CN202836759U - Electric precise adjustable slit device possessing feedback function - Google Patents
Electric precise adjustable slit device possessing feedback function Download PDFInfo
- Publication number
- CN202836759U CN202836759U CN 201220411670 CN201220411670U CN202836759U CN 202836759 U CN202836759 U CN 202836759U CN 201220411670 CN201220411670 CN 201220411670 CN 201220411670 U CN201220411670 U CN 201220411670U CN 202836759 U CN202836759 U CN 202836759U
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- Prior art keywords
- flexible hinge
- adjustable slit
- bearing
- slit device
- feedback function
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Abstract
The utility model discloses an electric precise adjustable slit device possessing a feedback function, comprising an eccentric sheave driving system, a flexible hinge execution system, a sensor feedback system and a shell. The adjustable slit device is characterized in that a stepping motor is connected with a harmonic wave decelerator and drives an eccentric shaft via a diaphragm shaft coupling, the eccentric shaft is arranged on an eccentric wheel support, and a driving bearing is arranged in the middle of the eccentric shaft; an inner ring of the driving bearing is locked by a locking nut, and an eccentric shaft bearing is connected with a vertical driving shaft; the vertical driving shaft is indirectly contacted with a flexible hinge via a steel ball placed on a pad, and the flexible hinge is arranged on a pedestal and is equipped with a knife edge assembly and an LVDT displacement sensor. By employing the technical scheme of the utility model, the precision and optical property of the device are guaranteed; moreover, the electric precise adjustable slit device possessing the feedback function is reliable in structure and good in stability, at the same time, enables the precision and reliability to be improved and the maintenance to be reduced.
Description
Technical field
The utility model relates to optical instrument field, in particular to a kind of electronic accurate adjustable slit device with feedback function.
Background technology
The effect of slit (particularly entrance slit) in spectral instrument is very large.On imaging relations, spectrum line is the filtergram of entrance slit; On the relation of luminous energy transmission, entrance slit is the effective stop of the logical luminous energy of restriction.And exit slit only is to play a part the light hurdle.Slit is the important component part of grating monochromator, because the spectral line of the different wave length that spectral instrument obtains is the picture of entrance slit through forming after the whole optical system, so the performance of entrance slit directly affects serviceability and the quality of spectral instrument.As the vitals of monochromator, it comprises homogeneity, symmetry, repeatability and the resolution of its opening and compatibility and slit location and the attitude of environment to the performance impact of monochromator from the performance of slit itself.The slit mechanism of this programme design adopts stepper motor driven eccentric wheel structure to make the slit folding based on the flexible hinge structure, and the sealing size feeds back to the single-chip microcomputer adjusting driver by the LVDT displacement sensor, so forms a closed-loop system.Sensor output signal directly reflects the variation of sealing size, has effectively compensated the impact of the wide precision of error opposite joint of mechanical control system.
The utility model content
The purpose of this utility model is to overcome the above problem that prior art exists, and a kind of electronic accurate adjustable slit device with feedback function is provided.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the utility model is achieved through the following technical solutions:
A kind of electronic accurate adjustable slit device with feedback function, comprise the eccentric wheel drive system, the flexible hinge executive system, sensor feedback system and shell, described adjustable slit device connects harmonic speed reducer by stepper motor and drives camshaft by diaphragm coupling, described camshaft is installed on the eccentric wheel bearing, a driving bearing is installed in the middle of the described camshaft, the inner ring of described driving bearing is locked by set nut, described camshaft is connected with vertical drive shaft, the steel ball indirect contact flexible hinge of described vertical drive shaft by placing on the pad, described flexible hinge is installed in above the base, and it is left edge of a knife frame that edge of a knife assembly is installed on the described flexible hinge, right edge of a knife frame, blade and LVDT displacement transducer.
Further, be connected by connecting plate for electric motor between described stepper motor and the harmonic speed reducer, be connected by described diaphragm coupling between the output shaft of described harmonic speed reducer and the described camshaft, described camshaft two ends are equipped with spring bearing, and push down with clutch shaft bearing end cap and the second bearing (ball) cover.
Further, described eccentric wheel supporting seat is fixed on the erecting frame by four screws, the interstitial hole the inside of described eccentric wheel supporting seat and described erecting frame is equipped with guide copper sleeve, in the described guide copper sleeve vertical drive shaft is installed, and use spring supporting, and the upper end of described vertical drive shaft contacts with the outer rim of described driving bearing, and coupling sleeve is installed in the lower end of described vertical drive shaft, and use nut lock, described coupling sleeve lower end is steel ball.
Further, described flexible hinge topworks is connected with described eccentric wheel driven unit by described steel ball, described steel ball is installed in the upper end of described flexible hinge by pad, described flexible hinge is installed on the erecting frame by uniform bolt, and with the lower end periphery of described flexible hinge as locating surface, described flexible hinge is fixed on the above gland of described erecting frame with gland, all is provided with the seam of one fixed width in the middle of erecting frame and the flexible hinge.
