CN206695714U - A kind of engine valve stem jitter detection apparatus - Google Patents
A kind of engine valve stem jitter detection apparatus Download PDFInfo
- Publication number
- CN206695714U CN206695714U CN201720564700.2U CN201720564700U CN206695714U CN 206695714 U CN206695714 U CN 206695714U CN 201720564700 U CN201720564700 U CN 201720564700U CN 206695714 U CN206695714 U CN 206695714U
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- China
- Prior art keywords
- bar portion
- valve stem
- engine valve
- peripheral surface
- positioning
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Abstract
The utility model discloses a kind of engine valve stem jitter detection apparatus, including base, it is characterized in that, valve positioning fixture and engine valve stem glitch detection mechanism are provided with base, the valve positioning fixture is used to realize the supporting positioning of engine valve stem in the horizontal direction, engine valve stem glitch detection mechanism includes a digital dial gauge, digital dial gauge is vertically arranged and the contact of lower end be used for and position after the contact of engine valve stem peripheral surface realize detection.The present apparatus can realize the detection of engine valve stem run-out tolerance, and with simple in construction, easy to operate, testing result accurately and reliably the advantages that.
Description
Technical field
The utility model part of automobile engine produces detection technique field, more particularly to a kind of bounce inspection of engine valve stem
Survey device.
Background technology
Automobile engine can be converted into mechanical energy by the chemical energy of fuel or by other forms, be provided for automobile dynamic
Power, it 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, belong to one of automobile engine key components and parts, be the door of engine chamber, be 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 opens and closes, 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 almost owns with valve
There is substantial connection at position, and traditional engine valve stem detection mode, which needs to rely on, largely manually to be completed, and 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 run-out tolerance is the maximum that engine valve stem is revolved one-turn around bar portion axis or allowed during continuous rotary
Jerk value.Run-out tolerance is for controlling position of the engine valve stem surface profile key element relative to the certain precision of datum axis holding
Tolerance project.To engine valve stem, other element to be measured have Comprehensive Control effect to run-out tolerance, can both control certain shape
Error, and have control action to other positions error, therefore engine valve stem run-out tolerance is engine valve stem other form and position tolerances inspection
The guarantee of survey.
Therefore how to design it is a kind of simple in construction, it is easy to operate, detect reliable engine valve stem jitter detection apparatus
The detection to engine valve stem run-out tolerance is realized, turning into has considered solve the problems, such as.
Utility model content
The technical problems to be solved in the utility model is：It is simple in construction how one kind is provided, it is easy to operate, can
Realize the detection of engine valve stem run-out tolerance, and testing result accurately and reliably engine valve stem jitter detection apparatus.
In order to solve the above-mentioned technical problem, the utility model employs following technical scheme.
A kind of engine valve stem jitter detection apparatus, including base, it is characterised in that valve positioning fixture is provided with base
With engine valve stem glitch detection mechanism, the valve positioning fixture is used to realize the supporting positioning of engine valve stem in the horizontal direction,
Engine valve stem glitch detection mechanism includes a digital dial gauge, and digital dial gauge is vertically arranged and the contact of lower end is used for and determined
Detection is realized in engine valve stem peripheral surface contact behind position.
So, valve realizes support positioning by bar portion on valve positioning fixture, and then digital dial gauge lower end is tactile
After engine valve stem peripheral surface contact after head and positioning, rotary valve can read engine valve stem bounce from digital dial gauge
Tolerance.
As optimization, the valve positioning fixture includes the bar portion peripheral surface being arranged on along same level straight line on base
Support base and bar portion end face positioning seat, it is provided with bar portion peripheral surface support base upward for being carried out to bar portion peripheral surface
The bar portion peripheral surface supporting member of positioning is supported, bar portion peripheral surface supporting member is used for and bar portion peripheral surface bottom both sides
Support positioning is realized in contact, is provided with the positioning seat of bar portion end face and is carried out spacing bar portion end face limit for being offseted with bar portion end face
Position component.
So, valve positioning fixture 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 couple that equivalent and horizontal pair is set and supports ball
Body, two pairs of supporting sepheres are arranged at intervals and each medium position and bar portion end face limit component are in same level rectilinear direction
On, two supporting sephere opposite side first halves are used in each pair supporting sephere 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 be avoided because the irregular of bar portion itself causes axial line during rotation not exist
On straight line and then increase detection error, improve detection accuracy.It can ensure stability of strutting system using two pairs of supporting sepheres.
V-arrangement locating piece can also be used to realize the support positioning of bar portion when implementing certainly, but this structure is two locating surfaces and bar portion
Contact, if bar itself circle is irregular, or locating surface itself flatness is inadequate, there is no 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, numeral thousand
The position for being divided to table to be arranged between two pairs of supporting sepheres.So material, convenient branch are more saved relative to using a support base
Load is supportted, while beneficial to the position between two pairs of supporting sepheres of regulation with more convenient detection.
Further, bar portion peripheral surface support base upper center is provided with the rectangular supporting sephere installation in horizontal cross-section
Groove, supporting sephere is paired to be arranged in supporting sephere mounting groove, and 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
The excessive or force that exerted a force during dynamic valve rotation is unbalanced and causes bar portion to be beated upwards, better assures 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
Bar portion axis direction after installation positioning is consistent.So, rolling both when reducing compressing member and bar portion contact area, while detecting
Friction, can preferably reduce influence of the compressing member to detection.
As optimization, 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 for being used for and positioning rear rod portion contacts spacing.So, it is round by top and bar portion end face
Heart contact is spacing, it is ensured that spacing balance is reliable, and more importantly the position limiting structure can better ensure that bar portion rotates
During axle center line position it is constant, avoid in rotary course because bar portion end face flatness not enough causes to bar portion axle center line position
Influence caused by change, ensures accuracy of detection.
Further, be provided with a push rod mounting post on the positioning seat of bar portion end face straight up, push rod level through
One push rod mounting hole on push rod mounting post top, push rod mounting post top are 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, can easily installation and adjustment push rod
Front and back position.
Further, the vertical push rod installation that the grafting of push rod mounting post lower end is arranged on the positioning seat of bar portion end face
In post jack, also face push rod mounting post jack level positions spiral shell through push rod mounting post is connected with the positioning seat of bar portion end face
Bolt, push rod mounting post bolt front end and push rod mounting post, which abut, 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 in 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 bar portion end face positioning seat lower end and is slidably fit into the fixture block of dovetail groove matching in dovetail groove, bar
It is each also vertical on portion's peripheral surface support base and bar portion end face positioning seat to be provided with the realization of support base fixing bolt 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.
As optimization, engine valve stem glitch detection mechanism also includes a magnetic stand with magnetic switch function, magnetic
The fitting of power gauge stand lower end is arranged on the regulation horizontal plane of a permeability magnetic material of base upper surface, and digital dial gauge passes through installation
Support is arranged on magnetic stand.
So, can be by closing magnetic switch, mobile magnetic stand is conveniently adjusted position all around, and regulation finishes
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.
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, described in the second mounting rod front end is fixedly mounted
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 is fixed 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 stud activity of tightening knob the inner is screwed in the second mounting rod and consolidated through clamping section and screw thread
Determine in the screw on the end face of round platform the inner.
So, unclamp tightening knob can realize simultaneously to Mobile base installation 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 revolves fastening afterwards in place
Button is tightened, while is realized to fixation of the Mobile base on installation montant 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, rotatable in the 3rd mounting rod clip slot
Ground is folded with the 3rd mounting rod, is spun on the outside of the anterior corresponding 3rd mounting rod clip slot of the second mounting rod and is provided with one 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 supports
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 to 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 also extends 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 apparatus can realize the detection of engine valve stem run-out tolerance, and with simple in construction, it is easy to operate
Fast, testing result accurately and reliably the advantages that.
Brief description of the drawings
Fig. 1 is that the right side of the utility model embodiment regards structure schematic diagram.
Fig. 2 is Fig. 1 dimensional structure diagram.
Fig. 3 is the sectional view that seating portion is individually moved in Fig. 1.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
Embodiment：
As Figure 1-3, a kind of engine valve stem jitter detection apparatus, including base 1, wherein, it is provided with valve on base 1
Positioning fixture and engine valve stem glitch detection mechanism, the valve positioning fixture are used to realize engine valve stem in the horizontal direction
Supporting positioning, engine valve stem glitch detection mechanism include a digital dial gauge 2, and digital dial gauge 2 is vertically arranged and lower end
Detection is realized in engine valve stem peripheral surface contact after contact is used for and positioned.
So, valve realizes support positioning by bar portion on valve positioning fixture, and then digital dial gauge lower end is tactile
After engine valve stem peripheral surface contact after head and positioning, rotary valve can read engine valve stem bounce from digital dial gauge
Tolerance.
Wherein, the bar portion peripheral surface that the valve positioning fixture includes being arranged on along same level straight line on base supports
Seat 3 and bar portion end face positioning seat 4, it is provided with bar portion peripheral surface support base 3 upward for being carried out to bar portion peripheral surface
The bar portion peripheral surface supporting member of positioning is supported, bar portion peripheral surface supporting member is used for and bar portion peripheral surface bottom both sides
Support positioning is realized in contact, is provided with bar portion end face positioning seat 4 and is carried out spacing bar portion end face for being offseted with bar portion end face
Limit component.
So, valve positioning fixture structure is simple, and positioning is convenient and swift, is realized beneficial to detection.
Wherein, two pairs of supporting sepheres 5 that the bar portion peripheral surface supporting member is set including equivalent and horizontal pair, two
Supporting sephere 5 is arranged at intervals and each medium position and bar portion end face limit component are in same level rectilinear direction, often
Two supporting sephere opposite side first halves in supporting sephere 5 are 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 be avoided because the irregular of bar portion itself causes axial line during rotation not exist
On straight line and then increase detection error, improve detection accuracy.It can ensure stability of strutting system using two pairs of supporting sepheres.
V-arrangement locating piece can also be used to realize the support positioning of bar portion when implementing certainly, but this structure is two locating surfaces and bar portion
Contact, if bar itself circle is irregular, or locating surface itself flatness is inadequate, there is no 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 numeral
Table 2 is arranged at the position between two pairs of supporting sepheres.So material, convenient support are more saved relative to using a support base
Load, while beneficial to the position between two pairs of supporting sepheres of regulation with more convenient detection.
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 5 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 3
A flexure strip 6 is included, the one end of flexure strip 6 is fixed on bar portion peripheral surface support base, and 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 press.
So, a pressure is applied to bar portion upper surface using simple structure, can prevented in detection process, human hand band
The excessive or force that exerted a force during dynamic valve rotation is unbalanced and causes bar portion to be beated upwards, better assures 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
It is consistent to set the bar portion axis direction behind position.So, roll and rub both when reducing compressing member and bar portion contact area, while detecting
Wipe, can preferably reduce influence of the compressing member to detection.
Wherein, bar portion end face limit component is a horizontally disposed push rod 8, and the one end of push rod 8 has the top of cone
And it is top be used for and position rear rod portion end face circle home position contact it is spacing.So, by the top and round heart in bar portion end face
Contact spacing, it is ensured that spacing balance is reliable, and more importantly the position limiting structure can better ensure that bar portion rotates through
Journey axis line position is constant, avoids in rotary course because bar portion end face flatness not enough causes to change bar portion axle center line position
Influence caused by change, ensures accuracy of detection.
Wherein, a push rod mounting post 9 is provided with bar portion end face positioning seat 4 straight up, push rod 8 is horizontal through top
One push rod mounting hole on the top of bar mounting post 9, the top of push rod mounting post 9 are also connected with a push rod fixing bolt, and push rod is solid
Determine the push rod 8 in bolt front end and push rod mounting hole and abut the fixation for realizing push rod.So, can easily installation and adjustment push rod
Front and back position.
Wherein, the lower end grafting of push rod mounting post 9 is arranged on a vertical push rod mounting post on the positioning seat of bar portion end face
In jack, and face push rod mounting post jack level, which runs through, is connected with push rod mounting post bolt on the positioning seat of bar portion end face,
Push rod mounting post bolt front end and push rod mounting post 9, which abut, fixes.So, convenient regulation push rod mounting post upper-lower position,
And then push rod height and position is adjusted, ensure when need to only design production in the middle part of push rod axial line and two pairs of supporting sepheres in same perpendicular
Into plane, you can adjust the round heart contact in the bar portion end face after the top of push rod and positioning more conveniently when mounted
Positioning.
Wherein, the upper surface of base 1 is provided with dovetail groove 10, the bar portion peripheral surface support base 3 along valve orientation
Each it is vertically provided with the lower end of bar portion end face positioning seat 4 and is slidably fit into dovetail groove 10 with the fixture block of dovetail groove matching
It is interior, it is each also vertical on bar portion peripheral surface support base and bar portion end face positioning seat to be provided with support base fixing bolt through spinning
Realization 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 fitting 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 finishes
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
In being fastened on Mobile base 13 on installation 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 the second peace
Bar height and position is filled, it is conveniently realized 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, and it is perpendicular that clamping seam inner side extends to installation
Bar 12, clamp seam both sides and stretch 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 stud activity of tightening knob the inner passes through clamping section and screw thread
The second mounting rod is screwed in fix in the screw on the end face of round platform the inner.
So, unclamp tightening knob can realize simultaneously to Mobile base installation 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 revolves fastening afterwards in place
Button is tightened, while is realized to fixation of the Mobile base on installation montant and the fixation to the second mounting rod incline direction.More
Conveniently realize the adjustment control of digital dial gauge position.
The wherein front end of the second mounting rod 14 is provided with a 3rd mounting rod clip slot, in the 3rd mounting rod clip slot rotationally
The 3rd mounting rod 17 is folded with, is spun on the outside of the anterior corresponding 3rd mounting rod clip slot of the second mounting rod 14 and is provided with one 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 to 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 also extends 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.
Said apparatus is in use, the support base first unclamped on bar portion peripheral surface support base 3 and bar portion end face positioning seat 4 is consolidated
Determine bolt, move left and right the position of bar portion peripheral surface support base and bar portion end face positioning seat on dovetail groove, adjust push rod
The distance between top a pair of supporting sepheres on one bar portion peripheral surface support base of rightmost be less than valve to be detected
Bar portion length, support base fixing bolt is then fastened；Then pull-up flexure strip 6, the bar portion of valve to be detected is put into branch
Support onto 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 it
The center of circle contact positioning of top and bar portion end face circle, then puts down flexure strip so that roll sleeve and bar portion upper surface on flexure strip
Contact is realized to be positioned to the entirety of bar portion；The magnetic switch of magnetic stand 11 is then shut off, moves forward and backward regulation magnetic power meter seat
Put so that digital dial gauge lower end contact is right against center position above engine valve stem peripheral surface, then opens magnetic switch
Realize that magnetic stand positions, then the height and position of adjustment digital dial gauge up and down again so that contact pushes down engine valve stem, thousand points
Table shows reading, and it is highly constant now to fix digital dial gauge, valve is rotated by hand, according to digital dial gauge readings
Situation obtains the run-out tolerance of engine valve stem.
Claims (10)
1. a kind of engine valve stem jitter detection apparatus, including base, it is characterised in that be provided with base valve positioning fixture and
Engine valve stem glitch detection mechanism, the valve positioning fixture are used to realize the supporting positioning of engine valve stem in the horizontal direction, gas
Glitch detection mechanism of door rod portion includes a digital dial gauge, and digital dial gauge is vertically arranged and the contact of lower end is used for and positioned
Detection is realized in engine valve stem peripheral surface contact afterwards.
2. engine valve stem jitter detection apparatus as claimed in claim 1, it is characterised in that the valve positioning fixture includes edge
Same level straight line is arranged on bar portion peripheral surface support base and bar portion end face positioning seat on base, the support of bar portion peripheral surface
The bar portion peripheral surface supporting member positioned for carrying out upward support to bar portion peripheral surface is provided with seat, bar portion is circumferential
Surface support component is used for and the side contacts of bar portion peripheral surface bottom two realize support positioning, is provided with the positioning seat of bar portion end face
Spacing bar portion end face limit component is carried out for being offseted with bar portion end face.
3. engine valve stem jitter detection apparatus as claimed in claim 2, it is characterised in that the bar portion peripheral surface supports structure
Part includes two pairs of supporting sepheres that equivalent and horizontal pair is set, and two pairs of supporting sepheres are arranged at intervals and respective medium position and bar
End surface limit component is in same level rectilinear direction, and two supporting sephere opposite side first halves are used in each pair supporting sephere
Support positioning is realized in being contacted with bar portion peripheral surface.
4. engine valve stem jitter detection apparatus as claimed in claim 3, it is characterised in that two pairs of supporting sepheres are separately positioned on
On one independent bar portion peripheral surface support base, digital dial gauge is arranged at the position between two pairs of supporting sepheres.
5. engine valve stem jitter detection apparatus as claimed in claim 3, it is characterised in that any bar portion peripheral surface support base
On be additionally provided with bar portion pressure exerting arrangement, the bar portion pressure exerting arrangement includes a flexure strip, and flexure strip one end is fixed on bar portion week
To on surface support seat, the other end is provided with positioned at two compressing members above supporting sephere intermediate connection, compressing member be used for and
Bar portion upper surface pressure after positioning.
6. engine valve stem jitter detection apparatus as claimed in claim 5, it is characterised in that the compressing member is rotationally to pacify
A roll sleeve on flexure strip, the bar portion axis direction after roll sleeve axis direction positions with installation are consistent.
7. engine valve stem jitter detection apparatus as claimed in claim 2, it is characterised in that bar portion end face limit component is one
Horizontally disposed push rod, push rod one end have the top and top end face circle home position for being used for and positioning rear rod portion of cone
Contact spacing.
8. engine valve stem jitter detection apparatus as claimed in claim 2, it is characterised in that base upper surface is along valve positioning side
To being provided with dovetail groove, the bar portion peripheral surface support base and bar portion end face positioning seat lower end is each vertically provided with and dovetail
The fixture block of groove matching is slidably fit into dovetail groove, on bar portion peripheral surface support base and bar portion end face positioning seat each also
It is vertical to be locked through spinning to be provided with support base fixing bolt and realize.
9. engine valve stem jitter detection apparatus as claimed in claim 1, it is characterised in that engine valve stem glitch detection mechanism is also
Including a magnetic stand with magnetic switch function, magnetic stand lower end is bonded a magnetic conduction for being arranged on base upper surface
On the regulation horizontal plane of material, digital dial gauge is arranged on magnetic stand by mounting bracket.
10. engine valve stem jitter detection apparatus as claimed in claim 9, it is characterised in that the mounting bracket includes one
The vertical installation montant being fixed on magnetic stand, install and be folded with a Mobile base, Mobile base vertically movablely on montant
Side is provided with a tightening knob, and tightening knob is used to Mobile base being fastened on installation montant, and Mobile base opposite side is set
There is the second mounting rod, the digital dial gauge is fixedly mounted in the second mounting rod front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720564700.2U CN206695714U (en) | 2017-05-20 | 2017-05-20 | A kind of engine valve stem jitter detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720564700.2U CN206695714U (en) | 2017-05-20 | 2017-05-20 | A kind of engine valve stem jitter detection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206695714U true CN206695714U (en) | 2017-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720564700.2U Expired - Fee Related CN206695714U (en) | 2017-05-20 | 2017-05-20 | A kind of engine valve stem jitter detection apparatus |
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| CN (1) | CN206695714U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044231A (en) * | 2019-06-03 | 2019-07-23 | 湖南安福气门有限公司 | A kind of valve-face jack value measuring device |
| CN110345311A (en) * | 2019-07-01 | 2019-10-18 | 中冶宝钢技术服务有限公司 | A kind of oil pipe fixing device |
| CN114909985A (en) * | 2022-05-24 | 2022-08-16 | 西安航空学院 | Key groove symmetry tolerance detection teaching aid and detection device |
-
2017
- 2017-05-20 CN CN201720564700.2U patent/CN206695714U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044231A (en) * | 2019-06-03 | 2019-07-23 | 湖南安福气门有限公司 | A kind of valve-face jack value measuring device |
| CN110345311A (en) * | 2019-07-01 | 2019-10-18 | 中冶宝钢技术服务有限公司 | A kind of oil pipe fixing device |
| CN114909985A (en) * | 2022-05-24 | 2022-08-16 | 西安航空学院 | Key groove symmetry tolerance detection teaching aid and detection device |
| CN114909985B (en) * | 2022-05-24 | 2023-09-12 | 西安航空学院 | Key groove symmetry tolerance detection teaching aid and detection device |
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