CN201368715Y - Benchmark positioning structure of check tool - Google Patents
Benchmark positioning structure of check tool Download PDFInfo
- Publication number
- CN201368715Y CN201368715Y CNU2009201125757U CN200920112575U CN201368715Y CN 201368715 Y CN201368715 Y CN 201368715Y CN U2009201125757 U CNU2009201125757 U CN U2009201125757U CN 200920112575 U CN200920112575 U CN 200920112575U CN 201368715 Y CN201368715 Y CN 201368715Y
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- China
- Prior art keywords
- inserts
- product
- benchmark
- mounting bracket
- assembled shaft
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- Expired - Lifetime
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a benchmark positioning structure of a check tool, which comprises a mounting bracket; an upper assembling shaft and a lower assembling shaft are arranged on the mounting bracket. The longitudinal section of the lower assembling shaft is in an oval shape or in a similar oval shape, a long axis of the oval is parallel with horizontal plane, and the length thereof is theoretical minimum of inner hole size of inserts to be measured; and a short axis is perpendicular to the horizontal plane, the length thereof is the value that the theoretical minimum of the inner hole size of the inserts to be measured subtracts maximum value of the position degree deviation of the inserts, the products to be measured is very convenient to be installed on the utility model. The utility model not only can judge the inner hole size of the inserts, but also can judge other geometric tolerance of the products which consider the position degree of the inserts as benchmark.
Description
Technical field
The utility model relates to a kind of cubing, relates in particular to a kind of cubing benchmark location structure.
Background technology
Some products have the requirement of form and position tolerance, and these form and position tolerances generally all are based upon on some benchmark, concerned process steps then needs to verify with cubing whether product is qualified, current, when cubing is used to have two or more inserts, when form and position tolerance is based upon again and is the plastic cement products of benchmark with inserts position degree, because must there be inserts position degree deviation (having a process of shrinking naturally after the product depanning) in plastic cement products, can install cubing benchmark location structure smoothly for product (is installed to product on this cubing benchmark location assembled shaft, because needing very high repeated repeatability to measure, cubing accurately waits requirement, the assembled shaft of product benchmark location structure must be fixed on the cubing), must avoid the position degree deviation of product inserts, but cubing benchmark location structure must embody the detection of hole dimension in the product inserts again.Selection is embodied in the position degree deviation of inserts respectively on the assembled shaft of cubing benchmark location structure, in the product inserts hole dimension whether qualified be to have differentiated, but be the differentiation of other form and position tolerances of product of benchmark this moment with inserts position degree will cause the cubing operating personnel to misjudge because of the benchmark fit-up gap is excessive, can't judge correctly whether product is qualified.
The utility model content
The utility model is at deficiency of the prior art, a kind of cubing benchmark location structure is provided, when this cubing benchmark location structure is installed on cubing, it is very convenient that product is installed on this detent mechanism, and both can judge hole dimension in the inserts, can judge with inserts position degree to be other form and position tolerances of the product of benchmark again.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
A kind of cubing benchmark location structure, comprise mounting bracket, described mounting bracket is provided with upper and lower assembled shaft, the described longitudinal section of assembled shaft down is ellipse or class ellipse, described long axis of ellipse is parallel to surface level, its length is hole dimension theoretical minimum value in the inserts to be measured, and minor axis is perpendicular to surface level, and its length is the maximal value that the hole dimension theoretical minimum value deducts inserts position degree deviation in the inserts to be measured.
In the technique scheme, described mounting bracket comprises base, and the support that is arranged on the base top, and the side arm of support is provided with fixed block, and a sidewall of fixed block is provided with upper and lower assembled shaft, and this preferred mounting bracket is convenient to install workpiece, is convenient for measuring.
Beneficial effect: the utility model compared with prior art has following beneficial effect:
It is very convenient that product to be measured is installed on the utility model, and both can judge hole dimension in the inserts, can judge with inserts position degree to be other form and position tolerances of the product of benchmark again.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Fig. 2 is installed on the structural representation of assembled shaft for workpiece
Wherein descending assembled shaft 5 longitudinal sections is an ellipse, and major axis, minor axis dimension differ less, have made deformation process during drawing
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
See Fig. 1～Fig. 2, described cubing benchmark location structure is mainly by base 1, and the support 2 that is arranged at base 1 top, formations such as assembled shaft.
