CN106979742A - A kind of valve stem bar portion accuracy checking method - Google Patents
A kind of valve stem bar portion accuracy checking method Download PDFInfo
- Publication number
- CN106979742A CN106979742A CN201710379311.7A CN201710379311A CN106979742A CN 106979742 A CN106979742 A CN 106979742A CN 201710379311 A CN201710379311 A CN 201710379311A CN 106979742 A CN106979742 A CN 106979742A
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- China
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- bar portion
- valve stem
- push rod
- face
- peripheral surface
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/28—Measuring arrangements characterised by the use of mechanical techniques for measuring roughness or irregularity of surfaces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/003—Measuring of motor parts
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- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a kind of valve stem bar portion accuracy checking method, the step of including carrying out valve stem bar portion end face flatness detection, it is characterized in that, during valve stem bar portion end face flatness detection, support positioning is realized to the side contacts of engine valve stem peripheral surface bottom two of horizontality using bar portion peripheral surface supporting member, bar portion end face is offseted using bar portion end face limit component, and it is spacing to carry out, again using the engine valve stem end contact after the gauge head of dial test indicator and positioning, then rotary valve realizes the detection to engine valve stem end face flatness；The spheroid that the bar portion peripheral surface supporting member is set using equivalent and horizontal pair is obtained.The present invention, which has, implements simple, with low cost, easy to operate, can realize the detection of engine valve stem end face flatness and engine valve stem run-out tolerance, and testing result is accurately and reliably, the advantages of improving Product Precision beneficial to preferably control.
Description
Technical field
Part of automobile engine of the present invention produces detection technique field, more particularly to a kind of valve stem bar portion accuracy detection
Method.
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.
Whether valve stem end surface is smooth, is 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.Revolved one-turn in addition, engine valve stem run-out tolerance is engine valve stem around bar portion axis
Or the maximum jitter amount allowed during continuous rotary.Run-out tolerance is for controlling engine valve stem surface profile key element relative to base
Fiducial axis line keeps the item of form and position of certain precision.To engine valve stem, other element to be measured have Comprehensive Control work to run-out tolerance
With, certain form error can be both controlled, and have control action to other positions error, therefore engine valve stem run-out tolerance is
The guarantee of engine valve stem other form and position tolerances detection.
Therefore how to design a kind of implementation simply, easy to operate, detection is reliable, valve stem bar portion precision with low cost
Detection method realizes the detection to valve stem end surface flatness and engine valve stem run-out tolerance, as there is considered solution
Problem.
The content of the invention
The technical problem to be solved in the present invention is：It is simple how a kind of implementation is provided, it is with low cost, it is easy to operate fast
Victory, can realize engine valve stem end face flatness detection, and realize the detection of engine valve stem run-out tolerance, and testing result is accurate
True reliable valve stem bar portion accuracy checking method.
In order to solve the above-mentioned technical problem, present invention employs following technical scheme.
A kind of valve stem bar portion accuracy checking method, including the step of progress valve stem bar portion end face flatness detection, its
It is characterised by, during valve stem bar portion end face flatness detection, using valve of the bar portion peripheral surface supporting member to horizontality
The side contacts of bar portion peripheral surface bottom two realize support positioning, and bar portion end face is offseted using bar portion end face limit component and limited
Engine valve stem end contact behind position, then gauge head using dial test indicator and positioning, then rotary valve are realized to engine valve stem
The detection of end face flatness；The spheroid that the bar portion peripheral surface supporting member is set using equivalent and horizontal pair is obtained.
So, the step of progress valve stem bar portion end face flatness detection is included in this method, and wherein employ
The spheroid that horizontal pair is set realizes the support to engine valve stem, when making its detection rotation, and bar portion and supporting member are connect in point
Touch, contact area is minimum, it is to avoid the influence of bar portion itself precision opposite end surface evenness testing result, improves accuracy of detection.
