CN114459354A - Laser tracking and measuring mechanical system with folded light path - Google Patents
Laser tracking and measuring mechanical system with folded light path Download PDFInfo
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- CN114459354A CN114459354A CN202210191793.4A CN202210191793A CN114459354A CN 114459354 A CN114459354 A CN 114459354A CN 202210191793 A CN202210191793 A CN 202210191793A CN 114459354 A CN114459354 A CN 114459354A
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
- G01B11/005—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates coordinate measuring machines
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Abstract
The invention discloses a laser tracking and measuring mechanical system with a folded light path, which comprises a light path carrying platform, a pitching motion platform, a rotary motor module, a system base and a standard ball. Aiming at the problems that the optical measurement system in the laser tracking measurement mechanical system is heavy, so that the motor motion stability of a pitch shaft and a rotating shaft of the system is poor and the output precision of the motor is reduced, the tiled light path structure is folded and folded in space, the space of the optical system is reduced, the quality of a light path carrying platform is effectively reduced, the distance between the mass center of the laser interference measurement light path system and the pitch shaft of the mechanical system is shortened, the control difficulty of the pitch motor is reduced, and the pitch direction of the laser tracking measurement mechanical system obtains a larger measurement range. The adjusting mode of three shafts inside the laser tracking and measuring system is designed, and the condition that the optical axis, the pitching axis and the three shafts of the rotating shaft of the system need to be intersected with the center of a standard sphere in the laser tracking and measuring mechanical system is guaranteed.
Description
Technical Field
The invention relates to the field of laser measurement, in particular to a laser tracking and measuring mechanical system with a folded light path.
Background
The laser tracking measurement system is a portable three-dimensional coordinate measurement system facing to the field, is mainly used for measuring the large-size geometric dimension and the dynamic track of a space, and is a measurement system urgently required by large-scale scientific engineering and high-end equipment manufacturing. In order to achieve spatially dynamic target tracking and measurement, a laser tracking system is required to accurately detect the relative change of the position of a dynamic target in real time. The measuring light beam can always ensure the quick aiming and tracking of the center of the space moving target, thereby realizing the real-time tracking and accurate measurement of the large-range and long-distance moving target. The laser tracking and measuring system mainly comprises a two-dimensional slewing mechanism capable of realizing automatic tracking and an interference length measuring system. The accuracy of the spatial coordinates of a laser tracking measurement system is generally not high due to the large measurement uncertainty caused by axis misalignment and manufacturing errors in the tracking mirror mechanism of the laser tracking measurement system. Because the precision of the angle measurement of the laser tracking measurement system is limited, and the uncertainty of the angle measurement is larger along with the increase of the measurement range, the further improvement of the measurement precision of the laser tracking measurement system is limited.
Therefore, a laser tracking and measuring mechanical system with a folded light path is needed to be invented, the influence of the error of a tracking mirror mechanism on the measuring precision is avoided, and the laser tracking and measuring precision is improved. Meanwhile, the problems that the motor motion stability of a pitching shaft system and a rotating shaft system of the system is poor and the output precision of the motor is reduced due to the fact that an optical measuring system in a laser tracking measuring mechanical system is heavy are solved.
Disclosure of Invention
Application No. 2019, filed by beijing university of industry on 29/5, entitled "a laser tracking measurement system with standard ball as reflector with added counterweight balance" was published: 2019104590072, a new laser tracking and measuring system design scheme is provided, a laser tracking and measuring system with a standard ball as a reflecting device added with a counterweight balance is designed, the requirement on the shafting precision is reduced, and the measuring precision is superior to that of the traditional laser tracking and measuring equipment under the same processing conditions and processing cost.
On the basis of the Chinese invention patent [ CN2019104590072], the invention improves the precision fine adjustment mode, the laser head internal light path layout, the mass balance of a pitching platform and the whole system and the like, and provides a design scheme of a laser tracking measurement mechanical system with a folding light path. The tiled light path structure is folded, the space height is fully utilized, the space of an optical system is reduced, the quality of a light path carrying platform is effectively reduced, the distance between the mass center of a laser interference measurement light path system and a pitching axis of a mechanical system is shortened, the control difficulty of a pitching motor is reduced, and the laser tracking measurement mechanical system can obtain a larger measurement range in the pitching direction. The adjusting mode of three shafts inside the laser tracking and measuring system is designed, and the condition that the optical axis, the pitching axis and the revolving shaft of the system need to be intersected with the center of a standard ball sphere in the laser tracking and measuring mechanical system is guaranteed.
The technical scheme adopted by the invention is a laser tracking measurement mechanical system with a folded light path. The system comprises a light path carrying platform 1, a pitching motion platform 2, a rotary motion platform 3, a rotary motor module 4 and a system base 5. The rotary motor module 4 is installed on the system base 5, the rotary motion platform 3 is installed on the rotary motor module 4, the pitching motor 6 is installed inside the rotary motion platform, the pitching motion platform is fixedly connected with the pitching motor 6 through screws, and the light path carrying platform 1 is installed on the pitching motion platform 2. The center of the standard ball 7 is arranged at the intersection of the optical axis, the pitching axis and the three axes of the rotating shaft, and the standard ball 7 is fixed with the system base 5 through a screw after being connected with the standard ball fixing column 8 through the screw thread of the standard ball 7.
The internal installation relationship of each mechanical structure of the system is as follows:
the optical path carrying platform 1 comprises an optical platform 9, a laser frame 10, a wave plate frame 11, an optical element base 12, a reflector fixing frame left 13, a reflector fixing frame right 14, an optical element side top piece 15, a position sensitive detector support left 19, a position sensitive detector support right 20, a position sensitive detector adjusting support lower 21, a position sensitive detector adjusting support upper 22, a position sensitive detector fine-tuning screw 24, a measuring optical path box 25, a lens frame 26, a laser head pitching fine-tuning support 27 and an optical fine-tuning thread pair 28.
The laser frame 10 and the reflector fixing frame left 13 are fixed on the left oblique edge of the optical platform 9 through screws, the measuring light path box 25 and the reflector fixing frame right 14 are fixed on the right oblique edge of the optical platform 9 through screws, and the laser frame 10 is symmetrically installed on the left oblique edge and the right oblique edge of the optical platform 9 through screws. The reflector is placed on the left reflector fixing frame 13 and the right reflector fixing frame 14, the V-shaped opening of the optical element side top piece 15 is propped against the right angle of the reflector, and the optical element side top piece 15 is fixed with the left reflector fixing frame 13 and the right reflector fixing frame 14 through screws. The wave plate frame 11, the optical element base 12 and the lens frame 26 are fixed on the horizontal plane of the optical platform 9 through screws, the polarization beam splitter is arranged on the optical element base 12 close to the lens frame 26, and the beam splitter is arranged on the other optical element base 12. The left position sensitive detector support 19 and the right position sensitive detector support 20 are respectively fixed on two sides of the extending end of the horizontal plane of the optical platform 9 through screws. The position sensitive detector fine adjustment screw 24 is arranged on the short side surface of the left 19 of the position sensitive detector support, and the lower 21 of the position sensitive detector adjustment support is arranged above the left 19 and the right 20 of the position sensitive detector support; another position sensitive detector fine adjustment screw 24 is screwed into a fine thread of the lower part 21 of the position sensitive detector adjusting bracket, the upper part 22 of the position sensitive detector adjusting bracket is arranged above the lower part 21 of the position sensitive detector adjusting bracket, and the position sensitive detector is fixed with the upper part 22 of the position sensitive detector adjusting bracket by screws; the horizontal position of the midpoint of the optical receiving surface of the position sensitive detector is adjusted by rotating two position sensitive detector fine adjustment screws 24, and after the adjustment is completed, the position sensitive detector is fixed by the screws on the lower part 21 of the position sensitive detector adjusting bracket and the upper part 22 of the position sensitive detector adjusting bracket, and the position sensitive detector adjusting bracket 22 and the relative positions of the position sensitive detector support left 19 and the position sensitive detector support right 20. The laser head pitching fine adjustment frame 27 is fixed at the tail part of the optical platform 9, and the optical fine adjustment thread pair 28 is arranged in the laser head pitching fine adjustment frame 27.
