High-precision shaft hole punching die for plate parts

Abstract

The utility model discloses a sheet high-precision shaft hole punching die which comprises a base, a supporting frame is fixedly connected to the upper surface of the base, a lap joint plate is fixedly connected to the upper surface of the supporting frame, an air cylinder is fixedly connected to the interior of the lap joint plate, a buffering assembly is arranged outside the base, and the air cylinder is fixedly connected to the interior of the lap joint plate. The buffer assembly comprises a crimping block, an elastic piece and a base plate; the lower surface of the motor is fixedly connected with the base, the output end of the motor is fixedly connected with a transverse shaft, the end, away from the motor, of the transverse shaft is rotationally connected with a fixing block, the lower surface of the fixing block is fixedly connected with the base, and the outer portion of the transverse shaft is fixedly connected with a plurality of clamping blocks. By means of the structure, the clamping block is driven by the transverse shaft to rapidly fix a plate part, accurate alignment is conducted in combination with the pointer on the limiting plate, and in addition, in the punching process, the lower die base can be prevented from being greatly impacted through mutual cooperation of the pressing connection block and the elastic part.

Description

Technical Field

[0001] This utility model relates to the field of mold processing technology, and in particular to a high-precision shaft hole punching mold for sheet metal parts. Background Technology

[0002] A shaft hole punching die is a type of die used to punch shaft holes in metal sheets. This type of die typically consists of an upper punch and a lower mating die. The upper punch has a circumferential convex arc, and the lower mating die has a matching concave arc. When the upper punch and lower mating die are engaged, the arc of the die cavity and the arc of the tangent convexity completely coincide and press together, thereby achieving precise punching of the shaft hole. For example, a Chinese patent discloses a high-precision shaft hole punching die for sheet metal parts, with application number CN201921191157.1. This device can pull out the punch, and then the upper and lower template auxiliary sleeves can be disassembled. The auxiliary sleeves can be replaced according to the diameter of the hole to be punched. This setup is simple in structure, facilitates the replacement of the die base with the required punching diameter, saves costs, and improves production efficiency. However, during the punching process, it is necessary to fix and align the die to prevent lateral movement during processing. At the same time, excessive punching force during processing can cause certain damage to the parts. In addition, debris will accumulate on the die base and needs to be cleaned manually, which is not convenient enough. Utility Model Content

[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a high-precision shaft hole punching die for sheet metal. The die uses a horizontal shaft to drive a clamping block to quickly fix the sheet metal and uses a pointer on a limit plate for precise alignment. In addition, during the punching process, the cooperation between the pressing block and the elastic element can prevent the lower die base from being subjected to large impacts.

[0004] This utility model also provides a high-precision shaft hole punching die for sheet metal, comprising: a base, a support frame fixedly connected to the upper surface of the base, an overlapping plate fixedly connected to the upper surface of the support frame, a cylinder fixedly connected inside the overlapping plate, an upper die holder fixedly connected to the output end of the cylinder, a punch fixedly connected to the lower surface of the upper die holder, a lower die holder fixedly connected to the upper surface of the base, and a cutting groove hole provided inside the lower die holder; a motor, the lower surface of the motor fixedly connected to the base, a horizontal shaft fixedly connected to the output end of the motor, an end of the horizontal shaft away from the motor rotatably connected to a fixed block, the lower surface of the fixed block fixedly connected to the base, multiple locking blocks fixedly connected to the outside of the horizontal shaft, a fan provided on the side surface of the base, and a buffer assembly provided on the outside of the base. Through these components, the horizontal shaft drives the locking blocks to quickly fix the sheet metal, and precise alignment is achieved with the pointer on the limit plate. Furthermore, during the punching process, the cooperation between the pressing block and the elastic element prevents the lower die holder from suffering significant impact.

[0005] According to the present invention, a high-precision axial hole punching die for sheet metal is provided, wherein the upper die base is located above the lower die base, and the punch of the upper die base corresponds one-to-one with the cutting slots of the lower die base. Through these components, the punch and the cutting slots cooperate to punch axial holes in the sheet metal.

[0006] According to the present invention, a high-precision shaft hole punching die for sheet metal includes two symmetrically distributed fixing blocks located on both sides of the lower die base. These components, through the fixing blocks, provide rotational support for the horizontal shaft, thus achieving a fixing function.

