CN107238336A - Engine valve stem detection device - Google Patents

Engine valve stem detection device Download PDF

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Publication number
CN107238336A
CN107238336A CN201710576047.6A CN201710576047A CN107238336A CN 107238336 A CN107238336 A CN 107238336A CN 201710576047 A CN201710576047 A CN 201710576047A CN 107238336 A CN107238336 A CN 107238336A
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CN
China
Prior art keywords
valve stem
detection
engine valve
locating piece
positioning
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
CN201710576047.6A
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Chinese (zh)
Inventor
张军
彭程
李世春
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Yangtze Normal University
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Yangtze Normal University
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Publication date
Application filed by Yangtze Normal University filed Critical Yangtze Normal University
Priority to CN201710576047.6A priority Critical patent/CN107238336A/en
Publication of CN107238336A publication Critical patent/CN107238336A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/003Measuring of motor parts
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/24Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B5/25Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/28Measuring arrangements characterised by the use of mechanical techniques for measuring roughness or irregularity of surfaces

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

The invention discloses a kind of engine valve stem detection device, including engine valve stem linearity testing apparatus and valve stem end face run-out detection means, engine valve stem linearity testing apparatus, including bottom block, engine valve stem positioning fixture and engine valve stem straightness detection mechanism are provided with bottom block, the engine valve stem positioning fixture includes the location structure that two sections of length directions of following wind one are set, and every section of location structure includes two intersecting locating surfaces in angle and can be used in the linear contact lay that is formed with valve stem on same straight line;The engine valve stem straightness detection mechanism includes an engine valve stem Linearity surveying digital dial gauge, and digital dial gauge detection bar front end is formed with a test side, and detection is realized in the contact of valve stem peripheral surface after the test side is used for and positioned.The present invention have it is simple in construction, it is easy to operate, can realize the detection of engine valve stem linearity, and testing result accurately and reliably the characteristics of.

Description

Engine valve stem detection device
Technical field
Part of automobile engine of the present invention produces detection technique field, more particularly to a kind of engine valve stem detection device.
Background technology
Automobile engine can be converted into mechanical energy by the chemical energy of fuel or by other forms, provide dynamic for automobile Power, is the heart of automobile, belongs to a kind of technology-intensive product.With China's expanding economy, to automobile demand amount and day All auto industry is developed rapidly while increase, and people are to the performance requirement of automobile engine also more and more higher.
In automobile engine, inlet and exhaust valve is that the bar portion being integrated is coaxially disposed with round plate by a round plate and one The component of composition, belongs to one of automobile engine key components and parts, is the door of engine chamber, is engine working process The key foundation part of middle sealing porting, for blocking gas channel, controls the gas exchanges of engine.In engine In each course of work, inlet valve and exhaust valve are all respectively opened and closed once when valve is opened and closed, and valve is born The pressure of valve spring and pressure when taking a seat.Inlet valve and exhaust valve serve close particularly in compression and expansion stroke Seal the effect of combustion chamber.Therefore, the quality of valve quality has important influence to engine performance and life-span.
Motion of the machining accuracy and structure of valve to engine valve actuating mechanism play the role of it is very important, while wherein The bar portion of valve is the key position of valve, and it is both design basis and technique and detection benchmark, and it is almost all with valve There is a substantial connection at position, traditional engine valve stem detection mode need by it is substantial amounts of it is artificial complete, testing cost is efficient Rate is low, and carries out quality cubing related to accuracy detection and easily influenceed by the factor of operating personnel, easily due to human eye vision Fatigue easily causes the unstability of detection, increases the error rate of product.It is difficult to meet the product quality requirement improved constantly.
Engine valve stem refers to that part worked in valve guide bushing, and the quality of its bar portion linearity directly affects gas The normal work of door.In process of factory production, engine valve stem linearity has to carry out the technique of alignment to be ensured to it.And In existing valve manufacturing enterprise, some valve manufacturing enterprises are carried out mainly by universal tool-measuring microscope to engine valve stem linearity Detection.Because its inspection cost is high, required time is long, therefore examines engine valve stem linearity and number of times and batch very limited, directly Connect and think to have the technique of alignment to be ensured.Enterprise without universal tool-measuring microscope typically no examines to this project Survey.Whether valve stem end surface is smooth simultaneously, is also to influence one of key factor of valve assembly precision, existing manufacturing enterprise is to bar End face run-out mainly detected using end face run-out instrument, there is that equipment is larger, and cost is higher, and the shared big grade of spatial volume is scarce Fall into, seriously improve the production cost of enterprise.
Therefore how to design a kind of simple in construction, and it is easy to operate, reliable engine valve stem detection device is detected to realize Detection to engine valve stem data, the problem of as there is considered solution.
The content of the invention
The technical problem to be solved in the present invention is:How to provide a kind of simple in construction, it is easy to operate, it can realize The detection of engine valve stem linearity, can realize engine valve stem end face flatness detection, and testing result accurately and reliably valve Bar portion detection device.
In order to solve the above-mentioned technical problem, present invention employs following technical scheme.
A kind of engine valve stem detection device, including engine valve stem linearity testing apparatus, engine valve stem Linearity surveying dress Put including bottom block, it is characterised in that engine valve stem positioning fixture and engine valve stem straightness detection machine are provided with bottom block Structure, the engine valve stem positioning fixture includes the location structure that two sections of length directions of following wind one are set, and every section of location structure includes Two intersecting locating surfaces in angle, two locating surfaces of two location structures each can be used in being formed with always with valve stem Position between linear contact lay on line, two sections of location structures is formed with a detection breach;The engine valve stem Linearity surveying Mechanism includes an engine valve stem Linearity surveying digital dial gauge, and digital dial gauge has a horizontally disposed cooperation Section, coordinate section coordinate in the mating holes being arranged on an amesdial matching seat of bottom block, it is described be combined into can along number What word amesdial detection bar length direction was slided is slidably matched, and is additionally provided with amesdial matching seat and engine valve stem linearity is examined The amesdial fixed structure that survey is fixed with digital dial gauge, valve stem axle of the digital dial gauge detection bar after positioning Heart line direction and just detection gap position is being set, and digital dial gauge detection bar front end is formed with a test side, the detection Valve stem peripheral surface contact after being used for and positioning is held to realize detection.
So, during detection, engine valve stem to be detected can be positioned on two locating surfaces of two sections of location structures, so After push down engine valve stem make its respectively with two locating surfaces formation linear contact lays, then adjust digital dial gauge position, make its test side Contacted from detection gap position and engine valve stem peripheral surface and produce certain precompressed amount, then by amesdial fixed structure Fix digital dial gauge.While now keeping the linear contact lay of engine valve stem and two locating surfaces, along engine valve stem length side To engine valve stem is pulled, the variable quantity of digital dial gauge is then observed, you can detection obtains the straight line degrees of data of engine valve stem;This Sample, during detection, the left and right sides of engine valve stem test point position is the positioning that each two lines contact is formed with location structure, so The influence that surface of position out-of-flatness is caused to Linearity surveying at valve stem positioning is avoided, accuracy of detection is improved and reliable Property.Therefore with simple in construction, easy to operate, the characteristics of accuracy of detection is high.Wherein mating holes is horizontally disposed with, more to facilitate regulation Detection.
As optimization, engine valve stem positioning fixture includes the first locating piece and the second positioning of overall rectangular-blocklike structure Block, the first locating piece and the laminating of the second locating piece horizontal direction are set and fixed on bottom block so that the first locating piece upper surface Described two locating surfaces are formed with the laminating side side of the second locating piece, the detection breach is positioned by the first locating piece and second The groove of block upper surface is obtained.
So make its simple in construction, the processing and installation of conveniently positioning structure are formed, and cause a level side of formation To two locating surfaces of a vertical direction, two locating surfaces are mutually perpendicular to, and make its positioning reliably, mutual alignment relation precision can Lean on.
As optimization, engine valve stem positioning fixture also includes the 3rd locating piece, and the 3rd locating piece relies on screw It is fixed on bottom block, the 3rd locating piece upper surface is provided with the locating slot of the rectangular body structure of an entirety, locating slot ground For horizontally disposed locating piece reference plane, positioning well width and the first locating piece and the second locating piece are along perpendicular to its side side of fitting The width sum in face direction is consistent so that the first locating piece and the second locating piece are located in locating slot, the first locating piece and Two locating piece bottom surfaces and the laminating of locating piece reference plane, the overhead surface that locating slot is located at the side position of digital dial gauge one are less than first Locating piece upper surface location.
So, during assembling, the installation that only need to complete the 3rd locating piece by screw be fixed, then by the first locating piece and the Clamping loads locating slot after the laminating of two locating pieces, installs very convenient quick, and the first locating piece and the second locating piece Rigging error, can be determined by the cooperation between the 3rd locating piece, can more be facilitated reduction mismatch error, be greatly enhanced Accuracy of detection.
As optimization, in addition to engine valve stem pressing device, engine valve stem pressing device includes an elastic component and set Put an applicator member on elastic component, applicator member be located at two locating surface angles just to direction on and in elastic structure Engine valve stem peripheral surface contact under the effect of part elastic force and after positioning is compressed.
It is so convenient to replace human hand from one pressure pair of direction application just to two locating surface angles by pressing device Engine valve stem after positioning, which is realized, to be compressed, and when making itself and two locating surface formation linear contact lays, so detection operation, manually only needs control System pulls engine valve stem to be axially moveable.Operator can be preferably liberated, accuracy of detection is better ensured that.
As optimization, elastic component is the elastic press of angularly disposed strip, and elastic press lower end is fixed on one It is installed in a briquetting mounting seat of bottom block, the applicator member is installed in elastic press upper end.
So, it is simple in construction and quick and easy for installation, it is easy to implement.
As optimization, curved arc under being in the middle part of elastic press, elastic press upper center extends forward along the length direction Installation rotating shaft is formed with, the applicator member is the roller body being rotatably engaged on rotating shaft is installed, roller body peripheral surface Compressed for being realized with engine valve stem peripheral surface formation point contact after positioning.
So, using roller body as applicator member, rolling friction is formed to improve the smoothness of detection, while roller body Compared to roll structure, more facilitate while itself assemble, additionally it is possible to preferably facilitate realize it is circumferential to engine valve stem after positioning The point contact on surface is compressed, and after formation point contact is compressed, can preferably reduce influence of the compaction process itself to accuracy of detection.
Further, engine valve stem pressing device is along engine valve stem length direction spacing parallel arranging is set after positioning two It is individual, it is pointed to while digital dial gauge detection is rectified between the applicator member of two engine valve stem pressing devices.So, position is formed Two in digital dial gauge both sides compress point, can preferably keep preferably keeping balance gentle while compression Door rod moves flexibility, preferably avoids engine valve stem from beating by pressing device, improves accuracy of detection.
As optimization, the cooperation section is formed on the detection rod rear end fixed part of digital dial gauge, the amesdial The amesdial fixing screws that fixed structure is arranged on amesdial matching seat including spinning, the amesdial fixing screws are just To on amesdial matching seat mating holes set and front end be used for and mating holes in detection bar peripheral surface contact realize fix.
So, it is convenient to implement with simple in construction, and digital dial gauge being slidably matched and fixation is convenient and reliable etc. excellent Point.
As optimization, a lengthening is fixedly installed forward in the axial direction on the active segment of digital dial gauge detection bar front portion Block, lengthening block front end is provided with a detection ball and forms the test side.
So, it can preferably extend the length of detection bar, it is smoothly realized detection, while can be conveniently for difference The corresponding size of the engine valve stem adjustment detection ball of model, makes it more smoothly realize detection, improves detection reliability.
As optimization, lengthen and be provided with vertical crack in the middle part of block front half section along its length, crack to lengthen before block Being integrally formed in half section of left front half section of formation and right front half section, the front end surface of the left front half section and right front half section is used for and examines Survey ball surface laminating and realize the detection ball mounting groove installed.
So, because detection ball mounting groove notch, which is generally, is equal to or slightly less than the spherical with energy of detection ball diameter Detection ball is enough clamped, therefore crack is separated to form block front half section is lengthened after left front half section and right front half section, can be by a left side Front half section and the right front half section elasticity of itself, the embedded installation of convenient detection ball.
Also there is one as optimization, at crack the inner rounded extended region space is expanded to both sides.
So so that when installing detection ball, the position that elastic deformation occurs for left front half section and right front half section is in rear end Extended area locus, can better ensure that front end recovers and remained that detection circle can be clamped after detection ball installation The state of ball, it is to avoid left front half section and right front half section front end produce influence of the elastic deformation to accuracy of detection, improve accuracy of detection.
Further, lengthening in the middle part of the end face of block rear end has a detection bar pilot hole set along its length, detection bar Pilot hole front end and the extended area space of crack are communicated, and digital dial gauge detection bar front end movable part is fixedly mounted on detection In bar pilot hole, and detection bar front end termination is exposed to the extended area space of crack.So, detection bar pilot hole can be facilitated And the assembling and alignment between block are lengthened, to improve accuracy of detection.
Further, lengthening block rear end upper surface, which spins, is provided with detection bar fixing bolt, detection bar fixing bolt front end Fixed for being realized with the contact of digital dial gauge detection bar front end movable part.So, it is simple in construction, and to detection bar fixation side Just it is reliable.
Further, extend transversely through to spin before left front half section and right front half section and be provided with lengthening block fixing bolt.So, After the loading of detection ball is completed, it can be realized by block fixing bolt is lengthened to left front half section and right front half section front end along a left side The limitation of right propagation direction elastic deformation, thoroughly prevents it from producing influence of the elastic deformation to accuracy of detection.
Further, engine valve stem detection device of the invention, in addition to valve stem end surface jitter detection apparatus, the gas Door rod end face run-out detection means includes being provided with valve positioning fixture and valve stem end face run-out detection machine on base, base Structure, the valve positioning fixture is used to realize the supporting positioning of engine valve stem in the horizontal direction, valve stem end surface glitch detection machine Structure includes a dial test indicator, and the engine valve stem end contact after the gauge head of dial test indicator is used for and positioned realizes detection; The valve positioning fixture includes the bar portion peripheral surface support base being arranged on along same level straight line on base, bar portion circumference table The bar portion peripheral surface supporting member for carrying out upward support positioning to bar portion peripheral surface, bar are provided with the support base of face Portion's peripheral surface supporting member is used for and the side contacts of bar portion peripheral surface bottom two realize support positioning.
So, after engine valve stem Linearity surveying is realized, valve stem end surface glitch detection dress can also be further relied on Put the detection for realizing engine valve stem end face run-out tolerance.During detection, valve realizes support by bar portion on valve positioning fixture Positioning, then after the engine valve stem end contact after the gauge head of dial test indicator lower end and positioning, adjustment valve stem position causes Certain precompressed is formed to the gauge head of dial test indicator lower end, dial test indicator shows initial reading, then hand-held valve retainer is slowly Vertical rotary valve can read valve stem end surface run-out tolerance from dial test indicator.The valve locating clip wherein used is signed an undertaking Structure is simple, and positioning is convenient and swift, is realized beneficial to detection.
As optimization, the bar portion peripheral surface supporting member includes two couples support ball that equivalent and horizontal pair is set Body, two pairs of supporting sepheres are arranged at intervals and each medium position is in same level rectilinear direction, two in each pair supporting sephere The individual supporting sephere opposite side first half is used for and support positioning is realized in the contact of bar portion peripheral surface.
So, realize to contact bar portion peripheral surface using two pairs of supporting sepheres being arranged in pairs and support, such bar portion and Supporting member is, in point contact, can at utmost to avoid because the irregular of bar portion itself causes axial line during rotation not exist On straight line so increase detection error, improve detection accuracy.It can ensure stability of strutting system using two pairs of supporting sepheres. The support positioning of bar portion can also be realized when implementing certainly using V-arrangement locating piece, but this structure is two locating surfaces and bar portion Contact, if bar itself circle is irregular, or locating surface itself flatness is not enough, there is not axial line when can cause the bar portion to rotate Point-blank, and then detection error is caused to increase.
Further, two pairs of supporting sepheres are separately positioned on an independent bar portion peripheral surface support base, lever thousand It is divided on the linear position that table is arranged between two pairs of supporting sepheres.Material is more so saved relative to using a support base, Convenient support load, while being detected beneficial to the position between two pairs of supporting sepheres of regulation with more facilitating.
Further, bar portion peripheral surface support base upper center is provided with the rectangular supporting sephere in horizontal cross-section and installed Groove, supporting sephere being arranged in supporting sephere mounting groove in pairs, two paired supporting sepheres are affixed setting and two supports The surrounding of spheroid and mounting groove is affixed setting.So, only two equivalent supporting sepheres need to be put into supporting sephere mounting groove It is interior, it can be automatically positioned without adjustment and be affixed state in level, installed and used efficient and convenient in the extreme.
As optimization, bar portion pressure exerting arrangement, the bar portion pressing machine are additionally provided with any bar portion peripheral surface support base Structure includes a flexure strip, and flexure strip one end is fixed on bar portion peripheral surface support base, and the other end is provided with positioned at two pairs of branch The compressing member above spheroid intermediate connection is supportted, the bar portion upper surface after compressing member is used for and positioned presses.
So, a pressure is applied to bar portion upper surface using simple structure, can prevented in detection process, human hand band Exert a force excessive during dynamic valve rotation or exert a force unbalanced and cause bar portion bounce displacement, better assure that accuracy of detection is reliable.
Further, the compressing member is a roll sleeve being installed in rotation on flexure strip, roll sleeve axis direction and The bar portion axis direction installed after positioning is consistent.So, compressing member and bar portion contact area are reduced, while being rolled both during detection Friction, can preferably reduce influence of the compressing member to detection.