The pitching motion platform 2 consists of a sphere center support 29, a pitching platform left and right displacement column 30, a pitching platform left and right fine adjustment knob 31, a sphere center support motor connection 32, a pitching fine adjustment fixing plate 33 and a shell frame connection 34. The left and right fine adjustment knobs 31 of the pitching platform are installed in threaded holes in the side faces of the left and right displacement columns 30 of the pitching platform, the left and right displacement columns 30 of the pitching platform are fixedly connected with the center ball support 29 through bolts, and the center ball support 29 and the center ball support motor are connected 32 and are fixed with the pitching motor 6 through screws. The pitch trimming fixing plate 33 is sandwiched between the housing frame connection 34 and the center support 29, the pitch trimming fixing plate 33, and the housing frame connection 34 are fixed by screws. The mounted optical path carrying platform 1 is placed on the pitching motion platform 2, and the extending part of the pitching fine adjustment fixing plate 33 is connected with the laser head pitching fine adjustment frame 27 in the optical path carrying platform 1 through a screw.
The rotary motion platform 3 is composed of a rotary flange 35, a pitching motor mounting frame 36, a plastic elastic support 37 and a motor wire fixing frame 38. The pitching motor mounting frame 36 is fixedly connected with the rotary flange 35 through screws, the plastic elastic support 37 is fixed on the pitching motor mounting frame 36, the pitching motor 6 is fixed on the pitching motor mounting frame 36, and the plastic elastic support 37 is supported on a shaft shoulder of the pitching motor 6. The motor wire holder 38 is mounted on the swivel flange 35 for organizing the cables leading out of the upper half of the fixing system.
The rotary motor module 4 is composed of a rotary motor 39, a rotary motor fixing upper plate 40, a rotary motor fixing side plate 41, a rotary motor fixing bottom plate 42 and a limiting trigger module 43. The rotary motor 39 is fixedly connected with the rotary motor fixing upper plate 40 through screws, and the rotary motor fixing side plate 41 is fixedly connected with the rotary motor fixing upper plate 40 and the rotary motor fixing bottom plate 42 through screws. The limit trigger module 43 is fixed on one of the rotary motor fixing side plates 41.
The method for adjusting the intersection of the optical axis, the pitching axis and the three axes of the rotating shaft of the laser tracking measurement mechanical system of the folded light path with the center of the standard sphere is as follows:
an auxiliary fine adjustment device 44 for the motor shaft is designed to assist in adjusting the pitch axis and the pivot axis.
The rotating shaft is adjusted as follows:
4 motor shaft auxiliary fine-tuning devices 44 are uniformly distributed on the system base 5 in the circumferential direction. The end face of the screw of the motor shaft auxiliary fine-tuning device 44 is in contact with the rotary motor module 4, and the bidirectional fine-tuning of the rotary shaft of the system is realized by rotating the 4 motor shaft auxiliary fine-tuning devices 44. After the position of the rotary shaft is determined, the relative position of the rotary motor module 4 and the system base 5 is fixed through a screw.
The pitching axis adjustment related structure is positioned in the rotary motion platform. The fine adjustment means 44 is assisted by mounting 3 motor shafts on the outer circumference of the pitch motor mounting bracket 35. The end faces of the screws of the three motor shaft auxiliary fine adjustment devices 44 are in contact with the pitch motor 6. The auxiliary fine-tuning devices can achieve fine tuning of the pitching axis in the horizontal direction. And the motor shaft auxiliary fine-tuning device 44 and the plastic elastic support 36 jointly realize fine tuning of the pitching motor in the vertical direction. After the position of the tilt shaft is determined, the relative positions of the tilt motor 6 and the tilt motor mounting bracket 35 are fixed by screws.
The optical axis adjustment related structure is positioned in the optical path carrying platform 1 and the pitching motion platform 2. The distance of the optical axis in the horizontal direction is adjusted by rotating the pitching platform left and right fine adjustment knob 31 in the pitching motion platform 2. The distance in the direction perpendicular to the optical axis is adjusted by rotating the optical fine adjustment screw pair 28 in the optical path mounting platform 1. After the optical axis position is determined, the relative positions of the optical path carrying platform 1 and the pitching motion platform 2 are fixed through the laser head pitching fine adjustment frame 27 and the pitching fine adjustment fixing plate 33.
