A CNC bending machine with a precision positioning structure

Abstract

This utility model discloses a CNC bending machine with a precise positioning structure, including a worktable. A support frame is fixedly connected to the outer top of the worktable, and a driving device is fixedly connected to the inner top wall of the support frame. A bending cutter is fixedly connected to the lower end of the driving device. A bending die is fixedly connected to the middle top of the worktable, and the bending die is located directly below the bending cutter. A rectangular frame is fixedly connected to the outer wall of the bending die, a support arm is fixedly connected to the front end of the rectangular frame, a support base is fixedly connected to the front end of the support arm, and a limit frame is fixedly connected to the rear end of the rectangular frame. This device has a reasonable structural design and can form a mechanical positioning module structure, reducing the time for manual measurement, marking, and alignment before each bending, avoiding bending quality problems caused by tilted or inaccurate front and rear positions of the sheet metal, and effectively improving processing efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of bending machine technology, and in particular to a CNC bending machine with a precision positioning structure. Background Technology

[0002] CNC bending machines use equipped dies to bend cold metal sheets into workpieces of various geometric cross-sectional shapes. The CNC system controls the movement of the bending cutters, applying pressure to the metal sheet placed on the die, causing plastic deformation to obtain parts with predetermined angles and shapes. Bending accuracy and efficiency directly affect the quality of the final product and production costs.

[0003] Currently, CNC bending machine processing requires operators to manually position the sheet metal initially, using measuring tools such as steel rulers and tape measures to measure and mark dimensions on the worktable or mold, or relying on visual inspection and experience to align the edge of the sheet metal with a reference line on the mold to determine the placement position of the sheet metal and the location of the bending line.

[0004] However, this method relies heavily on the operator's skill level and has significant limitations. The preparatory work, such as measurement, marking, or alignment before bending, is cumbersome, resulting in a long overall processing cycle. Furthermore, manual positioning operations suffer from poor consistency, easily leading to tilted placement of the sheet metal or inaccurate front-to-back positioning, affecting the bending quality of the sheet metal workpiece. Therefore, we propose a CNC bending machine with a precise positioning structure to overcome the shortcomings of existing technologies. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a CNC bending machine with a precise positioning structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a CNC bending machine with a precise positioning structure, comprising a worktable, a support frame fixedly connected to the outer top of the worktable, a driving device fixedly connected to the top inner wall of the support frame, a bending cutter fixedly connected to the lower end of the driving device, a bending die fixedly connected to the middle top section of the worktable, the bending die being located directly below the bending cutter, a rectangular frame fixedly connected to the outer wall of the bending die, a support arm fixedly connected to the front end of the rectangular frame, a bracket fixedly connected to the front end of the support arm, and a limit frame fixedly connected to the rear end of the rectangular frame.

[0007] Preferably, in a CNC bending machine with a precision positioning structure, the top of the support is provided with an inverted T-shaped horizontal groove, a T-shaped slider is slidably connected in the T-shaped horizontal groove, a side baffle is fixed to the upper end of the T-shaped slider, a plurality of threaded holes are provided at the lower end of the T-shaped horizontal groove, and a fastening bolt is abutted at the lower end of the T-shaped slider, the fastening bolt being threadedly connected to the threaded holes.

[0008] Preferably, in a CNC bending machine with a precision positioning structure, the limiting frame is arranged in a U-shape, a screw is rotatably connected to the center of the horizontal part of the limiting frame, a handwheel is fixedly connected to the rear end of the screw, a nut seat is screwed to the outer wall of the screw, a stop block is fixedly connected to the upper end of the nut seat, stroke grooves are opened on the left and right parts of the limiting frame, an I-beam is slidably connected in the stroke groove, and a fixing rod is fixedly connected between the I-beam and the nut seat.

[0009] Preferably, in a CNC bending machine with a precise positioning structure, the upper surface of the limiting frame is lower than the upper surface of the bending die, the upper surface of the stop block is higher than the upper surface of the bending die, the outer wall of the limiting frame is marked with scale bars on the left and right, and the outer wall of the I-beam is connected with a scale pointer.

[0010] Preferably, in a CNC bending machine with a precision positioning structure, the top left and right sides of the bending die are connected to lifting rings, and the bending die is set at the same height as the upper surface of the support.

[0011] Preferably, in a CNC bending machine with a precision positioning structure, the front end face of the worktable is connected to a control panel, and the control panel is electrically connected to a drive device.

[0012] The beneficial effects of this utility model are:

[0013] 1. The device has a reasonable structural design. It integrates the support and the limiting frame on the outside of the bending die using a rectangular frame, which can form a mechanical positioning module structure. The operator only needs to adjust the position of the side baffle and the rear baffle in advance to achieve rapid initial positioning of the sheet metal. This reduces the time for manual measurement, marking and alignment before each bending, and avoids bending quality problems caused by the tilting of the sheet metal or inaccurate front and rear positions, effectively improving processing efficiency and quality.

[0014] 2. In this device, the side baffle is adjusted and locked by T-slots and fastening bolts, and the rear stop is adjusted by screw drive. The line scale and scale pointer make the bending size intuitive and visible, which can reduce the dependence on the operator's personal skill level and experience, and is conducive to the stability of production and the flexibility of personnel allocation. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the bending die in this utility model;

[0018] Figure 3 This is a schematic diagram of the rectangular frame in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the central support frame of this utility model.

[0020] The attached figures are labeled as follows:

[0021] 1. Workbench; 2. Stand; 3. Drive unit; 4. Bending cutter; 5. Bending die; 6. Rectangular frame; 7. Support arm; 8. Support; 9. Limiting bracket; 10. Control panel; 51. Scale pointer; 81. T-slot; 82. T-slide block; 83. Side baffle; 84. Threaded hole; 85. Fastening bolt; 91. Screw; 92. Handwheel; 93. Nut seat; 94. Stop block; 95. Stroke groove; 96. I-beam block; 97. Fixing rod; 98. Scale pointer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1-4 As shown, a CNC bending machine with a precision positioning structure is disclosed, including a worktable 1, a support frame 2 fixedly connected to the top outer side of the worktable 1, a drive device 3 fixedly connected to the inner top wall of the support frame 2, a bending cutter 4 fixedly connected to the lower end of the drive device 3, a bending die 5 fixedly connected to the top middle section of the worktable 1, the bending die 5 being located directly below the bending cutter 4, a rectangular frame 6 fixedly connected to the outer wall of the bending die 5, a support arm 7 fixedly connected to the front end of the rectangular frame 6, a support base 8 fixedly connected to the front end of the support arm 7, and a limit frame 9 fixedly connected to the rear end of the rectangular frame 6.

[0024] The top of the support 8 is provided with an inverted T-shaped horizontal groove 81. A T-shaped slider 82 is slidably connected in the T-shaped horizontal groove 81. A side baffle 83 is fixed to the upper end of the T-shaped slider 82. Multiple threaded holes 84 are provided at the lower end of the T-shaped horizontal groove 81. A fastening bolt 85 abuts against the lower end of the T-shaped slider 82. The fastening bolt 85 is threadedly connected to the threaded holes 84. The support 8 and the bending die 5 jointly support the sheet material to be bent, ensuring that the sheet material remains horizontal during the bending process. The side baffle 83 provides an adjustable lateral positioning reference for the sheet material, preventing the sheet material from tilting.

[0025] The limiting frame 9 is U-shaped. A screw 91 is rotatably connected to the center of the horizontal part of the limiting frame 9. A handwheel 92 is fixed to the rear end of the screw 91. A nut seat 93 is screwed to the outer wall of the screw 91. A stop block 94 is fixed to the upper end of the nut seat 93. The left and right parts of the limiting frame 9 have stroke grooves 95. I-beam blocks 96 are slidably connected in the stroke grooves 95. A fixing rod 97 is fixed between the I-beam blocks 96 and the nut seat 93. The stop block 94 is used to accurately position the rear end of the sheet material, which makes it easy to find the bending and indentation position.

[0026] The upper surface of the limit frame 9 is lower than the upper surface of the bending die 5, and the upper surface of the stop block 94 is higher than the upper surface of the bending die 5, to ensure that the sheet metal can be effectively blocked. The outer wall of the limit frame 9 is marked with scale bars on the left and right, and the outer wall of the I-beam block 96 is connected to the scale pointer 98.

[0027] The top left and right sides of the bending die 5 are connected to lifting rings 51, which facilitates hoisting and transfer during loading and unloading. The bending die 5 is set at the same height as the upper surface of the support 8.

[0028] The front end of the workbench 1 is connected to a control panel 10, which is electrically connected to the drive device 3 to facilitate the control of the bending operation.

[0029] The specific working principle of this embodiment is as follows:

[0030] This device uses the workbench 1 as the basic platform of the entire equipment. The upright frame 2 is fixed on the workbench 1. The drive device 3 is fixedly installed on the top of the inner wall of the upright frame 2. It can be a servo electric cylinder or a hydraulic cylinder. The control panel 10 precisely controls the descent height of the bending cutter 4, and works with the bending mold 5 to complete the bending operation of the sheet metal.

[0031] A rectangular frame 6 is added to the outside of the bending die 5, which, together with the support 8 and the limit frame 9, forms a positioning module structure. The support 8 can support the sheet metal to be bent together with the bending die 5. The T-shaped slider 82 can slide along the T-shaped transverse groove 81 of the support 8, thereby adjusting the position of the side baffle 83. The fastening bolt 85 is screwed into the threaded hole 84 below and pushed upward to tighten the T-shaped slider 82, using friction to lock it in the current position. During the bending process, one side of the sheet metal is pressed against the side baffle 83. The side baffle 83 provides a lateral positioning reference for the sheet metal, preventing the sheet metal from tilting and helping to ensure processing quality.

[0032] The handwheel 92 drives the screw 91 to rotate, and the nut seat 93 can drive the fixed rod 97 to move linearly. The stroke groove 95 limits and guides the I-block 96. The I-block 96 moves synchronously with the nut seat 93, which can adjust the position of the stop 94. The upper surface of the stop 94 is higher than the bending die 5 to ensure effective blocking of the sheet material. The body of the limit frame 9 is lower than the die to avoid interfering with the placement of the sheet material. The scale strip on the outer wall of the limit frame 9 and the scale pointer 98 on the I-block 96 are used to point to the distance between the stop 94 and the bending indentation, which can be intuitively understood.

[0033] This bending machine improves the initial positioning accuracy of bent sheet metal by integrating a mechanical front-end lateral positioning structure and a rear-end axial positioning structure with scale indicators, reducing human error and measurement time, which is beneficial to work efficiency and product quality.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A numerical control bending machine with precision positioning structure, comprising a worktable (1), characterized in that: A stand (2) is fixed to the top outer side of the workbench (1). A drive device (3) is fixed to the top inner wall of the stand (2). A bending cutter (4) is fixed to the lower end of the drive device (3). A bending mold (5) is fixed to the middle top section of the workbench (1). The bending mold (5) is located directly below the bending cutter (4). A rectangular frame (6) is fixed to the outer wall of the bending mold (5). A support arm (7) is fixed to the front end of the rectangular frame (6). A support base (8) is fixed to the front end of the support arm (7). A limit frame (9) is fixed to the rear end of the rectangular frame (6).

2. The numerical control bending machine with precise positioning structure according to claim 1, characterized in that: The top of the support (8) is provided with an inverted T-shaped horizontal groove (81), and a T-shaped slider (82) is slidably connected in the T-shaped horizontal groove (81). A side baffle (83) is fixed to the upper end of the T-shaped slider (82), and a plurality of threaded holes (84) are provided at the lower end of the T-shaped horizontal groove (81). A fastening bolt (85) abuts against the lower end of the T-shaped slider (82), and the fastening bolt (85) is threadedly connected to the threaded hole (84).

3. The numerical control bending machine with precise positioning structure according to claim 1, characterized in that: The limiting frame (9) is U-shaped. A screw (91) is rotatably connected to the center of the horizontal part of the limiting frame (9). A handwheel (92) is fixed to the rear end of the screw (91). A nut seat (93) is screwed to the outer wall of the screw (91). A stop block (94) is fixed to the upper end of the nut seat (93). The limiting frame (9) has stroke grooves (95) on the left and right sides. An I-beam (96) is slidably connected in the stroke groove (95). A fixing rod (97) is fixed between the I-beam (96) and the nut seat (93).

4. The numerical control bending machine with precise positioning structure according to claim 3, characterized in that: The upper surface of the limiting frame (9) is lower than the upper surface of the bending die (5), the upper surface of the stop block (94) is higher than the upper surface of the bending die (5), the outer wall of the limiting frame (9) is marked with scale bars on the left and right, and the outer wall of the I-beam block (96) is connected with a scale pointer (98).

5. The numerical control bending machine with precise positioning structure according to claim 1, characterized in that: The bending die (5) is connected to the top left and right sides with lifting rings (51), and the bending die (5) is set at the same height as the upper surface of the support (8).

6. The CNC bending machine with precise positioning structure according to claim 1, characterized in that: The front end of the workbench (1) is connected to a control panel (10), which is electrically connected to a drive device (3).

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