CN106323185A - Digital display laser inner diameter measuring instrument - Google Patents

Digital display laser inner diameter measuring instrument Download PDF

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Publication number
CN106323185A
CN106323185A CN201610843252.XA CN201610843252A CN106323185A CN 106323185 A CN106323185 A CN 106323185A CN 201610843252 A CN201610843252 A CN 201610843252A CN 106323185 A CN106323185 A CN 106323185A
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CN
China
Prior art keywords
laser
measuring instrument
digital display
gauge head
spherical
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.)
Pending
Application number
CN201610843252.XA
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Chinese (zh)
Inventor
张川
孙生强
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.)
Suzhou Lanwang Machine Tools Technology Co Ltd
Original Assignee
Suzhou Lanwang Machine Tools Technology 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 Suzhou Lanwang Machine Tools Technology Co Ltd filed Critical Suzhou Lanwang Machine Tools Technology Co Ltd
Priority to CN201610843252.XA priority Critical patent/CN106323185A/en
Publication of CN106323185A publication Critical patent/CN106323185A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/08Measuring arrangements characterised by the use of optical means for measuring diameters
    • G01B11/12Measuring arrangements characterised by the use of optical means for measuring diameters internal diameters

Abstract

The invention provides a digital display laser inner diameter measuring instrument. The digital display laser inner diameter measuring instrument comprises a handle, a main control box, a connecting rod, a rotating rod and a spherical measuring head. According to the laser inner diameter measuring instrument, non-contact laser measurement is adopted; the spherical measuring head is rotated so as to carry out continuous measurement; three laser distance measuring instruments measure the inner wall of a workpiece, so that three-point distance groups can be obtained; and measured sectional plane inner diameter values corresponding to the three-point distance groups are calculated, a minimum value in the inner diameter values is obtained through comparison, the minimum value is the radial plane inner diameter value of the workpiece. The digital display laser inner diameter measuring instrument has the advantages of high accuracy and easy operation process, and can assist in effectively eliminating human-made errors brought by traditional contact type measurement. A fast and accurate measurement tool and method can be provided for the deep hole measurement of the workpiece.