Specifically, this method employs following valve stem bar portion precision testing device and realized, the valve stem bar portion
Precision testing device includes being provided with valve positioning fixture and valve stem end face run-out testing agency, the gas on base, base
Door positioning fixture is used to realize the supporting positioning of engine valve stem in the horizontal direction, and valve stem end surface glitch detection mechanism includes one
Dial test indicator, 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 week
It is provided with to surface support seat and supports structure for carrying out the bar portion peripheral surface of upward support positioning to bar portion peripheral surface
Part, bar portion peripheral surface supporting member is used for and the side contacts of bar portion peripheral surface bottom two realize support positioning；
The bar portion peripheral surface supporting member includes two pairs of supporting sepheres that equivalent and horizontal pair is set, two pairs of supporting sepheres
It is arranged at intervals and each medium position is in same level rectilinear direction, two supporting sephere opposite sides in each pair supporting sephere
The first half is used for and support positioning is realized in the contact of bar portion peripheral surface.
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 valve positioning fixture structure is simple, and positioning is convenient and swift, is realized beneficial to detection.
Wherein, 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
Be in point contact, can at utmost avoid due to bar portion itself it is irregular cause rotation when axial line not in straight line
Upper and then increase detection error, improves detection accuracy.It can ensure stability of strutting system using two pairs of supporting sepheres.
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.
Further, valve stem bar portion precision testing device also includes engine valve stem glitch detection mechanism, and engine valve stem is jumped
Dynamic testing agency includes a digital dial gauge, digital dial gauge is vertically arranged and contact of lower end be used for and position after valve
Detection is realized in the contact of bar portion peripheral surface；Engine valve stem glitch detection mechanism also includes a magnetic force with magnetic switch function
Gauge stand, magnetic stand lower end laminating is arranged on the regulation horizontal plane of a permeability magnetic material of base upper surface, digital dial gauge
It is arranged on by mounting bracket on magnetic stand；
In this method, while valve stem bar portion end face flatness detection is realized or afterwards, then by engine valve stem bounce
Testing agency realizes the detection to valve stem bar portion run-out tolerance again.
, can be by closing magnetic switch, mobile magnetic stand side when realizing the detection to valve stem bar portion run-out tolerance
Just position all around is adjusted, regulation opens magnetic switch after finishing and fixes magnetic stand, thus can easily adjust
The position all around of whole digital dial gauge, it is convenient to realize alignment detection；Then the valve stem after rotational positioning, observes numeral thousand
Divide meter reading change, that is, obtain engine valve stem run-out tolerance, can preferably grasp valve stem bar portion precision；Gas is only needed during detection
Door rod bar portion end face flatness（That is bar portion end face run-out tolerance）Detection is not up to standard, or the detection of engine valve stem run-out tolerance does not reach
Mark, can determine whether that engine valve stem production precision is not up to standard, and then preferably improve product quality.
As optimization, the mounting bracket includes a vertical installation montant being fixed on magnetic stand, installs montant
Upper to be folded with a Mobile base vertically movablely, Mobile base side is provided with a tightening knob, and tightening knob is used to move
Dynamic seat is fastened on installation montant, and Mobile base opposite side is provided with the second mounting rod, and the second mounting rod front end is fixedly mounted described
Digital dial gauge.So, Mobile base height and position can be conveniently adjusted, and then adjusts the second mounting rod height and position, makes it
The contact of digital dial gauge is conveniently realized with the contact of engine valve stem to realize detection.
During implementation, Mobile base side is provided with one of vertical clamping seam, clamps seam inner side and extends to installation montant, clamps
Seam both sides stretch out to form clamping section, are provided with mounting hole on the outside of the clamping section of side and are rotatably mounted with the second installation
Bar fixes round platform, and the second mounting rod fixes oblique through second mounting rod is fixedly connected with the outside of round platform, and tightening knob is set
On the clamping section of opposite side, and the inner stud activity of tightening knob passes through clamping section and screw thread is screwed in the second mounting rod and consolidated
Determine in the screw on the inner end face of round platform.