[0007] According to the present invention, a high-precision axial hole punching die for sheet metal includes a guide bar fixedly connected to the upper surface of the base. The upper surface of the guide bar is fixedly connected to an overlapping plate, and the outer surface of the guide bar is slidably connected to an upper die holder. Through these components, the guide bar is fixed by the overlapping plate, allowing the upper die holder to slide up and down on the guide bar.

[0008] According to the present invention, a high-precision shaft hole punching die for sheet metal includes a base with an internal slot, through which a collection box is fixedly mounted. These components allow the collection box to be mounted within the slot, and the collection box collects debris.

[0009] According to the high-precision axial hole punching die for sheet metal described in this utility model, a right-angle baffle is fixedly connected to the upper surface of the collection box, and the outside of the right-angle baffle is engaged with the base. Through these components, the right-angle baffle provides protection, facilitating the entry of debris blown by the fan into the collection box.

[0010] According to the present invention, a high-precision shaft hole punching die for sheet metal includes a buffer assembly comprising a pad, the side surface of which is fixedly connected to a base, an elastic element fixedly connected to the upper surface of the pad, and a pressing block fixedly connected to the end of the elastic element away from the pad. Through these components, and the cooperation of the elastic element and the pressing block, the sheet metal can be buffered, effectively preventing the lower die base from suffering significant impact.

[0011] According to the present invention, a high-precision axial hole punching die for sheet metal comprises a lead screw rotatably connected to the upper surface of the base, a gear one fixedly connected to the outside of the lead screw, a timing belt meshing with the outside of the gear one, a gear two meshing with the inside of the timing belt, and a gear two fixedly connected to the inside of another lead screw. The bottom end of the other lead screw is rotatably connected to the base, and a limit plate is threadedly connected to the outside of the lead screw. A pointer is provided on the outside of the limit plate. Through the above components, the lead screw drives the limit plate to fix the sheet metal, and the pointer is used to align the punching position.

[0012] According to the present invention, a high-precision shaft hole punching die for sheet metal includes a base with two electrically operated telescopic rods fixedly connected inside. The output ends of both electric telescopic rods are fixedly connected to upright plates, and the exterior of the upright plates is slidably connected to a lower die base. With these components, when surface cleaning is required using a blower, the electric telescopic rods are activated to move the upright plates to block debris, allowing it to enter the collection box.

[0013] Beneficial effects: Compared with the existing technology, this new type of high-precision shaft hole punching die for sheet metal uses a horizontal shaft to drive a clamping block to quickly fix the sheet metal and uses a pointer on a limit plate for precise alignment. In addition, during the punching process, the cooperation between the pressing block and the elastic element can prevent the lower die base from being subjected to large impacts. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a complete structural diagram of the high-precision shaft hole punching die for sheet metal parts according to this utility model;

[0016] Figure 2 This is a side view of the high-precision shaft hole punching die for sheet metal parts according to this utility model;

[0017] Figure 3 This is a cross-sectional view of the high-precision shaft hole punching die for sheet metal parts according to this utility model;

[0018] Figure 4 This is a structural diagram of the punching mechanism of the high-precision shaft hole punching die for sheet metal parts according to this utility model;

[0019] Figure 5 This utility model provides a high-precision punching die for cutting shaft holes in sheet metal parts. Figure 3 Partial structural diagram at point B;

[0020] Figure 6 This is a structural diagram of the transmission mechanism of the high-precision shaft hole punching die for sheet metal parts according to this utility model.

[0021] Legend:

