CN1044452C - Steel ball graduator - Google Patents
Steel ball graduator Download PDFInfo
- Publication number
- CN1044452C CN1044452C CN92111974A CN92111974A CN1044452C CN 1044452 C CN1044452 C CN 1044452C CN 92111974 A CN92111974 A CN 92111974A CN 92111974 A CN92111974 A CN 92111974A CN 1044452 C CN1044452 C CN 1044452C
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- CN
- China
- Prior art keywords
- graduator
- steel ball
- index dial
- graduation
- elastic ring
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- Expired - Fee Related
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The present invention relates to a steel ball graduator which belongs to a multi-tooth graduation device and ensures that the graduation value of a multi-tooth graduator can be changed. The locating surfaces of an upper graduator and a lower graduator are respectively provided with steel balls which have the same diameter and the same number; an upper elastic ring with a notch is tightly sheathed outside the steel balls of the upper graduator, and a lower elastic ring with a notch is tightly sheathed inside the steel balls of the lower graduator. One of each of the two groups of steel balls is fixed on the upper graduator and the lower graduator by a locating piece. The number of the steel balls can be directly increased or reduced to change the graduation value of the graduator. With high graduation accuracy, the graduator can be singly used as a precise processing and testing tool or can be used on the existing steel ball graduation table and a differential graduation table.
Description
The invention belongs to indexing means, the accurate steel balls calibration instrument of particularly a kind of processing and detection usefulness.
On April 1st, 1985, University Of Chongqing has submitted application for a patent for invention with " Erro-autocompensating index plate with steel balls " to Patent Office of the People's Republic of China, and fragrant paddy is artificially permitted in its invention, and application number is to be awarded patent for invention on March 23rd, 85101981.1,1988.This indexing means is made up of upper and lower two index dials, and two groups of equal steel balls of quantity adopt adhesive to be fixed on equably on the circumference of two index dials respectively.Respectively there is a steel ball to be maintained fixed constant relative position to bear moment of torsion with index dial separately in a certain way in two groups of steel balls.This index dial has utilized that Elastic Modulus of Adhesive is low, the yielding characteristics of stand under load, the steel ball of site error is compensated automatically, thereby obtains higher indexing accuracy.But there is following weak point in this index dial: will turn over a steel ball at least during owing to calibration, its scale division value equals 360 ° divided by the steel ball number, and steel ball is to stick with glue agent to be connected on the dish, so, after one pair of index dial manufacturing was finished, its scale division value had just been determined, can not have been adjusted in the use; Adhesive is a viscoelastic material, and its deformation process has comprised elasticity and plastic deformation, and plastic deformation is non-response permanent deformation.Distortion repeatedly will cause the physico mechanical characteristic of material to change, as resistance of deformation increase, fragility increase etc.In addition, the technique for sticking more complicated needs to eliminate rust, dewaters, operation such as sanding, impregnation, bonding and oven dry, and it is very difficult to obtain stabilized quality.
The present invention is directed to above-mentioned the deficiencies in the prior art, provide a kind of scale division value can adjust and the simple steel ball graduator of manufacturing process.
For achieving the above object, technical solution of the present invention is: in the location of upper and lower index dial and on be distributed with the steel ball that the diameter equal number equates respectively, each fixes a steel ball on the upper and lower index dial; Go up the outside that elastic ring tightly is enclosed within each steel ball of index dial jaggy, elastic ring down jaggy is tight against in the inboard of descending each steel ball of index dial; Upper and lower elastic ring respectively be fixed on upper and lower index dial on upper and lower fixed block connect.
The present invention compares with existing steel ball graduator, advantage is: since steel ball be along the radial elastic of index dial locating surface fix, therefore can be according to actual calibration needs, reach the purpose that changes scale division value by direct increase or the steel ball number that reduces in the upper and lower index dial.So the function of such index dial just is equivalent to the function of many existing steel ball graduators, and manufacturing process is simple, the indexing accuracy height.
Described in detail below in conjunction with accompanying drawing.Fig. 1 is the front view of this index dial, and Fig. 2 is its vertical view.
Upper and lower index dial is equipped with 36 of steel balls respectively.The quantity of steel ball must be in guaranteeing the intermeshing condition and range of steel ball, and this scope is determined jointly by the diameter of steel ball size and upper and lower index dial locating surface.A steel ball is respectively arranged with the fixing scale 0 line datum drift that scale division value changes and brings when preventing to increase and decrease steel ball number of the keeper 3 of band V-shaped groove formula in the upper and lower index dial.Last elastic ring 7 tightly is enclosed within the outside of index dial 9 each steel ball, and following elastic ring 6 is tight against the inboard at following index dial 1 each steel ball.The radially power of tightening up that elastic ring jaggy produces should satisfy condition: the axial friction that is produced by this power that tightens up is greater than the weight of steel ball, and steel ball does not fall when guaranteeing that index dial lifts.Last elastic ring 7 and following elastic ring 6 use respectively and encircle fixed block 8, encircle fixed block 5 down is connected on the upper and lower index dial.
