CN202372109U - Arc radius measuring instrument - Google Patents
Arc radius measuring instrument Download PDFInfo
- Publication number
- CN202372109U CN202372109U CN2011204554836U CN201120455483U CN202372109U CN 202372109 U CN202372109 U CN 202372109U CN 2011204554836 U CN2011204554836 U CN 2011204554836U CN 201120455483 U CN201120455483 U CN 201120455483U CN 202372109 U CN202372109 U CN 202372109U
- Authority
- CN
- China
- Prior art keywords
- circular arc
- main body
- rule
- secondary pawl
- radius
- 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 provides an arc radius measuring instrument, which comprises a main body, a main claw, a graduated scale, two auxiliary claws, an angle regulating device and indicating devices, wherein a first end of the main claw is a free end used for being contacted with an arc to be measured; a second end of the main claw is arranged on the main body; the graduated scale is arranged on the main body and is positioned on an extension line of the main claw; the two auxiliary claws are symmetrically arranged on both sides of the main claw; a first end of each auxiliary claw is a free end used for being contacted with the arc to be measured; the angle regulating device is used for regulating an included angle between the two auxiliary claws; the angle regulating device is arranged onto the main body and is connected with each auxiliary claw respectively; each indicating device is arranged at a second end of the corresponding auxiliary claw and is positioned on the extension line of the corresponding auxiliary claw; and intersection points of the indicating devices correspond to scales of the graduated scale. The arc radius measuring instrument provided by the utility model has the advantages of simple structure, as well as convenience and rapidness for measuring the radius of the arc.
Description
Technical field
The utility model relates to a kind of apparatus for measuring radius of circular arc.
Background technology
In machine-building and check, the problems of measurement of running into the arc surface radius of the non-full circle of workpiece through regular meeting.The method of measuring arc radius at present mainly contains: radius gauge mensuration, slide calliper rule method and bowstring method; The measurement mechanism that designs based on these several kinds of measuring methods all exists certain deficiency and limitation, can not satisfy in the production scene requirement of measuring the arc radius of this type part accurately, quickly and easily.
The utility model content
The utility model is intended to propose a kind of simple in structure, and can measure the apparatus for measuring radius of circular arc of arc radius rapidly and accurately.
A kind of apparatus for measuring radius of circular arc that the utility model provides comprises: main body; Axial prong, its first end are to be used for the free end that contacts with circular arc to be measured, and second end is installed on the main body; Rule is mounted on the main body, and is positioned on the extension line of axial prong; Two secondary pawls are symmetricly set on the both sides of axial prong, and first end of each secondary pawl is to be used for the free end that contacts with circular arc to be measured; Be used to adjust the angular adjustment apparatus of angle between two secondary pawls, this angular adjustment apparatus is mounted on the main body and is connected with each secondary pawl respectively; Indicating device is arranged on second end of each secondary pawl and is positioned on the extended line of corresponding secondary pawl, and the joint of each indicating device is corresponding with the scale of rule.
Further, angular adjustment apparatus is a gear set, and gear set comprises even number meshed gears successively, and two secondary pawls are connected respectively with the central shaft of the two ends gear of gear set.
Further, angular adjustment apparatus comprises four gears, four curved arranging of gear.
Further, rule is the telescopic shrinkage-rule of length.
Further, indicating device is the pointolite emitter.
Further, the pointolite emitter is a generating laser.
Further, indicating device is the telescopic pointer of length.
Further, the free end of axial prong and each secondary pawl is circular arc.
Further, indicating device and corresponding secondary pawl are for removably connecting.
Further, axial prong and main body are for removably connecting, and secondary pawl and angular adjustment apparatus are for removably connecting.
Technical scheme according to the utility model; During measurement; The angle of two secondary pawls of adjustment all fits the free end of axial prong and secondary pawl with circular arc to be measured, be symmetricly set on the both sides of axial prong because of two secondary pawls; So the joint of the indicating device of installing on each secondary pawl overlaps with rule; Scale by the pairing rule of joint promptly can be easy to draw the radius of measured circular arc, thereby provides a kind of simple in structure, and can measure the apparatus for measuring radius of circular arc of arc radius rapidly and accurately.
