CN209069824U - A kind of spectrophotometer grating drive system - Google Patents
A kind of spectrophotometer grating drive system Download PDFInfo
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- CN209069824U CN209069824U CN201821699099.9U CN201821699099U CN209069824U CN 209069824 U CN209069824 U CN 209069824U CN 201821699099 U CN201821699099 U CN 201821699099U CN 209069824 U CN209069824 U CN 209069824U
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- spectrophotometer
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Abstract
The utility model discloses a kind of spectrophotometer grating drive system, it includes grating assembly, wavelength electric machine assembly, spectrophotometer control module, position sensor and limited post, the gear sheet in wavelength gear and grating assembly in wavelength electric machine assembly is intermeshed, position sensor is located at the ultraviolet grating side in grating assembly, limited post is located at gear sheet side, and spectrophotometer control module is electrically connected with the wavelength motor in position sensor and wavelength electric machine assembly respectively；Spectrophotometer control module drives ultraviolet grating rotation with the mode activated wavelength motor rotation of 256 subdivisions, the rotation of wavelength gear band moving gear piece, gear reduction ratio 10:1, gear sheet.The utility model is combined using electronic fine-grained driving and gear sheet deceleration realizes that high-precision fine reaches grating and is accurately positioned.
Description
Technical field
The utility model relates to a kind of spectrophotometer grating drive systems.
Background technique
There are mainly two types of methods in the industry at present to realize that grating drives, and first method is fan-shaped using decelerating motor driving
Gear piece, the method precision and repeatability are poor, are only applicable to the very low instrument of wavelength accuracy；Second method is using mixed
Mould assembly motor driven high-precision screw rod drives the sine arm can to obtain higher precision, but the difficulty of processing of high-precision screw rod
Greatly, higher cost, and bigger noise can be generated, debugging difficulty is also higher in production process.
Utility model content
To solve the problems, such as high-precision control of the simple structure of fan-shaped gear piece to grating, the utility model provides a kind of light splitting
Photometer grating drive system is combined using electronic fine-grained driving and gear sheet deceleration and realizes that high-precision fine reaches grating essence
Determine position.
To achieve the above object, the utility model adopts the following technical solutions:
A kind of spectrophotometer grating drive system, it includes grating assembly, wavelength electric machine assembly, spectrophotometer control
Module, position sensor and limited post, the gear sheet in wavelength gear and grating assembly in wavelength electric machine assembly are intermeshed,
Position sensor is located at the ultraviolet grating side in grating assembly, and limited post is located at gear sheet side, and spectrophotometer controls mould
Block is electrically connected with the wavelength motor in position sensor and wavelength electric machine assembly respectively；Spectrophotometer control module is with 256
The mode activated wavelength motor of subdivision rotates, the rotation of wavelength gear band moving gear piece, gear reduction ratio 10:1, gear sheet band
Move ultraviolet grating rotation.
Further, grating assembly includes grating seat support, grating seat, ultraviolet grating, grating cover, gear sheet and shaft group
Part, grating seat support are spirally connected with grating seat, and ultraviolet grating is fixed on grating seat, grating cover, grating are fixed on ultraviolet grating
The bottom end of seat is spirally connected with rotating assembly, and the shaft of rotating assembly is flexibly connected with one end of gear sheet, is spirally connected in gear sheet with teeth
Piece locating piece is taken turns, is arranged with reduction torsion spring in the shaft of rotating assembly.
Further, wavelength electric machine assembly includes wavelength motor, wavelength motor mounting plate and wavelength gear, wavelength motor peace
On wavelength motor mounting plate, wavelength gear is installed on wavelength motor shaft.
Further, it when spectrophotometer control module is switched on, first controls gear sheet and is rotated clockwise simultaneously from limited post
Detection position sensor signal, then control gear sheet and rotate counterclockwise to the characteristic peak of lookup photometer ultraviolet source at 700nm.
Further, spectrophotometer control module receives control instruction, according to the corresponding angle of rotation of the wavelength value of setting
Degree is converted into the step number of the wavelength motor by calculating, to drive wavelength motor by rotating clockwise or counterclockwise.
The utility model has the advantages that
1. the utility model utilizes electronic circuit Multi-level microstep High-Order Accuracy Hybrid wavelength motor, wavelength motor drives height to subtract
The gear sheet of speed ratio is further segmented, and high precision and the high duplication positioning to grating angular position are reached.
