A special hydraulic clamp for impact and tensile composite

Abstract

This utility model provides a special hydraulic clamp for impact and tensile composite tests, including a base plate. Tensile specimen clamps and impact specimen clamps are sequentially arranged along the axis of the top of the base plate. The impact specimen clamp has a base, a guide seat is provided on the top of the base, a clamping block is slidably arranged inside the guide seat, and a clamping seat corresponding to the clamping block is provided on the top of the base. V-shaped clamping grooves are correspondingly provided on the clamping seat and the clamping block. A second clamping hydraulic cylinder is provided on the base to drive the clamping block closer to or away from the clamping seat. In this utility model, the tensile specimen clamp and the impact specimen clamp can automatically clamp and fix the blanks for impact and tensile tests respectively, which can shorten the blank clamping time and improve processing efficiency compared to manual bench vise clamping.

Description

Technical Field

[0001] This utility model belongs to the field of clamping technology, specifically relating to a special hydraulic clamp for impact and tensile composite applications. Background Technology

[0002] Both metal impact and tensile tests require the blanks to be machined into specimens before testing. Currently, the blanks are machined after being clamped and fixed in a bench vise. However, bench vise clamping requires manual clamping, which takes a lot of time. Furthermore, it is difficult to hold the bar-shaped blanks stably in the bench vise for impact tests. In addition, the blanks in tensile tests are prone to misalignment, affecting the machining accuracy.

[0003] Therefore, it is necessary to design a special hydraulic clamp for impact and tensile tests that can simultaneously and stably clamp and fix the billet for impact and tensile tests, prevent the billet from loosening during processing, ensure processing accuracy, and improve processing efficiency to solve the current technical problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a special hydraulic clamp for impact and tensile composite tests that can simultaneously and stably clamp and fix billets for impact and tensile tests, preventing the billets from loosening during processing, ensuring processing accuracy, and improving processing efficiency.

[0005] The technical solution of this utility model is as follows: a special hydraulic clamp for impact and tensile composite, including a base plate, on the top of the base plate along its axis are arranged a tensile specimen clamp and an impact specimen clamp; the impact specimen clamp has a base, on the top of the base is a guide seat, a clamping block is slidably arranged inside the guide seat, and on the top of the base is a clamping seat corresponding to the clamping block, and V-shaped clamping grooves are correspondingly arranged on the clamping seat and the clamping block; a second clamping hydraulic cylinder is arranged on the base to drive the clamping block to move closer to or away from the clamping seat; the tensile specimen clamp has a crossbeam fixedly mounted above the base plate parallel to it, a corresponding lifting plate is arranged below the crossbeam, a first clamping hydraulic cylinder is arranged on the base plate to drive the lifting plate to move up and down, and a short side centering mechanism is arranged below the lifting plate.

[0006] Furthermore, two clamping grooves are symmetrically arranged on the side of the clamping seat near the clamping block, and two clamping blocks corresponding to the two clamping grooves are slidably arranged inside the guide seat.

[0007] Furthermore, the clamping block has a movable clamping surface on one side where the clamping groove is provided, and the clamping seat has a fixed clamping surface on one side where the clamping groove is provided.

[0008] Furthermore, 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.

[0009] 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.

[0010] 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.

[0011] Furthermore, both the crossbeam and the pad are matched to the shape of the standard sample.

[0012] 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.

[0013] Furthermore, the two racks are rotationally symmetrical about the gear at a radius of 180°.

[0014] 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.

[0015] The beneficial effects of this utility model are: (1) In this utility model, the tensile specimen clamp and the impact specimen clamp can automatically clamp and fix the billet for impact test and tensile test respectively, which can shorten the clamping time of the billet and improve the processing efficiency compared with the manual operation of bench vise clamping method. (2) In the impact test fixture, the V-shaped groove between the clamping seat and the clamping block is matched to stably clamp and fix the blanks of various outer diameter specifications within a certain range, so as to avoid the blanks from loosening during the processing. It has a wide range of applications. (3) In the tensile test fixture, after the billet is quickly centered by the short side centering mechanism, the first 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 at the same time by machine tool equipment to ensure processing accuracy and improve processing efficiency. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of the impact-stretching composite hydraulic clamp of this utility model.

[0017] Figure 2 This is a schematic diagram of the impact specimen clamp in this utility model.

[0018] Figure 3 This is a schematic diagram of the tensile specimen clamp in this utility model.

[0019] Figure 4 This is a schematic diagram of the short-side centering mechanism in this utility model.

[0020] Figure 5 This is a schematic diagram of the long side centering mechanism in this utility model. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] like Figures 1 to 3As shown, a special hydraulic clamp for impact and tensile composite is disclosed, including a base plate 1. A tensile specimen clamp 100 and an impact specimen clamp 200 are sequentially arranged on the top of the base plate 1 along its axis. The impact specimen clamp 200 has a base 201. A guide seat 204 is provided on the top of the base 201. A clamping block 206 is slidably arranged inside the guide seat 204. A clamping seat 203 corresponding to the clamping block 206 is provided on the top of the base 201. V-shaped clamping grooves 205 are correspondingly provided on the clamping seat 203 and the clamping block 206. A second clamping hydraulic cylinder 202 is provided on the base 201 to drive the clamping block 206 to move closer to or away from the clamping seat 203. The tensile specimen clamp 100 has a crossbeam 3 that is parallel to and fixedly mounted on the base plate 1. A corresponding lifting plate 7 is provided below the crossbeam 3. A first clamping hydraulic cylinder 8 is provided on the base plate 1 to drive the lifting plate 7 to move up and down. A short side centering mechanism 4 is provided below the lifting plate 7.

[0024] In the above embodiments, the tensile specimen clamp 100 and the impact specimen clamp 200 can automatically clamp and fix the billets for impact and tensile tests respectively, which can shorten the clamping time and improve processing efficiency compared with the manual clamping method of bench vise. In the impact specimen clamp 200, the V-shaped clamping groove 205 between the clamping seat 203 and the clamping block 206 can stably clamp and fix billets of various outer diameter specifications within a certain range, avoiding the loosening of the billets during processing, and has a wide range of applications. In the tensile specimen clamp 100, after the billet is quickly centered by the short side centering mechanism 4, the first clamping hydraulic cylinder 8 drives the lifting plate 7 to move upward to automatically clamp and fix the billet. Both sides of the billet can be processed simultaneously by machine tool equipment to ensure processing accuracy and improve processing efficiency.

[0025] In the above embodiments, as a specific implementation of the clamping groove 205, the clamping groove 205 is a V-shaped groove with an opening angle of 100°.

[0026] In some embodiments, two clamping grooves 205 are symmetrically arranged on one side of the clamping seat 203 near the clamping block 206, and two clamping blocks 206 corresponding to the two clamping grooves 205 are slidably arranged inside the guide seat 204. The two clamping blocks 206 cooperate with the two clamping grooves 205 on the clamping seat 203 to clamp and fix the two rod-shaped samples at the same time.

[0027] Furthermore, the clamping block 206 has a movable clamping surface 208 on one side where the clamping groove 205 is provided, and the clamping seat 203 has a fixed clamping surface 208 on one side where the clamping groove 205 is provided; the movable clamping surface 208 and the fixed clamping surface 208 cooperate to clamp and fix the rectangular parallelepiped sample.

[0028] In some embodiments, 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 provided at one end of the base frame 41. A baffle 43 is fixedly mounted on the top of the slider 42. The blank is placed on the top of the lifting plate 7. The two sliders 42 are synchronously driven by the rack 46 and the 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 first 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] In some embodiments, such as Figure 3 and 5 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 first 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.

[0033] 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.

[0034] In some embodiments, the two racks 46 are rotationally symmetrical about the gear at a radius of 180°.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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 specifically designed for impact-tension composite applications, characterized in that: The device includes a base plate, on the top of which, along its axis, are sequentially arranged a tensile specimen clamp and an impact specimen clamp. The impact specimen clamp has a base, on the top of which is a guide seat. A clamping block is slidably disposed inside the guide seat. A clamping seat corresponding to the clamping block is disposed on the top of the base. V-shaped clamping grooves are correspondingly disposed on the clamping seat and the clamping block. A second clamping hydraulic cylinder is disposed on the base to drive the clamping block closer to or away from the clamping seat. The tensile specimen clamp has a crossbeam fixedly mounted above the base plate, parallel to it. A corresponding lifting plate is disposed below the crossbeam. A first clamping hydraulic cylinder is disposed on the base plate to drive the lifting plate to move up and down. A short-side centering mechanism is disposed below the lifting plate.

2. The impact-tension composite hydraulic clamp according to claim 1, characterized in that: The clamping seat has two clamping grooves symmetrically arranged on one side near the clamping block, and the guide seat has two clamping blocks slidably arranged inside, each corresponding to one of the two clamping grooves.

3. The impact-tension composite hydraulic clamp according to claim 2, characterized in that: The clamping block has a movable clamping surface on one side where the clamping groove is provided, and the clamping seat has a fixed clamping surface on one side where the clamping groove is provided.

4. The impact-tension composite hydraulic clamp according to claim 1, characterized in that: 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.

5. The impact-tension composite hydraulic clamp according to claim 4, 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.

6. The impact-tension composite hydraulic clamp according to claim 4, 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.

7. The impact-tension composite hydraulic clamp according to claim 6, characterized in that: Both the crossbeam and the pad are matched to the shape of the standard specimen.

8. The impact-tension composite hydraulic clamp 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 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.

9. The impact-tension composite hydraulic clamp according to claim 4, characterized in that: The two racks are rotate symmetrical about the gear at a radius of 180°.

10. The impact-tension composite hydraulic clamp 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.

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