Numerical control bending machine

Abstract

The utility model relates to the technical field of bending, in particular to a numerical control bending machine. According to the technical scheme, the device comprises a workbench, a first clamp and a second clamp, sliding grooves are formed in the two ends of the front end in the workbench, the first clamp is arranged at one ends in the sliding grooves, the second clamp is arranged at the other ends in the sliding grooves, a bottom plate is arranged in the first clamp, and a first rotating shaft is connected to the top surface of the bottom plate; a clamping frame is connected to the surface of the first rotating shaft, a shaft sleeve penetrates through the top end of the clamping frame, a shaft rod is inserted into the shaft sleeve, and a rotating handle is fixed to the top end of the shaft rod. The two movable clamps are arranged at the two ends of the top surface of the workbench, the clamps can be matched with the two ends of workpieces of different sizes for clamping and fixing, the two ends of the workpieces can be clamped and fixed by the clamping plates after being placed in the clamps, and when the middle of the workpieces is impacted by the punch to be bent, the two clamps can move and rotate along with bending of the workpieces. And two ends of the workpiece are prevented from disengaging from the clamp.

Description

Technical Field

[0001] The utility model relates to the technical field of bending, in particular to a numerical control bending machine. Background Art

[0002] CNC bending machine uses the equipped mold (general or special mold) to bend the metal sheet in the cold state into workpieces of various geometric cross-sectional shapes. It is a sheet forming machine designed for cold rolled sheet metal processing. It is widely used in sheet bending processing in industries such as automobiles, aircraft manufacturing, light industry, shipbuilding, containers, elevators, and railway vehicles. At present, the existing workpiece bending processing method is single, usually limiting the two ends of the workpiece and applying pressure to one part of the workpiece to form a bending angle. However, since the workpiece position is easily offset when bending the workpiece, the deviation of the workpiece bending angle is too large, and it is difficult to position workpieces of different specifications, so the practicality is poor. The "A CNC bending machine" disclosed in the application number "CN202321570247.8" solves the problem of workpiece position deviation when bending the workpiece in previous equipment through a specific technical structure setting, which causes the workpiece bending angle deviation to be too large, and it is difficult to position workpieces of different specifications, resulting in poor practicality. However, the device still has some problems, such as: it uses a pressure plate in the load-bearing frame to fix the two ends of the workpiece, but when the workpiece is impacted and bent by the convex head, its two ends will rotate and deviate in the load-bearing frame, and it is easy to fall out from under the pressure plate in the load-bearing frame. Utility Model Content

[0003] The purpose of the utility model is to provide a CNC bending machine to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a CNC bending machine, comprising a workbench, a first clamp and a second clamp, wherein the workbench is provided with slide grooves at both ends of the inner front end, a first clamp is provided at one end of the inner part of the slide groove, and a second clamp is provided at the other end of the inner part of the slide groove, a bottom plate is provided inside the first clamp, a first rotating shaft is connected to the top surface of the bottom plate, a clamp frame is connected to the surface of the first rotating shaft, a shaft sleeve is installed through the top end of the clamp frame, and a shaft rod is inserted into the inner part of the shaft sleeve.

[0005] When using a CNC bending machine in the present technical solution, the staff needs to first connect the power supply of the utility model to the external power supply, control the operation of the utility model through the control panel, the staff places the workpiece to be bent on the surface of the workbench, and after placing it, moves the first clamp and the second clamp according to the length of the workpiece, and moves the first clamp and the second clamp to the two ends of the workpiece. After moving to this position, the staff places the two ends of the workpiece inside the clamping frame in the first clamp and the second clamp. After placing it inside, the staff holds the turning handle and applies force to rotate it. The rotational force applied to the turning handle will be synchronized to the shaft rod, and the shaft rod will rotate inside the shaft sleeve. Because the surface of the shaft rod and the inner surface of the shaft sleeve are It is provided with a thread, and the engagement of the thread causes the shaft to move inside the sleeve, and the movement of the shaft will move with the clamp connected to the bottom end, so that the two ends of the workpiece placed in the clamp frame will be clamped and fixed. The internal structure of the second clamp is the same as the internal structure of the first clamp, so the operation of fixing the two ends of the workpiece is also the same. After the two ends of the workpiece are fixed, the staff controls the cylinder to push the punch connected to the output end, and the punch moves and impacts the middle of the workpiece to make it bend. When the workpiece bends, its two ends will rotate with the clamp frame in cooperation with the rotation of the first rotating shaft, so that when the middle of the workpiece is impacted and bent, its two ends will not fall out of the inside of the clamp frame due to bending and rotation.