Description

Digital display laser internal diameter measuring instrument
Technical field
The present invention relates to inner diameter measurement field, be specifically related to digital display laser internal diameter measuring instrument.
Background technology
Traditional inner diameter measurement uses drift no-go gage, it is impossible to quantify to measure numerical value;Inner diameter measurement use slide gauge or Inside micrometer is also only limitted to aperture inner diameter measurement;For dial bore gage or the contact type measurement of amesdial, need the most axially Rocking measurement and find axial minima, then circumferencial direction rocks and finds radially maximum, measures process loaded down with trivial details, measured value is because of individual Experience and measured value is the most unique;On the other hand, these are all contact type measurement, easily add high accuracy during contact type measurement Work surface of the work causes cut, thus disfiguring workpiece.
For a long time, internal diameter is the important measurement parameter of in hole measurement, and inner diameter measurement is carried out by Chinese scholars Substantial amounts of research.At present, centering undersized inner diameter measurement technology is gradually improved, but large-sized inner diameter measurement, particularly The measurement technology of large part inside and outside diameter develops but blank wall.The large-size inner diameter measurement of many large-scale processing sites works still Use the contact measurement methods such as large-scale inside micrometer.This method measurement efficiency is low, measurement parameter is few, measurement reproducibility Difference, stability are the highest, are easily affected by environment and operator.Doppler effect method, laser interferometer, laser lever method etc. are non- The precision of contact type measurement is the highest, but due to site environment reason, is not suitable for the in-site measurement of large-scale workpiece.And said method All it is not suitable for carrying out depth measurement.
Summary of the invention
It is an object of the invention to the problem above overcoming prior art to exist, it is provided that digital display laser internal diameter measuring instrument, this Invention uses high-precision laser to measure, and certainty of measurement is high, and is not directly contacted with, and process of measuring is to workpiece not damaged.
For realizing above-mentioned technical purpose, reaching above-mentioned technique effect, the present invention is achieved through the following technical solutions:
Digital display laser internal diameter measuring instrument, including handle, primary control box, connecting rod, swing arm, spherical gauge head, it is characterised in that: institute The primary control box one end stated is connected with handle, and the other end is connected with connecting rod;Described connecting rod is threaded connection with swing arm;Institute The spherical gauge head stated be upper bottom surface be plane, side is spherical;Described spherical gauge head upper bottom surface is provided with connecting hole;Described Connecting hole runs through spherical gauge head, and described spherical gauge head is fixed on swing arm top by screw through connecting hole;Described is spherical Laser range finder it is additionally provided with on gauge head;Described laser range finder is positioned on spherical gauge head side, described laser range finder number Amount is 3;Three laser range finder spherical gauge head biggest ball planes altogether;It is provided with power supply in described handle;Described primary control box Inside it is provided with control chip;Described control chip is connected with laser range finder;Described control chip controls laser range finder note Record measured value also calculates.
Further, described handle one side is provided with control key;Described control key is connected with control chip.
Further, three described laser range finders are isosceles right triangle distribution;Described spherical gauge head radius Value is r;In one-shot measurement, overturning spherical gauge head, three laser range finders are measured continuously and are obtained measured object n class value respectively {L1i、L2i、L3i}I=1,2 ... n.;It is provided with arithmetical unit in described control chip, draws measured object through described internalarithmetic Inner diameter values
Rotary ball gauge head angle repetitive measurement measured object obtains R ', (P=1,2 ... k), to R 'p(P=1,2 ... k) do geometric mean, obtain final measured object inner diameter values R.
Further, three described laser range finders are equilateral triangle distribution.
Further, described primary control box is provided with display screen;Described display screen is connected with control chip.
Further, memorizer, described inner diameter values R described in memorizer storage it are provided with in described control chip;Institute Inner diameter values R in the display screen display-memory stated.
Further, described laser range finder is divided into generating laser and laser pickoff.
Further, described digital display laser internal diameter measuring instrument also includes auxiliary support, described auxiliary support clamping hands Handle.
The invention has the beneficial effects as follows: the present invention provides digital display laser internal diameter measuring instrument, use non-contact laser to measure, Measuring continuously by overturning spherical gauge head, three laser feelers are measured workpiece inner wall and are obtained 3 distance groups, solve each 3 away from From the measurement cutting plane inner diameter values that group is corresponding, compare the minima solving in internal diameter, be workpiece sagittal plane inner diameter values;This survey Amount instrument certainty of measurement is high, and operating process is easy, effectively eliminates the personal error that conventional contact measurement brings, surveys for deep hole of workpiece Amount provides one quickly and accurately survey tool and method.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, And can be practiced according to the content of description, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after. The detailed description of the invention of the present invention is shown in detail in by following example and accompanying drawing thereof.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this Bright schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the digital display laser internal diameter measuring instrument assembling schematic perspective view of the present invention;
Fig. 2 is the digital display laser internal diameter measuring instrument side schematic view of the present invention;
Fig. 3 is that the digital display laser internal diameter measuring instrument of the present invention measures application partial schematic diagram;
Fig. 4 is that the digital display laser internal diameter measuring instrument of the present invention measures application front view;
Fig. 5 is the digital display laser internal diameter measuring instrument measuring principle schematic diagram 1 of the present invention;
Fig. 6 is the digital display laser internal diameter measuring instrument measuring principle schematic diagram 2 of the present invention;
Fig. 7 is the digital display laser internal diameter measuring instrument measuring principle schematic diagram 3 of the present invention;
Label declaration in figure: handle 1, primary control box 2, connecting rod 3, swing arm 4, spherical gauge head 5, laser range finder 6, measured object 8, control key 11, display screen 21, connecting hole 51, generating laser 61, laser pickoff 62.
