CN216049785U

CN216049785U - Device for rapidly measuring flatness

Info

Publication number: CN216049785U
Application number: CN202122313635.5U
Authority: CN
Inventors: 盛立; 袁洁; 沈杰; 许恺; 董旻; 张颖
Original assignee: SAIC Volkswagen Automotive Co Ltd
Current assignee: SAIC Volkswagen Automotive Co Ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-03-15
Anticipated expiration: 2031-09-23

Abstract

The utility model provides a device for rapidly measuring flatness, which comprises: a frame body; the measuring mechanism and the supporting mechanism are symmetrically arranged on the bottom sides of the two ends of the frame body, the measuring mechanism comprises a ball probe and a sensing unit, the sensing unit acquires the Z-direction displacement of the ball probe, and the bottom side of the supporting mechanism comprises a roller encoder; wherein the measuring mechanism moves along the sliding groove Y on the frame body. The measuring device is simple and convenient to use, high in precision, capable of meeting the requirements of free adjustment in the Z direction and the Y direction, free from the influence of the modeling structure of a measured object and good in flexibility. Moreover, the device can perform targeted analysis while measuring, greatly improves the efficiency of flatness measurement and assembly inspection, saves working hours and effectively improves economic benefits.

Description

Device for rapidly measuring flatness

Technical Field

The utility model mainly relates to a measuring device, in particular to a device for rapidly measuring flatness.

Background

With the continuous development of the automobile industry, automobiles with frameless door models are more and more popular among consumers, especially young people. However, the frameless vehicle door also brings higher requirements on certain manufacturing and assembling precision while being cool and dazzling in shape. The mounting position of the frameless door glass has an influence on the lifting function, the vehicle sealing performance, the wind noise and the like. In the trial-manufacturing stage of the frameless vehicle door project, the applicant encounters the situation that the flatness of the lifted vehicle window glass and the flatness of the vehicle body side frame in the Y direction exceed the tolerance, so that the vehicle window glass cannot be completely inserted into the vehicle window guide groove. Therefore, it is very important to quickly judge whether the flatness of the frameless door glass meets the requirement.

In order to solve the problem, the following three main technical modes are adopted at the present stage, namely plug gauge measurement, measuring machine measurement and card plate measurement, but the three modes have the defects which are difficult to overcome.

Firstly, the minimum measuring range of the plug gauge is 0.5mm, the precision is too low, and the plane of the plug gauge cannot be completely attached to the radian of glass due to the fact that the glass and the side frame of the vehicle body have certain curvatures, so that the measurement precision is insufficient.

The second type is commonly used as a measuring machine, which can be guaranteed in terms of precision, but the operation steps are more complicated, the arrangement and the introduction of measurement data in the earlier stage are needed, the time consumption is high, the efficiency is low, and meanwhile, the measuring machine has certain requirements on site space.

In addition, the other method is to use the clamping plate for detection, the effect is poor in the aspect of compatibility, one clamping plate can only be suitable for one vehicle type, switching cannot be performed on different projects, the characteristic of flexibility is not realized, and the clamping plate can only qualitatively evaluate whether the flatness is ultra-poor or not and cannot quantitatively give a specific deviation value.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a simple, convenient, flexible and high-precision rapid measuring device, and aims to innovate and optimize the defects in the aspects.

In order to solve the above technical problem, the present invention provides a device for rapidly measuring flatness, comprising:

a frame body;

the measuring mechanism and the supporting mechanism are symmetrically arranged on the bottom sides of the two ends of the frame body, the measuring mechanism comprises a ball probe and a sensing unit, the sensing unit acquires Z-direction displacement data of the ball probe, and the bottom side of the supporting mechanism comprises a roller encoder;

wherein the measuring mechanism moves along the sliding groove Y on the frame body.

The utility model further discloses a device for rapidly measuring the flatness, which is characterized in that,

the measuring mechanism further comprises an adjusting stand column, the sensing unit is arranged in the adjusting stand column, the ball probe is sleeved with the spring mechanism in a butting mode and abuts against the sensing unit, and the lower end of the ball probe extends out of the adjusting stand column.

The utility model further discloses a device for rapidly measuring the flatness, which is characterized by further comprising:

the analog-to-digital conversion unit is connected with the roller encoder and performs analog-to-digital conversion on the X-direction displacement of the roller encoder and the Z-direction displacement of the ball probe acquired by the sensing unit;

the control unit is connected with the analog-to-digital conversion unit and compares the X-direction displacement data and the Z-direction displacement data with a set tolerance range;

and the indicating unit is connected with the control unit and indicates the Z-direction displacement data which exceeds the set tolerance range.

the storage unit is connected with the control unit and stores the X-direction displacement data and the Z-direction displacement data output by the control unit;

the input/output unit is connected with the storage unit, inputs the set tolerance range and outputs the data stored in the storage unit;

and the display unit is connected with the control unit and displays the Z-direction displacement data.

the sliding block is arranged on the upper end face of the adjusting upright post, the sliding block is embedded in the sliding groove to move in the Y direction, and the sliding groove is formed in the back face of the frame body;

and the screwing unit is arranged on the upper end surfaces of the sliding block and the adjusting upright post and clamps the sliding block and the sliding groove tightly.

the bottom of the supporting mechanism further comprises a guide wheel, and the guide wheel and the roller encoder move along the X direction.

the frame body comprises a rectangular body and is integrated with the supporting mechanism.

the display unit and the indicating unit are arranged on the front surface of the frame body.

the sensing unit comprises a differential variable-voltage sensor, and the indicating unit comprises an acousto-optic indicating unit.

and Y-direction scale display is arranged on the sliding groove.

Compared with the prior art, the utility model has the following advantages:

the measuring device is simple and convenient to use, high in precision, capable of meeting the requirements of free adjustment in the Z direction and the Y direction, free from the influence of the modeling structure of a measured object and good in flexibility. Moreover, the device can perform targeted analysis while measuring, greatly improves the efficiency of flatness measurement and assembly inspection, saves working hours and effectively improves economic benefits.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the principle of the utility model. In the drawings:

FIG. 1 is a schematic structural diagram of a preferred embodiment of a measuring device according to the present invention;

FIG. 2 is a second schematic structural diagram of a preferred embodiment of the measuring apparatus of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 1;

FIG. 4 is a functional block diagram of the measuring apparatus according to the present invention;

FIG. 5 is a schematic diagram of the test of the present invention in a preferred embodiment;

FIG. 6 is a graphical illustration of the deviation curve generated during testing for the embodiment of FIG. 5.

Reference numerals

1- -ball probe

2- -adjusting the column

3-digital display screen

4-indicator light

5-pressing switch

6- -frame body

7- -data interface

8-roller encoder

9- -chute

10-screw nut

11- -slide block

12-differential voltage-changing type sensor

13- -spring mechanism

14- -guide wheel

41-analog-to-digital conversion unit

42-control unit

43-indicating unit

44-memory cell

45-input/output unit

46-display unit

61-body part

62-support part

621-roller encoder fixing base

601-measuring mechanism

602-supporting mechanism

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only examples or embodiments of the application, from which the application can also be applied to other similar scenarios without inventive effort for a person skilled in the art. Unless otherwise apparent from the context, or otherwise indicated, like reference numbers in the figures refer to the same structure or operation.

As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited. Further, although the terms used in the present application are selected from publicly known and used terms, some of the terms mentioned in the specification of the present application may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Further, it is required that the present application is understood not only by the actual terms used but also by the meaning of each term lying within.

Flow charts are used herein to illustrate operations performed by systems according to embodiments of the present application. It should be understood that the preceding or following operations are not necessarily performed in the exact order in which they are performed. Rather, various steps may be processed in reverse order or simultaneously. Meanwhile, other operations are added to or removed from these processes.

Example 1

Referring to fig. 1 and fig. 2, a schematic structural diagram of a preferred embodiment of the measuring device of the present invention is shown, which includes the following parts:

in the fast measuring device of this embodiment, the main body is a frame body 6, and the bottom sides of the two symmetrical ends of the frame body 6 are respectively provided with an adjusting mechanism 601 and a supporting mechanism 602.

In the preferred embodiment shown, the frame body 6 is a rectangular parallelepiped and is integral with the cylindrical support structure, thus forming an inverted L-shaped integral structure.

