CN85101981B - Erro-autocompensating index plate with steel balls - Google Patents
Erro-autocompensating index plate with steel balls Download PDFInfo
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- CN85101981B CN85101981B CN85101981A CN85101981A CN85101981B CN 85101981 B CN85101981 B CN 85101981B CN 85101981 A CN85101981 A CN 85101981A CN 85101981 A CN85101981 A CN 85101981A CN 85101981 B CN85101981 B CN 85101981B
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- steel ball
- dish
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The present invention relates to an error-auto-compensating index plate with steel balls, which is composed of two steel ball plate distributed uniformly, wherein the position of one steel ball in a steel ball group of each plate is fixed without change to the plate, and other steel balls are connected with the plate by adhesives and are uniformly distributed on a circumference. When the two plates are meshed, and axial direction force which is pressed downward in parallel is applied to the two plates, a steel ball which has position error can offset slightly due to the unbalanced external force so as to automatically compensate the error. Thus, the present invention can have high circumferential indexing precision. With the advantages of simple structure, short manufacturing cycle, low cost, etc., the index plate can obtain high economic benefit and has high generalization value.
Description
The invention belongs to the mechanical type angular indexing device.
The present invention is a kind of Erro-autocompensating index plate with steel balls group.The prior art close with the present invention is to deliver " trial-production of steel ball locating indexing disc " China's " building-block machine " magazine the 2nd phase in 1976, U.S. Pat-3177740, US-369984 and Japan's special permission communique: clear 56-49695, clear 58-27057, they all belong to rigidity solid matter steel ball graduator, all be to have upper dish, lower wall and steel ball group, and upward dish is rotating, lower wall is fixed.Two steel ball groups are installed in respectively coils uniform between positioning cylinder side and the planar annular and intermeshes, and steel ball size equates and its number equals required five equilibrium number or its integral multiple in each steel ball group, and its diameter is selected with the diameter that coils and matched.The indexing accuracy of this kind index dial depends primarily on the accuracy of manufacture, foozle directly affects indexing accuracy, the diameter of the cylinder locating surface of requirement dish should satisfy the requirement of steel ball solid matter in the manufacturing, so the processing of cylinder locating surface diameter needs repeatedly grinding and test and trial assembly to join, therefore difficulty of processing is big, man-hour is long, the cost height.
The object of the present invention is to provide a kind of manufacturing simple, technological requirement is low, can reach the index dial group of very high precision.
Technical solution of the present invention is: a kind of Erro-autocompensating index plate with steel balls group is by upper dish (1) and lower wall (3), and be installed in and coil respectively that uniform and intermeshing two steel ball groups form between positioning cylinder side and the planar annular, all have in each steel ball group one with the dish the changeless steel ball of relative position, steel ball size equates and its number equals required five equilibrium number or its integral multiple in each steel ball group, and steel ball has joins mutually And with each dish positioning cylinder diameter and make the diameter that a steel ball is meshed with two steel balls in another steel ball group respectively in each steel ball group.Special character of the present invention is to have equal interval between the steel ball in each steel ball group of upper and lower dish; Steel ball adopts adhesive to be combined between dish; Keep a steel ball and dish relative position changeless device by two have prevent steel ball do the spacer pin (5) of circumferencial direction skew and adjusting and fixedly the adjustment screw (4) of spacer pin (5) axial location formed.
Index dial group of the present invention is compared with existing solid matter steel ball graduator, it can allow each steel ball to produce small skew under unbalanced External Force Acting, thereby produce the effect of error auto compensatng, so this index dial group can meet or exceed the precision of existing mechanical type index dial or dividing head, generally can reach the several angle of the error precision of second.Note to improve in the situation of the accuracy of manufacture, even can reach error and be no more than 1 angle second.Steel ball locating surface of the present invention is only required certain geometric accuracy (cylindricity, flatness) and is not required dimensional accuracy, so saving of work and time when making, general midget plant all can make.Upper and lower dish (1), (3) are after taking suitable technological measure, can improve without heat treatment the hardness of locating surface, so when making, upper and lower dish (1), (3) are therefore compared with existing solid matter steel ball graduator as long as can carry out without grinding machine precision turning.The present invention makes simply; Technological requirement is not high; Characteristic with error auto compensatng; Can reach very high circumference equal dividing precision; Especially good for branch adaptability such as any prime numbers.
