Specimen pre-cutting device

Abstract

The present invention relates to a specimen pre-cutting device for cutting semi-circular curved specimens, which includes a workbench, a moving frame, a lifting assembly, a rotating assembly and a cutting assembly; the cutting assembly is arranged on the workbench for cutting specimens; the moving frame is slidably arranged on the workbench to approach or move away from the cutting assembly along the X-axis direction; the lifting assembly includes a lifting plate and a moving plate, the moving plate is movably arranged on the lifting plate to move relative to the lifting plate along the Y-axis direction, and the lifting assembly is movably arranged on the moving frame to lift along the Z-axis direction where the axial direction of the moving frame is located; the rotating assembly is rotatably arranged on the moving plate and is used for rotating in the YOZ plane, and the specimen is arranged between the rotating assembly and the lifting plate and rotates with the rotation of the rotating assembly to achieve multi-angle and multi-position cutting of the specimen pre-cutting seam.

Description

Technical Field

[0001] The present invention relates to the technical field of road engineering, and particularly to a device for pre-cutting specimens, Background Art

[0002] In recent years, with the rapid development of road engineering technology and asphalt pavement testing technology, experimental instruments compatible with asphalt mixture specimens and concrete specimens have become increasingly perfect. However, the commonly used special cutting machines for asphalt mixture specimens on the market are usually used for cutting larger specimens such as plate-shaped specimens and cylindrical specimens.

[0003] For the pre-cutting seams at different positions and angles required for the fracture test of asphalt mixture semi-circular bend specimens, common cutting machines cannot cut the asphalt mixture semi-circular bend specimens at multiple angles and multiple positions. Summary of the Invention

[0004] In view of this, it is necessary to provide a device for pre-cutting specimens to cut semi-circular bend asphalt mixture specimens in response to the above problems. The device for pre-cutting specimens has a simple structure and is easy to operate, and can cut the pre-cutting seams of semi-circular bend specimens at multiple angles and multiple positions.

[0005] The present invention provides a device for pre-cutting specimens, which includes a workbench, a moving frame, a lifting assembly, a rotating assembly, and a cutting assembly;

[0006] The lifting assembly is movably arranged on the moving frame to lift along the axial direction of the moving frame. The rotating assembly is rotatably arranged on the lifting assembly, and the specimen is fixed on the rotating assembly;

[0007] The cutting assembly is arranged on the workbench for cutting specimens; the moving frame is slidably arranged on the workbench to approach or move away from the cutting assembly along the X-axis direction;

[0008] The lifting assembly includes a lifting plate and a moving plate. The moving plate is movably arranged on the lifting plate to move along the Y-axis direction relative to the lifting plate. The lifting assembly is movably arranged on the moving frame to lift along the Z-axis direction where the axial direction of the moving frame is located;

[0009] The rotating assembly is rotatably arranged on the moving plate and is used for rotating in the YOZ plane. The specimen is arranged between the rotating assembly and the lifting plate and rotates with the rotation of the rotating assembly to change the position of the specimen relative to the cutting assembly.

[0010] With such a setting, the movable frame is movably arranged on the workbench to drive the lifting assembly to approach or move away from the cutting assembly in the X-axis direction. Through the lifting plate of the lifting assembly, the rotating assembly is driven to move in the Z-axis direction, and through the moving plate of the lifting assembly, the rotating assembly is driven to move relative to the lifting plate in the Y-axis direction. Through the setting of the rotating assembly, the test piece is driven to rotate in the YOZ plane, so that the test piece can move in the X-axis direction, Z-axis direction and Y-axis direction and rotate in the YOZ plane at the same time, and the cutting of the test piece at different angles and positions can be realized.

[0011] In one embodiment, the rotating assembly includes a fixing member and a rotating member. The fixing member is movably installed on the rotating member to fix the test piece on the rotating member and rotate with the rotating member in the YOZ plane.

[0012] With such a setting, by movably fixing the fixing member on the rotating member, the position of the fixing member can be adjusted while the test piece is fixed on the rotating member, so as to facilitate the fixing of test pieces of different sizes by the fixing member.

[0013] In one embodiment, the moving plate is provided with a semicircular chute, and the rotating member is provided with a semicircular slide rail that cooperates with the semicircular chute, so that the rotating member is slidably connected to the moving plate.

[0014] With such a setting, through the cooperation between the semicircular chute formed on the moving plate and the slide rail provided on the rotating member, the moving plate and the rotating member can be slidably connected.

[0015] In one embodiment, a scale is provided on the moving plate, and a pointer is provided on the rotating member to match the scale.

[0016] With such a setting, by providing a scale on the moving plate and a pointer on the rotating member, the user has a reference angle during the process of adjusting the rotation of the rotating member, which is convenient for the user to adjust the rotation angle of the test piece.

[0017] In one embodiment, the rotating assembly further includes a fastener, and the fastener is used to fasten or loosen the rotating member to the moving plate.

[0018] With such a setting, through the fastener, it is convenient to adjust the position of the rotating member relative to the moving plate.

[0019] In one embodiment, the moving plate is further provided with a moving position, and the moving position is used to adjust the movement of the moving plate relative to the lifting plate in the YOZ plane.

[0020] With such a setting, a moving position is provided on the moving plate so that the moving plate can adjust its position relative to the lifting plate through the moving position, realizing the movement of the moving plate relative to the lifting plate in the YOZ plane.

[0021] In one embodiment, the lifting plate is provided with a lifting position, and the lifting plate is movably connected to the moving frame through the lifting position, so that the lifting plate moves in the Z-axis direction.

[0022] With such a setting, the lifting plate is movably connected to the moving frame through the lifting position, so that the lifting plate can move in the Z-axis direction while being connected to the moving frame.

[0023] In one embodiment, the cutting assembly includes a saw blade and a motor. The saw blade is disposed on the workbench for cutting a test piece;

[0024] The output shaft of the motor is connected to the saw blade to drive the saw blade to rotate.

[0025] With such a setting, by providing a motor and connecting the output shaft of the motor to the saw blade, the automation degree of the test piece pre-cutting slot device is improved, facilitating the operation of the user.

[0026] In one embodiment, the cutting assembly further includes a lifting frame. The motor is mounted on the lifting frame, and the lifting frame is used to control the lifting of the motor.

[0027] With such a setting, by providing a lifting frame, it is convenient for the saw blade connected to the output shaft of the motor to lift, and thus the cutting depth of the saw blade for the test piece can be adjusted.

[0028] In one embodiment, the workbench is provided with a moving frame chute, the moving frame chute is arranged parallel to the saw blade, and the moving frame is provided with a slide rail matching the moving frame chute.

[0029] With such a setting, by providing a moving frame chute on the workbench and a slide rail matching the moving frame chute on the moving frame, the moving frame can be slidably connected to the workbench through the moving frame chute and the slide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of a test piece pre-cutting slot device according to an embodiment provided by the present invention;

[0031] Figure 2 is Figure 1 a schematic structural diagram of the lifting plate in the embodiment;

[0032] Figure 3 is Figure 1 a schematic structural diagram of the moving plate in the embodiment;

[0033] Figure 4 For Figure 1 Structural schematic diagram of the rotating part in the embodiment;

[0034] Figure 5 For Figure 1 Schematic diagram of the omitted part of the structure in the embodiment;

[0035] Figure 6 For Figure 1 Structural schematic diagram of the cutting component in the embodiment.

[0036] Reference numerals: 10, workbench; 11, sliding groove of the moving frame; 20, moving frame; 30, lifting component; 31, lifting plate; 311, lifting position; 32, moving plate; 321, moving position; 322, semi-circular sliding groove; 323, dial; 33, tubular level; 40, rotating component; 41, fixing part; 411, vertical part; 412, bending part; 42, rotating part; 421, pointer; 422, semi-circular sliding rail; 43, fastening part; 50, cutting component; 51, saw blade; 52, motor; 53, lifting frame; 531, adjusting rod. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] It should be noted that when a component is referred to as being "installed on" another component, it can be directly installed on the other component or there may also be an intermediate component. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intermediate component at the same time. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there may be an intermediate component at the same time.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0040] In the field of road engineering technology, it is often necessary to conduct fracture tests on asphalt mixture specimens and concrete specimens. Currently, the special cutting devices in the existing technology are usually used for larger specimens such as plate-shaped specimens and cylindrical specimens, or although they can cut semi-circular specimens, they cannot perform multi-angle and multi-position cutting, which affects the accuracy of the test.

[0041] In view of the above technical problems, it is necessary for the present invention to provide a pre-cutting slot device, which can adjust the fixed position of the semi-circular specimen, change the position of the specimen relative to the cutting assembly 50, and thus realize the multi-angle and multi-position cutting of the specimen by the pre-cutting slot device.

[0042] For better description, as Figure 1 shown, the lifting direction of the lifting plate 31 is set as the Z-axis (i.e., the vertical direction or the up-and-down direction), the direction in which the moving frame 20 moves along the workbench 10 towards the saw blade 51 is set as the X-axis direction, and the direction perpendicular to the Z-axis and the X-axis is set as the Y-axis direction.

[0043] As Figure 1 shown, a pre-cutting slot device provided by the present invention includes a workbench 10, a moving frame 20, a lifting assembly 30, a rotating assembly 40 and a cutting assembly 50. The lifting assembly 30 is movably arranged on the moving frame 20 to lift along the axial direction of the moving frame 20. The rotating assembly 40 is rotatably arranged on the lifting assembly 30, and the specimen is fixed on the rotating assembly 40. The cutting assembly 50 is arranged on the workbench 10 for cutting the specimen. The moving frame 20 is slidably arranged on the workbench 10 to approach or move away from the cutting assembly 50 along the X-axis direction, and is used to drive the lifting assembly 30 and the rotating assembly 40 to approach or move away from the cutting assembly 50 along the X-axis direction.

[0044] Furthermore, the lifting assembly 30 includes a lifting plate 31 and a moving plate 32. The moving plate 32 is movably arranged on the lifting plate 31 to move relative to the lifting plate 31 along the Y-axis direction. The lifting assembly 30 is movably arranged on the moving frame 20 to lift along the Z-axis direction where the axial direction of the moving frame 20 is located. The rotating assembly 40 is rotatably arranged on the moving plate 32 and is used to rotate in the YOZ plane. The specimen is arranged between the rotating assembly 40 and the lifting plate 31 and rotates with the rotation of the rotating assembly 40 to change the position of the specimen relative to the cutting assembly 50.

[0045] It can be understood that by movably arranging the moving frame 20 on the workbench 10, the lifting assembly 30 is driven to approach or move away from the cutting assembly 50 in the X-axis direction. Through the lifting plate 31 of the lifting assembly 30, the rotating assembly 40 is driven to move in the Z-axis direction, and through the moving plate 32 of the lifting assembly 30, the rotating assembly 40 is driven to move relative to the lifting plate 31 in the Y-axis direction. Through the arrangement of the rotating assembly 40, the test piece is driven to rotate in the YOZ plane, so that the test piece can move in the X-axis direction, Z-axis direction and Y-axis direction and rotate in the YOZ plane at the same time, realizing the cutting of the test piece pre-cutting device at different angles and positions of the test piece.

[0046] Furthermore, the workbench 10 is generally square and is provided with moving frame chutes 11. The two moving frame chutes 11 are arranged in the X-axis direction and are respectively parallel to the positions where the saw blades 51 are located. Further, the moving frame 20 is a long rectangular shape, and the number is two, and it includes slide rails. The slide rails of the moving frame 20 are perpendicularly connected to the long rectangle, and the slide rails of the moving frame 20 can cooperate with the moving frame chutes 11 and can generate relative sliding. The slide rails of the two moving frames 20 are respectively arranged in the two moving frame chutes 11. Preferably, balls are arranged at the bottom of the moving frame chutes 11, thereby improving the convenience of the movement of the moving frame 20. By providing the moving frame chutes 11 on the workbench 10 and providing slide rails on the moving frame 20 that match the moving frame chutes 11, the moving frame 20 can be slidably connected to the workbench 10 through the moving frame chutes 11 and the slide rails of the moving frame 20.

[0047] As Figures 1 to 3 shown, the lifting assembly 30 includes a lifting plate 31 and a moving plate 32. Specifically, the lifting plate 31 is generally rectangular, and lifting positions 311 for cooperating with the moving frame 20 are provided at both ends of the lifting plate 31. For the convenience of understanding, one of the moving frames 20 and the lifting positions 311 is selected for description. The lifting positions 311 are sleeved on the moving frame 20 to achieve sliding connection with the moving frame 20. The lifting positions 311 are used to adjust the movement of the moving plate 32 relative to the workbench 10 in the Z-axis direction, so that the lifting plate 31 can achieve lifting relative to the workbench 10 in the Z-axis. It is worth mentioning that threaded holes are provided on the side walls of the lifting positions 311 of the lifting plate 31, so as to facilitate the fixing and loosening of the lifting plate 31 relative to the moving frame 20 by tightening or loosening nuts, and thus the lifting plate 31 can be adjusted relative to the moving frame 20. The present invention does not limit the shape of the lifting positions 311, as long as it can cooperate with the shape of the moving frame 20.

[0048] In addition, in order to facilitate the user to keep the lifting positions 311 at both ends of the lifting plate 31 on the same plane, a tube level 33 can also be provided on the lifting plate 31. It can be understood that the present invention does not limit the placement position of the tube level 33, as long as it is convenient for the user to observe.

[0049] Furthermore, the lifting assembly 30 further includes a moving plate 32, and the moving plate 32 is provided with a moving position 321 and a semi-circular chute 322. In this embodiment, the moving position 321 is a long through hole, and the moving position 321 is used to adjust the movement of the moving plate 32 relative to the lifting plate 31 in the YOZ plane. It is worth mentioning that the lifting plate 31 is correspondingly provided with a threaded hole corresponding to the moving position 321. By using a nut to pass through the moving position 321 and threadedly connect to the lifting plate 31, the moving plate 32 can be movably fixed to the lifting plate 31. Since the moving position 321 is long for the nut to adjust, the position relative to the lifting plate 31 can be changed, realizing the movement of the moving plate 32 relative to the lifting plate 31 in the YOZ plane. In order to fix the moving plate 32 more firmly to the lifting plate 31, two moving positions 321 are provided in this embodiment, and correspondingly two threaded holes are provided in the lifting plate 31.

[0050] In addition, the moving plate 32 is further provided with a semi-circular chute 322, and the semi-circular chute 322 is opened below the moving plate 32 for slidably connecting to the rotating assembly 40. It is worth mentioning that, in order to facilitate the user to move the moving plate 32 relative to the lifting plate 31 in the Y-axis direction, a scale can also be provided on the lifting plate 31 to facilitate the user to observe the relative position of the moving plate 32 and the lifting plate 31.

[0051] As Figure 5 shown, the rotating assembly 40 includes a rotating member 42, a fixing member 41 and a fastening member 43. The rotating member 42 is provided with a slide rail that cooperates with the semi-circular chute 322 of the moving plate 32. The semi-circular slide rail 422 is embedded in the semi-circular chute 322 and can slide relative to the semi-circular chute 322, so that the rotating member 42 is slidably connected to the moving plate 32. Specifically, the semi-circular chute 322 is a "T"-shaped groove, and the semi-circular slide rail 422 is a "T"-shaped convex rail, so that the semi-circular slide rail 422 can be firmly installed in the semi-circular chute 322, improving the clamping effect between the semi-circular chute 322 and the semi-circular slide rail 422, and at the same time improving the reliability of the pre-cutting seam device. It can be understood that the semi-circular chute 322 can also be provided on the rotating member 42, and the semi-circular slide rail 422 can be provided on the moving plate 32, as long as the sliding connection between the two can be realized. In addition, the semi-circular slide rail 422 is further provided with a threaded hole for installing the fixing member 41.

[0052] As Figures 1 to 4As shown, the fixing member 41 is movably mounted on the rotating member 42 to fix the test piece to the rotating member 42 and rotate with the rotating member 42 in the YOZ plane. By movably fixing the fixing member 41 to the rotating member 42, the position of the fixing member 41 can be adjusted while the test piece is fixed to the rotating member 42, so as to facilitate the fixing of test pieces of different sizes by the fixing member 41. Specifically, the fixing member 41 is generally in an "L" shape, including a vertical portion 411 and a bent portion 412. The vertical portion 411 is provided with a long oval hole in the Z-axis direction, so as to facilitate the fixing of the fixing member 41 to the rotating member 42 by using a nut to pass through the oval hole and be threadedly connected to the rotating member 42. Since it is a long oval hole, it also facilitates the movement of the fixing member 41. The bent portion 412 of the fixing member 41 is used to carry the test piece, and the accommodating space surrounded by the vertical portion 411, the bent portion 412, the semi-circular slide rail 422 of the moving plate 32 and the side wall of the lifting plate 31 facing the vertical portion 411 is used to place the test piece.

[0053] It can be understood that when the test piece is placed above the bent portion 412, the test piece is also placed in the accommodating space. By loosening the nut, the height of the vertical portion 411 in the Z-axis direction is adjusted to adapt to test pieces of different sizes. When the test piece fits against the semi-circular slide rail 422 and the bent portion 412, tightening the nut can complete the fixing of the fixing member 41 to the test piece. Then, by rotating the semi-circular slide rail 422 to rotate a certain angle in the YOZ plane, the rotation angle of the test piece can be adjusted. In order to ensure that the semi-circular slide rail 422 remains fixed after rotating a certain angle in the YOZ plane, the rotating assembly 40 further includes a fastener 43 to fix the slide rail to the moving plate 32 through the fastener 43.

[0054] In this embodiment, the fastener 43 uses a nut to fix the semi-circular slide rail 422 to the semi-circular chute 322. Specifically, a threaded hole is provided on the side wall of the moving plate 32, and a nut can pass through the threaded hole. By tightening the nut, the nut can abut against the semi-circular slide rail 422 to fix the semi-circular slide rail 422 to the semi-circular chute 322. At the same time, the semi-circular chute 322 also provides a supporting force for the semi-circular slide rail 422, thereby ensuring that the semi-circular slide rail 422 is firmly arranged in the semi-circular chute 322. When it is necessary to adjust the angle of the semi-circular slide rail 422 relative to the semi-circular chute 322, the nut is loosened so that the nut disengages from the semi-circular slide rail 422. Then, relative movement between the semi-circular slide rail 422 and the semi-circular chute 322 can be realized, so as to facilitate the adjustment of the position of the semi-circular slide rail 422 relative to the semi-circular chute 322. It can be understood that the fastener 43 can also be in other forms, as long as it can facilitate the user to fix and disengage the semi-circular slide rail 422 and the semi-circular chute 322 through the fastener 43.

[0055] It is worth mentioning that, for the convenience of the user to adjust the rotation angle of the test piece, a scale disk 323 is provided on the moving plate 32, and a pointer 421 is provided on the rotating member 42 to match the scale disk 323. By providing the scale disk 323 on the moving plate 32 and the pointer 421 on the rotating member 42, the user has a reference angle during the process of adjusting the rotation of the rotating member 42.

[0056] Specifically, when it is necessary to cut the pre-cut seam of the test piece at an angle of 10 degrees. According to Figures 1 to 4 As shown, loosen the fastener 43 so that the semi-circular slide rail 422 moves relative to the semi-circular chute 322. Observe the position where the pointer 421 of the semi-circular slide rail 422 corresponds to 10 degrees on the scale disk 323, and adjust the semi-circular slide rail 422 to the corresponding 10-degree position of the semi-circular chute 322. After the adjustment is completed, tighten the fastener 43 to fix the semi-circular slide rail 422 to the semi-circular chute 322 and obtain the required angle of 10 degrees for the pre-cut seam of the test piece. Then, by pushing the moving frame 20 to the cutting assembly 50, the test piece with the adjusted angle can be cut. When it is necessary to cut the pre-cut seam of the test piece at an angle of 80 degrees, then according to the above operation, adjust the semi-circular slide rail 422 to the corresponding 80-degree position of the semi-circular chute 322. When it is necessary to cut the pre-cut seam of the test piece at an angle of 90 degrees, then according to the above operation, adjust the semi-circular slide rail 422 to the corresponding 90-degree position of the semi-circular chute 322. Thus, the present invention realizes the cutting of the pre-cut seam at the required angle of the test piece, with simple operation and the ability to timely adjust the required angle.

[0057] As Figures 5 to 6 shown, the cutting assembly 50 includes a saw blade 51, a motor 52 and a lifting frame 53. The saw blade 51 is arranged on the workbench 10 for cutting the test piece; the motor 52 is installed on the mounting frame below the workbench 10, and the output shaft of the motor 52 is connected to the saw blade 51 to drive the saw blade 51 to rotate. By setting the motor 52 and connecting the output shaft of the motor 52 to the saw blade 51, the automation degree of the pre-cut seam device for the test piece is improved, which is convenient for the user to operate. The lifting frame 53 is also provided with an adjusting rod 531 for adjusting the height of the lifting frame 53. By setting the lifting frame 53, it is convenient to adjust the lifting of the saw blade 51 connected to the output shaft of the motor 52, and thus the cutting depth of the saw blade 51 relative to the test piece can be adjusted, so as to adjust the cutting depth of the test piece.

[0058] To better describe the use of the pre-cut seam device for the test piece in this embodiment and the use for the semi-circular test piece, please refer to Figures 1 to 6 .

[0059] When it is necessary to cut a specimen with an irregular shape and to cut the specimen at multiple angles and positions. First, place the specimen on the "L"-shaped fixing member 41, and support the specimen through the bending portion 412. Then, move the fixing member 41 in the Z-axis direction so that the specimen can abut against the inner wall of the semi-circular slide rail 422 without shaking. At this time, the nut can be tightened to fix the specimen in the accommodating space formed by the semi-circular slide rail 422, the fixing member 41, and the lifting plate 31.

[0060] Secondly, the moving plate 32 and the semi-circular slide rail 422 can be adjusted accordingly according to the angle and position of the pre-cutting seam to be cut. The specific method is as follows: roughly adjust the height of the lifting plate 31 according to the depth of the pre-cutting seam required for the specimen to be cut. Loosen the side wall nut of the lifting position 311 so that the lifting position 311 can slide relative to the moving frame 20. When adjusted to the appropriate height, observe the tube level 33 to ensure that the lifting plate 31 is in a horizontal state, and then tighten the nut of the lifting position 311 to fix the lifting plate 31. When it is necessary to cut the pre-cutting seam position of the specimen in the Y-axis direction, loosen the nut on the moving position 321 so that the moving plate 32 and the lifting plate 31 can move relative to each other. Refer to the scale on the lifting plate 31 and the scale disk 323 on the moving plate 32, and adjust the position of the moving plate 32 relative to the lifting plate 31 in the Y-axis direction as needed. After adjustment, tighten the nut to fix the moving plate 32 to the lifting plate 31. When it is necessary to cut the pre-cutting seam positions at different angles in the YOZ plane of the specimen, loosen the fastener 43 so that the semi-circular slide rail 422 can move relative to the semi-circular chute 322. Adjust the relative position between the semi-circular slide rail 422 and the semi-circular chute 322 by rotating the semi-circular slide rail 422. During the adjustment process, refer to the scale disk 323 on the moving plate 32 and the scale of the semi-circular slide rail 422. After adjustment, tighten the fastener 43 to fix the semi-circular slide rail 422 to the semi-circular chute 322. Thus, the adjustment of the cutting angle and position required for the specimen is completed.

[0061] Finally, start the motor 52, and push the moving frame 20 to move in the X-axis direction to cut the specimen. When it is necessary to adjust the depth of the pre-cutting seam of the specimen, the adjusting rod 531 on the lifting frame 53 can be adjusted to raise or lower the motor 52 to achieve the purpose of increasing or decreasing the depth of the pre-cutting seam.

[0062] It can be understood that for specimens of different shapes and different requirements for the angle, position, and depth of the pre-cutting seam, the rotating assembly, the lifting assembly, and the cutting assembly can be adaptively operated according to actual needs. The above operation method is only one of them.

[0063] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0064] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A specimen pre-cutting device for cutting semi-circular curved specimens, characterized in that, Comprising: A workbench (10), a moving frame (20), a lifting assembly (30), a rotating assembly (40) and a cutting assembly (50); The lifting assembly (30) is movably arranged on the moving frame (20) to lift along the axial direction of the moving frame (20), the rotating assembly (40) is rotatably arranged on the lifting assembly (30), and the test piece is fixed on the rotating assembly (40); The cutting assembly (50) is arranged on the workbench (10) for cutting the test piece; the moving frame (20) is slidably arranged on the workbench (10) to approach or move away from the cutting assembly (50) along the X-axis direction; The lifting assembly (30) includes a lifting plate (31) and a moving plate (32), the moving plate (32) is movably arranged on the lifting plate (31) to move along the Y-axis direction relative to the lifting plate (31), the moving plate (32) is further provided with a moving position (321), and the moving position (321) is used to adjust the movement of the moving plate (32) relative to the lifting plate (31) in the YOZ plane. The lifting assembly (30) is movably arranged on the moving frame (20) to lift along the Z-axis direction where the axial direction of the moving frame (20) is located; The rotating assembly (40) is rotatably arranged on the moving plate (32) and is used to rotate in the YOZ plane. The rotating assembly (40) includes a fixing member (41) and a rotating member (42). The fixing member (41) is movably fixed on the rotating member (42) to fix the test piece on the rotating member (42) and rotate with the rotating member (42) in the YOZ plane. The moving plate (32) is provided with a semi-circular chute (322), and the rotating member (42) is provided with a semi-circular slide rail (422) matching the semi-circular chute (322) so that the rotating member (42) is slidably connected to the moving plate (32). The test piece is arranged between the rotating assembly (40) and the lifting plate (31) and rotates with the rotation of the rotating assembly (40) to change the position of the test piece relative to the cutting assembly (50). The cutting assembly (50) includes a saw blade (51), and the saw blade (51) is arranged on the workbench (10) for cutting the test piece. The workbench (10) is provided with a moving frame chute (11), and the moving frame chute (11) is arranged parallel to the saw blade (51). The moving frame (20) is provided with a slide rail matching the moving frame chute (11).

2. The test piece pre-cutting device according to claim 1, wherein The moving plate (32) is provided with a dial (323), and the rotating member (42) is provided with a pointer (421) to match the dial (323).

3. The specimen pre-cutting slot device according to claim 1, characterized in that, The rotating assembly (40) further includes a fastener (43), and the fastener (43) is used to fasten or loosen the rotating member (42) to the moving plate (32).

4. The test piece pre-cutting device according to claim 1, characterized in that The lifting plate (31) is provided with a lifting position (311), and the lifting plate (31) is movably connected to the moving frame (20) through the lifting position (311) so that the lifting plate (31) moves in the Z-axis direction.

5. The specimen pre-cutting device according to claim 1, characterized in that The cutting assembly (50) includes a motor (52); The output shaft of the motor (52) is connected to the saw blade (51) to drive the saw blade (51) to rotate.

6. The specimen pre-cutting slot device according to claim 5, characterized in that, The cutting assembly (50) further includes a lifting frame (53), the motor (52) is installed on the lifting frame (53), and the lifting frame (53) is used to control the lifting of the motor (52).

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