Further, valve stem end surface glitch detection mechanism also includes a bar portion end face positioning seat, the positioning of bar portion end face It is provided with seat and carries out spacing bar portion end face limit component for being offseted with bar portion end face;Bar portion end face limit component is one Horizontally disposed push rod, push rod one end has the top and top end face circle home position for being used for and positioning rear rod portion of cone Contact is spacing;The dial test indicator is fixed on the push rod, and dial test indicator gauge head be located at push rod it is top with Bar portion end face radius of circle is the front side adjacent of the circle location of radius.
So, it is spacing by the round heart contact of top and bar portion end face, it is ensured that to realize to valve stem axial direction It is spacing, it is to avoid due to causing axial displacement when force is uneven and then testing result is impacted during rotary pneumatic door rod.And More importantly the position limiting structure can better ensure that bar portion rotary course axis line position is constant, therefore also not interfere with thick stick Detection of the bar amesdial to bar portion end face run-out, therefore better assure that accuracy of detection.
It is provided with to be horizontally disposed with dial test indicator mounting seat, the dial test indicator mounting seat on the push rod and has push rod Push rod is provided with below pilot hole, push rod pilot hole straight down and clamps seam, the dial test indicator that push rod clamps seam side is installed Mounting seat fixing bolt is provided with seat, mounting seat fixing bolt laterally slidably extends through the lever thousand that push rod clamps seam side Divide table mounting seat and screw thread is rotatably connected in the screwed hole that push rod is clamped on seam opposite side inwall, dial test indicator mounting seat, which is relied on, pushes up Bar pilot hole is slidably fit on push rod and can realized by rotary mounting seat fixing bolt and fixed;Thousand points of the lever Table is fixedly mounted on dial test indicator upper surface.
So, axial location of the regulation dial test indicator on push rod can preferably be facilitated so that dial test indicator Gauge head can be precisely located at the front side adjacent of the top circle location using bar portion end face radius of circle as radius of push rod, with suitable Profit realizes detection.
Further, be provided with a push rod mounting post on bar portion end face positioning seat straight up, push rod level through One push rod mounting hole on push rod mounting post top, push rod mounting post top is also connected with a push rod fixing bolt, and push rod is solid Determine the push rod in bolt front end and push rod mounting hole and abut the fixation for realizing push rod.So, regulation push rod can be easily installed Front and back position.
Further, the vertical push rod that the grafting of push rod mounting post lower end is arranged on bar portion end face positioning seat is installed In post jack, spiral shell just also is positioned through push rod mounting post is connected with to push rod mounting post jack level on bar portion end face positioning seat Bolt, push rod mounting post bolt front end and push rod mounting post, which are abutted, fixes.So, it is the next in convenient regulation push rod mounting post Put, and then adjust push rod height and position, ensure when need to only design production in the middle part of push rod axial line and two pairs of supporting sepheres in same In one vertical plane, you can adjust the round heart of bar portion end face after the top of push rod and positioning more conveniently when mounted Contact positioning.
As optimization, base upper surface is provided with dovetail groove, the bar portion peripheral surface support base along valve orientation Each it is vertically provided with the fixture block matched with dovetail groove with bar portion end face positioning seat lower end to be slidably fit into dovetail groove, bar It is each also vertical on portion's peripheral surface support base and bar portion end face positioning seat that the realization of support base fixing bolt is provided with through spinning It is locked.
So, the mutual distance between two bar portion peripheral surface support bases of convenient regulation and bar portion end face positioning seat, with It is convenient to realize detection.
In summary, the present invention is easy to operate with simple in construction, can realize the inspection of engine valve stem linearity Survey, and be further able to realize that engine valve stem end face run-out tolerance is detected, at the same testing result accurately and reliably the characteristics of.
Brief description of the drawings
Fig. 1 be the embodiment of the present invention in engine valve stem linearity testing apparatus overlook direction structure schematic diagram.
Fig. 2 is Fig. 1 dimensional structure diagram.
Fig. 3 be the embodiment of the present invention in valve stem end surface jitter detection apparatus overlook direction structure schematic diagram.
Fig. 4 is Fig. 3 dimensional structure diagram.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
Embodiment:
A kind of engine valve stem detection device, including engine valve stem linearity testing apparatus, engine valve stem linearity testing apparatus is such as Shown in Fig. 1-2, including bottom block 31, its feature is, engine valve stem positioning fixture and engine valve stem are provided with bottom block 31 Straightness detection mechanism, the engine valve stem positioning fixture includes the location structure that two sections of length directions of following wind one are set, every section Location structure includes two intersecting locating surfaces in angle, and two locating surfaces of two location structures each can be used in and valve Position between the linear contact lay that bar is formed on same straight line, two sections of location structures is formed with a detection breach 32;The valve Bar portion straightness detection mechanism includes an engine valve stem Linearity surveying digital dial gauge 33, and digital dial gauge 33 has one Individual cooperation section, coordinates section to coordinate in the mating holes being arranged on an amesdial matching seat 34 of bottom block 31, described to coordinate Can to be additionally provided with along being slidably matched that digital dial gauge detection bar length direction is slided on amesdial matching seat 34 to valve The amesdial fixed structure that bar portion Linearity surveying is fixed with digital dial gauge, digital dial gauge detection bar is perpendicular to positioning Rear valve stem direction of axis line and just detection breach 32 position is being set, and digital dial gauge detection bar front end is formed with one Test side, detection is realized in the contact of valve stem peripheral surface after the test side is used for and positioned.
So, during detection, engine valve stem to be detected can be positioned on two locating surfaces of two sections of location structures, so After push down engine valve stem make its respectively with two locating surfaces formation linear contact lays, then adjust digital dial gauge position, make its test side Contacted from detection gap position and engine valve stem peripheral surface and produce certain precompressed amount, then by amesdial fixed structure Fix digital dial gauge.While now keeping the linear contact lay of engine valve stem and two locating surfaces, along engine valve stem length side To engine valve stem is pulled, the variable quantity of digital dial gauge is then observed, you can detection obtains the straight line degrees of data of engine valve stem.Its In, mating holes is horizontally disposed with, more to facilitate regulation detection.
Wherein, engine valve stem positioning fixture includes the first locating piece 35 and the second locating piece of overall rectangular-blocklike structure 36, the first locating piece and the laminating of the second locating piece horizontal direction set and are fixed on bottom block and cause the upper table of the first locating piece 35 Face and the laminating side of the second locating piece 36 side form described two locating surfaces, and the detection breach 32 is by the He of the first locating piece 35 The groove of the upper surface of second locating piece 36 is obtained.
So make its simple in construction, the processing and installation of conveniently positioning structure are formed, and cause a level side of formation To two locating surfaces of a vertical direction, two locating surfaces are mutually perpendicular to, and make its positioning reliably, mutual alignment relation precision can Lean on.
Wherein, engine valve stem positioning fixture also includes the 3rd locating piece 37, and the 3rd locating piece 37 relies on screw It is fixed on bottom block 31, the upper surface of the 3rd locating piece 37 is provided with the locating slot of the rectangular body structure of an entirety, locating slot Ground is horizontally disposed locating piece reference plane, and positioning well width and the first locating piece 35 and the second locating piece 36 are along perpendicular to it The width sum for side side surface direction of fitting is consistent so that the first locating piece 35 and the second locating piece 36 are located in locating slot, the The bottom surface of 35 and second locating piece of a positioning block 36 and the laminating of locating piece reference plane, locating slot are located at the side position of digital dial gauge one Overhead surface is less than the first locating piece upper surface location.
So, during assembling, the installation that only need to complete the 3rd locating piece by screw be fixed, then by the first locating piece and the Clamping loads locating slot after the laminating of two locating pieces, installs very convenient quick, and the first locating piece and the second locating piece Rigging error, can be determined by the cooperation between the 3rd locating piece, can more be facilitated reduction mismatch error, be greatly enhanced Accuracy of detection.
Wherein, in addition to engine valve stem pressing device, engine valve stem pressing device includes an elastic component 38 and set An applicator member 39 on elastic component 38, applicator member 39 be located at two locating surface angles just to direction on and in bullet Property the effect of component elastic force is lower and positioning after the contact of engine valve stem peripheral surface compress.
It is so convenient to replace human hand from one pressure pair of direction application just to two locating surface angles by pressing device Engine valve stem after positioning, which is realized, to be compressed, and when making itself and two locating surface formation linear contact lays, so detection operation, manually only needs control System pulls engine valve stem to be axially moveable.Operator can be preferably liberated, accuracy of detection is better ensured that.
Wherein, elastic component 38 is the elastic press of angularly disposed strip, and elastic press lower end is fixed on a peace In a briquetting mounting seat loaded on bottom block, the applicator member 39 is installed in elastic press upper end.
So, it is simple in construction and quick and easy for installation, it is easy to implement.
Wherein, curved arc under being in the middle part of elastic press, extension is formed elastic press upper center forward along the length direction There is installation rotating shaft, the applicator member 39 is the roller body being rotatably engaged on rotating shaft is installed, and roller body peripheral surface is used Compressed in being realized with engine valve stem peripheral surface formation point contact after positioning.
So, using roller body as applicator member, rolling friction is formed to improve the smoothness of detection, while roller body Compared to roll structure, more facilitate while itself assemble, additionally it is possible to preferably facilitate realize it is circumferential to engine valve stem after positioning The point contact on surface is compressed, and after formation point contact is compressed, can preferably reduce influence of the compaction process itself to accuracy of detection.
Wherein, engine valve stem pressing device is two along engine valve stem length direction spacing parallel arranging setting after positioning, together When digital dial gauge detection rectify be pointed between the applicator member 39 of two engine valve stem pressing devices.So, formation is located at Two compression points of digital dial gauge both sides, can preferably keep preferably keeping balance and valve while compression Bar moves flexibility, preferably avoids engine valve stem from beating by pressing device, improves accuracy of detection.
Wherein, the cooperation section is formed on the detection rod rear end fixed part of digital dial gauge 33, and the amesdial is consolidated Determine the amesdial fixing screws 40 that structure is arranged on amesdial matching seat 34 including spinning, the amesdial fixing screws 40 just on amesdial matching seat mating holes set and front end be used for and mating holes in detection bar peripheral surface contact realize It is fixed.
So, it is convenient to implement with simple in construction, and digital dial gauge being slidably matched and fixation is convenient and reliable etc. excellent Point.
Wherein, it is fixedly installed a lengthening block forward in the axial direction on the anterior active segment of digital dial gauge detection bar 41, lengthening block front end is provided with a detection ball 42 and forms the test side.
So, it can preferably extend the length of detection bar, it is smoothly realized detection, while can be conveniently for difference The corresponding size of the engine valve stem adjustment detection ball of model, makes it more smoothly realize detection, improves detection reliability.
Wherein, lengthen and be provided with vertical crack 43 in the middle part of the front half section of block 41 along its length, crack to lengthen before block Being integrally formed in half section of left front half section of formation and right front half section, the front end surface of the left front half section and right front half section is used for and examines Survey the laminating of the surface of ball 42 and realize the detection ball mounting groove installed.
So, because detection ball mounting groove notch, which is generally, is equal to or slightly less than the spherical with energy of detection ball diameter Detection ball is enough clamped, therefore crack is separated to form block front half section is lengthened after left front half section and right front half section, can be by a left side Front half section and the right front half section elasticity of itself, the embedded installation of convenient detection ball.
Wherein, also there is one at the inner of crack 43 and rounded extended region space 44 is expanded to both sides.
So so that when installing detection ball, the position that elastic deformation occurs for left front half section and right front half section is in rear end Extended area locus, can better ensure that front end recovers and remained that detection circle can be clamped after detection ball installation The state of ball, it is to avoid left front half section and right front half section front end produce influence of the elastic deformation to accuracy of detection, improve accuracy of detection.
Wherein, lengthening has a detection bar pilot hole set along its length, detection bar dress in the middle part of the rear end end face of block 41 Distribution front end and the extended area space 44 of crack are communicated, and digital dial gauge detection bar front end movable part is fixedly mounted on detection In bar pilot hole, and detection bar front end termination is exposed to the extended area space 44 of crack.So, detection bar can be facilitated to assemble Assembling and alignment between hole and lengthening block, to improve accuracy of detection.