Accompanying drawing 1 is the structure chart of error auto compensatng steel index dial group.
Accompanying drawing 2 is the top view of its structure chart.
Accompanying drawing 3 is the A-A cutaway view.
Index dial structure of the present invention as shown in Figure 1, it is made up of a fixing lower wall (3) and a rotating upper dish (1) and steel ball group (2), have the interval that equates between steel ball and the steel ball of the steel ball group of each dish, between steel ball (2) and dish (1), (3) in conjunction with the employing adhesive.The steel ball number of each dish equals required five equilibrium number (arbitrary finite integer) or its integral multiple, select suitable steel ball size to cooperate the diameter of dish, the contact point of a steel ball and dish is separately all arranged more than 2 in the steel ball group of each dish, namely increase to 4 contact points; Purpose is to guarantee that this steel ball always immobilizes with the relative position that coils under any condition.Keep one of scheme of four contact points can be referring to accompanying drawing 3, prevent that by two bevelled spacer pins of tool (5) steel ball from doing the skew of circumferencial direction, adjustment screw (4) be used for regulating and the fixing axial location of spacer pin (5).Upper and lower dish turns over when again meshing behind the certain angle relatively should apply certain parallel axial force of depressing, and forces the steel ball skew of site error, until all steel balls all come in contact.
Claims (1)
1, Erro-autocompensating index plate with steel balls group, by upper dish (1) and lower wall (3), and be installed in and coil respectively that uniform and intermeshing two steel ball groups form between positioning cylinder side and the planar annular, all have in each steel ball group one with the dish the changeless steel ball of relative position, steel ball size equates and its number equals required five equilibrium number or its integral multiple in each steel ball group, and steel ball has joins mutually And with each dish positioning cylinder diameter and make the diameter that a steel ball is meshed with two steel balls in another steel ball group respectively in each steel ball group.It is characterized in that: have equal interval between the steel ball in each steel ball group of upper and lower dish; Steel ball adopts adhesive to be combined between dish; Keep a steel ball and dish relative position changeless device by two have prevent steel ball do the spacer pin (5) of circumferencial direction skew and adjusting and fixedly the adjustment screw (4) of spacer pin (5) axial location formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85101981A CN85101981B (en) | 1985-04-01 | 1985-04-01 | Erro-autocompensating index plate with steel balls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85101981A CN85101981B (en) | 1985-04-01 | 1985-04-01 | Erro-autocompensating index plate with steel balls |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85101981A CN85101981A (en) | 1987-01-10 |
| CN85101981B true CN85101981B (en) | 1987-12-02 |
Family
ID=4792180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85101981A Expired CN85101981B (en) | 1985-04-01 | 1985-04-01 | Erro-autocompensating index plate with steel balls |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85101981B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044452C (en) * | 1992-11-03 | 1999-08-04 | 陈兵奎 | Steel ball graduator |
| 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 |
| CN102554701B (en) * | 2012-03-07 | 2015-02-18 | 天津大学 | Method and device for compensating indexing error of machine tool |
| 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 |
| JP2017127944A (en) * | 2016-01-21 | 2017-07-27 | 昌弘 町田 | Indexing device of tool post |
-
1985
- 1985-04-01 CN CN85101981A patent/CN85101981B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85101981A (en) | 1987-01-10 |
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| PB01 | Publication | ||
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| C13 | Decision | ||
| GR02 | Examined patent application | ||
| 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 |