So, unclamp tightening knob can realize simultaneously to Mobile base install montant on upper-lower position tentatively regulation with
And second mounting rod angle of inclination regulation；Regulation keeps the angle of inclination of the second mounting rod constant while fastening is revolved afterwards in place
Button is tightened, while realizing to fixation of the Mobile base on montant is installed and the fixation to the second mounting rod incline direction.
Further the second mounting rod front end is provided with a 3rd mounting rod clip slot, the 3rd mounting rod clip slot rotatably
Ground, which is folded with to spin on the outside of the 3rd mounting rod, the second mounting rod front portion the 3rd mounting rod clip slot of correspondence, is provided with the 3rd installation
Bar fixed knob, the inner stud of the 3rd mounting rod fixed knob is screwed on the second mounting rod and inner and the 3rd mounting rod is supported
Fixation is connect, digital dial gauge is arranged on the 3rd mounting rod.
So, can be by adjusting the angle between the 3rd mounting rod and the second mounting rod, regulation digital dial gauge is in
Vertical state, to improve accuracy of detection.
Further, the 3rd mounting rod front end is provided with a crack axially forward, and the inner left and right sides of crack is set
Be equipped with the holding tank of arc, holding tank be used for and digital dial gauge on and shell be that the contact installing pipe being fixed as one coordinates real
Now clamp, the 3rd installation rod outer surface of crack front end side, which is also extended through, is connected with an amesdial clamping knob, amesdial folder
Tight knob front end is movably screwed onto in the screw of crack opposite side through the 3rd mounting rod and screw thread of crack side.
So, rotation amesdial clamping knob can conveniently realize the elastic control clamped to digital dial gauge, be beneficial to
Realize to the vernier control on digital dial gauge vertical direction.
In summary, the present invention, which has, implements simple, with low cost, easy to operate, can realize engine valve stem end
The detection of surface evenness and engine valve stem run-out tolerance, and testing result is accurately and reliably, and product is improved beneficial to preferably control
The advantages of precision.
Brief description of the drawings
When Fig. 1 is implementation of the invention, the valve stem bar portion precision testing device of use removes engine valve stem bounce inspection
Survey the structure schematic diagram from overlook direction after mechanism.
Fig. 2 is Fig. 1 dimensional structure diagram.
Fig. 3 removes dial test indicator for the valve stem bar portion precision testing device of the present invention and dial test indicator is installed
Dimensional structure diagram after seat.
Fig. 4 is that the sectional view of seating portion is individually moved in Fig. 3.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
Embodiment：
A kind of valve stem bar portion accuracy checking method, including the step of progress valve stem bar portion end face flatness detection, its feature
It is, during valve stem bar portion end face flatness detection, using engine valve stem of the bar portion peripheral surface supporting member to horizontality
The side contacts of peripheral surface bottom two realize support positioning, and bar portion end face is offseted using bar portion end face limit component, and it is spacing to carry out,
Again using the engine valve stem end contact after the gauge head of dial test indicator and positioning, then rotary valve is realized to engine valve stem end face
The detection of flatness；The spheroid that the bar portion peripheral surface supporting member is set using equivalent and horizontal pair is obtained.
So, the step of progress valve stem bar portion end face flatness detection is included in this method, and wherein employ
The spheroid that horizontal pair is set realizes the support to engine valve stem, when making its detection rotation, and bar portion and supporting member are connect in point
Touch, contact area is minimum, it is to avoid the influence of bar portion itself precision opposite end surface evenness testing result, improves accuracy of detection.
Specifically, this method employs valve stem bar portion precision testing device realization as Figure 1-4, the valve
Bar bar portion precision testing device includes being provided with valve positioning fixture and valve stem end face run-out testing agency on base 1, base
And engine valve stem glitch detection mechanism, the valve positioning fixture is for realizing that the supporting of engine valve stem in the horizontal direction is determined
Position, valve stem end surface glitch detection mechanism includes a dial test indicator 21, after the gauge head of dial test indicator 21 is used for and positioned
Engine valve stem end contact realize detection；Engine valve stem glitch detection mechanism includes a digital dial gauge 2, digital dial gauge
Detection is realized in engine valve stem peripheral surface contact after 2 vertically arranged and lower end contacts are used for and positioned.
