CN104121863B - Contactless aperture measurement device - Google Patents

Contactless aperture measurement device Download PDF

Info

Publication number
CN104121863B
CN104121863B CN201410360197.XA CN201410360197A CN104121863B CN 104121863 B CN104121863 B CN 104121863B CN 201410360197 A CN201410360197 A CN 201410360197A CN 104121863 B CN104121863 B CN 104121863B
Authority
CN
China
Prior art keywords
battery lead
lead plate
lining seat
fixed
feed screw
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.)
Active
Application number
CN201410360197.XA
Other languages
Chinese (zh)
Other versions
CN104121863A (en
Inventor
王文
王盛
张敏
诸丽燕
袁科杰
朱凌俊
任亚琳
许晓娇
叶佳翔
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.)
Hangzhou Dianzi University
Original Assignee
Hangzhou Dianzi 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 Hangzhou Dianzi University filed Critical Hangzhou Dianzi University
Priority to CN201410360197.XA priority Critical patent/CN104121863B/en
Publication of CN104121863A publication Critical patent/CN104121863A/en
Application granted granted Critical
Publication of CN104121863B publication Critical patent/CN104121863B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

The invention discloses a kind of contactless aperture measurement device.The capacitance type sensor gauge head being applied to micro hole inside diameter measurement at present is confined to measure a certain constant aperture, measures inefficient.In the present invention, ball screw is fixed with the output shaft of regulation motor, and scale grating is fixed on ball screw；Feed screw nut is connected with ball screw, and indication grating is fixed with feed screw nut；One end of four connecting rods is all hinged with the motor cabinet of regulation motor, and the other end is hinged with a push rod respectively；One end of four push rods is all hinged with feed screw nut, and the other end is fixed with a battery lead plate lining seat respectively；Same one end end face of four battery lead plate lining seats is respectively fixed with an electrode plate；Battery lead plate lining seat and battery lead plate are all the cylinder of fan ring in cross section；Four electrode plate are uniformly distributed along the circumference.The battery lead plate of the present invention is the most adjustable, it is achieved the accurate measurement in variable orifice footpath, including micropore, the measurement of shoulder hole of big L/D ratio.

