CN104422370A - Measuring tool for outer circular arc radius - Google Patents
Measuring tool for outer circular arc radius Download PDFInfo
- Publication number
- CN104422370A CN104422370A CN201310383505.6A CN201310383505A CN104422370A CN 104422370 A CN104422370 A CN 104422370A CN 201310383505 A CN201310383505 A CN 201310383505A CN 104422370 A CN104422370 A CN 104422370A
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- China
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- contact
- main scale
- cavity
- slide block
- spring
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Abstract
The invention relates to a measuring tool for outer circular arc radius. The measuring tool comprises a main scale. The main scale is provided with a left contact, a middle contact, and a right contact vertical to the main scale. The left contact and the right contact are slidably cooperated on the main scale. The middle contact is fixed on the main scale. One end of the main scale is provided with a left 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 the 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 provided with elastic devices. The elastic device is formed by an end cover and a spring. The end cover is fixedly connected with the main scale. One end of the spring is limited through the end cover. The other end of the spring is limited through the first sliding block and the second sliding block. The measuring process of the tool is simple and high in precision.
Description
Technical field
The present invention relates to a kind of measurer of outer arc radius.
Background technology
The non-whole round piece being less than semicircle is present in manufacturing process in a variety of forms, when manufacturing and using these workpiece, usually needs to measure its external diameter size.But up to the present, measure the radius being less than the non-whole round piece of semicircle, be a very complicated loaded down with trivial details problem always, must with many ruler indirect inspection.Measuring process is complicated, and precision is low.
Summary of the invention
For above-mentioned technical matters, fundamental purpose of the present invention is for providing a kind of measurer of outer arc radius, and measuring process of the present invention 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, the first slide block is sliding combined with in left cavity, the two ends of this first slide block reach outside left cavity and are connected with left contact, the second slide block is sliding combined with in right cavity, the two ends of this second slide block reach outside right cavity and are connected with right contact, all elastic device is fixed with in two ends of main scale, this elastic device is made up 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 by the first slide block or the second slide block spacing.
Described left contact is made up of connecting link and wheel trolley, and wheel trolley is fixed on the end of connecting link by bearing pin.
Described right contact is made up of connecting link and wheel trolley, and wheel trolley is fixed on the end of connecting link by bearing pin.
Left contact and right contact are equipped with the pointer pointing to main scale scale.
Have employed such scheme, during measurement, according to measured circular arc radius size, left contact and right contact is made to leave center suitable distance, make left contact, right contact, middle contact all contacts arc contact, left contact and right contact are when leaving the center of main scale, pressure can be imposed on to the spring of spring assembly, because left contact and right contact are limited by elastic device, therefore, at the spring-return acting force of spring assembly, the contact of left contact or right contact and circular arc can be made to keep tight, read the distance L value that left contact or right contact leave main scale center, the radius R of circular arc is gone out according to following formulae discovery:
R=L
2/(2h)+h/2—r
In above formula, R is the radius of circular arc, and L is the distance at left contact or right contact and main scale center, and h is the distance of wheel trolley on wheel trolley and left contact or right contact on middle contact, and r is the radius of wheel trolley.
The present invention has the advantage that measuring process is simple, measuring accuracy is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
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 invention, comprise main scale 1, this main scale 1 is provided with perpendicular to the left contact 2 of this main scale, middle contact 3 and right contact 4, wherein left contact 2 is slidably fitted on main scale with right contact 4, and described left contact is made up of connecting link and wheel trolley, and wheel trolley is fixed on the end of connecting link by bearing pin, described right contact is made up of connecting link and wheel trolley, and wheel trolley is fixed on the end of connecting link by bearing pin.Left contact and right contact are equipped with the pointer 9 pointing to main scale scale.Middle contact 3 is fixed on main scale, and middle contact is also made up 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.All be fixed with elastic device in two ends of main scale, this elastic device is made up 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, the other end of spring 8 by the first slide block or the second slide block spacing.
During measurement, according to measured circular arc radius size, left contact and right contact is made to leave center suitable distance, make left contact, right contact, middle contact all contacts arc contact, left contact and right contact are when leaving the center of main scale, pressure can be imposed on to the spring of spring assembly, because left contact and right contact are limited by elastic device, therefore, at the spring-return acting force of spring assembly, the contact of left contact or right contact and circular arc can be made to keep tight, read the distance L value that left contact or right contact leave main scale center, the radius R of circular arc is gone out according to following formulae discovery:
R=L
2/(2h)+h/2—r
In above formula, R is the radius of circular arc, and L is the distance at left contact or right contact and main scale center, and h is the distance of wheel trolley on wheel trolley and left contact or right contact on middle contact, and r is the radius of 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, the first slide block is sliding combined with in left cavity, the two ends of this first slide block reach outside left cavity and are connected with left contact, the second slide block is sliding combined with in right cavity, the two ends of this second slide block reach outside right cavity and are connected with right contact, all elastic device is fixed with in two ends of main scale, this elastic device is made up 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 by the first slide block or the second slide block spacing.
2. the measurer of outer arc radius according to claim 1, is characterized in that: described left contact is made up 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 made up 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: left contact and right contact are equipped with the pointer pointing to main scale scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310383505.6A CN104422370A (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 |
|---|---|---|---|
| CN201310383505.6A CN104422370A (en) | 2013-08-28 | 2013-08-28 | Measuring tool for outer circular arc radius |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104422370A true CN104422370A (en) | 2015-03-18 |
Family
ID=52972051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310383505.6A Pending CN104422370A (en) | 2013-08-28 | 2013-08-28 | Measuring tool for outer circular arc radius |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104422370A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107421424A (en) * | 2017-09-29 | 2017-12-01 | 中铁隆昌铁路器材有限公司 | ω type spring symmetry slide block type Quick detection tools and the method for inspection |
| CN111397483A (en) * | 2020-04-20 | 2020-07-10 | 江西鑫尔利电力科技有限公司 | Special tool for measuring diameter of iron core column |
| CN113607034A (en) * | 2021-06-30 | 2021-11-05 | 中建七局建筑装饰工程有限公司 | Arc-shaped curtain wall measuring tool and measuring method |
-
2013
- 2013-08-28 CN CN201310383505.6A patent/CN104422370A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107421424A (en) * | 2017-09-29 | 2017-12-01 | 中铁隆昌铁路器材有限公司 | ω type spring symmetry slide block type Quick detection tools and the method for inspection |
| CN107421424B (en) * | 2017-09-29 | 2023-03-10 | 中铁隆昌铁路器材有限公司 | Omega-shaped elastic strip symmetry sliding block type rapid checking fixture and checking method |
| CN111397483A (en) * | 2020-04-20 | 2020-07-10 | 江西鑫尔利电力科技有限公司 | Special tool for measuring diameter of iron core column |
| CN113607034A (en) * | 2021-06-30 | 2021-11-05 | 中建七局建筑装饰工程有限公司 | Arc-shaped curtain wall measuring tool and measuring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150318 |