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.Valve stem bar portion end face flatness is only needed during detection（That is bar portion end face run-out tolerance）Inspection
Survey not up to standard, or the detection of engine valve stem run-out tolerance is not up to standard, can determine whether that engine valve stem production precision is not up to standard, Jin Ergeng
Improve product quality well.
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.
Wherein, engine valve stem glitch detection mechanism also includes a magnetic stand 11 with magnetic switch function, magnetic force
The laminating of the lower end of gauge stand 11 is arranged on the regulation horizontal plane of a permeability magnetic material of base upper surface, and digital dial gauge 2 passes through peace
Support is filled to be arranged on magnetic stand.
So, can be by closing magnetic switch, mobile magnetic stand is conveniently adjusted position all around, and regulation is finished
Magnetic switch is opened afterwards and fixes magnetic stand, thus can easily adjust the position all around of digital dial gauge, side
Just alignment detection is realized.
Wherein, the mounting bracket includes a vertical installation montant 12 being fixed on magnetic stand, installs montant 12
Upper to be folded with a Mobile base 13 vertically movablely, the side of Mobile base 13 is provided with a tightening knob 16, and tightening knob is used
Installed in Mobile base 13 is fastened on montant 12, the opposite side of Mobile base 13 is provided with the second mounting rod 14, the second mounting rod 14
The digital dial gauge 2 is fixedly mounted in front end.So, Mobile base height and position can be conveniently adjusted, and then adjusts second and is pacified
Bar height and position is filled, makes it conveniently realize the contact of digital dial gauge with the contact of engine valve stem to realize detection.
When wherein implementing, the side of Mobile base 13 is provided with one of vertical clamping seam, clamps to extend on the inside of seam and installs perpendicular
Bar 12, clamps seam both sides and stretches out to form clamping section, be provided with mounting hole on the outside of the clamping section of side and be rotatably mounted
There is the second mounting rod to fix round platform 15, it is oblique through being fixedly connected with second mounting rod that the second mounting rod fixes the outside of round platform 15
14, tightening knob 16 is arranged on the clamping section of opposite side, and the inner stud activity of tightening knob passes through clamping section and screw thread
The second mounting rod is screwed in fix in the screw on the inner end face of round platform.
So, unclamp tightening knob can realize simultaneously to Mobile base install montant on upper-lower position tentatively regulation with
And second mounting rod angle of inclination regulation；Regulation keeps the angle of inclination of the second mounting rod constant while fastening is revolved afterwards in place
Button is tightened, while realizing to fixation of the Mobile base on montant is installed and the fixation to the second mounting rod incline direction.More
Conveniently realize the regulation control of digital dial gauge position.
Wherein the front end of the second mounting rod 14 is provided with a 3rd mounting rod clip slot, the 3rd mounting rod clip slot rotationally
It is folded with to spin on the outside of the 3rd mounting rod 17, the 3rd mounting rod clip slot of anterior correspondence of the second mounting rod 14 and is provided with the 3rd peace
Bar fixed knob 18 is filled, the inner stud of the 3rd mounting rod fixed knob 18 is screwed on the second mounting rod and inner and the 3rd peace
Fill bar 17 and abut fixation, digital dial gauge 2 is arranged on the 3rd mounting rod 17.
So, can be by adjusting the angle between the 3rd mounting rod and the second mounting rod, regulation digital dial gauge is in
Vertical state, to improve accuracy of detection.
Wherein, the front end of the 3rd mounting rod 17 is provided with a crack axially forward, and the inner left and right sides of crack is set
Have a holding tank of arc, holding tank be used for and digital dial gauge 2 on and shell be that the contact installing pipe being fixed as one coordinates real
Now clamp, the 3rd installation rod outer surface of crack front end side, which is also extended through, is connected with an amesdial clamping knob 19, amesdial
Clamping knob front end is movably screwed onto in the screw of crack opposite side through the 3rd mounting rod and screw thread of crack side.
So, rotation amesdial clamping knob can conveniently realize the elastic control clamped to digital dial gauge, be beneficial to
Realize to the vernier control on digital dial gauge vertical direction.
When said apparatus is used for valve stem end surface glitch detection, it can first remove engine valve stem glitch detection mechanism and avoid doing
Removed after relating to influence, i.e., the switch for first closing magnetic stand, then realize valve stem end surface glitch detection；Valve stem end surface is beated
The support base fixing bolt on bar portion peripheral surface support base 3 and bar portion end face positioning seat 4 is first unclamped during detection, bar is moved left and right
The position of portion's peripheral surface support base and bar portion end face positioning seat on dovetail groove, adjusts the top of push rod and arrives rightmost one
The distance between a pair of supporting sepheres on bar portion peripheral surface support base are less than engine valve stem length to be detected, then fasten
Support base fixing bolt；Then pull-up flexure strip 6, the bar portion of valve to be detected is put into and supported on two pairs of supporting sepheres,
And cause bar portion end face to bar portion end face positioning seat；The upper-lower position of push rod is regulated, makes its top and bar portion end face circle
Center of circle contact positioning, then puts down flexure strip so that roll sleeve and bar portion upper surface on flexure strip are realized to the whole of bar portion
Body is positioned；Then mounting seat fixing bolt, axial location of the adjustment dial test indicator on push rod so that dial test indicator are unclamped
Gauge head and bar portion end contact and produce pre- reading shown on certain precompression, dial test indicator, then hand-held valve retainer
Portion keeps valve stem end surface and push rod to rotate the circle of valve one in the case of being in contact, and observation dial test indicator reading situation changes,
Valve stem end surface bounce situation is can obtain, engine valve stem end face flatness detection is realized.
When then realizing engine valve stem glitch detection, first engine valve stem glitch detection mechanism is installed, i.e., by magnetic stand
It is placed on the regulation horizontal plane of base upper surface and regulates front and back position, then open magnetic stand switch and realizes fixation.Then tear open
After dial test indicator and dial test indicator mounting seat, engine valve stem glitch detection is realized.During detection, bar portion is first unclamped circumferential
Support base fixing bolt on surface support seat 3 and bar portion end face positioning seat 4, moves left and right bar portion peripheral surface support base and bar
Position of the end surface positioning seat on dovetail groove, adjusts the top on one bar portion peripheral surface support base of rightmost of push rod
The distance between a pair of supporting sepheres be less than engine valve stem length to be detected, then fastened support base fixing bolt；Then
Pull-up flexure strip 6, the bar portion of valve to be detected is put into and supported on two pairs of supporting sepheres, and causes bar portion end face to bar
End surface positioning seat；The upper-lower position of push rod is regulated, makes its top and the center of circle contact of bar portion end face circle is positioned, then put down
Flexure strip so that roll sleeve and bar portion upper surface on flexure strip are realized to be positioned to the entirety of bar portion；It is then shut off magnetic power meter
The magnetic switch of seat 11, moves forward and backward regulation magnetic stand position so that digital dial gauge lower end contact is right against engine valve stem
Center position above peripheral surface, then opens magnetic switch and realizes that magnetic stand is positioned, then adjust thousand points of numeral up and down again
The height and position of table so that contact pushes down engine valve stem, amesdial shows reading, now fixes digital dial gauge height not
Become, rotate valve by hand, be the run-out tolerance for obtaining engine valve stem according to digital dial gauge readings situation.
When implementing certainly, above-mentioned two detections can also be directly carried out simultaneously without dismantling component, only there need to be two operations
Personnel observe and record digital dial gauge and the reading situation of change of dial test indicator simultaneously.The time can further be saved
Improve detection efficiency.
Claims (10)
1. a kind of valve stem bar portion accuracy checking method, including the step of progress valve stem bar portion end face flatness detection, it is special
Levy and be, during valve stem bar portion end face flatness detection, using valve stem of the bar portion peripheral surface supporting member to horizontality
The side contacts of portion peripheral surface bottom two realize support positioning, and bar portion end face is offseted using bar portion end face limit component and limited
Engine valve stem end contact behind position, then gauge head using dial test indicator and positioning, then rotary valve are realized to engine valve stem
The detection of end face flatness；The spheroid that the bar portion peripheral surface supporting member is set using equivalent and horizontal pair is obtained.
2. valve stem bar portion accuracy checking method as claimed in claim 1, it is characterised in that employ following valve stem bar
Portion's precision testing device realizes that the valve stem bar portion precision testing device includes being provided with valve locating clip on base, base
Tool and valve stem end face run-out testing agency, the valve positioning fixture are used to realize that the supporting of engine valve stem in the horizontal direction is determined
Position, valve stem end surface glitch detection mechanism includes dial test indicator, the gauge head of dial test indicator be used for and position after gas
Detection is realized in the contact of door rod end surface；
The valve positioning fixture includes the bar portion peripheral surface support base being arranged on along same level straight line on base, bar portion week
It is provided with to surface support seat and supports structure for carrying out the bar portion peripheral surface of upward support positioning to bar portion peripheral surface
Part, bar portion peripheral surface supporting member is used for and the side contacts of bar portion peripheral surface bottom two realize support positioning；
The bar portion peripheral surface supporting member includes two pairs of supporting sepheres that equivalent and horizontal pair is set, two pairs of supporting sepheres
It is arranged at intervals and each medium position is in same level rectilinear direction, two supporting sephere opposite sides in each pair supporting sephere
The first half is used for and support positioning is realized in the contact of bar portion peripheral surface.
3. valve stem bar portion accuracy checking method as claimed in claim 2, it is characterised in that two pairs of supporting sepheres are set respectively
On an independent bar portion peripheral surface support base, dial test indicator is arranged at the linear position between two pairs of supporting sepheres
On.
4. valve stem bar portion accuracy checking method as claimed in claim 2, it is characterised in that on bar portion peripheral surface support base
End middle part is provided with the rectangular supporting sephere mounting groove in horizontal cross-section, supporting sephere in pairs be arranged on supporting sephere mounting groove
Interior, two paired supporting sepheres are affixed setting and the surrounding of two supporting sepheres and mounting groove is affixed setting.
5. valve stem bar portion accuracy checking method as claimed in claim 4, it is characterised in that any bar portion peripheral surface support
Bar portion pressure exerting arrangement is additionally provided with seat, the bar portion pressure exerting arrangement includes a flexure strip, and flexure strip one end is fixed on bar portion
On peripheral surface support base, the other end is provided with the compressing member above two pairs of supporting sephere intermediate connections, and compressing member is used for
With the bar portion upper surface pressure after positioning.
6. valve stem bar portion accuracy checking method as claimed in claim 5, it is characterised in that the compressing member is rotationally
A roll sleeve on flexure strip, roll sleeve axis direction is consistent with the bar portion axis direction after positioning is installed.
7. valve stem bar portion accuracy checking method as claimed in claim 2, it is characterised in that valve stem end surface glitch detection machine
Structure also includes being provided with bar portion end face positioning seat, bar portion end face positioning seat for spacing with the progress that offsets of bar portion end face
Bar portion end face limit component；Bar portion end face limit component is a horizontally disposed push rod, and push rod one end has the top of cone
The sharp and top end face circle home position contact for being used for and positioning rear rod portion is spacing；The dial test indicator is fixed on described
On push rod, and dial test indicator gauge head be located at the top circle location using bar portion end face radius of circle as radius of push rod front side
Adjacent.
8. valve stem bar portion accuracy checking method as claimed in claim 7, it is characterised in that be provided with lever on the push rod
Being horizontally disposed with amesdial mounting seat, the dial test indicator mounting seat has a push rod pilot hole, below push rod pilot hole it is vertical to
It is arranged with push rod and clamps seam, push rod clamps and is provided with mounting seat fixing bolt in the dial test indicator mounting seat of seam side, pacifies
Dress seat fixing bolt laterally slidably extends through the dial test indicator mounting seat of push rod clamping seam side and screw thread is rotatably connected in push rod
Clamp in the screwed hole on seam opposite side inwall, dial test indicator mounting seat is slidably fit into push rod by push rod pilot hole
Go up and can be realized by rotary mounting seat fixing bolt and fixed；The dial test indicator is fixedly mounted on dial test indicator upper table
On face.
9. valve stem bar portion accuracy checking method as claimed in claim 7, it is characterised in that vertical on bar portion end face positioning seat
A push rod mounting post is set up, push rod level is through a push rod mounting hole on push rod mounting post top, push rod peace
The push rod that dress post top is also connected with a push rod fixing bolt, push rod fixing bolt front end and push rod mounting hole, which is abutted, to be realized
The fixation of push rod.
10. valve stem bar portion accuracy checking method as claimed in claim 2, it is characterised in that valve stem bar portion accuracy detection
Equipment also includes engine valve stem glitch detection mechanism, and engine valve stem glitch detection mechanism includes a digital dial gauge, numeral thousand
Point table is vertically arranged and contact of lower end be used for and position after the contact of engine valve stem peripheral surface realize and detect；Engine valve stem is jumped
Dynamic testing agency also includes a magnetic stand with magnetic switch function, and the laminating of magnetic stand lower end is arranged on base upper table
On the regulation horizontal plane of one permeability magnetic material in face, digital dial gauge is arranged on magnetic stand by mounting bracket；
It is real again by engine valve stem glitch detection mechanism while valve stem bar portion end face flatness detection is realized or afterwards
Now to the detection of valve stem bar portion run-out tolerance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710379311.7A CN106979742A (en) | 2017-05-25 | 2017-05-25 | A kind of valve stem bar portion accuracy checking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710379311.7A CN106979742A (en) | 2017-05-25 | 2017-05-25 | A kind of valve stem bar portion accuracy checking method |
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| Publication Number | Publication Date |
|---|---|
| CN106979742A true CN106979742A (en) | 2017-07-25 |
Family
ID=59344884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710379311.7A Pending CN106979742A (en) | 2017-05-25 | 2017-05-25 | A kind of valve stem bar portion accuracy checking method |
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| Country | Link |
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| CN (1) | CN106979742A (en) |
Cited By (4)
| 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 |
| CN112906167A (en) * | 2021-05-06 | 2021-06-04 | 中国人民解放军国防科技大学 | Assembly precision evaluation method, system and equipment based on dynamic tolerance |
| 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 |
| CN117147437A (en) * | 2023-10-30 | 2023-12-01 | 常州裕能石英科技有限公司 | Automatic detection device for inner peripheral surface and outer peripheral surface of quartz crucible |
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| 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 |
| CN205279922U (en) * | 2015-12-14 | 2016-06-01 | 湖南罗佑发动机部件有限公司 | Utensil is examined to engine valve pole |
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| 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 |
| CN205279922U (en) * | 2015-12-14 | 2016-06-01 | 湖南罗佑发动机部件有限公司 | Utensil is examined to engine valve pole |
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Cited By (5)
| 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 |
| CN112906167A (en) * | 2021-05-06 | 2021-06-04 | 中国人民解放军国防科技大学 | Assembly precision evaluation method, system and equipment based on dynamic tolerance |
| 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 |
| CN117147437A (en) * | 2023-10-30 | 2023-12-01 | 常州裕能石英科技有限公司 | Automatic detection device for inner peripheral surface and outer peripheral surface of quartz crucible |
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Application publication date: 20170725 |