[0006] Preferably, the bottom end of the shaft is connected to a second shaft, and the surface of the second shaft is connected to a clamping plate. The installation of the second shaft ensures that the shaft does not rotate with the clamping plate, and the installation of the clamping plate allows the two ends of the workpiece placed in the clamping frame to be pressed and fixed.

[0007] Preferably, a rotating handle is fixed to the top of the shaft rod, and the installation of the rotating handle makes it convenient for the staff to apply a rotating force to the shaft rod, and provides a force application point.

[0008] Preferably, the surface of the shaft and the inner surface of the sleeve are both provided with threads and mesh with each other. Through the cooperation between the shaft and the sleeve, since both the surface and the inner surface of the shaft are provided with threads, when the shaft rotates in the sleeve, the threads will mesh, so that the shaft will move up and down inside the sleeve, thereby achieving the effect of indirectly controlling the position of the splint.

[0009] Preferably, a pulley is connected to the bottom surface of the bottom plate, and the pulley slides inside the slide groove. Through the cooperation of the pulley and the slide groove, the first clamp and the second clamp can be moved on the surface of the workbench, achieving the effect of moving the first clamp and the second clamp.

[0010] Preferably, a cylinder is fixed to the rear end of the outer top surface of the workbench, and a punch is connected to the output end of the cylinder. Through the cooperation of the cylinder and the punch, the workpiece fixed at both ends by the first clamp and the second clamp can be impact-bent, achieving the effect of impact-bending.

[0011] Preferably, the outer bottom surface of the workbench is provided with four supporting feet, which are distributed in a rectangular shape. The installation of the four supporting feet enables the utility model to be stably placed off the ground for use.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with two movable clamps at both ends of the top surface of the workbench, which can be adapted to clamp the two ends of workpieces of different sizes. When the two ends of the workpiece are placed inside, they can be clamped and fixed by the clamps. When the workpiece is bent in the middle by the punch, the two clamps will move and rotate with the bending of the workpiece to prevent the two ends of the workpiece from escaping from the clamps. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the top view of the appearance structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the main internal structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the three-dimensional appearance structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the first clamp of the utility model.

[0018] In the figure: 1. workbench; 2. first fixture; 21. bottom plate; 22. handle; 23. clamping frame; 24. first rotating shaft; 25. shaft; 26. bushing; 27. pulley; 28. clamping plate; 29. ​​second rotating shaft; 3. second fixture; 4. punch; 5. cylinder; 6. slide groove; 7. support foot. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a CNC bending machine proposed by the utility model includes a workbench 1, a first clamp 2 and a second clamp 3, the workbench 1 has slide grooves 6 at both ends of the inner front end, the first clamp 2 is provided at one end inside the slide groove 6, and the second clamp 3 is provided at the other end inside the slide groove 6, a bottom plate 21 is provided inside the first clamp 2, the top surface of the bottom plate 21 is connected to the first rotating shaft 24, the surface of the first rotating shaft 24 is connected to the clamp frame 23, the top end of the clamp frame 23 is penetrated by a shaft sleeve 26, and a shaft rod 25 is inserted into the shaft sleeve 26.

[0022] The staff needs to first connect the power supply of the utility model to the external power supply, and control the operation of the utility model through the control panel. The staff places the workpiece to be bent on the surface of the workbench 1, and after placing it, moves the first clamp 2 and the second clamp 3 according to the length of the workpiece, and moves the first clamp 2 and the second clamp 3 to the two ends of the workpiece. After moving to this position, the staff places the two ends of the workpiece inside the clamp frame 23 in the first clamp 2 and the second clamp 3. After placing it inside, the staff holds the handle 22 and applies force to rotate it. The rotational force applied to the handle 22 will be synchronized to the shaft 25, and the shaft 25 will rotate inside the sleeve 26. Because the surface of the shaft 25 and the inner surface of the sleeve 26 are both provided with threads, the threads The engagement of the shaft rod 25 will move inside the sleeve 26, and the movement of the shaft rod 25 will move with the clamping plate 28 connected to the bottom end so that the two ends of the workpiece placed in the clamping frame 23 will be clamped and fixed. The internal structure of the second clamp 3 is the same as the internal structure of the first clamp 2, so the operation of fixing the two ends of the workpiece is also the same. After the two ends of the workpiece are fixed, the staff controls the cylinder 5 to push the punch 4 connected to the output end. The punch 4 moves and impacts the middle of the workpiece to make it bend. When the workpiece is bent, its two ends will rotate with the rotation of the clamping frame 23 in cooperation with the first rotating shaft 24. In this way, when the middle of the workpiece is impacted and bent, its two ends will not fall out of the inside of the clamping frame 23 due to the bending and rotation.

[0023] Embodiment 2

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a CNC bending machine proposed by the utility model, compared with the first embodiment, this embodiment also includes: the bottom end of the shaft 25 is connected to the second rotating shaft 29, the surface of the second rotating shaft 29 is connected to the clamping plate 28, the top of the shaft 25 is fixed with a handle 22, the surface of the shaft 25 and the inner surface of the sleeve 26 are both provided with threads, and are meshed with each other, the bottom surface of the bottom plate 21 is connected with a pulley 27, and the pulley 27 slides inside the slide groove 6, the rear end of the external top surface of the workbench 1 is fixed with a cylinder 5, the output end of the cylinder 5 is connected with a punch 4, the external bottom surface of the workbench 1 is provided with a support foot 7, and the support foot 7 is provided with four, and the four support feet 7 are distributed in a rectangular shape.

[0025] In this embodiment, Figure 4 As shown, the installation of the second rotating shaft 29 ensures that the shaft 25 will not rotate with the clamping plate 28 when rotating, and the installation of the clamping plate 28 enables both ends of the workpiece placed in the clamping frame 23 to be pressed and fixed;

[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the installation of the rotating handle 22 makes it easy for the staff to apply a rotating force to the shaft 25, providing a force application point;

[0027] like Figure 2 , Figure 3 and Figure 4 As shown, through the cooperation between the shaft rod 25 and the sleeve 26, since both the surface and the inner surface are provided with threads, when the shaft rod 25 rotates in the sleeve 26, the threads will be engaged, so that the shaft rod 25 will move up and down inside the sleeve 26, thereby achieving the effect of indirectly controlling the position of the clamping plate 28;

[0028] like Figure 1 , Figure 2 and Figure 3 As shown, through the cooperation of the pulley 27 and the slide groove 6, the first clamp 2 and the second clamp 3 can be moved on the surface of the workbench 1, achieving the effect of moving the first clamp 2 and the second clamp 3;

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, through the cooperation of the cylinder 5 and the punch 4, the workpiece whose two ends are fixed by the first clamp 2 and the second clamp 3 can be impact-bent, achieving the effect of impact-bending;

[0030] like Figure 2 and Figure 3 As shown, the installation of four legs 7 enables the utility model to be stably placed off the ground for use.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CNC bending machine, comprising a workbench (1), a first fixture (2) and a second fixture (3), characterized in that: The workbench (1) is provided with a slide groove (6) at both ends of the inner front end, a first clamp (2) is provided at one end of the inner part of the slide groove (6), and a second clamp (3) is provided at the other end of the inner part of the slide groove (6). A bottom plate (21) is provided inside the first clamp (2), and a first rotating shaft (24) is connected to the top surface of the bottom plate (21), and a clamp frame (23) is connected to the surface of the first rotating shaft (24), and a shaft sleeve (26) is installed through the top end of the clamp frame (23), and a shaft rod (25) is inserted into the inside of the shaft sleeve (26).

2. A CNC bending machine according to claim 1, characterized in that: The bottom end of the shaft (25) is connected to a second rotating shaft (29), and the surface of the second rotating shaft (29) is connected to a clamping plate (28).

3. A CNC bending machine according to claim 1, characterized in that: A rotating handle (22) is fixed to the top end of the shaft rod (25).

4. A CNC bending machine according to claim 1, characterized in that: The surface of the shaft rod (25) and the inner surface of the shaft sleeve (26) are both provided with threads and mesh with each other.

5. The CNC bending machine according to claim 1, characterized in that: The bottom surface of the bottom plate (21) is connected to a pulley (27), and the pulley (27) slides inside the slide groove (6).

6. A CNC bending machine according to claim 1, characterized in that: A cylinder (5) is fixed at the rear end of the external top surface of the workbench (1), and a punch (4) is connected to the output end of the cylinder (5).

7. A CNC bending machine according to claim 1, characterized in that: The outer bottom surface of the workbench (1) is provided with supporting feet (7), and there are four supporting feet (7), and the four supporting feet (7) are distributed in a rectangular shape.

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