Wherein, lengthening block 41 rear end upper surface, which spins, is provided with detection bar fixing bolt 45, before detection bar fixing bolt 45 Hold and fixed for being realized with the contact of digital dial gauge detection bar front end movable part.So, it is simple in construction, and detection bar is fixed It is convenient and reliable.
Wherein, extend transversely through to spin before left front half section and right front half section and be provided with lengthening block fixing bolt 46.So, exist After the loading of completion detection ball, it can be realized by block fixing bolt is lengthened to left front half section and right front half section front end edge left and right The limitation of propagation direction elastic deformation, thoroughly prevents it from producing influence of the elastic deformation to accuracy of detection.
The engine valve stem detection device of the present embodiment, in addition to valve stem end surface jitter detection apparatus;Valve stem end surface is jumped As shown in Figure 3-4, including base 1 is provided with valve positioning fixture and the detection of valve stem end face run-out on base to motion detection device Mechanism, the valve positioning fixture is used to realize the supporting positioning of engine valve stem in the horizontal direction, valve stem end surface glitch detection Mechanism includes a dial test indicator 21, and the engine valve stem end contact after the gauge head of dial test indicator 21 is used for and positioned is realized Detection.
So, valve realizes support positioning, the then survey of dial test indicator lower end by bar portion on valve positioning fixture After engine valve stem end contact after head and positioning, adjustment valve stem position causes the gauge head formation one to dial test indicator lower end Determine precompressed, dial test indicator shows initial reading, and then slowly vertical rotary valve can be from dial test indicator for hand-held valve retainer Middle reading valve stem end surface run-out tolerance.
Wherein, the bar portion peripheral surface that the valve positioning fixture includes being arranged on along same level straight line on base is supported It is provided with seat 3, bar portion peripheral surface support base 3 circumferential for carrying out the upward bar portion for supporting positioning to bar portion peripheral surface Surface support component, bar portion peripheral surface supporting member is used for and the side contacts of bar portion peripheral surface bottom two realize support positioning.
So, valve positioning fixture structure is simple, and positioning is convenient and swift, is realized beneficial to detection.
Wherein, the bar portion peripheral surface supporting member includes two pairs of supporting sepheres 5 that equivalent and horizontal pair is set, two Supporting sephere 5 is arranged at intervals and each medium position is in same level rectilinear direction, two branch in each pair supporting sephere 5 Supportting the spheroid opposite side first half is used for and the contact realization support positioning of bar portion peripheral surface.
So, realize to contact bar portion peripheral surface using two pairs of supporting sepheres being arranged in pairs and support, such bar portion and Supporting member is, in point contact, can at utmost to avoid because the irregular of bar portion itself causes axial line during rotation not exist On straight line so increase detection error, improve detection accuracy.It can ensure stability of strutting system using two pairs of supporting sepheres. The support positioning of bar portion can also be realized when implementing certainly using V-arrangement locating piece, but this structure is two locating surfaces and bar portion Contact, if bar itself circle is irregular, or locating surface itself flatness is not enough, there is not axial line when can cause the bar portion to rotate Point-blank, and then detection error is caused to increase.
Wherein, two pairs of supporting sepheres 5 are separately positioned on an independent bar portion peripheral surface support base 3, thousand points of lever Table 21 is arranged on the linear position between two pairs of supporting sepheres.Material is more so saved relative to using a support base, Convenient support load, while being detected beneficial to the position between two pairs of supporting sepheres of regulation with more facilitating.
Wherein, the upper center of bar portion peripheral surface support base 3 is provided with the rectangular supporting sephere mounting groove in horizontal cross-section, Supporting sephere 5 is paired to be arranged in supporting sephere mounting groove, and two paired supporting sepheres are affixed setting and two support balls The surrounding of body and mounting groove is affixed setting.So, two equivalent supporting sepheres need to be only put into supporting sephere mounting groove, It can be automatically positioned without adjustment and be affixed state in level, installed and used efficient and convenient in the extreme.
Wherein, bar portion pressure exerting arrangement, the bar portion pressure exerting arrangement bag are additionally provided with any bar portion peripheral surface support base A flexure strip 6 is included, the one end of flexure strip 6 is fixed on bar portion peripheral surface support base, the other end is provided with positioned at two pairs of supports Compressing member above spheroid intermediate connection, the bar portion upper surface after compressing member is used for and positioned presses.
So, a pressure is applied to bar portion upper surface using simple structure, can prevented in detection process, human hand band Exert a force excessive during dynamic valve rotation or exert a force unbalanced and cause bar portion bounce displacement, better assure that accuracy of detection is reliable.
Wherein, the compressing member is a roll sleeve 7 being installed in rotation on flexure strip, the axis direction of roll sleeve 7 and peace Set the bar portion axis direction behind position consistent.So, reduce compressing member and bar portion contact area, rubbed while being rolled both during detection Wipe, can preferably reduce influence of the compressing member to detection.
Wherein, valve stem end surface glitch detection mechanism also includes a bar portion end face positioning seat 4, bar portion end face positioning seat 4 On be provided with and carry out spacing bar portion end face limit component for being offseted with bar portion end face;Bar portion end face limit component is a water The flat push rod 8 set, one end of push rod 8 has the top and top end face circle home position for being used for and positioning rear rod portion of cone Contact is spacing;The dial test indicator 21 is fixed on the push rod 8, and the gauge head of dial test indicator 21 is located at push rod top The front side adjacent of circle location of the point by radius of bar portion end face radius of circle.
So, it is spacing by the round heart contact of top and bar portion end face, it is ensured that to realize to valve stem axial direction It is spacing, it is to avoid due to causing axial displacement when force is uneven and then testing result is impacted during rotary pneumatic door rod.And More importantly the position limiting structure can better ensure that bar portion rotary course axis line position is constant, therefore also not interfere with thick stick Detection of the bar amesdial to bar portion end face run-out, therefore better assure that accuracy of detection.