[0022] 1. Base; 2. Support frame; 3. Overlap plate; 4. Cylinder; 5. Upper mold base; 6. Punch; 7. Lower mold base; 8. Grooving hole; 9. Motor; 10. Horizontal shaft; 11. Fixing block; 12. Clamping block; 13. Fan; 14. Guide bar; 15. Collection box; 16. Right-angle baffle; 17. Pad plate; 18. Elastic element; 19. Pressing block; 20. Lead screw; 21. Limiting plate; 22. Pointer; 23. Gear 1; 24. Gear 2; 25. Synchronous belt; 26. Electric telescopic rod; 27. Vertical plate. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] Reference Figure 1-6 This utility model provides a high-precision shaft hole punching die for sheet metal, comprising: a base 1, a support frame 2 fixedly connected to the upper surface of the base 1 for fixing and supporting, an overlapping plate 3 fixedly connected to the upper surface of the support frame 2 for fixing a cylinder 4, a cylinder 4 fixedly connected inside the overlapping plate 3, an upper die base 5 fixedly connected to the output end of the cylinder 4 for mounting a punch 6, a punch 6 fixedly connected to the lower surface of the upper die base 5 for punching holes in the sheet metal, and a lower die base 7 fixedly connected to the upper surface of the base 1, with a cutting groove 8 inside the lower die base 7 for use with the punch 6.

[0025] The lower surface of the motor 9 is fixedly connected to the base 1. The output end of the motor 9 is fixedly connected to a horizontal shaft 10, which drives multiple locking blocks 12 to rotate. The end of the horizontal shaft 10 away from the motor 9 is rotatably connected to a fixing block 11. The lower surface of the fixing block 11 is fixedly connected to the base 1. Multiple locking blocks 12 are fixedly connected to the outside of the horizontal shaft 10 to fix one side of the sheet metal. A fan 13 is provided on the side surface of the base 1 to blow the debris into the collection box 15. A buffer assembly is provided on the outside of the base 1.

[0026] A guide bar 14 is fixedly connected to the upper surface of the base 1. The upper surface of the guide bar 14 is fixedly connected to the overlapping plate 3. The outside of the guide bar 14 is slidably connected to the upper mold base 5. The upper mold base 5 is located above the lower mold base 7. The punch 6 of the upper mold base 5 corresponds one-to-one with the cutting hole 8 of the lower mold base 7. There are two fixing blocks 11 and they are symmetrically distributed. The two fixing blocks 11 are located on both sides of the lower mold base 7. The base 1 has a hole groove inside. A collection box 15 is fixedly installed on the base 1 through the hole groove. It is a container for collecting the debris after punching.

[0027] A right-angle baffle 16 is fixedly connected to the upper surface of the collection box 15, allowing for quick installation and disassembly of the collection box 15 and facilitating rapid cleaning of debris from the collection box 15. The outer side of the right-angle baffle 16 is engaged with the base 1. A lead screw 20 is rotatably connected to the upper surface of the base 1 to adjust the position of the limiting plate 21 for easy fixation. A gear 23 is fixedly connected to the outer side of the lead screw 20. A timing belt 25 is meshed with the outer side of the gear 23. A gear 24 is meshed with the inner side of the timing belt 25. The inner side of the gear 24 is fixedly connected to another lead screw 20. The bottom end of the other lead screw 20 is rotatably connected to the base 1. A limiting plate 21 is threadedly connected to the outer side of the lead screw 20. A pointer 22 is provided on the outer side of the limiting plate 21. The pointer 22 is parallel to the cutting hole 8, allowing for punching and alignment of the sheet material after fixation, making the punching position more accurate.

[0028] The cushioning assembly includes a pad 17, the side surface of which is fixedly connected to the base 1, and an elastic element 18 is fixedly connected to the upper surface of the pad 17 for cushioning. A pressing block 19 is fixedly connected to the end of the elastic element 18 away from the pad 17 for fixing and compressing the elastic element 18. When the sheet material is processed, the impact damage can be reduced by the pressing block 19 and the elastic element 18.

[0029] The base 1 has two electric telescopic rods 26 fixedly connected inside, which drive the upright plate 27 to move up and down. The output ends of the two electric telescopic rods 26 are fixedly connected to the upright plate 27 to block the debris and prevent the debris from spreading in all directions. The outside of the upright plate 27 is slidably connected to the lower mold base 7.

