Mechanically positioned impact testing device

Abstract

This utility model relates to the field of positioning impact tools, specifically a mechanical positioning impact testing device. It includes a support base, a support plate slidably mounted on the top of the support base, a test piece placed on the top of the support plate, and a pneumatic gripper positioned above the support plate. The pneumatic gripper is driven to move in a plane by a transverse and longitudinal lead screw slide. The bottom of the support plate is supported and its height adjusted by a height adjustment component. An impact hammer is held in the pneumatic gripper. In this mechanical positioning impact testing device, for the position adjustment of the impact hammer, the pneumatic gripper is driven to move in a plane by the transverse and longitudinal lead screw slides. Both the transverse and longitudinal lead screw slides are connected to servo motors and electrically connected to a control system, enabling precise control of their movement distance and speed. This allows the impact hammer to move flexibly and accurately within a plane, enabling precise impact testing of various parts of the test piece according to testing requirements.

Description

Technical Field

[0001] This utility model relates to the field of positioning impact tools, and more specifically, to a mechanical positioning impact testing device. Background Technology

[0002] In the field of impact testing technology, the drop hammer impact tester plays a crucial role, widely used in numerous industries such as automotive, aerospace, construction, and materials research and development to evaluate the performance of materials and products under impact. By simulating impact scenarios in real-world conditions, it provides vital data support for product design, quality control, and the development of new materials.

[0003] As industries increasingly demand higher material performance, higher standards are being set for the accuracy, efficiency, and stability of drop weight impact testers. While the drop weight impact tester with application number 202411146487.4 possesses certain functions and meets some testing needs to a certain extent, many similar drop weight impact testers on the market, including the device described in this prior art, still have a series of problems that urgently need to be addressed.

[0004] Existing impact hammers are inconvenient to adjust in position, making it difficult to conduct precise impact tests on different parts of the test piece, and the height of the test piece is also inconvenient to adjust. Utility Model Content

[0005] The purpose of this invention is to provide a mechanically positioned impact testing device to solve the problems mentioned in the background art, such as the inconvenience of adjusting the position of existing impact hammers, the difficulty in accurately impacting different parts of the test piece, and the inconvenience of adjusting the height of the test piece.

[0006] To achieve the above objectives, this utility model provides a mechanically positioned impact testing device, including a support base, a support plate slidably disposed on the top of the support base, a test piece placed on the top of the support plate, a pneumatic gripper disposed above the support plate, the pneumatic gripper being driven to perform planar movement by a transverse lead screw slide and a longitudinal lead screw slide, the bottom of the support plate being supported and height-adjusted by a height adjustment component, and an impact hammer being held on the pneumatic gripper.

[0007] This support base provides the foundation for the entire device, while the top support plate carries the test specimen. The pneumatic grippers move on a plane via transverse and longitudinal screw slides, allowing for flexible adjustment of the impact hammer's position. The height adjustment mechanism at the bottom of the support plate changes its height to accommodate different testing requirements. The pneumatic grippers hold the impact hammer for impact testing of the test specimen.

[0008] Preferably, there are two height adjustment components, each including a threaded sleeve. The tops of the two threaded sleeves are respectively fixed to the bottom sides of the support plate. A threaded rod is threadedly connected to the threaded sleeve. The support base has a U-shaped structure. The bottom end of the threaded rod is rotatably connected to the inner bottom wall of the support base through a bearing.

[0009] This height adjustment mechanism utilizes the threaded transmission principle of a threaded sleeve and a threaded rod. By rotating the threaded rod, the threaded sleeve moves up and down, thereby adjusting the height of the support plate connected to the top of the threaded sleeve. The U-shaped structure of the support base provides space for the installation and rotation of the threaded rod, and the bearing reduces friction during the rotation of the threaded rod.