Description

Contactless aperture measurement device
Technical field
The invention belongs to fine measuring instrument technical field, relate to aperture measurement device, be specifically related to a kind of contactless aperture measurement device.
Background technology
Along with modern science and technology developing rapidly at industrial circles such as Aero-Space, mould, automobiles, the processing of micro-aperture and measurement technology are one of important directions of Chinese scholars research.Non-cpntact measurement has the most tested impact measured one's own ability and certainty of measurement relatively advantages of higher, makes up the deficiency that contact type measurement exists, and is widely used in micro-aperture is measured.
The research launched around microsize high-acruracy survey, has very important significance.The method of non-contact measurement micro-aperture mainly has at present: optical measuring method, capacitance sensing measurement method, the Fraunhofer diffraction measurement method of aperture and pneumatic gauging method.Abroad, scholar is had to propose a kind of based on the measuring method aiming at trigger theory, it is achieved micro-pore diameter, circularity, the accurately measurement of area and calculating；Domestic, the long storehouse of University Of Tianjin grandson etc. based on capacitance sensor principle, the method and apparatus proposing micro measurement, its simple in construction, easy to operate, highly sensitive.Capacitance type sensor has the advantages such as precision is high, dynamic characteristic is good in micro hole inside diameter measurement, but its gauge head is confined to measure a certain constant aperture, i.e. measure different apertures and need the transducer probe assembly of different size, thus cause measuring efficiency and reduce, measure cost and raise.
Summary of the invention
The purpose of the present invention is for the deficiencies in the prior art, it is provided that a kind of contactless aperture measurement device, and this device can realize the accurate measurement in variable orifice footpath, is effectively improved measurement efficiency and certainty of measurement；Simple in construction, compact, and cost is relatively low.
The present invention includes regulating motor, connecting rod, scale grating, indication grating, feed screw nut, battery lead plate, push rod, ball screw and battery lead plate lining seat.Described ball screw and the output shaft regulating motor are fixed, and scale grating fixed cover is put on ball screw；Described feed screw nut is connected with ball screw, and described indication grating is fixed with feed screw nut, and is nested with outside scale grating；One end of four connecting rods is all hinged with the motor cabinet of regulation motor, and the other end is hinged with a push rod respectively；One end of four push rods is all hinged with feed screw nut, and the other end is fixed with a battery lead plate lining seat respectively；Described four battery lead plates lining seat is uniformly distributed along the circumference, and is respectively fixed with an electrode plate with one end end face；Described battery lead plate lining seat and battery lead plate are all the cylinder of fan ring in cross section；Place, the lateral wall circle diameter of described battery lead plate lining seat is more than place, the lateral wall circle diameter of battery lead plate；Described battery lead plate lining seat uses insulant；Four electrode plate are uniformly distributed along the circumference.
The central angle that described battery lead plate lining seat is corresponding with battery lead plate is equal.
Described battery lead plate lining seat aligns with the medial wall of battery lead plate setting.
The adjustable extent of place, the lateral wall circle diameter of described four electrode plate is 10～30mm.
Beneficial effects of the present invention:
1, the battery lead plate of the present invention is the most adjustable, thus realizes the accurate measurement in variable orifice footpath, including micropore, the measurement of shoulder hole of big L/D ratio；
2, the present invention uses capacitance sensor measuring principle, is effectively improved the efficiency of measurement, ensures the precision measured, simple in construction, measure low cost in relatively large journey.
Accompanying drawing explanation
Fig. 1 is the overall structure axonometric chart of the present invention；
Fig. 2 is the overall structure schematic diagram of the present invention.
Detailed description of the invention
As illustrated in fig. 1 and 2, contactless aperture measurement device, including regulation motor 1, connecting rod 2, scale grating 3, indication grating 4, feed screw nut 5, battery lead plate 6, push rod 7, ball screw 8 and battery lead plate lining seat 9.Ball screw 8 and the output shaft regulating motor 1 are fixed, and scale grating 3 is fixing to be nested with on ball screw 8；Feed screw nut 5 is connected with ball screw 8, and indication grating 4 is fixed with feed screw nut 5, and is nested with outside scale grating 3；One end of four connecting rods 2 is all hinged with the motor cabinet of regulation motor 1, and the other end is hinged with a push rod 7 respectively；One end of four push rods 7 is all hinged with feed screw nut 5, and the other end is fixed with a battery lead plate lining seat 9 respectively；Four battery lead plate lining seats 9 are uniformly distributed along the circumference, and are respectively fixed with an electrode plate 6 with one end end face；Battery lead plate lining seat 9 and battery lead plate 6 are all the cylinder of fan ring in cross section；Battery lead plate lining seat 9 and the central angle of battery lead plate 6 correspondence are equal, and battery lead plate lining seat 9 aligns with the medial wall of battery lead plate 6 setting, and battery lead plate serves as a contrast place, lateral wall circle diameter place, the lateral wall big 0.2mm of circle diameter than battery lead plate 6 of seat 9；Battery lead plate lining seat 9 uses insulant；Four electrode plate 6 are uniformly distributed along the circumference, and the adjustable extent of place, the lateral wall circle diameter of four electrode plate is 10～30mm.
The operation principle of this contactless aperture measurement device:
Battery lead plate 6 being stretched into measured hole measure, regulation motor 1 drives ball-screw 8 to rotate, thus drives feed screw nut 5 to slide (feed screw nut is passed to the active force of push rod 7, the limitation of movement of circumferencial direction by connecting rod 2) at axis direction；Push rod 7 moves the most therewith simultaneously, and drive link 2 swings；Four push rods launch simultaneously or shrink to drive four electrode plate 6 and four battery lead plates to serve as a contrast seat 9 and regulate the diameter of place circumference.When battery lead plate lining seat 9 contacts with the hole wall of measured hole, it is possible to the diameter of measured hole is measured.
Scale grating 3 and indication grating 4 form grating displacement sensor, in feed screw nut 5 moving process, drive indication grating 4 to move, and are realized the displacement measurement of feed screw nut 5 by the distance change of scale grating 3 with indication grating 4.
As in figure 2 it is shown, set the initial distance of the hinged center B of feed screw nut 5 to a hinged center A of regulation motor 1 correspondence as l0, the distance of the hinged center B that connecting rod 2 is corresponding with the hinged center D of push rod 7 to feed screw nut 5 is b, and it is Δ l that feed screw nut 5 is axially moveable displacement, a length of c of push rod 7, a length of a of connecting rod 2, then the radius of place, the lateral wall circumference of battery lead plate 6
R=csin θ+r0 (1)
In formula (1), r0Radius value for B place, the hinged center circumference of feed screw nut 5；θ is the angle between hinged center A, B line and hinged center B, D line, the cosine law obtain
θ = arccos b 2 + ( l 0 + Δl ) 2 - a 2 2 b ( l 0 + Δl ) .
Capacitance between battery lead plate 6 and measured hole is:
C = 2 πϵ L m ln ( R r ) ≈ 2 πϵ L m r Δr - - - ( 2 )
In formula (2), Taylor series expansion can obtainΔ r is the radial clearance of battery lead plate 6 and measured hole；ε is the dielectric constant of air, LmAxial length for battery lead plate 6；R is the radius of measured hole.
Detect the capacitance C between each battery lead plate 6 and measured holei(i=1,2,3,4), substitutes into formula (2) respectively and solves Δ ri(i=1,2,3,4).The aperture D of measured hole is represented by:
D = 2 ( r + 1 4 Σ i = 1 4 Δr i ) - - - ( 3 )
The battery lead plate of this contactless aperture measurement device is the most adjustable, thus realizes the accurate measurement in variable orifice footpath, including micropore, the measurement of shoulder hole of big L/D ratio；Use capacitance sensor measuring principle, the end surface shape impact on certainty of measurement in hole can be eliminated, be effectively improved the efficiency of measurement, in relatively large journey, ensure the precision measured.

Claims (4)

  1. The most contactless aperture measurement device, including regulation motor, connecting rod, scale grating, indication grating, Feed screw nut, battery lead plate, push rod, ball screw and battery lead plate lining seat, it is characterised in that:
    Described ball screw and the output shaft regulating motor are fixed, and scale grating fixed cover is put at ball wire On bar；Described feed screw nut is connected with ball screw, and described indication grating is fixed with feed screw nut, And be nested with outside scale grating；One end of four connecting rods is all hinged with the motor cabinet of regulation motor, the other end Hinged with a push rod respectively；One end of four push rods is all hinged with feed screw nut, and the other end is respectively with one Individual battery lead plate lining seat is fixed；Described four battery lead plates lining seat is uniformly distributed along the circumference, and solid respectively with one end end face Surely there is an electrode plate；Described battery lead plate lining seat and battery lead plate are all the cylinder of fan ring in cross section；Institute State place, lateral wall circle diameter place, the lateral wall circle diameter more than battery lead plate of battery lead plate lining seat；Institute The battery lead plate lining seat stated uses insulant；Four electrode plate are uniformly distributed along the circumference.
  2. Contactless aperture measurement device the most according to claim 1, it is characterised in that: described The central angle that battery lead plate lining seat is corresponding with battery lead plate is equal.
  3. Contactless aperture measurement device the most according to claim 1, it is characterised in that: described electricity Align with the medial wall of battery lead plate setting in the medial wall of pole plate lining seat.
  4. Contactless aperture measurement device the most according to claim 1, it is characterised in that: described four The adjustable extent of place, the lateral wall circle diameter of electrode plate is 10～30mm.
CN201410360197.XA 2014-07-25 2014-07-25 Contactless aperture measurement device Active CN104121863B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410360197.XA CN104121863B (en) 2014-07-25 2014-07-25 Contactless aperture measurement device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410360197.XA CN104121863B (en) 2014-07-25 2014-07-25 Contactless aperture measurement device

Publications (2)

Publication Number Publication Date
CN104121863A CN104121863A (en) 2014-10-29
CN104121863B true CN104121863B (en) 2016-09-14

Family

ID=51767378

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410360197.XA Active CN104121863B (en) 2014-07-25 2014-07-25 Contactless aperture measurement device

Country Status (1)

