Sample piece fixing clamp for flying stone impact test
By designing sample fixing fixtures for multi-dimensional adjustment mechanisms and automatic control systems, the problem of frequent clamping and positioning of samples in flying stone impact tests is solved, and the test efficiency and degree of automation are improved.
Patent Information
- Application Number
- CN202422030049.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-08-21
AI Technical Summary
In the existing flying stone impact test, the sample fixing fixture needs to be frequently clamped and positioned manually, resulting in high labor intensity and low efficiency for the tester, especially when testing large samples or high and low temperatures.
A sample fixing fixture including a base, a clamping device and a multi-dimensional adjustment mechanism is designed. Through longitudinal, transverse, incline, height and angle adjustment mechanisms, combined with a servo motor and a programmable logic controller, the sample is automatically positioned and angled adjustment in the three-dimensional coordinate system.
Automatic adjustment of sample position and angle is achieved, the number of repeated clamping is reduced, and the testing efficiency is improved. It shortens from 2-3 months to 1-2 weeks, liberating the physical labor of the testers.
Smart Images
Figure CN223283999U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of impact testing, in particular to a sample (such as automobile parts) fixing fixture used for flying stone impact testing. Background Art
[0002] Rockfall impact testing is an important method for evaluating the impact resistance of automotive materials and products. Current specimen fixtures rely on manual operation, requiring the specimen to be re-clamped and sometimes replaced with new fixtures for each test surface facing a rockfall launcher, such as a rockfall gun barrel. Each test point also requires manual positioning, requiring two people to complete these operations for large specimens or when performing high or low temperature impact tests.
[0003] For example, a typical test involves 18 specimens, each of which requires 15 impacts. The maximum specimen length is 1.2 meters and weighs approximately 8 kg. The repetitive and high-intensity labor places a heavy burden on the testers, affecting the progress of the entire test. The entire test can take 2 to 3 months. Utility Model Content
[0004] Therefore, the purpose of the present invention is to provide a sample fixing fixture for flying stone impact test. By using this sample fixing fixture, the position of the sample can be automatically adjusted without re-clamping the sample, thereby realizing the test of various test points of the sample.
[0005] Therefore, the present invention provides a sample fixing fixture for a flying stone impact test, the sample fixing fixture comprising: a base, wherein the base is arranged to be fixed in position relative to a flying stone launcher; a clamping device, the clamping device being used to fix and clamp the sample to be tested; and an adjusting and positioning device, the clamping device being connected to the base in a multi-directionally movable manner through the adjusting and positioning device; wherein the adjusting and positioning device comprises: a first longitudinal adjustment mechanism, for adjusting the sample along the longitudinal direction of the base to be close to or away from the flying stone launcher; a height adjustment mechanism, for adjusting the position of the sample in the vertical direction relative to the base; an inclination position adjustment mechanism, for adjusting the inclination angle of the sample relative to the base; a lateral adjustment mechanism, for adjusting the position of the sample along the lateral direction of the base; a second longitudinal adjustment mechanism, for fine-tuning the position of the sample along the longitudinal direction of the base; and an angular adjustment mechanism, for adjusting the horizontal rotation angle of the sample relative to the base.
[0006] By providing a sample fixing fixture for a flying rock impact test according to the present invention, not only can the position of the sample be moved in a three-dimensional coordinate system as needed, but the sample can also be rotated horizontally and the angle of the sample facing the flying rock launcher can be adjusted.
[0007] According to one embodiment of the present invention, the height adjustment mechanism is connected to the first longitudinal adjustment mechanism; the tilt position adjustment mechanism is connected to the height adjustment mechanism; the lateral adjustment mechanism is connected to the tilt position adjustment mechanism; the second longitudinal adjustment mechanism is connected to the lateral adjustment mechanism; and the angular adjustment mechanism is connected to the second longitudinal adjustment mechanism.
[0008] According to a preferred embodiment of the present invention, the sample fixing fixture also includes a control device communicatively connected to the adjustment and positioning device, wherein the control device is configured to control the longitudinal adjustment mechanism, the height adjustment mechanism, the tilt position adjustment mechanism, the lateral adjustment mechanism, the second longitudinal adjustment mechanism and the angular adjustment mechanism to move and adjust the sample to a plurality of test positions for the flying stone impact test.