[0030] Working principle: First, the sheet metal is placed on the upper die base 5. Rotating the lead screw 20 drives gear 23 to rotate, which in turn drives the synchronous belt 25 to rotate gear 24. Gear 24 drives another lead screw 20 to rotate synchronously, causing the limiting plate 21 outside the lead screw 20 to move downwards, facilitating the fixing of the sheet metal. Since the pointer 22 is parallel to the cutting hole 8, positioning can be achieved using the pointer 22, ensuring that the position on the sheet metal to be punched corresponds to the pointer 22. Then, the motor 9 is started... The horizontal axis 10 causes the locking block 12 to rotate, thereby fixing the locking block 12 to the other side of the sheet metal. After it is fixed, the cylinder 4 is started to drive the upper die base 5 to make the punch 6 punch the sheet metal. The pressing block 19 and the elastic element 18 can provide a certain buffer. After the punching is completed, the electric telescopic rod 26 is started to move the vertical plate 27 upward to block the debris in the middle position and prevent it from scattering to the surroundings. Then the fan 13 is started to blow the debris into the knife collection box 15. When the collection box 15 is full, the collection box 15 can be removed.

[0031] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A high-precision punching die for shaft holes in sheet metal, characterized in that, include: A base (1) is fixedly connected to a support frame (2) on its upper surface. A lap plate (3) is fixedly connected to the upper surface of the support frame (2). A cylinder (4) is fixedly connected inside the lap plate (3). An upper mold base (5) is fixedly connected to the output end of the cylinder (4). A punch (6) is fixedly connected to the lower surface of the upper mold base (5). A lower mold base (7) is fixedly connected to the upper surface of the base (1). A slotting hole (8) is provided inside the lower mold base (7). An electric motor (9) is fixedly connected to a base (1) on its lower surface. A horizontal shaft (10) is fixedly connected to the output end of the electric motor (9). The end of the horizontal shaft (10) away from the electric motor (9) is rotatably connected to a fixed block (11). The lower surface of the fixed block (11) is fixedly connected to the base (1). Multiple locking blocks (12) are fixedly connected to the outside of the horizontal shaft (10). A fan (13) is provided on the side surface of the base (1). A buffer assembly is provided on the outside of the base (1).

2. The high-precision shaft hole punching die for sheet metal parts according to claim 1, characterized in that, The upper mold base (5) is located above the lower mold base (7), and the punch (6) of the upper mold base (5) corresponds one-to-one with the slot hole (8) of the lower mold base (7).

3. The high-precision shaft hole punching die for sheet metal parts according to claim 1, characterized in that, There are two fixed blocks (11) that are symmetrically distributed, and the two fixed blocks (11) are located on both sides of the lower mold base (7).

4. The high-precision shaft hole punching die for sheet metal parts according to claim 1, characterized in that, The upper surface of the base (1) is fixedly connected to a guide strip (14), the upper surface of the guide strip (14) is fixedly connected to the overlapping plate (3), and the outside of the guide strip (14) is slidably connected to the upper mold base (5).

5. A high-precision shaft hole punching die for sheet metal parts according to claim 1, characterized in that, The base (1) has a slot inside, and a collection box (15) is fixedly installed on the base (1) through the slot.

6. A high-precision shaft hole punching die for sheet metal parts according to claim 5, characterized in that, A right-angle baffle (16) is fixedly connected to the upper surface of the collection box (15), and the outside of the right-angle baffle (16) is engaged with the base (1).

7. A high-precision shaft hole punching die for sheet metal parts according to claim 1, characterized in that, The buffer assembly includes a pad (17), the side surface of which is fixedly connected to the base (1), and an elastic element (18) is fixedly connected to the upper surface of the pad (17). A pressing block (19) is fixedly connected to the end of the elastic element (18) away from the pad (17).

8. A high-precision shaft hole punching die for sheet metal parts according to claim 1, characterized in that, A lead screw (20) is rotatably connected to the upper surface of the base (1). A gear (23) is fixedly connected to the outside of the lead screw (20). A timing belt (25) is meshed with the outside of the gear (23). A gear (24) is meshed with the inside of the timing belt (25). The inside of the gear (24) is fixedly connected to another lead screw (20). The bottom end of the other lead screw (20) is rotatably connected to the base (1). A limit plate (21) is threadedly connected to the outside of the lead screw (20). A pointer (22) is provided on the outside of the limit plate (21).

9. A high-precision shaft hole punching die for sheet metal parts according to claim 1, characterized in that, The base (1) has two electric telescopic rods (26) fixedly connected inside. The output ends of the two electric telescopic rods (26) are fixedly connected to the upright plate (27). The outside of the upright plate (27) is slidably connected to the lower mold base (7).

Images