CN107504931A - Measurement apparatus - Google Patents
Measurement apparatus Download PDFInfo
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- CN107504931A CN107504931A CN201710897574.7A CN201710897574A CN107504931A CN 107504931 A CN107504931 A CN 107504931A CN 201710897574 A CN201710897574 A CN 201710897574A CN 107504931 A CN107504931 A CN 107504931A
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- Prior art keywords
- claw
- locating detent
- measurement apparatus
- central shaft
- rocker piece
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The application provides a kind of measurement apparatus, and the measurement apparatus includes：Clamping device (200), the clamping device are used at least one basic part involved by parameter to be detected releasedly is held on into measurement position；Measuring mechanism (300), the measuring mechanism is independently of the clamping device and the basic part for being pointed to the measurement position measures the parameter to be detected.In the technical scheme of the application, clamping device and measuring mechanism are separate, therefore will not be influenceed by non-essential bearing load when measuring mechanism measures, so as to obtain higher precision.
Description
Technical field
The application is related to mechanical measurement field, more particularly to a kind of to be used to measure the geometric parameter of component of machine
Measurement apparatus.
Background technology
It is well known that for high-accuracy electronic product, the size after completing to machine to part is not only needed
Precision is detected, it is also desirable to is detected to completing the dimensional accuracy after assembling, is expected with ensuring that the product after turning to match somebody with somebody has
Matching relationship.
For example, as shown in figure 1, in the assembling process of engine, after assembled shaft 10 is assembled in housing 11, assemble
Axle 10 has displacement play in the axial direction.When to detecting the distance between circumferential grooves and housing end face in assembled shaft 10 L
Detected when being detected, it is necessary to simulate assembled shaft 10 in the state of load is born, that is to say, that, it is necessary to by assembled shaft 10
Detected again after raising up completely.
Traditionally, when running into such operating mode, generally first assembled shaft 10 is lifted in place with the detection part of measurement apparatus,
Then detection measurement is carried out with detection part again.But the defects of this metering system is, because detection part carries dress
Gravity with axle 10, therefore the precise degrees of measurement result can be influenceed.
In view of this, it is desirable to provide a kind of measurement apparatus having compared with high accurancy and precision.
The content of the invention
In view of this, the application is directed to a kind of measurement apparatus having compared with high accurancy and precision.
To reach above-mentioned purpose, what the technical scheme of the application was realized in：
Present applicant proposes a kind of measurement apparatus, the measurement apparatus includes：Clamping device, the clamping device are used for releasable
At least one basic part involved by parameter to be detected is held on measurement position by ground；And measuring mechanism, the measuring mechanism are independent
The parameter to be detected is measured in the clamping device and the basic part for being pointed to the measurement position.
Preferably, the clamping device is the hoisting mechanism for including multiple claws, and the hoisting mechanism has vertical direction
The free degree, the hoisting mechanism have the clip position positioned at the off-position of lower and positioned at highest point and can released described
Put and moved back and forth between position and clip position, in the off-position, the multiple claw discharges the basic part, described
Clip position, the multiple claw keep the basic part in the measurement position.
Preferably, the measurement apparatus includes central shaft, one end of the central shaft be used for coaxially apical grafting as the base
The assembled shaft of plinth part；The hoisting mechanism includes：Connecting portion, the connecting portion can be connected to vertical sliding the central shaft；With
Horizontal part, the horizontal part extend radially outward and horizontally slidable are connected with the multiple claw.
Preferably, bias piece is provided between the horizontal part and each claw, each bias piece is applied to corresponding claw
Add radially inner biasing force, so that each claw is outer with the central shaft when the axial direction along the central shaft moves
Side face keeps contact.
Preferably, set fluted on the outer peripheral face of the central shaft, the groove includes the diminishing cone of radial dimension
Shape section and the cylindrical section being connected in lower section with the conical section；Each claw is provided with the projection protruded towards the central shaft
Portion, the jut are always to maintain with the outer peripheral face of the central shaft in the presence of the bias piece and contacted, the projection clan
When entering the groove, the claw is tightened up；The end of each claw is provided with the claw protruded towards the central shaft, should
Claw and the jut synchronization action.
Preferably, axial limiting mechanism is provided with the central shaft, for limiting the connecting portion relative in described
The axial movement of mandrel.
Preferably, the multiple claw, which surrounds, is arranged circumferentially and with the free degree in the horizontal direction, the claw
For 3-6.
Preferably, the measuring mechanism includes：Frame, the frame are fixedly installed in the central shaft；Sensing device further, the sense
Survey device be installed on the frame and including：Locating detent, the locating detent are connected with resiliency deformable member, and the locating detent has initial bit
Put and the test position for being measured to the basic part in the measurement position；Link gear, the link gear and institute
Locating detent is stated to connect in linkage；And sensor, the sensor are used for the action and/or displacement for detecting the link gear.
Preferably, the link gear includes：Fixed support, the fixed support extend downwardly from the frame；Vertical block,
The vertical block is adjacent to interval setting and mutual elastic connection with the fixed support；Upper rocker piece, rocker piece is flatly on this
It is fixedly connected on the fixed support and is slidably connected to the vertical block；With lower rocker piece, the lower rocker piece is flatly
It is fixedly connected on vertical block and is slidably connected to the fixed support, elasticity connects between the upper rocker piece and lower rocker piece
Connect, the locating detent is set with the lower rocker piece linkage, and the sensor is installed on the fixed support and for detecting institute
State the action and/or displacement of vertical block.
Preferably, the locating detent is installed on the vertical block and extended downwardly, and the upper rocker piece is hinged with connecting rod, should
Connecting rod stretches into the hook portion extended from the locating detent and is connected to the fixed support by extension spring, to pass through the hook portion pair
The locating detent applies radially outer biasing force, stage clip is provided between the locating detent and the vertical block, with to described
Locating detent applies radially inner biasing force, the end of the connecting rod by roller conflicting in the upper surface of the lower rocker piece,
The upper surface of the rocker piece is designed with the slope coordinated with the roller.
Preferably, the direction of the slope radially inward is gradually reduced.
Preferably, the link gear also includes being installed on the support bracket fastened driver, and the driver is used to release
Radially inner driving force is applied to the connecting rod with putting.
Preferably, the sensing device further has multiple locating detents, and the plurality of locating detent is evenly arranged around the central shaft
And be staggered with the multiple claw, the assembled shaft is kept in the state of the measurement position in the multiple claw,
The locating detent can contact at the central shaft.
Preferably, circumferential grooves are provided with the assembled shaft, in the measurement position, the circumferential grooves of the assembled shaft
Upper surface supported by the multiple claw, the multiple locating detent can contact with the upper surface of the circumferential grooves.
Different from traditional technical scheme, in the technical scheme of the application, clamping device and measuring mechanism are separate,
Therefore will not be influenceed when measuring mechanism measures by non-essential bearing load, so as to obtain higher precision.
Other features and advantage will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
The accompanying drawing for forming the part of the application is used for providing further understanding of the present application, the schematic reality of the application
Apply mode and its illustrate to be used to explain the application, do not form the improper restriction to the application.In the accompanying drawings：
Fig. 1 is the Test Cycle schematic diagram described in the application embodiment；
Fig. 2 is the schematic diagram of the measurement apparatus described in the application embodiment；
Fig. 3 and Fig. 4 is respectively the partial enlarged drawing of the measurement apparatus shown in Fig. 2.
Embodiment
Below with reference to the accompanying drawings the embodiment of the application is described in detail.
According to the application, there is provided a kind of measurement apparatus, the measurement apparatus include：Clamping device, the clamping device are used for
At least one basic part involved by parameter to be detected is releasedly held on measurement position；And measuring mechanism, the measuring machine
Structure is independently of the clamping device and the basic part for being pointed to the measurement position measures the parameter to be detected.
Clamping device is used to basic part being held in measurement position, to be surveyed by the basic part to parameter to be detected
Amount.After being measured, clamping device discharges basic part, it is returned to initial position.The parameter to be detected can be
The parameters such as distance, displacement, length, thus basic part usually require to determine with other elements or the relativeness of part it is to be detected
Parameter.Clamping device can have diversified forms, such as fixture with certain free degree etc..
Unlike traditional measurement apparatus, in the technical scheme of the application, measuring mechanism is mutual with clamping device
It is independent.In other words, the effect of clamp structure is that basic part is held in into measurement position, then is detected by measuring mechanism, and
Measuring mechanism is not needed to apply larger active force to basic part.According to the technical scheme of the application, because measuring mechanism is absorbed in
In measurement, and without carrying larger load, therefore compared with traditional technical scheme, there is higher measurement precision.
Measuring mechanism can be the various mechanisms that can be used in detecting above-mentioned parameter to be detected, such as according to different operating modes
Occasion, can be hand-held measuring mechanism or the automatically or semi-automatically measuring mechanism using sensor.
Lifting completely in the operating mode shown in Fig. 1, needing to detect the circumferential grooves in assembled shaft 10 as described above
The distance between with the end face of housing 20 under state, specific is, for example, between the upper surface of circumferential grooves and the end face of housing 20
Distance.
In the preferred case, as shown in Fig. 2 clamping device 200 is the hoisting mechanism for including multiple claws 201, the lifting
Mechanism has the free degree of vertical direction, and the hoisting mechanism has positioned at the off-position of lower and the clamping positioned at highest point
Position can simultaneously be moved back and forth between the off-position and clip position, and in the off-position, the multiple claw is released
The basic part is put, in the clip position, the multiple claw keeps the basic part in the measurement position.
It is that simulation assembled shaft 10 is finally being produced that hoisting mechanism, which has the purpose of free degree of vertical direction, the setting of vertical direction,
Actual setting orientation in product.Hoisting mechanism has the free degree of vertical direction, therefore is clamped at relatively low off-position
Assembled shaft 10, the clip position for lifting highest point after specially assembled shaft 10 is clamped using multiple claws 201 again are (so-called
Highest point refers to highest point of the hoisting mechanism in vertical direction stroke) so that based on part assembled shaft be in measurement position
Put, to be detected by measuring mechanism intervention.After measuring mechanism completes measurement, hoisting mechanism holds assembled shaft 10 again from clamping
Position is moved down into off-position, so as to discharge assembled shaft 10.
Above is operating mode with reference to shown in Fig. 1 and the hoisting mechanism as clamping device is described, but the application is not limited to
This.Clamping device can also have other frees degree, such as the free degree of the free degree of horizontal direction, or direction of rotation.Except
Outside assembled shaft 10, basic part can also be other kinds of part, such as end face of housing etc..
The embodiment of the application is described in detail with reference to Fig. 2.
As shown in Fig. 2 central shaft 100 is included according to the measurement apparatus of the application preferred embodiment, the central shaft 100
One end is used for coaxially assembled shaft 10 of the apical grafting as the basic part.The central shaft 100 is used as hoisting mechanism and measuring mechanism
Installation foundation.When hoisting mechanism lifts assembled shaft 10 in place, central shaft 100 and assembled shaft 10 coaxially apical grafting, realize
Reliable positioning.
Hoisting mechanism
As shown in Fig. 2 the hoisting mechanism includes：Connecting portion 202 and horizontal part 203, the connecting portion 202 can vertical sliding
Ground is connected to the central shaft 100, and the horizontal part 203 extends radially outward and horizontally slidable is connected with the multiple card
Pawl 201.
Connecting portion 202 can be slidably disposed in central shaft 100 by rail structure.The slip of connecting portion 202 can be with
Realized by the mode such as hydraulic pressure, pneumatic.In order to limit the sliding stroke of connecting portion 202, position limiting structure can be provided with, is such as schemed
Shown in 2.The structure of connecting portion simultaneously has no special requirements, but needs to meet to slide the requirement set.Under preferable case, connecting portion 202
It is formed about the sleeve-shaped of central shaft 100.
Axial direction of the connecting portion 202 along central shaft 100 is extended downwardly, and horizontal part 203 is connected with bottom.Horizontal part
203 overall bearing of trends are horizontal-extending, but may also comprise the local structure for having Longitudinal extending.Horizontal part 203 is connected with more
Individual claw 201, the plurality of claw 201 is set horizontally slidablely on horizontal part 203, so as to relative to central shaft 100
Close to or away from.When multiple claws are close to central shaft 100, clipping operation can be carried out to assembled shaft 10 using claw, when
Assembled shaft can be discharged when multiple claws are away from assembled shaft 10.
Slip movement of the claw 201 on horizontal part 203 can be realized in several ways.For example, liquid can be utilized
The mode such as driving, pneumatic, motor driving is pressed to realize.
Under preferable case, as shown in Fig. 2 being provided with bias piece 204 between the horizontal part 203 and each claw 201, often
Individual bias piece 204 applies radially inner biasing force to corresponding claw 201, so that each claw 201 is along the central shaft
Keep contacting with the outer peripheral face of the central shaft 100 during 100 axial direction movement.Bias piece 204 can be spring, the spring
It is pressed between horizontal part 203 and claw 201.Bias piece 204 can also be flexible miscellaneous part, such as rubber parts.
Due to the biasing force of bias piece 204, when each claw 201 is in axial direction moving on central shaft 100 all the time
It is contacted with the outer peripheral face of central shaft 100.In such a case it is possible to claw 201 is controlled in footpath using the external force for overcoming biasing force
Movement to direction.
In the preferred case, the exterior contour of central shaft 100 can be utilized to realize moving radially for claw 201.Such as Fig. 2 institutes
Show, circumferential groove 101 is provided with the outer peripheral face of the central shaft 100, it is diminishing that the groove 101 includes radial dimension
Conical section and the cylindrical section being connected in lower section with the conical section；Each claw 201 is provided with prominent towards the central shaft 100
The jut 205 gone out, outer peripheral face of the jut 205 with the central shaft 100 in the presence of the bias piece 204 are always protected
Contact is held, when the jut 205 falls into the groove 101, the claw 201 is tightened up；The end of each claw 201 is set
It is equipped with the claw 206 protruded towards the central shaft 100, the claw 206 and the synchronization action of jut 205.
Based on the structure, due to claw 206 and the synchronization action of jut 205, when jut 205 not yet falls into groove 101
When, claw 206 relative to the central axis of central shaft 100 distance relatively far away from.When jut 205 gradually falls into groove 101
When, claw 206 is relative to the central axis of central shaft 100 apart from relative close.Specifically, when jut 205 is positioned at recessed
During 101 top of groove, claw 201 is not tightened up；When jut 205 falls into the conical section of groove 101, claw 201 is gradually tightened up；When
When jut 205 reaches the cylindrical end of groove 101, claw 201 is tightened up completely.In brief, it is used as the machine of following an example by the use of groove 101
Structure, tightening up and discharging for the claw 206 of claw 201 is controlled in the presence of family 204 is biased.
The profile of groove 101 can be not limited to the combination of above-mentioned conical section and cylindrical section, can also only have conical section or circle
Shell of column.
As described above, axial limiting mechanism is provided with the central shaft 100, it is relative for limiting the connecting portion 202
In the axial movement of the central shaft 100.As shown in Fig. 2 the axial limiting mechanism is the portion protruded towards the horizontal part 203
Part, but the application not limited to this, or other buckles, neck etc. can play spacing structure.
Under preferable case, the multiple claw 201 is simultaneously (as described above) with the horizontal direction around being arranged circumferentially
The free degree, the claw is 3-6.
Measuring mechanism
After assembled shaft 10 is lifted into measurement position using hoisting mechanism, independently of hoisting mechanism measuring mechanism to make
Based on the feature of assembled shaft 10 of part extracted and detected.Because measuring mechanism is substantially not subject to the gravity of assembled shaft 10
Load, therefore will not be adversely affected by the gravitational load, so as to obtain the measurement result of higher precision.
As shown in Fig. 2 measuring mechanism 300 includes：
Frame 301, the frame 301 are fixedly installed in the central shaft 100；
Sensing device further, the sensing device further be installed on the frame and including：
Locating detent 302, the locating detent 302 are connected with resiliency deformable member, the locating detent 302 have initial position and for pair
The test position that basic part in the measurement position measures；
Link gear, the link gear are connected in linkage with the locating detent 302；With
Sensor 303, the sensor are used for the action and/or displacement for detecting the link gear.
Frame 301 is fixed on central shaft 100, and provides installation foundation for the sensing device further of measuring mechanism.Sensing device further is made
For the core apparatus of measuring mechanism 300, function is measured for realizing.
The locating detent 302 of sensing device further is connected with resiliency deformable member's (indentation, there as depicted), when locating detent 302 is from first
Beginning position to the basic part in measurement position carry out detection measurement when, locating detent is produced corresponding by resiliency deformable member
Elastic deformation or small displacement (usually swinging).Then, the link gear being connected with locating detent 302 can reflect or
The change of locating detent is embodied, so as to detect the action and/or displacement of link gear using sensor 303, and then is measured
Data.
Under normal circumstances, link gear has enlarging function, and the information such as the sensing of locating detent 302 or change in displacement are put
Greatly, to be advantageous to the detection of sensor 303, and be advantageous to improve accuracy of detection.
Link gear can have multiple structural forms, such as can be wedge mechanism or linkage.In preferable case
Under, as shown in Fig. 2 the link gear includes：
Fixed support 304, the fixed support 304 extend downwardly from the frame 301 and (can also be formed and be integrated)；
Vertical block 305, the vertical block 305 are adjacent to interval setting and mutual elastic connection with the fixed support 304；
Upper rocker piece 306, rocker piece 306 is flatly fixedly connected on the fixed support 304 and slideably connected on this
It is connected to the vertical block 305；With
Lower rocker piece 307, the lower rocker piece 307 are flatly fixedly connected on vertical block 305 and are slidably connected to institute
State fixed support 304, elastic connection between the upper rocker piece 306 and lower rocker piece 307,
The locating detent is set with the lower linkage of rocker piece 307, and the sensor is installed on the fixed support and is used in combination
In the action and/or displacement that detect the vertical block 305.
The linkage of locating detent 302 and lower rocker piece 307 is set, when locating detent 302 has acted or during displacement, lower rocker piece
307 have also correspondingly acted or displacement.And for lower rocker piece 307, upper rocker piece 306, fixed support 304 and vertical block
For 305, because component elasticity relative to each other connects, and upper rocker piece and lower rocker piece keep being parallel to each other, therefore structure
Into parallel-crank mechanism.The action of locating detent 302 causes the action of lower rocker piece 307, and then causes the dynamic of vertical block 305
Make.Thus, the action and/or displacement of vertical block 305 are detected using sensor, the displacement of locating detent 302 can be obtained indirectly
Information.
The linkage of locating detent and lower rocker piece 307 sets and can realized in several ways.Such as connected by connecting rod
Deng.Under preferable case, as shown in Fig. 2 the locating detent 302 is installed on the vertical block 305 and extended downwardly, the upper floating
Block 306 is hinged with connecting rod 308, and the connecting rod 308 stretches into the hook portion 309 extended from the locating detent 302 and connected by extension spring 310
The fixed support 304 is connected to, it is described to apply radially outer biasing force to the locating detent 302 by the hook portion 309
Stage clip 311 is provided between locating detent 302 and the vertical block 305, to apply radially inner bias to the locating detent 302
Power, the end of the connecting rod 308 contact at the upper surface of the lower rocker piece 306 by roller 312, the rocker piece 306 it is upper
Surface is designed with the slope coordinated with the roller 312.
Locating detent 302 is installed on vertical block 305, with closer central shaft 100.Locating detent 302 is also mountable to frame
301。
Upper rocker piece 306 is hinged with connecting rod 308, connecting rod 308 extend downwardly through hook portion 309 and with locating detent 302
Association, extension spring 310 apply radially outer biasing force by connecting rod 308 and hook portion 309 to locating detent 302.It can utilize and draw
The pulling force of spring 310 so that locating detent 302 is in the initial position opened.Stage clip 311 primarily serves the effect of damping vibration, together
When due to stage clip 311 biasing force presence, make connecting rod 308 all the time with hook portion 309 keep contact.
The end of connecting rod 308 is provided with roller 312, the roller 312 contacts at the upper surface of the lower rocker piece 306,
The upper surface of the rocker piece 306 is designed with the slope coordinated with the roller 312.Therefore, when the roller 312 of connecting rod 308 is floating
When being rolled on the upper surface of motion block 306, due to upper rocker piece and the equal keep level orientation of lower rocker piece, therefore upper rocker piece is with
Rocker piece can produce the displacement or action of vertical direction, and then vertical block 305 is produced corresponding action or displacement.
As shown in Fig. 2 the link gear also includes the driver 313 for being installed on the fixed support 304, the driver
For releasedly applying radially inner driving force to the connecting rod 308.Meanwhile the direction of the slope radially inward by
Gradually decline.Driver 313 can be the drivers such as hydraulic cylinder, cylinder.When driver 313 applies inside driving to connecting rod 308
During power, roller is moved to the left in the orientation shown in Fig. 2, and then moves lower rocker piece by slope.
Under preferable case, by the displacement of resiliency deformable member during in order to control locating detent 302 to measure, prevent from positioning
The displacement of pawl 302 exceedes the scope that resiliency deformable member can bear, as shown in figure 3, setting limited location on locating detent 302
Part.
, can be by the zone of reasonableness of the Bit andits control of locating detent 302, so as to prevent elasticity by the setting of the locating part
The fatigue of deformable member, and then detection means can be made to be among good working order, maintain higher measurement precision.
As described above, locating detent 302 has initial position and measurement position.Become central member and extension spring 310 and pressure in elasticity
In the presence of spring 311, locating detent 302 can be in initial position.
As shown in Figure 3, it is preferable that described in order to limit locating detent 302 in radially outer maximum displacement or extreme position
Locating part may include the first locating part 321.First locating part 321 is fixedly installed on vertical block, but not through locating detent
302, but protrude and design from vertical block towards locating detent.Therefore, when locating detent 302 is moved radially outward, when touching
As soon as during the end of locating part 321, reach radially outer extreme position.
Under preferable case, the first locating part 321 is threadingly attached to vertical block.But the application is not limited to this, first
Locating part 321 can also be fixedly connected with or be integrally formed at vertical block.
Preferably, as described in Figure 3, the second locating part 322 is provided with vertical block, second locating part 322 passes through
The locating detent 302 and the maximum displacement for limiting the locating detent 302 radially-inwardly (the left-hand direction in Fig. 2 and Fig. 3).
Locating detent 302 is run through by the second locating part 322, while gap is provided therebetween, to allow locating detent 302
Displacement or movement.But the second locating part 322 provides radially inner extreme position to locating detent 302, in other words, works as positioning
When pawl 302 is moved radially inward to the second 322 competing position of locating part, then locating detent 302 reaches radially inner
Maximum displacement and extreme position, it is impossible to be further continued for deformation or displacement.
Second locating part 322 can be arranged on vertical block in several ways, such as can be fixedly connected or a bodily form
Into.But preferably, the second locating part 322 is connected by screw thread with vertical block, therefore can be to the radially inner of locating detent 302
Extreme position is controllably adjusted, to be adapted to different operating modes.The restriction effect of second locating part and locating detent 302 can be with
Realized by the ledge structure in through hole or latch structure.
Utilize the above-mentioned locating part including the first locating part 321 and/or the second locating part 322, it can be ensured that at locating detent
Within rational deformation, displacement range.
Under preferable case, locating detent have it is multiple, the plurality of locating detent be evenly arranged around the central shaft 100 and with it is described
Multiple claws are staggered, and the assembled shaft 10 is kept in the state of the measurement position in the multiple claw, described fixed
Position pawl can contact at the assembled shaft 10.That is, when claw keeps assembled shaft 10 to be in measurement position, locating detent energy
The precalculated position of the assembled shaft 10 of part based on enough contacting at.Specifically, circumferential grooves are provided with the assembled shaft 10,
In the measurement position, the upper surface of the circumferential grooves of the assembled shaft 10 is supported by the multiple claw, the multiple positioning
Pawl can contact with the upper surface of the circumferential grooves.
As shown in figure 4, in the lower end of fixed support 304, measuring basis block 331 is provided with.The work of the measuring basis block 331
With the position for being to determine benchmark zero-bit, so as to obtain measurement result by the relative position relation between locating detent 302, because
The position of this measuring basis block 331 is extremely important.Moreover, the position of measuring basis block 331 can determine the position of locating detent 302
Put.
When a measurement is taken, the end of locating detent 302 is preferred contradicts on the upper surface of the circumferential grooves, therebetween
Active force or elastic deformation amount it is unsuitable excessive or too small, but within the scope of suitable, can obtain high-precision
Measurement result.In the case of it is therefore preferable that, the installation between measuring basis block 331 and fixed support 304 has adaptivity or can
Modulability.In other words, measuring basis block 331 can be adjustably mounted to fixed support 304.
Under preferable case, measuring basis block 311 and the elastic connection, such as pass through flexure strip 332 each other of fixed support 304.
Due to elastic connection, the rigid contact of measuring basis block 311 can be avoided, is advantageous to keep the data stability of measurement result.
It is further preferred that being provided with multiple mounting holes on flexure strip 332, measuring basis block 331 can be made by not
With mounting hole and be installed on fixed support 304, can further adjust measuring basis block 311 relative to fixed support 304
Position.
It is further preferred that the fixed support 304 is not integral structure, but assembly.In such a case it is possible to
In fixed support 304, adjusting gasket 333 is set.Therefore, by adjusting the thickness of adjusting pad, realize measuring basis block 331 and survey
Measure the position adjustments of unit.
Measurement process
Behind upper surface using the circumferential grooves of multiple claw clamping assembled shafts of hoisting mechanism, lifting assembled shaft 10 is to most
High position (i.e. measurement position).
After the completion of deduction action, that is, meet the technological requirement that workpiece makes up fit-up gap.After workpiece is stable, in next step
Action is measured using measuring mechanism.
In the presence of extension spring, locating detent is open configuration in initial position.Then, start driver 313, such as make
The piston rod for obtaining cylinder stretches out, and will contact and pushes up connecting rod 308.With the increase of cylinder stroke, connecting rod 308 drives roller to turn left
Motion, at the same locating detent in the presence of stage clip 311 all the time by pressure to the left.When roller 312 moves to left, then hook portion 309 is being pressed
To left movement, locating detent starts to receive and support in locating detent along one angle of clockwise oscillation in elastomer opening position the power of spring
Touch in the upper surface of the circumferential grooves of assembled shaft 10.
Meanwhile the state of tension is between lower rocker piece below roller and upper rocker piece all the time, as described above, floating downward
Parallel-crank mechanism is formed between motion block, upper rocker piece and vertical block and fixed support.Therefore, when roller is along lower floating
When the upper surface of block is moved to the left, due to there is ramp structure on lower rocker piece, therefore between upper rocker piece and lower rocker piece
In the presence of extension spring, lower rocker piece moves up.Simultaneously as lower rocker piece is fixedly connected with vertical block, so result in perpendicular
To correspondingly upper action or displacement, action or displacement caused by the vertical block can be examined straight block by sensor 303 installed above
Survey and obtain, and obtain corresponding numerical value, the numerical value can obtain required measured value by computing.
Pass through detection of the measuring basis block 311 to the end face of housing in addition, combining, the circumference of above-mentioned assembled shaft can be obtained
The distance between upper surface and housing end face of groove.
The better embodiment of the application is the foregoing is only, it is all the application's not to limit the application
Within spirit and principle, any modification for being made, combination, equivalent substitution, improvement etc., the protection domain of the application should be included in
Within.
Claims (14)
1. measurement apparatus, it is characterised in that the measurement apparatus includes：
Clamping device (200), the clamping device are used to releasedly press from both sides at least one basic part involved by parameter to be detected
It is held in measurement position；
Measuring mechanism (300), the measuring mechanism is independently of the clamping device and is used for the basis for being pointed to the measurement position
Part measures the parameter to be detected.
2. measurement apparatus according to claim 1, it is characterised in that the clamping device (200) is to include multiple claws
(201) hoisting mechanism, the hoisting mechanism have the free degree of vertical direction, and the hoisting mechanism has the release positioned at lower
Position and clip position positioned at highest point can simultaneously move back and forth between the off-position and clip position, be released described
Put position, the multiple claw discharges the basic part, in the clip position, the multiple claw keep the basic part in
The measurement position.
3. measurement apparatus according to claim 2, it is characterised in that the measurement apparatus includes central shaft (100), in this
One end of mandrel (100) is used for coaxially assembled shaft (10) of the apical grafting as the basic part；
The hoisting mechanism includes：
Connecting portion (202), the connecting portion (202) can be connected to vertical sliding the central shaft (100)；With
Horizontal part (203), the horizontal part extend radially outward and horizontally slidable are connected with the multiple claw (201).
4. measurement apparatus according to claim 3, it is characterised in that the horizontal part (203) and each claw (201) it
Between be provided with bias piece (204), each bias piece (204) applies radially inner biasing force to corresponding claw (201) so that
Each claw (201) is kept when being moved along the axial direction of the central shaft (100) with the outer peripheral face of the central shaft (100)
Contact.
5. measurement apparatus according to claim 4, it is characterised in that be provided with the outer peripheral face of the central shaft (100)
Groove (101), the groove (101) include the diminishing conical section of radial dimension and the cylinder being connected in lower section with the conical section
Section；
Each claw (201) is provided with towards the prominent jut (205) of the central shaft (100), the jut (205)
Always it is to maintain and contacts with the outer peripheral face of the central shaft (100) in the presence of the bias piece (204), the jut
(205) when falling into the groove (101), the claw (201) is tightened up；
The end of each claw (201) is provided with towards the prominent claw (206) of the central shaft (100), the claw
(206) with the jut (205) synchronization action.
6. measurement apparatus according to claim 3, it is characterised in that be provided with axial limiting on the central shaft (100)
Mechanism, for limiting axial movement of the connecting portion (202) relative to the central shaft (100).
7. measurement apparatus according to claim 3, it is characterised in that the multiple claw (201) is around circumferential uniform cloth
Put and there is the free degree in the horizontal direction, the claw is 3-6.
8. according to the measurement apparatus described in any one in claim 3-7, it is characterised in that measuring mechanism (300) bag
Include：
Frame (301), the frame (301) are fixedly installed in the central shaft (100)；
Sensing device further, the sensing device further be installed on the frame and including：
Locating detent (302), the locating detent (302) are connected with resiliency deformable member, and the locating detent (302) has initial position and is used for
The test position measured to the basic part in the measurement position；
Link gear, the link gear are connected in linkage with the locating detent (302)；With
Sensor (303), the sensor are used for the action and/or displacement for detecting the link gear.
9. measurement apparatus according to claim 8, it is characterised in that the link gear includes：
Fixed support (304), the fixed support (304) extend downwardly from the frame (301)；
Vertical block (305), the vertical block (305) are adjacent to interval setting and mutual elastic connection with the fixed support (304)；
Upper rocker piece (306), rocker piece (306) is flatly fixedly connected on the fixed support (304) and slideably on this
It is connected to the vertical block (305)；With
Lower rocker piece (307), the lower rocker piece (307) are flatly fixedly connected on vertical block (305) and are slidably connected to
The fixed support (304), elastic connection between the upper rocker piece (306) and lower rocker piece (307),
The locating detent is set with lower rocker piece (307) linkage, and the sensor is installed on the fixed support and is used for
Detect the action and/or displacement of the vertical block (305).
10. measurement apparatus according to claim 9, it is characterised in that
The locating detent (302) is installed on the vertical block (305) and extended downwardly, upper rocker piece (306) company of being hinged with
Bar (308), the connecting rod (308) stretch into the hook portion (309) extended from the locating detent (302) and connected by extension spring (310)
In the fixed support (304), to apply radially outer biasing force to the locating detent (302) by the hook portion (309),
Stage clip (311) is provided between the locating detent (302) and the vertical block (305), to apply footpath to the locating detent (302)
To inside biasing force,
The end of the connecting rod (308) contacts at the upper surface of the lower rocker piece (306), the rocker piece by roller (312)
(306) upper surface is designed with the slope coordinated with the roller (312).
11. measurement apparatus according to claim 10, it is characterised in that under the direction of the slope radially inward is gradual
Drop.
12. measurement apparatus according to claim 10, it is characterised in that the link gear is also described solid including being installed on
The driver (313) of fixed rack (304), the driver are used to releasedly apply radially inner drive to the connecting rod (308)
Power.
13. measurement apparatus according to claim 8, it is characterised in that the sensing device further has multiple locating detents, and this is more
Individual locating detent is evenly arranged around the central shaft (100) and is staggered with the multiple claw, is protected in the multiple claw
The assembled shaft (10) is held in the state of the measurement position, the locating detent can contact at the central shaft (100).
14. measurement apparatus according to claim 13, it is characterised in that be provided with circumferential groove on the assembled shaft (10)
Groove, in the measurement position, the upper surface of the circumferential grooves of the assembled shaft (10) is supported by the multiple claw, the multiple
Locating detent can contact with the upper surface of the circumferential grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710897574.7A CN107504931B (en) | 2017-09-28 | 2017-09-28 | Measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710897574.7A CN107504931B (en) | 2017-09-28 | 2017-09-28 | Measuring device |
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| CN107504931B CN107504931B (en) | 2023-09-29 |
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| CN201710897574.7A Active CN107504931B (en) | 2017-09-28 | 2017-09-28 | Measuring device |
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Cited By (2)
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|---|---|---|---|---|
| CN110044314A (en) * | 2019-03-27 | 2019-07-23 | 南京泰普森自动化设备有限公司 | Flexible floating straight pillar matching cylinder cap measuring device and cylinder cap automatic assembly line |
| CN110132336A (en) * | 2019-04-24 | 2019-08-16 | 南京泰普森自动化设备有限公司 | Measuring piece mounting structure and measuring device |
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Also Published As
| Publication number | Publication date |
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| CN107504931B (en) | 2023-09-29 |
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