Described base 1 is a square plate, the top of base 1 is provided with support 2, the side arm of support 2 is provided with fixed block 3, one sidewall of fixed block 3 is provided with, following assembled shaft 4,5, workpiece 6 is installed on, following assembled shaft 4,5, wherein descend the longitudinal section of assembled shaft 5 (to see Fig. 2 for oval, and because this oval-shaped major axis and minor axis dimension differ less, not obvious among Fig. 1, Fig. 2 amplifies, deformation process), ellipse short shaft B length is the maximal value that the hole dimension theoretical minimum value deducts inserts position degree deviation in the drawing requirement product inserts, and perpendicular to surface level, transverse A length is hole dimension theoretical minimum value in the product inserts, and be parallel to surface level, and last assembled shaft 4 diameters can be by hole dimension theoretical minimum value processing in the inserts, and can product to be measured install cubing, can judge inserts position degree on the product, whether hole dimension is qualified in the inserts.After qualified, carrying out with inserts position degree is the differentiation of other form and position tolerances of product of benchmark again, thereby realizes the differentiation of product integrality.
Now illustrate with data:
In the prior art: drawing requires the position degree of two inserts on the product to be
The inserts endoporus is
So upper and lower assembled shaft 4,5 shaft diameters can be selected to make
(not considering manufacturing tolerance), computing formula is as follows: (7-0.05)-and 0.15=6.8, if the assembled shaft shaft diameter is not made
Can cause product on cubing, to be difficult to assembling, if but the assembled shaft shaft diameter made
Can cause later stage cubing operating personnel misjudgement because the fit-up gap is excessive between inserts endoporus and the assembled shaft equally, can't judge correctly whether product is qualified.The utility model: go up assembled shaft 4 shaft diameters and press hole dimension theoretical minimum value processing in the inserts on the product, make
Require the maximal value of inserts position degree deviation on the product all to embody on the ellipse short shaft B of following assembled shaft 5 in drawing.Following assembled shaft 5 ellipse short shaft B length make 6.65, computing formula:
(two inserts position degree deviation stacks on the product)=6.65, transverse A length is 6.95, computing formula:
Both considered the deviation that inserts position degree exists on the product, reduced the fit-up gap between inserts endoporus and the assembled shaft again, product benchmark location back cubing adds the measurement of general measurer by simulated block, just can correctly judge with inserts position degree to be whether the product of benchmark is qualified.
Claims (2)
1, a kind of cubing benchmark location structure, comprise mounting bracket, described mounting bracket is provided with upper and lower assembled shaft (4), (5), it is characterized in that, the described longitudinal section of assembled shaft (5) down is ellipse or class ellipse, and described long axis of ellipse (A) is parallel to surface level, and its length is hole dimension theoretical minimum value in the inserts to be measured, minor axis (B) is perpendicular to surface level, and its length is the maximal value that the hole dimension theoretical minimum value deducts inserts position degree deviation in the inserts to be measured.
2, cubing benchmark location structure as claimed in claim 1, it is characterized in that, described mounting bracket comprises base (1), and the support (2) that is arranged on base (1) top, the side arm of support (2) is provided with fixed block (3), and a sidewall of fixed block (3) is provided with upper and lower assembled shaft (4), (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201125757U CN201368715Y (en) | 2009-01-13 | 2009-01-13 | Benchmark positioning structure of check tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201125757U CN201368715Y (en) | 2009-01-13 | 2009-01-13 | Benchmark positioning structure of check tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201368715Y true CN201368715Y (en) | 2009-12-23 |
Family
ID=41487606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201125757U Expired - Lifetime CN201368715Y (en) | 2009-01-13 | 2009-01-13 | Benchmark positioning structure of check tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201368715Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102975146A (en) * | 2012-11-12 | 2013-03-20 | 中航沈飞民用飞机有限责任公司 | Tilting vertical tail band plate span locating and detecting device |
-
2009
- 2009-01-13 CN CNU2009201125757U patent/CN201368715Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102975146A (en) * | 2012-11-12 | 2013-03-20 | 中航沈飞民用飞机有限责任公司 | Tilting vertical tail band plate span locating and detecting device |
| CN102975146B (en) * | 2012-11-12 | 2014-10-22 | 中航沈飞民用飞机有限责任公司 | Tilting vertical tail band plate span locating and detecting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091223 |
|
| CX01 | Expiry of patent term |