[0009] According to a preferred embodiment of the present invention, the first longitudinal adjustment mechanism includes a first linear rail fixedly connected to the base, a first sliding bracket slidably connected to the first linear rail, and a first motor for driving the first sliding bracket to move along the first linear rail; the height adjustment mechanism includes a second linear rail fixedly connected to the first sliding bracket, a second sliding bracket slidably connected to the second linear rail, and a second motor for driving the second sliding bracket to move along the second linear rail; the tilt position adjustment mechanism includes a rotating shaft rotatably connected to the second sliding bracket, a supporting plate fixedly connected to the rotating shaft, and a first motor for driving the rotating shaft The third motor of the axis pivots; the lateral adjustment mechanism includes a third linear rail fixedly connected to the support plate, a third sliding bracket slidably connected to the third linear rail, and a fourth motor for driving the third sliding bracket to move along the third linear rail; the second longitudinal adjustment mechanism includes a fourth linear rail fixedly connected to the third sliding bracket, a fourth sliding bracket slidably connected to the fourth linear rail, and a fifth motor for driving the fourth sliding bracket to move along the fourth linear rail; and the angular adjustment mechanism includes a connecting member for connecting the clamping device to the fourth sliding bracket so as to be horizontally rotatable and a rotary motor for driving the clamping device to rotate horizontally.
[0010] In one solution, in order to provide more stable support, the tilt position adjustment mechanism further includes an auxiliary support rod, such as a pneumatic support rod, one end of the auxiliary support rod is connected to the second sliding bracket, and the other end is connected to the support plate.
[0011] In a preferred solution, the rotation axis is arranged parallel to the third linear rail.
[0012] In one embodiment of the present invention, a control device is communicatively coupled to the first motor, the second motor, the third motor, the fourth motor, the fifth motor, and the rotary motor, respectively, for controlling the operation of the corresponding motors. Preferably, to better achieve position adjustment and positioning of the sample, the first motor, the second motor, the third motor, the fourth motor, the fifth motor, and the rotary motor are all servo motors.
[0013] In a preferred embodiment of the present invention, the control device includes a programmable logic controller (PLC) and a control panel, wherein the programmable logic controller is configured to store multiple adjusted test positions of the first sample in a batch of samples during testing, and to automatically adjust and position the test positions of the remaining samples based on the multiple test positions.
[0014] In the aforementioned sample fixture for rockfall impact testing, the final positioning of the sample is achieved through the interaction of two or more of the longitudinal adjustment mechanism, height adjustment mechanism, tilt position adjustment mechanism, lateral adjustment mechanism, second longitudinal adjustment mechanism, and angular adjustment mechanism. Each sample only needs to be clamped once, eliminating the need for multiple clamping and fixture replacement. By providing a control device to control each adjustment mechanism, each test position is recorded during the first sample test. Subsequent samples no longer require manual positioning; simply click the desired position on the control panel to automatically complete the positioning. This frees testers from heavy manual labor and greatly improves work efficiency, reducing project completion time from 2-3 months to 1-2 weeks. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] With reference to the accompanying drawings, further features and advantages of the present invention will be more clearly understood by reading the following detailed description:
[0016] Figure 1 A three-dimensional view of an embodiment of a sample fixing fixture for a flying rock impact test according to the present invention is shown, wherein the clamping device is in a horizontal position.
[0017] Figure 2 The sample to be tested is shown fixed on Figure 1 Schematic diagram of the sample fixing fixture in the figure; and
[0018] Figure 3 Shown Figure 1 Another perspective view of the sample fixing fixture is shown, in which the clamping device is in an inclined position. DETAILED DESCRIPTION
[0019] The following will describe, with reference to the accompanying drawings and by way of example, a fixture for performing a flying rock impact test on a sample according to the present invention. In the following description, numerous specific details are set forth to provide a more comprehensive understanding of the present invention for those skilled in the art. However, it will be apparent to those skilled in the art that the present invention may be implemented without some of these specific details. Furthermore, it should be understood that the present invention is not limited to the specific embodiments described. Rather, any combination of the following features and elements may be considered to implement the present invention, regardless of whether they relate to different embodiments.