For convenience of description, the inverted L-shaped assembly will be described below with reference to the illustrated embodiment as being divided into the body portion 61 and the support portion 62. The supporting portion 62 is one of the components of the supporting mechanism 602, and the main body portion 61 corresponds to the frame body 6.

The front of the body part 61 is provided with a digital display screen 3, an indicator lamp 4 and a plurality of push switches 5, and the push switches 5 comprise buttons for adjustment, reset, confirmation and the like.

In the preferred embodiment, the supporting mechanism 602 includes the supporting portion 62 and the roller encoder 8. Wherein, the supporting portion 62 is an inverted T-shape, and the bottom portion thereof includes a roller encoder fixing seat 621.

The measuring mechanism 601 is disposed at the bottom side of the other end opposite to the supporting mechanism 602, and includes an adjusting column 2, the adjusting column 2 is in a circular truncated cone shape, the differential variable-pressure sensor 12 is embedded in the adjusting column 2, the spring mechanism 13 is sleeved at the upper end of the ball probe 1 and abuts against the differential variable-pressure sensor 12, and the lower end of the ball probe 1 extends out of the adjusting column 2.

The ball probe 1 is embedded in the adjusting column 2 and extends out of the lower end of the adjusting column 2, the upper end face of the adjusting column 2 is fixedly connected with a slide block 11, the slide block 11 is embedded in the chute 9, and the chute 9 is formed by arranging the back face of the body part 61 along the length direction of a cuboid.

In the measuring mechanism 601 shown in the figure, the direction in which the ball probe 1 moves is shown as the Z direction.

Fig. 2 further illustrates the structural features of the slide groove 9, whereby the slide 11 can slide along the slide groove 9, the sliding direction being defined as the Y-direction.

As can be seen from fig. 2, a guide wheel 14 and a roller encoder 8 are respectively disposed at front and rear positions of the roller encoder fixing seat 621, the moving direction of the two wheels is the X direction, and the roller on the roller encoder 8 is guided by the guide wheel 14 to roll in the X direction.

Fig. 3 further illustrates a schematic cross-sectional structure of the measuring mechanism 601.

This measuring mechanism 601 is including adjusting stand 2, should adjust stand 2 and be the round platform form, and differential variable pressure formula sensor 12 inlays to be established in this adjusts stand 2, and spring mechanism 13 and butt differential variable pressure formula sensor 12 are established to the upper end cover of ball probe 1, and the lower extreme of ball probe 1 stretches out and adjusts stand 2, between the up end of adjusting stand 2 and spout 9, is provided with spring mechanism 13 for fix slider 11 in spout 9.

During assembly, the sliding block 11 is firstly placed into the sliding groove 9, then the nut 10 is screwed and the sliding block 11 is assembled together, and the sliding block 11 and the sliding groove 9 are clamped tightly through the screwing force of the nut 10. The direction in which the slider 11 moves along the chute 9 is illustrated as the Y direction.

In addition, please refer to fig. 4, which shows the functional module components of the apparatus.

Including an analog-to-digital conversion unit 41, a control unit 42, an instruction unit 43, a storage unit 44, an input/output unit 45, and a display unit 46. The analog-to-digital conversion unit 41 converts the X-direction displacement of the roller encoder 8 and the Z-direction displacement of the ball probe 1 into digital values, inputs the digital values into the control unit 42, compares the digital values with upper and lower tolerance limit values preset in the control unit 42, and sends an instruction to prompt by the indicating unit 43 when the tolerance values exceed the upper and lower tolerance limits. In addition, the control unit 42 also puts the X-direction and Z-direction displacement data into the storage unit 44, and the input and output unit 45 acquires the relevant data from the storage unit 44 in batches through the data interface 7 as needed. The user can also provide the control unit 42 with the tolerance ranges required for the measurements via the input-output unit 45. The display unit 46 is used for displaying the measured value in the Z direction.

In a preferred embodiment, the indication unit 43 may be the indicator light 4 in fig. 1, or other audible and visual alarm indication mechanism.

In a preferred embodiment, the display unit 46 can be the digital display screen 3 of FIG. 1.

In a preferred embodiment, the input/output unit 45 can be the push switch 5 of FIG. 1.

The operation of the apparatus of the present invention will be described in detail with reference to the above-mentioned components.

FIG. 5 shows a schematic diagram of the test applied to a preferred embodiment of the present invention.

During actual measurement, the guide wheel 14 is placed on a side frame of a vehicle body and used as a reference surface, the adjusting upright post 2 is moved by referring to the width of the window guide groove, so that the ball probe 1 can be tightly attached to the contact surface of window glass and the window guide groove, the measuring needle 1 is pressed on a part to be measured (the surface of the glass) by the aid of pretightening force of the spring mechanism 13 in the adjusting upright post 2, accordingly, drop height is measured, and measuring accuracy is guaranteed. Because the ball probe 1 is connected with the adjusting upright post 2 through the spring mechanism 13, the Z-direction displacement of the ball probe 1 is converted into an electric signal through the electromagnetic induction principle by the differential variable pressure type sensor 12 in the adjusting upright post 2, and the actual measurement value is displayed on the digital display screen 3 in real time.

According to the requirement and tolerance definition, a theoretical value and a tolerance value are input in advance through the digital display screen 3 and the press switch 5 before measurement, so that whether a measured value of the current position is within a tolerance range can be reflected in real time through the indicator lamp 4 according to an actual measured value in the measurement process, and meanwhile, an exact actual measured value reading can also be reflected on the digital display screen 3 in real time.

The ball probe 1 moves up and down along with the movement of the guide wheel 14 along the X direction of the side frame of the vehicle body, the displacement change of the Z direction is measured up and down to obtain the parameter of the displacement, meanwhile, the roller encoder 8 calculates the X direction sliding distance according to the rotation number of the roller to obtain the position point of the X direction, therefore, the moving ball probe 1 reflects the Z direction displacement condition of the X direction, and the change quantity of the Z direction is obtained continuously along with the movement of the X direction. And the Z-direction displacement is displayed through the digital display screen 3, and the flatness condition of the glass of the frameless vehicle door is rapidly measured and obtained through the process.

In the actual measurement process, the control unit 42 compares and judges the real-time measured data, once the flatness value at the position exceeds the tolerance requirement, the indicator light 4 will send out a red light alarm, and at the same time, a mark can be made at the position on the real vehicle, and the actual measurement value in the current state is recorded. After all the measurements are completed, the assembly condition of the part is quickly positioned and quality analysis work is carried out by means of the generated measurement curve and the specific deviation area recorded on the real vehicle.

FIG. 6 is a graph showing the deviation generated by the measuring apparatus of the present invention.

Wherein, the X coordinate represents the distance that the roller on the roller encoder 8 passes, i.e. the X displacement, and the Y coordinate represents the actual flatness value measured by the ball probe 1 on the frameless door glass within the X displacement, wherein, 1.4 and 1.6 respectively represent the upper and lower tolerances corresponding to the theoretical flatness value on the frameless door glass within the X displacement (here, 1.5 represents the theoretical value).

Because the device inputs a measurement theoretical value and a tolerance value in advance through the press switch 5, the indicator lamp 4 can perform real-time feedback in the whole measurement process, the indicator lamp is displayed as a green lamp in a tolerance range, and an area exceeding the tolerance is displayed as a red lamp, namely, in the graph 6, the indicator lamp is green in a range of 1.4-1.6, and is turned into red when exceeding the range, so that a measurer can record actual measurement values of an out-of-tolerance position and an out-of-tolerance position at the first time.

In addition, the data interface 7 in the preferred embodiment may be used for device charging in addition to data transfer.

In addition, the back of the frame body 6 is provided with a sliding groove 9, the adjusting upright post 2 and the adjusting upright post are moved and positioned in the Y direction through a sliding block 11 and a screwing nut 10, and a scale display in the Y direction is arranged on the frame body 9 in a matching manner, so that the Y-direction distance between the two parts can be measured.

In addition to the elongated frame body in the above embodiments, other symmetrical structures such as elongated arcs may be used.

Compared with the prior art, the device for rapidly measuring the flatness has the following advantages in technical effect compared with the traditional device and method:

firstly, high precision, high efficiency and flexibility

The device has simple structure and low manufacturing cost, but can still meet the requirement of high precision (the precision reaches 0.01 mm). The measurement result can be reflected in real time in the measurement process without complex work such as early data processing and the like, so that the measurement efficiency is higher. The device can meet the requirements of free adjustment in the Z direction and the Y direction, is not influenced by the modeling structure of a measured object, and has the characteristic of better flexibility.

The following table is listed as a comparison between the present device and existing track gauges, measuring devices and cards:

secondly, the device can perform targeted analysis while measuring

The encoder is installed on the roller of the measuring device, so that the displacement of the measuring device can be recorded in the whole measuring process, a curve of which the flatness value changes along with a measuring path is generated, the flatness fluctuation condition of a part to be measured in any interval is visually seen, and the part assembling, positioning and correcting are conveniently and rapidly carried out in a targeted mode.

By combining the characteristics and advantages, the device has reliable function and good stability, is labor-saving and convenient, greatly improves the efficiency of assembling and checking the frameless vehicle door glass, saves working hours, and effectively improves economic benefits.

In practical use scenarios, the device of the present invention can be used not only for measuring frameless door glass, but also for measuring flatness of any other parts on a vehicle in a matching relationship, such as matching a roof with front and rear windscreens, matching a fender with a door, matching front and rear covers with a side frame of a vehicle body, and the like.

Moreover, the measuring device is not limited to be used on automobiles, and can be widely applied to part matching inspection in other engineering machinery fields.

Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing disclosure is by way of example only, and is not intended to limit the present application. Various modifications, improvements and adaptations to the present application may occur to those skilled in the art, although not explicitly described herein. Such modifications, improvements and adaptations are proposed in the present application and thus fall within the spirit and scope of the exemplary embodiments of the present application.

Also, this application uses specific language to describe embodiments of the application. Reference throughout this specification to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the present application is included in at least one embodiment of the present application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.

Similarly, it should be noted that in the preceding description of embodiments of the present application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not intended to require more features than are expressly recited in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single embodiment disclosed above.

Numerals describing the number of components, attributes, etc. are used in some embodiments, it being understood that such numerals used in the description of the embodiments are modified in some instances by the use of the modifier "about", "approximately" or "substantially". Unless otherwise indicated, "about", "approximately" or "substantially" indicates that the number allows a variation of ± 20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximations that may vary depending upon the desired properties of the individual embodiments. In some embodiments, the numerical parameter should take into account the specified significant digits and employ a general digit preserving approach. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the range are approximations, in the specific examples, such numerical values are set forth as precisely as possible within the scope of the application.

Although the present application has been described with reference to the present specific embodiments, it will be recognized by those skilled in the art that the foregoing embodiments are merely illustrative of the present application and that various changes and substitutions of equivalents may be made without departing from the spirit of the application, and therefore, it is intended that all changes and modifications to the above-described embodiments that come within the spirit of the application fall within the scope of the claims of the application.

Claims

1. An apparatus for rapidly measuring flatness, the apparatus comprising:

a frame body;

2. Apparatus for rapid flatness measurement according to claim 1,

3. The apparatus for rapidly measuring flatness according to claim 2, further comprising:

the control unit is connected with the analog-to-digital conversion unit and compares the data of the X-direction displacement and the data of the Z-direction displacement with a set tolerance range;

and the indicating unit is connected with the control unit and indicates the data of the Z-direction displacement which exceeds the set tolerance range.

4. The apparatus for rapidly measuring flatness according to claim 3, further comprising:

the storage unit is connected with the control unit and stores the data of the X-direction displacement and the data of the Z-direction displacement output by the control unit;

and the display unit is connected with the control unit and displays the data of the Z-direction displacement.

5. The apparatus for rapidly measuring flatness according to claim 4, further comprising:

6. Apparatus for rapid flatness measurement according to claim 5,

7. Apparatus for rapid flatness measurement according to claim 6,

8. Apparatus for rapid flatness measurement according to claim 7,

9. Apparatus for rapid flatness measurement according to claim 8,

10. Apparatus for rapid flatness measurement according to claim 9,

and Y-direction scale display is arranged on the sliding groove.