Further, described edge of a knife assembly is fixed on the middle part of described flexible hinge, described two blades are fixed by screws on described left edge of a knife frame and the right edge of a knife frame, described left edge of a knife frame and right edge of a knife frame alternative arrangement are on described flexible hinge, and described LVDT displacement transducer is by left anchor clamps and right anchor clamps and described blade is parallel is installed on the described flexible hinge.
The beneficial effects of the utility model are:
Adopt technical solutions of the utility model, guaranteed precision and the logical optical property of described device, and reliable in structure, good stability has improved simultaneously precision, reliability and has reduced maintenance.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of instructions, below with preferred embodiment of the present utility model and cooperate accompanying drawing to be described in detail as follows.Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, consists of the application's a part, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model structure side cut-open view;
Fig. 3 is the utility model structure positive view;
Fig. 4 is the structural representation of the utility model blade organization.
Number in the figure explanation: 1, stepper motor, 2, connecting plate for electric motor, 5, harmonic speed reducer, 6, output shaft, 7, diaphragm coupling, 8, the clutch shaft bearing end cap, 11, the second bearing (ball) cover, 12, screw, 14, spring, 15, nut, 16, steel ball, 18, gland, 19, screw, 22, uniform bolt, 23, the eccentric wheel bearing, 24, set nut, 25, driving bearing, 26, camshaft, 31, vertical drive shaft, 32, guide copper sleeve, 33, coupling sleeve, 34, pad, 35, flexible hinge, 36, erecting frame, 37, left edge of a knife frame, 38, right edge of a knife frame, 39, blade, 41, left anchor clamps, 42, the LVDT displacement transducer, 43, right anchor clamps.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the utility model in detail.
As shown in the figure, a kind of electronic accurate adjustable slit device with feedback function, comprise the eccentric wheel drive system, the flexible hinge executive system, sensor feedback system and shell, described adjustable slit device connects harmonic speed reducer 5 by stepper motor 1 and drives camshaft 26 by diaphragm coupling 7, described camshaft 26 is installed on the eccentric wheel bearing 23, in the middle of the described camshaft 26 driving bearing 25 is installed, the inner ring of described driving bearing 25 is by set nut 24 lockings, described camshaft 26 is connected with vertical drive shaft 31, the steel ball 16 indirect contact flexible hinges 35 of described vertical drive shaft 31 by placing on the pad 34, described flexible hinge 35 is installed in above the base, and it is left edge of a knife frame 37 that edge of a knife assembly is installed on the described flexible hinge 35, right edge of a knife frame 38, blade 39 and LVDT displacement transducer 42.
Further, be connected by connecting plate for electric motor 2 between described stepper motor 1 and the harmonic speed reducer 5, be connected by described diaphragm coupling 7 between the output shaft 6 of described harmonic speed reducer 5 and the described camshaft 26, described camshaft 26 two ends are equipped with spring bearing, and push down with clutch shaft bearing end cap 8 and the second bearing (ball) cover 11.
Further, described eccentric wheel supporting seat 23 is fixed on the erecting frame 36 by four screws 12, described eccentric wheel supporting seat 23 is equipped with guide copper sleeve 32 with the interstitial hole the inside of described erecting frame 36, in the described guide copper sleeve 32 vertical drive shaft 31 is installed, and support with spring 14, the upper end of described vertical drive shaft 31 contacts with the outer rim of described driving bearing 25, the lower end installation coupling sleeve 33 of described vertical drive shaft 31, and with nut 15 locking, described coupling sleeve 33 lower ends are steel balls 16.
Further, described flexible hinge topworks is connected with described eccentric wheel driven unit by described steel ball 16, described steel ball is installed in the upper end of described flexible hinge 35 by pad 34, described flexible hinge 35 is installed on the erecting frame 36 by uniform bolt 22, and with the lower end periphery of described flexible hinge as locating surface, described flexible hinge is fixed on described erecting frame 36 the above gland 18 with gland 18, all is provided with the seam of one fixed width in the middle of erecting frame 36 and the flexible hinge 35.
Further, described edge of a knife assembly is fixed on the middle part of described flexible hinge 35, described two blades 39 are fixed on described left edge of a knife frame 37 and the right edge of a knife frame 38 by screw 19, described left edge of a knife frame 37 and right edge of a knife frame 38 alternative arrangement are on described flexible hinge 35, and described LVDT displacement transducer is by left anchor clamps 41 and right anchor clamps 43 and described blade 39 parallel being installed on the described flexible hinge 35.
Further, erecting frame is the whole outside framework of adjustable slit, is the external interface with measurement system incorporates, the parent that the part of other compositions is installed, the major control part of accuracy guarantee.Adopt the 2A12 aluminum alloy materials to guarantee to take into account the factors such as rigidity, vibration resistance, thermal deformation.The precision-fit position of installed surface manufactures when all adopting finishing, thereby further improves whole quality of fit.