When applying the concentric power of certain and index dial axis vertically, there is the steel ball of site error will be subjected to the effect of out-of-balance force and tangentially moves about with the site error of compensation steel ball, until whole engagements.At this moment,, satisfy " error of division circle closure principle " on the whole though there is error the position of each steel ball, in theory, the error of calibration is zero.Actual index dial although the influence of other factors is arranged, still can obtain very high indexing accuracy.The scale division value of index dial is 360 °/36=10 °; The indexing accuracy of actual measurement is: accumulative pitch error was less than ± 7.5 seconds.If pull down up and down index dial, directly on index dial up and down, increase or reduce the steel ball of equal number, just can change the scale division value of this index dial.For example, from up and down respectively taking out 6 steel balls the index dial, make up and down that index dial meshes again, then the scale division value of index dial becomes: 360 °/30=12 °, the indexing accuracy of actual measurement still is: accumulative pitch error was less than ± 7.5 seconds.By this index dial structure and steel ball size determine not destroy the be meshing with each other steel ball number of condition of steel ball be 27～36.Therefore, the function of such index dial just is equivalent to the function of 10 existing end tooth indexings, and makes simple indexing accuracy height.This steel ball graduator is a kind of general indexing means, can be used for steel ball graduation platform or differential steel ball graduation platform.
Claims (3)
1. a steel ball graduator comprises upper and lower index dial, is distributed with the steel ball that the diameter equal number equates on the locating surface of upper and lower index dial respectively, and each fixes a steel ball on the upper and lower index dial; It is characterized in that go up the outside that elastic ring tightly is enclosed within each steel ball of index dial jaggy, elastic ring down jaggy is tight against in the inboard of descending each steel ball of index dial; Upper and lower elastic ring respectively be fixed on upper and lower index dial on upper and lower fixed block connect.
2. steel ball graduator according to claim 1 is characterized in that the steel ball graduation platform is equipped with steel ball graduator.
3. steel ball graduator according to claim 1 is characterized in that the differential indexing platform is equipped with steel ball graduator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92111974A CN1044452C (en) | 1992-11-03 | 1992-11-03 | Steel ball graduator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92111974A CN1044452C (en) | 1992-11-03 | 1992-11-03 | Steel ball graduator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1075672A CN1075672A (en) | 1993-09-01 |
| CN1044452C true CN1044452C (en) | 1999-08-04 |
Family
ID=4945667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92111974A Expired - Fee Related CN1044452C (en) | 1992-11-03 | 1992-11-03 | Steel ball graduator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1044452C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI608892B (en) * | 2016-01-21 | 2017-12-21 | Tool table indexing device | |
| CN111872541A (en) * | 2020-07-29 | 2020-11-03 | 中国航空制造技术研究院 | Indexing device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102218673A (en) * | 2011-05-23 | 2011-10-19 | 安宁华创机械制造有限公司 | Control driving plate for depth of cut |
| CN103624612B (en) * | 2013-11-29 | 2015-10-28 | 大连理工大学 | A kind of method for processing and assembling of high accuracy many balls calibration-positioner |
| CN116223849B (en) * | 2022-12-02 | 2023-10-20 | 廊坊市北斗神舟测控仪器有限公司 | Quartz flexible acceleration sensor scale factor test fixture |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85101981A (en) * | 1985-04-01 | 1987-01-10 | 重庆大学 | Erro-autocompensating index plate with steel balls |
| CN87203027U (en) * | 1987-03-07 | 1987-12-26 | 沈阳第一机床厂 | Rotating positioning-device |
| WO1991006396A2 (en) * | 1989-10-24 | 1991-05-16 | Lk Limited | Determination of spacial relationships |
-
1992
- 1992-11-03 CN CN92111974A patent/CN1044452C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85101981A (en) * | 1985-04-01 | 1987-01-10 | 重庆大学 | Erro-autocompensating index plate with steel balls |
| CN87203027U (en) * | 1987-03-07 | 1987-12-26 | 沈阳第一机床厂 | Rotating positioning-device |
| WO1991006396A2 (en) * | 1989-10-24 | 1991-05-16 | Lk Limited | Determination of spacial relationships |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI608892B (en) * | 2016-01-21 | 2017-12-21 | Tool table indexing device | |
| CN111872541A (en) * | 2020-07-29 | 2020-11-03 | 中国航空制造技术研究院 | Indexing device |
| CN111872541B (en) * | 2020-07-29 | 2021-12-10 | 中国航空制造技术研究院 | Indexing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1075672A (en) | 1993-09-01 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |