CN203518906U - Measuring tool for outer circular arc radius - Google Patents
Measuring tool for outer circular arc radius Download PDFInfo
- Publication number
- CN203518906U CN203518906U CN201320531854.3U CN201320531854U CN203518906U CN 203518906 U CN203518906 U CN 203518906U CN 201320531854 U CN201320531854 U CN 201320531854U CN 203518906 U CN203518906 U CN 203518906U
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- contact
- main scale
- cavity
- slide block
- spring
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- A Measuring Device Byusing Mechanical Method (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model relates to a measuring tool for an outer circular arc radius, comprising a main scale. The main scale is provided with a left contact, a middle contact, and a right contact which are vertical to the main scale, wherein the left contact and the right contact slidably cooperate on the main scale, and the middle contact is fixed on the main scale. An end of the main scale is provided with a cavity, and the other end of the main scale is provided with a right cavity. The left cavity and the right cavity are arranged along a horizontal direction of the main scale. A first sliding block is slidably cooperated in the left cavity. Two ends of the first sliding block extend out of the left cavity and are connected with the left contact. A second sliding block is slidably cooperated in the right cavity. Two ends of the second sliding block extend out of the right cavity and are connected with the right contact. Two ends of the main scale are fixed with elastic devices. The elastic device is formed by an end cover and a spring. The end cover and the main scale are fixedly connected. An end of the spring is limited by the end cover, and the other end of the spring is limited by the first sliding block or the second sliding block. The measuring tool is simple in measuring process, and is high in measuring precision.
Description
Technical field
The utility model relates to a kind of measurer of outer arc radius.
Background technology
The non-whole round piece that is less than semicircle is present in manufacturing process with various forms, when manufacturing and using these workpiece, usually needs to measure its external diameter size.But up to the present, measure the radius of the non-whole round piece that is less than semicircle, be a very complicated loaded down with trivial details problem always, must ruler be measured indirectly with many.Measuring process is complicated, and precision is low.
Summary of the invention
For above-mentioned technical matters, fundamental purpose of the present utility model is for providing a kind of measurer of outer arc radius, and measuring process of the present utility model is simple, measuring accuracy is high.
The measurer of outer arc radius, comprise main scale, this main scale is provided with the left contact perpendicular to this main scale, middle contact and right contact, wherein left contact and right contact are slidably fitted on main scale, middle contact is fixed on main scale, one end of main scale is provided with left cavity, the other end of main scale is provided with right cavity, left cavity and right cavity are all along the lateral arrangement of this main scale, in left cavity, be sliding combined with the first slide block, the two ends of this first slide block reach outside left cavity and are connected with left contact, in right cavity, be sliding combined with the second slide block, the two ends of this second slide block reach outside right cavity and are connected with right contact, two ends at main scale are all fixed with elastic device, this elastic device is comprised of end cap and spring, end cap is fixedly connected with main scale, one end of spring is spacing by end cap, the other end of spring is spacing by the first slide block or the second slide block.
Described left contact is comprised of connecting link and wheel trolley, and wheel trolley is fixed on the end of connecting link by bearing pin.
Described right contact is comprised of connecting link and wheel trolley, and wheel trolley is fixed on the end of connecting link by bearing pin.
On left contact and right contact, be equipped with the pointer that points to main scale scale.
Adopted such scheme, during measurement, according to measured circular arc radius size, make left contact and right contact leave center suitable distance, make left contact, right contact, middle contact all contacts circular arc contact, left contact and right contact are when leaving the center of main scale, can impose on pressure to the spring of spring assembly, because left contact and right contact limit by elastic device, therefore, spring return action power at spring assembly, can make left contact or right contact keep closely with contacting of circular arc, read the distance L value that left contact or right contact leave main scale center, according to following formula, calculate the radius R of circular arc:
R=L
2/(2h)+h/2—r
In above formula, the radius that R is circular arc, L is the distance at left contact or right contact and main scale center, h is the distance of wheel trolley on wheel trolley and left contact or right contact on middle contact, the radius that r is wheel trolley.
The utlity model has the advantage that measuring process is simple, measuring accuracy is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
1 is main scale, and 2 is left contact, and 3 is middle contact, and 4 is right contact, and 5 is left cavity, and 6 is right cavity, and 7 is end cap, and 8 is spring, and 9 is pointer.
Embodiment
With reference to Fig. 1, the measurer of a kind of outer arc radius of the present utility model, comprise main scale 1, this main scale 1 is provided with left contact 2, middle contact 3 and the right contact 4 perpendicular to this main scale, wherein left contact 2 is slidably fitted on main scale with right contact 4, and described left contact is comprised of connecting link and wheel trolley, and wheel trolley is fixed on the end of connecting link by bearing pin, described right contact is comprised of connecting link and wheel trolley, and wheel trolley is fixed on the end of connecting link by bearing pin.On left contact and right contact, be equipped with the pointer 9 that points to main scale scale.Middle contact 3 is fixed on main scale, and middle contact is also comprised of connecting link and wheel trolley, and wheel trolley is fixed on the end of connecting link by bearing pin.One end of main scale 1 is provided with left cavity 5, and the other end of main scale is provided with right cavity 6, and left cavity 5 and right cavity 6 are all along the lateral arrangement of this main scale.In left cavity 2, be sliding combined with the first slide block, the two ends of this first slide block reach outside left cavity and are connected with left contact 2.In right cavity, be sliding combined with the second slide block, the two ends of this second slide block reach outside right cavity and are connected with right contact 4.Two ends at main scale are all fixed with elastic device, and this elastic device is comprised of end cap 7 and spring 8, and end cap 7 is fixedly connected with main scale, and one end of spring 8 is spacing by end cap, and the other end of spring 8 is spacing by the first slide block or the second slide block.
During measurement, according to measured circular arc radius size, make left contact and right contact leave center suitable distance, make left contact, right contact, middle contact all contacts circular arc contact, left contact and right contact are when leaving the center of main scale, can impose on pressure to the spring of spring assembly, because left contact and right contact limit by elastic device, therefore, spring return action power at spring assembly, can make left contact or right contact keep closely with contacting of circular arc, read the distance L value that left contact or right contact leave main scale center, according to following formula, calculate the radius R of circular arc:
R=L
2/(2h)+h/2—r
In above formula, the radius that R is circular arc, L is the distance at left contact or right contact and main scale center, h is the distance of wheel trolley on wheel trolley and left contact or right contact on middle contact, the radius that r is wheel trolley.
Claims (4)
1. the measurer of outer arc radius, it is characterized in that: comprise main scale, this main scale is provided with the left contact perpendicular to this main scale, middle contact and right contact, wherein left contact and right contact are slidably fitted on main scale, middle contact is fixed on main scale, one end of main scale is provided with left cavity, the other end of main scale is provided with right cavity, left cavity and right cavity are all along the lateral arrangement of this main scale, in left cavity, be sliding combined with the first slide block, the two ends of this first slide block reach outside left cavity and are connected with left contact, in right cavity, be sliding combined with the second slide block, the two ends of this second slide block reach outside right cavity and are connected with right contact, two ends at main scale are all fixed with elastic device, this elastic device is comprised of end cap and spring, end cap is fixedly connected with main scale, one end of spring is spacing by end cap, the other end of spring is spacing by the first slide block or the second slide block.
2. the measurer of outer arc radius according to claim 1, is characterized in that: described left contact is comprised of connecting link and wheel trolley, and wheel trolley is fixed on the end of connecting link by bearing pin.
3. the measurer of outer arc radius according to claim 1, is characterized in that: described right contact is comprised of connecting link and wheel trolley, and wheel trolley is fixed on the end of connecting link by bearing pin.
4. the measurer of outer arc radius according to claim 1, is characterized in that: on left contact and right contact, be equipped with the pointer that points to main scale scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320531854.3U CN203518906U (en) | 2013-08-28 | 2013-08-28 | Measuring tool for outer circular arc radius |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320531854.3U CN203518906U (en) | 2013-08-28 | 2013-08-28 | Measuring tool for outer circular arc radius |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203518906U true CN203518906U (en) | 2014-04-02 |
Family
ID=50377826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320531854.3U Expired - Fee Related CN203518906U (en) | 2013-08-28 | 2013-08-28 | Measuring tool for outer circular arc radius |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203518906U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651236A (en) * | 2016-04-01 | 2016-06-08 | 江苏华管机械制造科技有限公司 | Pipe bending radius measuring mechanism |
| CN108225155A (en) * | 2018-02-01 | 2018-06-29 | 中车株洲电机有限公司 | Suitable for the measurement tooling and method of large scale radius |
-
2013
- 2013-08-28 CN CN201320531854.3U patent/CN203518906U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651236A (en) * | 2016-04-01 | 2016-06-08 | 江苏华管机械制造科技有限公司 | Pipe bending radius measuring mechanism |
| CN108225155A (en) * | 2018-02-01 | 2018-06-29 | 中车株洲电机有限公司 | Suitable for the measurement tooling and method of large scale radius |
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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: 20140402 Termination date: 20150828 |
|
| EXPY | Termination of patent right or utility model |