CN2577239Y - Potable laser collimator - Google Patents
Potable laser collimator Download PDFInfo
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- CN2577239Y CN2577239Y CN 02285917 CN02285917U CN2577239Y CN 2577239 Y CN2577239 Y CN 2577239Y CN 02285917 CN02285917 CN 02285917 CN 02285917 U CN02285917 U CN 02285917U CN 2577239 Y CN2577239 Y CN 2577239Y
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- laser
- adjusting mechanism
- target mirror
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- photelectric receiver
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Abstract
The utility model relates to a portable laser collimation measurer which is composed of a laser shot receiving head (1), a target mirror (2) and a signal processing unit (3), wherein the laser shot receiving head (1) is composed of an integrated semiconductor fiber laser (4), a collimation lens (5), an optoelectronic receiver (6) and a mechanical trim mechanism (7). The integrated semiconductor fiber laser (4), the collimation lens (5) and the optoelectronic receiver (6) are fixed on the mechanical trim mechanism (7) separately through support brackets (8, 9, 10, 11). A prism of corner cube (13) in the target mirror (2) is fixed on a trim mechanism (15) through a glass prism base (14). The signal processing unit completes the functions of collecting, processing, outputting measuring signals, etc. The measuring apparatus has the advantages of small volume, convenient measurement, high measuring stability, etc.
Description
(1) technical field
The utility model relates to a kind of laser surveying instrument, is specially adapted to the shaped position error (as linearity, right alignment etc.) of large-scale workpiece is measured.
(2) background technology
Methods such as shaped position errors such as domestic and international at present measurement large-scale workpiece linearity, right alignment, the depth of parallelism still mainly adopt and draw steel wire, the axle of having a holiday or vacation, shortcomings such as these method ubiquity efficiency of measurement are low, measuring accuracy difference.The later stage seventies 20th century, various laser alignment method and apparatus have appearred both at home and abroad, because measuring the target mirror, these laser alignment method ubiquities have the cable of following photelectric receiver, volume is big owing to adopt the He-Ne laser instrument for the laser alignment head, the drift of not resolving generating laser self makes and collimates problems such as precision is not high, generally do not used.A kind of collimator apparatus that adopts single-mode fiber and He-Ne laser instrument, owing to adopt single-mode fiber to reduce the drift of laser instrument itself, thereby improve the laser alignment precision, but this device adopts resolution element to come coupled laser and optical fiber, causes the instability of output intensity, this device still adopts the target mirror of tape cable simultaneously, bring certain difficulty [Feng Qibo etc., Automatic Laser Collinmation System on Fiber, " Chinese journal of scientific instrument " to on-site rapid measurement, 1994,15 (4): 363].The laser alignment measurement device that employing semiconductor laser that patent 97250676.4 " laser alignment measurement instrument " proposes and position sensor constitute, though this patent adopts semiconductor laser, can reduce the volume of collimation head, but do not reduce the drift of semiconductor laser owing to take effective measures, make measuring accuracy not high, because detector is fixed on the measurement target mirror, cable also needs to move together when causing the running target mirror, makes troubles to measurement simultaneously.
(3) summary of the invention
Technical problem to be solved in the utility model provides a kind of portable laser collimation detector.Because photelectric receiver is fixed on the laser beam emitting head, no photoelectricity receiver is connected with cable on the measurement target mirror; The laser alignment head is owing to adopt integrated semiconductor laser device, thus make measurement mechanism have volume little, measure convenient, measurement stability advantages of higher.
The technical solution adopted in the utility model is: this laser collimator receives head, target mirror and signal processing unit three parts by Laser emission and forms.It is characterized in that: said Laser emission receives head by generating laser, collimation lens, photelectric receiver and mechanical micro-adjusting mechanism are formed, described generating laser and collimation lens are fixed on the mechanical micro-adjusting mechanism by support respectively, the light of generating laser outgoing becomes the suitable directional light of spot size through behind the collimation lens, described photelectric receiver is fixed on the mechanical micro-adjusting mechanism by support, and receive the light that reflects from the target mirror, described mechanical micro-adjusting mechanism is mainly used to regulate the light that the outgoing Laser emission receives a shoot laser, described generating laser adopts integrated optical semiconductor fibre laser, and this integrated optical semiconductor fibre laser mainly is that semiconductor laser directly is fixed together by the mode of rigid connection the (as glueing joint or welding) with single-mode fiber.
Described target mirror comprises a prism of corner cube and mechanical micro-adjusting mechanism, prism of corner cube is fixed on this micro-adjusting mechanism by lens seat, receive the light that Laser emission receives an outgoing, and this light is reflexed to Laser emission receive on the photelectric receiver on the head, the machinery micro-adjusting mechanism is mainly used to the position of accommodation reflex light, and reflection ray is got on the photelectric receiver; Function that described signal processing unit finishes that the signal that photelectric receiver is detected is gathered, handled and exports etc.
Described photelectric receiver can adopt four-quadrant photelectric receiver, PSD position sensitive device and CCD photoelectric device; The mechanical micro-adjusting mechanism that described Laser emission receives on the head can adopt two-dimensional direction governor motion or four-dimensional governor motion (two-dimensional direction and bidimensional displacement), and the micro-adjusting mechanism on the target mirror then needs to adopt bidimensional displacement governor motion.
The utility model is compared the advantage that is had with background technology: one, receive on the photelectric receiver on the head adopting prism of corner cube incident light to be reflexed to Laser emission on the target mirror, realized that the target mirror does not have the photoelectricity receiver and is connected with no cable, brought great convenience to measurement; Its two, replace traditional He-Ne laser instrument or semiconductor laser with incorporate optical semiconductor fibre laser, greatly improved the room and time stability of emergent ray, improve the laser alignment precision, the volume that also makes Laser emission receive head significantly reduces.
(4) description of drawings
Fig. 1 portable laser collimator front view
Fig. 2 portable laser collimator vertical view
Among the figure: 1 for Laser emission receive head, 2 be the target mirror, 3 for signal processing unit, 4 integrated optical semiconductor fibre lasers, 5 for collimation lens, 6 for photelectric receiver, 7 for mechanical micro-adjusting mechanism, 8,9,10,11, be support, 12 boxes, 13 is that prism of corner cube, 14 is lens seat, and 15 is mechanical micro-adjusting mechanism.
(5) embodiment
The contrast accompanying drawing illustrate and realizes optimal way of the present utility model: this laser collimator (Fig. 1, Fig. 2) is made up of Laser emission reception 1, target mirror 2 and signal processing unit 3 three parts.It is characterized in that: said Laser emission receives 1 by integrated optical semiconductor fibre laser 4 (generating laser), collimation lens 5, photelectric receiver 6 and mechanical micro-adjusting mechanism 7 are formed, described integrated semiconductor laser 4 and collimation lens 5 are respectively by support 8,9 and 10 are fixed on the mechanical micro-adjusting mechanism 7, the light of integrated semiconductor laser 4 outgoing becomes the suitable directional light of spot size through behind the collimation lens 5, described photelectric receiver 6 is fixed on the mechanical micro-adjusting mechanism 7 by support 11, reception is from the light of target mirror 2 reflections, described mechanical micro-adjusting mechanism 7 is mainly used to regulate the direction that the outgoing Laser emission receives 1 a shoot laser light, and whole Laser emission receives head and covers with a box 12; Described target mirror 2 is made up of a prism of corner cube 13 and mechanical micro-adjusting mechanism 15, prism of corner cube 13 is fixed on the micro-adjusting mechanism 15 by lens seat 14, receive the light that Laser emission receives 1 outgoing, and this light is reflexed to Laser emission receive on the photelectric receiver 6 on 1, machinery micro-adjusting mechanism 15 is mainly used to the position of accommodation reflex light, and reflection ray is got on the photelectric receiver 6; Function that described signal processing unit 3 finishes that the signal that photelectric receiver 6 is detected is gathered, handled and exports etc.
Described photelectric receiver 6 adopts the four-quadrant photelectric receiver; The mechanical micro-adjusting mechanism 7 that described Laser emission receives on 1 can adopt the two-dimensional direction governor motion, 9 needs employings of the micro-adjusting mechanism on target mirror bidimensional displacement governor motion.
Adopt the laser instrument (as He-Ne laser instrument, general semiconductor laser instrument etc.) of other type to substitute integrated semiconductor laser, can obtain similar effects, but the collimation precision can reduce; Adopt the alternative four-quadrant photelectric receiver of photelectric receiver (as PSD position sensitive device and CCD photoelectric device) of other types can play same effect.
Measuring principle of the present utility model is summarized as follows: Laser emission is received 1 be fixed on the measured workpiece together with target mirror 2, target mirror 2 is fixed on the traveling table (as the slide block of guide rail), adjust Laser emission and receive a directional trim mechanism on 1 and the displacement micro-adjusting mechanism on the target mirror, make emergent ray substantially parallel, and the feasible light that reflects from the target mirror is tried one's best in the center of photelectric receiver 6 with measured workpiece.After having adjusted, mobile traveling table, if there is the linearity deviation in workpiece, then the target mirror is inevitable moves on perpendicular to the both direction of emission light, thereby change the position of incident ray on prism of corner cube, by the characteristic of prism of corner cube as can be known, the light position that is reflected by prism of corner cube also changes, the position quantity of its variable quantity and prism of corner cube is identical, identical variation can take place in the position got on the photelectric receiver of Fan She light like this, obtain the skew of workpiece thus, obtain the linearity of workpiece by processing with respect to the light center.This device of similar use can also obtain the shaped position error of workpiece other types.