Detailed description of the invention
Below with reference to the accompanying drawings and in conjunction with the embodiments, the present invention is described in detail.
With reference to shown in Fig. 1-7, digital display laser internal diameter measuring instrument, including handle 1, primary control box 2, connecting rod 3, swing arm 4, spherical Gauge head 5;Primary control box 2 one end is connected with handle 1, and the other end is connected with connecting rod 3;Connecting rod 3 is threaded connection with swing arm 4; Spherical gauge head 5 is plane for upper bottom surface, and side is spherical;Spherical gauge head 5 upper bottom surface is provided with connecting hole 51;Connecting hole 51 runs through Spherical gauge head 5, spherical gauge head 5 is fixed on swing arm 4 top by screw through connecting hole 51;It is additionally provided with laser on spherical gauge head 5 Diastimeter 6;Laser range finder 6 is positioned on spherical gauge head 5 side, and laser range finder 6 quantity is 3;Three laser range finders 6 are altogether Spherical gauge head 5 biggest ball plane;It is provided with power supply in handle 1;It is provided with control chip in primary control box 2;Control chip and laser ranging Instrument 6 connects;Control chip controls laser range finder 6 and records measured value and calculate.As in figure 2 it is shown, handle 1 end is provided with spiral cover 12, spiral cover 12 of outwarding winding changes power supply.
As shown in Figure 1 and Figure 2, handle 1 one side is provided with control key 11;Control key 11 is connected with control chip.Control key 11 wraps Include power key, aligning key, measurement key, calculation key, display key.Primary control box 2 is provided with display screen 21, and display screen 21 is with control chip even Connect.As in figure 2 it is shown, laser range finder 6 is divided into generating laser 61 and laser pickoff 62.
Further, memorizer, memorizer storage inner diameter values R it are provided with in control chip;In display screen 21 display-memory Inner diameter values R.
Further, digital display laser internal diameter measuring instrument also includes auxiliary support, and auxiliary support plays auxiliary supporting role, auxiliary Bearing holding handle 1, it is not necessary to the most hand-held.
Below in conjunction with Fig. 3-7, the situation that three laser range finders 6 are distributed in isosceles right triangle is discussed:
As it is shown in fig. 7, some A, B, C are respectively three laser range finders, i.e. △ ABC is isosceles right triangle, AB, AC is right-angle side, and D is midpoint, BC limit, then AD ⊥ BC, extends DA, DB, DC respectively and hands over circle O in some E, F, G;Outside known Ring 41 radius value is r, then release DA=DB=DC=r, and measured object 8 is measured measured value by three laser range finders 6 It is respectively L1, L2, L3, i.e. AE=L1, BF=L2, CG=L3, makes DE=a=L1+r, DF=b=L2+r, DG=c=L3+r; ThenFG=w=b+c;Known Δ EFG, then Δ EFG Circumscribed circle 0 is unique, and circumscribed circle 0 inner diameter values is that skill surveys thing 8 inner diameter values, utilizes Heron's formula, can obtain measured object 8 inner diameter valuesBring into
As Fig. 5, Fig. 6 understand, when three laser range finders 6 formation When measuring plane and measured object 8 θ in a certain angle, measured for minor axis be R, major diameter be the ellipse of R/cos θ, and if only if When measuring plane and being vertical with measured object 8 axis, measured figure is circle, and as shown in Figure 6, ellipse completely includes circle, i.e. surveys During amount planar inverted, the minima of R value is the inner diameter values of measured object 8.In single measurement, overturn spherical gauge head 5, measured object 8 Measured n measured n class value by three laser range finders and be respectively { L1i、L2i、L3i}I=1,2 ... n.;Then measured object inner diameter values
Rotary ball gauge head 5 angle repetitive measurement measured object 8 obtains R 'p(P=1,2 ...), to R 'p (P=1,2 ... k) do geometric mean, obtain final measured object 8 inner diameter values R.
First guarantee before using that this laser inside diameter measuring instrument power supply is sufficient;During use, power-on key, use standard component or school Quasi-instrument, presses aligning key and calibrates three laser range finders 6, after calibration.Hold handle 1 by laser inside diameter measuring instrument Spherical gauge head 5 stretches in measured object 8, and the measurement cutting plane of spherical gauge head 5 is difficult to excessive with measured object 8 radial section, pins survey Measuring key, laser launched by the generating laser 61 on spherical gauge head 5, and the distance value of 3 recorded by laser pickoff 62 simultaneously, with Time moving handle 1 make spherical gauge head 5 overturn, memorizer record distance values group, press calculation key, control chip calculates each distance The inner diameter values that numerical value group is corresponding, compares and show that minima is this inner diameter values R measured ', by mobile or rotary handle 1 more Change measurement position, as when inadequate, rotatable swing arm 4, measure after being allowed to elongation, obtain the inner diameter values R ' of repetitive measurementp (P=1,2 ... k), to R 'p(P=1,2 ... k) do geometric mean, obtain final measured object 8 inner diameter values R.Press display key, display screen 21 Show final R value.
Standard component to diameter 100mm does measurement checking test and obtains data below below:
Can be knowable to data above, θ value is the biggest, and R' is the biggest from R value difference, owing to after retaining arithmetic point when measuring, three have Effect numeral, therefore value of calculation R ' is 50.0001mm when 0 °.
Further, three laser range finders 6 are distributed solution and are also similar to isosceles right triangle solution in equilateral triangle, But according to practical situation, during in isosceles right triangle, computing is easier, therefore preferably three laser range finders 6 are in isosceles right angle Triangle-Profile.
The present invention provides digital display laser internal diameter measuring instrument, uses non-contact laser to measure, by overturning spherical gauge head even Continuous measurement, three laser feelers are measured workpiece inner wall and are obtained 3 distance groups, solve each 3 measurements apart from group correspondence truncated Face inner diameter values, compares the minima solving in internal diameter, is workpiece sagittal plane inner diameter values;This measuring instrument certainty of measurement is high, behaviour Making process easy, the personal error that effective elimination conventional contact measurement brings, for deep hole of workpiece measurement offer is a kind of quick Survey tool and method accurately.
The above, only presently preferred embodiments of the present invention, not the present invention is made any pro forma restriction;All The those of ordinary skill of the industry all can shown in by specification accompanying drawing and the above and implement the present invention swimmingly;But, all Those skilled in the art, in the range of without departing from technical solution of the present invention, utilize disclosed above technology contents to do The a little change gone out, the equivalent variations modified and develop, be the Equivalent embodiments of the present invention;Meanwhile, all according to the present invention's The change of any equivalent variations that above example is made by substantial technological, modify and differentiation etc., all still fall within the skill of the present invention Within the protection domain of art scheme.

