A full-automatic detection system and method for static and dynamic characteristics of a substrate

Abstract

The application discloses a kind of full-automatic detection system and method of substrate static and dynamic characteristics, it is related to substrate detection technical field, including U-shaped slide rail, the U-shaped slide rail is installed in horizontal slide, and the opening end of U-shaped slide rail is towards the substrate to be detected;U-shaped slide rail slidingly connects laser displacement sensor, and laser displacement sensor moves position to obtain sampling point in the rotation process of the substrate to be detected.The application can measure the static characteristics and dynamic characteristics of the substrate to be detected, the specific detection geometric characteristics include end face circle runout, radial circle runout, flatness and thickness etc., improve detection efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of substrate detection, and in particular to a substrate static and dynamic characteristic full-automatic detection system and method. BACKGROUND

[0002] At present, the geometric dimensions and tolerances, surface roughness, tooth top and end face to the radial runout and end face runout tolerance of the installation hole axis, and other static technical indicators and detection methods of the circular saw blade have been perfected, but due to the introduction of the dynamic characteristic indicators of the circular saw blade, the existing circular saw blade detection method cannot meet the higher detection requirements.

[0003] For example: CN211060865U discloses a circular saw blade end face flatness detection device, which comprises a base plate, a fixed frame fixedly arranged on the base plate, a guide rail fixedly arranged on the fixed frame, a sliding block slidingly arranged on the guide rail, at least two laser displacement sensors fixedly arranged on the sliding block, a motor arranged below the guide rail, and a magnetic member fixedly arranged on the motor; by arranging two laser displacement sensors on the diameter of the circular saw blade, the distance data of the two circumferences of the circular saw blade to the laser displacement sensors can be measured, and if the data obtained by the two laser displacement sensors are different, it is judged that the flatness of the circular saw blade does not meet the requirements. The above-mentioned detection device can only detect the flatness, and cannot detect other static characteristics such as end face runout and radial runout; and cannot detect dynamic characteristics such as transverse vibration. SUMMARY

[0004] In view of the deficiencies of the prior art, the purpose of the present application is to provide a substrate static and dynamic characteristic full-automatic detection system and method, which can measure the static and dynamic characteristics of the substrate to be detected, and the specific geometric characteristics include end face runout, radial runout, flatness and thickness, etc., and improve the detection efficiency.

[0005] In order to achieve the above-mentioned purpose, the present application is realized by the following technical scheme:

[0006] In the first aspect, the embodiments of the present application provide a substrate static and dynamic characteristic full-automatic detection system, which comprises a U-shaped sliding rail, the U-shaped sliding rail is installed on a horizontal linear motion module, and the opening end of the U-shaped sliding rail faces the substrate to be detected; the U-shaped sliding rail is slidingly connected with a laser displacement sensor, and the laser displacement sensor changes position to obtain a plurality of sampling points during the rotation of the substrate to be detected.

[0007] As a further implementation manner, the laser displacement sensor is driven by a guide rail motor to move along the U-shaped sliding rail, the substrate to be detected is installed on a driving spindle, and the driving spindle is connected with a spindle motor; the guide rail motor and the spindle motor are respectively connected with a control system.

[0008] As a further implementation manner, the detection head of the laser displacement sensor is directed towards the surface of the substrate to be detected, for collecting the radial parameters of the substrate to be detected.

[0009] As a further implementation manner, the spindle motor is advanced by one detection unit after the laser displacement sensor measures the radial parameters of the substrate to be detected once.

[0010] As a further implementation manner, the driving spindle is provided with an encoder, and the encoder is connected to the control system.

[0011] As a further implementation manner, the horizontal linear motion module is installed on the frame, and the horizontal linear motion module is arranged perpendicular to the axial direction of the driving spindle.

[0012] As a further implementation manner, the horizontal linear motion module comprises a horizontal sliding table and a horizontal linear sliding rail, and the horizontal sliding table is slidingly connected to the upper side of the horizontal linear sliding rail.