Description of drawings
The accompanying drawing that constitutes the part of the utility model is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 has schematically shown the structure of the apparatus for measuring radius of circular arc of the utility model.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the utility model.
Referring to Fig. 1, show the structure of a kind of apparatus for measuring radius of circular arc that the utility model provides, as shown in the figure, this apparatus for measuring radius of circular arc comprises main body 1, axial prong 2, rule 3, secondary pawl 4, angular adjustment apparatus 5 and indicating device 6 at least.
The apparatus for measuring radius of circular arc that adopts the utility model is when measuring; At first the free end with axial prong 2 leans against on circular arc 9 inside surfaces; Work angle adjusting gear 5 is regulated opening of two secondary pawls 4 or shrinkage amplitude then; Make the free end of each secondary pawl 4 also be close to circular arc 9 inside surfaces, indicating device and rule 3 on each secondary pawl accumulate in a bit, promptly can draw the radius of circular arc 9 at an easy rate through the reading of rule 3.Therefore, the utility model provides a kind of easy apparatus for measuring radius of circular arc, and that this measuring instrument has is simple in structure, easy to operate, measurement range big, direct advantage such as reading.
Need to prove that when rule 3 was zero graduation with second end of axial prong 2, the radius of circular arc 9 was the scale sum of joint on length and the rule 3 of axial prong 2.Measurement demand for the circular arc that adapts to different radii; Axial prong 2 and secondary pawl 4 are all made the series of products with different length specification; Axial prong 2 removably connects with main body 1; Secondary pawl 4 removably connects with angular adjustment apparatus 5, according to the size of measured circular arc, can change the axial prong 2 and secondary pawl 4 of different size during measurement.
The preferred implementation of angular adjustment apparatus 5 has been shown among Fig. 1, and angular adjustment apparatus 5 is a gear set, and gear set comprises even number meshed gears successively, and two secondary pawls 4 are connected respectively with the central shaft of the two ends gear of gear set.That is, among Fig. 1, the secondary pawl 4 in left side is connected with the central shaft of the gear of the gear set leftmost side among the figure, and with the gear moved in coaxial of the leftmost side; The secondary pawl 4 on right side is connected with the central shaft of the gear of the gear set rightmost side among the figure, and with the gear moved in coaxial of the rightmost side.Understand easily, remain the symmetry about axial prong 2 for making two secondary pawls 4, gear set also should be symmetrical set about axial prong 2.Through the even number gear is set, can guarantee that the synchronous backward of each secondary pawl 4 rotatablely moves, so that two secondary pawls 4 also keep in motion process about axial prong 2 symmetries, make axial prong 2, secondary pawl 4 extended lines meet on the rule 3 a bit all the time.Preferably, by finding out that angular adjustment apparatus 5 comprises four gears among the figure, four curved arranging of gear are rationally to utilize the space of main body 1.
Preferably, rule 3 is the telescopic shrinkage-rule of length.Like this, shrinkage-rule can be according to survey circular arc size, along freely stretching on self length direction, and the expansion measurement range, the operator can make things convenient for reading through the scale of shrinkage-rule; When not using, the shrinkage-rule of can withdrawing is so that carry.
Preferably, indicating device 6 is the pointolite emitter, during measurement, starts each point light emitted device, and light beam and rule 3 that each point light emitted device is sent intersect at a point, and can on shrinkage-rule, read the arc radius size.Preferably, this pointolite emitter is a generating laser.Perhaps, in a kind of unshowned mode, indicating device 6 is the telescopic pointer of length.Preferably, each indicating device 6 and corresponding secondary pawl 4 make indicating device 6 all can cooperate with the secondary pawl 4 of different size for removably connecting.Equally, axial prong 2 can be changed different specifications according to the needs of measurement range with secondary pawl 4.
Preferably, axial prong 2 is circular arc with the free end that each secondary pawl 4 is used for contacting with circular arc 9, makes each free-ended top more reliable with contacting of circular arc 9, and it is more accurate to measure.
In sum, the apparatus for measuring radius of circular arc of the utility model has following advantage: 1) measurement range is wide, can be through changing axial prong, secondary pawl expansion measurement range; 2) through laser beam, shrinkage-rule structure, guaranteed the measuring instrument advantages of small volume, compact conformation; 3) easily manufactured, with low cost; 4) do not need loaded down with trivial details conversion, can directly read arc radius.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (10)
1. an apparatus for measuring radius of circular arc is characterized in that, comprising:
Main body (1);
Axial prong (2), the free end of its first end for being used for contacting with circular arc to be measured (9), second end is installed on the said main body (1);
Rule (3) is mounted on the said main body (1), and is positioned on the extension line of said axial prong (2);
Two secondary pawls (4) are symmetricly set on the both sides of said axial prong (2), the free end of first end of each said secondary pawl (4) for being used for contacting with said circular arc to be measured (9);
Be used to adjust the angular adjustment apparatus (5) of angle between said two secondary pawls (4), this angular adjustment apparatus (5) is mounted on the said main body (1) and is connected with each said secondary pawl (4) respectively;
Indicating device (6) is arranged on second end of each said secondary pawl (4) and is positioned on the extended line of corresponding said secondary pawl (4), and the joint of each said indicating device (6) is corresponding with the scale of said rule (3).
2. apparatus for measuring radius of circular arc according to claim 1; It is characterized in that; Said angular adjustment apparatus (5) is a gear set, and said gear set comprises even number meshed gears successively, and said two secondary pawls (4) are connected respectively with the central shaft of the two ends gear of said gear set.
3. apparatus for measuring radius of circular arc according to claim 2 is characterized in that, said angular adjustment apparatus (5) comprises four gears, said four curved arranging of gear.
4. according to each described apparatus for measuring radius of circular arc in the claim 1 to 3, it is characterized in that said rule (3) is the telescopic shrinkage-rule of length.
5. apparatus for measuring radius of circular arc according to claim 4 is characterized in that, said indicating device (6) is the pointolite emitter.
6. apparatus for measuring radius of circular arc according to claim 5 is characterized in that, said pointolite emitter is a generating laser.
7. apparatus for measuring radius of circular arc according to claim 4 is characterized in that, said indicating device (6) is the telescopic pointer of length.
8. apparatus for measuring radius of circular arc according to claim 4 is characterized in that, the free end of said axial prong (2) and each said secondary pawl (4) is circular arc.
9. apparatus for measuring radius of circular arc according to claim 4 is characterized in that, said indicating device (6) and corresponding said secondary pawl (4) are for removably connecting.
10. apparatus for measuring radius of circular arc according to claim 4 is characterized in that, said axial prong (2) and said main body (1) are for removably connecting, and said secondary pawl (4) and said angular adjustment apparatus (5) are for removably connecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204554836U CN202372109U (en) | 2011-11-16 | 2011-11-16 | Arc radius measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204554836U CN202372109U (en) | 2011-11-16 | 2011-11-16 | Arc radius measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202372109U true CN202372109U (en) | 2012-08-08 |
Family
ID=46595806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204554836U Expired - Fee Related CN202372109U (en) | 2011-11-16 | 2011-11-16 | Arc radius measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202372109U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987277A (en) * | 2019-12-30 | 2020-04-10 | 三一重机有限公司 | Detection device |
-
2011
- 2011-11-16 CN CN2011204554836U patent/CN202372109U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987277A (en) * | 2019-12-30 | 2020-04-10 | 三一重机有限公司 | Detection device |
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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: 20120808 Termination date: 20141116 |
|
| EXPY | Termination of patent right or utility model |