It is provided with dial test indicator mounting seat 22, the dial test indicator mounting seat 22 and is horizontally disposed with the push rod 8 Have and be provided with push rod clamping seam below push rod pilot hole, push rod pilot hole straight down, push rod clamps thousand points of the lever of seam side Mounting seat fixing bolt 23 is provided with table mounting seat 22, mounting seat fixing bolt 23 laterally slidably extends through push rod and clamps seam The dial test indicator mounting seat and screw thread of side are rotatably connected in the screwed hole that push rod is clamped on seam opposite side inwall, dial test indicator Mounting seat 22 is slidably fit on push rod 8 by push rod pilot hole and can realized by rotary mounting seat fixing bolt solid It is fixed;The dial test indicator is fixedly mounted on dial test indicator upper surface.
So, axial location of the regulation dial test indicator on push rod can preferably be facilitated so that dial test indicator Gauge head can be precisely located at the front side adjacent of the top circle location using bar portion end face radius of circle as radius of push rod, with suitable Profit realizes detection.
Wherein, it is provided with a push rod mounting post 9 on bar portion end face positioning seat straight up, the level of push rod 8 is through top One push rod mounting hole on bar mounting post top, push rod mounting post top is also connected with a push rod fixing bolt, and push rod is fixed Push rod in bolt front end and push rod mounting hole abuts the fixation for realizing push rod.So, can easily it install before regulation push rod Position afterwards.
Wherein, the vertical push rod mounting post that the grafting of push rod mounting post lower end is arranged on bar portion end face positioning seat is inserted In hole, pushed up on bar portion end face positioning seat also just to push rod mounting post jack level through push rod mounting post bolt is connected with Bar mounting post bolt front end and push rod mounting post, which are abutted, fixes.So, convenient regulation push rod mounting post upper-lower position, and then Push rod height and position is adjusted, is ensured when need to only design production in the middle part of push rod axial line and two pairs of supporting sepheres in same vertical flat In face, you can adjust the round heart contact of the bar portion end face after the top of push rod and positioning more conveniently when mounted fixed Position.
Wherein, base upper surface is provided with dovetail groove 10, the He of bar portion peripheral surface support base 3 along valve orientation The lower end of bar portion end face positioning seat 4 is each vertically provided with the fixture block matched with dovetail groove 10 and is slidably fit into dovetail groove, It is each also vertical on bar portion peripheral surface support base and bar portion end face positioning seat that support base fixing bolt reality is provided with through spinning Now it is locked.
So, the mutual distance between two bar portion peripheral surface support bases of convenient regulation and bar portion end face positioning seat, with It is convenient to realize detection.

Claims (10)

1. a kind of engine valve stem detection device, including engine valve stem linearity testing apparatus, engine valve stem linearity testing apparatus Including bottom block, it is characterised in that be provided with engine valve stem positioning fixture and engine valve stem straightness detection mechanism on bottom block, The engine valve stem positioning fixture includes the location structure that two sections of length directions of following wind one are set, and every section of location structure includes two The intersecting locating surface in angle, two locating surfaces of two location structures each can be used in being formed on same straight line with valve stem Linear contact lay, the position between two sections of location structures is formed with a detection breach;The engine valve stem straightness detection mechanism Including an engine valve stem Linearity surveying digital dial gauge, digital dial gauge has a horizontally disposed cooperation section, matched somebody with somebody Close section coordinate in the mating holes being arranged on an amesdial matching seat of bottom block, it is described be combined into can along numeral thousand points What table detection bar length direction was slided is slidably matched, and is additionally provided with amesdial matching seat to engine valve stem Linearity surveying number The amesdial fixed structure that word amesdial is fixed, valve stem axial line side of the digital dial gauge detection bar after positioning To and just detection gap position is being set, and digital dial gauge detection bar front end is formed with a test side, and the test side is used for Detection is realized with valve stem peripheral surface contact after positioning.
2. engine valve stem detection device as claimed in claim 1, it is characterised in that engine valve stem positioning fixture includes entirety and is in The first locating piece and the second locating piece of rectangular block shape structure, the first locating piece and the laminating of the second locating piece horizontal direction are set simultaneously Laminating side side fixed on bottom block so that the first locating piece upper surface and the second locating piece forms described two locating surfaces, The detection breach is obtained by the groove of the first locating piece and the second locating piece upper surface.
3. engine valve stem detection device as claimed in claim 2, it is characterised in that engine valve stem positioning fixture also includes one 3rd locating piece, the 3rd locating piece is fixed on bottom block by screw, the 3rd locating piece upper surface be provided with one it is whole The locating slot of the rectangular body structure of body, locating slot ground is horizontally disposed locating piece reference plane, and positioning well width and first are determined Position block and the second locating piece are consistent along the width sum perpendicular to its side side surface direction of fitting so that the first locating piece and second is determined Position block is located in locating slot, and the first locating piece and the second locating piece bottom surface and the laminating of locating piece reference plane, locating slot are located at number The overhead surface of the side position of word amesdial one is less than the first locating piece upper surface location.
4. engine valve stem detection device as claimed in claim 1, it is characterised in that also including engine valve stem pressing device, gas Door rod portion pressing device includes an elastic component and an applicator member being arranged on elastic component, and applicator member is located at two Individual locating surface angle just to direction on and elastic component elastic force effect under and positioning after engine valve stem peripheral surface contact Compress.
5. engine valve stem detection device as claimed in claim 4, it is characterised in that elastic component is angularly disposed strip Elastic press, elastic press lower end is fixed on one and is installed in a briquetting mounting seat of bottom block, elastic press upper end The applicator member is installed.
6. engine valve stem detection device as claimed in claim 5, it is characterised in that curved arc under being in the middle part of elastic press, Extension is formed with installation rotating shaft to elastic press upper center forward along the length direction, and the applicator member is to be rotatably engaged Roller body in rotating shaft is installed, pressure is realized in the contact of engine valve stem peripheral surface formation point after roller body peripheral surface is used for and positioned Tightly.
