CN204422207U - A kind of pick-up unit of gyration transmission accuracy - Google Patents
A kind of pick-up unit of gyration transmission accuracy Download PDFInfo
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- CN204422207U CN204422207U CN201520156699.0U CN201520156699U CN204422207U CN 204422207 U CN204422207 U CN 204422207U CN 201520156699 U CN201520156699 U CN 201520156699U CN 204422207 U CN204422207 U CN 204422207U
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- revolving shaft
- circular gratings
- pick
- unit
- transmission accuracy
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Abstract
The utility model discloses a kind of pick-up unit of gyration transmission accuracy, for detecting the transmission accuracy of revolving shaft (100); Pick-up unit comprises Circular gratings measurement module (1) and from quasi-optical instrument (2); Circular gratings measurement module (1) comprises Circular gratings (11); Circular gratings (11) is circular ring structure, and Circular gratings (11) and revolving shaft (100) are coaxially arranged; Polygon prism (21) and auto-collimation collimator (22) is comprised from quasi-optical instrument (2); The xsect of polygon prism (21) is regular polygon, and polygon prism (21) and revolving shaft (100) are coaxially arranged.Enforcement the beneficial effects of the utility model are: described pick-up unit adopts Circular gratings measurement module and the structure from quasi-optical instrument, effectively can isolate the driving error composition caused by eccentric error, in order to instruct the processes such as the revolution design of kinematic train, manufacture and assembling, be the transmission accuracy improving revolution kinematic train and foundation is provided.
Description
Technical field
The utility model relates to technical field of vision detection, more particularly, relates to a kind of pick-up unit of gyration transmission accuracy.
Background technology
At present, device such as Circular gratings and the autocollimator of known metrical error can both be used for the transmission accuracy detecting gyration.
Circular gratings is when measuring, and light source, after light path system, can become directional light, on the indication grating being incident upon Circular gratings and key light grid, through key light grid through light can form Moire fringe.Photosensitive tube receives the light signal that transmission is come, and can form pulse signal after treatment, by umber of pulse total in gage work process, then can obtain the driving error of rotating object.
Autocollimator is when detecting, if catoptron is vertical in optical axis, light through the cross curve on object lens, and when being reflected back through object lens, returns by former road, and after object lens, still imaging resembles at former cross curve, overlaps with former target.If reflector position and optical axis produce, then the light after reflection, cross curve resembles a just necessary corresponding displacement Δ s, and it just can be made to overlap with former target, and is Δ α by the oblique angle of Δ s release catoptron.By reflection law and geometric optical theory, light its deflection after catoptron is 2 times of mirror tilt angle.
Because the distance between light pipe and minute surface is not strict with, namely in effective range, far point near point testing result is all the same, eccentric error is had to deposit in case at revolving shaft, prism often turns over certain angle, the gap just between minute surface and light pipe between vertical range that eccentric error brings, and deflection can not be produced, namely without acceptance of persons under state and under having eccentric state, after rotating to an angle, minute surface is all parallel, and there is no relative angle, namely inspection does not measure the drive system error caused by the eccentric error of revolving shaft.
Utility model content
The technical problems to be solved in the utility model is, effectively can not detect the defect of the driving error caused by eccentric error of revolving shaft for the above-mentioned detection device of prior art, a kind of pick-up unit can isolating gyration transmission accuracy because of the driving error caused by eccentric error is provided.
The utility model solves the technical scheme that its technical matters adopts: the pick-up unit constructing a kind of gyration transmission accuracy, for detecting the transmission accuracy of revolving shaft; Described pick-up unit comprises Circular gratings measurement module and from quasi-optical instrument; Wherein, described Circular gratings measurement module comprises the Circular gratings be sleeved on described revolving shaft outer circumference surface; Described Circular gratings is circular ring structure, and described Circular gratings and described revolving shaft are coaxially arranged;
Describedly comprise from quasi-optical instrument the polygon prism be sleeved on described revolving shaft outer circumference surface, and the auto-collimation collimator relative with described polygon prism position; The xsect of described polygon prism is regular polygon, and described polygon prism and described revolving shaft are coaxially arranged.
In the pick-up unit of gyration transmission accuracy described in the utility model, described regular polygon is positive 30 hexagons.
In the pick-up unit of gyration transmission accuracy described in the utility model, described Circular gratings is sleeved on the medium position of described revolving shaft outer circumference surface.
In the pick-up unit of gyration transmission accuracy described in the utility model, described polygon prism is sleeved on the end position of described revolving shaft outer circumference surface.
