CN203518906U - Measuring tool for outer circular arc radius - Google Patents

Measuring tool for outer circular arc radius Download PDF

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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
Authority
CN
China
Prior art keywords
contact
main scale
cavity
slide block
spring
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
Application number
CN201320531854.3U
Other languages
Chinese (zh)
Inventor
霍理
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHANGZHOU XILI ALLOY TOOLS CO LTD
Original Assignee
CHANGZHOU XILI ALLOY TOOLS CO LTD
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CHANGZHOU XILI ALLOY TOOLS CO LTD filed Critical CHANGZHOU XILI ALLOY TOOLS CO LTD
Priority to CN201320531854.3U priority Critical patent/CN203518906U/en
Application granted granted Critical
Publication of CN203518906U publication Critical patent/CN203518906U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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

The measurer of outer arc radius
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.
CN201320531854.3U 2013-08-28 2013-08-28 Measuring tool for outer circular arc radius Expired - Fee Related CN203518906U (en)

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 (1)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

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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