CN215832699U - Flatness detection device - Google Patents
Flatness detection device Download PDFInfo
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- CN215832699U CN215832699U CN202121803759.5U CN202121803759U CN215832699U CN 215832699 U CN215832699 U CN 215832699U CN 202121803759 U CN202121803759 U CN 202121803759U CN 215832699 U CN215832699 U CN 215832699U
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Abstract
The utility model discloses a flatness detection device, which comprises a rack, wherein a plurality of sensors are arranged on the rack, and the sensors are pressure sensors or flatness sensors; each sensor comprises a probe vertically arranged upwards, and the tops of all the probes are positioned on the same horizontal plane; all the probes form a workpiece platform for supporting a workpiece, an air cylinder is vertically arranged above the probes, and an air cylinder arm of the air cylinder is horizontally provided with a pressing plate; the device also comprises a control unit for collecting all the detection data of the sensors. The utility model has the beneficial effects that: the utility model uses a plurality of sensors to detect the same plane of the product at the same time, detects the planeness or pressure value thereof, and then calculates the planeness of the plane to be detected by the control unit through the least square method; the method is simple and efficient to operate, accurate in measurement and worthy of wide popularization.
Description
Technical Field
The utility model relates to the field of machinery, in particular to a flatness detection device.
Background
Most products in the existing stamping industry have certain requirements on the flatness of the products, when the products are detected, three-coordinate measurement is usually adopted, the input cost is high, the measurement period is long, and the professional skills of required measurers are high. How to detect the flatness of the product quickly, efficiently and accurately is a technical problem to be solved urgently at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a flatness detection device which can quickly, efficiently and accurately detect the flatness of a product.
In order to achieve the purpose, the utility model provides the following technical scheme:
a flatness detection device comprises a rack, wherein a plurality of sensors are arranged on the rack, and the sensors are pressure sensors or flatness sensors; each sensor comprises a probe vertically arranged upwards, and the tops of all the probes are positioned on the same horizontal plane; all the probes form a workpiece platform for supporting a workpiece, an air cylinder is vertically arranged above the probes, and an air cylinder arm of the air cylinder is horizontally provided with a pressing plate; the device also comprises a control unit for collecting all the detection data of the sensors.
Preferably, the pressure plate is connected to a cylinder arm of the cylinder through a plurality of springs.
Preferably, a circular base is arranged on the rack, a plurality of through holes are formed in the base in a penetrating mode, and the probes penetrate through the through holes under the base and then are exposed out of the through holes.
Preferably, an L-shaped cantilever is arranged on the frame, and the cylinder is arranged on the cantilever.
Preferably, the device further comprises a display screen connected with the control unit.
Preferably, all of the sensors are height-adjustably arranged on the machine frame.
The utility model has the beneficial effects that: the utility model uses a plurality of sensors to detect the same plane of the product at the same time, detects the planeness or pressure value thereof, and then calculates the planeness of the plane to be detected by the control unit through the least square method; the method is simple and efficient to operate, accurate in measurement and worthy of wide popularization.
Drawings
FIG. 1 is a schematic view of a structure of an apparatus according to the present invention in a clamped state.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
As shown in fig. 1, a flatness detecting apparatus according to the present invention includes a frame 10, and a circular base 12 and an L-shaped cantilever 14 are disposed on the frame 10. The base 12 is provided with a plurality of through holes 16.
A plurality of sensors 18 are disposed below the base 12, the sensors 18 being pressure or flatness sensors, each sensor 18 including a vertically upwardly disposed probe 20. The probes 20 pass through the through holes 16 from the bottom of the base 12 and are exposed out of the through holes 16, and the tops of all the probes 20 are located on the same horizontal plane. All of the probes 20 constitute a workpiece table that supports the workpiece. The through holes 16 are used to ensure the verticality of the probes 20, and avoid the inclination of the probes 20, which results in the top of the probes 20 not being located at the same horizontal plane.
A control unit (not shown) and a display (not shown) are also included, and all of the sensors 18 are connected to the control unit to upload the sensed data.
An air cylinder 22 is vertically and downwardly arranged on the cantilever 14, and a pressure plate 26 is horizontally arranged on the arm of the air cylinder 22 through a plurality of springs 24. The springs 24 are used to ensure that the pressure plate 26 applies a non-rigid force to the sensor 18 through the workpiece, thereby avoiding damage to the sensor 18.
Further, all the sensors 18 are height-adjustably provided on the frame 10, which may be implemented by, for example, providing the sensors 18 on adjusting bolts, which are screwed with the frame 10, and finely adjusting the height of the sensors 18 by rotating the adjusting bolts; or other similar structure. The height adjusting structure is not shown because it is a common structure in the art and the structure itself is not the innovation of the present invention.
The working principle of the utility model is as follows: placing the surface to be detected of the workpiece downwards on a probe 20 positioned on the same horizontal plane, supporting the workpiece through the probe 20, and forming a plurality of detection points on the surface to be detected of the workpiece; the air cylinder 22 drives the pressure plate 26 to press the workpiece downwards to a certain stroke, so that each sensor 18 is stressed; the force applied by each sensor 18 is small simply by the gravity of the workpiece, which is easy to cause large error. The sensor 18 transmits the detected values to the control unit, and the control unit calculates the detection values of all the detection points by a least square method and converts the detection values to obtain the flatness of the plane to be detected. The least square method is a mathematical tool widely applied in the fields of various disciplines of data processing such as error estimation, uncertainty, system identification and prediction, forecast and the like. A step of calculating the flatness using the least square method is disclosed in patent CN200910046279.6, which is also one of the methods adopted in the present invention; the flatness is obtained by collecting flatness error values of a plurality of points on a plane to be detected and converting; on the basis, the flatness error value can be replaced by the stress magnitude, and then the flatness can be obtained through conversion. The above-described calculation methods are not described in detail since they are commonly used and well known in the art, and are neither innovative nor technical points of the present invention. The utility model only provides a detection structure which is convenient to convert to obtain the flatness by using a least square method.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides a flatness detecting device, its includes the frame, its characterized in that: the rack is provided with a plurality of sensors, and the sensors are pressure sensors or flatness sensors; each sensor comprises a probe vertically arranged upwards, and the tops of all the probes are positioned on the same horizontal plane; all the probes form a workpiece platform for supporting a workpiece, an air cylinder is vertically arranged above the probes, and an air cylinder arm of the air cylinder is horizontally provided with a pressing plate; the device also comprises a control unit for collecting all the detection data of the sensors.
2. The flatness detecting apparatus according to claim 1, wherein: the pressure plate is connected to a cylinder arm of the cylinder through a plurality of springs.
3. The flatness detecting apparatus according to claim 1, wherein: the probe is characterized in that a circular base is arranged on the rack, a plurality of through holes are formed in the base in a penetrating mode, and the probe penetrates through the base and is exposed out of the through holes.
4. The flatness detecting apparatus according to claim 1, wherein: the frame is provided with an L-shaped cantilever, and the air cylinder is arranged on the cantilever.
5. The flatness detecting apparatus according to claim 1, wherein: the display screen is connected with the control unit.
6. The flatness detecting apparatus according to claim 1, wherein: all the sensors are arranged on the machine frame in a height-adjustable manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121803759.5U CN215832699U (en) | 2021-08-04 | 2021-08-04 | Flatness detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121803759.5U CN215832699U (en) | 2021-08-04 | 2021-08-04 | Flatness detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215832699U true CN215832699U (en) | 2022-02-15 |
Family
ID=80193736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121803759.5U Active CN215832699U (en) | 2021-08-04 | 2021-08-04 | Flatness detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215832699U (en) |
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2021
- 2021-08-04 CN CN202121803759.5U patent/CN215832699U/en active Active
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