Drawings
FIG. 1 is a schematic view of a laser tracking and measuring mechanical system
FIG. 2 is a schematic view of an optical path mounting platform
FIG. 3 is a schematic view of the adjustment of the pitching motion platform, the revolving motion platform and the pitching axis
FIG. 4 is a schematic view of a rotary motor module and a rotary shaft adjusting platform
FIG. 5 is a schematic view of optical axis adjustment
In the figure: 1-light path carrying platform, 2-pitching motion platform, 3-revolving motion platform, 4-revolving motor module, 5-system base, 6-pitching motor, 7-standard ball, 8-standard ball fixing column, 9-optical platform, 10-laser frame, 11-wave plate frame, 12-optical element base, 13-reflector fixing frame left, 14-reflector fixing frame right, 15-optical element side top piece, 19-position sensitive detector supporting left, 20-position sensitive detector supporting right, 21-position sensitive detector adjusting bracket lower, 22-position sensitive detector adjusting bracket upper, 24-position sensitive detector fine-tuning screw, 25-measuring light path box, 26-lens frame, 27-laser head pitching fine-tuning bracket, 28-optical fine-tuning thread pair, 29-spherical center support, 30-pitching platform left and right displacement column, 31-pitching platform left and right fine-tuning nut, 32-new support motor connection, 33-pitching fine-tuning fixing plate, 34-shell frame connection, 35-rotary flange, 36-pitching motor mounting frame, 37-plastic elastic support, 38-motor line fixing frame, 39-rotary motor, 40-rotary motor fixing upper plate, 41-rotary motor fixing side plate, 42-rotary motor fixing bottom plate, 43-limit trigger module and 44-motor shaft auxiliary fine-tuning device.
Detailed Description
The invention is described in further detail below with reference to the figures and the detailed description. However, it should not be understood that the scope of the above-described subject matter of the present invention is limited to the following embodiments, and any technique realized based on the present invention is within the scope of the present invention.
As shown in fig. 1, the present invention is composed of an optical path carrying platform 1, a pitching motion platform 2, a revolving motion platform 3, a revolving motor module 4, a system base 5, a pitching motor 6, and a standard ball 7.
As shown in fig. 2, the optical path mounting platform 1 is composed of an optical platform 9, a laser frame 10, a wave plate frame 11, an optical element base 12, a reflector fixing frame left 13, a reflector fixing frame right 14, an optical element side top part 15, a position sensitive detector support left 19, a position sensitive detector support right 20, a position sensitive detector adjusting support lower 21, a position sensitive detector adjusting support upper 22, a position sensitive detector fine-tuning screw 24, a measurement optical path box 25, a lens frame 26, a laser head pitch fine-tuning frame 27, and an optical fine-tuning screw pair 28. The laser frame 10 and the reflector fixing frame left 13 are fixed on the left oblique edge of the optical platform 9 through screws, the measuring light path box 25 and the reflector fixing frame right 14 are fixed on the right oblique edge of the optical platform 9 through screws, and the laser frame 10 is symmetrically installed on the left oblique edge and the right oblique edge of the optical platform 9 through screws. The reflector is placed on the left reflector fixing frame 13 and the right reflector fixing frame 14, the V-shaped opening of the optical element side top piece 15 is propped against the right angle of the reflector, and the optical element side top piece 15 is fixed with the left reflector fixing frame 13 and the right reflector fixing frame 14 through screws. The wave plate frame 11, the optical element base 12 and the lens frame 26 are fixed on the horizontal plane of the optical platform 9 through screws, the polarization beam splitter is arranged on the optical element base 12 close to the lens frame 26, and the beam splitter is arranged on the other optical element base 12. The left position sensitive detector support 19 and the right position sensitive detector support 20 are respectively fixed on two sides of the extending end of the horizontal plane of the optical platform 9 through screws. The position sensitive detector fine adjustment screw 24 is arranged on the short side surface of the left 19 of the position sensitive detector support, and the lower 21 of the position sensitive detector adjustment support is arranged above the left 19 and the right 20 of the position sensitive detector support; another position sensitive detector fine adjustment screw 24 is screwed into a fine thread of the lower part 21 of the position sensitive detector adjusting bracket, the upper part 22 of the position sensitive detector adjusting bracket is arranged above the lower part 21 of the position sensitive detector adjusting bracket, and the position sensitive detector is fixed with the upper part 22 of the position sensitive detector adjusting bracket by screws; the horizontal position of the midpoint of the optical receiving surface of the position sensitive detector is adjusted by rotating two position sensitive detector fine adjustment screws 24, and after the adjustment is completed, the position sensitive detector is fixed by the screws on the lower part 21 of the position sensitive detector adjusting bracket and the upper part 22 of the position sensitive detector adjusting bracket, and the position sensitive detector adjusting bracket 22 and the relative positions of the position sensitive detector support left 19 and the position sensitive detector support right 20. The laser head pitching fine adjustment frame 27 is fixed at the tail part of the optical platform 9, and the optical fine adjustment thread pair 28 is arranged in the laser head pitching fine adjustment frame 27.
