High-precision automatic numerical control shearing machine

Abstract

The high-precision automatic numerical control shearing machine comprises a machining table, a metal plate is placed above the machining table, a U-shaped frame is fixedly connected to the top of the machining table, a motor is fixedly connected to the front end of the U-shaped frame, and a second rotating rod is fixedly connected to the output end of the motor; a cam is fixedly connected to the outer wall of the second rotating rod, the outer wall of the cam is sleeved with a frame body, a mounting plate is fixedly connected to the bottom of the frame body, a shear knife is fixedly connected to the bottom of the mounting plate, and a limiting mechanism is arranged on the mounting plate. The push plate and the metal plate can be driven by the motor to move at equal intervals, the moving distances are equal, and the cutting lengths are equal; the cutting length can be changed through the speed change mechanism to meet different use requirements; and the metal plate can be limited through the limiting mechanism, the stability of the metal plate during shearing is guaranteed, and the shearing precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of shearing machines, and in particular to a high-precision automated numerically controlled shearing machine. Background Art

[0002] Shearing machine is a kind of forging machine, mainly used in metal processing industry. Shearing machine is a kind of shearing equipment widely used in mechanical processing, which can apply shearing force to metal plates of various thicknesses to break and separate the plates according to the required size.

[0003] When existing high-precision automated CNC shearing machines are used to shear metal plates, they generally need to shear a long metal plate into multiple short metal plates. However, there is a problem of unequal shearing spacing between multiple metal plates, and when the cutting length needs to be changed, another machine is required for shearing, which increases the cost. Therefore, we designed a high-precision automated CNC shearing machine to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the prior art, and to propose a high-precision automated CNC shearing machine, which can drive the push plate and the metal sheet to move at equal intervals through a motor, and each movement distance is equal, and the cutting length is equal; the cutting length can be changed through a speed change mechanism to meet different usage needs; the metal sheet can be limited by a limiting mechanism to ensure the stability of the metal sheet during shearing and improve the shearing accuracy.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A high-precision automated CNC shearing machine comprises a processing table, a metal plate is placed above the processing table, the top of the processing table is fixedly connected to a U-shaped frame, the front end of the U-shaped frame is fixedly connected to a motor, the output end of the motor is fixedly connected to a second rotating rod, the outer wall of the second rotating rod is fixedly connected to a cam, the outer wall of the cam is sleeved with a frame, the bottom of the frame is fixedly connected to a mounting plate, the bottom of the mounting plate is fixedly connected to a shearing knife, a limiting mechanism is provided on the mounting plate, the top of the processing table is fixedly connected to a fixing plate, the fixing plate is provided with a speed changing mechanism, the bottom of the processing table is fixedly connected to two vertical plates, the two vertical plates are commonly penetrated by a threaded rod rotatably connected thereto, the outer wall of the threaded rod is sleeved with a moving block threadedly connected thereto, the moving block penetrates the processing table and is slidably connected thereto, and the top of the moving block is fixedly connected with a push plate.

[0006] The transmission mechanism comprises a sliding opening which runs through a fixed plate, the inner top of the sliding opening being fixedly connected to a hydraulic rod, the output end of the hydraulic rod being fixedly connected to a lifting block, the rear end of the lifting block being rotatably connected to the first rotating rod, the end of the first rotating rod being fixedly connected to a hexagonal block, the outer wall of the hexagonal block being fixedly connected to a plurality of electric telescopic rods distributed at equal intervals, the output end of each electric telescopic rod being fixedly connected to a pulley block, the outer walls of the plurality of pulley blocks and the outer walls of the threaded rod being jointly sleeved with a transmission belt, the outer wall of the first rotating rod being fixedly connected to an active bevel gear, the active bevel gear being meshed with a driven bevel gear, the top of the driven bevel gear being fixedly connected to a hollow rod, the hollow rod being penetrated by a square rod which is slidably connected thereto, the top of the square rod being coaxially fixedly connected to the rotating rod, the top of the rotating rod being fixedly connected to the first bevel gear, the first bevel gear being meshed with a second bevel gear, and the second bevel gear being coaxially fixedly connected to the rear end of the second rotating rod.