Claims (9)

1. digital display laser internal diameter measuring instrument, including handle (1), primary control box (2), connecting rod (3), swing arm (4), spherical gauge head (5), It is characterized in that: described primary control box (2) one end is connected with handle (1), and the other end is connected with connecting rod (3);Described connection Bar (3) is threaded connection with swing arm (4);Described spherical gauge head (5) be upper bottom surface be plane, bottom is spherical;Described Spherical gauge head (5) upper bottom surface is provided with connecting hole (51);Described connecting hole (51) runs through spherical gauge head (5), described spherical survey Head (5) is fixed on swing arm (4) top by screw through connecting hole (51);It is additionally provided with Laser Measuring on described spherical gauge head (5) Distance meter (6);Described laser range finder (6) is positioned on spherical gauge head (5) side, and described laser range finder (6) quantity is 3 Individual;Three laser range finder (6) spherical gauge head (5) biggest ball planes altogether;It is provided with power supply in described handle (1);Described master It is provided with control chip in control box (2);Described control chip is connected with laser range finder (6);Described control chip controls to swash Optar (6) record measured value also calculates.
Digital display laser internal diameter measuring instrument the most according to claim 1, it is characterised in that: described handle (1) one side is provided with control Key processed (11);Described control key (11) is connected with control chip.
Digital display laser internal diameter measuring instrument the most according to claim 1, it is characterised in that: three described laser range finders (6) it is distributed in isosceles right triangle.
Digital display laser internal diameter measuring instrument the most according to claim 1, it is characterised in that: three described laser range finders (6) it is distributed in equilateral triangle.
Digital display laser internal diameter measuring instrument the most according to claim 3, it is characterised in that: described spherical gauge head (5) radius Value is r;In one-shot measurement, overturning spherical gauge head (5), three laser range finders (6) are measured continuously and are obtained measured object (8) nGroup Value is respectivelyFor { L1i、L2i、L3i}I=1,2 ... n.;It is provided with arithmetical unit in described control chip, obtains through described internalarithmetic Go out measured object (8) inner diameter values R '=min{ (√ ((L1i+r)^2+(L2i+r)^2)√((L1i+r)^2+(L3i+r)^2)((L2i+ r)+(L3i+r)))/√((√((L1i+r)^2+(L2i+r)^2)+√((L1i+r)^2+(L3i+r)^2)+(L2i+r)+(L3i+ r))(√((L1i+r)^2+(L2i+r)^2)+√((L1i+r)^2+(L3i+r)^2)-((L2i+r)+(L3i+r)))(√((L1i+ r)^2+(L2i+r)^2)+(L2i+r)+(L3i+r)-√((L1i+r)^2+(L3i+r)^2))(√((L1i+r)^2+(L3i+r)^ 2)+(L2i+r)+(L3i+r)-√((L1i+r)^2+(L2i+ r) ^2))), i=1,2 ... n;Rotary ball gauge head (5) angle Repetitive measurement measured object (8) obtains R 'p(P=1.2 ... k), to R 'p(P=12 ... k) do geometric mean, obtain in final measured object (8) Footpath value R.
Digital display laser internal diameter measuring instrument the most according to claim 5, it is characterised in that: described primary control box (2) is provided with aobvious Display screen (21);Described display screen (21) is connected with control chip.
Digital display laser internal diameter measuring instrument the most according to claim 6, it is characterised in that: it is provided with in described control chip and deposits Reservoir, described inner diameter values R described in memorizer storage;Described inner diameter values R in display screen (21) display-memory.
Digital display laser internal diameter measuring instrument the most according to claim 7, it is characterised in that: described laser range finder (6) point For generating laser (61) and laser pickoff (62).
Digital display laser internal diameter measuring instrument the most according to claim 8, it is characterised in that: described digital display laser inner diameter measurement Instrument also includes auxiliary support, described auxiliary support holding handle (1).
CN201610843252.XA 2016-09-23 2016-09-23 Digital display laser inner diameter measuring instrument Pending CN106323185A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107478166A (en) * 2017-07-17 2017-12-15 武汉理工大学 A kind of deformation monitoring hole effective aperture measurement apparatus and its operating method
CN108195295A (en) * 2018-01-31 2018-06-22 漳州职业技术学院 A kind of ball line slideway auxiliary raceway radius On-line Measuring Method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2304105Y (en) * 1997-06-13 1999-01-13 孙香庭 Calliper gauge digital-display measuring instrument
CN2763772Y (en) * 2004-11-12 2006-03-08 桂林广陆数字测控股份有限公司 Digital display measurer for deep bore diameter
CN1789907A (en) * 2005-12-27 2006-06-21 渤海船舶重工有限责任公司 Inside diameter measurement system for big-size shaft hole
CN103743355A (en) * 2014-01-13 2014-04-23 中国科学院武汉岩土力学研究所 Portable laser convergence gauge device
CN105043278A (en) * 2015-05-06 2015-11-11 天津大学 Non-contact and multi-point measurement method for measuring internal diameter of circular hole
CN206073927U (en) * 2016-09-23 2017-04-05 苏州蓝王机床工具科技有限公司 Digital display laser internal diameter measuring instrument