[0010] Preferably, the support base has columns installed at both ends of its top, the transverse screw slide is installed between the tops of the two columns, the longitudinal screw slide is slidably disposed at the bottom of the transverse screw slide, the slider of the transverse screw slide is connected to the longitudinal screw slide, and the slider of the longitudinal screw slide is connected to the base of the pneumatic gripper.

[0011] This setup involves installing columns at both ends of the top of the support base, providing an installation foundation for the transverse screw slide. The slider of the transverse screw slide drives the longitudinal screw slide to move laterally, while the slider of the longitudinal screw slide drives the pneumatic gripper to move longitudinally. The two work together to achieve two-dimensional movement of the pneumatic gripper in a plane.

[0012] Preferably, a guide rod is vertically installed at the bottom center of the pneumatic gripper, and a vertical hole is opened in the middle of the impact hammer, with the bottom of the guide rod sliding through the vertical hole of the impact hammer.

[0013] This device features a guide rod in the middle of the pneumatic gripper that engages with the vertical hole in the middle of the impact hammer. When the impact hammer is performing an impact motion, the guide rod restricts the lateral movement of the impact hammer, allowing it to move vertically only along the direction of the guide rod, thus providing a guiding function.

[0014] Preferably, springs are installed at both ends of the top of the impact hammer.

[0015] This feature includes a spring mounted on the top of the impact hammer. When the impact hammer strikes downwards, the spring releases elastic potential energy. After the impact is complete, when the pneumatic gripper 5 re-grips the impact hammer 6, it simultaneously compresses the spring 52 to store elastic potential energy.

[0016] Preferably, both the transverse lead screw slide and the longitudinal lead screw slide include a housing. A servo motor is fixedly mounted on one outer side of the housing. The servo motor is connected to the lead screw via a coupling. The lead screw is rotatably mounted inside the housing. The slider is threadedly connected to the outside of the lead screw and is limited to sliding inside the housing. The servo motor is electrically connected to the control system. The control system can precisely control the movement distance and speed of the slider on the transverse and longitudinal lead screw slides.

[0017] In this configuration, the servo motor is connected to the lead screw via a coupling, converting the motor's rotational motion into the lead screw's linear motion. The control system precisely controls the servo motor's rotation angle and speed according to the set parameters, thereby precisely controlling the movement distance and speed of the transverse and longitudinal lead screw slides, achieving precise positioning of the pneumatic gripper (impact hammer).

[0018] Preferably, the bottom of the impact hammer has an outwardly convex arc surface structure.

[0019] This design, with its curved bottom structure, alters the contact method between the impact hammer and the test piece. Compared to a flat structure, the curved surface allows the impact force to be distributed more evenly on the test piece surface during impact, and it is also easier to generate rolling or sliding effects during the impact process.

[0020] Preferably, the top surface of the support plate is provided with a rubber anti-slip layer, the rubber anti-slip layer is provided with a positioning groove, and the bottom of the test piece is provided with a positioning protrusion that matches the positioning groove, so as to achieve accurate positioning of the test piece.

[0021] This feature involves the positioning groove of the rubber anti-slip layer on the top of the support plate cooperating with the positioning protrusion on the bottom of the test piece. The shape fit achieves precise positioning of the test piece, and the rubber anti-slip layer increases the friction between the test piece and the support plate, preventing the test piece from shifting during impact.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] In this mechanically positioned impact testing device, the pneumatic gripper is driven by a transverse and longitudinal lead screw slide for planar movement to adjust the position of the impact hammer. Both the transverse and longitudinal lead screw slides are connected to servo motors and electrically connected to the control system, enabling precise control of their movement distance and speed. This allows the impact hammer to move flexibly and precisely within a plane, enabling accurate impact testing of various parts of the test piece according to testing requirements. This significantly improves the flexibility and accuracy of the test, effectively overcoming the problem of inconvenient position adjustment in existing impact hammers.

[0024] For adjusting the height of the test piece, a height adjustment component located at the bottom of the support plate, connected by a threaded sleeve and a threaded rod, allows for convenient adjustment of the support plate's height, thus enabling flexible adjustment of the height position of the test piece placed on the support plate. This design can adapt to testing requirements of different specifications, greatly enhancing the versatility and applicability of the device compared to existing technologies where the height position of the test piece is inconvenient to adjust.

[0025] In addition, the guide rod vertically installed at the bottom center of the pneumatic gripper slides in conjunction with the vertical hole in the middle of the impact hammer, and a spring is installed at the top of the impact hammer, which can ensure the stability of the impact hammer during the impact process, reduce shaking and deviation, and further improve the reliability of the test results. The arc-shaped structure at the bottom of the impact hammer helps to optimize the impact effect, making the impact more in line with the needs of actual scenarios. The rubber anti-slip layer and positioning groove at the top of the support plate, together with the positioning protrusion at the bottom of the test piece, realize the precise positioning of the test piece, prevent the test piece from shifting during the test, and ensure the accuracy and consistency of the test. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the height adjustment component in this utility model;

[0028] Figure 3 This is a schematic diagram of the pneumatic gripper in this utility model;

[0029] The meanings of the labels in the diagram are as follows:

[0030] 1. Support base; 11. Support plate; 12. Height adjustment component; 121. Threaded sleeve; 122. Threaded rod; 123. Bearing; 2. Column; 3. Transverse lead screw slide; 4. Longitudinal lead screw slide; 5. Pneumatic gripper; 51. Guide rod; 52. Spring; 6. Impact hammer; 7. Test piece. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] This utility model provides a mechanically positioned impact testing device, such as... Figure 1As shown, the device includes a support base 1, a support plate 11 slidably mounted on the top of the support base 1, a test piece 7 placed on the top of the support plate 11, a pneumatic gripper 5 mounted above the support plate 11, the pneumatic gripper 5 being driven to perform planar motion by a transverse lead screw slide 3 and a longitudinal lead screw slide 4, the bottom of the support plate 11 being supported and its height adjusted by a height adjustment component 12, and an impact hammer 6 being held on the pneumatic gripper 5.

[0033] In use, the support base 1 provides basic support for the entire device, and the top support plate 11 is used to support the test piece 7. The pneumatic gripper 5 moves on a plane via the transverse lead screw slide 3 and the longitudinal lead screw slide 4, enabling flexible adjustment of the position of the impact hammer 6; the height adjustment component 12 at the bottom of the support plate 11 can change the height of the support plate 11 to adapt to different testing requirements; the pneumatic gripper 5 holds the impact hammer 6 for impact testing of the test piece 7. The above structure constructs the basic structural framework of the mechanical positioning impact testing device, enabling the device to perform impact testing functions, and through the transverse lead screw slide 3, the longitudinal lead screw slide 4, and the height adjustment component 12, it can meet the adjustment requirements of the impact position and the height of the test piece 7 under different testing scenarios, improving the versatility and applicability of the device.

[0034] In this embodiment, as Figure 2 As shown, there are two height adjustment components 12. Each height adjustment component 12 includes a threaded sleeve 121. The tops of the two threaded sleeves 121 are respectively fixed to the two sides of the bottom surface of the support plate 11. A threaded rod 122 is threadedly connected to the threaded sleeve 121. The support base 1 has a U-shaped structure. The bottom end of the threaded rod 122 is rotatably connected to the inner bottom wall of the support base 1 through a bearing 123.

[0035] The height adjustment component 12 includes a threaded sleeve 121 and a threaded rod 122. Utilizing the threaded transmission principle of the two, rotating the threaded rod 122 allows the threaded sleeve 121 to move up and down, thereby driving the support plate 11 connected to the top of the threaded sleeve 121 to adjust its height. The support base 1 has a U-shaped structure, providing space for the installation and rotation of the threaded rod 122. The bottom end of the threaded rod 122 is rotatably connected to the inner wall of the support base 1 through a bearing 123, reducing the frictional force when the threaded rod 122 rotates. This achieves precise and stable adjustment of the height of the support plate 11, facilitating the adjustment of the test height according to the size of the test piece 7 or test requirements, improving the flexibility of the test. Furthermore, the threaded transmission structure is simple and reliable, and easy to operate and maintain.

[0036] Specifically, such as Figure 1As shown, the support base 1 has columns 2 installed at both ends of the top. The transverse screw slide 3 is installed between the tops of the two columns 2. The longitudinal screw slide 4 is slidably set at the bottom of the transverse screw slide 3. The longitudinal screw slide 4 and the transverse screw slide 3 are perpendicular to each other on the horizontal plane. The slider of the transverse screw slide 3 is connected to the longitudinal screw slide 4. The slider of the longitudinal screw slide 4 is connected to the base of the pneumatic gripper 5.

[0037] The support base 1 has columns 2 installed at both ends of its top, providing a mounting base for the transverse lead screw slide 3. The slider of the transverse lead screw slide 3 drives the longitudinal lead screw slide 4 to move laterally, and the slider of the longitudinal lead screw slide 4 drives the pneumatic gripper 5 to move longitudinally. The two work together to achieve two-dimensional movement of the pneumatic gripper 5 in the plane. Through the structural design of the longitudinal lead screw slide 4 and the transverse lead screw slide 3, the pneumatic gripper 5 can accurately position the impact hammer 6 in the plane, allowing for impact testing of different parts of the test piece 7, improving the accuracy and coverage of the test, and meeting diverse testing needs.

[0038] Furthermore, such as Figure 3 As shown, a guide rod 51 is vertically installed at the bottom center of the pneumatic gripper 5, and a vertical hole is opened in the middle of the impact hammer 6. The bottom of the guide rod 51 slides through the vertical hole of the impact hammer 6.

[0039] A guide rod 51 is vertically installed in the middle of the pneumatic gripper 5, which slides in conjunction with the vertical hole in the middle of the impact hammer 6. When the impact hammer 6 is performing impact motion, the guide rod 51 restricts the lateral movement of the impact hammer 6, so that it can only move vertically along the direction of the guide rod 51, which plays a guiding role, ensuring the motion stability of the impact hammer 6 during the impact process, reducing the shaking and deviation of the impact hammer 6, improving the accuracy of the impact and the reliability of the test results, and avoiding inaccurate test data due to the movement deviation of the impact hammer 6.

[0040] Furthermore, such as Figure 3 As shown, springs 52 are installed at both ends of the top of the impact hammer 6. Initially, the pneumatic gripper 5 holds the impact hammer 6, and the springs 52 are compressed, storing elastic potential energy for the downward impact of the impact hammer 6. When the impact hammer 6 impacts downwards, the springs 52 release their elastic potential energy, providing the impact force to the impact hammer 6.

[0041] Furthermore, such as Figure 1 As shown, both the transverse lead screw slide 3 and the longitudinal lead screw slide 4 include a housing. A servo motor is fixedly installed on the outer side of one side of the housing. The servo motor is connected to the lead screw through a coupling. The lead screw is rotatably located inside the housing. The slider is threadedly connected to the outer side of the lead screw and is limited to sliding inside the housing. The servo motor is electrically connected to the control system. The control system can precisely control the movement distance and speed of the slider on the transverse lead screw slide 3 and the longitudinal lead screw slide 4.

[0042] By converting the rotational motion of the motor into the linear motion of the lead screw, the control system precisely controls the rotation angle and speed of the servo motor according to the set parameters, thereby precisely controlling the movement distance and speed of the sliders on the transverse lead screw slide 3 and the longitudinal lead screw slide 4. This achieves precise positioning of the pneumatic gripper 5 and the impact hammer 6, improving the positioning accuracy of the pneumatic gripper 5 and the impact hammer 6. This meets the requirements of high-precision impact testing and allows for more detailed and accurate testing of the test piece 7. At the same time, automated control reduces human error and improves testing efficiency and consistency.

[0043] Furthermore, the bottom of the impact hammer 6 has an outwardly convex arc surface structure, which changes the contact method between the impact hammer 6 and the test piece 7. Compared with the planar structure, the arc surface can distribute the impact force more evenly on the surface of the test piece 7 during impact, and it is easier to generate rolling or sliding effects during the impact process. This optimizes the impact effect and makes the impact more consistent with the multi-angle and uneven force conditions in the actual scenario, thereby improving the authenticity and effectiveness of the test and enabling a more accurate evaluation of the performance of the test piece 7 under actual impact conditions.

[0044] Furthermore, a rubber anti-slip layer is provided on the top surface of the support plate 11, and a positioning groove is formed on the rubber anti-slip layer. The bottom of the test piece 7 is provided with a positioning protrusion that matches the positioning groove, so as to achieve precise positioning of the test piece 7. The precise positioning of the test piece 7 is achieved by the shape fit. The rubber anti-slip layer increases the friction between the test piece 7 and the support plate 11, preventing the test piece 7 from shifting during the impact process. This ensures the stability and precise positioning of the test piece 7 during the test, avoids inaccurate test results due to the movement of the test piece 7, improves the reliability and repeatability of the test, and provides a guarantee for obtaining accurate test data.

[0045] Before using the mechanical positioning impact testing device of this utility model, test preparation is first performed. The test piece 7 is placed on top of the support plate 11. The positioning groove of the rubber anti-slip layer on the top of the support plate 11 matches the shape of the positioning protrusion on the bottom of the test piece 7, so as to achieve precise positioning of the test piece 7. At the same time, the rubber anti-slip layer increases the friction between the two to prevent the test piece 7 from shifting during the subsequent test.

[0046] Based on the specific dimensions of test piece 7 and the testing requirements, the height of the device is adjusted. The height adjustment component 12 plays a crucial role, its core being the threaded transmission engagement between the threaded sleeve 121 and the threaded rod 122. By rotating the threaded rod 122, the threaded sleeve 121 moves up and down. Since the top of the threaded sleeve 121 is connected to the support plate 11, the movement of the threaded rod 122 can synchronously raise and lower the support plate 11, thereby achieving precise adjustment of the height of the support plate 11 to adapt to different testing height requirements. The U-shaped structure of the support base 1 provides space for the installation and rotation of the threaded rod 122. Its bottom end is rotatably connected to the inner wall of the support base 1 via a bearing 123, effectively reducing the frictional force during the rotation of the threaded rod 122 and ensuring a smooth adjustment process.

[0047] Next, the position of the impact hammer 6 is adjusted. The control system sends commands to the servo motor, which is connected to the lead screws of the transverse lead screw slide 3 and the longitudinal lead screw slide 4 via couplings, converting the motor's rotational motion into the linear motion of the lead screws. The slider of the transverse lead screw slide 3 drives the longitudinal lead screw slide 4 to move laterally, and the slider of the longitudinal lead screw slide 4 drives the pneumatic gripper 5 to move longitudinally. The two work together to achieve precise two-dimensional movement of the pneumatic gripper 5 in the plane. Because the pneumatic gripper 5 holds the impact hammer 6, its position can be precisely adjusted so that it is accurately aligned with the part of the test piece 7 that needs to be impacted.

[0048] After completing the above preparations and adjustments, the impact test begins. During the impact, the guide rod 51 restricts the lateral movement of the impact hammer 6, ensuring that the impact hammer 6 can only make vertical impact movements along the direction of the guide rod 51, thus guaranteeing the accuracy and stability of the impact. When the impact hammer 6 impacts the test piece 7 downwards using its own weight, the compressed spring 52 releases elastic potential energy, providing impact force for the impact hammer 6. After the impact hammer 6 completes its impact, it is manually moved upwards, causing the pneumatic gripper 5 to re-grip the impact hammer 6, while simultaneously compressing the spring 52 to store elastic potential energy. In addition, the arc-shaped structure at the bottom of the impact hammer 6 changes the contact method with the test piece 7, making the impact force more evenly distributed on the surface of the test piece 7 during impact, simulating the multi-angle, uneven force conditions in actual scenarios, thereby more realistically testing the performance of the test piece 7 under actual impact conditions.

[0049] After one impact test is completed, if it is necessary to test other parts of the test piece 7, the above-described steps for adjusting the position of the impact hammer 6 can be repeated to continue the testing. Throughout the testing process, all components of the device work together, achieving efficient and accurate impact testing based on its unique structural design and working principle.

[0050] Finally, it should be noted that the electronic components in the transverse lead screw slide 3, longitudinal lead screw slide 4, etc. of this embodiment are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order between each electrical component in the above working principle to complete the electrical connection. All of these are technologies known in the art.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mechanical positioning impact testing device comprising a support base (1), characterized in that: A support plate (11) is slidably provided on the top of the support base (1). A test piece (7) is placed on the top of the support plate (11). A pneumatic gripper (5) is provided above the support plate (11). The pneumatic gripper (5) is driven to perform planar motion by a transverse screw slide (3) and a longitudinal screw slide (4). The bottom of the support plate (11) is supported and its height is adjusted by a height adjustment component (12). An impact hammer (6) is held on the pneumatic gripper (5).

2. The mechanical positioning impact testing device of claim 1, wherein: The height adjustment component (12) consists of two parts, each including a threaded sleeve (121). The tops of the two threaded sleeves (121) are respectively fixed to the bottom sides of the support plate (11). The threaded sleeve (121) is internally threaded with a threaded rod (122). The support base (1) has a U-shaped structure. The bottom end of the threaded rod (122) is rotatably connected to the inner bottom wall of the support base (1) through a bearing (123).

3. The mechanical positioning impact testing device of claim 1, wherein: The support base (1) has columns (2) installed at both ends of the top. The transverse screw slide (3) is installed between the tops of the two columns (2). The longitudinal screw slide (4) is slidably disposed at the bottom of the transverse screw slide (3). The slider of the transverse screw slide (3) is connected to the longitudinal screw slide (4). The slider of the longitudinal screw slide (4) is connected to the base of the pneumatic gripper (5).

4. The mechanical positioning impact testing device of claim 3, wherein: A guide rod (51) is vertically installed at the bottom center of the pneumatic gripper (5), and a vertical hole is opened in the middle of the impact hammer (6). The bottom of the guide rod (51) slides through the vertical hole of the impact hammer (6).

5. The mechanical positioning impact testing device of claim 4, wherein: Springs (52) are installed at both ends of the top of the impact hammer (6).

6. The mechanically positioned impact testing device according to claim 1, characterized in that: Both the transverse lead screw slide (3) and the longitudinal lead screw slide (4) include a housing. A servo motor is fixedly installed on one side of the housing. The servo motor is connected to the lead screw through a coupling. The lead screw is rotatably installed inside the housing. The slider is threadedly connected to the outside of the lead screw and is limited to sliding inside the housing. The servo motor is electrically connected to the control system. The control system can accurately control the movement distance and speed of the slider on the transverse lead screw slide (3) and the longitudinal lead screw slide (4).

7. The mechanically positioned impact testing device according to claim 1, characterized in that: The bottom of the impact hammer (6) is an outwardly convex arc surface structure.

8. The mechanically positioned impact testing device according to claim 1, characterized in that: The top surface of the support plate (11) is provided with a rubber anti-slip layer, and a positioning groove is provided on the rubber anti-slip layer. The bottom of the test piece (7) is provided with a positioning protrusion that matches the positioning groove, so as to achieve accurate positioning of the test piece (7).

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