As shown in fig. 3, the pitching motion platform 2 is composed of a center support 29, a pitching platform left and right displacement column 30, a pitching platform left and right fine adjustment knob 31, a center support motor connection 32, a pitching fine adjustment fixing plate 33, and a housing frame connection 34. The left and right fine adjustment knobs 31 of the pitching platform are installed in threaded holes in the side faces of the left and right displacement columns 30 of the pitching platform, the left and right displacement columns 30 of the pitching platform are fixedly connected with the center ball support 29 through bolts, and the center ball support 29 and the center ball support motor are connected 32 and are fixed with the pitching motor 6 through screws. The pitch trimming fixing plate 33 is sandwiched between the housing frame connection 34 and the center support 29, the pitch trimming fixing plate 33, and the housing frame connection 34 are fixed by screws. The mounted optical path carrying platform 1 is placed on the pitching motion platform 2, and the extending part of the pitching fine adjustment fixing plate 33 is connected with the laser head pitching fine adjustment frame 27 in the optical path carrying platform 1 through a screw.
As shown in fig. 3, the rotary motion platform 3 is composed of a rotary flange 35, a pitch motor mounting bracket 36, a plastic elastic support 37, and a motor wire fixing bracket 38. The pitching motor mounting frame 36 is fixedly connected with the rotary flange 35 through screws, the plastic elastic support 37 is fixed on the pitching motor mounting frame 36, the pitching motor 6 is fixed on the pitching motor mounting frame 36, and the plastic elastic support 37 is supported on a shaft shoulder of the pitching motor 6. The motor wire holder 38 is mounted on the swivel flange 35 for organizing the cables leading out of the upper half of the fixing system.
As shown in fig. 4, the rotating electrical machine module 4 is composed of a rotating electrical machine 39, a rotating electrical machine fixing upper plate 40, a rotating electrical machine fixing side plate 41, a rotating electrical machine fixing bottom plate 42, and a limit trigger module 43. The rotary motor 39 is fixedly connected with the rotary motor fixing upper plate 40 through screws, and the rotary motor fixing side plate 41 is fixedly connected with the rotary motor fixing upper plate 40 and the rotary motor fixing bottom plate 42 through screws. The limit trigger module 43 is fixed on one of the rotary motor fixing side plates 41.
The pitch axis adjustment method is shown in fig. 3. The fine adjustment means 44 is assisted by mounting 3 motor shafts on the outer circumference of the pitch motor mounting bracket 35. The end faces of the screws of the three motor shaft auxiliary fine adjustment devices 44 are in contact with the pitch motor 6. The auxiliary fine-tuning devices can achieve fine tuning of the pitching axis in the horizontal direction. And the motor shaft auxiliary fine-tuning device 44 and the plastic elastic support 36 jointly realize fine tuning of the pitching motor in the vertical direction. After the position of the tilt shaft is determined, the relative positions of the tilt motor 6 and the tilt motor mounting bracket 35 are fixed by screws.
The method of rotating shaft adjustment is shown in fig. 4. The pivot axis is adjusted as follows. 4 motor shaft auxiliary fine-tuning devices 44 are uniformly distributed on the system base 5 in the circumferential direction. The end face of the screw of the motor shaft auxiliary fine-tuning device 44 is in contact with the rotary motor module 4, and the bidirectional fine-tuning of the rotary shaft of the system is realized by rotating the 4 motor shaft auxiliary fine-tuning devices 44. After the position of the rotary shaft is determined, the relative position of the rotary motor module 4 and the system base 5 is fixed through a screw.
The optical axis adjusting method is shown in fig. 5. The distance of the optical axis in the horizontal direction is adjusted by rotating the pitching platform left and right fine adjustment knob 31 in the pitching motion platform 2. The distance in the direction perpendicular to the optical axis is adjusted by rotating the optical fine adjustment screw pair 28 in the optical path mounting platform 1. After the optical axis position is determined, the relative positions of the optical path carrying platform 1 and the pitching motion platform 2 are fixed through the laser head pitching fine adjustment frame 27 and the pitching fine adjustment fixing plate 33.
The motion mode of laser tracking measurement mechanical system in this patent does: the pitching motion of the pitching motion platform 2 is driven by a pitching motor 6, and the horizontal rotation motion of the light path carrying platform 1, the pitching motion driving platform 3 and the rotation motion platform 3 is driven by a rotation motor.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention, and many modifications are possible in the present embodiments, as those skilled in the art will recognize. The general principles defined herein may be embodied in other specific embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A laser tracking measurement mechanical system with a folded light path is characterized in that: the device comprises a light path carrying platform (1), a pitching motion platform (2), a rotary motion platform (3), a rotary motor module (4) and a system base (5); the rotary motor module (4) is installed on the system base (5), the rotary motion platform (3) is installed on the rotary motor module (4), the pitching motor (6) is installed inside the rotary motion platform, the pitching motion platform is fixedly connected with the pitching motor (6) through a screw, and the light path carrying platform (1) is installed on the pitching motion platform (2); the center of the standard ball (7) is arranged at the intersection of the optical axis, the pitching axis and the three axes of the rotating shaft, and the standard ball is fixed on the system base (5) through a screw after being connected with the standard ball fixing column (8) through the screw thread of the standard ball (7).
2. The mechanical system for laser tracking measurement of a folded optical path according to claim 1, wherein: the optical path carrying platform (1) consists of an optical platform (9), a laser frame (10), a wave plate frame (11), an optical element base (12), a reflector fixing frame left (13), a reflector fixing frame right (14), an optical element side top piece (15), a position sensitive detector support left (19), a position sensitive detector support right (20), a position sensitive detector adjusting support lower (21), a position sensitive detector adjusting support upper (22), a position sensitive detector fine-tuning screw (24), a measuring optical path box (25), a lens frame (26), a laser head pitching fine-tuning frame (27) and an optical fine-tuning screw pair (28); the laser frame (10) and the left reflector fixing frame (13) are fixed on the left oblique side of the optical platform (9) through screws, the measuring light path box (25) and the right reflector fixing frame (14) are fixed on the right oblique side of the optical platform (9) through screws, and the laser frame (10) is symmetrically installed on the left oblique side and the right oblique side of the optical platform (9) through screws; the reflector is placed on the left reflector fixing frame (13) and the right reflector fixing frame (14), the V-shaped opening of the optical element side top piece (15) is propped against the right angle of the reflector, and the optical element side top piece (15) is fixed with the left reflector fixing frame (13) and the right reflector fixing frame (14) through screws; the wave plate frame (11), the optical element base (12) and the lens frame (26) are fixed on the horizontal plane of the optical platform (9) through screws, the polarization spectroscope is arranged on the optical element base (12) close to the lens frame (26), and the spectroscope is arranged on the other optical element base (12); the left position sensitive detector support (19) and the right position sensitive detector support (20) are respectively fixed on two sides of the extending end of the horizontal plane of the optical platform (9) through screws; a position sensitive detector fine adjustment screw (24) is arranged on the side surface of the short side of the left (19) of the position sensitive detector support, and then a position sensitive detector adjusting bracket lower part (21) is arranged above the left (19) of the position sensitive detector support and the right (20) of the position sensitive detector support; the other position sensitive detector fine-tuning screw (24) is screwed into a fine thread of the lower part (21) of the position sensitive detector adjusting bracket, then the upper part (22) of the position sensitive detector adjusting bracket is erected above the lower part (21) of the position sensitive detector adjusting bracket, and the position sensitive detector is fixed with the upper part (22) of the position sensitive detector adjusting bracket by the screw; the horizontal position of the midpoint of the optical receiving surface of the position sensitive detector is adjusted by rotating two position sensitive detector fine adjustment screws (24), and after the adjustment is finished, the position sensitive detector is fixed by the screws to the relative positions of the lower part (21) of the position sensitive detector adjusting bracket and the upper part (22) of the position sensitive detector adjusting bracket, the upper part (22) of the position sensitive detector adjusting bracket and the left (19) and the right (20) of the position sensitive detector support; the laser head pitching fine adjustment frame (27) is fixed at the tail part of the optical platform (9), and the optical fine adjustment thread pair (28) is arranged in the laser head pitching fine adjustment frame (27).
