CN201833081U - Gapless quick outside diameter positioning tool - Google Patents
Gapless quick outside diameter positioning tool Download PDFInfo
- Publication number
- CN201833081U CN201833081U CN2010205903204U CN201020590320U CN201833081U CN 201833081 U CN201833081 U CN 201833081U CN 2010205903204 U CN2010205903204 U CN 2010205903204U CN 201020590320 U CN201020590320 U CN 201020590320U CN 201833081 U CN201833081 U CN 201833081U
- Authority
- CN
- China
- Prior art keywords
- placenta
- hole
- stepped hole
- positioning tool
- retainer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a gapless quick outside diameter positioning tool, which comprises a placenta and a retainer. A placenta inner hole and a placenta step hole are arranged in the placenta; a placenta inner step is formed on the placenta at the joint between the placenta step hole and the placenta inner hole; the placenta inner hole and the placenta step hole are arranged coaxially; the diameter of the placenta step hole is more than that of the placenta inner hole; the placenta inner step is provided with a workpiece fastening hole; at least two layers of balls with the same diameter are arranged in the retainer; the retainer is positioned on the placenta inner step at the outer side of the workpiece fastening hole; and the balls lean against the inner wall of the placenta step hole. The gapless quick outside diameter positioning tool can effectively and reliably fix a workpiece, and greatly improves the stability of processing quality.
Description
Technical field
The utility model relates to a kind of positioning tool, is specially the quick external diameter positioning tool in a kind of no gap.
Background technology
When processing internal tooth on gear shapping machine, when requiring the relative workpiece external diameter of gear ring pitch circle circular runout to be benchmark, this just requires reliable external diameter positioning fixture.
1. do the placenta of a stepped hole, stepped hole (macropore) is a matched in clearance with the workpiece external diameter.This mode is can be satisfactory to the form and position tolerance of processing general requirement.Because gapped, so be infeasible for high requirement.And this mode is very difficult when assembling for big workpiece.
2. for the higher workpiece of Geometrical Tolerance Principle, just can only adopt school accent mode to process, i.e. the mode processing parts on centering external diameter, centering plane.This mode is for small lot, and single-piece work is fine, but for the part of batch machining, this mode is more loaded down with trivial details, has a strong impact on working (machining) efficiency.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of locate accurate, the quick external diameter positioning tool in repeatable accuracy no gap high, that be applicable to batch process are provided.
The technical scheme that provides according to the utility model, the quick external diameter positioning tool in described no gap, it comprises placenta and retainer, in placenta, offer placenta endoporus and placenta stepped hole, on the placenta of placenta stepped hole and placenta endoporus junction, form step in the placenta, described placenta endoporus is coaxial setting with the placenta stepped hole, and the diameter of placenta stepped hole offers the workpiece fastener hole greater than the diameter of placenta endoporus on the step in placenta; At least be provided with the identical ball of two-layer diameter in the described retainer, on the step, described ball is against on the inwall of placenta stepped hole the maintenance stand in the placenta in the workpiece fastener hole outside.
The utlity model has following advantage:
1, can be effectively, fixation workpiece reliably, improve the stability of crudy greatly.
2, adopt this covering device can effectively eliminate artificial clamping hidden danger.
3, adopt this covering device clamping facility, increase work efficiency greatly.
4, this covering device scope of application is wider, and fricton-tight friction, and the life-span is longer.
5, this covering device is simple in structure, and manufacturing cost is lower.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
As shown in the figure, the quick external diameter positioning tool in this no gap, it comprises placenta 1 and retainer 2, in placenta 1, offer placenta endoporus 3 and placenta stepped hole 4, on the placenta 1 of placenta stepped hole 4 and placenta endoporus 3 junctions, form step in the placenta, described placenta endoporus 3 is coaxial setting with placenta stepped hole 4, and the diameter of placenta stepped hole 4 offers workpiece fastener hole 5 greater than the diameter of placenta endoporus 3 on the step in placenta; At least be provided with the identical ball of two-layer diameter 6 in the described retainer 2, on the step, described ball 6 is against on the inwall of placenta stepped hole 4 in the placenta in workpiece fastener hole 5 outsides for 2 of retainers.
The utility model mainly is to be macropore by placenta stepped hole 4() after the aperture deducted twice steel ball ball 6 diameters, the size that draws was smaller or equal to workpiece 7 endoporus.Just gapless cooperation.The minimum of a value of accomplishing allowable tolerance when the external diameter of workpiece 7, and the aperture of placenta stepped hole 4 guarantees that the magnitude of interference is 0 ~ 0.002 when being machined to the maximum of allowable tolerance; The maximum interference amount is generally 0.035 ~ 0.045 by the decision of workpiece external diameter tolerance.Because the rollability of steel ball ball 6 is so though the maximum interference amount is arranged, the operative employee can pack workpiece in the placenta stepped hole 4 very easily.
Using prerequisite of the present utility model is to want earlier beating of the footpath jumping of centering placenta stepped hole 4, plane of orientation.Then when changing the outfit workpiece 7, as long as keep the cleaning on each surface just passable at every turn.
Claims (1)
1. quick external diameter positioning tool in no gap, it is characterized in that: it comprises placenta (1) and retainer (2), in placenta (1), offer placenta endoporus (3) and placenta stepped hole (4), go up step in the formation placenta at the placenta stepped hole (4) and the placenta (1) of placenta endoporus (3) junction, described placenta endoporus (3) is coaxial setting with placenta stepped hole (4), and the diameter of placenta stepped hole (4) offers workpiece fastener hole (5) greater than the diameter of placenta endoporus (3) on the step in placenta; At least be provided with the identical ball of two-layer diameter (6) in the described retainer (2), on the step, described ball (6) is against on the inwall of placenta stepped hole (4) retainer (2) seat in the placenta in workpiece fastener hole (5) outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205903204U CN201833081U (en) | 2010-11-04 | 2010-11-04 | Gapless quick outside diameter positioning tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205903204U CN201833081U (en) | 2010-11-04 | 2010-11-04 | Gapless quick outside diameter positioning tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201833081U true CN201833081U (en) | 2011-05-18 |
Family
ID=44003176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205903204U Expired - Fee Related CN201833081U (en) | 2010-11-04 | 2010-11-04 | Gapless quick outside diameter positioning tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201833081U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922058A (en) * | 2012-11-20 | 2013-02-13 | 无锡市瑞尔精密机械股份有限公司 | Fixture base for gear slotting machine |
| CN104759707A (en) * | 2015-03-19 | 2015-07-08 | 镇江索达联轴器有限公司 | Inner teeth inserting tool |
-
2010
- 2010-11-04 CN CN2010205903204U patent/CN201833081U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922058A (en) * | 2012-11-20 | 2013-02-13 | 无锡市瑞尔精密机械股份有限公司 | Fixture base for gear slotting machine |
| CN104759707A (en) * | 2015-03-19 | 2015-07-08 | 镇江索达联轴器有限公司 | Inner teeth inserting tool |
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Legal Events
| 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 |
Granted publication date: 20110518 Termination date: 20151104 |
|
| EXPY | Termination of patent right or utility model |