[0020] In this application, the terms "transverse direction," "longitudinal direction," and "vertical direction" are defined based on the positioning direction of the "sample" in the sample fixture. The "longitudinal direction" refers to the longitudinal direction of the base of the sample fixture, and may also refer to the front-to-back direction of the sample (the X direction in a three-dimensional coordinate system); the "transverse direction" refers to the transverse direction of the base of the sample fixture, and may also refer to the left-to-right direction of the sample (the Y direction in a three-dimensional coordinate system); and the vertical direction refers to the up-down direction of the sample (the Z direction in a three-dimensional coordinate system). The above-mentioned sample fixture allows the position of the sample to be adjusted in the X, Y, and Z directions during the sample test without the need to re-clamp the sample, thereby improving test efficiency.
[0021] Figure 1 and Figure 2 An embodiment of a sample fixing fixture 100 for a flying rock impact test according to the present invention is shown. As can be seen from the figure, in this embodiment, the sample fixing fixture 100 includes a base 1, a clamping device 2, and an adjustment and positioning device. The base 1 is roughly rectangular, defining a longitudinal direction X along its length and a transverse direction Y along its width, as well as a vertical direction Z perpendicular to both the longitudinal direction and the transverse direction. During the flying rock impact test, the base 1 is arranged to be fixed relative to the flying rock launcher (not shown), so that by adjusting the position of the sample relative to the base, its position relative to the flying rock launcher can be adjusted. The clamping device 2 can be connected to the base 1 in a multi-directional manner by adjusting the positioning device, and the clamping device 2 is used to fix and clamp the sample 10 to be tested.
[0022] In this embodiment, it is advantageous that the adjustment and positioning device includes a first longitudinal adjustment mechanism 3, a height adjustment mechanism 4 connected to the first longitudinal adjustment mechanism, an inclination position adjustment mechanism 5 connected to the height adjustment mechanism 4, a transverse adjustment mechanism 6 connected to the inclination position adjustment mechanism 5, a second longitudinal adjustment mechanism 7 connected to the transverse adjustment mechanism 6, and an angular adjustment mechanism 8 connected to the second longitudinal adjustment mechanism 7.
[0023] Specifically, the first longitudinal adjustment mechanism 3 is configured to adjust the sample 10 along the longitudinal direction X of the base, moving it closer to or further away from the rock launcher. This ensures sufficient space for the sample and minimizes the distance between the rock launcher barrel and the sample being tested, ensuring that the muzzle velocity of the stone is as close as possible to the actual impact velocity. The height adjustment mechanism 4 is configured to control the raising and lowering of the sample 10, adjusting its position in the vertical direction Z relative to the base 1, i.e., moving it up and down relative to the rock launcher barrel. The tilt adjustment mechanism 5 is configured to adjust the tilt angle of the sample 10 relative to the base 1, i.e., moving it in pitch relative to the rock launcher barrel, to achieve the desired test angle. The transverse adjustment mechanism 6 is configured to adjust the position of the sample 10 along the transverse direction Y of the base, i.e., moving it left and right relative to the rock launcher barrel. The second longitudinal adjustment mechanism 7 is configured to fine-tune the position of the sample 10 along the longitudinal direction X of the base 1, i.e., controlling small forward and backward movements of the sample. The angular adjustment mechanism 8 is configured to adjust the horizontal rotation angle of the sample 10 relative to the base 1 so that different test surfaces of the sample face the barrel of the flying rock launcher.
[0024] In a preferred embodiment, the sample fixing fixture 100 also includes a control device that is communicatively connected to the adjustment and positioning device, wherein the control device is configured to control the longitudinal adjustment mechanism 3, the height adjustment mechanism 4, the tilt position adjustment mechanism 5, the lateral adjustment mechanism 6, the second longitudinal adjustment mechanism 7 and the angular adjustment mechanism 8 to automatically adjust the sample 10 to multiple test positions for the flying stone impact test.
[0025] In one embodiment, see again Figure 1The first longitudinal adjustment mechanism 3 may include a first linear rail 31 fixedly connected to the base 1, a first sliding bracket 32, and a first motor 33, wherein the first sliding bracket 31 is slidably connected to the first linear rail and is driven by the first motor 33 to move along the first linear rail. In one embodiment, the height adjustment mechanism 4 may include a second linear rail 41 fixedly connected to the first sliding bracket 32, a second sliding bracket 42 slidably connected to the second linear rail 41, and a second motor 43 for driving the second sliding bracket to move along the second linear rail. In one embodiment, the tilt position adjustment mechanism 5 may include a rotating shaft 51 rotatably connected to the second sliding bracket 42, a support plate 52 fixedly connected to the rotating shaft, and a third motor 53 for driving the rotating shaft 51 to pivot. In one embodiment, the lateral adjustment mechanism 6 may include a third linear rail 61 fixedly connected to the support plate 52, a third sliding bracket 62 slidably connected to the third linear rail, and a fourth motor 63 for driving the third sliding bracket 62 to move along the third linear rail. In one embodiment, the second longitudinal adjustment mechanism 7 (also referred to as a longitudinal fine-tuning mechanism) may include a fourth linear rail 71 fixedly connected to the third sliding bracket 62, a fourth sliding bracket 72 slidably connected to the fourth linear rail, and a fifth motor 73 for driving the fourth sliding bracket to move along the fourth linear rail. In one embodiment, the angular adjustment mechanism 8 includes a connector 81 for horizontally rotatably connecting the clamping device 2 to the fourth sliding bracket 71 and a rotary motor 83 for driving the clamping device 2 to rotate horizontally, thereby rotating different test surfaces of the sample to face the barrel of the flying stone launcher (not shown).
[0026] In this application, the linear rail is known to those skilled in the art, and its specific structure will not be described in detail here.
[0027] In the above embodiment, the control device can be respectively connected to the first motor 33, the second motor 43, the third motor 53, the fourth motor 63, the fifth motor 73, and the rotary motor 83 to control the operation and start and stop of the corresponding motors. Preferably, the first motor 33, the second motor 43, the third motor 53, the fourth motor 63, the fifth motor 73, and the rotary motor 83 can all be servo motors.
[0028] In a preferred embodiment, see Figure 3 The tilt position adjustment mechanism 5 further includes an auxiliary support rod 54, such as a pneumatic support rod, one end of which is connected to the second sliding bracket 42 and the other end is connected to the third linear rail 61, so as to assist the support plate in stably supporting the components thereon. Figure 1The rotating shaft 51 is arranged parallel to the third linear rail 61. When the rotating shaft 51 and the lateral adjustment mechanism 6, the second longitudinal adjustment mechanism 7, the angular adjustment mechanism 8 and the clamping device thereon are rotated to Figure 3 After being in the position shown, the sample 10 fixedly clamped on the clamping device 2 can be rotated with the clamping device 2 to a suitable testing angle facing the barrel of the flying stone launcher.
[0029] According to a preferred embodiment of the present invention, the control device includes a programmable logic controller and a control panel, and the programmable logic controller is configured to store multiple adjusted test positions of the first sample in a batch of samples during the testing of the batch, and to automatically adjust and position the test positions of the remaining samples based on the multiple test positions.
[0030] In the aforementioned specimen fixture for flying rock impact testing, the various adjustment mechanisms work together to achieve final specimen positioning. The control unit features a position memory function, storing up to 30 positions. When testing multiple specimens at multiple positions, simply memorizing the test positions for one specimen eliminates the need for manual positioning of other specimens; simply click the desired position on the control panel to automatically position the specimen.
[0031] For example, in a flying rock impact test, 18 specimens are involved, each subject to 15 impacts. The first specimen is clamped to a new fixture, and buttons on the control panel control the movement of the various adjustment mechanisms. Each of the 15 impact points on the specimen is located sequentially and stored in the programmable logic controller. Each location is then tested sequentially. Once all impact points have been tested, the specimen is replaced, and the above steps are repeated until the entire experiment is complete. This specimen-fixing fixture frees testers from heavy manual labor, greatly improving work efficiency and reducing project completion time from 2-3 months to 1-2 weeks.
[0032] Although the present invention has been disclosed above with reference to preferred embodiments, the present invention is not limited thereto. Any combination, change, and modification made by any person skilled in the art without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined by the claims.