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2304105Y (en) * 1997-06-13 1999-01-13 孙香庭 Calliper gauge digital-display measuring instrument
CN2763772Y (en) * 2004-11-12 2006-03-08 桂林广陆数字测控股份有限公司 Digital display measurer for deep bore diameter
CN1789907A (en) * 2005-12-27 2006-06-21 渤海船舶重工有限责任公司 Inside diameter measurement system for big-size shaft hole
CN103743355A (en) * 2014-01-13 2014-04-23 中国科学院武汉岩土力学研究所 Portable laser convergence gauge device
CN105043278A (en) * 2015-05-06 2015-11-11 天津大学 Non-contact and multi-point measurement method for measuring internal diameter of circular hole
CN206073927U (en) * 2016-09-23 2017-04-05 苏州蓝王机床工具科技有限公司 Digital display laser internal diameter measuring instrument

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107478166A (en) * 2017-07-17 2017-12-15 武汉理工大学 A kind of deformation monitoring hole effective aperture measurement apparatus and its operating method
CN108195295A (en) * 2018-01-31 2018-06-22 漳州职业技术学院 A kind of ball line slideway auxiliary raceway radius On-line Measuring Method
CN108195295B (en) * 2018-01-31 2019-11-01 漳州职业技术学院 A kind of ball line slideway auxiliary raceway radius On-line Measuring Method

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Application publication date: 20170111