In the pick-up unit of gyration transmission accuracy described in the utility model, described Circular gratings is connected on the outer circumference surface of described revolving shaft.
In the pick-up unit of gyration transmission accuracy described in the utility model, described polygon prism is connected on the outer circumference surface of described revolving shaft.
Implement the pick-up unit of gyration transmission accuracy of the present utility model, there is following beneficial effect: described pick-up unit adopts Circular gratings measurement module and the structure from quasi-optical instrument, while can detecting the driving error of revolving shaft accurately and effectively, effectively can also isolate the driving error composition caused by eccentric error, and then through the eccentric error value obtaining revolving shaft that converts, in order to instruct the design of revolution kinematic train, the processes such as manufacture and assembling, thus reduce the eccentric error of revolving shaft targetedly, be the transmission accuracy improving revolution kinematic train and foundation is provided.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Perspective view when Fig. 1 is the transmission accuracy of the pick-up unit detection revolving shaft of the gyration transmission accuracy that the utility model preferred embodiment provides.
Embodiment
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
As shown in Figure 1, preferred embodiment of the present utility model provides a kind of pick-up unit of gyration transmission accuracy, and for detecting the transmission accuracy of revolving shaft 100, it comprises Circular gratings measurement module 1 and from quasi-optical instrument 2.In the present embodiment, in order to can by the Transmission Error Measuring caused by the eccentric error of revolving shaft 100 out, described pick-up unit adopts Circular gratings 11 that system accuracy is suitable and autocollimator to detect the driving error of revolving shaft 100 gyration simultaneously simultaneously, because autocollimator can not detect the composition in revolving shaft 100 driving error caused by bias, so Circular gratings 11 and autocollimator detect that the difference of the gyration driving error of revolving shaft 100 is exactly the turn error that the eccentric error of revolving shaft 100 causes between the two.
Particularly, as shown in Figure 1, Circular gratings measurement module 1 is for detecting the driving error of revolving shaft 100, it comprises the structures such as Circular gratings 11, light source (not shown), signal processing unit (not shown) and display unit (not shown), and the driving error of revolving shaft 100 is shown by display unit.Circular gratings 11 is sleeved on revolving shaft 100 outer circumference surface, and it is circular ring structure, and Circular gratings 11 and revolving shaft 100 are coaxially arranged.In the present embodiment, Circular gratings 11 is sleeved on the medium position of revolving shaft 100 outer circumference surface.In other embodiment of the present utility model, Circular gratings 11 is sleeved on other position of revolving shaft 100 outer circumference surface, only needs the right alignment ensureing Circular gratings 11 and revolving shaft 100.Circular gratings 11 can adopt the mode on the outer circumference surface being connected to revolving shaft 100, to make on its outer circumference surface being sleeved on revolving shaft 100.In other embodiment of the present utility model, Circular gratings 11 can also adopt alternate manner to make on its outer circumference surface being sleeved on revolving shaft 100.In this embodiment, Circular gratings 11 in Circular gratings measurement module 1, light source (not shown), signal processing unit (not shown) and display unit (not shown) are structure common in prior art, do not repeat them here.
As shown in Figure 1, from quasi-optical instrument 2 for detecting the driving error of revolving shaft 100, it comprises the structures such as polygon prism 21, auto-collimation collimator 22, signal processing unit (not shown) and display unit (not shown).This polygon prism 21 is sleeved on revolving shaft 100 outer circumference surface, and this auto-collimation collimator 22 is relative with polygon prism 21 position.In the present embodiment, the xsect of polygon prism 21 is regular polygon, and polygon prism 21 and revolving shaft 100 are coaxially arranged.Namely preferably, regular polygon is positive 30 hexagons, and also the side of polygon prism 21 is enclosed by 36 identical rectangles and forms.In other embodiment of the present utility model, regular polygon is not limited to positive 30 hexagons, and it can also have other quantity to select.In this embodiment, polygon prism 21 is sleeved on the end position of revolving shaft 100 outer circumference surface.Polygon prism 21 can adopt the mode on the outer circumference surface being connected to revolving shaft 100, to make on its outer circumference surface being sleeved on revolving shaft 100.In other embodiment of the present utility model, Circular gratings 11 can also adopt alternate manner to make on its outer circumference surface being sleeved on revolving shaft 100.In this embodiment, the polygon prism 21 in quasi-optical instrument 2, auto-collimation collimator 22, signal processing unit (not shown) and display unit (not shown) are structure common in prior art, do not repeat them here.