Claims
1. A sample fixing fixture for a flying rock impact test, characterized in that: The sample fixing fixture (100) comprises: a base (1), wherein the base is arranged to be fixed relative to the position of the flying rock launching device; A clamping device (2) for fixing and clamping a sample (10) to be tested; and An adjustment and positioning device, through which the clamping device (2) is connected to the base (1) in a multi-directionally movable manner; Wherein the adjusting and positioning device comprises: a first longitudinal adjustment mechanism (3) for adjusting the sample (10) along the longitudinal direction (X) of the base to move it closer to or farther from the flying stone launching device; a height adjustment mechanism (4) for adjusting the position of the sample (10) in a vertical direction (Z) relative to the base (1); An inclination position adjustment mechanism (5) for adjusting the inclination angle of the sample (10) relative to the base (1); a transverse adjustment mechanism (6) for adjusting the position of the sample (10) along the transverse direction (Y) of the base; a second longitudinal adjustment mechanism (7) for fine-tuning the position of the sample (10) along the longitudinal direction (X) of the base; and An angular adjustment mechanism (8) is used to adjust the horizontal rotation angle of the sample (10) relative to the base (1).
2. The sample fixing fixture according to claim 1, characterized in that: The height adjustment mechanism (4) is connected to the first longitudinal adjustment mechanism (3); The tilt position adjustment mechanism (5) is connected to the height adjustment mechanism (4); The lateral adjustment mechanism (6) is connected to the tilt position adjustment mechanism (5); The second longitudinal adjustment mechanism (7) is connected to the transverse adjustment mechanism (6); and The angular adjustment mechanism (8) is connected to the second longitudinal adjustment mechanism (7).
3. The sample fixing fixture according to claim 1 or 2, characterized in that: The sample fixing fixture (100) further includes a control device in communication with the adjustment and positioning device, wherein the control device is configured to control the first longitudinal adjustment mechanism (3), the height adjustment mechanism (4), the tilt position adjustment mechanism (5), the lateral adjustment mechanism (6), the second longitudinal adjustment mechanism (7) and the angular adjustment mechanism (8) to automatically adjust the sample (10) to a plurality of test positions for a flying stone impact test.
4. The sample fixing fixture according to claim 3, characterized in that: The first longitudinal adjustment mechanism (3) comprises a first linear rail (31) fixedly connected to the base (1), a first sliding bracket (32) slidably connected to the first linear rail, and a first motor (33) for driving the first sliding bracket to move along the first linear rail; The height adjustment mechanism (4) comprises a second linear rail (41) fixedly connected to the first sliding bracket (32), a second sliding bracket (42) slidably connected to the second linear rail, and a second motor (43) for driving the second sliding bracket to move along the second linear rail; The tilt position adjustment mechanism (5) comprises a rotating shaft (51) rotatably connected to the second sliding bracket (42), a support plate (52) fixedly connected to the rotating shaft, and a third motor (53) for driving the rotating shaft (51) to pivot; The lateral adjustment mechanism (6) comprises a third linear rail (61) fixedly connected to the support plate (52), a third sliding bracket (62) slidably connected to the third linear rail, and a fourth motor (63) for driving the third sliding bracket to move along the third linear rail; The second longitudinal adjustment mechanism (7) comprises a fourth linear rail (71) fixedly connected to the third sliding bracket (62), a fourth sliding bracket (72) slidably connected to the fourth linear rail, and a fifth motor (73) for driving the fourth sliding bracket to move along the fourth linear rail; and The angular adjustment mechanism (8) comprises a connecting member (81) for connecting the clamping device to the fourth sliding bracket (72) in a horizontally rotatable manner, and a rotary motor (83) for driving the clamping device (2) to rotate horizontally.
5. The sample fixing fixture according to claim 4, characterized in that: The tilt position adjustment mechanism (5) further comprises an auxiliary support rod (54), wherein one end of the auxiliary support rod is connected to the second sliding bracket (42), and the other end of the auxiliary support rod is connected to the third linear rail (61).
6. The sample fixing fixture according to claim 4, characterized in that: The rotation axis (51) is arranged parallel to the third linear rail (61).
7. The sample fixing fixture according to claim 4, characterized in that: The control device is communicatively connected to the first motor (33), the second motor (43), the third motor (53), the fourth motor (63), the fifth motor (73), and the rotary motor (83), respectively.
8. The sample fixing fixture according to claim 3, characterized in that: The control device includes a programmable logic controller and a control panel. The programmable logic controller is configured to store multiple adjusted test positions of the first sample in a batch of samples during testing, and to automatically adjust and position the test positions of the remaining samples based on the multiple test positions.
9. The sample fixing fixture according to any one of claims 4 to 8, characterized in that: The first motor (33), the second motor (43), the third motor (53), the fourth motor (63), the fifth motor (73) and the rotary motor (83) are all servo motors.