System and method for automatically planning and positioning hardness measurement blocks through structured documents

Abstract

The present invention provides a system and method for automatically planning and positioning a hardness block for measurement using a structured document. The system comprises a circular hardness block and an automatic planning and positioning system. The automatic planning and positioning system comprises a positioning platform at the bottom, an axially movable platform disposed on the positioning platform, a rotating mechanism disposed on the axially movable platform, an annular fixing mechanism fixed to the rotating mechanism, a host computer, and a structured information acquisition interface. The circular hardness block is also provided with a memory that stores the position information of all measurement points within its effective measurement area in the form of a structured electronic document. The present invention uses a polar coordinate mode to drive the circular hardness block to measure along a specified path. The n test points taken are distributed in an outwardly diverging spiral shape, more reasonably characterizing the hardness values of different areas of the hardness block, and automatically tracking to the nearest effective measurement area, thereby minimizing waste of the effective measurement area and optimizing the hardness block usage area.

Description

Technical Field

[0001] The present invention relates to a method for measuring a hardness block, and in particular discloses a system and method for automatically planning and positioning a hardness block for measurement through structured documents, so that hardness measurement points are automatically planned to be uniformly distributed for collection and measurement. The collected test points are distributed in different areas of the hardness block, so that the hardness values of different areas of the hardness block are more reasonably characterized, the strength performance of different areas is characterized, and the accuracy of judging the hardness value of the hardness block based on the measurement results is improved. The system is suitable for verifying the uniformity and stability of the hardness block when calibrating the hardness block in the metrology and testing industry. Background Art

[0002] The hardness of a metal material refers to its mechanical property of resisting an applied load through permanent plastic deformation. A large number of enterprises, institutions, universities, and research institutes generally use hardness testers for measurement. This involves applying a specific shape of indenter to the specimen surface under a specified load. After a period of unloading, the permanent plastic deformation left on the specimen surface is used to characterize the material's strength. Depending on the hardness standard, hardness tests can be basically divided into indentation depth measurement and indentation area measurement. Regardless of the test method used, in order to ensure accurate and reliable hardness measurement results, the hardness tester needs to be recalibrated using a standard hardness block after a period of use. Therefore, the accuracy and stability of the hardness value of the standard hardness block is very important.

[0003] Taking Rockwell hardness as an example, both the European standard ISO 6508-4 and the American standard ASTM-E18 state that the calibration of Rockwell hardness blocks should involve the even selection of at least five test points. my country's national standard GB / T230.3 stipulates the basic requirements for standard Rockwell hardness blocks. JJG 113, "Verification Procedure for Standard Metal Rockwell Hardness Blocks," requires six indentations, with the first indentation ignored, to ensure that at least five measurement points are evenly distributed. In conventional metrology, evenly distributed measurement points are generally selected based on the engineer's experience. This significantly impacts the calibration and verification of the hardness block due to human factors, and it is impossible to record the location of the test area, conduct regional stability testing, or obtain the actual distribution of hardness values across the entire hardness block. Furthermore, after multiple measurements, the surface of the hardness block is densely populated with measurement points, making it difficult to find and locate the measurement points that meet the requirements, resulting in low efficiency. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the randomly collected test points during the hardness block measurement process cannot accurately reflect the regional distribution of the hardness value. A system and method are designed to automatically plan and locate the hardness block measurement through structured documents. The system and method can achieve uniform distribution of the test points on the radius through automatic and accurate positioning. The system can collect and reproduce multiple times, and can adapt to a variety of hardness blocks. Hardness tests can be performed on hardness blocks of various hardness types by tracking and tracing, thereby realizing automatic and uniform collection of hardness values and making up for the shortcomings of the data collection method in the existing manual measurement.

[0005] The present invention is implemented as follows: a method for automatically planning and positioning a hardness block for measuring through structured documents, characterized in that: it includes a circular hardness block and an automatic planning and positioning system, the automatic planning and positioning system includes a positioning platform located at the bottom, an axially movable platform provided on the positioning platform, a rotating mechanism provided on the axially movable platform, an annular fixing mechanism fixed on the rotating mechanism, a plurality of fixing rods penetrating the annular wall of the fixing mechanism and threadedly connected to the annular wall of the fixing mechanism, a host, a structured information acquisition interface provided on the host control panel and connected to the host circuit, a plurality of control buttons and indicator lights, the host is also connected to a data input device, and is respectively circuit-connected to the axially movable platform and the rotating mechanism, the circular hardness block is fixed to the fixing mechanism by tightening the plurality of fixing rods penetrating the annular wall of the fixing mechanism At the center of the ring, the circular hardness block is equipped with a memory that stores the position information of all measurement points in the effective measurement area of the circular hardness block in the form of a structured electronic document. The corresponding data information is read by the structured information acquisition interface. Each sheet in the structured electronic document records the position information of all measurement points in the corresponding effective measurement area. The recording method is: the effective measurement area of the hardness block is divided into n equal parts according to the area of the effective measurement area to form n annular effective measurement areas, where n is the number of effective test points to be obtained for each measurement. The continuous measurement points on each annular effective measurement area are the same group and are marked with different angles. In each group, the group of cells that record the radius, angle, time and hardness values in four columns of cells in the same row from left to right is the recorded data of the same measurement point.

[0006] The specific steps of the method for automatically planning and positioning a hardness measurement block through a structured electronic document are as follows:

[0007] S1. Install the positioning platform on the hardness tester and keep it in the same position every time;

[0008] S2. Position the circular hardness block to be tested at the center of the fixing mechanism through the fixing rod. At this time, the initial radius: BJ0=0, the initial angle: JD0=0;

[0009] S3. Connect the storage of the structured electronic document corresponding to the circular hardness block to be tested to the structured information acquisition interface, and the host reads the data in the structured electronic document. i represents the current document sheet and is initially 1.

[0010] S4. Press the corresponding operation button, start measurement according to the indicator light prompt, and set the first measurement mark to true;

[0011] S5. Press the corresponding operation button, the indicator light prompts to enter the measurement state and start positioning;

[0012] S6. Get the position information of the first test point: start reading from the first two columns of the first row of the first sheet, which are BJ (1, 1, i) and JD (1, 2, i). BJ is the radius value corresponding to the current measurement point, and JD is the angle value corresponding to the current measurement point. At the same time, read the data in the time cell and the hardness value cell. If the corresponding time cell and hardness value cell are empty and there is no data, then take the current measurement point as the test point. The host sends the (BJ- BJ0) difference data to the axial moving platform, so that its axial movement distance is (BJ- BJ0). The host sends the (JD- JD0) difference data to the rotating mechanism, so that it rotates counterclockwise by an angle (JD- JD0), and locates this test point to the hardness tester measurement position. If there is data recorded in the time cell and the hardness value cell in the first two columns of the first row, it means that all valid measurement points on this hardness block have been used, and a new hardness block needs to be replaced and the operation starts again from step S2.

[0013] S7, using a hardness tester to press the hardness block to measure and obtain the hardness value measurement result of the first test point;

[0014] S8. Input the hardness tester hardness value measurement result to the host through the data input device. The host writes the measurement time into the time recording cell corresponding to the test point and the measured hardness value result into the corresponding hardness value cell. At this point, the radius, angle, time and hardness values in the cell group corresponding to this test point have corresponding numerical records. The host cuts the data in this row to the last row of the current table for storage.

[0015] S9, the host sends the difference data between the radius value corresponding to the current test point and the initial radius of the initial center position to the axial moving platform, so that the axial moving distance is -BJ, and the hardness block returns to the initial center position;

[0016] S10, the host drives the measurement indicator light to prompt that the measurement work of this test point is completed;

[0017] S11. Starting from the first two columns of the first row of the next sheet, determine the next test point in the adjacent next valid measurement area in the same manner as steps S6-S10, and so on, until a useful test point is obtained in each of the n annular valid measurement areas corresponding to n sheets, and the n test points are located at different radii and angles on the surface of the hardness block. After the measurement of each point is completed, the measurement of this hardness block is completed.

[0018] The structured electronic document uses the unique identifier of the hardness block as the file name. The file name corresponds to the hardness block one-to-one. It is initialized to n sheets, where n is the number of valid test points to be obtained for each measurement. Each sheet corresponds to a valid measurement area. Each hardness block has a radius of R, an invalid boundary inner radius of R0, an invalid boundary outer radius of w, an indentation radius of r, and an effective gap L for indentation distinction. The units of distance dimensions and other factors are consistent. Then:

[0019] The effective measuring area inside the hardness block is: ,

[0020] Divide the effective measurement area into n equal parts to form n annular effective measurement areas. The area of each annular effective measurement area is: ,

[0021] The radius of each annular effective measurement area is: ,

[0022] Each sheet in the structured electronic document records the position information of all measurement points in the corresponding effective measurement area, where the radius and angle represent the measurement position of the measurement point, the time cell is used to record the measurement time, and the hardness value cell is used to record the hardness value measurement result. There are n groups of measurement point data information records for n annular effective measurement areas, and the measurement points on adjacent annular effective measurement areas are recorded in adjacent sheets. The starting point angles recorded in adjacent sheets differ by 360 / n°.

[0023] The n sheets in the structured electronic document sequentially record the position information of all available measurement points in the corresponding valid measurement area. Each measurement point is read in the form of ring number X, circle number Y within the ring, and point number Z within the circle. The X value is incremented in the order of 1, 2, 3, ... n natural numbers; the Y value is incremented in the order of 1, 2, 3, ... natural numbers until the calculated value does not meet the requirements and the increment stops; the Z value is incremented in the order of 1, 2, 3, ... natural numbers until the calculated value does not meet the requirements and the increment stops. In the structured electronic document, the corresponding values are incremented item by item in the order of Z, Y, X, and the preset values that meet the requirements are retained. The positions of all measurement points are preset, and the host completes the automatic planning of the valid measurement points on the surface of the hardness block, and all the position information of all available measurement points on the hardness block is entered into the n sheets corresponding to the structured electronic document.

[0024] The radius and angle at the measurement point (X, Y, Z) are calculated as follows:

[0025] The radius at the measurement point (X, Y, Z), denoted as R X,Y :

[0026] ,

[0027] The angle at the measurement point (X, Y, Z), denoted as A X,Y,Z :

[0028] ,

[0029] The initial values of X, Y, and Z are all 1.

[0030] At the same time, When , Z stops increasing, Z is reset to the initial value, and Y increases;

[0031] exist When , Y stops increasing, Y is reset to the initial value, and X increases;

[0032] When X>n-1, X stops increasing, and all R with the same value of X in the structured electronic document are X,Y , A X,Y,Z Data column, starting with A X,Y,Z As the main keyword, R X,Y Arrange the secondary keywords in ascending order and write them into the rows of the first two columns of page X.

[0033] An automatic planning and positioning system for the method of automatically planning and positioning a hardness block for measuring a hardness block through structured documents, characterized in that: the automatic planning and positioning system includes a positioning platform at the bottom, an axially movable platform provided on the positioning platform, a rotating mechanism provided on the axially movable platform, an annular fixing mechanism fixed on the rotating mechanism, a plurality of fixing rods penetrating the annular wall of the fixing mechanism and threadedly connected to the annular wall of the fixing mechanism, a host, a structured information acquisition interface provided on the host control panel and connected to the host circuit, a preparation button, a preparation indicator light, a measurement button and a measurement indicator light, the host is also connected to a data input device, and the data input device includes Input devices such as a keyboard and touch screen are provided. The host is electrically connected to the axially movable platform and the rotating mechanism. The circular hardness block to be tested is fixed to the center of the ring of the fixing mechanism by tightening a plurality of fixing rods penetrating the ring wall of the fixing mechanism to press against the outer wall of the circular hardness block. The circular hardness block is equipped with a memory that stores the position information of all measurement points within the effective measurement area of the circular hardness block in the form of a structured electronic document, with the measurement point positions represented by radius and angle cells, the measurement time recorded in time cells, and the hardness measurement results recorded in hardness value cells. The structured information acquisition interface is used to connect to the memory storing the structured electronic document. The upper and lower surfaces of the positioning platform are parallel and are always placed in the same position on the hardness tester. The axial movable device is fixedly connected to the positioning device. The upper and lower surfaces of the axial movable device are parallel. The axial movable device moves horizontally forward and backward along the axial direction. Its movement track is parallel to the upper and lower surfaces. The angle of subsequent measurement points is based on the positive direction of axial movement. The rotating mechanism is fixedly connected to the axial movable device. The upper and lower surfaces of the rotating mechanism are parallel, and its rotation axis is perpendicular to the upper and lower surfaces.

[0034] The ready button is used to control the start and stop of the host, the ready indicator light is used to indicate the standby state of the host, the measuring button is used to control the action and stop of the host, and the measuring indicator light is used to indicate the in-place state of the host.

[0035] In order to achieve uniform distribution of test points on the hardness block during collection and measurement, the method of the present invention selects test points in the collection process in a spiral distribution that diverges outward in different areas of the hardness block, which can more reasonably characterize the hardness values of different areas of the hardness block, and store the collected data and indentation positions in the form of electronic documents as a record of this sampling and a preset position for the next sampling.

[0036] The beneficial effects of the present invention are as follows: the present invention adopts the polar coordinate mode to drive the hardness block to measure along the prescribed path, which can ensure that the test points of the hardness block in each measurement are in different areas of the hardness block, and can basically achieve uniform distribution of angles and radii in the measurement process of n points, and its average value can more effectively reflect the hardness value, and the measurement system can also track the position of the previous measurement and record the hardness values obtained by measuring at different positions, so as to achieve more effective measurement and judgment of regional stability, and can also automatically track to the nearest effective measurement area according to the planned measurement path, so as to minimize the waste of the effective measurement area and achieve the optimization of the hardness block usage area. The method of the present invention can improve the utilization rate of the hardness block surface, realize rapid positioning of the measurement position to improve efficiency, judge the accuracy of the hardness value of the hardness block based on the measurement results, characterize the strength performance of different areas, and is suitable for the metrology and testing industry to verify the uniformity and stability of the hardness block when calibrating it, and can be used by the hardness block production unit to improve the process and research and development based on the long-term data of the entire surface of the hardness block. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the main structures of the hardness block and the automatic planning and positioning system in the present invention.

[0038] Figure 2 It is a schematic diagram of the calculation process of preset data for each measuring point in the present invention.

[0039] Figure 3 Schematic diagram of the principle of the method for automatic planning and positioning according to embodiment 1 of the present invention.

[0040] In the figure: 1. Positioning platform; 2. Axial moving platform; 3. Rotating mechanism; 4. Fixing mechanism; 5. Fixing rod; 6. Circular hardness block; 7. Main unit; 8. Structured information acquisition interface; 9. Ready button; 10. Ready indicator light; 11. Measurement button; 12. Measurement indicator light. DETAILED DESCRIPTION

[0041] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0042] According to the attached Figure 1The present invention provides a system and method for automatically planning and positioning a hardness block for measurement using a structured document. The system comprises a circular hardness block 6 and an automatic planning and positioning system. The automatic planning and positioning system includes a positioning platform 1 located at the bottom, an axially movable platform 2 disposed on the positioning platform 1, a rotating mechanism 3 disposed on the axially movable platform 2, an annular fixing mechanism 4 fixed to the rotating mechanism 3, a plurality of fixing rods 5 penetrating the annular wall of the fixing mechanism 4 and threadedly connected to the annular wall of the fixing mechanism 4, a host computer 7, a structured information acquisition interface 8 disposed on the control panel of the host computer 7 and electrically connected to the host computer, a ready button 9, a ready indicator light 10, a measurement button 11, and a measurement indicator light 12. The host computer 7 is also connected to a data input device, including an input device such as a keyboard and a touch input screen. The host computer 7 is electrically connected to the axially movable platform 2 and the rotating mechanism 3. The ready button 9 is used to control the start and stop of the host computer 7, and the ready indicator light 10 is used to indicate the host computer's standby state. The measurement button 11 is used to control the movement and stop of the host computer 7, and the measurement indicator light 12 is used to indicate the host computer's position.

[0043] The circular hardness block 6 is placed at the center of the fixing mechanism 4 ring, and the position of the circular hardness block 6 is fixed by tightening several fixing rods 5 that penetrate the ring wall of the fixing mechanism 4 to press against the outer wall of the circular hardness block 6.

[0044] The positioning platform 1 has parallel upper and lower surfaces and is positioned consistently on the durometer. An axial movement device 2 is fixedly connected to the positioning device 1. Its upper and lower surfaces are parallel, allowing for horizontal forward and backward axial movement. Its movement path is parallel to the upper and lower surfaces, and the angle of subsequent measurement points is based on the positive direction of axial movement. A rotating mechanism 3 is fixedly connected to the axial movement device 2. Its upper and lower surfaces are parallel, and its rotation axis is perpendicular to the upper and lower surfaces.

[0045] This invention uses polar coordinates to drive a hardness test block along a specified path, recording the measurement time and results at the current test point, enabling automatic positioning and recording of the hardness test block. By using a designed structured electronic document and host-controlled path measurement, a uniform distribution of angles and radii can be achieved across n-point measurements.

[0046] During measurement, the automatic planning and positioning system automatically plans and positions the hardness block through a structured electronic document. The structured electronic document is that each hardness block is initially matched with a memory that stores corresponding initialization data information in the form of a structured electronic document. The initialization data information includes the measurement position, measurement time and measurement results. The radius and angle cells represent the measurement position, the time cell records the measurement time and the hardness value cell records the measurement results. The structured information acquisition interface 8 is used to connect to the memory that stores the structured electronic document.

[0047] The structured electronic document (using an Excel file as an example) preferably uses the unique identifier of the hardness block, such as the block number, as its file name. This ensures a one-to-one correspondence between the file name and the hardness block, facilitating identification during measurement. The structured electronic document is initialized with n sheets, where n is the number of valid test points to be acquired during each measurement. Each sheet corresponds to a valid measurement area.

[0048] Each hardness block has a radius of R, an inner radius of the invalid boundary of R0, an outer radius of the invalid boundary of w, an indentation radius of r, and an effective gap L for indentation distinction. The units of distance dimensions and other factors are the same, then:

[0049] The effective measuring area inside the hardness block is: ,

[0050] Divide the effective measurement area into n equal parts to form n annular effective measurement areas. The area of each annular effective measurement area is: ,

[0051] The radius of each annular effective measurement area is: ,

[0052] According to the attached Figure 2 and attached Figure 3 Each sheet in the structured electronic document records the location information of all available measurement points in the corresponding effective measurement area. The recording method is as follows: the effective measurement area of the hardness block is divided into n equal parts according to the effective measurement area area, forming n annular effective measurement areas. The continuous measurement points on each annular effective measurement area are the same group and are marked at different angles. In each group, the four columns of cells in the same row from left to right record the radius, angle, time, and hardness value of the same measurement point. The radius and angle represent the measurement position of the measurement point, the time cell is used to record the measurement time, and the hardness value cell is used to record the hardness value measurement result. The n annular effective measurement areas thus obtain n groups of measurement point data information records. The measurement points on adjacent annular effective measurement areas are recorded in adjacent sheets, and the starting point angles of the adjacent sheets differ by 360 / n°.

[0053] During initialization, assume that X represents the ring number, Y represents the number of circles within the ring, and Z represents the number of points within the circle. X values are incremented in the natural number sequence of 1, 2, 3, ...n; Y values are incremented in the natural number sequence of 1, 2, 3, ...n until the calculated value does not meet the requirements, at which point the increment stops; and Z values are incremented in the natural number sequence of 1, 2, 3, ...n until the calculated value does not meet the requirements, at which point the increment stops.

[0054] Therefore, the n sheets in the structured electronic document respectively record the position information of all the measuring points in the corresponding valid measurement area in sequence, and each measuring point is read in the form of (ring number X, number of circles in the ring Y and number of points in the circle Z).

[0055] The radius and angle at the measurement point (X, Y, Z) are calculated as follows:

[0056] The radius at the measurement point (X, Y, Z), denoted as R X,Y, :

[0057] ,

[0058] The angle at the measurement point (X, Y, Z), denoted as A X,Y,Z :

[0059] ,

[0060] The initial values of X, Y, and Z are all 1.

[0061] According to the attached Figure 2 ,if , Z stops increasing, Z is reset to the initial value, and Y increases; if , Y stops increasing, Y is reset to the initial value, and X increases; if X>n-1, X stops increasing.

[0062] Increment the corresponding values one by one in the order of Z, Y, and X, retain the preset values that meet the requirements, and preset the positions of all measurement points. X,Y , A X,Y,Z Data column, starting with A X,Y,Z As the main keyword, R X,Y Arrange the secondary keywords in ascending order and write them into the rows of the first two columns of page X.

[0063] The host computer automatically plans the effective measurement points on the surface of the hardness block and enters all the position information of all the measurement points on the hardness block into the corresponding n sheets of the structured electronic document. Example

[0064] According to the attached Figure 3 According to the current domestic and international measurement regulations, 5 test points are usually taken, that is, n=5, and 5 sheets are set accordingly. The 5 effective measurement areas evenly divided on the hardness block form 5 annular effective measurement areas with different radii. The area of each annular effective measurement area is: .

[0065] The specific steps of automatically planning and positioning the hardness block using the method of the present invention through structured electronic documents are as follows:

[0066] 1. Install the positioning platform 1 on the hardness tester and keep it in the same position each time.

[0067] 2. Place the circular hardness block 6 to be tested inside the annular fixing mechanism 4 and position it at the center of the fixing mechanism 4 through the fixing rod 5. At this time, the initial radius: BJ0=0, the initial angle: JD0=0.

[0068] 3. Connect the storage of the structured electronic document corresponding to the circular hardness block 6 to be tested to the structured information acquisition interface 8, and the host 7 reads the data in the structured electronic document. i represents the current document sheet and is initially 1.

[0069] 4. Press the ready button 9 until the ready indicator 10 turns green, indicating that the measurement can begin. Set the first measurement flag to true.

[0070] 5. Press the measurement button 11, and the host 7 drives the measurement indicator light 12 to display a yellow light, prompting the user to enter the measurement state and start positioning.

[0071] 6. Obtain the location information of the first test point: Start reading the data from the first two columns of the first row of the first sheet, which are BJ (1, 1, i) and JD (1, 2, i). BJ is the radius value corresponding to the current measurement point, and JD is the angle value corresponding to the current measurement point. The data in the time cell and hardness value cell are also read. If the corresponding time cell and hardness value cell are empty, the current measurement point is used as the test point. The host 7 sends the difference data (BJ - BJ0) to the axial moving platform 2, causing it to move axially a distance (BJ - BJ0). The host 7 sends the difference data (JD - JD0) to the rotating mechanism 3, causing it to rotate counterclockwise by an angle (JD - JD0), positioning the test point at the hardness tester measurement location. If data is already recorded in the time cell and hardness value cell, it indicates that all valid measurement points on the hardness block have been used. A new hardness block needs to be replaced and the operation should be restarted from step 2.

[0072] 7. Use a hardness tester to press the hardness block to measure and obtain the hardness value measurement result of the first test point.

[0073] 8. Input the hardness tester hardness measurement result to host computer 7 via the data input device. Host computer 7 writes the measurement time into the time cell corresponding to the test point and the measured hardness value into the corresponding hardness value cell. At this point, the corresponding cell group for radius, angle, time, and hardness values for this test point already has corresponding values. To facilitate future use, host computer 7 cuts the data in this row to the last row of the table for storage, leaving the time and hardness value cell for the first measurement point in the first row of the table empty until all measurement points in the table have corresponding values for radius, angle, time, and hardness.

[0074] 9. The host 7 sends the difference data between the radius value corresponding to the current test point and the initial radius value of the initial center position to the axial moving platform 2, so that its axial movement distance is -BJ, and the hardness block returns to the initial center position.

[0075] 10. The host 7 drives the measurement indicator light 12 to display a green light, indicating that the measurement work of this test point is completed.

[0076] 11. Starting from the first two columns of the first row of the next sheet, determine the next test point in the adjacent next valid measurement area in the same manner as steps 6-10, and so on, until a useful test point is obtained in each of the five annular valid measurement areas corresponding to the five sheets, and the five test points are located at different radii and angles on the surface of the hardness block. After completing the measurement of each point, the measurement of this hardness block is completed.

[0077] The host computer 7 uses the above-mentioned data reading method to determine five test points located in different annular effective measurement areas on the circular hardness block 6 in five sheets. Since the five test points are located in different annular effective measurement areas, the radius and angle of the test points are different. The test points finally determined will be distributed in an outward-diverging spiral shape, which can more reasonably characterize the hardness values of different areas of the hardness block. The host computer 7 automatically tracks to the nearest effective measurement area, minimizing the waste of the effective measurement area and optimizing the use area of the hardness block.

Claims

1. A method for automatically planning and positioning a hardness measurement block through a structured document, characterized in that: It includes a circular hardness block and an automatic planning and positioning system, the automatic planning and positioning system includes a positioning platform at the bottom, an axially movable platform arranged on the positioning platform, a rotating mechanism arranged on the axially movable platform, an annular fixing mechanism fixed on the rotating mechanism, a plurality of fixing rods penetrating the annular wall of the fixing mechanism and threadedly connected to the annular wall of the fixing mechanism, a host, a structured information acquisition interface arranged on the host control panel and connected to the host circuit, a plurality of control buttons and indicator lights, the host is also connected to a data input device, and is circuit-connected to the axially movable platform and the rotating mechanism respectively, the circular hardness block is fixed to the center position of the fixing mechanism ring by tightening the plurality of fixing rods penetrating the annular wall of the fixing mechanism, the circular hardness block is configured with a storage device that stores the position information of all measurement points in the effective measurement area of the circular hardness block in the form of a structured electronic document The storage device reads the corresponding data information by the structured information acquisition interface, and each sheet in the structured electronic document records the position information of all measurement points in the corresponding effective measurement area. The recording method is: the effective measurement area of the hardness block is divided into n equal parts according to the area of the effective measurement area to form n annular effective measurement areas, n is the number of effective test points to be obtained for each measurement, and the continuous measurement points on each annular effective measurement area are the same group and are marked with different angles. There are n groups of measurement point data information records for the n annular effective measurement areas. In each group, the four columns of cells in the same row from left to right are used to record the radius, angle, time and hardness value of the cell group as the record data of the same measurement point. The measurement points on adjacent annular effective measurement areas are recorded in adjacent sheets, and the starting point angles of the adjacent sheets differ by 360 / n°. The specific steps of the method for automatically planning and positioning a hardness measurement block through a structured electronic document are as follows: S1. Install the positioning platform on the hardness tester and keep it in the same position every time; S2. Position the circular hardness block to be tested at the center of the fixing mechanism through the fixing rod. At this time, the initial radius: BJ0=0, the initial angle: JD0=0; S3. Connect the storage of the structured electronic document corresponding to the circular hardness block to be tested to the structured information acquisition interface, and the host reads the data in the structured electronic document. i represents the current document sheet and is initially 1. S4. Press the corresponding operation button, start measurement according to the indicator light prompt, and set the first measurement mark to true; S5. Press the corresponding operation button, the indicator light prompts to enter the measurement state and start positioning; S6. Get the position information of the first test point: start reading from the first two columns of the first row of the first sheet, which are BJ (1, 1, i) and JD (1, 2, i). BJ is the radius value corresponding to the current measurement point, and JD is the angle value corresponding to the current measurement point. At the same time, read the data in the time cell and hardness value cell. If the corresponding time cell and hardness value cell are empty, the current measurement point is taken as the test point. The host sends the (BJ- BJ0) difference data to the axial moving platform, making its axial movement distance (BJ- BJ0). The host sends the (JD- JD0) difference data to the rotating mechanism, making it rotate counterclockwise by an angle (JD- JD0), and locate this test point to the hardness tester measurement position. S7, using a hardness tester to press the hardness block to measure and obtain the hardness value measurement result of the first test point; S8. Input the hardness tester hardness value measurement result to the host through the data input device. The host writes the measurement time into the time recording cell corresponding to the test point and the measured hardness value result into the corresponding hardness value cell. At this point, the radius, angle, time and hardness values in the cell group corresponding to this test point have corresponding numerical records. The host cuts the data in this row to the last row of the current table for storage. S9, the host sends the difference data between the radius value corresponding to the current test point and the initial radius of the initial center position to the axial moving platform, so that the axial moving distance is -BJ, and the hardness block returns to the initial center position; S10, the host drives the measurement indicator light to prompt that the measurement work of this test point is completed; S11. Starting from the first two columns of the first row of the next sheet, determine the next test point in the adjacent next valid measurement area in the same manner as steps S6-S10, and so on, until a useful test point is obtained in each of the n annular valid measurement areas corresponding to n sheets, and the n test points are located at different radii and angles on the surface of the hardness block. After the measurement of each point is completed, the measurement of this hardness block is completed.

2. The method for automatically planning and positioning a hardness measurement block through structured documents according to claim 1, characterized in that: When obtaining the position information of the test points in step S6, if data is already recorded in the time cell and the hardness value cell in the first two columns of the first row, it means that all the valid measurement points on this hardness block have been used, and a new hardness block needs to be replaced and the operation should be restarted from step S2.

3. The method for automatically planning and positioning a hardness measurement block through structured documents according to claim 1, characterized in that: The structured electronic document uses the unique identifier of the hardness block as the file name. The file name corresponds to the hardness block one by one. It is initialized to n sheets, where n is the number of valid test points to be obtained for each measurement. Each sheet corresponds to a valid measurement area. Each hardness block has a radius of R, an invalid boundary inner radius of R0, an invalid boundary outer radius of w, an indentation radius of r, and an indentation distinguishing effective gap L. The distance dimension units are all consistent, then: The effective measuring area inside the hardness block is: , Divide the effective measurement area into n equal parts to form n annular effective measurement areas. The area of each annular effective measurement area is: , The radius of each annular effective measurement area is: , Where X is the number of rings, Each sheet in the structured electronic document records the position information of all measurement points corresponding to the effective measurement area, where the radius and angle represent the measurement position of the measurement point, the time cell is used to record the measurement time, and the hardness value cell is used to record the measurement result of the hardness value.

4. The method for automatically planning and positioning a hardness measurement block through structured documents according to claim 1, characterized in that: The n sheets in the structured electronic document sequentially record the position information of all available measurement points in the corresponding valid measurement area. Each measurement point is read in the form of ring number X, circle number Y within the ring, and point number Z within the circle. The X value is incremented in the order of 1, 2, 3, ... n natural numbers; the Y value is incremented in the order of 1, 2, 3, ... natural numbers until the calculated value does not meet the requirements and the increment stops; the Z value is incremented in the order of 1, 2, 3, ... natural numbers until the calculated value does not meet the requirements and the increment stops. In the structured electronic document, the corresponding values are incremented item by item in the order of Z, Y, X, and the preset values that meet the requirements are retained. The positions of all measurement points are preset, and the host completes the automatic planning of the valid measurement points on the surface of the hardness block, and all the position information of all available measurement points on the hardness block is entered into the n sheets corresponding to the structured electronic document.

5. The method for automatically planning and positioning a hardness measurement block through a structured document according to claim 4, characterized in that The radius and angle at the measurement point (X, Y, Z) are calculated as follows: The radius at the measurement point (X, Y, Z), denoted as R X,Y : ， The angle at the measurement point (X, Y, Z), denoted as A X,Y,Z : ， The initial values of X, Y, and Z are all 1, X is the number of rings, Y is the number of circles in the ring, Z is the number of points in the circle, r is the indentation radius, and L is the effective gap for indentation distinction. At the same time, When , Z stops increasing, Z is reset to the initial value, and Y increases; exist When , Y stops increasing, Y is reset to the initial value, and X increases; When X>n-1, X stops increasing, and all R with the same value of X in the structured electronic document are X,Y , A X,Y,Z Data column, starting with A X,Y,Z As the main keyword, R X,Y Arrange the secondary keywords in ascending order and write them into the rows of the first two columns of page X.

6. An automatic planning and positioning system for use in the method for automatically planning and positioning a hardness measurement block using a structured document according to any one of claims 1 to 5, characterized in that: The automatic planning and positioning system includes a positioning platform at the bottom, an axial movable platform arranged on the positioning platform, a rotating mechanism arranged on the axial movable platform, an annular fixing mechanism fixed on the rotating mechanism, a plurality of fixing rods penetrating the annular wall of the fixing mechanism and threadedly connected to the annular wall of the fixing mechanism, and a host, a structured information acquisition interface arranged on the host control panel and connected to the host circuit, a preparation button, a preparation indicator light, a measurement button and a measurement indicator light. The host is also connected to a data input device. The host is circuit-connected to the axial movable platform and the rotating mechanism respectively. The circular hardness block to be measured is fixed at the center position of the ring of the fixing mechanism. The circular hardness block is configured with a memory that stores the position information of all measurement points in the effective measurement area of the circular hardness block in the form of a structured electronic document, with radius and angle cells representing the measurement point position, time cells recording the measurement time, and hardness value cells recording the hardness value measurement results. The structured information acquisition interface is used to connect to the memory storing the structured electronic document.

7. The automatic planning and positioning system for the method of automatically planning and positioning a hardness measurement block through structured documents according to claim 6, characterized in that: The upper and lower surfaces of the positioning platform are parallel, and the same position is maintained on the hardness tester each time. The axial moving device is connected and fixed to the positioning device. The upper and lower surfaces of the axial moving device are parallel. It moves horizontally forward and backward along the axial direction. Its moving track is parallel to the upper and lower surfaces. The rotating mechanism is connected and fixed to the axial moving device. The upper and lower surfaces of the rotating mechanism are parallel, and its rotating axis is perpendicular to the upper and lower surfaces.

8. The automatic planning and positioning system for the method of automatically planning and positioning a hardness measurement block using a structured document according to claim 6, characterized in that: The ready button is used to control the start and stop of the host, the ready indicator light is used to indicate the standby state of the host, the measuring button is used to control the action and stop of the host, the measuring indicator light is used to indicate the position of the host, and the data input device includes a keyboard or a touch input screen.

9. The automatic planning and positioning system for the method of automatically planning and positioning a hardness measurement block using a structured document according to claim 6, characterized in that: The circular hardness block to be tested is fixed at the center position of the ring of the fixing mechanism by tightening a plurality of fixing rods penetrating the ring wall of the fixing mechanism to press against the outer side wall of the circular hardness block.

Images