[0007] Preferably, the limiting mechanism includes a clamping plate arranged under the mounting plate, and two T-shaped rods are fixedly connected to the top of the clamping plate. The two T-shaped rods both pass through the mounting plate and are slidably connected thereto. The outer wall of each T-shaped rod is sleeved with a spring, and the two ends of each spring are respectively fixedly connected to the mounting plate and the clamping plate.

[0008] Preferably, a slide opening is penetrated on the processing table, the moving block penetrates the slide opening and is slidably connected thereto, and the front end of the push plate is arranged to abut against the rear end of the metal plate.

[0009] Preferably, a plurality of convex strips are provided at one end of the pulley block away from the hexagonal block, a pulley is fixedly connected to the outer wall of the threaded rod, the transmission belt is sleeved on the outer walls of the pulley and a plurality of pulley blocks, and a plurality of grooves are provided on the inner wall of the transmission belt.

[0010] Preferably, the rear end of the lifting block is fixedly connected to a first limit block, the hollow rod passes through the first limit block and is rotatably connected thereto, the rear end of the fixed plate is fixedly connected to a second limit block, and the rotating rod passes through the second limit block and is rotatably connected thereto.

[0011] Preferably, two U-shaped rods are fixedly connected to the inner wall of the U-shaped frame, and both of the two U-shaped rods pass through the mounting plate and are slidably connected thereto.

[0012] Preferably, an L-shaped plate is fixedly connected to the rear end of the U-shaped frame, the second rotating rod passes through the L-shaped plate and is rotatably connected thereto, and the second rotating rod passes through the fixed plate and is rotatably connected thereto.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The output end of the motor drives the second rotating rod to rotate, so that the moving block and the push plate move forward to push the metal sheet to move. When the second bevel gear rotates one circle, it will periodically mesh with the first bevel gear to drive the first bevel gear to rotate intermittently, so that the metal sheet is pushed periodically. When it is pushed, the shear knife moves up, and when it is not pushed, the shear knife moves down for shearing.

[0014] 2. The protruding part of the cam is driven to contact the inner bottom of the frame by rotating the second rotating rod, driving the frame, mounting plate, shear knife, T-bar, spring and clamp plate to move downward. During this process, the clamp plate first contacts the metal sheet, and the T-bar slides on the mounting plate. During this process, the spring is compressed, and the metal sheet to be sheared is limited to keep it stable during subsequent shearing, thereby improving the shearing accuracy.

[0015] 3. The staff can start the electric telescopic rod to drive the pulley block to move, and then adjust the distance between the pulley block and the hexagonal block, thereby driving the change in the diameter of the circle composed of multiple pulley blocks. In this process, the hydraulic rod drives the lifting block to move up and down. By changing the diameter of the circle composed of multiple pulley blocks, the threaded rod can be driven to rotate multiple times, and the number of rotations of the threaded rod changes, thereby adjusting the distance that the moving block and the push plate push the metal plate. The sheared distance of the metal plate can be adjusted according to needs to meet different shearing needs.

[0016] To sum up, the present invention can drive the push plate and the metal plate to move at equal intervals through the motor, and the moving distance and cutting length are equal each time; the cutting length can be changed through the speed change mechanism to meet different usage needs; the metal plate can be limited by the limiting mechanism to ensure the stability of the metal plate during shearing and improve the shearing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view structural schematic diagram of a high-precision automated CNC shearing machine proposed by the present invention; Figure 2 This is a schematic diagram of the front view structure of a high-precision automated CNC shearing machine proposed by the present invention without the motor.

[0018] Figure 3 A first structural schematic diagram of a rear view of a high-precision automated CNC shearing machine proposed by the present invention; Figure 4 A second structural schematic diagram of a rear view of a high-precision automated CNC shearing machine proposed by the present invention; Figure 5 for Figure 3 A magnified view of the structure in the middle.

[0019] In the figure: 1 processing table, 2 metal plate, 3 vertical plate, 4 motor, 5 threaded rod, 6 moving block, 7 push plate, 8 transmission belt, 9 hexagonal block, 10 electric telescopic rod, 11 pulley block, 12 first rotating rod, 13 lifting block, 14 hydraulic rod, 15 fixed plate, 16 active bevel gear, 17 driven bevel gear, 18 hollow rod, 19 square rod, 20 rotating rod, 21 first bevel gear, 22 second bevel gear, 23 second rotating rod, 24 U-shaped frame, 25 cam, 26 frame, 27 mounting plate, 28 shear knife, 29 U-shaped rod, 30 T-shaped rod, 31 spring, 32 clamping plate, 33 L-shaped plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-Figure 5 A high-precision automated CNC shearing machine comprises a processing table 1, a metal plate 2 is placed above the processing table 1, a U-shaped frame 24 is fixedly connected to the top of the processing table 1, a motor 4 is fixedly connected to the front end of the U-shaped frame 24, the motor 4 and the U-shaped frame 24 are connected and fixed by two brackets, a second rotating rod 23 is fixedly connected to the output end of the motor 4, an L-shaped plate 33 is fixedly connected to the rear end of the U-shaped frame 24, the second rotating rod 23 penetrates the L-shaped plate 33 and is rotatably connected thereto, the second rotating rod 23 penetrates the fixed plate 15 and is rotatably connected thereto, so as to ensure the stable rotation of the second rotating rod 23.

[0022] A cam 25 is fixedly connected to the outer wall of the second rotating rod 23, and a frame 26 is sleeved on the outer wall of the cam 25. A mounting plate 27 is fixedly connected to the bottom of the frame 26. Two U-shaped rods 29 are fixedly connected to the inner wall of the U-shaped frame 24. Both U-shaped rods 29 penetrate the mounting plate 27 and are slidably connected thereto. The mounting plate 27 can be stably raised and lowered by the arranged U-shaped rods 29. A shearing knife 28 is fixedly connected to the bottom of the mounting plate 27. When the cam 25 rotates one circle, the shearing knife 28 is driven to rise and fall. When the shearing knife 28 moves downward, it shears the stationary metal sheet 2. When the shearing knife 28 moves upward, it pushes the metal sheet 2 to move it, thereby completing the automated shearing operation.

[0023] A limiting mechanism is provided on the mounting plate 27, and the limiting mechanism includes a clamping plate 32 arranged below the mounting plate 27. Two T-bars 30 are fixedly connected to the top of the clamping plate 32. The two T-bars 30 both penetrate the mounting plate 27 and are slidably connected thereto. A spring 31 is sleeved on the outer wall of each T-bar 30. The two ends of each spring 31 are respectively fixedly connected to the mounting plate 27 and the clamping plate 32. When the mounting plate 27 drives the shearing knife 28 to move downward, the clamping plate 32 located below the shearing knife 28 first contacts and tightens against the upper surface of the metal sheet 2. During this process, the T-bar 30 slides on the mounting plate 27 and the spring 31 is compressed, thereby ensuring the stability of the metal sheet 2 during subsequent shearing.

[0024] The top of the processing table 1 is fixedly connected with a fixed plate 15, and the fixed plate 15 is provided with a speed change mechanism, which includes a sliding port set through the fixed plate 15, and the inner top of the sliding port is fixedly connected with a hydraulic rod 14, and the output end of the hydraulic rod 14 is fixedly connected with a lifting block 13, and the rear end of the lifting block 13 is rotatably connected with a first rotating rod 12, and the end of the first rotating rod 12 is fixedly connected with a hexagonal block 9, and the outer wall of the hexagonal block 9 is fixedly connected with a plurality of electric telescopic rods 10 distributed at equal intervals, and the output end of each electric telescopic rod 10 is fixedly connected with a pulley block 11. The outer walls of the plurality of pulley blocks 11 and the outer wall of the threaded rod 5 are jointly sleeved with a transmission belt 8. The end of the pulley block 11 away from the hexagonal block 9 is provided with a plurality of convex strips. The outer wall of the threaded rod 5 is fixedly connected with a pulley. The transmission belt 8 is sleeved on the outer walls of the pulley and the plurality of pulley blocks 11. The inner wall of the transmission belt 8 is provided with a plurality of grooves. The plurality of pulley blocks 11 form a circular body. By changing the diameter of the constituent circular body, the distance that the metal plate 2 is pushed can be changed to meet different usage needs. This technology can refer to the continuously variable transmission system of an automobile, and can realize the change of the transmission ratio.

[0025] The outer wall of the first rotating rod 12 is fixedly connected to a driving bevel gear 16, and the driving bevel gear 16 is meshed with a driven bevel gear 17. The top of the driven bevel gear 17 is fixedly connected to a hollow rod 18. The rear end of the lifting block 13 is fixedly connected to a first limit block. The hollow rod 18 penetrates the first limit block and is rotatably connected thereto. A square rod 19 is penetrated through the hollow rod 18 and is slidably connected thereto. The top of the square rod 19 is coaxially fixedly connected to a rotating rod 20. The rear end of the fixed plate 15 is fixedly connected to a second limit block. The rotating rod 20 penetrates the second limit block. The limit block is rotatably connected thereto, a first bevel gear 21 is fixedly connected to the top of the rotating rod 20, the first bevel gear 21 is meshed with a second bevel gear 22, the second bevel gear 22 is coaxially fixedly connected to the rear end of the second rotating rod 23, when the diameter of the circular body composed of the multiple pulley blocks 11 changes, the hydraulic rod 14 can be started to drive the lifting block 13 to move up and down, so that the transmission belt 8 is firmly covered on the outer wall of the pulley and the multiple pulley blocks 11, so that the transmission is stable, and during this process, the square rod 19 and the hollow rod 18 slide relative to each other.

[0026] Two vertical plates 3 are fixedly connected to the bottom of the processing table 1, and a threaded rod 5 rotatably connected to the two vertical plates 3 is penetrated by the two vertical plates 3. The outer wall of the threaded rod 5 is sleeved with a moving block 6 threadedly connected to the processing table 1. The moving block 6 penetrates the processing table 1 and is slidably connected to it. A slideway opening is penetrated on the processing table 1, and the moving block 6 penetrates the sliding opening and is slidably connected to it. A push plate 7 is fixedly connected to the top of the moving block 6. The front end of the push plate 7 is set to abut against the rear end of the metal plate 2. The push plate 7 is driven by the intermittent rotation of the threaded rod 5 to intermittently push the metal plate 2 to move, thereby realizing the equidistant shearing of the metal plate 2.

[0027] A series of automated processing operations of this device are completed through the CNC system, and the opening and closing of various electrical components are controlled by an external PLC control system.

[0028] In the present invention, the staff first places the metal sheet 2 on the processing table 1, and presses the rear end of the metal sheet 2 against the front end of the push plate 7. At this time, the motor 4 is started, and the second rotating rod 23 is driven to rotate through the output end of the motor 4. The second rotating rod 23 rotates to drive the second bevel gear 22, the first bevel gear 21, the rotating rod 20, the square rod 19, the hollow rod 18, the driven bevel gear 17, the active bevel gear 16, the first rotating rod 12, the hexagonal block 9, a plurality of electric telescopic rods 10, the pulley block 11, the transmission belt 8, and the threaded rod 5 to rotate, so that the moving block 6 and the push plate 7 move forward to push the metal sheet 2 to move. When the second bevel gear 22 rotates one circle, it will periodically mesh with the first bevel gear 21 to drive the first bevel gear 21 to rotate intermittently, so that the metal sheet 2 is periodically pushed. When pushed, the shearing knife 28 moves up, and when not pushed, the shearing knife 28 moves down for shearing.

[0029] When the first bevel gear 21 is meshed with the second bevel gear 22, it drives the first bevel gear 21, the rotating rod 20, the square rod 19, the hollow rod 18, the driven bevel gear 17, the driving bevel gear 16, the first rotating rod 12, the hexagonal block 9, the multiple electric telescopic rods 10, the pulley block 11, the transmission belt 8, and the threaded rod 5 to rotate, thereby pushing the moving block 6, the push plate 7 and the metal sheet 2 to move forward. During this process, the protruding part of the cam 25 contacts the inner top of the frame 26 to drive the frame 26, the mounting plate 27, and the shear knife 28 to move upward without affecting the movement of the metal sheet 2; When the first bevel gear 21 is not meshed with the second bevel gear 22, the first bevel gear 21, the rotating rod 20, the square rod 19, the hollow rod 18, the driven bevel gear 17, the active bevel gear 16, the first rotating rod 12, the hexagonal block 9, the multiple electric telescopic rods 10, the pulley block 11, the transmission belt 8, and the threaded rod 5 remain stationary, so that the metal sheet 2 is no longer pushed and remains stationary, and the second rotating rod 23 continues to rotate to drive the protruding part of the cam 25 to contact the inner bottom of the frame 26 to drive the frame 26, the mounting plate 27, the shearing knife 28, the T-bar 30, the spring 31 and the clamping plate 32 to move downward. During this process, the clamping plate 32 first contacts the metal sheet 2, and the T-bar 30 slides on the mounting plate 27. During this process, the spring 31 is compressed, and the metal sheet 2 to be sheared is limited so that it remains stable during subsequent shearing. The subsequent shearing knife 28 continues to move downward to shear the limited metal sheet 2; After the shearing is completed, the second rotating rod 23 rotates to drive the protruding part of the cam 25 to contact the inner top of the frame 26, driving the frame 26, the mounting plate 27, the shearing knife 28, the T-bar 30, the spring 31 and the clamping plate 32 to move upward until the shearing knife 28 and the clamping plate 32 are no longer in contact with the metal sheet 2. At this time, the second rotating rod 23 rotates to make the second bevel gear 22 engage with the second rotating rod 23, thereby driving the push plate 7 to push the metal sheet 2 to move, so that the metal sheet 2 is pushed a certain distance, and the equal length shearing of the metal sheet 2 is completed.

[0030] The staff can start the electric telescopic rod 10 to drive the pulley block 11 to move, and then adjust the distance between the pulley block 11 and the hexagonal block 9, thereby driving the diameter of the circle formed by the multiple pulley blocks 11 to change, and in this process, the hydraulic rod 14 drives the lifting block 13 to move up and down, and by changing the diameter of the circle formed by the multiple pulley blocks 11, the threaded rod 5 can be driven to rotate multiple times, and the number of rotations of the threaded rod 5 changes, thereby adjusting the distance that the moving block 6 and the push plate 7 push the metal sheet 2, and adjusting the sheared distance of the metal sheet 2 as needed to meet different shearing needs.

[0031] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-precision automated CNC shearing machine, comprising a processing table (1), characterized in that: A metal plate (2) is placed above the processing table (1); a U-shaped frame (24) is fixedly connected to the top of the processing table (1); a motor (4) is fixedly connected to the front end of the U-shaped frame (24); a second rotating rod (23) is fixedly connected to the output end of the motor (4); a cam (25) is fixedly connected to the outer wall of the second rotating rod (23); a frame (26) is sleeved on the outer wall of the cam (25); a mounting plate (27) is fixedly connected to the bottom of the frame (26); a shearing knife (27) is fixedly connected to the bottom of the mounting plate (27); 8), a limiting mechanism is provided on the mounting plate (27), a fixing plate (15) is fixedly connected to the top of the processing table (1), a speed change mechanism is provided on the fixing plate (15), two vertical plates (3) are fixedly connected to the bottom of the processing table (1), a threaded rod (5) rotatably connected to the two vertical plates (3) is passed through the two vertical plates (3), a moving block (6) threadedly connected to the threaded rod (5) is sleeved on the outer wall of the threaded rod (5), the moving block (6) passes through the processing table (1) and is slidably connected to the processing table (1), and a push plate (7) is fixedly connected to the top of the moving block (6).

2. A high-precision automated CNC shearing machine according to claim 1, characterized in that: The speed change mechanism comprises a sliding opening arranged through a fixed plate (15); a hydraulic rod (14) is fixedly connected to the inner top of the sliding opening; an output end of the hydraulic rod (14) is fixedly connected to a lifting block (13); a rear end of the lifting block (13) is rotatably connected to a first rotating rod (12); an end of the first rotating rod (12) is fixedly connected to a hexagonal block (9); a plurality of electric telescopic rods (10) distributed at equal intervals are fixedly connected to the outer wall of the hexagonal block (9); the output end of each electric telescopic rod (10) is fixedly connected to a pulley block (11); the outer walls of the plurality of pulley blocks (11) and the outer wall of the threaded rod (5) are jointly sleeved with a transmission A driving belt (8), an outer wall of the first rotating rod (12) is fixedly connected to a driving bevel gear (16), the driving bevel gear (16) is meshed with a driven bevel gear (17), the top of the driven bevel gear (17) is fixedly connected to a hollow rod (18), a square rod (19) is passed through the hollow rod (18) and is slidably connected thereto, the top of the square rod (19) is coaxially fixedly connected to a rotating rod (20), the top of the rotating rod (20) is fixedly connected to a first bevel gear (21), the first bevel gear (21) is meshed with a second bevel gear (22), and the second bevel gear (22) is coaxially fixedly connected to the rear end of the second rotating rod (23).

3. A high-precision automated CNC shearing machine according to claim 1, characterized in that: The limiting mechanism comprises a clamping plate (32) arranged below the mounting plate (27), the top of the clamping plate (32) being fixedly connected to two T-shaped rods (30), the two T-shaped rods (30) both passing through the mounting plate (27) and being slidably connected thereto, the outer wall of each T-shaped rod (30) being sleeved with a spring (31), the two ends of each spring (31) being fixedly connected to the mounting plate (27) and the clamping plate (32) respectively.

4. A high-precision automated CNC shearing machine according to claim 1, characterized in that: The processing table (1) is provided with a slide opening, the moving block (6) passes through the slide opening and is slidably connected thereto, and the front end of the push plate (7) is arranged to abut against the rear end of the metal plate (2).

5. A high-precision automated CNC shearing machine according to claim 2, characterized in that: The end of the pulley block (11) away from the hexagonal block (9) is provided with a plurality of convex strips, the outer wall of the threaded rod (5) is fixedly connected to a pulley, the transmission belt (8) is sleeved on the outer walls of the pulley and the plurality of pulley blocks (11), and the inner wall of the transmission belt (8) is provided with a plurality of grooves.

6. A high-precision automated CNC shearing machine according to claim 2, characterized in that: The rear end of the lifting block (13) is fixedly connected to a first limit block, the hollow rod (18) passes through the first limit block and is rotatably connected thereto, the rear end of the fixed plate (15) is fixedly connected to a second limit block, and the rotating rod (20) passes through the second limit block and is rotatably connected thereto.

7. A high-precision automated CNC shearing machine according to claim 1, characterized in that: Two U-shaped rods (29) are fixedly connected to the inner wall of the U-shaped frame (24), and the two U-shaped rods (29) both penetrate the mounting plate (27) and are slidably connected thereto.

8. The high-precision automated CNC shearing machine according to claim 1, characterized in that: The rear end of the U-shaped frame (24) is fixedly connected to an L-shaped plate (33), the second rotating rod (23) passes through the L-shaped plate (33) and is rotatably connected thereto, and the second rotating rod (23) passes through the fixed plate (15) and is rotatably connected thereto.

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