A punching device for sheet metal part machining

Abstract

The application discloses a punching device for sheet metal part machining and relates to the field of sheet metal part production and machining, which comprises a workbench and a punching mechanism, the punching mechanism is fixed on the top of the workbench, the top of the workbench is provided with a longitudinal adjusting mechanism for adjusting the longitudinal position of the sheet metal part, the longitudinal adjusting mechanism is provided with a transverse adjusting mechanism for adjusting the transverse position of the sheet metal part, the transverse adjusting mechanism is provided with a fine adjusting mechanism for fine adjusting the transverse position of the sheet metal part, and the fine adjusting mechanism is provided with a clamping mechanism for placing and clamping the sheet metal part. The longitudinal adjusting mechanism and the transverse adjusting mechanism are used for realizing wide-range coarse adjustment, the fine adjusting mechanism is used for realizing high-precision fine adjustment, a three-stage adjusting system of 'coarse positioning + fine calibration' is formed, the efficiency of wide-range movement is ensured, the accuracy of small-amplitude fine adjustment is realized, the cumulative error of a single mechanism is effectively avoided, the calibration accuracy of the punching position of the sheet metal part is greatly improved, and the hole position deviation is reduced.

Description

Technical Field

[0001] This application relates to the field of sheet metal production and processing technology, and in particular to a punching device for sheet metal processing. Background Technology

[0002] Sheet metal punching is a common process in manufacturing, widely used in industries such as automobiles, home appliances, and construction. With the development of industrial automation, the requirements for the precision and efficiency of sheet metal processing are becoming increasingly stringent. Traditional punching equipment typically uses a fixed worktable and manual adjustment, which is insufficient to meet the demands for high-precision and high-efficiency processing. In recent years, some automated punching equipment has begun to incorporate electric adjustment mechanisms, but these still have shortcomings in multi-directional adjustment and fine-tuning capabilities.

[0003] In the existing technology, the common sheet metal punching devices mainly include the following solutions: First, a fixed worktable is used in conjunction with a manual fixture, and the position of the sheet metal part is adjusted manually, which makes the operation cumbersome and the accuracy low; Second, a single-axis electric adjustment mechanism is used to realize automatic adjustment in one direction. Although the adjustment efficiency in one direction is improved, it cannot meet the needs of multi-directional adjustment; Third, a dual-axis electric adjustment mechanism is used to realize automatic adjustment in the longitudinal and transverse directions. This improves the multi-directional adjustment, but it lacks fine-tuning function and is difficult to achieve high-precision positioning.

[0004] The main drawbacks of existing technologies are insufficient adjustment precision, complex operation, and low efficiency. In situations requiring high-precision positioning, multiple manual adjustments are often necessary, which seriously affects processing efficiency and product quality. Utility Model Content

[0005] In view of the above-mentioned prior art, in order to solve the problems of insufficient adjustment accuracy, complicated operation, and low efficiency, which often require multiple manual adjustments in situations requiring high-precision positioning, thus seriously affecting processing efficiency and product quality, this application provides a punching device for sheet metal processing.

[0006] This application provides a punching device for sheet metal processing, which adopts the following technical solution: A punching device for sheet metal processing includes a worktable and a punching mechanism. The punching mechanism is fixed to the top of the worktable. The top of the worktable is provided with a longitudinal adjustment mechanism for adjusting the longitudinal position of the sheet metal part. The longitudinal adjustment mechanism is provided with a lateral adjustment mechanism for adjusting the lateral position of the sheet metal part. The lateral adjustment mechanism is provided with a fine adjustment mechanism for fine adjustment of the lateral position of the sheet metal part. The fine adjustment mechanism is provided with a clamping mechanism for placing and clamping the sheet metal part. The clamping mechanism, the longitudinal adjustment mechanism, the lateral adjustment mechanism, and the fine adjustment mechanism are all located below the punching mechanism. The fine-tuning mechanism includes a pair of motor supports, a drive motor, a rotating shaft, a pair of brackets, a drive disc, a connecting shaft, a support frame, and a sliding rod. The motor supports and brackets are both mounted on the lateral adjustment mechanism, and the pair of brackets are located between the motor supports. The drive motor is fixed on the motor supports. The rotating shaft is rotatably mounted on the brackets, and both ends of the rotating shaft pass through the brackets and are connected to the output ends of the drive motor. The support frame is fixed on the brackets. The sliding rod is slidably connected to the support frame. Both ends of the connecting shaft are connected to the sliding rod. The drive disc is rotatably connected to the connecting shaft, and the bottom of the drive disc is engaged with the rotating shaft.

[0007] By adopting the above technical solution, the longitudinal adjustment mechanism controls the forward and backward movement of the sheet metal part, the lateral adjustment mechanism controls the coarse left and right adjustment of the sheet metal part, and the fine adjustment mechanism drives the rotating shaft through the drive motor, and then drives the sliding rod through the cooperation of the drive plate and the connecting shaft. The transmission structure is compact and has high transmission efficiency, which can achieve small-amplitude, high-precision lateral fine adjustment, reduce punching position error, and enable three-level adjustment to achieve all-round position calibration. It separates the large-range movement (longitudinal and lateral adjustment mechanisms) from the small-range precise adjustment (fine adjustment mechanism). The coarse adjustment quickly moves the workpiece to the vicinity of the target area, and then the fine adjustment mechanism performs the "final step" of precise alignment, which effectively avoids the cumulative error caused by the insufficient precision of a single mechanism. At the same time, each adjustment mechanism operates independently and has a simple structure. It can control the longitudinal, lateral or fine adjustment actions separately according to the processing requirements without moving the whole equipment or sheet metal parts. It is suitable for continuous processing of sheet metal parts of different specifications and improves processing efficiency.

[0008] Preferably, the longitudinal adjustment mechanism includes a connecting plate, a first driving member, a first lead screw, a first moving block, a first moving plate, and a guide assembly for guiding the first moving plate. The bottom of the connecting plate is fixedly connected to the top of the worktable. The first driving member is mounted on the connecting plate, and the output end of the first driving member is fixedly connected to one end of the first lead screw. The first moving block is disposed on the surface of the first lead screw, and the first lead screw is threadedly connected to the first moving block. The top of the first moving block is fixedly connected to the bottom of the first moving plate. The bottom of the guide assembly is connected to the worktable, and the top of the guide assembly is connected to the bottom of the first moving plate.

[0009] By adopting the above technical solution, the screw drive of the first lead screw and the first moving block is connected by a thread. The screw drive has good pitch uniformity and no sliding friction. It can accurately convert the power of the first driving component into the longitudinal linear motion of the first moving plate, reduce the position deviation during the adjustment process, and form a "one drive, one guide" cooperation with the lead screw drive to limit the lateral displacement of the first moving plate, ensure no shaking or jamming during longitudinal movement, and improve the motion stability of the sheet metal parts after bearing the load.

[0010] Preferably, the guiding assembly includes a pair of guide rails and a guide slider. The bottom of the guide rails is fixed to the top of the worktable, and the first lead screw is located between the pair of guide rails. The guide slider is slidably connected to the surface of the guide rails, and the top of the guide slider is fixedly connected to the bottom of the first moving plate.

[0011] By adopting the above technical solution, a pair of guide rails are symmetrically distributed on both sides of the first lead screw, forming a two-way guiding constraint, which strictly limits the lateral offset of the first moving plate and ensures that it only moves in a longitudinal straight line, further improving the positioning accuracy of longitudinal adjustment. At the same time, the guide slider and the guide rail are slidably connected, and with the smooth surface of the guide rail, the frictional resistance during the movement can be reduced, avoiding jamming and making the longitudinal adjustment action smoother.

[0012] Preferably, the lateral adjustment mechanism includes a pair of fixed blocks, a second driving member, a second lead screw, a second moving block, a second moving plate, and a limiting assembly for guiding the second moving plate. The bottom of the fixed blocks is fixedly connected to the first moving plate. The second lead screw is disposed between the pair of fixed blocks and is rotatably connected to the fixed blocks. The second driving member is fixed on the fixed blocks, and its output end is coaxially connected to the second lead screw. The second moving block is threadedly connected to the second lead screw, and its top is fixedly connected to the bottom of the second moving plate. The limiting assembly is disposed on the first moving plate, and its top is connected to the second moving plate. The bottom of the motor support and bracket is fixedly connected to the top of the second moving plate.

[0013] By adopting the above technical solution, the threaded transmission structure of the second lead screw and the second moving block has a small transmission gap and good pitch consistency, which can accurately convert the power of the second driving component into the lateral linear motion of the second moving plate, ensuring the accuracy of the lateral position adjustment of the sheet metal part. With the help of a special limiting component, it forms a cooperative constraint with the lead screw transmission, restricting the non-lateral displacement of the second moving plate, avoiding shaking or deviation during movement, and ensuring that the lateral adjustment process is smooth and without jamming.

[0014] Preferably, the limiting component includes a pair of guide rails and a limiting slider. The guide rails are disposed on the first movable plate, and the second lead screw is located between the pair of guide rails. The limiting slider is slidably connected to the guide rails, and the top of the limiting slider is fixedly connected to the second movable plate.

[0015] By adopting the above technical solution, a pair of guide rails are symmetrically distributed on both sides of the second lead screw, forming a two-way constraint, which strictly limits the longitudinal offset of the second moving plate and ensures that it only moves in a straight line in the lateral direction, further improving the positioning accuracy of the lateral adjustment. At the same time, the limit slider and the guide rail adopt a sliding fit, with a low coefficient of friction, which can reduce the resistance during lateral movement, avoid jamming and sticking, and make the adjustment action more stable and efficient.

[0016] Preferably, the clamping mechanism includes a placement plate with an internal cavity, an adjusting turntable, a bidirectional lead screw, and a pair of clamping frames. The bottom of the placement plate is fixedly connected to a slide rod on a fine-tuning mechanism. The bidirectional lead screw is rotatably connected inside the placement plate, and one end of the bidirectional lead screw passes through the placement plate and is fixedly connected to the adjusting turntable. The pair of clamping frames are threadedly connected to the surface of the bidirectional lead screw, so that the pair of clamping frames move relative to the bidirectional lead screw.

[0017] By adopting the above technical solution, a two-way lead screw is threadedly connected to a pair of clamping frames. When the adjusting turntable drives the two-way lead screw to rotate, the two clamping frames can move closer or further away synchronously, ensuring that the sheet metal parts are always clamped in the center position, avoiding displacement and improving positioning consistency. At the same time, the clamping or releasing action can be completed by manually rotating the adjusting turntable, without the need for a complex automated control structure, making the operation threshold low. In addition, the lead screw drive has good self-locking properties, making it difficult to loosen after clamping, ensuring stability during the processing.

[0018] Preferably, a limiting groove is provided on the top of the placement plate, and the limiting groove is used in conjunction with the clamping frame.

[0019] By adopting the above technical solution, the limiting groove and the clamping frame work together to constrain the movement path of the clamping frame, ensuring that the two clamping frames always move relative to each other along the direction of the limiting groove, avoiding lateral displacement during clamping, and making the sheet metal parts more accurately positioned. At the same time, when the sheet metal parts are placed in the limiting groove, the groove wall can provide lateral support for the sheet metal parts. Combined with the clamping force of the clamping frame, multiple fixation is formed from "clamping on both sides + bottom limiting", reducing the shaking or movement of the sheet metal parts during punching.

[0020] Preferably, the punching mechanism includes an adjustable support column, a servo motor, and a drill bit, wherein the servo motor is fixed on the support column and the output end of the servo motor is connected to the drill bit.

[0021] By adopting the above technical solution, the adjustable design of the support column can flexibly adjust the height of the servo motor and drill bit according to the thickness and punching depth requirements of the sheet metal parts. It can adapt to the processing needs of sheet metal parts of different specifications without changing the mechanism. At the same time, the servo motor drives the drill bit. The servo motor has a stable speed and precise output torque, which can accurately control the punching speed and feed rate of the drill bit, reduce punching burrs, deformation and other problems, and improve the accuracy and consistency of hole processing.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. A wide range of coarse adjustment is achieved through longitudinal and lateral adjustment mechanisms, combined with high-precision fine adjustment through fine adjustment mechanism (drive motor + meshing transmission + slide bar), forming a three-level adjustment system of "coarse adjustment positioning + fine adjustment calibration". This ensures both the efficiency of large-range movement and the accuracy of small-amplitude fine adjustment, effectively avoiding the cumulative error of a single mechanism, greatly improving the calibration accuracy of the punching position of sheet metal parts, and reducing hole position deviation. 2. This utility model employs a combination design of "screw drive + bidirectional guide / limit" for each adjustment mechanism. The double guide rails for longitudinal adjustment and lateral adjustment are symmetrically distributed on both sides of the screw, forming a bidirectional constraint to strictly limit deviations in non-target directions. The fine-tuning mechanism ensures the linear motion stability of lateral fine-tuning through the sliding cooperation of the support frame and the slide rod. Simultaneously, the bidirectional screw + limit groove design of the clamping mechanism achieves multiple fixation through "double-sided clamping + bottom limiting," preventing the sheet metal parts from shaking or shifting during punching. The overall structure has small transmission gaps, no jamming, and outstanding smoothness of movement when carrying sheet metal parts. 3. This utility model features independently operating adjustment mechanisms, allowing for individual control of longitudinal, lateral, or fine-tuning movements according to processing requirements, without the need to move the entire equipment or sheet metal parts. The adjustable design of the support column adapts to sheet metal parts of different thicknesses, and the bidirectional screw clamping mechanism allows for quick clamping / releasing via a manual turntable, making it easy to operate and suitable for sheet metal parts of various specifications. The combination of three-level adjustment and flexible clamping supports continuous processing, reduces the time cost of workpiece positioning and changeover, and significantly improves processing efficiency. Attached Figure Description

[0023] Figure 1 This is a front-view three-dimensional structural diagram of a punching device for sheet metal processing; Figure 2 This is a front view structural diagram of a punching device for sheet metal processing; Figure 3 This is a three-dimensional structural diagram of the fine-tuning mechanism; Figure 4 It is a three-dimensional diagram of the coordinated structure of the clamping mechanism, fine-tuning mechanism, longitudinal adjustment mechanism and lateral adjustment mechanism; Figure 5 It is a three-dimensional diagram of the cooperation structure of the longitudinal adjustment mechanism and the lateral adjustment mechanism; Figure 6 yes Figure 5 A three-dimensional sectional view of the structure; Figure 7 This is a schematic diagram of the internal structure of the clamping mechanism.

[0024] Reference numerals: 10, worktable; 20, punching mechanism; 21, support column; 22, servo motor; 23, drill bit; 30, longitudinal adjustment mechanism; 31, connecting plate; 32, first driving component; 33, first lead screw; 34, first moving block; 35, first moving plate; 36, guide assembly; 36-1, guide rail; 36-2, guide slider; 40, transverse adjustment mechanism; 41, fixing block; 42, second driving component; 43, second lead screw; 44. Second moving block; 45. Second moving plate; 46. Limiting assembly; 46-1. Guide rail; 46-2. Limiting slider; 50. Fine-tuning mechanism; 51. Motor support; 52. Drive motor; 53. Rotating shaft; 54. Bracket; 55. Drive disc; 56. Connecting shaft; 57. Support frame; 58. Slide rod; 60. Clamping mechanism; 61. Placement plate; 62. Adjusting turntable; 63. Bidirectional lead screw; 64. Clamping frame; 65. Limiting groove. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 -Appendix Figure 7 This application will be described in further detail.

[0026] This application discloses a punching device for processing sheet metal parts.

[0027] Reference Figure 1 , Figure 2 and Figure 3 A punching device for sheet metal processing includes a worktable 10, a punching mechanism 20, a longitudinal adjustment mechanism 30, a transverse adjustment mechanism 40, a fine-tuning mechanism 50, and a clamping mechanism 60. The punching mechanism 20 is fixed to the top of the worktable 10. The top of the worktable 10 is detachably connected to the longitudinal adjustment mechanism 30 for adjusting the longitudinal position of the sheet metal part. The top of the longitudinal adjustment mechanism 30 is slidably engaged with the transverse adjustment mechanism 40. The transverse adjustment mechanism 40 is arranged perpendicularly to the longitudinal adjustment mechanism 30 for achieving a wide range of transverse position adjustment of the sheet metal part. The fine-tuning mechanism 50 is fixedly installed on the top of the transverse adjustment mechanism 40 for precise adjustment of the transverse position of the sheet metal part. The top of the fine-tuning mechanism 50 is fixedly connected to the bottom of the clamping mechanism 60 for stable placement and elastic clamping of the sheet metal part. The clamping mechanism 60, the longitudinal adjustment mechanism 30, the transverse adjustment mechanism 40, and the fine-tuning mechanism 50 are all located directly below the punching mechanism 20, so that the adjustment directions of the four are coplanar. The fine-tuning mechanism 50 includes a pair of symmetrically arranged motor supports 51, a drive motor 52, a rotating shaft 53, a pair of symmetrically arranged brackets 54, a support frame 57, a connecting shaft 56, a drive disc 55, and a slide rod 58. The motor supports 51 and brackets 54 are both bolted to the top of the lateral adjustment mechanism 40, and the pair of brackets 54 are symmetrically distributed on both sides of the motor supports 51. The drive motor 52 is fixed to the outer wall of the motor supports 51 via a flange. The rotating shaft 53 is rotatably mounted in the middle of the bracket 54 via a rolling bearing, and one end of the rotating shaft 53 passes through… The shaft 53 is coaxially connected to the output end of the drive motor 52 through the side wall of the bracket 54 and the coupling. The outer wall of the shaft 53 is provided with a worm gear. The support frame 57 has a U-shaped structure and its bottom is fixed to the top of the bracket 54 by welding. The slide rod 58 is in the shape of an inverted U. The two ends of the slide rod 58 are slidably connected to the support frame 57 through sliders, and the middle part of the slide rod 58 is fixed to the connecting shaft 56. The drive disk 55 is rotatably connected to the connecting shaft 56, and the surface of the drive disk 55 is provided with worm gear teeth. The drive disk 55 is meshed with the worm gear on the shaft 53 through the worm gear teeth. The punching mechanism 20 includes an adjustable support column 21, a servo motor 22, and a drill bit 23. The support column 21 is fixedly connected to the worktable 10, and the servo motor 22 is fixed to the support column 21, so that the support column 21 can drive the servo motor 22 to move up and down. The output end of the servo motor 22 is connected to the drill bit 23, so that the servo motor 22 drives the drill bit 23 to punch holes in the sheet metal parts.

[0028] Specifically, the sheet metal part is clamped on the clamping mechanism 60. After clamping and fixing, the longitudinal adjustment mechanism 30 operates to adjust the front-to-back position of the sheet metal part. After adjustment, the lateral adjustment mechanism 40 operates to coarsely adjust the left-to-right position of the sheet metal part. After adjustment, the drive motor 52 on the fine adjustment mechanism 50 operates, driving the rotating shaft 53 connected to the output end to rotate. The rotating shaft 53 drives the drive disk 55 to rotate through the worm gear on its surface and the worm wheel on the drive disk 55. At the same time, it drives the drive disk 55 to move left or right. The drive disk 55 drives the connecting shaft 56 to move. The slide rod 58 on the connecting shaft 56 moves on the support frame 57, so that... The slide bar 58 drives the clamping mechanism 60 to move, thereby enabling the sheet metal part to be finely adjusted left and right. Then, the punching mechanism 20 works to punch holes in the sheet metal part. The large-range longitudinal and lateral adjustment mechanism 40 is separated from the fine-tuning mechanism 50, which is used for precise adjustment within a small range. The coarse adjustment quickly moves the workpiece to the vicinity of the target area, and then the fine-tuning mechanism 50 performs the "final step" of precise alignment. This effectively avoids the cumulative error caused by insufficient precision of a single mechanism. At the same time, each adjustment mechanism operates independently and has a simple structure. It can control the longitudinal, lateral, or fine-tuning actions individually according to processing requirements without moving the entire equipment or sheet metal part. This adapts to the continuous processing of sheet metal parts of different specifications and improves processing efficiency.

[0029] refer to Figure 4 , Figure 5 and Figure 6 The longitudinal adjustment mechanism 30 includes a pair of connecting plates 31, a first driving member 32, a first lead screw 33, a first moving block 34, a first moving plate 35, and a guide assembly 36. The bottoms of the pair of connecting plates 31 are fixedly connected to the top of the worktable 10. The first lead screw 33 is rotatably connected between the pair of connecting plates 31. The first driving member 32 is fixed to the connecting plate 31 on the front side of the worktable 10. The first driving member 32 is a motor, and its output end is coaxially connected to the first lead screw 33, enabling the first driving member 32 to coaxially drive the first lead screw 33. When rod 33 rotates, the surface of the first lead screw 33 is connected to the first moving block 34 through a threaded ball joint, so that the first lead screw 33 drives the first moving block 34 to move as the first driving member 32 rotates. The top of the first moving block 34 is fixedly connected to the bottom of the first moving plate 35, so that the first moving block 34 drives the first moving plate 35 to move longitudinally. The first moving plate 35 and the worktable 10 are connected by a guide assembly 36, so that the guide assembly 36 guides the first moving plate 35 to move back and forth, preventing the first moving plate 35 from deviating. The screw drive is connected to the first moving block 34 by the threaded connection, and is also guided by the guide. This makes the screw drive work together to form a drive-guide structure, which limits the lateral offset of the first moving plate 35, ensures that there is no shaking or jamming during longitudinal movement, and improves the movement stability of the sheet metal parts under load.

[0030] The guide assembly 36 includes a pair of guide rails 36-1 and a guide slider 36-2. The pair of guide rails 36-1 are symmetrically arranged on both sides of the first lead screw 33, so that the first lead screw 33 is located between the guide rails 36-1. The guide slider 36-2 is slidably connected to the surface of the guide rails 36-1, and the top of the guide slider 36-2 is fixedly connected to the bottom of the first moving plate 35, so that the guide slider 36-2 guides the first moving plate 35. By the pair of guide rails 36-1 being symmetrically distributed on both sides of the first lead screw 33, a bidirectional guiding constraint is formed, which strictly limits the first moving plate 35 and its lateral displacement, ensuring that it only moves along the longitudinal straight line, thereby improving the positioning accuracy of the longitudinal adjustment.

[0031] refer to Figure 4 , Figure 5 and Figure 6The lateral adjustment mechanism 40 includes a pair of symmetrically arranged fixed blocks 41, a second driving member 42, a second lead screw 43, a second moving block 44, a second moving plate 45, and a limiting assembly 46. The bottoms of the pair of fixed blocks 41 are fixedly connected to the top of the first moving plate 35, and the fixed blocks 41 are arranged laterally along the first moving block 34 on the top of the first moving plate 35. The second lead screw 43 is rotatably connected between the pair of fixed blocks 41, providing stable support. One end of the second lead screw 43 is coaxially connected to the output end of the second driving member 42, which is a motor. The second driving member 42 is fixedly connected to the fixed blocks 41, providing stable support. The second moving block 44... The ball screw 43 is threadedly connected to the second lead screw 43 through a ball screw thread engagement, causing the second lead screw 43 to rotate with the second drive member 42, thereby driving the second moving block 44 to move. The top of the second moving block 44 is fixedly connected to the bottom of the second moving plate 45, enabling the second moving block 44 to drive the second moving plate 45 to make left and right lateral adjustments. The limiting component 46 is set between the second moving plate 45 and the first moving plate, so that the limiting component 46 guides and limits the second moving plate 45, making the movement of the second moving plate 45 more stable when it rotates with the second lead screw 43. With the special limiting component 46, it forms a cooperative constraint with the lead screw drive, limiting the non-lateral displacement of the second moving plate 45, avoiding shaking or deviation during movement, and ensuring that the lateral adjustment process is smooth and without jamming.

[0032] The limiting assembly 46 includes a pair of guide rails 46-1 and a limiting slider 46-2. The pair of guide rails 46-1 are symmetrically arranged on both sides of the second lead screw 43. The bottom of the guide rails 46-1 is fixedly connected to the top of the first moving plate 35, and the guide rails 46-1 are arranged laterally along the first moving plate 35. The limiting slider 46-2 is slidably connected to the surface of the guide rails 46-1, and the top of the limiting slider 46-2 is fixedly connected to the bottom of the second moving plate 45, so that the limiting slider 46-2 limits and guides the second moving plate 45. The guide rails 46-1 are symmetrically distributed on both sides of the second lead screw 43, forming a bidirectional constraint, strictly limiting the longitudinal offset of the second moving plate 45, ensuring that it only moves in a lateral straight line, and further improving the positioning accuracy of the lateral adjustment.

[0033] refer to Figure 4 and Figure 7The clamping mechanism 60 includes a placement plate 61 with an internal cavity, an adjusting turntable 62, a bidirectional lead screw 63, and a pair of clamping frames 64. The bottom of the placement plate 61 is fixedly connected to the top of the slide rail. The bidirectional lead screw 63 is disposed in the cavity of the placement plate 61, and both ends of the bidirectional lead screw are rotatably connected to the placement plate 61. One end of the bidirectional lead screw 63 passes through the placement plate 61 and is fixedly connected to the adjusting turntable 62. The adjusting turntable 62 is provided with a rotating handle. Rotating the handle drives the adjusting turntable 62 to rotate, which in turn drives the bidirectional lead screw 63 to rotate. The surface of the bidirectional lead screw 63 is threaded to a pair of clamping frames 64 through ball threads. The clamping frames 64 are symmetrically arranged on the bidirectional lead screw 63, so that the bidirectional lead screw 63 drives the two clamping frames 64 to move relative to each other, clamping and fixing the sheet metal parts. At the same time, the top of the placement plate 61 is provided with a limiting groove 65 for the movement of the clamping frames 64, so that the limiting groove 65 guides and limits the movement of the clamping frames 64.

[0034] The system employs a threaded connection between a bidirectional lead screw 63 and a pair of clamping frames 64. When the adjusting turntable 62 drives the bidirectional lead screw 63 to rotate, the two clamping frames 64 can move closer or further apart synchronously, ensuring that the sheet metal part is always clamped in the center position, avoiding offset and improving positioning consistency. At the same time, the clamping or releasing action can be completed by manually rotating the adjusting turntable 62, without the need for a complex automated control structure, making the operation threshold low. In addition, the lead screw drive has good self-locking properties, making it difficult to loosen after clamping, thus ensuring stability during the processing.

[0035] The implementation principle of this application embodiment is as follows: In implementation, the sheet metal part is placed on the placement plate 61; between the two clamping frames 64, the adjusting turntable 62 on the placement plate 61 is rotated, the adjusting turntable 62 drives the bidirectional lead screw 63 to rotate, the bidirectional lead screw 63 drives the pair of clamping frames 64 to move relative to each other, so that the clamping frames 64 clamp and fix the sheet metal part. After fixing, the first driving member 32 on the longitudinal adjustment mechanism 30 is activated, the first driving member 32 drives the first lead screw 33 to rotate, the first lead screw 33 drives the first moving block 34 connected to the first lead screw 33 to move, the first moving block 34 drives the first moving plate 35 to move, so that the first moving plate 35 drives the transverse adjustment mechanism 40, the clamping mechanism 60 and the fine adjustment mechanism 50 to perform longitudinal adjustment as a whole, so that the sheet metal part is adjusted longitudinally. After adjustment, the transverse adjustment mechanism 40 is activated, the second driving member 42 drives the second lead screw 43 to rotate, the second lead screw 43 drives the second moving block 44 to move, the second moving block 44 moves ... The moving block 44 drives the second moving plate 45 to move along the guide rail 46-1, causing the second moving plate 45 to move the fine-tuning mechanism 50 and the clamping mechanism 60 as a whole, thereby adjusting the left and right movement of the sheet metal part. After adjustment, the drive motor 52 on one motor support 51 is started, while the other drive motor 52 is de-energized. The drive motor 52 drives the rotating shaft 53 to rotate, and the rotating shaft 53 drives the drive disk 55 to rotate. The drive disk 55 moves simultaneously with the worm gear on the rotating shaft 53. The drive disk 55 drives the slide rod 58 to move on the support frame 57 through the connecting shaft 56. The slide rod 58 drives the placement plate 61 to make fine adjustments, thereby making left and right fine adjustments to the sheet metal part on the placement plate 61, forming a three-level adjustment system of "coarse adjustment positioning + fine adjustment calibration". This system ensures the efficiency of large-range movement and achieves the accuracy of small-amplitude fine adjustments, effectively avoiding the cumulative error of a single mechanism, greatly improving the calibration accuracy of the punching position of the sheet metal part, and reducing hole position deviation.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A punching device for sheet metal processing, comprising a worktable (10) and a punching mechanism (20), wherein the punching mechanism (20) is fixed on the top of the worktable (10), characterized in that, The top of the workbench (10) is provided with a longitudinal adjustment mechanism (30) for adjusting the longitudinal position of the sheet metal parts. The longitudinal adjustment mechanism (30) is provided with a transverse adjustment mechanism (40) for adjusting the transverse position of the sheet metal parts. The transverse adjustment mechanism (40) is provided with a fine adjustment mechanism (50) for fine adjustment of the transverse position of the sheet metal parts. The fine adjustment mechanism (50) is provided with a clamping mechanism (60) for placing and clamping the sheet metal parts. The clamping mechanism (60), the longitudinal adjustment mechanism (30), the transverse adjustment mechanism (40) and the fine adjustment mechanism (50) are all located below the punching mechanism (20). The fine-tuning mechanism (50) includes a pair of motor supports (51), a drive motor (52), a rotating shaft (53), a pair of brackets (54), a drive disc (55), a connecting shaft (56), a support frame (57), and a slide bar (58). The motor supports (51) and brackets (54) are both mounted on the lateral adjustment mechanism (40), and the pair of brackets (54) are located between the motor supports (51). The drive motor (52) is fixed on the motor supports (51), and the rotating shaft (53) is mounted on the motor supports (54). 3) The rotating shaft (53) is rotatably mounted on the bracket (54), and both ends of the rotating shaft (53) pass through the bracket (54) and are connected to the output end of the drive motor (52). The support frame (57) is fixed on the bracket (54), the slide rod (58) is slidably connected on the support frame (57), both ends of the connecting shaft (56) are connected to the slide rod (58), the drive disk (55) is rotatably connected on the connecting shaft (56), and the bottom of the drive disk (55) is meshed with the rotating shaft (53).

2. The punching device for sheet metal processing according to claim 1, characterized in that, The longitudinal adjustment mechanism (30) includes a connecting plate (31), a first driving member (32), a first lead screw (33), a first moving block (34), a first moving plate (35), and a guide assembly (36) for guiding the first moving plate (35). The bottom of the connecting plate (31) is fixedly connected to the top of the worktable (10). The first driving member (32) is mounted on the connecting plate (31). The output end of the first driving member (32) is fixedly connected to one end of the first lead screw (33). The first moving block (34) is disposed on the surface of the first lead screw (33), and the first lead screw (33) is threadedly connected to the first moving block (34). The top of the first moving block (34) is fixedly connected to the bottom of the first moving plate (35). The bottom of the guide assembly (36) is connected to the worktable (10), and the top of the guide assembly (36) is connected to the bottom of the first moving plate (35).

3. The punching device for sheet metal processing according to claim 2, characterized in that, The guide assembly (36) includes a pair of guide rails (36-1) and a guide slider (36-2). The bottom of the guide rails (36-1) is fixed to the top of the worktable (10), and the first lead screw (33) is located between the pair of guide rails (36-1). The guide slider (36-2) is slidably connected to the surface of the guide rails (36-1), and the top of the guide slider (36-2) is fixedly connected to the bottom of the first moving plate (35).

4. A punching device for sheet metal processing according to claim 2, characterized in that, The lateral adjustment mechanism (40) includes a pair of fixed blocks (41), a second driving member (42), a second lead screw (43), a second moving block (44), a second moving plate (45), and a limiting assembly (46) for guiding the second moving plate (45). The bottom of the fixed block (41) is fixedly connected to the first moving plate (35). The second lead screw (43) is disposed between the pair of fixed blocks (41) and is rotatably connected to the fixed blocks (41). The second driving member (42) is fixed to the fixed block (41). On 41), the output end of the second drive member (42) is coaxially connected to the second lead screw (43), the second moving block (44) is threadedly connected to the second lead screw (43), and the top of the second moving block (44) is fixedly connected to the bottom of the second moving plate (45). The limiting component (46) is set on the first moving plate (35), the top of the limiting component (46) is connected to the second moving plate (45), and the bottom of the motor support (51) and the bracket (54) is fixedly connected to the top of the second moving plate (45).

5. A punching device for sheet metal processing according to claim 4, characterized in that, The limiting component (46) includes a pair of guide rails (46-1) and a limiting slider (46-2). The guide rails (46-1) are disposed on the first moving plate (35), and the second lead screw (43) is located between the pair of guide rails (46-1). The limiting slider (46-2) is slidably connected to the guide rails (46-1), and the top of the limiting slider (46-2) is fixedly connected to the second moving plate (45).

6. A punching device for sheet metal processing according to claim 1, characterized in that, The clamping mechanism (60) includes a placement plate (61) with an internal cavity, an adjusting turntable (62), a bidirectional lead screw (63), and a pair of clamping frames (64). The bottom of the placement plate (61) is fixedly connected to the slide rod (58) on the fine-tuning mechanism (50). The bidirectional lead screw (63) is rotatably connected inside the placement plate (61), and one end of the bidirectional lead screw (63) passes through the placement plate (61) and is fixedly connected to the adjusting turntable (62). The pair of clamping frames (64) are threadedly connected to the surface of the bidirectional lead screw (63), so that the pair of clamping frames (64) move relative to the bidirectional lead screw (63).

7. A punching device for sheet metal processing according to claim 6, characterized in that, The top of the placement plate (61) has a limiting groove (65), which is used in conjunction with the clamping frame (64).

8. A punching device for sheet metal processing according to claim 1, characterized in that, The punching mechanism (20) includes an adjustable support column (21), a servo motor (22) and a drill bit (23). The servo motor (22) is fixed on the support column (21), and the output end of the servo motor (22) is connected to the drill bit (23).

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