Specific purpose tool for the detection of vehicle body glass face difference
Technical field
The present invention relates to a kind of detection instruments in product type face.
Background technique
In automobile manufacturing field, to guarantee product quality, need to detect the body of a motor car glass surface face difference of production,
It is divided in the prior art according to measurement method are as follows: contact type measurement, non-contact measurement etc..There is operations for these measurement methods
The problem of complicated, data need a large amount of processing, measurement accuracy low etc..
Contact type measurement is manually directly to measure vehicle body glass face multiple spot thickness using measuring tool, and then calculating face is poor,
This measurement method be easy to cause surface mobile or deformation during detection, or even damage measured surface.In its accuracy
In terms of with repeatability, the angle or the depth of parallelism that tool uses all can accuracy to data and repeatability produce serious influence.
Each tool can be limited by its classification, size, shape.
Non-contact measurement is neither easy the surface of damage body of a motor car glass, power will not occur because measuring tool contacts
Effect and cause large error.The most commonly used is inductance type measurements and laser measurement, but inductance type measurement tool is not able to satisfy certain
Detection demand under a little occasions, especially to the vehicle body glass with arcwall face, fixation of two electrodes in vehicle body glass two sides
It is not easy, gauge head is highly prone to interfere, and when practical operation causes detection accuracy not high.Laser measurement tools to the limitation of measurement compared with
Low, intra pair gaps measurement capability is weak.
In consideration of it, how quickly to design detection mode simpler with structure, quick have become it is urgently to be resolved
Technical problem.
Summary of the invention
The purpose of the present invention is to solve above-mentioned technical problem, provide that a kind of structure is simple, easy to operate, detection efficiency
High, achievable rapid feedback, anti-interference, favorable repeatability, accuracy and accuracy height, adaptive should be got well, and be suitable for arc automobile
The specific purpose tool for the detection of vehicle body glass face difference of the face difference detection of vehicle body glass.
Technical solution includes cubing pedestal, and snap-gauge is set above the cubing pedestal, multiple capacitors are housed on the snap-gauge
Gauge head, the snap-gauge bottom surface have cambered surface corresponding with the top surface of workpiece with form surface, and the end of the snap-gauge is fixed on inspection through seat board
Have on pedestal, the bottom surface respective electrode backing plate with workpiece with form surface is additionally provided with below the snap-gauge;The cubing pedestal is additionally provided with use
In multiple clamping devices being tightly attached to electrode backing plate on workpiece with form surface.
It is fixed between the seat board and cubing pedestal by screw.
The clamping device includes that multiple ends for being tightly attached to the end of electrode backing plate on workpiece with form surface clamp dress
It sets and multiple middle clamping devices for will be tightly attached on workpiece with form surface in the middle part of electrode backing plate.
The end clamping device includes grip base, symmetrical two L clevis pieces and gripping block, the grip base
Lower end is fixed on cubing pedestal, and the horizontal segment of symmetrical two L clevis piece is fixed on cubing bottom through adjusting screw respectively
The upper end of seat sets gripping block between the vertical section of two L clevis pieces, by adjust bolt and adjusting nut by two vertical sections and
The rear end of gripping block links together, and the front end of the gripping block is equipped with for placing electrode backing plate end rounded corner.
The middle clamping device includes support base, adjustment seat and supporting pin, and the support base is fixed on cubing bottom
On seat, the top surface of the support base is fixed with adjustment seat, and the top surface of the adjustment seat is provided with threaded hole, the support pin surface
It is carved with external screw thread, lower section is located in the threaded hole of the adjustment seat.
Holding nut is further sleeved in the supporting pin.
The top of the supporting pin is smooth cambered surface.
The problem of for background technique, inventor are considered as non-contact capacitance range sensor for automobile
The face difference of vehicle body glass is detected, and capacitance type sensor has dynamic response characteristic good, and sensitivity and precision are high, it is quiet to can be achieved
The characteristics such as state and dynamic measurement.And the installation location difficulty of capacitor gauge head, measuring point flexibility are poor when in order to solve measurement
The problem of, inventor devises the snap-gauge and electronic pads of arc adaptable therewith for the arcuate structure of body of a motor car glass
Plate can install multiple capacitor gauge heads in different location as needed on snap-gauge, and test point is flexible, by workpiece with form surface (to
The body of a motor car glass of inspection) be fixed between snap-gauge and electrode backing plate can difference portion on convenient synchro measure workpiece with form surface
Position data, the reliability of positioning of capacitor gauge head is good, measuring point can be controlled flexibly, accuracy is high.Pass through capacitor gauge head pair
The distance of point to be measured carries out the data acquisition transmission end PC one by one, by the data of the data point (removing abnormal point) of acquisition back into
Row integration, it can be deduced that face difference forms multiple curves and shows at the end PC, to realize that automatic measurement, analysis and display are provided with
It tries hard to keep barrier.
For the accuracy for improving detection, fitting closely for snap-gauge and electrode backing plate and workpiece with form surface is extremely important, except to card
Except the cambered design of plate and electrode backing plate, to overcome gravity, it is necessary to it is tightly attached to electrode backing plate on workpiece with form surface upwards,
Therefore electrode backing plate is needed to carry out positioning and clamping, inventor uses clamping device thus, and the clamping device includes end
Clamping device and middle clamping device.
Cubing pedestal is fixed on through adjusting screw respectively to the horizontal segment of a two L clevis piece in the end clamping device
Upper end, can make two L clevis pieces adjustable in vertical height in this way, can be upward according to the thickness local directed complete set of workpiece with form surface
Clamping degree guarantees to guarantee fitting closely for vertical direction between electrode backing plate, workpiece with form surface and snap-gauge;By adjust bolt and
Adjusting nut links together the rear end of two vertical sections and gripping block, gripping block adjust can adjust bolt on rotation with
Proper angle is adjusted, then tightens adjusting nut to adjust the spacing of two L clevis pieces, gripping block is fixed on a certain set angle
On, to adapt on workpiece with form surface the different radians for clamping positions, realize positioning and clamping, further increase guarantee electrode backing plate,
Fitting between workpiece with form surface and snap-gauge;The front end of the gripping block is equipped with for placing electrode backing plate end rounded corner, electrode
The end of backing plate and workpiece with form surface just rests on rounded corner, realizes limit and positioning from horizontal direction.
In view of workpiece with form surface has carried out positioning and clamping from end, it is likely that being affected by gravity presence middle part and snap-gauge
The not close problem of fitting with electrode backing plate, therefore inventor is also provided with middle clamping device for being supported folder at middle part
Tightly, cooperated using the screw hole in supporting pin and adjustment seat, can easily adjust the vertical of supporting pin with the holding nut of housing
Highly, to realize to the jacking pinching action in the middle part of electrode backing plate.The top of the supporting pin is smooth cambered surface, is effectively pressed from both sides
Local cambered surface can be also applicable in while tight, avoid it is excessive to workpiece with form surface local pressure caused by destroy or deformation.
The utility model has the advantages that
The present invention is based on non-contact capacitance Distance-sensing principles to design the specific purpose tool that a kind of vehicle body glass face difference detects,
Capacitor gauge head is in conjunction with snap-gauge, it can be achieved that the measurement of multi-faceted different type face difference, avoids repeated disassembled and assembled, test point can
Flexible setting, electrode backing plate and workpiece with form surface fit closely realization effectively clamp and positioning, anti-interference it is good, the accuracy of detection
With reproducible, detection efficiency is high, cooperation PC machine can realize rapid feedback, be suitable for workpiece with form surface data collection point it is more, measurement
Precision is high and quickly progress operation processing and shape is needed to detect for the product face difference of arc-shaped curved surface.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Fig. 2 is scheme of installation of the workpiece with form surface on snap-gauge.
Fig. 3 is the structural schematic diagram of end clamping device.
Fig. 4 is the structural schematic diagram of middle clamping device.
Wherein, 1- cubing pedestal, 2- snap-gauge, 3- workpiece with form surface, 4- capacitor gauge head, 5- electrode backing plate, 6- seat board, the end 7-
Portion's clamping device, 7.1- grip base, 7.2-L clevis piece, 7.21- vertical section, 7.22- horizontal segment, 7.3- gripping block, 7.31-
Rounded corner, 7.4- adjust bolt, 7.5- adjusting nut, 7.6- adjust screw, 8- middle clamping device, 8.1- support base,
8.2- adjustment seat, 8.21- threaded hole, 8.3- holding nut, 8.4- supporting pin, 8.41- external screw thread, 8.42- cambered surface.
Specific embodiment
Explanation is further explained to the present invention with reference to the accompanying drawing:
Referring to Fig. 1 and Fig. 2, snap-gauge 2 is set above cubing pedestal 1, and multiple capacitor gauge heads 4, institute are fitted on the snap-gauge 2
2 bottom surface of snap-gauge is stated with cambered surface corresponding with the top surface of workpiece with form surface 3, the end of the snap-gauge 2 and seat board 6 are fixed, and seat board 6 passes through
Screw is fixed on cubing pedestal 1, seat board 6 can be made to remove from cubing pedestal 1 by unloading screw;Below the snap-gauge 2 also
Equipped with the bottom surface respective electrode backing plate 5 with workpiece with form surface 3;The cubing pedestal 1, which is additionally provided with, is close to electrode backing plate 5 for multiple
In the clamping device on workpiece with form surface.
