CN210243365U - Dynamic anti-concavity measuring device for metal sheet - Google Patents
Dynamic anti-concavity measuring device for metal sheet Download PDFInfo
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- CN210243365U CN210243365U CN201920981484.0U CN201920981484U CN210243365U CN 210243365 U CN210243365 U CN 210243365U CN 201920981484 U CN201920981484 U CN 201920981484U CN 210243365 U CN210243365 U CN 210243365U
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Abstract
The device for measuring the dynamic dent resistance of the metal sheet is characterized by comprising a frame structure and a test structure, wherein the frame structure comprises two guide pillars (3), a lower cross beam (5) and an upper cross beam (6), the lower end surfaces of the two guide pillars (3) are fixedly connected with the lower cross beam (5), the upper end surfaces of the two guide pillars (3) are fixedly connected with the upper cross beam (6), and rack guide rails are arranged on the inner sides of the two guide pillars (3); the utility model has the advantages that: the servo motor is adopted to drive the press, acting force is applied to the surface of a measured object, and constant and controllable initial speed can be obtained, so that the problem that the constant speed in the test process is difficult to guarantee by adopting a drop hammer or an air gun in the prior art is solved.
Description
Technical Field
The utility model belongs to a sheet metal developments anti concavity measuring device belongs to metal test technical field, in particular to sheet metal developments anti concavity measuring device.
Background
Automobiles are often subjected to external loads during daily use, such as light impact, crushed stone, hail and other dynamic impact loads, which require that the covering element has a certain resistance to indentation deformation. In addition, in order to realize light weight of the whole automobile in the automobile design stage, the automobile industry generally adopts light alloy or thin high-strength steel plates to produce the covering part, so that the dent resistance of the covering part is weakened.
The dent resistance of the covering part is related to the performance of the plate, the geometric shape of the part and other factors, such as the thickness of the plate, the mechanical property, the curvature of the part, the supporting condition, the stamping process and the like. In view of the importance of dent resistance research on ensuring the quality of the covered surface of the automobile body and the service performance, the inspection and evaluation of dent resistance become an indispensable part in the comprehensive quality evaluation of the automobile body.
At present, dynamic dent resistance tests at home and abroad generally adopt a drop hammer mode or an air gun to detect dynamic dent resistance, and because the dent resistance of a plate is related to the speed of a punch head, and the drop hammer mode or the air gun is difficult to ensure constant speed in the test process, research and development of a measuring device and a measuring method capable of evaluating the dynamic dent resistance of a metal sheet are urgently needed.
Disclosure of Invention
An object of the utility model is to provide a metal sheet developments anti concavity measuring device to solve the inaccurate problem of dynamic anti concavity performance measurement.
A device for measuring the dynamic dent resistance of a metal sheet is characterized by comprising a frame structure and a test structure,
the frame structure comprises two guide columns 3, a lower cross beam 5 and an upper cross beam 6, the lower end surfaces of the two guide columns 3 are fixedly connected with the lower cross beam 5, the upper end surfaces of the two guide columns 3 are fixedly connected with the upper cross beam 6, and rack guide rails are arranged on the inner sides of the two guide columns 3;
the test structure comprises a beam driving motor 1, a servo motor 2, a blank holder 4, a movable beam 7, a loading device 8, a sensor 9 and a presser 10, gears are arranged at two ends of the movable beam 7, the movable beam 7 is connected with rack guide rails on the inner sides of two guide pillars 3 through the gears, and a hollow groove rail is arranged on the lower surface of the movable beam 7 and used for mounting the loading device 8; two ends of the movable beam 7 are provided with gears which are matched with the inner sides of the 2 guide pillars 3 at the racks, so that the movable beam 7 can lift along the inner sides of the guide pillars 3 at the racks;
the loading device 8 is a cylindrical electromechanical device, the top of the loading device 8 is provided with a mounting disc, and the mounting disc is provided with a roller which is used for transversely moving in the moving beam empty groove guide rail; the servo motor 2 is arranged on the side surface of the loading device 8 and used for power supply and control of the whole test structure; the bottom of the loading device 8 is provided with a sensor 9, the bottom of the sensor 9 is provided with a press 10, the press 10 is a cylindrical metal piece, the upper surface of the press 10 is connected with the sensor 9, and the lower surface of the press 10 is used for directly contacting with a measured object 11;
the sensor 9 comprises a pressure sensor, an acceleration sensor, a displacement sensor and a contact sensor, the sensor 9 is connected with a computer, and the sensor 9 records pressure, acceleration, displacement and contact time data when the presser 10 contacts the sample and transmits the data to the computer; the beam driving motor 1 drives the movable beam 7 to move up and down for dynamically adjusting the distance between the press 10 and the object to be tested 11 so as to adapt to test parts in different shapes.