2. the utility model structure is simple, it can achieve the control precision of high-precision screw rod and speed improved compared with screw rod
50%；Cost can reduce by 30%；Debugging difficulty is reduced, production hour 20% is saved；Noise when operation is greatly reduced.
Detailed description of the invention
Fig. 1 is the schematic diagram of the spectrophotometer grating drive system of the utility model；
Fig. 2 is the spectrophotometer grating driving schematic diagram of the utility model；
Fig. 3 is the grating assembly structural schematic diagram of the utility model；
Fig. 4 is the wavelength motor component structure schematic diagram of the utility model；
Fig. 5 is each component locations schematic diagram of spectrophotometer of the utility model；
In figure: 101- grating seat support, 102- grating seat, the ultraviolet grating of 103-, 104- grating cover, 105- gear sheet,
106- rotating assembly, 107- gear sheet locating piece, 108- reduction torsion spring, 109- cross recessed countersunk head sscrew, 1010-I type hexagonal spiral shell
Mother, 1011- First Canonical Form spring washer, the A grades of plain washers of 1012- the first, the first Cross Recess Head Screw of 1013-, 201- wave
Long motor, 202- wavelength motor mounting plate, 203- wavelength gear, the second Cross Recess Head Screw of 204-, 205- Second Canonical Form
Spring washer, the A grades of plain washers of 206- the 2nd, 4- position sensor, 5- limited post, 6- power supply, 7- lamp house, 8- fan, 9- sample
Room, the manual cell rack of 10-, 11- receiver, 12- monochromator.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
The utility model proposes a kind of spectrophotometer grating drive systems, and as shown in Figs. 1-2, it includes grating group
Part, wavelength electric machine assembly, spectrophotometer control module, position sensor 4 and limited post 5, the wavelength in wavelength electric machine assembly
Gear sheet 105 in gear 203 and grating assembly is intermeshed, and position sensor 4 is located at the ultraviolet grating 103 in grating assembly
Side, limited post 5 are located at 105 side of gear sheet, spectrophotometer control module respectively with position sensor 4 and wavelength motor
Wavelength motor 201 in component is electrically connected.In the present invention, spectrophotometer control module and position sensor 4 are
Common module on the market.
As shown in figure 3, grating assembly include grating seat support 101, grating seat 102, ultraviolet grating 103, grating cover 104,
Gear sheet 105 and rotating assembly 106, grating seat support 101 and grating seat 102 pass through cross recessed countersunk head sscrew 109, I type hexagonal
Nut 1010, First Canonical Form spring washer 1011 and the first A grades of plain washers 1012 connect, and pass through 704 gluings on grating seat 102
It has a ultraviolet grating 103, is fixed with grating cover 104, the bottom end of grating seat 102 and shaft group by 705 glue on ultraviolet grating 103
Part 106 is connected by the first Cross Recess Head Screw 1013, First Canonical Form spring washer 1011 and the first A grades of plain washers 1012
It connects, the shaft of rotating assembly 106 is flexibly connected with one end of gear sheet 105, and one end of gear sheet 105 passes through the first cross
Slot pan head screw 1013, First Canonical Form spring washer 1011 and the first A grades of plain washers 1012 are connect with rotating assembly 106, tooth
It takes turns and passes through the first Cross Recess Head Screw 1013, First Canonical Form spring washer 1011 and the first A grades of plain washers 1012 on piece 105
It is connected with gear sheet locating piece 107, reduction torsion spring 108 is arranged in the shaft of rotating assembly 106.
As shown in figure 4, wavelength electric machine assembly includes wavelength motor 201, wavelength motor mounting plate 202 and wavelength gear 203,
Wavelength motor 201 passes through the second Cross Recess Head Screw 204, Second Canonical Form spring washer 205 and the 2nd A grades of plain washers 206
It is mounted on wavelength motor mounting plate 202, wavelength is equipped with by the second Cross Recess Head Screw 204 on 201 axis of wavelength motor
Gear 203.
The function of the utility model is described as follows:
Spectrophotometer control module is rotated with the mode activated wavelength motor 201 of 256 subdivisions, and wavelength gear 203 drives
Gear sheet 105 rotates (reduction ratio 10:1), and gear sheet 105 drives ultraviolet grating 103 to rotate.
Initial alignment: it when spectrophotometer control module is switched on, first controls gear sheet 105 and turns clockwise from limited post 5
Dynamic and 4 signal of detection position sensor, then control gear sheet 105 rotate counterclockwise it is ultraviolet to photometer is begun looking at 700nm
The characteristic peak of light source finds characteristic peak and completes optics accurate positioning.
Change wavelength: spectrophotometer control module receives control instruction, according to the corresponding angle of rotation of the wavelength value of setting
Degree is converted into the step number of wavelength motor 201 by calculating, and to drive wavelength motor 201 by rotating clockwise or counterclockwise, completes
Wavelength shift.
As shown in figure 5, spectrophotometer includes power supply 6, lamp house 7, fan 8, sample room 9, manual cell rack 10, receives
Device 11, monochromator 12 and grating drive system (including ultraviolet grating 103 and wavelength motor 201).
Limitation to scope of protection of the utility model, those skilled in the art should understand that, in the skill of the utility model
On the basis of art scheme, the various modifications or variations that can be made by those skilled in the art with little creative work still exists
Within the protection scope of the utility model.
Claims (5)
1. a kind of spectrophotometer grating drive system, it includes grating assembly, wavelength electric machine assembly, spectrophotometer control mould
Block, position sensor (4) and limited post (5), it is characterised in that: wavelength gear (203) and institute in the wavelength electric machine assembly
Gear sheet (105) intermeshing in grating assembly is stated, the position sensor (4) is located at the ultraviolet light in the grating assembly
Grid (103) side, the limited post (5) are located at the gear sheet (105) side, the spectrophotometer control module respectively with
Wavelength motor (201) electrical connection in the position sensor (4) and the wavelength electric machine assembly；The spectrophotometer control
Molding block drives the gear with wavelength motor (201) rotation, the wavelength gear (203) described in the mode activated of 256 subdivisions
Piece (105) rotation, gear reduction ratio 10:1, the gear sheet (105) drive ultraviolet grating (103) rotation.
2. spectrophotometer grating drive system according to claim 1, it is characterised in that: the grating assembly includes light
Grid seat support (101), grating seat (102), ultraviolet grating (103), grating cover (104), gear sheet (105) and rotating assembly
(106), the grating seat support (101) is spirally connected with the grating seat (102), is fixed with the purple on the grating seat (102)
Outer grating (103) is fixed with the grating cover (104) on the ultraviolet grating (103), the bottom end of the grating seat (102) with
The rotating assembly (106) is spirally connected, and the shaft of the rotating assembly (106) is flexibly connected with one end of the gear sheet (105),
It is bolted with gear sheet locating piece (107) on the gear sheet (105), is arranged with reset in the shaft of the rotating assembly (106)
Torsional spring (108).
3. spectrophotometer grating drive system according to claim 1, it is characterised in that: the wavelength electric machine assembly packet
Wavelength motor (201), wavelength motor mounting plate (202) and wavelength gear (203) are included, the wavelength motor (201) is mounted on institute
It states on wavelength motor mounting plate (202), the wavelength gear (203) is installed on wavelength motor (201) axis.
4. spectrophotometer grating drive system according to claim 1, it is characterised in that: the spectrophotometer control
When module is switched on, first controls the gear sheet (105) and rotated clockwise at the limited post (5) and detect the position sensing
Device (4) signal, then control the gear sheet (105) and rotate counterclockwise to the characteristic peak of lookup photometer ultraviolet source at 700nm.
5. spectrophotometer grating drive system according to claim 1, it is characterised in that: the spectrophotometer control
Module receives control instruction, according to the corresponding rotational angle of the wavelength value of setting, is converted into the wavelength motor by calculating
(201) step number, to drive the wavelength motor (201) by rotating clockwise or counterclockwise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821699099.9U CN209069824U (en) | 2018-10-19 | 2018-10-19 | A kind of spectrophotometer grating drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821699099.9U CN209069824U (en) | 2018-10-19 | 2018-10-19 | A kind of spectrophotometer grating drive system |
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| Publication Number | Publication Date |
|---|---|
| CN209069824U true CN209069824U (en) | 2019-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821699099.9U Active CN209069824U (en) | 2018-10-19 | 2018-10-19 | A kind of spectrophotometer grating drive system |
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| CN (1) | CN209069824U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187402A (en) * | 2018-10-19 | 2019-01-11 | 上海美谱达仪器有限公司 | A kind of spectrophotometer grating drive system |
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2018
- 2018-10-19 CN CN201821699099.9U patent/CN209069824U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187402A (en) * | 2018-10-19 | 2019-01-11 | 上海美谱达仪器有限公司 | A kind of spectrophotometer grating drive system |
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