Further, the flexible hinge executive system is to finish the parts that function realizes, adopts the quadrilateral flexure hinge mechanism to realize.The whole rigid material that adopts is to guarantee to take into account the factors such as rigidity, vibration resistance, thermal deformation.The precision-fit position of installed surface manufactures when all adopting finishing, thereby further improves whole quality of fit.Increase prestress in the slit mounting portion, guarantee can not change in the whole moving process.
Further, adopt the LVDT displacement transducer as feedback, determine the A/F of current slit.
Further, the slit edge pieces is processed into single right angle bevel blade, and the inclined-plane is back to incident light, and the light-gauge width of blade is less than 0.03mm, and for the not impact of image quality of high precision spectrograph, the edge of a knife is difficult for again producing breach on the other hand on the one hand.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1. electronic accurate adjustable slit device with feedback function, comprise the eccentric wheel drive system, the flexible hinge executive system, sensor feedback system and shell, described adjustable slit device connects harmonic speed reducer (5) by stepper motor (1) and drives camshaft (26) by diaphragm coupling (7), described camshaft (26) is installed on the eccentric wheel bearing (23), a driving bearing (25) is installed in the middle of the described camshaft (26), the inner ring of described driving bearing (25) is locked by set nut (24), described camshaft (26) is connected with vertical drive shaft (31), described vertical drive shaft (31) is by upper steel ball (16) the indirect contact flexible hinge (35) of placing of pad (34), described flexible hinge (35) is installed in above the base, and it is left edge of a knife frame (37) that edge of a knife assembly is installed on the described flexible hinge (35), right edge of a knife frame (38), blade (39) and LVDT displacement transducer (42).
2. the electronic accurate adjustable slit device with feedback function according to claim 1, it is characterized in that: be connected by connecting plate for electric motor (2) between described stepper motor (1) and the harmonic speed reducer (5), be connected by described diaphragm coupling (7) between the output shaft (6) of described harmonic speed reducer (5) and the described camshaft (26), described camshaft (26) two ends are equipped with spring bearing, and push down with clutch shaft bearing end cap (8) and the second bearing (ball) cover (11).
3. the electronic accurate adjustable slit device with feedback function according to claim 1, it is characterized in that: described eccentric wheel supporting seat (23) is fixed on the erecting frame (36) by four screws (12), described eccentric wheel supporting seat (23) is equipped with guide copper sleeve (32) with the interstitial hole the inside of described erecting frame (36), vertical drive shaft (31) is installed in the described guide copper sleeve (32), and support with spring (14), the upper end of described vertical drive shaft (31) contacts with the outer rim of described driving bearing (25), coupling sleeve (33) is installed in the lower end of described vertical drive shaft (31), and with nut (15) locking, described coupling sleeve (33) lower end is steel ball (16).
4. according to claim 1 or 3 described electronic accurate adjustable slit devices with feedback function, it is characterized in that: described flexible hinge topworks is connected with described eccentric wheel driven unit by described steel ball (16), described steel ball is installed in the upper end of described flexible hinge (35) by pad (34), described flexible hinge (35) is installed on the erecting frame (36) by uniform bolt (22), and with the lower end periphery of described flexible hinge as locating surface, described flexible hinge is fixed on the above gland of described erecting frame (36) (18) with gland (18), all is provided with the seam of one fixed width in the middle of erecting frame (36) and the flexible hinge (35).
5. the electronic accurate adjustable slit device with feedback function according to claim 1, it is characterized in that: described edge of a knife assembly is fixed on the middle part of described flexible hinge (35), described two blades (39) are fixed on described left edge of a knife frame (37) and the right edge of a knife frame (38) by screw (19), described left edge of a knife frame (37) and right edge of a knife frame (38) alternative arrangement are on described flexible hinge (35), and described LVDT displacement transducer is installed on the described flexible hinge (35) with described blade (39) is parallel by left anchor clamps (41) and right anchor clamps (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220411670 CN202836759U (en) | 2012-08-20 | 2012-08-20 | Electric precise adjustable slit device possessing feedback function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220411670 CN202836759U (en) | 2012-08-20 | 2012-08-20 | Electric precise adjustable slit device possessing feedback function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202836759U true CN202836759U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220411670 Expired - Fee Related CN202836759U (en) | 2012-08-20 | 2012-08-20 | Electric precise adjustable slit device possessing feedback function |
Country Status (1)
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| CN (1) | CN202836759U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630237A (en) * | 2012-08-20 | 2014-03-12 | 苏州生物医学工程技术研究所 | Electric precision adjustable slit device with feedback function |
| CN110285883A (en) * | 2019-06-27 | 2019-09-27 | 中国科学院西安光学精密机械研究所 | A kind of rotational electric slit |
-
2012
- 2012-08-20 CN CN 201220411670 patent/CN202836759U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630237A (en) * | 2012-08-20 | 2014-03-12 | 苏州生物医学工程技术研究所 | Electric precision adjustable slit device with feedback function |
| CN110285883A (en) * | 2019-06-27 | 2019-09-27 | 中国科学院西安光学精密机械研究所 | A kind of rotational electric slit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20130820 |