7. engine valve stem detection device as claimed in claim 1, it is characterised in that the cooperation section is formed at digital dial gauge Detection rod rear end fixed part on, the amesdial fixed structure includes be arranged on amesdial matching seat one thousand of spinning Divide table fixing screws, just the mating holes on amesdial matching seat is set for the amesdial fixing screws and front end is used for and coordinated Detection bar peripheral surface contact in hole, which is realized, to be fixed.
8. engine valve stem detection device as claimed in claim 1, it is characterised in that digital dial gauge detection bar front portion active segment On be fixedly installed a lengthening block forward in the axial direction, lengthen block front end and be provided with a detection ball and form the detection End.
9. engine valve stem detection device as claimed in claim 8, it is characterised in that lengthen in the middle part of block front half section along its length Vertical crack is provided with, crack make it that lengthening block front half section forms left front half section and right front half section, the left front half section and the right side It is integrally formed in the front end surface of front half section for realizing the detection ball mounting groove installed with detection ball surface laminating.
10. engine valve stem detection device as claimed in claim 1, it is characterised in that also including valve stem end surface glitch detection Device, the valve stem end surface jitter detection apparatus includes being provided with valve positioning fixture and valve stem end surface on base, base Glitch detection mechanism, the valve positioning fixture is used to realize the supporting positioning of engine valve stem in the horizontal direction, valve stem end surface Glitch detection mechanism includes dial test indicator, the gauge head of dial test indicator be used for and position after engine valve stem end contact Realize detection;The valve positioning fixture includes the bar portion peripheral surface support base being arranged on along same level straight line on base, The bar portion peripheral surface for carrying out upward support positioning to bar portion peripheral surface is provided with bar portion peripheral surface support base Supporting member, bar portion peripheral surface supporting member is used for and the side contacts of bar portion peripheral surface bottom two realize support positioning.
CN201710576047.6A 2017-07-14 2017-07-14 Engine valve stem detection device Pending CN107238336A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108398071A (en) * 2018-04-18 2018-08-14 长江师范学院 Valve detection device
CN108534628A (en) * 2018-04-18 2018-09-14 长江师范学院 A method of it carrying out valve retainer end face using taper surface on rear side of valve retainer and justifies glitch detection
CN108759631A (en) * 2018-05-31 2018-11-06 长江师范学院 Valve retainer detection suit and its valve retainer roundness of external circle error detecting apparatus
CN108981527A (en) * 2018-05-31 2018-12-11 长江师范学院 Valve retainer outer circle and end face accuracy checking method
CN110594181A (en) * 2019-09-19 2019-12-20 无锡锡南铝业技术有限公司 Joint positioning device for air compression shell and method thereof
CN112050761A (en) * 2019-06-06 2020-12-08 陈庭亿 Multipurpose measuring table
CN114509033A (en) * 2022-01-16 2022-05-17 贵州德科纳精密设备制造有限公司 Automatic detection device for valve conical surface jumping and total rod length

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2105364U (en) * 1991-12-09 1992-05-27 杨家祥 Universal cutter grinding fixture
CN201043887Y (en) * 2007-06-20 2008-04-02 株洲硬质合金集团有限公司 Device for detecting straightness and roundness of rod bar
CN201311256Y (en) * 2008-10-16 2009-09-16 北京二七轨道交通装备有限责任公司 Valve detection tool for diesel engine
CN201653315U (en) * 2010-04-13 2010-11-24 浙江吉利汽车研究院有限公司 Valve bounce gauge
CN202229688U (en) * 2011-07-27 2012-05-23 浙江豪情汽车制造有限公司 Valve sealing surface bounce amount measuring tool
CN204902711U (en) * 2015-09-02 2015-12-23 江门市力泰科技有限公司 Little step size measurement instrument
CN106931852A (en) * 2017-05-20 2017-07-07 长江师范学院 A kind of method for realizing engine valve stem positioning and run-out tolerance detection

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2105364U (en) * 1991-12-09 1992-05-27 杨家祥 Universal cutter grinding fixture
CN201043887Y (en) * 2007-06-20 2008-04-02 株洲硬质合金集团有限公司 Device for detecting straightness and roundness of rod bar
CN201311256Y (en) * 2008-10-16 2009-09-16 北京二七轨道交通装备有限责任公司 Valve detection tool for diesel engine
CN201653315U (en) * 2010-04-13 2010-11-24 浙江吉利汽车研究院有限公司 Valve bounce gauge
CN202229688U (en) * 2011-07-27 2012-05-23 浙江豪情汽车制造有限公司 Valve sealing surface bounce amount measuring tool
CN204902711U (en) * 2015-09-02 2015-12-23 江门市力泰科技有限公司 Little step size measurement instrument
CN106931852A (en) * 2017-05-20 2017-07-07 长江师范学院 A kind of method for realizing engine valve stem positioning and run-out tolerance detection

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108398071A (en) * 2018-04-18 2018-08-14 长江师范学院 Valve detection device
CN108534628A (en) * 2018-04-18 2018-09-14 长江师范学院 A method of it carrying out valve retainer end face using taper surface on rear side of valve retainer and justifies glitch detection
CN108759631A (en) * 2018-05-31 2018-11-06 长江师范学院 Valve retainer detection suit and its valve retainer roundness of external circle error detecting apparatus
CN108981527A (en) * 2018-05-31 2018-12-11 长江师范学院 Valve retainer outer circle and end face accuracy checking method
CN108981527B (en) * 2018-05-31 2020-06-30 长江师范学院 Method for detecting precision of excircle and end face of valve plate
CN112050761A (en) * 2019-06-06 2020-12-08 陈庭亿 Multipurpose measuring table
CN110594181A (en) * 2019-09-19 2019-12-20 无锡锡南铝业技术有限公司 Joint positioning device for air compression shell and method thereof
CN110594181B (en) * 2019-09-19 2021-07-06 无锡锡南科技股份有限公司 Joint positioning device for air compression shell and method thereof
CN114509033A (en) * 2022-01-16 2022-05-17 贵州德科纳精密设备制造有限公司 Automatic detection device for valve conical surface jumping and total rod length
CN114509033B (en) * 2022-01-16 2023-08-04 贵州德科纳精密设备制造有限公司 Automatic detection device for valve conical surface runout and total length of rod

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