When utilizing above-mentioned detection device to detect the driving error of revolving shaft 100, because the catoptron of 36 in polygon prism 21 is evenly distributed on revolving shaft 100, also namely revolving shaft 100 often rotates 10 °, detect once from quasi-optical instrument 2 and record data, Circular gratings measurement module 1 also records data simultaneously.In testing process, revolving shaft 100 often rotates 10 °, and Circular gratings measurement module 1 and the difference of data detected by quasi-optical instrument 2, be the driving error caused by eccentric error of revolving shaft 100.
Use the pick-up unit as above described in embodiment, because described pick-up unit adopts Circular gratings measurement module 1 and the structure from quasi-optical instrument 2, when the driving error of revolving shaft can be detected accurately and effectively, effectively can isolate the driving error composition caused by eccentric error, and then through the eccentric error value obtaining revolving shaft 100 that converts, in order to instruct the processes such as the revolution design of kinematic train, manufacture and assembling, thus reduce the eccentric error of revolving shaft 100 targetedly, be the transmission accuracy improving revolution kinematic train and foundation is provided.
By reference to the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; do not departing under the ambit that the utility model aim and claim protect, also can make a lot of form, these all belong within protection of the present utility model.
Claims (6)
1. a pick-up unit for gyration transmission accuracy, for detecting the transmission accuracy of revolving shaft (100); It is characterized in that: described pick-up unit comprises Circular gratings measurement module (1) and from quasi-optical instrument (2); Wherein, described Circular gratings measurement module (1) comprises the Circular gratings (11) be sleeved on described revolving shaft (100) outer circumference surface; Described Circular gratings (11) is circular ring structure, and described Circular gratings (11) and described revolving shaft (100) are coaxially arranged;
Describedly comprise from quasi-optical instrument (2) polygon prism (21) be sleeved on described revolving shaft (100) outer circumference surface, and the auto-collimation collimator (22) relative with described polygon prism (21) position; The xsect of described polygon prism (21) is regular polygon, and described polygon prism (21) and described revolving shaft (100) are coaxially arranged.
2. the pick-up unit of gyration transmission accuracy according to claim 1, is characterized in that: described regular polygon is positive 30 hexagons.
3. the pick-up unit of gyration transmission accuracy according to claim 1, is characterized in that: described Circular gratings (11) is sleeved on the medium position of described revolving shaft (100) outer circumference surface.
4. the pick-up unit of gyration transmission accuracy according to claim 1, is characterized in that: described polygon prism (21) is sleeved on the end position of described revolving shaft (100) outer circumference surface.
5. the pick-up unit of gyration transmission accuracy according to claim 1, is characterized in that: described Circular gratings (11) is connected on the outer circumference surface of described revolving shaft (100).
6. the pick-up unit of gyration transmission accuracy according to claim 1, is characterized in that: described polygon prism (21) is connected on the outer circumference surface of described revolving shaft (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520156699.0U CN204422207U (en) | 2015-03-19 | 2015-03-19 | A kind of pick-up unit of gyration transmission accuracy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520156699.0U CN204422207U (en) | 2015-03-19 | 2015-03-19 | A kind of pick-up unit of gyration transmission accuracy |
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| Publication Number | Publication Date |
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| CN204422207U true CN204422207U (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520156699.0U Expired - Fee Related CN204422207U (en) | 2015-03-19 | 2015-03-19 | A kind of pick-up unit of gyration transmission accuracy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186502A (en) * | 2018-08-21 | 2019-01-11 | 天津大学 | Circle high accuracy positioning rotary table and method based on photoelectric auto-collimator |
| CN112097641A (en) * | 2020-08-28 | 2020-12-18 | 天津津航技术物理研究所 | Positioning precision measuring device and measuring method for push-out type photoelectric equipment |
-
2015
- 2015-03-19 CN CN201520156699.0U patent/CN204422207U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109186502A (en) * | 2018-08-21 | 2019-01-11 | 天津大学 | Circle high accuracy positioning rotary table and method based on photoelectric auto-collimator |
| CN112097641A (en) * | 2020-08-28 | 2020-12-18 | 天津津航技术物理研究所 | Positioning precision measuring device and measuring method for push-out type photoelectric equipment |
| CN112097641B (en) * | 2020-08-28 | 2023-05-23 | 天津津航技术物理研究所 | Positioning accuracy measuring device and measuring method for push-out type photoelectric equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20160319 |