The upper surface of the lower cross beam 5 is provided with a blank holder 4, and the blank holder 4 is used for fixing a measured object 11.
The utility model has the advantages that: the servo motor is adopted to drive the press, acting force is applied to the surface of a measured object, and constant and controllable initial speed can be obtained, so that the problem that the constant speed in the test process is difficult to guarantee by adopting a drop hammer or an air gun in the prior art is solved.
Drawings
Fig. 1 is a schematic view of the main structure of the present invention. The device comprises a beam driving motor 1, a servo motor 2, a guide post 3, a blank holder 4, a lower beam 5, an upper beam 6, a movable beam 7, a loading system 8, a sensor 9, a presser 10 and a measured object 11.
Fig. 2 is a schematic view of the working principle of the present invention.
FIG. 3 is a graph of dynamic dent test impact velocity vs. dent depth for test specimens made of DX51D + Z cold rolled steel sheets.
FIG. 4 is a graph of AA6016 aluminum alloy thickness versus dynamic dent resistance.
Fig. 5 is a schematic structural diagram of the present invention.
Detailed Description
A device for measuring the dynamic dent resistance of a metal sheet is characterized by comprising a frame structure and a test structure,
the frame structure comprises two guide columns 3, a lower cross beam 5 and an upper cross beam 6, the lower end surfaces of the two guide columns 3 are fixedly connected with the lower cross beam 5, the upper end surfaces of the two guide columns 3 are fixedly connected with the upper cross beam 6, and rack guide rails are arranged on the inner sides of the two guide columns 3;
the test structure comprises a beam driving motor 1, a servo motor 2, a blank holder 4, a movable beam 7, a loading device 8, a sensor 9 and a presser 10, gears are arranged at two ends of the movable beam 7, the movable beam 7 is connected with rack guide rails on the inner sides of two guide pillars 3 through the gears, and a hollow groove rail is arranged on the lower surface of the movable beam 7 and used for mounting the loading device 8; two ends of the movable beam 7 are provided with gears which are matched with the inner sides of the 2 guide pillars 3 at the racks, so that the movable beam 7 can lift along the inner sides of the guide pillars 3 at the racks;
the loading device 8 is a cylindrical electromechanical device, the top of the loading device 8 is provided with a mounting disc, and the mounting disc is provided with a roller which is used for transversely moving in the moving beam empty groove guide rail; the servo motor 2 is arranged on the side surface of the loading device 8 and used for power supply and control of the whole test structure; the bottom of the loading device 8 is provided with a sensor 9, the bottom of the sensor 9 is provided with a press 10, the press 10 is a cylindrical metal piece, the upper surface of the press 10 is connected with the sensor 9, and the lower surface of the press 10 is used for directly contacting with a measured object 11;
the sensor 9 comprises a pressure sensor, an acceleration sensor, a displacement sensor and a contact sensor, the sensor 9 is connected with a computer, and the sensor 9 records pressure, acceleration, displacement and contact time data when the presser 10 contacts the sample and transmits the data to the computer; the beam driving motor 1 drives the movable beam 7 to move up and down for dynamically adjusting the distance between the press 10 and the object to be tested 11 so as to adapt to test parts in different shapes.
The upper surface of the lower cross beam 5 is provided with a blank holder 4, and the blank holder 4 is used for fixing a measured object 11.
A device for measuring dynamic dent resistance of a metal sheet comprises a beam driving motor 1, a servo motor 2, a guide post 3, a blank holder 4, a lower beam 5, an upper beam 6, a movable beam 7, a loading system 8, a sensor 9, a presser 10 and a sample 11.
The testing machine is divided into a frame structure and a testing structure. The frame structure comprises guide columns 3, a lower cross beam 5 and an upper cross beam 6. The guide post 3 is a common carbon steel cylindrical upright post with the width of 1 meter, the height of about 2.5 meters and the thickness of 2mm, the inner part of one side of the upright post is of a hollow structure, and a gear is arranged in the upright post and is used for being matched with the movable cross beam 7. Each set is provided with 2 guide posts 3.
The lower beam 5 is a common carbon steel beam with the length of 1.5 meters and the thickness of 2mm, and convex grooves for fixing the guide pillars 3 are arranged at two ends of the lower beam.
The upper beam 6 is a common carbon steel beam with the length of 1.5 meters and the thickness of 2mm, and convex grooves for fixing the guide pillars 3 are arranged at two ends of the upper beam. A beam driving motor 1 is arranged in the middle part; the interior is a hollow structure for placing relevant wires of the driving motor 1.
The assembly position relation of the guide post 3, the lower cross beam 5 and the upper cross beam 6 is as follows: the lower cross beam 5 is placed on the ground, the 2 guide pillars 3 and the lower cross beam 5 are assembled through the convex grooves, the verticality is guaranteed, and then the lower cross beam and the guide pillars are welded into a whole. And then two ends of the upper crossbeam 6 are respectively assembled with the top ends of the 2 guide pillars 3 and welded.
The test structure portion of the tester. The method comprises the following steps: servo motor 2, blank holder 4, movable beam 7, loading system 8, sensor 9, presser 10, testee 11.
The movable beam 7 is a cylindrical beam with the length of 1.5 meters, and the lower surface is a hollow groove track for installing a loading system 8. The two ends are provided with gears which are used for matching with the gears in the 2 guide posts 3.
The loading system 8 is a cylindrical electromechanical device. The top is equipped with the mounting disc, and the mounting disc is equipped with the gyro wheel and is used for removing in the movable beam dead slot guide rail. The side surface of the loading system 8 is provided with a servo motor 2 for power supply and control of the whole test structure. The bottom of the loading system 8 is provided with a sensor 9. The bottom of the sensor 9 is provided with a press 10, the press 10 is a cylindrical metal piece and is used for directly contacting with a measured object, and the other end of the press is contacted with the sensor 9.
The clamping ring 4 is a separate clamping piece, the shape of which is determined according to the object 11 to be measured.
Specifically, the sensor 9 is provided with a pressure sensor, an acceleration sensor, a displacement sensor, and a contact sensor, and records the pressure, acceleration, and contact time of the pressing process of the presser 10. The beam driving motor 1 drives the movable beam 7 to move up and down for dynamically adjusting the distance between the press 10 and the object to be tested 11 so as to adapt to test parts in different shapes.
Specifically, the loading system 8 adopts a screw nut device to convert the rotary motion of the servo motor 2 into linear motion, and drives the press 10 to act on the object 11 to be measured.
And the frame structure and the test structure are assembled in position, the assembled frame structure and the assembled test structure are connected with the guide pillar 3 through two ends of the movable cross beam 7, and related circuits are connected.
A transmission relation of a metal sheet dynamic dent resistance measuring device is as follows: the crossbeam driving motor 1 drives the transmission shaft of the upper crossbeam 6 to rotate through the speed reducer, and the transmission shaft of the upper crossbeam 6 drives the movable crossbeam 7 to move up and down through the bevel gear and the ball screw system.
An object to be tested 11 is fixed through the blank holder 4, the servo motor 2 drives the presser 10 to press downwards at a speed of more than 1m/s from the normal direction of the contact surface of the object to be tested 11 through the loading system 8, and each parameter in the anti-concave process is obtained through the sensor 9, so that the anti-concave performance of the test piece is evaluated.
A method for measuring dynamic dent resistance of a metal sheet comprises the following specific steps:
1) fixing a tested object 11 to be tested on a test bed through a blank holder 4, and adjusting a moving beam 7 to a proper distance by adopting a driving motor 1;
2) adjusting parameters of the servo motor 2 through system software to obtain the contact speed of the preset presser 10 and the sample 11;
3) the pressing element 10 acts on the measured object 11 at a certain speed, and the sensor 9 records the pressure, acceleration, displacement and contact time data when the pressing element 10 contacts the sample;
4) by reading the data recorded by the process sensor 9, a velocity-indentation depth curve, a load-indentation depth curve, and a load-displacement curve are obtained.
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the device for measuring dynamic dent resistance of a metal sheet comprises a beam driving motor 1, a servo motor 2, a guide pillar 3, a blank holder 4, a lower beam 5, an upper beam 6, a movable beam 7, a loading system 8, a sensor 9, a presser 10 and a measured object 11.
The testing machine is divided into a frame structure and a testing structure. The frame structure comprises guide columns 3, a lower cross beam 5 and an upper cross beam 6. The guide post 3 is a common carbon steel cylindrical upright post with the width of 1 meter, the height of about 2.5 meters and the thickness of 2mm, the inner part of one side of the upright post is of a hollow structure, and a gear is arranged in the upright post and is used for being matched with the movable cross beam 7. Each set is provided with 2 guide posts 3.
