Flat plate tensile test piece turning clamp with rapid clamping structure

Abstract

The invention discloses a panel tensile test piece turning clamp with a rapid clamping structure, and relates to the technical field of machining equipment. According to the flat plate tensile test piece turning clamp with the rapid clamping structure, a driving block and a sliding block are fixedly connected with a connecting frame, the connecting frame is in an L shape, a fixing groove is formed in the upper portion of the inner side of the connecting frame, a positioning groove is formed in the rear portion of the inner side of the connecting frame, clamping plates are arranged on the inner side of the connecting frame, and the inner sides of the clamping plates are fixedly connected with non-slip mats; the tenon is fixedly connected above the clamping plate, the inserting tenon is fixedly connected to the rear end of the clamping plate, the inserting tenon is matched with the positioning groove, the fixing groove is matched with the tenon, and when the clamping plate is abraded or needs to be replaced with different specifications to adapt to different test pieces, the old clamping plate can be quickly disassembled only by pulling the clamping plate outwards, enabling the tenon to be separated from the fixing groove and enabling the inserting tenon to be separated from the positioning groove. When a new clamping plate is installed, reverse operation is conducted, the insertion tenon of the new clamping plate is aligned with the positioning groove to be inserted, and replacement can be rapidly completed.

Description

Technical Field

[0001] This invention relates to the field of machining equipment technology, and in particular to a turning fixture for flat tensile test specimens with a quick clamping structure. Background Technology

[0002] In the field of turning plate tensile test specimens, turning fixtures are core equipment for ensuring machining accuracy and efficiency, and their performance directly affects product quality and production efficiency. Currently, traditional turning fixtures generally adopt an integrated or fixed clamping plate structure. In practical applications, especially in the clamping plate replacement process, this structure has revealed many insurmountable problems.

[0003] From the perspective of operation process, when changing the clamping plate of a traditional fixture, the operator needs to use a variety of tools such as wrenches and screwdrivers to disassemble multiple fastening screws and nuts one by one. This not only significantly extends the non-processing time of the equipment and reduces production efficiency, but also the frequent disassembly operations can cause potential damage to other parts of the fixture, increasing equipment maintenance costs. At the same time, the complex disassembly and installation process requires a high level of technical proficiency from the operator, and new employees often need a long period of training to master it, which undoubtedly further exacerbates the consumption of labor costs.

[0004] As the manufacturing industry rapidly develops towards intelligence and efficiency, the processing demand for flat tensile test pieces is increasingly characterized by multiple varieties and small batches, which puts forward higher requirements for the versatility and flexibility of turning fixtures. At the same time, the intensification of market competition has also prompted enterprises to continuously pursue higher processing efficiency and lower production costs.

[0005] Against this backdrop, the limitations of traditional turning fixtures in terms of clamping plate replacement are increasingly becoming a bottleneck restricting the industry's development. Therefore, developing a turning fixture that can achieve rapid clamping plate replacement while ensuring clamping accuracy after replacement has become a key technical problem that urgently needs to be solved to improve the quality and efficiency of turning flat tensile test pieces and promote technological progress in the industry. Summary of the Invention

[0006] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a turning fixture for flat tensile test specimens with a quick clamping structure, which can solve the above-mentioned problems.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a turning fixture for flat tensile test specimens with a quick clamping structure, comprising a table and an operation panel, characterized in that: the operation panel is disposed on one side of the table, and a support leg is fixedly connected to the bottom of the table;

[0008] Fixed outer shells are fixedly connected to both sides of the platform, and protective outer shells are fixedly connected to the fixed outer shells. Turntables are rotatably connected to the inner side of each fixed outer shell. The turntables are provided with placement grooves, and guide grooves are provided on both sides of the placement grooves. Two sliders are slidably connected in the guide grooves.

[0009] Hydraulic cylinders are fixedly connected to the upper and lower ends of the placement groove. A hydraulic rod is slidably connected inside the hydraulic cylinder, and a drive block is fixedly connected to the hydraulic rod. A connecting frame is fixedly connected to the drive block and the slider. A fixing groove is opened on the upper inner side of the connecting frame, and a positioning groove is opened on the rear inner side of the connecting frame.

[0010] The connecting frame has a clamping plate on its inner side, and anti-slip pads are fixedly connected to the inner side of each clamping plate. A protruding tenon is fixedly connected to the top of the clamping plate, and a tenon is fixedly connected to the rear end of the clamping plate. The tenon fits into the positioning groove, and the fixing groove fits into the protruding tenon. A motor is fixedly connected inside the fixed housing, and the output end of the motor is fixedly connected to the turntable.

[0011] Preferably, the bottom of the support foot is provided with an anti-slip rubber pad.

[0012] Preferably, the hydraulic cylinder is connected to an external hydraulic pump via a hydraulic pipeline.

[0013] Preferably, the guide groove has a T-shaped cross-section, and the slider is adapted to the guide groove.

[0014] Preferably, the surface of the anti-slip mat is provided with a grid-like anti-slip pattern.

[0015] Preferably, the inner wall of the positioning groove is provided with an elastic sealing ring.

[0016] Preferably, the operation panel is equipped with control buttons for controlling the motor and hydraulic cylinder.

[0017] Preferably, the connecting frame is L-shaped.

[0018] Preferably, a protective outer shell is fixedly connected to the fixed outer shell.

[0019] Preferably, anti-slip pads are fixedly connected to the inner side of the clamps.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. This flat plate tensile test specimen turning fixture with quick clamping structure allows for quick removal of old clamps when the clamps are worn or need to be replaced with different specifications to fit different specimens. Simply pull the clamps outward to disengage the tenon from the fixing groove and the dowel from the positioning groove. When installing a new clamp, reverse the operation and insert the dowel of the new clamp into the positioning groove to quickly complete the replacement, greatly improving the versatility and maintenance efficiency of the fixture.

[0022] 2. This flat plate tensile test specimen turning fixture with quick clamping structure has a drive block and a slider fixedly connected by a connecting frame. The movement of the drive block will pull the slider to slide in the guide groove, which will cause the connecting frame to move the clamping plate towards the specimen until the anti-slip pad on the inner side of the clamping plate is tightly attached to the surface of the specimen, thus completing the initial clamping of the specimen. In this process, the slider can not only assist the movement of the connecting frame, but its cooperation with the guide groove can also effectively limit the shaking of the connecting frame, ensuring that the clamping plate remains stable during the sliding process, thereby improving the reliability of the clamping. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0024] Figure 1 This is a schematic diagram of a turning fixture for a flat tensile test specimen with a quick clamping structure according to the present invention;

[0025] Figure 2 This is a schematic diagram of a turning fixture for a flat tensile test specimen with a quick clamping structure according to the present invention;

[0026] Figure 3 This is a cross-sectional schematic diagram of a turning fixture for a flat tensile test specimen with a quick clamping structure according to the present invention.

[0027] Figure 4 This is an exploded view of a turning fixture for a flat tensile test specimen with a quick clamping structure according to the present invention.

[0028] Figure 5 This is an exploded view of a turning fixture for a flat tensile test specimen with a quick clamping structure according to the present invention.

[0029] Figure 6 This is a partial schematic diagram of a turning fixture for a flat tensile test specimen with a quick clamping structure according to the present invention.

[0030] Reference numerals: 1. Tabletop; 2. Control panel; 3. Support leg; 4. Fixed housing; 5. Protective housing; 6. Turntable; 7. Mounting slot; 8. Guide slot; 9. Hydraulic cylinder; 10. Hydraulic rod; 11. Slider; 12. Drive block; 13. Connecting frame; 14. Fixing slot; 15. Positioning slot; 16. Clamping plate; 17. Tenon; 18. Anti-slip pad; 19. Dowel; 20. Motor. Detailed Implementation

[0031] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0032] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0033] In the description of this invention, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0035] Please see Figure 1-6 The present invention provides a technical solution: a flat plate tensile test piece turning fixture with a quick clamping structure, including a table 1 and an operation panel 2, the operation panel 2 is disposed on one side of the table 1, and a support leg 3 is fixedly connected to the bottom of the table 1.

[0036] Operation Panel 2: The Sinumerik 828D is a CNC system designed for general-purpose CNC lathes and milling machines. It features a simple operating interface and rich functions, providing high machining accuracy and efficiency, and is suitable for the daily processing and production of small and medium-sized enterprises.

[0037] Fixed housings 4 are fixedly connected to both sides of the table 1. Protective housings 5 ​​are fixedly connected to the fixed housings 4. Turntables 6 are rotatably connected to the inner side of the fixed housings 4. The turntables 6 have placement grooves 7. Guide grooves 8 are provided on both sides of the placement grooves 7 on the turntables 6. Two sliders 11 are slidably connected in the guide grooves 8.

[0038] Hydraulic cylinders 9 are fixedly connected to the upper and lower ends of the placement groove 7. Hydraulic rods 10 are slidably connected inside hydraulic cylinders 9. Drive blocks 12 are fixedly connected to hydraulic rods 10.

[0039] Hydraulic Cylinder 9: The MA series are miniature cylinders, suitable for light-load, short-stroke applications and applications requiring high precision, such as experimental equipment and small clamps. The CD series are multi-section telescopic cylinders, which can achieve long strokes in space-constrained situations and are suitable for embedded equipment.

[0040] A connecting frame 13 is fixedly connected to the drive block 12 and the slider 11. The connecting frame 13 is L-shaped. A fixing groove 14 is opened on the upper inner side of the connecting frame 13, and a positioning groove 15 is opened on the rear inner side of the connecting frame 13.

[0041] The hydraulic cylinder 9 is controlled by the control panel 2. The hydraulic rod 10 inside the hydraulic cylinder 9 extends and drives the drive block 12 to move. Since the drive block 12 and the slider 11 are fixedly connected by the connecting frame 13, the movement of the drive block 12 will pull the slider 11 to slide in the guide groove 8, completing the initial clamping of the specimen. In this process, the slider 11 can not only assist the connecting frame 13 to move, but its cooperation with the guide groove 8 can also effectively limit the shaking of the connecting frame 13, thereby improving the reliability of clamping.

[0042] A clamping plate 16 is provided on the inner side of the connecting frame 13. Anti-slip pads 18 are fixedly connected to the inner side of the clamping plate 16. A tenon 17 is fixedly connected to the top of the clamping plate 16. A tenon 19 is fixedly connected to the rear end of the clamping plate 16. The tenon 19 fits into the positioning groove 15. The fixing groove 14 fits into the tenon 17.

[0043] When the clamping plate 16 is worn or needs to be replaced with a different specification to fit different test pieces, simply pull the clamping plate 16 outward to disengage the tenon 17 from the fixing groove 14 and the insertion tenon 19 from the positioning groove 15. This allows for quick removal of the old clamping plate 16. When installing the new clamping plate 16, the operation is reversed. Align the insertion tenon 19 of the new clamping plate 16 with the positioning groove 15 and insert it. This allows for quick replacement and greatly improves the versatility and maintenance efficiency of the fixture.

[0044] A motor 20 is fixedly connected inside the fixed housing 4, and the output end of the motor 20 is fixedly connected to the turntable 6.

[0045] Working principle: In the specimen clamping stage, the flat tensile test specimen is placed between two clamping plates 16. The control panel 2 controls the circuit system below the control panel 1 and starts the motor 20 inside the fixed housing 4. The output end of the motor 20 drives the turntable 6 to rotate, adjusting the placement slot 7 and related clamping components to a position that is easy to operate. Then, the hydraulic cylinder 9 is controlled by the control panel 2. The hydraulic rod 10 inside the hydraulic cylinder 9 extends and drives the drive block 12 to move. Since the drive block 12 and the slider 11 are fixedly connected by the connecting frame 13, the movement of the drive block 12 will pull the slider 11 to slide in the guide groove 8, thereby causing the connecting frame 13 to drive the clamping plate 16 to move towards the specimen until the anti-slip pad 18 on the inner side of the clamping plate 16 is tightly attached to the surface of the specimen, completing the initial clamping of the specimen. In this process, the slider 11 can not only assist the connecting frame 13 to move, but its cooperation with the guide groove 8 can also effectively limit the shaking of the connecting frame 13, ensuring that the clamping plate 16 remains stable during the sliding process, thereby improving the reliability of clamping.

[0046] Regarding positioning and adjustment, the tenon 17 on the clamping plate 16 engages with the fixing groove 14 on the upper inner side of the connecting frame 13, and the tenon 19 engages with the positioning groove 15 on the rear inner side of the connecting frame 13. This dual positioning structure not only ensures that the clamping plate 16 remains stable during clamping and does not shift, thus guaranteeing accurate positioning of the specimen in both horizontal and vertical directions, but also offers the advantage of quick replacement. When the clamping plate 16 becomes worn or needs to be replaced with a different specification to fit different specimens, simply pull the clamping plate 16 outwards to disengage the tenon 17 from the fixing groove 14 and the tenon 19 from the positioning groove 15. The old clamping plate 16 can be quickly disassembled and the new clamping plate 16 can be installed by reversing the operation. Align the tenon 19 of the new clamping plate 16 with the positioning groove 15 and insert it. This allows for quick replacement and greatly improves the versatility and maintenance efficiency of the fixture. At the same time, if it is necessary to make a fine adjustment to the angle of the specimen, the motor 20 can be restarted to drive the turntable 6 to rotate and adjust the specimen to a suitable machining angle. At this time, after the specimen is clamped and fixed, the main function of the motor 20 is to drive the turntable 6 to rotate, thereby causing the flat specimen to rotate as well, so that the turning equipment can perform turning processing on the flat plate from different angles to meet diverse processing needs.

[0047] Entering the turning stage, after the specimen is clamped and positioned, the table 1 provides a stable support platform for the turning operation, and the support feet 3 ensure the stability of the entire fixture during the machining process. The operator controls the turning equipment to process the specimen through the control panel 2. During the machining process, the clamping plate 16 and the anti-slip pad 18 are closely fitted to effectively prevent the specimen from sliding or displacing under the turning force, ensuring the accuracy and quality of the turning process. After the machining is completed, the hydraulic cylinder 9 is controlled by the control panel 2 to retract the hydraulic rod 10, so that the clamping plate 16 is released and the specimen can be quickly removed, completing a complete machining process.

[0048] Traditional turning fixtures often require manual adjustment of multiple components when clamping test pieces, which is cumbersome and time-consuming. However, this equipment controls the coordinated work of hydraulic cylinder 9 and motor 20 through the control panel 2, which enables rapid positioning and clamping of test pieces. The linkage design of hydraulic rod 10 driving drive block 12, slider 11 and connecting frame 13 allows clamping plate 16 to quickly fit against the surface of the test piece, greatly shortening the clamping time. At the same time, motor 20 drives turntable 6 to rotate, which can quickly adjust the clamping components to the appropriate position without repeated manual calibration, significantly improving the preparation efficiency before processing and greatly improving the overall production efficiency.

[0049] During the turning process, the stability of the specimen plays a decisive role in the machining accuracy. In this fixture, the tight fit between the slider 11 and the guide groove 8 effectively limits the shaking of the connecting frame 13, ensuring that the clamping plate 16 remains stable during movement. The tenon 17 and the dovetail 19 on the clamping plate 16 precisely fit with the positioning groove 15 of the connecting frame 13, ensuring the accurate positioning of the specimen in the horizontal and vertical directions. In addition, the anti-slip pad 18 on the inner side of the clamping plate 16 can effectively prevent the specimen from shifting under the action of turning force, providing a reliable guarantee for high-precision turning, reducing the scrap rate caused by unstable clamping, and lowering production costs.

[0050] Different specifications of flat plate tensile test specimens require different fixtures during processing. The clamping plate 16 of this equipment adopts a quick-change design. Through the cooperation of the tenon 17, the dovetail 19 and the positioning groove 15, clamping plates 16 of different specifications can be quickly disassembled and installed, which is convenient for adapting to various flat plate specimens. There is no need to customize fixtures for different specimens, which reduces the equipment procurement cost. At the same time, the motor 20 drives the turntable 6 to rotate, which can adjust the specimen to any processing angle to meet diverse processing needs and enhance the applicability of the equipment in different processing scenarios.

[0051] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A turning fixture for flat tensile test specimens with a quick-clamping structure, comprising a table (1) and an operation panel (2), characterized in that: The operation panel (2) is located on one side of the tabletop (1); Fixed housings (4) are fixedly connected to both sides of the platform (1). Turntables (6) are rotatably connected to the inner side of the fixed housings (4). A placement groove (7) is provided on the turntable (6). Guide grooves (8) are provided on both sides of the placement groove (7) on the turntable (6). Two sliders (11) are slidably connected in the guide grooves (8). Hydraulic cylinders (9) are fixedly connected to the upper and lower ends of the mounting groove (7). A hydraulic rod (10) is slidably connected inside the hydraulic cylinder (9). A drive block (12) is fixedly connected to the hydraulic rod (10). A connecting frame (13) is fixedly connected to the drive block (12) and the slider (11). A fixing groove (14) is opened on the upper inner side of the connecting frame (13). A positioning groove (15) is opened on the rear inner side of the connecting frame (13). The connecting frame (13) is provided with a clamping plate (16) on the inner side. A tenon (17) is fixedly connected above the clamping plate (16). A tenon (19) is fixedly connected to the rear end of the clamping plate (16). The tenon (19) fits into the positioning groove (15). The fixing groove (14) fits into the tenon (17). A motor (20) is fixedly connected inside the fixed outer shell (4). The output end of the motor (20) is fixedly connected to the turntable (6).

2. The turning fixture for flat tensile test specimens with a quick-clamping structure according to claim 1, characterized in that: The tabletop (1) is fixedly connected to a support leg (3) with an anti-slip rubber pad at the bottom.

3. The turning fixture for flat tensile test specimens with a quick-clamping structure according to claim 2, characterized in that: The hydraulic cylinder (9) is connected to an external hydraulic pump via hydraulic pipelines.

4. A turning fixture for flat tensile test specimens with a quick-clamping structure according to claim 3, characterized in that: The cross-section of the guide groove (8) is T-shaped, and the slider (11) is adapted to the guide groove (8).

5. A turning fixture for flat tensile test specimens with a quick-clamping structure according to claim 4, characterized in that: The surface of the anti-slip mat (18) is provided with a grid-like anti-slip pattern.

6. A turning fixture for flat tensile test specimens with a quick-clamping structure according to claim 5, characterized in that: The inner wall of the positioning groove (15) is provided with an elastic sealing ring.

7. A turning fixture for flat tensile test specimens with a quick-clamping structure according to claim 6, characterized in that: The operation panel (2) is equipped with control buttons for controlling the motor (20) and the hydraulic cylinder (9).

8. A turning fixture for flat tensile test specimens with a quick-clamping structure according to claim 7, characterized in that: The connecting frame (13) is L-shaped.

9. A turning fixture for flat tensile test specimens with a quick-clamping structure according to claim 8, characterized in that: A protective shell (5) is fixedly connected to the fixed shell (4).

10. A turning fixture for flat tensile test specimens with a quick-clamping structure according to claim 9, characterized in that: Anti-slip pads (18) are fixedly connected to the inner side of each clamp (16).

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