detection device and method based on autocollimator |
| CN111174733B (en) * | 2020-01-16 | 2022-07-19 | 西安中科微星光电科技有限公司 | Micro-angle detection device and method based on autocollimator |
| CN117367327A (en) * | 2023-12-01 | 2024-01-09 | 上海隐冠半导体技术有限公司 | Pentagonal prism perpendicularity detection system and method |
| CN117367327B (en) * | 2023-12-01 | 2024-03-29 | 上海隐冠半导体技术有限公司 | Pentagonal prism perpendicularity detection system and method |
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