3. The mechanical system for laser tracking measurement of a folded optical path according to claim 1, wherein: the pitching motion platform (2) consists of a spherical center support (29), a pitching platform left and right displacement column (30), a pitching platform left and right fine adjustment knob (31), a spherical center support motor connection (32), a pitching fine adjustment fixing plate (33) and a shell frame connection (34); a left and right fine adjustment knob (31) of the pitching platform is arranged in a threaded hole on the side surface of a left and right displacement column (30) of the pitching platform, the left and right displacement column (30) of the pitching platform is fixedly connected with a spherical center support (29) through a bolt, and the spherical center support (29) is connected with a spherical center support motor (32) and is fixed with a pitching motor (6) through a screw; the pitching fine adjustment fixing plate (33) is clamped in the shell frame connection (34) and the spherical center support (29), the pitching fine adjustment fixing plate (33) and the shell frame connection (34) are fixed by screws; the mounted optical path carrying platform (1) is placed on the pitching motion platform (2), and the extending part of the pitching fine adjustment fixing plate (33) is connected with a laser head pitching fine adjustment frame (27) in the optical path carrying platform (1) through screws.
4. The mechanical system for laser tracking measurement of a folded optical path according to claim 1, wherein: the rotary motion platform (3) consists of a rotary flange (35), a pitching motor mounting rack (36), a plastic elastic support (37) and a motor wire fixing rack (38); the pitching motor mounting frame (36) is fixedly connected with the rotary flange (35) through a screw, the plastic elastic support (37) is fixed on the pitching motor mounting frame (36), the pitching motor (6) is fixed on the pitching motor mounting frame (36), and the plastic elastic support (37) is supported on a shaft shoulder of the pitching motor (6); the motor wire fixing frame (38) is arranged on the rotary flange (35) and used for arranging and fixing the cables led out from the upper half part of the system.
5. The mechanical system for laser tracking measurement of a folded optical path according to claim 1, wherein: the rotating shaft is adjusted as follows; 4 motor shaft auxiliary fine-tuning devices (44) are uniformly distributed on the system base (5) in the circumferential direction; the end face of a screw of the motor shaft auxiliary fine tuning device (44) is contacted with the rotary motor module (4), and the bidirectional fine tuning of a rotary shaft of the system is realized by rotating the 4 motor shaft auxiliary fine tuning devices (44); after the position of the rotary shaft is determined, the relative position of the rotary motor module (4) and the system base (5) is fixed through a screw.
6. The mechanical system for laser tracking measurement of a folded optical path according to claim 1, wherein: the pitching axis adjustment related structure is positioned in the rotary motion platform; three motor shaft auxiliary fine-tuning devices (44) are arranged on the outer circumference of the pitching motor mounting frame (35); the end surfaces of the screws of the three motor shaft auxiliary fine-tuning devices (44) are contacted with the pitching motor (6); wherein the first motor shaft auxiliary fine tuning device (44) and the third motor shaft auxiliary fine tuning device (44) realize fine tuning of the pitching axis in the horizontal direction; the second motor shaft auxiliary fine tuning device (44) and the plastic elastic support (36) jointly realize fine tuning of the pitching motor in the vertical direction; after the position of the pitching shaft is determined, the relative position of the pitching motor (6) and the pitching motor mounting frame (35) is fixed through a screw.
7. The mechanical system for laser tracking measurement of a folded optical path according to claim 1, wherein: the optical axis adjustment related structure is positioned in the optical path carrying platform (1) and the pitching motion platform (2); the distance of the horizontal direction of the optical axis is adjusted by rotating a left and right fine adjustment knob (31) of the pitching platform in the pitching motion platform (2); the distance in the vertical direction of the optical axis is adjusted by rotating an optical fine adjustment thread pair (28) in the optical path carrying platform (1); after the position of the optical axis is determined, the relative positions of the optical path carrying platform (1) and the pitching motion platform (2) are fixed at the pitching fine adjustment frame (27) and the pitching fine adjustment fixing plate (33) of the laser head.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210191793.4A CN114459354B (en) | 2022-02-28 | 2022-02-28 | Laser tracking and measuring mechanical system for folding light path |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210191793.4A CN114459354B (en) | 2022-02-28 | 2022-02-28 | Laser tracking and measuring mechanical system for folding light path |
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| CN114459354A true CN114459354A (en) | 2022-05-10 |
| CN114459354B CN114459354B (en) | 2024-05-28 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070024861A1 (en) * | 2005-07-26 | 2007-02-01 | Mitutoyo Corporation | Laser tracking interferometer |
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