The clamping device includes that multiple ends for being tightly attached to the end of electrode backing plate 5 on workpiece with form surface 3 clamp
Device 7 and multiple middle clamping devices 8 for being tightly attached to the middle part of electrode backing plate 5 on workpiece with form surface 3.
Referring to Fig. 3, the end clamping device 7 includes grip base 7.1, symmetrical two L clevis piece 7.2 and clamps
The lower end of block 7.3, the grip base 7.1 is fixed on cubing pedestal 1, the horizontal segment of symmetrical two L clevis piece 7.2
Two L clevis pieces are adjusted by adjusting screw 7.6 in 7.22 upper ends for being fixed on cubing pedestal 1 through adjusting screw 7.6 respectively
7.2 vertical height;Gripping block 7.3 is set between the vertical section 7.21 of two L clevis pieces 7.2, by adjusting bolt 7.4 and adjusting
Nut 7.5 links together the rear end of two vertical sections 7.21 and gripping block 7.3, and the front end of the gripping block 7.3, which is equipped with, to be used
In the stepped groove 7.31 for placing 5 end of electrode backing plate.
The middle clamping device 8 includes support base 8.1, adjustment seat 8.2, holding nut 8.3 and supporting pin 8.4, institute
It states support base 8.1 to be fixed on cubing pedestal 1, the top surface of the support base 8.1 is fixed with adjustment seat 8.2, the adjusting
The top surface of seat 8.2 is provided with threaded hole 8.21, and external screw thread 8.41 is carved on 8.4 surface of supporting pin, and lower section is located at the adjusting
In the threaded hole 8.21 of seat 8.2, top is smooth cambered surface 8.42, is further sleeved with holding nut 8.3 in the supporting pin 8.4.
Application method:
(1) first unclamp seat board 6 and cubing pedestal 1 screw, remove seat board 6 and snap-gauge 2, the setting position on snap-gauge 2
Insert multiple capacitor gauge heads 4;
(2) overturning snap-gauge 2 keeps its cambered surface upward, and workpiece with form surface 3 (vehicle body glass) to be measured is placed in the cambered surface of snap-gauge 2
Make its abutting, then electrode backing plate 5 is covered on workpiece with form surface 3, three's cambered surface is corresponding, keeps fit-state;
(3) overturning snap-gauge 2 keeps its cambered surface downward again, is just placed in above clamping device, the end of electrode backing plate 5 is just
It is placed in the stepped groove 7.31 of the gripping block 7.3 of end clamping device 7, by seat board 6 with the screw hole on cubing pedestal 1 to mutatis mutandis
Screw-driving;
(4) adjustment end clamping device 7: the vertical height for adjusting the adjusting L clevis piece 7.2 of screw 7.6 is first passed through, then is stirred
After proper angle, two L clevis pieces 7.2 will be clamped gripping block 7.3 by controlling to adjust nut 7.5, keep the angle of gripping block 7.3
Degree positioning, to guarantee electrode backing plate 5, workpiece with form surface 3 and the fitting of 2 three end of snap-gauge;
(5) adjust middle clamping device 7: rotational support nut 8.3 makes supporting pin 8.4 along the threaded hole of adjustment seat 8.2
8.21 vertically move until realizing electrode backing plate 5, workpiece on the jacking compression electrode backing plate 5 of cambered surface 8.41 of 8.4 upper end of supporting pin
Fitting in the middle part of 2 three of type face 3 and snap-gauge, the preparation before completing detection.
When detection, using electrode backing plate 5 as another electrode, capacitor gauge head 4 can the multiple distance letters of a Quick Acquisition
Number, being dismounted for multiple times is avoided, the rate of change that distance signal passes through capacitor is DC voltage, by direct voltage output with waveform
The mode of figure exports, in contrast with ideal waveform figure, multiple data simultaneously the end PC present, and can further with preset reason
Think that waveform values compare, be more than or lower than ideal waveform values, then by response alarm, feedback made, after acquiring data
Treatment process be the prior art, be not described in detail here.
After completing detection, unclamp again seat board 6 and cubing pedestal 1 screw can after removing snap-gauge 2 and electrode backing plate 5
The tool-type face 3 to be checked more renewed repeats aforesaid operations process.