A hydraulic clamp for tensile specimens

Abstract

This utility model provides a hydraulic clamp for tensile test specimens, including a base plate. A crossbeam parallel to the base plate is fixedly mounted on top of the base plate, and a corresponding lifting plate is arranged below the crossbeam. A clamping hydraulic cylinder is provided on the base plate to drive the lifting plate to move up and down. A short-side centering mechanism is arranged below the lifting plate. This utility model quickly centers the billet through the short-side centering mechanism, and then the clamping hydraulic cylinder drives the lifting plate to move up and automatically clamp and fix the billet. Both sides of the billet can be processed simultaneously by machine tool equipment, ensuring processing accuracy and improving processing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic clamping technology, specifically relating to a hydraulic clamping fixture for tensile specimens. Background Technology

[0002] In metal tensile testing, blanks need to be cut from a designated part of the material to be tested, and then precision machine tools such as lathes and milling machines are used to process the blanks according to the size and shape of the standard specimen.

[0003] Currently, the billet is processed after being clamped and fixed in a bench vise. This requires manual clamping of the sample from at least two sides, which takes a lot of time and the billet is prone to misalignment, affecting the processing accuracy.

[0004] Therefore, it is necessary to design a hydraulic clamping fixture for tensile specimens that automatically aligns and clamps the blanks, ensuring processing accuracy and improving processing efficiency to solve the current technical problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a hydraulic clamping fixture for tensile test specimens that automatically aligns and clamps the blank, ensuring processing accuracy and improving processing efficiency.

[0006] The technical solution of this utility model is as follows: a tensile specimen hydraulic clamp, including a base plate, a crossbeam parallel to the base plate is fixedly mounted on the top of the base plate, a corresponding lifting plate is arranged below the crossbeam, a clamping hydraulic cylinder for driving the lifting plate to move up and down is arranged on the base plate, and a short-side centering mechanism is arranged below the lifting plate; the short-side centering mechanism has a base frame fixedly mounted on the top of the base plate, two sliders symmetrically arranged on the base frame with the lifting plate as the center, a gear rotatably mounted on the top center of the base frame, a rack meshing with the gear is fixedly mounted on the slider, a centering drive component for driving the slider to reciprocate is arranged at one end of the base frame, and a baffle is fixedly mounted on the top of the slider.

[0007] Furthermore, the top fixed frame of the base frame is provided with at least two parallel guide shafts, and the slider is slidably fitted on the outside of the guide shafts.

[0008] Furthermore, a pad is detachably fixed to the top of the lifting plate, and a material placement gap for placing blanks is provided between the pad and the crossbeam, with the upper end of the baffle corresponding to the material placement gap.

[0009] Furthermore, both the crossbeam and the pad are matched to the shape of the standard sample.

[0010] Furthermore, the base plate is provided with a long side centering mechanism; the long side centering mechanism has a parallel pneumatic gripper fixedly disposed on the top of the base plate corresponding to the center of the crossbeam, and two symmetrical grippers are provided on the two output ends of the parallel pneumatic gripper, and one end of the gripper opposite to the parallel pneumatic gripper extends to the space between the lifting plate and the crossbeam.

[0011] Furthermore, a T-shaped frame is fixedly provided on the top of the slider, and two baffles are symmetrically arranged on the upper end of the T-shaped frame.

[0012] Furthermore, the two racks are rotationally symmetrical about the gear at a radius of 180°.

[0013] Furthermore, side plates are provided at both ends of the crossbeam, and the side plates are fixedly installed on the top of the base plate.

[0014] Furthermore, the centering drive component is a pneumatic cylinder, a hydraulic cylinder, or an electric actuator.

[0015] Furthermore, lifting rings are evenly distributed on the base plate.

[0016] The beneficial effects of this utility model are as follows: After the short-side centering mechanism quickly centers the billet, the clamping hydraulic cylinder drives the lifting plate to move up and automatically clamp and fix the billet. Both sides of the billet can be processed simultaneously by machine tool equipment, ensuring processing accuracy and improving processing efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the hydraulic clamp for tensile specimens in this utility model.

[0018] Figure 2 This is a schematic diagram of the short-side centering mechanism in this utility model.

[0019] Figure 3 This is a schematic diagram of the long side centering mechanism in this utility model. Detailed Implementation

[0020] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are not intended to limit the present invention or its application or use in any way. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete, and to fully express the scope of the present invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0021] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] like Figure 1 and 2 As shown, a hydraulic clamp for tensile specimens is disclosed, including a base plate 1. A crossbeam 3 parallel to the base plate 1 is fixedly mounted on the upper part of the base plate 1. A corresponding lifting plate 7 is arranged below the crossbeam 3. A clamping hydraulic cylinder 8 is arranged on the base plate 1 to drive the lifting plate 7 to move up and down. A short-side centering mechanism 4 is arranged below the lifting plate 7. The short-side centering mechanism 4 has a base frame 41 fixedly mounted on the top of the base plate 1. Two sliders 42 are symmetrically arranged on the base frame 41 with the lifting plate 7 as the center. A gear 47 is rotatably mounted at the top center of the base frame 41. A rack 46 meshing with the gear 47 is fixedly mounted on the slider 42. A centering drive component 45 for driving the slider 42 to reciprocate is arranged at one end of the base frame 41. A baffle 43 is provided on the top fixed frame of the slider 42. In this example, the blank is placed on top of the lifting plate 7. The two sliders 42 are synchronously driven by the rack 46 and gear 47. When the centering drive component 45 drives one slider 42 to move towards the lifting plate 7, the other slider 42 moves synchronously towards the lifting plate 7. The two sliders 42 drive the two baffles 43 to move synchronously and push the two sides of the blank, so that it is centered on the lifting plate 7. Then, the clamping hydraulic cylinder 8 drives the lifting plate 7 to move upward. The lifting plate 7 and the crossbeam 3 clamp and fix the blank to facilitate the processing of the blank. After the blank is quickly centered by the short side centering mechanism 4, the clamping hydraulic cylinder 8 drives the lifting plate 7 to move upward to automatically clamp and fix the blank. Both sides of the blank can be processed simultaneously by the machine tool, ensuring processing accuracy and improving processing efficiency.

[0023] In some embodiments, the top of the base frame 41 is fixedly provided with at least two parallel guide shafts 44, and the slider 42 is slidably fitted on the outside of the guide shafts 44; specifically, the top of the base frame 41 has a U-shaped structure, and the two parallel guide shafts 44 are fixedly arranged in the U-shaped structure.

[0024] In some embodiments, a pad 6 is detachably fixed to the top of the lifting plate 7, and a material placement gap for placing blanks is provided between the pad 6 and the crossbeam 3. The upper end of the baffle 43 corresponds to the material placement gap. Specifically, the two ends of the pad 6 are detachably fixed to the top of the lifting plate 7 by bolts.

[0025] In some embodiments, the crossbeam 3 and the pad 6 are both matched with the shape of the standard sample to avoid interference between the cutting tool and the crossbeam 3 and the pad 6 when processing the blank; specifically, the crossbeam 3 and the pad 6 are the same shape as the standard sample.

[0026] In some embodiments, such as Figure 1 and 3 As shown, a long-side centering mechanism 5 is provided on the base plate 1. The long-side centering mechanism 5 has a parallel air gripper 51 fixedly installed on the top of the base plate 1 corresponding to the center of the crossbeam 3. Two symmetrical grippers 52 are provided on the two output ends of the parallel air gripper 51. The end of the gripper 52 facing away from the parallel air gripper 51 extends to the space between the lifting plate 7 and the crossbeam 6. The two output ends of the parallel air gripper 51 can move closer or further away synchronously, thereby driving the two parallel air grippers 51 to move closer or further away synchronously. When the two parallel air grippers 51 move closer synchronously, they push the billet to center on the top of the lifting plate 7 along its long side. Then, the clamping hydraulic cylinder 8 drives the lifting plate 7 to move upward. The lifting plate 7 and the crossbeam 3 clamp and fix the billet to facilitate the processing of the billet, further ensuring the clamping and positioning accuracy of the billet, and thus ensuring the processing accuracy of the billet.

[0027] In some embodiments, a T-shaped frame 48 is fixedly provided on the top of the slider 42, and two baffles 43 are symmetrically provided on the upper end of the T-shaped frame 48.

[0028] In some embodiments, the two racks 46 are rotationally symmetrical about the gear at a radius of 180°.

[0029] In some embodiments, side plates 6 are provided at both ends of the crossbeam 3, and the side plates 6 are fixedly installed on the top of the base plate 1.

[0030] In some embodiments, as an optional implementation of the centering drive component 45, the centering drive component 45 is a cylinder, a hydraulic cylinder, or an electric actuator.

[0031] In some embodiments, lifting rings 9 are evenly arranged on the base plate 1, which facilitates the lifting and movement of the fixture.

[0032] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0033] The embodiments described above only illustrate some implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A hydraulic clamp for tensile specimens, characterized in that: Includes a base plate, on the top of which a crossbeam parallel to the base plate is fixedly mounted, and below the crossbeam a corresponding lifting plate is provided. The base plate is provided with a clamping hydraulic cylinder that drives the lifting plate to move up and down, and below the lifting plate a short side centering mechanism is provided. The short-side centering mechanism has a base frame fixedly mounted on the top of the base plate. Two sliders are symmetrically arranged on the base frame with the lifting plate as the center. A gear is rotatably mounted on the top center of the base frame. A rack that meshes with the gear is fixedly mounted on the slider. A centering drive component that drives the slider to reciprocate is provided at one end of the base frame. A baffle is fixedly mounted on the top of the slider.

2. The hydraulic clamp for tensile specimens according to claim 1, characterized in that: The top fixed frame of the base frame is provided with at least two parallel guide shafts, and the slider is slidably fitted on the outside of the guide shafts.

3. The hydraulic clamp for tensile specimens according to claim 1, characterized in that: A pad is detachably fixed to the top of the lifting plate, and there is a material placement gap between the pad and the crossbeam for placing the blank. The upper end of the baffle corresponds to the material placement gap.

4. The hydraulic clamp for tensile specimens according to claim 3, characterized in that: Both the crossbeam and the pad are matched to the shape of the standard specimen.

5. The hydraulic clamp for tensile specimens according to claim 1, characterized in that: The base plate is provided with a long-side centering mechanism; The long-side centering mechanism has a parallel pneumatic gripper fixedly mounted on the top of the base plate corresponding to the center of the crossbeam. Two symmetrical grippers are provided on the two output ends of the parallel pneumatic gripper, and one end of the gripper opposite to the parallel pneumatic gripper extends between the lifting plate and the crossbeam.

6. The hydraulic clamp for tensile specimens according to claim 1, characterized in that: A T-shaped frame is fixedly installed on the top of the slider, and two baffles are symmetrically arranged on the upper end of the T-shaped frame.

7. The hydraulic clamp for tensile specimens according to claim 1, characterized in that: The two racks are rotate symmetrical about the gear at a radius of 180°.

8. The hydraulic clamp for tensile specimens according to claim 1, characterized in that: The crossbeam has side plates at both ends, and the side plates are fixedly mounted on the top of the base plate.

9. The hydraulic clamp for tensile specimens according to claim 1, characterized in that: The centering drive component is a pneumatic cylinder, a hydraulic cylinder, or an electric actuator.

10. The hydraulic clamp for tensile specimens according to claim 1, characterized in that: The base plate is evenly provided with lifting rings.

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