[0013] The U-shaped sliding rail is installed on the horizontal sliding table, and the horizontal sliding table is connected to the driving mechanism, and the driving mechanism is connected to the control system.

[0014] In a second aspect, the embodiments of the present application further provide a full-automatic detection method for static and dynamic characteristics of a substrate, and the detection system is used, and in the rotation process of the substrate to be detected, the laser displacement sensor moves along the U-shaped sliding rail and sequentially passes through a plurality of detection positions.

[0015] The laser displacement sensor obtains the three-dimensional profile of the substrate to be detected through high-frequency sampling points; the three-dimensional entity of the substrate to be detected is obtained after coordinate conversion and data fitting; and the position of unsuitable static and dynamic characteristics is marked according to the flatness standard of the substrate to be detected.

[0016] As a further implementation manner, the laser displacement sensor moves by one unit of measurement accuracy along the direction of the U-shaped sliding rail every rotation of the substrate to be detected; and the end face run-out under the distribution of each radius of the surface of the substrate to be detected is obtained through high-frequency sampling points.

[0017] The three-dimensional surface topography of the substrate to be detected is drawn through coordinate superposition, and the overall end face run-out tolerance is obtained.

[0018] As a further implementation manner, the substrate to be detected rotates slowly while the laser displacement sensor moves along the U-shaped sliding rail; and the computer calculates the fitting straight line of each up-down deviation curve in the radial direction of the substrate to be detected in the three-dimensional mode.

[0019] The slope of the fitting straight line combined with the deviation curve is optimized to zero, for offsetting the straightness error of the axial line of the driving spindle; and all the fitting straight lines after calculation and processing are combined into a new circular surface, and the overall up-down deviation surface obtained at this time is the flatness of the substrate to be detected.

[0020] The beneficial effects of the present application are as follows:

[0021] (1) The laser displacement sensor of the present application is installed on a U-shaped slide rail, and the U-shaped slide rail is installed on a horizontal linear motion module. During the rotation of the to-be-detected base body, the laser displacement sensor moves around the to-be-detected base body along the U-shaped slide rail at a certain speed, and can non-contact measure the front and back surfaces of the to-be-detected base body. Then, the general profile of the surface of the to-be-detected base body is obtained through coordinate conversion, and finally the three-dimensional topography of the surface of the circular saw blade base body is obtained through an optimized fitting algorithm. In addition, according to the national standard of the end face run-out and flatness of the circular saw blade, the unqualified polar coordinate positions are marked, and the efficient and intelligent detection of the end face run-out of the circular saw blade is realized.

[0022] (2) The present application drives the circular saw blade to rotate by the driving spindle, and the number of rotations of the circular saw blade is collected by the encoder. The laser displacement sensor moves along the horizontal linear slide rail at a slow speed, so that the measurement track is distributed throughout the plane of the circular saw blade base body. In the three-dimensional mode, the fitting straight line of each up-down deviation curve in the radial direction of the circular saw blade is calculated by the computer, and the slope of the fitting straight line obtained by combining the deviation curve is optimized to zero, which is used to offset the straightness error of the driving spindle axis.

[0023] (3) The present application drives the circular saw blade to rotate at high speed by the driving spindle, and the to-be-cut material is fed to the circular saw blade by the lifting feeding table. The laser displacement sensor moves along the U-shaped slide rail to measure the transverse vibration of the circular saw blade at different radii, and after one side detection is completed, the laser displacement sensor will move to the other side along the U-shaped slide rail to detect the transverse vibration of the to-be-detected base body. BRIEF DESCRIPTION OF DRAWINGS

[0024] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application and the explanation thereof, to explain the present application, and do not constitute an improper limitation of the present application.

[0025] Figure 1 is a schematic diagram of the overall structure of the present application according to one or more embodiments;

[0026] Figure 2 is a front view of a detection device according to one or more embodiments of the present application;

[0027] Figure 3 is a top view of a detection device according to one or more embodiments of the present application;

[0028] Figure 4 is a perspective view of a U-shaped slide rail according to one or more embodiments of the present application;

[0029] Figure 5 is a side view of a U-shaped slide rail according to one or more embodiments of the present application;

[0030] Figure 6 is a schematic diagram of a flatness detection three-dimensional topography route according to one or more embodiments of the present application.

[0031] Wherein, 1, the substrate to be detected, 2, the driving main shaft, 3, the rack, 4, the horizontal linear motion module, 41, the horizontal sliding table, 42, the driving mechanism, 43, the horizontal linear slide rail, 5, the detection assembly, 51, the laser displacement sensor, 511, the first detection position, 512, the second detection position, 513, the third detection position, 514, the U-shaped slide rail, 515, the fixing piece, 6, the control cabinet, 7, the display, 8, the alarm device. DETAILED DESCRIPTION

[0032] Example one:

[0033] The present embodiment provides a kind of substrate static and dynamic characteristics full-automatic detection system, as shown in Figure 1, including rack 3, driving main shaft 2, detection assembly 5, horizontal linear motion module 4 and control system (control cabinet 6), driving main shaft 2, detection assembly 5 and horizontal linear motion module 4 are installed in rack 3, and are connected with control cabinet 6;Control cabinet 6 is equipped with display 7 and alarm device 8. Figures 1-3

[0034] In the present embodiment, rack 3 uses cast iron material, can make platform have good vibration resistance and strength.

[0035] Specifically, driving main shaft 2 is connected with main shaft motor, and the substrate to be detected 1 is installed on driving main shaft 2, which is rotated by main shaft motor driving driving main shaft 2 and the substrate to be detected 1. Figure 3 As shown in Figure 2, the substrate to be detected 1 is located outside the rack 3;In the present embodiment, circular saw blade is used as the substrate to be detected 1.

[0036] Driving main shaft 2 is provided with an encoder, and the number of revolutions of the circular saw blade is collected by the encoder.

[0037] Horizontal linear motion module 4 is arranged on one side of driving main shaft 2, and the extension direction of horizontal linear motion module 4 is perpendicular to the axial direction of driving main shaft 2. Figure 3 As shown in Figure 3, horizontal linear motion module 4 includes horizontal sliding table 41 and horizontal linear slide rail 43, horizontal sliding table 41 is slidingly connected to horizontal linear slide rail 43, and the two can be driven by screw nut mechanism.

[0038] Detection assembly 5 includes laser displacement sensor 51 and U-shaped slide rail 514, U-shaped slide rail 514 is fixed to horizontal sliding table 41, and the transverse movement of U-shaped slide rail 514 can be realized.

[0039] ​The open end of the U-shaped slide rail 514 is directed towards the circular saw blade. By moving along the horizontal linear slide rail 43, the laser displacement sensor 51 mounted on the U-shaped slide rail 514 can obtain more sampling points. The laser displacement sensor 51 is slidably connected to the U-shaped slide rail 514. By locating the laser displacement sensor 51 at different positions of the U-shaped slide rail 514, multi-point sampling can be achieved.

[0040] As shown in Figure 4 and Figure 5 , three sampling points are arranged on the U-shaped slide rail 514, i.e. the first detection position 511, the second detection position 512 and the third detection position 513. The second detection position 512 is located at the corner of the U-shaped slide rail 514, and the first detection position 511 and the third detection position 513 are oppositely arranged.

[0041] The U-shaped slide rail 514 is connected to the horizontal slide platform 41 by the fixing member 515. The horizontal slide platform can be an L-shaped plate member.

[0042] The relative movement between the laser displacement sensor 51 and the U-shaped slide rail 514 is achieved by the driving mechanism 42. The driving mechanism 42 includes a driving platform, a guide rail motor, and a sprocket and chain mechanism connected to the guide rail motor. The driving platform is installed on the guide rail and moves on the guide rail by the driving motor. The sprocket and chain mechanism driven by the guide rail motor drives the laser displacement sensor 51 to move along the U-shaped slide rail 514.

[0043] The detection head of the laser displacement sensor 51 is directed towards the surface of the to-be-detected base body 1 for collecting the radial parameters of the to-be-detected base body 1. The laser displacement sensor 51, the encoder, the guide rail motor and the main shaft motor are respectively connected to the control system.

[0044] The relative rotation relationship between the guide rail motor and the main shaft motor is set by the control system to determine the movement speed of the laser displacement sensor 51. When the laser displacement sensor 51 completes the measurement of the radial parameters on the circular saw blade once, the main shaft motor advances one detection unit, so that the circular saw blade rotates one unit. Finally, the data in the form of the function f(r i , θ i , h i , t) is obtained, r i , θ i are polar coordinates on a plane, h i is a plane parameter such as flatness or end face runout at the corresponding coordinates, and t is time.

[0045] After the data is imported into the host computer, the three-dimensional surface topography of the to-be-detected circular saw blade can be obtained. The obtained function is compared with the corresponding national standards such as flatness and end face runout. When the parameter h i exceeds the allowable value, a mark is made on the corresponding position on the three-dimensional image, which is considered unqualified.

[0046] For the three-dimensional image obtained by cutting the double lateral vibration transverse detection, due to the lack of corresponding national standards, it is necessary to coincide with the measured static parameters such as end face runout and flatness, and the maximum cutting seam thickness under the corresponding processing condition is the upper limit value.

[0047] The principle of the detection system in this embodiment for detecting the end face runout of the detected substrate 1 is:

[0048] The laser displacement sensor 51 slides on the U-shaped slide rail, and the circular saw blade is driven to rotate by the main shaft motor 2. In this process, the laser displacement sensor 51 is set to a high sampling frequency, and the circular saw blade rotates one revolution, and the laser displacement sensor 51 moves one unit of measurement accuracy along the direction of the U-shaped slide rail 514. Through high-frequency sampling points, the end face runout of the circular saw blade substrate surface under each radius distribution can be obtained.

[0049] Then, through coordinate superposition, the three-dimensional surface topography of the circular saw blade is drawn, and the overall end face runout tolerance is obtained. Then, according to the national standard of the end face runout of the circular saw blade, the position of the circular saw blade surface topography that is not suitable is marked, and the efficient and intelligent detection of the end face runout of the circular saw blade is realized.

[0050] The principle of detecting the flatness of the detected substrate 1 is:

[0051] The circular saw blade is driven to rotate by the driving main shaft 2, and the number of revolutions of the circular saw blade is collected by the encoder. The circular saw blade rotates at a slow speed (generally below 20 r / min), and the laser displacement sensor 51 moves along the U-shaped slide rail, so that the measurement track covers the entire plane of the circular saw blade substrate. Figure 6 As shown in the schematic view, the fitting straight line of each up-down deviation curve in the radial direction of the circular saw blade is calculated by the computer in three-dimensional mode, and the slope of the fitting straight line obtained by combining the deviation curve is optimized to zero, which is used to offset the straightness error of the driving main shaft axis.

[0052] All the calculated and processed fitting straight lines are combined into a new circular surface. At this time, the overall up-down deviation surface obtained is the flatness of the measured saw blade.

[0053] The principle of detecting the lateral vibration of the detected substrate 1 is:

[0054] The circular saw blade is driven to work at a high speed by the driving main shaft 2, and the material to be cut is fed to the circular saw blade by the lifting feeding table. The laser displacement sensor 51 moves along the U-shaped slide rail 514 to measure the lateral vibration of the circular saw blade at different radius distributions, and when one side detection is completed, the laser displacement sensor 51 will move to the other side along the U-shaped slide rail 514 to repeat the detection steps.

[0055] For the three-dimensional images obtained from the transverse vibration detection of both sides during cutting, due to the lack of corresponding national standards, it is necessary to compare them with the measured static parameters such as end face runout and flatness to identify the factors affecting the dynamic stability of the circular saw blade during processing. By comparing the transverse vibration of each side, the deformation of the circular saw blade substrate at the corresponding rotation speed can be detected, providing some guidance for the processing and production of circular saw blades. It can also be used to detect and compare the deformation resistance of substrates made of different materials under high-speed rotation vibration.

[0056] Example 2:

[0057] This embodiment provides a fully automated method for detecting the static and dynamic characteristics of a substrate. Using the detection system described in Embodiment 1, the detection process is as follows: a laser displacement sensor 51 slides on a U-shaped slide rail 514, sequentially passing through a first detection position 511, a second detection position 512, and a third detection position 513. The circular saw blade rotates via the drive spindle 2. During this process, the laser displacement sensor 51 is set to a high sampling frequency. By sampling at high frequencies, the approximate three-dimensional contour of the circular saw blade surface can be obtained. The sampling frequency corresponds to the rotational speed, typically taking a lateral jump of one point every few milliseconds.

[0058] Then, the displacement value (X0, Y0) detected by the laser displacement sensor 51 is converted to (X′0, Y′0) using the following coordinate system:

[0059]

[0060] Where θ represents the rotation angle; after coordinate transformation, as shown... Figure 6 As shown, the three-dimensional surface morphology of the circular saw blade is drawn. Then, the three-dimensional solid of the circular saw blade is obtained according to the fitting algorithm. Finally, the unsuitable positions of the static and dynamic characteristics of the circular saw blade are marked according to the national standard for the flatness of the circular saw blade, so as to realize the efficient and intelligent detection of the circular saw blade.

[0061] In addition, such as Figures 3-5 As shown, the U-shaped slide rail 514 can move on the horizontal linear slide rail 43, which ensures that the moving displacement of the laser sensor 51 measuring device coincides with the radial direction of the circular saw blade, so as to measure the relevant parameters of the circular saw blade.

[0062] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A full-automatic detection system for static and dynamic characteristics of a substrate, characterized in that, Including U-shaped slide rail, the U-shaped slide rail is installed in horizontal linear motion module, the open end of U-shaped slide rail faces the base body to be detected; The laser displacement sensor is slidably connected to the U-shaped slide rail, and the laser displacement sensor changes position during the rotation of the base body to be detected to obtain a plurality of sampling points; The laser displacement sensor is driven by a guide rail motor to move along the U-shaped slide rail, and the base body to be detected is installed on a driving spindle connected to a spindle motor; The guide rail motor and the spindle motor are respectively connected to a control system; The horizontal linear motion module includes a horizontal sliding table and a horizontal linear slide rail, and the horizontal sliding table is slidably connected to the upper side of the horizontal linear slide rail; The U-shaped slide rail is installed on the horizontal sliding table, and the horizontal sliding table is connected to a driving mechanism, and the driving mechanism is connected to a control system; A full-automatic detection method for static and dynamic characteristics of a base body, in which a laser displacement sensor moves along a U-shaped slide rail during the rotation of the base body to be detected, and sequentially passes through a plurality of detection positions; The laser displacement sensor obtains the three-dimensional profile of the base body to be detected through high-frequency sampling points; After coordinate conversion and data fitting, the three-dimensional entity of the base body to be detected is obtained; According to the flatness standard mark of the base body to be detected, the position of the static and dynamic characteristics is marked; The laser displacement sensor moves one unit of measurement accuracy along the direction of the U-shaped slide rail every rotation of the base body to be detected; Through high-frequency sampling points, the end face runout of the base body to be detected under the distribution of each radius of the surface is obtained; Through coordinate superposition, the three-dimensional surface topography of the base body to be detected is drawn, and the overall end face runout tolerance is obtained; The base body to be detected rotates slowly while the laser displacement sensor moves along the U-shaped slide rail; The computer calculates the fitting straight line of each up-down deviation curve in the radial direction of the base body to be detected in three-dimensional mode; And the slope of the fitting straight line combined with the deviation curve is optimized to zero, which is used to offset the straightness error of the driving spindle axis; All the calculated and processed fitting straight lines are combined into a new circular surface, and the overall up-down deviation surface obtained at this time is the flatness of the base body to be detected; The principle of the detection system for detecting the end face runout of the base body to be detected is as follows: The laser displacement sensor slides on the U-shaped slide rail, and the circular saw blade is driven to rotate by the spindle motor; In this process, the laser displacement sensor is set to a high sampling frequency, the laser displacement sensor moves one unit of measurement accuracy along the direction of the U-shaped slide rail every rotation of the circular saw blade, and the end face runout of the base body to be detected under the distribution of each radius of the surface is obtained through high-frequency sampling points; Then, through coordinate superposition, the three-dimensional surface topography of the circular saw blade is drawn, and the overall end face runout tolerance is obtained, and the position of the surface topography of the circular saw blade that is not suitable is marked according to the national standard of the end face runout of the circular saw blade, realizing the efficient and intelligent detection of the end face runout of the circular saw blade; The principle of detecting the flatness of the base body to be detected is as follows: The driving main shaft drives the circular saw blade to rotate, and the rotation number of the circular saw blade is collected by the encoder. The circular saw blade rotates at a slow speed of 20 r / min or below, and the laser displacement sensor moves along the U-shaped slide rail, so that the measurement track covers the entire plane of the circular saw blade base. In the three-dimensional mode, the computer calculates the fitting straight line of each up-down deviation curve in the radial direction of the circular saw blade, and optimizes the slope of the fitting straight line combined with the deviation curve to zero, which is used to offset the straightness error of the driving main shaft axis; All the calculated and processed fitting straight lines are combined into a new circular surface. The overall up-down deviation surface obtained at this time is the flatness of the measured saw blade. The principle of detecting the transverse vibration of the detected base is: The driving main shaft drives the circular saw blade to work at a high speed, and the lifting feeding table feeds the material to be cut to the circular saw blade. The laser displacement sensor moves along the U-shaped slide rail to measure the transverse vibration of the circular saw blade at different radii. When one side detection is completed, the laser displacement sensor will move to the other side along the U-shaped slide rail, and the detection steps will be repeated. For the three-dimensional image obtained by the transverse detection of the double-face transverse vibration during cutting, since there is no corresponding national standard, it is necessary to coincide and compare with the measured static parameters, including end face run-out and flatness, to find out the factors affecting the dynamic stability of the circular saw blade during processing, and to detect the deformation of the circular saw blade base at the corresponding speed by comparing the transverse vibrations of the two sides. Some guidance is proposed for the processing and production of the circular saw blade, and the anti-deformation ability of the base under high-speed rotation can also be detected and compared under different materials.

2. The full-automatic system for detecting static and dynamic characteristics of a substrate according to claim 1, characterized in that, The detection head of the laser displacement sensor faces the surface of the detected base, which is used to collect the radial parameters of the detected base.

3. The full-automatic system for detecting static and dynamic characteristics of a substrate according to claim 2, characterized in that, The main shaft motor advances one detection unit every time the laser displacement sensor completes the radial parameter collection of the detected base.

4. The full-automatic system for detecting static and dynamic characteristics of a substrate according to claim 1, wherein The driving main shaft is installed with an encoder, and the encoder is connected to the control system.

5. The full-automatic system for detecting static and dynamic characteristics of a substrate according to claim 1, wherein The horizontal linear motion module is installed on the rack, and the direction of the horizontal linear motion module is perpendicular to the axial direction of the driving main shaft.

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