The lower beam 5 is a common carbon steel beam with the length of 1.5 meters and the thickness of 2mm, and convex grooves for fixing the guide pillars 3 are arranged at two ends of the lower beam.
The upper beam 6 is a common carbon steel beam with the length of 1.5 meters and the thickness of 2mm, and convex grooves for fixing the guide pillars 3 are arranged at two ends of the upper beam. A beam driving motor 1 is arranged in the middle part; the interior is a hollow structure for placing relevant wires of the driving motor 1.
The assembly position relation of the guide post 3, the lower cross beam 5 and the upper cross beam 6 is as follows: the lower cross beam 5 is placed on the ground, the 2 guide pillars 3 and the lower cross beam 5 are assembled through the convex grooves, the verticality is guaranteed, and then the lower cross beam and the guide pillars are welded into a whole. And then two ends of the upper crossbeam 6 are respectively assembled with the top ends of the 2 guide pillars 3 and welded.
The test structure portion of the tester. The method comprises the following steps: servo motor 2, blank holder 4, movable beam 7, loading system 8, sensor 9, presser 10, testee 11.
The movable beam 7 is a cylindrical beam with the length of 1.5 meters, and the lower surface is a hollow groove track for installing a loading system 8. The two ends are provided with gears which are used for matching with the gears in the 2 guide posts 3.
The loading system 8 is a cylindrical electromechanical device. The top is equipped with the mounting disc, and the mounting disc is equipped with the gyro wheel and is used for removing in the movable beam dead slot guide rail. The side surface of the loading system 8 is provided with a servo motor 2 for power supply and control of the whole test structure. The bottom of the loading system 8 is provided with a sensor 9. The sensor 9 is provided with a presser 10 at the bottom, and the presser 10 is a cylindrical metal piece and is used for directly contacting with the object to be measured.
The blank holder 4 is a separate hold-down member whose shape is determined according to the test piece 11.
Specifically, the sensor 9 is provided with a pressure sensor, an acceleration sensor, a displacement sensor, and a contact sensor, and records the pressure, acceleration, and contact time of the pressing process of the presser 10. The beam driving motor 1 drives the movable beam 7 to move up and down for dynamically adjusting the distance between the press 10 and the object to be tested 11 so as to adapt to test parts in different shapes.
Specifically, the loading system 8 adopts a screw nut device to convert the rotary motion of the servo motor 2 into linear motion, and drives the press 10 to act on the object 11 to be measured.
And the frame structure and the test structure are assembled in position, the assembled frame structure and the assembled test structure are connected with the guide pillar 3 through two ends of the movable cross beam 7, and related circuits are connected.
A transmission relation of a metal sheet dynamic dent resistance measuring device is as follows: the crossbeam driving motor 1 drives the transmission shaft of the upper crossbeam 6 to rotate through the speed reducer, and the transmission shaft of the upper crossbeam 6 drives the movable crossbeam 7 to move up and down through the bevel gear and the ball screw system.
An object to be tested 11 is fixed through the blank holder 4, the servo motor 2 drives the presser 10 to press downwards at a speed of more than 1m/s from the normal direction of the contact surface of the presser 10 and the sample 11 through the loading system 8, and each parameter in the anti-concave process is obtained through the sensor 9, so that the anti-concave performance of the sample is evaluated.
The embodiment of the utility model provides a sheet metal developments anti concavity measuring method, concrete step is as follows:
1) fixing a tested sample 11 on a test bed through a blank holder 4, and adjusting a moving beam 7 to a proper distance by adopting a driving motor 1;
2) the contact speed of the preset presser 10 and the sample 11 is obtained by adjusting the parameters of the servo motor 2;
3) the pressing element 10 acts on the sample 11 at a certain speed, and the sensor 9 records pressure, acceleration, displacement and contact time data when the pressing element 10 contacts the sample;
4) by reading the data recorded by the process sensor 8, a velocity-indentation depth curve, a load-indentation depth curve, and a load-displacement curve are obtained.
The first embodiment is as follows:
a test sample prepared by using a DX51D + Z cold-rolled steel plate is fixed on a test bed through a blank holder, and the distance between a moving beam and the test sample is adjusted to be 0.5 m. The test parameters were adjusted by the plant operating software and the press speeds were set to 2m/s, 4m/s, 6m/s, 8m/s and 10m/s, respectively. When the test is started, the sensor records pressure, acceleration, displacement and contact time data in the test process. Through data processing, an impact velocity-dent depth relation curve is obtained, as shown in fig. 3.
Example two:
samples prepared from AA6016 aluminum alloy with the thickness of 1.0mm, 1.5mm and 2.0mm are fixed on a test bed, and the distance between a moving beam and the samples is adjusted to be 0.5 m. The test parameters were adjusted by the plant operating software and the press speed was set to 4 m/s. When the test is started, the sensor records pressure, acceleration, displacement and contact time data in the test process. Through data processing, a dynamic load energy-dent depth relation curve is obtained, as shown in fig. 4.
The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention in any form, and those skilled in the art will understand that the above technical principles are utilized to perform a plurality of modifications, which all fall within the protection scope of the present invention.
Claims (2)
1. A device for measuring the dynamic dent resistance of a metal sheet is characterized by comprising a frame structure and a test structure,
the frame structure comprises two guide pillars (3), a lower cross beam (5) and an upper cross beam (6), the lower end faces of the two guide pillars (3) are fixedly connected with the lower cross beam (5), the upper end faces of the two guide pillars (3) are fixedly connected with the upper cross beam (6), and rack guide rails are arranged on the inner sides of the two guide pillars (3);
the test structure comprises a beam driving motor (1), a servo motor (2), a blank holder (4), a movable beam (7), a loading device (8), a sensor (9) and a presser (10), wherein gears are arranged at two ends of the movable beam (7), the movable beam (7) is connected with rack guide rails on the inner sides of two guide columns (3) through the gears, and a hollow groove rail is arranged on the lower surface of the movable beam (7) and used for mounting the loading device (8); gears are arranged at two ends of the movable cross beam (7) and are matched with the inner sides of the 2 guide pillars (3) in the racks, so that the movable cross beam (7) can lift in the racks along the inner sides of the guide pillars (3);
the loading device (8) is a cylindrical electromechanical device, the top of the loading device (8) is provided with a mounting disc, and the mounting disc is provided with a roller which is used for transversely moving in the moving beam empty groove guide rail; a servo motor (2) is arranged on the side surface of the loading device (8) and is used for power supply and control of the whole test structure; a sensor (9) is arranged at the bottom of the loading device (8), a press (10) is arranged at the bottom of the sensor (9), the press (10) is a cylindrical metal piece, the upper surface of the press (10) is connected with the sensor (9), and the lower surface of the press (10) is used for directly contacting with a measured object (11);
the sensor (9) comprises a pressure sensor, an acceleration sensor, a displacement sensor and a contact sensor, the sensor (9) is connected with a computer, and the sensor (9) records pressure, acceleration, displacement and contact time data when the presser (10) contacts the measured object (11) and transmits the data to the computer; the beam driving motor 1 drives the movable beam (7) to move up and down and is used for dynamically adjusting the distance between the press (10) and the object to be tested (11) so as to adapt to test parts in different shapes.
2. The device for measuring the dynamic dent resistance of the metal sheets as claimed in claim 1, wherein the lower cross beam (5) is provided with a blank holder (4) on the upper surface, and the blank holder (4) is used for fixing the object to be measured (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920981484.0U CN210243365U (en) | 2019-06-27 | 2019-06-27 | Dynamic anti-concavity measuring device for metal sheet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920981484.0U CN210243365U (en) | 2019-06-27 | 2019-06-27 | Dynamic anti-concavity measuring device for metal sheet |
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| CN210243365U true CN210243365U (en) | 2020-04-03 |
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| CN201920981484.0U Active CN210243365U (en) | 2019-06-27 | 2019-06-27 | Dynamic anti-concavity measuring device for metal sheet |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186764A (en) * | 2019-06-27 | 2019-08-30 | 北京航天新风机械设备有限责任公司 | A kind of sheet metal dynamic dent resistance measuring device |
| CN115235907A (en) * | 2022-09-19 | 2022-10-25 | 江苏金圣硅基新材料研究院有限公司 | Intensity detection device is used in optical glass processing |
-
2019
- 2019-06-27 CN CN201920981484.0U patent/CN210243365U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186764A (en) * | 2019-06-27 | 2019-08-30 | 北京航天新风机械设备有限责任公司 | A kind of sheet metal dynamic dent resistance measuring device |
| CN115235907A (en) * | 2022-09-19 | 2022-10-25 | 江苏金圣硅基新材料研究院有限公司 | Intensity detection device is used in optical glass processing |
| CN115235907B (en) * | 2022-09-19 | 2022-12-02 | 江苏金圣硅基新材料研究院有限公司 | Intensity detection device for optical glass processing |
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