The sensitivity of this measurement device target mirror change in location is 0.0005mm, and collimator distance is greater than 10m, and measuring error is applicable to static state and kinetic measurement to large-scale workpiece different shape site error less than (0.002+2L) mm (L is a collimator distance, and unit is m).
Claims (2)
1. portable laser collimation detector, receiving head (1), target mirror (2) and signal processing unit (3) three parts by Laser emission forms, said Laser emission receives head (1) and comprises generating laser (4), collimation lens (5) and mechanical micro-adjusting mechanism (7), described generating laser (4) and collimation lens (5) are fixed on the mechanical micro-adjusting mechanism (7) by support (8), (9), it is characterized in that: described Laser emission receives the integrated optical semiconductor fibre laser of generating laser (4) in the head (1); Described target mirror (2) is for comprising a prism of corner cube (13), and this prism of corner cube (13) is fixed on the mechanical micro-adjusting mechanism (15) by a holder (14).
2. a kind of portable laser collimation detector according to claim 1 is characterized in that: Laser emission receives head (1) and also comprises photelectric receiver (6), and described photelectric receiver (6) is fixed on the mechanical micro-adjusting mechanism (7) by support (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02285917 CN2577239Y (en) | 2002-11-12 | 2002-11-12 | Potable laser collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02285917 CN2577239Y (en) | 2002-11-12 | 2002-11-12 | Potable laser collimator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2577239Y true CN2577239Y (en) | 2003-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02285917 Expired - Fee Related CN2577239Y (en) | 2002-11-12 | 2002-11-12 | Potable laser collimator |
Country Status (1)
| Country | Link |
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| CN (1) | CN2577239Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460811C (en) * | 2006-07-24 | 2009-02-11 | 北京交通大学 | Method and device for improving straight line degree measurement sensitivity |
| CN100460255C (en) * | 2006-09-21 | 2009-02-11 | 北京交通大学 | Device, system and method for automatic monitoring steel rail parameter by using laser |
| CN102322825A (en) * | 2011-06-02 | 2012-01-18 | 南京航空航天大学 | Optical measuring system and method for coaxiality of extra-long-hole part |
| CN102589448A (en) * | 2012-03-13 | 2012-07-18 | 北京信息科技大学 | High-precision six-freedom degree pose monitoring device |
| CN103673933A (en) * | 2013-11-29 | 2014-03-26 | 中国科学院上海光学精密机械研究所 | Long rail straightness measuring device |
| CN104034354A (en) * | 2014-06-24 | 2014-09-10 | 中国船舶重工集团公司第七一七研究所 | Alignment process for IMU (Inertial Measurement Unit) position and azimuth determining system |
| WO2018103268A1 (en) * | 2016-12-09 | 2018-06-14 | 北京交通大学 | Laser measurement system for measuring geometric error in six degrees of freedom of rotating shaft, and method therefor |
| CN110641513A (en) * | 2019-09-25 | 2020-01-03 | 北京交通大学 | Detection system and method for wheel-rail acting force and tread fault |
-
2002
- 2002-11-12 CN CN 02285917 patent/CN2577239Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460811C (en) * | 2006-07-24 | 2009-02-11 | 北京交通大学 | Method and device for improving straight line degree measurement sensitivity |
| CN100460255C (en) * | 2006-09-21 | 2009-02-11 | 北京交通大学 | Device, system and method for automatic monitoring steel rail parameter by using laser |
| CN102322825A (en) * | 2011-06-02 | 2012-01-18 | 南京航空航天大学 | Optical measuring system and method for coaxiality of extra-long-hole part |
| CN102322825B (en) * | 2011-06-02 | 2013-02-20 | 南京航空航天大学 | Optical measuring system and method for coaxiality of extra-long-hole part |
| CN102589448A (en) * | 2012-03-13 | 2012-07-18 | 北京信息科技大学 | High-precision six-freedom degree pose monitoring device |
| CN103673933A (en) * | 2013-11-29 | 2014-03-26 | 中国科学院上海光学精密机械研究所 | Long rail straightness measuring device |
| CN104034354A (en) * | 2014-06-24 | 2014-09-10 | 中国船舶重工集团公司第七一七研究所 | Alignment process for IMU (Inertial Measurement Unit) position and azimuth determining system |
| CN104034354B (en) * | 2014-06-24 | 2017-01-18 | 中国船舶重工集团公司第七一七研究所 | Alignment process for IMU (Inertial Measurement Unit) position and azimuth determining system |
| WO2018103268A1 (en) * | 2016-12-09 | 2018-06-14 | 北京交通大学 | Laser measurement system for measuring geometric error in six degrees of freedom of rotating shaft, and method therefor |
| CN110641513A (en) * | 2019-09-25 | 2020-01-03 | 北京交通大学 | Detection system and method for wheel-rail acting force and tread fault |
| CN110641513B (en) * | 2019-09-25 | 2021-07-30 | 北京交通大学 | Detection system and method for wheel-rail acting force and tread fault |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |