CN2879118Y - Measuring tool for outer arc radius - Google Patents

Measuring tool for outer arc radius Download PDF

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Publication number
CN2879118Y
CN2879118Y CNU2006200823067U CN200620082306U CN2879118Y CN 2879118 Y CN2879118 Y CN 2879118Y CN U2006200823067 U CNU2006200823067 U CN U2006200823067U CN 200620082306 U CN200620082306 U CN 200620082306U CN 2879118 Y CN2879118 Y CN 2879118Y
Authority
CN
China
Prior art keywords
measuring
displacement meter
circular arc
outer arc
arc 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
Application number
CNU2006200823067U
Other languages
Chinese (zh)
Inventor
程钢
王卫东
程强
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.)
Shandong Jianzhu University
Original Assignee
Shandong Jianzhu University
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 Shandong Jianzhu University filed Critical Shandong Jianzhu University
Priority to CNU2006200823067U priority Critical patent/CN2879118Y/en
Application granted granted Critical
Publication of CN2879118Y publication Critical patent/CN2879118Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a tool for measuring radius of outward circular arc on mold, comprising a lock seat. Three electronic displacement gauges are at leas arranged on the lock seat, which connected with the measuring contact heads, the centers of the measuring contact heads are located at the same plane. The assembled measuring tool is placed adjacent to the outward circular arc to be measured ensuring the measuring contact head contacts closely with the surface of the circular arc to be measured, the position of the measuring tool is adjusted to make the readings of the displacement gauges at two sides of the measuring tool be the same, after the readings of three displacement gauges are recorded, the radius of the outward circular arc to be measured is calculated. The utility model can be used for measurement on non-circular arc structure which is smaller than semicircle, and has high measurement precision, low cost and strong operability, and is convenient for popularization.

Description

The outer arc radius tools for measurement
Technical field
The utility model relates to a kind of survey instrument, relates in particular to a kind of outer arc radius tools for measurement.
Background technology
Along with social demand and development of science and technology, enterprise's development product is increasing, become increasingly complex, and the shape and structure of following mould also becomes increasingly complex, and the chance that contacts various orthodromes is more and more.The radius of orthodrome is generally gone up in " big worker shows " or " universal tool microscope " and is measured with " bowstring method ".When the profile of measured circular arc had shape error, the measuring accuracy of " bowstring method " was not high.Moreover arc radius is big more, chord length and bow Gao Yuexiao, and the radius measurement error is big more.In the manufacturing of mould, the processing and the check of workpiece orthodrome dimensional accuracy, often since workpiece abnormity or circular arc circumference can't directly measure less than semicircle (as fan-shaped), generally, the measurement of arc radius is to be finished by original processing model, owing to reasons such as the precision of model itself are lower, make the scale error of mould circular arc very big, can not satisfy the production needs when serious.For this reason, designed a kind of specific purpose tool, satisfied needs at in-process measurement and check outer arc radius.
Summary of the invention
The utility model is at the deficiencies in the prior art, and a kind of simple in structure, easy to operate, precision is high, cost is low outer arc radius survey instrument is provided.
The utility model is achieved by the following technical solution: it comprises at least three electron displacement meters is installed on deck, the deck, and the electron displacement meter is connected with measuring contacts, being centered close in the same plane of measuring contacts.
Above-mentioned electron displacement meter specifically comprises the sounding rod that is connected with measuring contacts, and sounding rod passes the dial plate of electron displacement meter, and can slide at dial plate endoporus cathetus.
The electron displacement meter specifically can be installed on the deck in the following way: have three projections on the deck, projection is provided with the mounting hole that the electron displacement meter is installed, projection is provided with binding groove, and binding groove is communicated with mounting hole, and projection is provided with the fastening screw keyhole that passes binding groove.Concrete operations are as follows: the electron displacement meter is installed in the electron displacement meter mounting hole on the deck, binding groove is arranged on the deck, trip bolt is installed in the trip bolt mounting hole, tightens fixedly electron displacement meter of trip bolt.This fixed form is simple and reliable.
In order to measure accurately, easy to operate, measuring contacts can be designed to sphere, the spherical centre of sphere is positioned at same plane.
The utlity model has simple and reasonablely, precision height, the advantage that cost is low, workable are convenient to promote the use of, and can provide measurement data accurately for the improvement of the structural design of mould external arc, dimensional parameters, precision parameter.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is a deck structural representation in the utility model embodiment.
Among the figure: 1, electron displacement meter, 2, deck, 3, trip bolt, 4, sounding rod, 5, measuring contacts, 6, electron displacement meter mounting hole, 7, the trip bolt mounting hole, 8, binding groove, 9, dial plate.
Specific implementation method
For clearly demonstrating the technical characterstic of this programme,, and, this programme is set forth in conjunction with its accompanying drawing below by an embodiment.
As shown in drawings, this mould outer arc radius survey instrument is made up of three electron displacement meters 1, deck 2, three measuring contacts 5, electron displacement meter 1 comprises the sounding rod 4 that is connected with measuring contacts 5, and sounding rod 4 passes the dial plate 9 of electron displacement meter 1, and can slide at dial plate 9 endoporus cathetuss.Electron displacement meter 1 is installed in the electron displacement meter mounting hole 6 on the deck 2, opens binding groove 8 on the deck 2, and trip bolt 3 is installed in the trip bolt mounting hole 7, tightens fixedly electron displacement meter 1 of trip bolt 3, and the measuring contacts 5 of electron displacement meter 1 is spherical.With the close tested external arc of mounted survey instrument, measuring contacts 5 is closely contacted with the measured circular arc surface, sounding rod 4 can freely stretch according to crown height, the position of adjusting survey instrument equates left and right sides displacement meter dial plate 9 readings, and the reading of three displacement meters 1 of record can be obtained the radius R of tested external arc.If the manual read gets the measurement data inconvenience of displacement meter in measuring process, also electron displacement meter 1 can be connected with dynamic strain indicator, displacement is converted into voltage signal output, measures this voltage by dynamic strain indicator, measurement result can be analyzed with data by computing machine and preserve.
The measuring principle of the utility model mould outer arc radius survey instrument: by geometrical principle as can be known, 3 determine a circle.In the accompanying drawings, the spherical measuring contacts 5 that three radiuses are r is that the external arc of R is tangent with radius respectively, and about two roundlets with respect to the middle roundlet center of circle and external arc circle center line connecting symmetry.According to Pythagorean theorem (R+r) 2-L 2=[(R+r)-H] 2, the arrangement following formula can get outer arc radius R = L 2 2 H + H 2 - r . By the structure of this survey instrument as can be known, the radius r of measuring contacts 5 and L are determined values, and H can be subtracted each other by the measured value of the measured value of left and right sides electron displacement meter and middle electron displacement meter and obtains.Like this, the radius R of external arc just can calculate according to above-mentioned formula.

Claims (4)

1. outer arc radius tools for measurement is characterized in that: it comprises at least three electron displacement meters is installed on deck, the deck, and the electron displacement meter is connected with measuring contacts, being centered close in the same plane of measuring contacts.
2. outer arc radius tools for measurement according to claim 1 is characterized in that: described electron displacement meter comprises the sounding rod that is connected with measuring contacts, and sounding rod passes the dial plate of electron displacement meter, and can slide at dial plate endoporus cathetus.
3. outer arc radius tools for measurement according to claim 1 and 2, it is characterized in that: have three projections on the described deck, projection is provided with the mounting hole that the electron displacement meter is installed, projection is provided with binding groove, binding groove is communicated with mounting hole, and projection is provided with the fastening screw keyhole that passes binding groove.
4. outer arc radius tools for measurement according to claim 1 and 2 is characterized in that: described measuring contacts is for spherical, and the spherical centre of sphere is positioned at same plane.
CNU2006200823067U 2006-03-28 2006-03-28 Measuring tool for outer arc radius Expired - Fee Related CN2879118Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2006200823067U CN2879118Y (en) 2006-03-28 2006-03-28 Measuring tool for outer arc radius

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2006200823067U CN2879118Y (en) 2006-03-28 2006-03-28 Measuring tool for outer arc radius

Publications (1)

Publication Number Publication Date
CN2879118Y true CN2879118Y (en) 2007-03-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2006200823067U Expired - Fee Related CN2879118Y (en) 2006-03-28 2006-03-28 Measuring tool for outer arc radius

Country Status (1)

Country Link
CN (1) CN2879118Y (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101750007B (en) * 2010-02-01 2012-03-14 洛阳轴研科技股份有限公司 Contact type measuring method for precisely measuring position of bearing ferrule trench
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
CN106441020A (en) * 2016-08-31 2017-02-22 珠海市华远自动化科技有限公司 Intelligent circular pipe outer diameter measurement analysis system
CN106767635A (en) * 2016-12-28 2017-05-31 广州聚旭机电技术研究院有限公司 A kind of method for calibrating spring chi and its measurement tree-walk

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101750007B (en) * 2010-02-01 2012-03-14 洛阳轴研科技股份有限公司 Contact type measuring method for precisely measuring position of bearing ferrule trench
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
CN106441020A (en) * 2016-08-31 2017-02-22 珠海市华远自动化科技有限公司 Intelligent circular pipe outer diameter measurement analysis system
CN106767635A (en) * 2016-12-28 2017-05-31 广州聚旭机电技术研究院有限公司 A kind of method for calibrating spring chi and its measurement tree-walk

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee