Calibrating device for center point of Rockwell hardness tester

Abstract

The utility model discloses a Rockwell hardness tester center point calibration device, and belongs to the technical field of material hardness measurement, the technical scheme is characterized in that the Rockwell hardness tester center point calibration device comprises a sliding block, a connecting assembly and a calibration assembly, an objective table is provided with a sliding groove with an annular cross section, one end of the sliding block extends into the sliding groove and is in sliding connection with the objective table, and the other end of the sliding block extends into the connecting assembly; one end of the connecting assembly is connected with the sliding block, and the other end is connected with the calibration assembly; the calibration assembly comprises a mounting sleeve and a graduated scale, the mounting sleeve is connected with the connecting assembly, the graduated scale is horizontally arranged, the graduated scale is slidably connected with the mounting sleeve, and the graduated scale is not lower than the top of the objective table; the sample comprises a first edge and a second edge, the first edge and the second edge are arranged at an angle, and the calibrated scale can be used for respectively calibrating the distance between the mounting sleeve and the first edge and the distance between the mounting sleeve and the second edge, so that the calibration of the sample is realized, and the effect of more accurately finding a plurality of central points of the sample is achieved.

Description

Technical Field

[0001] This application relates to the technical field of material hardness measurement, and particularly to a center point calibration device for a Rockwell hardness tester. Background Art

[0002] The Rockwell hardness tester is an important tool for material hardness detection and is widely used in the hardness testing of materials with a certain hardness. During the testing process, aligning the center position of the sample with the hardness measurement head is crucial for ensuring the accuracy of the test results.

[0003] Currently, for samples that are non-standard and do not match the size of the loading platform of the Rockwell hardness tester, several center points need to be found for measurement and the average value is taken, which requires the operator to find the center points multiple times. However, in this process, the operator usually relies on past experience to observe and determine the center point of the sample, and this method is prone to deviation in the position of the found center point, thus affecting the accuracy of the hardness measurement results. Content of the Utility Model

[0004] In order to more accurately find several center points of the sample, the present utility model provides a center point calibration device for a Rockwell hardness tester.

[0005] The center point calibration device for a Rockwell hardness tester provided by the present utility model adopts the following technical solution:

[0006] A center point calibration device for a Rockwell hardness tester, a sliding groove with an annular cross-section is opened on the loading platform, which includes a slider, a connecting component and a calibration component. The first end of the slider extends into the sliding groove, and the slider is slidably connected to the loading platform. One end of the connecting component is connected to the slider and the other end is connected to the calibration component. The calibration component includes an installation sleeve and a scale. The installation sleeve is connected to the connecting component. The scale is horizontally arranged and is slidably connected to the installation sleeve. The scale is not lower than the top of the loading platform. The sample includes a first side and a second side, and the first side and the second side are arranged at an angle. The scale can respectively calibrate the distance between the installation sleeve and the first side and the distance between the installation sleeve and the second side to achieve the calibration of the sample.

[0007] By adopting the above technical solution, first move the slider to a position suitable for the operator to operate, then move the scale ruler towards the sample, so that the scale ruler extends out of the mounting sleeve by a first preset length, align the first side of the sample with the zero scale of the scale ruler to achieve the calibration of the first side; the operator fixes the position of the sample; then move the slider to another position suitable for the operator to operate again, adjust the second preset length of the scale ruler extending out of the mounting sleeve again, and move the sample along the length direction perpendicular to the state of the first side calibrated by the scale ruler, so that the second side of the sample is aligned with the zero scale of the scale ruler again to achieve the calibration of the second side, and then achieve the calibration of the center point. Repeat the above steps to more accurately find several center points of the sample and calibrate all the center points, improving the accuracy of the sample hardness measurement result. The calibration order of the first side and the second side can be reversed.

[0008] Preferably, it further includes a limiting strip, the limiting strip is connected with a magnetic strip, the magnetic strip is magnetically adsorbed to the stage, the limiting strip abuts against the sample, and the limiting strip is used for limiting the first side or the second side.

[0009] By adopting the above technical solution, if the first side of the sample is calibrated first, the limiting strip is used for limiting the calibrated first side of the sample, and during the movement of the sample when calibrating the second side, only need to move the sample along the side in the length direction of the limiting strip, reducing the possibility of measurement error caused by the sample moving in an offset direction.

[0010] If the second side of the sample is calibrated first, the limiting strip is used for limiting the calibrated second side of the sample, and during the movement of the sample when calibrating the first side, only need to move the sample along the side in the length direction of the limiting strip, reducing the possibility of measurement error caused by the sample moving in an offset direction.

[0011] Preferably, a limiting block is connected to one end of the scale ruler close to the stage, the side wall of the limiting block close to the sample is flush with the side wall of the scale ruler close to the sample, and the side wall of the scale ruler close to the sample is the zero scale, and the sample abuts against the limiting block.

[0012] By adopting the above technical solution, during the calibration process, the limiting block ensures that the first side or the second side of the sample can be accurately aligned with the zero scale.

[0013] Preferably, the connecting component includes a plug board and a connecting plate, a jack is opened on the slider, the plug board is inserted into the slider through the jack for fixing the plug board and the slider, and one end of the connecting plate is connected to the plug board and the other end is connected to the mounting sleeve.

[0014] By adopting the above technical solution, through the cooperation of the plug board and the connecting board, the slider can drive the mounting sleeve and the scale to move around the stage. Since the plug board is inserted into the slider, it is convenient to disassemble the connecting component and the calibration component when the hardness of the sample is not measured.

[0015] Preferably, it further includes a fixing bolt, and the fixing bolt passes through the slider and is connected to the plug board for fixing the plug board and the slider.

[0016] By adopting the above technical solution, this connection method is not only convenient for disassembly but also can ensure the reliability of the connection between the plug board and the slider.

[0017] Preferably, the fixing bolt passes through the plug board and is threadedly connected to the plug board.

[0018] By adopting the above technical solution, the reliability of the connection between the plug board and the slider is further increased, thereby maintaining the stable sliding of the scale.

[0019] Preferably, the extension line of the edge where the scale of the scale is located intersects the axis of the stage.

[0020] By adopting the above technical solution, during the calibration process, the operator can more intuitively observe the alignment of the scale with the center point of the sample, thereby further improving the calibration accuracy.

[0021] Preferably, the scale passes through the mounting sleeve, and the mounting sleeve is made of a transparent material.

[0022] By adopting the above technical solution, the transparent mounting sleeve enables the operator to clearly observe the scale on the scale, facilitating precise calibration operations.

[0023] Preferably, a stop block is fixedly connected to one end of the scale away from the stage.

[0024] By adopting the above technical solution, the stop block reduces the possibility of the scale falling out of the mounting sleeve and ensures the safety of use.

[0025] In summary, the utility model has the following beneficial effects:

[0026] First, move the slider to a position suitable for the operator to operate, then move the scale towards the sample, so that the scale extends out of the mounting sleeve by a first preset length. Align the first side of the sample with the zero scale of the scale to achieve the calibration of the first side; the operator fixes the position of the sample. Then move the slider to another position suitable for the operator to operate again, adjust the scale to extend out of the mounting sleeve by a second preset length again, and move the sample along the length direction perpendicular to the state of calibrating the first side of the scale, so that the second side of the sample is aligned with the zero scale of the scale again to achieve the calibration of the second side, and then achieve the calibration of the center point. Repeat the above steps to more accurately find several center points of the sample and calibrate all the several center points, improving the accuracy of the hardness measurement result of the sample. The calibration order of the first side and the second side can be reversed. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of a center point calibration device for a Rockwell hardness tester.

[0028] Figure 2 Aim to show the structure of the chute.

[0029] Figure 3 is a state diagram of the calibration component calibrating the sample.

[0030] Description of the reference numerals:

[0031] 1. Carriage; 11. Chute; 2. Slider; 21. Jack; 3. Connection component; 31. Plugboard; 32. Connecting plate; 4. Fixing bolt; 5. Calibration component; 51. Mounting sleeve; 52. Scale; 6. Limit block; 7. Stop block; 8. Limit strip; 81. Magnetic strip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following further describes the present utility model in detail with reference to the accompanying drawings.

[0033] A center point calibration device for a Rockwell hardness tester, referring to Figure 1 and Figure 2 , includes a slider 2, a connection component 3 and a calibration component 5. A chute 11 with an annular cross-section is provided on the carriage 1, and the first end of the slider 2 extends into the chute 11 and is slidably connected to the carriage 1. One end of the connection component 3 is connected to the slider 2 and the other end is connected to the calibration component 5. The calibration component 5 includes a mounting sleeve 51 and a scale 52. The mounting sleeve 51 is connected to the connection component 3. The scale 52 is horizontally arranged and is slidably connected to the mounting sleeve 51, and the scale 52 is not lower than the top of the carriage 1. The sample includes a first side and a second side, and the first side and the second side are arranged at an angle. The scale 52 can respectively calibrate the distance between the mounting sleeve 51 and the first side and the distance between the mounting sleeve 51 and the second side to achieve the calibration of the sample.

[0034] First, move the slider 2 to a position suitable for the operator to operate, and then move the scale 52 towards the sample direction so that the scale 52 extends from the mounting sleeve 51 by a first preset length. Align the first side of the sample with the zero scale of the scale 52 to achieve the calibration of the first side; the operator fixes the position of the sample; move the slider 2 to another position suitable for the operator to operate again, adjust the second preset length of the scale 52 extending from the mounting sleeve 51 again, and move the sample along the length direction perpendicular to the state of the first side calibrated by the scale 52 so that the second side of the sample is aligned with the zero scale of the scale 52 again to achieve the calibration of the second side, and thus achieve the calibration of the center point. Repeat the above steps to more accurately find several center points of the sample and calibrate all the center points, improving the accuracy of the sample hardness measurement result.

[0035] Refer to Figure 1 and Figure 2 , the bottom of the stage 1 of the Rockwell hardness tester is its own driving device, and the chute 11 is arranged around the driving device. The longitudinal section of the chute 11 is dovetail-shaped. The first end of the slider 2 matches the slider 2. The slider 2 is provided with a radian, and its radian is the same as that of the chute 11.

[0036] Refer to Figure 2 , a jack 21 is horizontally opened on the slider 2. The connecting component 3 includes a plug board 31 and a connecting board 32. The plug board 31 is horizontally arranged, and the plug board 31 is inserted into the slider 2 through the jack 21. The connecting board 32 is vertically arranged, one end of the connecting board 32 is fixedly connected to the plug board 31, and the other end is fixedly connected to the bottom of the mounting sleeve 51.

[0037] Through the cooperation of the plug board 31 and the connecting board 32, the slider 2 can drive the mounting sleeve 51 and the scale 52 to move around the stage 1. Since the plug board 31 is inserted into the slider 2, it is convenient to disassemble the connecting component 3 and the calibration component 5 when not measuring the hardness of the sample.

[0038] Refer to Figure 2 , the center point calibration device of the Rockwell hardness tester further includes a fixing bolt 4. One end of the fixing bolt 4 extends into the slider 2 and is threadedly connected to the slider 2. The fixing bolt 4 is connected to the plug board 31 to fix the plug board 31 to the slider 2. Preferably, the fixing bolt 4 passes through the plug board 31, and the fixing bolt 4 and the plug board 31 are threadedly connected. This connection method is not only convenient for disassembly but also can ensure the reliability of the connection.

[0039] Refer to Figure 3 , the scale 52 passes through the mounting sleeve 51 and is slidably connected to the mounting sleeve 51. The mounting sleeve 51 is made of a transparent material, and the transparent material can be PET or polycarbonate. This design enables the operator to clearly observe the scale on the scale 52, facilitating precise calibration operations.

[0040] Reference Figure 3 There is a distance between the scale 52 and the stage 1. The scale of the scale 52 is set along its length direction.

[0041] Reference Figure 3 The extension line of the edge where the scale on the scale 52 is located intersects with the axis of the stage 1. During the calibration process, the operator can more intuitively observe the alignment of the scale 52 with the center point of the sample, thereby further improving the calibration accuracy.

[0042] Reference Figure 3 The side wall of the scale 52 close to the sample is the zero scale. One end of the scale 52 close to the stage 1 is fixedly connected with a limit block 6. The side wall of the limit block 6 far from the sample is flush with the side wall of the scale 52 close to the sample. The limit block 6 abuts against the top of the stage 1, and the sample abuts against the limit block 6.

[0043] During the calibration process, the limit block 6 ensures that the first side or the second side of the sample can be accurately aligned with the zero scale.

[0044] Reference Figure 3 One end of the limit block 6 far from the stage 1 is fixedly connected with a stop block 7. The stop block 7 reduces the possibility of the scale 52 falling off from the mounting sleeve 51 and ensures the safety of use at the same time.

[0045] Reference Figure 3 The center point calibration device of the Rockwell hardness tester further includes a limit strip 8. A magnetic strip 81 is fixedly connected to the bottom of the limit strip 8, and the limit strip 8 is magnetically adsorbed to the stage 1 through the magnetic strip 81.

[0046] Reference Figure 3 If the first side of the sample is calibrated first, when the first side of the sample is aligned with the zero scale line of the scale 52, the limit strip 8 abuts against the side wall of the first side of the sample, and the length direction of the limit strip 8 is perpendicular to the length direction of the scale 52.

[0047] The limit strip 8 is used to limit the first side of the sample after calibration is completed. During the movement of the sample when calibrating the second side, only the side of the sample along the length direction of the limit strip 8 needs to be moved, reducing the possibility of measurement error caused by the movement of the sample in an offset direction.

[0048] Reference Figure 3 If the second side of the sample is calibrated first, when the second side of the sample is aligned with the zero scale line of the scale 52, the limit strip 8 abuts against the side wall of the second side of the sample, and the length direction of the limit strip 8 is perpendicular to the length direction of the scale 52.

[0049] The limit strip 8 is used to limit the second side of the sample after calibration is completed. During the movement of the sample when calibrating the first side, only the side of the sample along the length direction of the limit strip 8 needs to be moved, reducing the possibility of measurement error caused by the movement of the sample in an offset direction.

[0050] The working principle of this application is as follows: When performing a hardness test on a non-standard sample with dimensions that do not match the stage 1 of the Rockwell hardness tester, first insert the insertion rod into the insertion hole 21, and use the fixing bolt 4 to rotate and insert it into the slider 2 and the insertion plate 31 to fix the insertion plate 31 and the slider 2, enabling the slider 2 to drive the scale 52 and the mounting sleeve 51 to move around the stage 1.

[0051] The operator first moves the slider 2 to a position suitable for the operator to operate, and then moves the scale 52 towards the sample, so that the scale 52 extends out of the mounting sleeve 51 by a first preset length. Align the first side of the sample with the zero scale of the scale 52 to achieve the calibration of the first side. Adsorb the limiting strip 8 on the stage 1, make the side wall in the length direction of the limiting strip 8 abut against the sample, and make the length direction of the limiting strip 8 perpendicular to the length direction of the scale 52. The operator fixes the position of the sample.

[0052] The operator moves the slider 2 to another position suitable for operation again, adjusts the scale 52 to extend out of the mounting sleeve 51 by a second preset length again, and moves the sample along the side wall in the length direction of the limiting strip 8 so that the second side of the sample abuts against the limiting block 6, that is, aligns the second side of the sample with the zero scale of the scale 52 to achieve the calibration of the second side, and thus achieve the calibration of the first center point.

[0053] Repeat the above steps to more accurately find several center points of the sample and calibrate all the center points, improving the accuracy of the sample hardness measurement result. The calibration order of the first side and the second side can be reversed, and the calibration of the center point can also be achieved.

[0054] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A Rockwell hardness tester center point calibration device, characterized in that: A slide groove (11) with a circular cross-section is provided on the object platform (1), comprising a slider (2), a connecting component (3) and a calibration component (5); the first end of the slider (2) extends into the slide groove (11), the slider (2) is slidably connected to the object platform (1), one end of the connecting component (3) is connected to the slider (2), and the other end is connected to the calibration component (5); The calibration component (5) comprises a mounting sleeve (51) and a scale (52), wherein the mounting sleeve (51) is connected to the connecting component (3), the scale (52) is arranged horizontally, and the scale (52) is slidably connected to the mounting sleeve (51), and the scale (52) is not lower than the top of the stage (1); The sample comprises a first side and a second side, the first side and the second side are arranged at an angle, and the scale (52) can calibrate the distance between the installation sleeve (51) and the first side, and the distance between the installation sleeve (51) and the second side, respectively, so as to realize calibration of the sample.

2. A Rockwell hardness tester center point calibration device according to claim 1, characterized in that: It also includes a limit bar (8), the limit bar (8) is connected to a magnetic bar (81), the magnetic bar (81) is magnetically attracted to the sample stage (1), the limit bar (8) abuts against the sample, and the limit bar (8) is used to limit the first side or the second side.

3. A Rockwell hardness tester center point calibration device according to claim 1, characterized in that: One end of the scale (52) close to the stage (1) is connected to a limit block (6); the side wall of the limit block (6) close to the sample is flush with the side wall of the scale (52) close to the sample, and the side wall of the scale (52) close to the sample is at zero scale, and the sample abuts against the limit block (6).

4. A Rockwell hardness tester center point calibration device according to any one of claims 1 to 3, characterized in that: The connecting assembly (3) comprises a plug plate (31) and a connecting plate (32); a plug hole (21) is provided on the slider (2); the plug plate (31) is plugged into the slider (2) through the plug hole (21) to achieve fixation of the plug plate (31) and the slider (2); one end of the connecting plate (32) is connected to the plug plate (31) and the other end is connected to the mounting sleeve (51).

5. A Rockwell hardness tester center point calibration device according to claim 4, characterized in that: It also comprises a fixing bolt (4), which passes through the slider (2) and is connected to the plug plate (31) to achieve the fixing of the plug plate (31) and the slider (2).

6. A Rockwell hardness tester center point calibration device according to claim 5, characterized in that: The fixing bolt (4) passes through the insert plate (31) and is threadedly connected to the insert plate (31).

7. A Rockwell hardness tester center point calibration device according to claim 1, characterized in that: The extension line of the edge where the scale (52) is located intersects with the axis of the object carrier (1).

8. A Rockwell hardness tester center point calibration device according to claim 1, characterized in that: The scale (52) passes through the mounting sleeve (51), and the mounting sleeve (51) is made of a transparent material.

9. A Rockwell hardness tester center point calibration device according to claim 1, characterized in that: One end of the scale (52) away from the object platform (1) is fixedly connected to a stopper (7).

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