Country Link
CN (1) CN104121863B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106225661B (en) * 2016-07-10 2019-06-04 上海大学 Punching press bore dia device for fast detecting and its method on thin-wall part
CN107063091A (en) * 2017-04-11 2017-08-18 合肥工业大学 For big L/D ratio pipe fitting endoporus measuring multiple parameters device and method
CN109556552A (en) * 2018-11-19 2019-04-02 哈尔滨理工大学 A kind of hole diameter detection apparatus for eliminating hole true position error influence

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202171445U (en) * 2011-06-24 2012-03-21 中冶建筑研究总院有限公司 Pipeline effective internal diameter detection device
CN102927922A (en) * 2012-10-12 2013-02-13 中北大学 System for measuring inner diameter of tubular workpiece
CN103185562A (en) * 2011-12-31 2013-07-03 中航威海船厂有限公司 Round hole inner diameter measuring instrument
CN103206923A (en) * 2013-03-21 2013-07-17 丹东东方测控技术有限公司 Multi-arm underground caliper measurement probe and application method
CN204007527U (en) * 2014-07-25 2014-12-10 杭州电子科技大学 A kind of contactless aperture measurement device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101551228A (en) * 2008-04-03 2009-10-07 鸿富锦精密工业（深圳）有限公司 Inner diameter measuring device and measuring method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202171445U (en) * 2011-06-24 2012-03-21 中冶建筑研究总院有限公司 Pipeline effective internal diameter detection device
CN103185562A (en) * 2011-12-31 2013-07-03 中航威海船厂有限公司 Round hole inner diameter measuring instrument
CN102927922A (en) * 2012-10-12 2013-02-13 中北大学 System for measuring inner diameter of tubular workpiece
CN103206923A (en) * 2013-03-21 2013-07-17 丹东东方测控技术有限公司 Multi-arm underground caliper measurement probe and application method
CN204007527U (en) * 2014-07-25 2014-12-10 杭州电子科技大学 A kind of contactless aperture measurement device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
电容传感微小孔径的测量方法;孙长库等;《纳米技术与精密工程》;20060630;第4卷(第2期);第103-106页 *

Also Published As

Publication number Publication date
CN104121863A (en) 2014-10-29

Similar Documents

Publication Publication Date Title
CN202119378U (en) Steering gear nut internal thread raceway external circle coaxiality testing fixture
CN104121863B (en) Contactless aperture measurement device
CN201787928U (en) High-precision pneumatic gauge for measuring bore diameter
CN204007527U (en) A kind of contactless aperture measurement device
CN202133349U (en) Calibrating device for non-contact displacement sensor
CN106595468B (en) Built-in rock sample inner hole radial direction deformation test device
CN203177885U (en) Standard device used in three-dimensional non-contact measuring system calibration
CN106950137A (en) Tangential fretting abrasion test device and test method
CN201281582Y (en) Major diameter dynamic measurement instrument by roller method
CN208476151U (en) A kind of threaded hole detection gauge
CN202836419U (en) Device for measuring axial sizes of convex shoulders inside workpiece hole
CN203241381U (en) Scanning and detecting device of portable cylindrical ferromagnetic member
CN103196992B (en) The scanning detection apparatus of portable cylindrical ferromagnetic component
CN203744894U (en) Detector for measuring inner and outer diameters of large-diameter bearing
CN105091720A (en) Cone-surface measuring tool for rotor of large motor
CN206479128U (en) A kind of bearing inner race roundness measuring device
CN105509605B (en) Meter counter
CN109870100B (en) Device and method for measuring deformation of damping block in launching tube
CN102878886A (en) Device for measuring axial size of beading in workpiece hole
CN203672278U (en) Ball bowl interior diameter measuring apparatus
CN209116960U (en) A kind of detector for displacement measuring of non-contact type high-precision wide range
CN205718828U (en) A kind of Multi-dimensional high-precision aperture thermal deformation automatic measurement system
CN206891887U (en) Tangential fretting abrasion test device
CN108168487B (en) Dynamic radius measuring mechanism of arm type precision centrifuge
CN205785806U (en) A kind of ball screw assembly, Static stiffness measurement apparatus with rotation compensation function

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant