Numerical control high-speed punching machine

Abstract

The numerical control high-speed punching machine comprises a punching base and a punch arranged above the punching base, the lower end face of the punch is fixedly connected with a plurality of punching plates arranged in the circumferential direction, the lower end face of the punch is fixedly connected with a supporting ring, a plurality of connecting grooves are formed in the supporting ring, and sliding blocks are slidably connected into the connecting grooves; a guide rod and a movable pipe are arranged in the punch, and the movable pipe is arranged on the side wall of the guide rod in a sliding and sleeving mode. In the punching process of a punch, hydraulic oil in a movable pipe is extruded in the process that a contact base makes contact with a workpiece so as to push a plurality of grinding blocks to grind the inner side, punched by a punching plate, of the workpiece, and meanwhile metal burrs at a punching opening in the upper end of the workpiece are ground and cleaned in cooperation with a sliding block; and the phenomenon that the stamping plate is pressed for a long time and deforms while the workpiece quality is affected due to burr residues is avoided.

Description

Technical Field

[0001] This invention relates to the field of CNC high-speed punching technology, and more particularly to a CNC high-speed punching machine. Background Technology

[0002] This CNC high-speed punch press is made of a special cast iron alloy, offering high rigidity and vibration resistance. The slide features a long guide design and is equipped with a slide balancing device to ensure precise and stable operation. All wear-resistant components are equipped with an electronically timed automatic lubrication system; if lubrication is insufficient, the punch press will automatically stop. An advanced and user-friendly control system ensures accurate slide operation and stopping. It can be integrated with any automated production needs, improving production efficiency and reducing costs.

[0003] Stamping is a common processing method in workpiece production. It involves creating holes or grooves on the surface of a workpiece by impacting it with a fixed stamping shape. High-speed punch presses are a type of stamping machine. During the stamping process, burrs are easily formed on the workpiece surface due to stamping and metal tearing. The main causes of burrs are: 1. The blanking clearance is too large, too small, or uneven; 2. The cutting edge of the die becomes dull; 3. The center lines of the punch and die change due to long-term vibration and impact, resulting in misalignment of the axes and the formation of single-sided burrs. When burrs appear, they will damage both the stamped workpiece and the stamping die, leading to the scrapping of the stamped parts or even the scrapping of the punch. Summary of the Invention

[0004] The purpose of this invention is to solve the problem of metal burrs appearing during the stamping process in the prior art, and to propose a CNC high-speed punching machine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A CNC high-speed punch press includes a punching base and a punch disposed above it. Multiple circumferentially arranged punching plates are fixedly connected to the lower end face of the punch. A support ring is fixedly connected to the lower end face of the punch. Multiple connecting grooves are formed within the support ring, and sliding blocks are slidably connected within the connecting grooves. A guide rod and a movable tube are provided inside the punch. The movable tube is slidably sleeved on the side wall of the guide rod. A rotating ring is sleeved on the side wall of the movable tube. The rotating ring is rotatably connected to the lower end face of the punch. A support mechanism for contacting, pressing, and supporting the punching plates is provided inside the rotating ring. A drive mechanism for driving the support mechanism during movement is provided inside the movable tube. A traction mechanism for rotating and pulling the rotating ring is provided between the movable tube and the rotating ring. The upper end face of the stamping base is provided with an installation groove, and a movable platform is slidably connected in the installation groove. A connecting base is fixedly connected to the lower end face of the stamping base. Both the connecting base and the movable platform are provided with multiple punching grooves. Both the connecting base and the movable platform are provided with a guide mechanism for guiding the stamping plate and grinding the stamping surface.

[0006] Preferably, the support mechanism includes a plurality of circumferentially arranged connecting plates slidably connected within the rotating ring, and a grinding block is fixedly connected to one end of the connecting plate away from the rotating ring, the grinding block being slidably connected to the lower end of the punch.

[0007] Preferably, the driving mechanism includes a contact base fixedly connected to the lower end of the movable tube, a piston fixedly connected to the lower end of the guide rod, the piston being slidably connected inside the movable tube, hydraulic oil being provided between the inner walls of the movable tube and the piston, a plurality of flow tubes being circumferentially fixedly connected to the side wall of the movable tube, the flow tubes being provided with corrugated pipes, the upper end of the flow tubes passing through a rotating ring and the end being connected to the sliding connection of a connecting plate, a push plate being fixedly connected to the end of the connecting plate located inside the rotating ring, and the hydraulic oil contacting the push plate.

[0008] Preferably, the traction mechanism includes a guide groove formed on the inner wall of the movable tube, and a mating block is fixedly connected to the inner wall of the rotating ring, the mating block being slidably connected in the guide groove.

[0009] Preferably, a limiting plate is fixedly connected to the inner side wall of the movable tube, the guide rod slides through the limiting plate, and a buffer spring is sleeved on the side wall of the guide rod, with the two ends of the buffer spring fixedly connected to the side walls of the guide rod and the limiting plate, respectively.

[0010] Preferably, a guide block is fixedly connected to the inner top of the connecting groove, a support rod is fixedly connected to the inner sidewall of the connecting groove, a movable groove is opened in the sliding block, the support rod is inserted through the movable groove, and a return spring is elastically connected between the sliding block and the opposite sidewall of the connecting groove, the return spring being sleeved on the sidewall of the support rod.

[0011] Preferably, the guiding mechanism includes multiple circumferentially arranged movable slots formed in the connecting base. Multiple buffer rods are slidably connected to the inner sidewall of the movable slots. Outer plates are slidably connected to the sidewalls of two of the buffer rods. Inner plates are slidably connected to the sidewalls of the two inner buffer rods. Connecting springs are elastically connected between the inner and outer plates and the opposite sidewalls of the movable slots. The inner and outer plates are both located near the slot opening of the movable slot.

[0012] Preferably, the inner side plate, the outer side plate and the opposite side wall of the movable groove are all elastically connected by connecting springs, and the connecting springs are sleeved on the side wall of the buffer rod.

[0013] Compared with the prior art, the beneficial effects of this invention are as follows: 1. By setting up a structure including a punch, a stamping plate, a sliding block, and a grinding block, the punch, during the stamping process, squeezes the hydraulic oil in the movable tube to propel multiple grinding blocks to grind the inner side of the workpiece where the stamping plate is stamping. At the same time, the sliding block works in conjunction with the punch to grind and clean the metal burrs at the upper stamping opening of the workpiece, avoiding the presence of burr residue that could affect the quality of the workpiece and cause the stamping plate to deform under long-term pressure.

[0014] 2. By setting up structures such as inner side plates, outer side plates, movable grooves, and buffer rods, the stamping plate contacts the inner and outer side plates simultaneously in the groove, driving the inner and outer side plates to move and grind the bottom of the workpiece. At the same time, the stamping plate is guided during the movement, avoiding the stamping plate from deflecting and surface wear during the stamping process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the punch proposed in this invention; Figure 2 This is a schematic diagram of the bottom structure of the stamping base proposed in this invention; Figure 3 This is a schematic diagram of the rotating ring structure proposed in this invention; Figure 4 This is a schematic diagram of the internal structure of the active tube proposed in this invention; Figure 5 This is a schematic diagram of the internal structure of the sliding block proposed in this invention; Figure 6 This is a schematic diagram of the internal structure of the connecting base proposed in this invention.

[0016] In the diagram: 1. Stamping base, 2. Punch, 3. Stamping plate, 4. Mounting slot, 5. Movable platform, 6. Slot, 7. Connecting base, 8. Rotating ring, 9. Movable tube, 10. Contact base, 11. Support ring, 12. Sliding block, 13. Connecting plate, 14. Grinding block, 15. Guide block, 16. Connecting slot, 17. Support rod, 18. Limiting slot, 19. Guide rod, 20. Guide slot, 21. Piston, 22. Flow pipe, 23. Bellows, 24. Movable slot, 25. Outer side plate, 26. Inner side plate, 27. Telescopic rod, 28. Buffer rod, 29. Connecting rod. Detailed Implementation

[0017] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0019] Reference Figures 1-6 A CNC high-speed punch press includes a punching base 1 and a punch 2 disposed above it. A plurality of circumferentially arranged punching plates 3 are fixedly connected to the lower end face of the punch 2. A support ring 11 is fixedly connected to the lower end face of the punch 2. A plurality of connecting grooves are opened in the support ring 11. A sliding block 12 is slidably connected in the connecting groove. A guide block 15 is fixedly connected to the inner top of the connecting groove. A support rod 17 is fixedly connected to the inner side wall of the connecting groove. A connecting groove 16 is opened in the sliding block 12. The support rod 17 is disposed through the connecting groove 16. A return spring is elastically connected between the sliding block 12 and the opposite side wall of the connecting groove. The return spring is sleeved on the side wall of the support rod 17. The punch 2 is provided with a guide rod 19 and a movable tube 9. The movable tube 9 is slidably sleeved on the side wall of the guide rod 19. A rotating ring 8 is sleeved on the side wall of the movable tube 9. The rotating ring 8 is rotatably connected to the lower end face of the punch 2. The rotating ring 8 is provided with a support mechanism for contacting, pressing and supporting the stamping plate 3. The support mechanism includes multiple circumferentially arranged connecting plates 13 that are slidably connected in the rotating ring 8. A grinding block 14 is fixedly connected to the end of the connecting plate 13 away from the rotating ring 8. The grinding block 14 is slidably connected to the lower end of the punch 2.

[0020] The movable tube 9 is equipped with a drive mechanism for driving the support mechanism during movement. The drive mechanism includes a contact base 10 fixedly connected to the lower end of the movable tube 9, a piston 21 fixedly connected to the lower end of the guide rod 19, the piston 21 being slidably connected inside the movable tube 9, a limit plate fixedly connected to the inner side wall of the movable tube 9, the guide rod 19 passing through and slidably connected to the limit plate, and a buffer spring sleeved on the side wall of the guide rod 19. The two ends of the buffer spring are respectively fixedly connected to the side wall of the guide rod 19 and the limit plate. Hydraulic oil is provided between the inner walls of the movable tube 9 and the piston 21. Multiple flow tubes 22 are fixedly connected circumferentially to the side wall of the movable tube 9. Corrugated pipes 23 are provided on the flow tubes 22. The upper end of the flow tube 22 passes through the rotating ring 8 and is connected to the sliding connection of the connecting plate 13. The end of the connecting plate 13 located inside the rotating ring 8 is fixedly connected to a push plate, and the hydraulic oil is in contact with the push plate.

[0021] A traction mechanism for rotating and pulling the rotating ring 8 is provided between the movable tube 9 and the rotating ring 8. The traction mechanism includes a guide groove 20 opened on the inner side wall of the movable tube 9, and a mating block is fixedly connected to the inner side wall of the rotating ring 8. The mating block is slidably connected in the guide groove 20. The upper end face of the stamping base 1 is provided with an installation groove 4, and a movable platform 5 is slidably connected in the installation groove 4. The lower end face of the stamping base 1 is fixedly connected with a connecting base 7, and multiple stamping grooves 6 are provided on both the connecting base 7 and the movable platform 5. Both the connecting base 7 and the movable platform 5 are equipped with guide mechanisms for guiding the stamping plate 3 and grinding the stamping surface. The guide mechanism includes multiple circumferentially arranged movable slots 24 opened in the connecting base 7. Multiple buffer rods 28 are slidably connected to the inner side wall of the movable slot 24. Connecting springs are elastically connected between the inner side plate 26, the outer side plate 25 and the opposite side wall of the movable slot 24. The connecting springs are sleeved on the side wall of the buffer rods 28. Outer plates 25 are slidably connected to the side walls of the two buffer rods 28, and inner plates 26 are slidably connected to the side walls of the two inner buffer rods 28. Connecting springs are elastically connected between the inner plates 26, the outer plates 25 and the opposite side walls of the movable groove 24. The inner plates 26 and the outer plates 25 are both located near the groove opening of the movable groove 24.

[0022] The functional principle of this invention can be explained through the following operational methods: like Figure 1-6As shown, the punch 2 performs a reciprocating stamping process under the drive of a high-speed punch press. During this process, multiple stamping plates 3 below the punch 2 cooperate with the movable platform 5 on the stamping base 1 and multiple slots 6 on the connecting base 7 to perform stamping processing on the workpiece in the shape of the slots 6. During this process, the contact base 10 first contacts the movable platform 5. At this time, the movable tube 9 is pushed by the contact base 10 to slide on the guide rod 19 inside the punch 2. During the movement of the movable tube 9, the piston 21 on the lower end face of the guide rod 19 compresses the hydraulic oil in the movable tube 9, compresses the hydraulic oil and flows it through the flow pipe 22 into the rotating ring 8, and contacts the push plates of multiple connecting plates 13 located in the rotating ring 8. As the amount of hydraulic oil increases, the push plates... Multiple connecting plates 13 move, causing the grinding blocks 14 on them to move closer to the stamping plate 3. During this process, as the movable tube 9 moves upward, the guide groove 20 on its side wall contacts the mating block inside the rotating ring 8. Since the guide groove 20 has an arc-shaped structure, the movable tube 9 will rely on its arc-shaped structure to drive the mating block to rotate during the upward movement. That is, the movement of the mating block drives the rotating ring 8 to rotate below the punch 2, thereby achieving the grinding treatment of the multiple grinding blocks 14 on the side wall of the rotating ring 8 and the stamping plate 3 at the stamping position on the upper end face of the workpiece. At the same time, under the rotation of the rotating ring 8, the grinding blocks 14 and the stamping position are rotated and contacted for grinding, ensuring the smoothness of the stamping position on the upper end face of the workpiece and avoiding the generation of burrs.

[0023] As the punch 2 descends, the stamping process of the stamping plate 3 deepens. At this point, the sliding block 12, located in the connecting groove of the support ring 11, contacts the upper surface of the workpiece. During this process, the support rod 17 guides the movement of the sliding block 12, and simultaneously, in conjunction with the connecting groove 16, provides support for the sliding block 12 during its movement and guides its lateral movement. When the sliding block 12 is pressed by the workpiece, its lower surface contacts the guide block 15, and the wedge-shaped surface structure of both (e.g., Figure 5 As shown, the contact surface between the sliding block 12 and the guide block 15 is a wedge-shaped structure. The sliding block 12 and the guide block 15 will slide relative to each other, that is, the sliding block 12 will slide relative to each other in the connecting groove. At this time, the sliding block 12 grinds the stamping position above the workpiece. The sliding block 12 and the grinding block 14 work together to grind the relative inner and outer stamping positions of the stamping plate 3 during the stamping process, so as to avoid the phenomenon of burrs appearing on the upper end face of the workpiece during the stamping process.

[0024] As the stamping plate 3 moves further down, it is now positioned within the sliding groove 24 on the movable platform 5 and connecting base 7. The stamping plate 3 contacts the inner side plate 26 and the outer side plate 25 within the movable groove 24. At this point, the inner side plate 26 and the outer side plate 25, located above the movable platform 5, move relative to each other due to the contact of the stamping plate 3. Simultaneously, the buffer rod 28 provides buffering and guides the movement of the inner side plate 26 and the outer side plate 25, as well as provides reset buffering. (During this process, the opposing sidewalls of the inner side plate 26 and the outer side plate 25 need to be chamfered. Initially, there is a gap between the inner side plate 26 and the outer side plate 25 to prevent the stamping plate 3 from contacting the inner side plate 26 and the outer side plate 25.) (The side plate 26 or the outer plate 25 abuts against each other, causing damage to the stamping plate 3) Under the contact drive of the stamping plate 3, the inner side plate 26 and the outer plate 25 move relative to each other. At this time, the inner side plate 26 and the outer plate 25 contact the lower end of the workpiece, and clean and grind the burrs at the stamping position below the workpiece by sliding movement to avoid the phenomenon of burr residue. As the stamping plate 3 moves down, when it contacts the inside of the groove 6 on the connecting base 7, the inner side plate 26 and the outer plate 25 inside the connecting base 7 guide and grind the stamping plate 3 to maintain the sharpness of the stamping plate 3 and guide it during the movement process.

[0025] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A CNC high-speed punch press, comprising a punching base (1) and a punch (2) disposed thereon, characterized in that, The lower end face of the punch (2) is fixedly connected to a plurality of circumferentially arranged stamping plates (3), and the lower end face of the punch (2) is fixedly connected to a support ring (11). The support ring (11) has a plurality of connecting grooves, and a sliding block (12) is slidably connected in the connecting grooves. The punch (2) is provided with a guide rod (19) and a movable tube (9). The movable tube (9) is slidably sleeved on the side wall of the guide rod (19). A rotating ring (8) is sleeved on the side wall of the movable tube (9). The rotating ring (8) is rotatably connected to the lower end face of the punch (2). The rotating ring (8) is provided with a support mechanism for contacting and pressing the stamping plates (3) and supporting them. The movable tube (9) is provided with a drive mechanism for driving the support mechanism during its movement. A traction mechanism for rotating and pulling the rotating ring (8) is provided between the movable tube (9) and the rotating ring (8). The upper end face of the stamping base (1) is provided with an installation groove (4), and a movable platform (5) is slidably connected in the installation groove (4). A connecting base (7) is fixedly connected to the lower end face of the stamping base (1). Multiple punching grooves (6) are provided on both the connecting base (7) and the movable platform (5). A guiding mechanism for guiding the stamping plate (3) and grinding the stamping surface is provided in both the connecting base (7) and the movable platform (5).

2. The CNC high-speed punching machine according to claim 1, characterized in that, The support mechanism includes multiple circumferentially arranged connecting plates (13) that are slidably connected within the rotating ring (8). A grinding block (14) is fixedly connected to one end of the connecting plate (13) away from the rotating ring (8). The grinding block (14) is slidably connected to the lower end of the punch (2).

3. A CNC high-speed punching machine according to claim 2, characterized in that, The driving mechanism includes a contact base (10) fixedly connected to the lower end of the movable tube (9), a piston (21) fixedly connected to the lower end of the guide rod (19), the piston (21) being slidably connected inside the movable tube (9), hydraulic oil being provided between the inner walls of the movable tube (9) and the piston (21), a plurality of flow pipes (22) being fixedly connected circumferentially to the side wall of the movable tube (9), a corrugated pipe (23) being provided on the flow pipe (22), the upper end of the flow pipe (22) penetrating the rotating ring (8), and the end being connected to the sliding connection of the connecting plate (13), the end of the connecting plate (13) located inside the rotating ring (8) being fixedly connected to a push plate, and the hydraulic oil being in contact with the push plate.

4. A CNC high-speed punching machine according to claim 3, characterized in that, The traction mechanism includes a guide groove (20) opened on the inner wall of the movable tube (9), and a mating block is fixedly connected to the inner wall of the rotating ring (8), and the mating block is slidably connected in the guide groove (20).

5. A CNC high-speed punching machine according to claim 4, characterized in that, The inner wall of the movable tube (9) is fixedly connected to a limiting plate, the guide rod (19) slides through the limiting plate, and a buffer spring is sleeved on the side wall of the guide rod (19). The two ends of the buffer spring are respectively fixedly connected to the side wall of the guide rod (19) and the limiting plate.

6. A CNC high-speed punching machine according to claim 5, characterized in that, A guide block (15) is fixedly connected to the top of the connecting groove, and a support rod (17) is fixedly connected to the inner side wall of the connecting groove. A connecting groove (16) is opened in the sliding block (12), and the support rod (17) is inserted through the connecting groove (16). A return spring is elastically connected between the sliding block (12) and the opposite side wall of the connecting groove, and the return spring is sleeved on the side wall of the support rod (17).

7. A CNC high-speed punching machine according to claim 6, characterized in that, The guiding mechanism includes multiple circumferentially arranged movable slots (24) opened in the connecting base (7). Multiple buffer rods (28) are slidably connected to the inner side wall of the movable slots (24). Outer plates (25) are slidably connected to the side walls of two of the buffer rods (28). Inner plates (26) are slidably connected to the side walls of the two inner buffer rods (28). Connecting springs are elastically connected between the inner plates (26), the outer plates (25) and the opposite side walls of the movable slots (24). The inner plates (26) and the outer plates (25) are both located near the slot opening of the movable slots (24).

8. A CNC high-speed punching machine according to claim 7, characterized in that, The inner side plate (26), the outer side plate (25) and the opposite side wall of the movable groove (24) are all elastically connected by connecting springs, which are sleeved on the side wall of the buffer rod (28).

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