Superfine hole punch die

Abstract

This utility model relates to the field of stamping die technology, and provides a fine hole stamping die, including: a worktable and a workpiece; a lifting assembly fixedly installed at the four corners of the bottom of the worktable; a fixing assembly movably disposed above the worktable, which can clamp the workpiece therein, and its upper end is provided with a limit component; wherein, a set of guide grooves is opened at the upper end of the worktable, and the fixing assembly is movably disposed therein. This utility model flexibly adjusts the height of the worktable by setting the lifting assembly to adapt to different processing needs; the locking block of the fixing assembly cooperates with the guide groove and the limit pin to achieve precise horizontal positioning and fixing, and the workpiece positioning accuracy is improved by combining a scale; the upper and lower clamping blocks and elastic anti-slip pads firmly clamp the workpiece to prevent displacement; the limit cylinder restricts the swing of the drill bit through the guide hole to ensure drilling accuracy; the overall structure effectively suppresses the lateral displacement of the die, extends the service life of the die, and improves product processing quality and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and in particular to a fine hole stamping die. Background Technology

[0002] In modern manufacturing, ultra-fine hole stamping dies are widely used in electronics, precision instruments, medical devices, and other fields to process parts with tiny apertures. With the trend of product refinement and miniaturization, higher requirements are placed on the machining accuracy, surface quality, and die life of ultra-fine holes.

[0003] However, in the prior art, for example, Chinese publication number CN217512658U, a fine hole stamping die includes, from top to bottom: an upper die base, an upper pad, an upper clamping plate, a stop plate, a stripper plate, a lower die template, a lower pad, and a lower die base; a fine hole module processing mechanism is provided between the upper die base and the lower die base; the beneficial effects of this utility model are that the fine holes are concentrated in a certain area and processed in a modular manner, the module group is used by the upper die alone with elasticity, which reduces the interference of the whole die, adopts independent positioning, has better stamping quality, higher stamping accuracy, longer service life of vulnerable parts, and is more convenient to disassemble and assemble.

[0004] However, during use, it was found that the positioning pin and guide post system primarily focuses on vertical positioning of the module, lacking effective horizontal constraint. Furthermore, during stamping, eccentric loads on the punch and lower die edge, or uneven deformation of the workpiece under stress, easily lead to lateral displacement of the die. This lateral displacement directly affects the machining accuracy of fine holes, causing hole position deviations, increased hole wall roughness, and even hole shape distortion, severely impacting the product's assembly performance and functionality. In addition, lateral displacement of the die exacerbates wear on the punch and lower die edge. Continuous stamping with the punch in a deflected state leads to excessive localized stress, accelerating edge wear and breakage, significantly shortening the die's lifespan, and increasing production costs and downtime for maintenance. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art that the processing is not stable enough, and that lateral displacement is easily generated, which affects the punching effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a fine hole punching die, comprising: a worktable and a workpiece; a lifting assembly, fixedly installed at the four bottom corners of the worktable; a fixing assembly, movably disposed above the worktable, which can clamp the workpiece therein, and its upper end is provided with a limit assembly; wherein, a set of guide grooves is opened at the upper end of the worktable, and the fixing assembly is movably disposed therein.

[0007] The technical effect of adopting the above-mentioned further solution is that the height can be adjusted by the lifting components at the four corners of the bottom of the worktable, and the upper fixed component can clamp the workpiece in conjunction with the limiting component. Moreover, the fixed component moves in the guide groove of the worktable, which can realize the precise positioning and stable clamping of the workpiece, providing reliable support and guidance for ultra-fine hole punching operations, and ensuring processing accuracy and stability.

[0008] In a preferred embodiment, the fixing component includes: a lower clamping block, movably mounted on the worktable; two connecting arms, fixedly connected to the left and right ends of the lower clamping block, with a longitudinally extending movable groove in the middle; an upper clamping block, mounted on the upper end of the lower clamping block, with fixing blocks fixedly connected to both ends, and one side of the fixing block penetrating through the fixing block; and a limiting stud, movably mounted on one end of the fixing block, with a handwheel threadedly engaged at its upper end to adjust the relative distance between the upper and lower clamping blocks; wherein the opposing surfaces of the lower and upper clamping blocks form a V-shape.

[0009] The technical effect of adopting the above-mentioned further solution is that the lower clamping block can move on the worktable, the two connecting arms have movable grooves, the fixed blocks at both ends of the upper clamping block pass into the movable grooves, and the distance between the upper and lower clamping blocks can be adjusted by the limit studs and handwheels. The V-shaped design of their opposite surfaces can tightly clamp workpieces of different sizes, ensuring stable positioning, and is suitable for precise fixing during ultra-fine hole punching.

[0010] In a preferred embodiment, the limiting component includes: a mounting hole that extends through the upper end of the upper clamping block; and a limiting cylinder that is threadedly connected to the interior of the mounting hole, with a guide hole in its middle to limit the left and right swing of the drill bit.

[0011] The technical effect of adopting the above-mentioned further solution is that the mounting hole through the upper end of the upper clamping block is connected to the limiting cylinder with its guide hole, which can limit the left and right swing of the drill bit, provide precise guidance for the drill bit during stamping, reduce shaking, improve drilling accuracy, ensure the verticality and diameter accuracy of ultra-fine hole processing, and ensure the stability and reliability of stamping operation.

[0012] In a preferred embodiment, the fixing component further includes a locking block, which is fixedly connected to one side of the connecting arm and engaged in the guide groove.

[0013] The technical effect of adopting the above-mentioned further solution is that the fixed component is engaged in the guide groove of the worktable by the locking block on one side of the connecting arm, which can realize the stable sliding and positioning of the fixed component in the guide groove.

[0014] In a preferred embodiment, the lifting assembly includes: four fixed screws disposed at the four corners of the bottom of the worktable; a movable sleeve movably fitted around the outside of the fixed screws; and a connecting block, one end of which is fixedly connected to the connecting block and the other end of which is rotatably connected to the bottom of the worktable.

[0015] The technical effect of adopting the above-mentioned further solution is that, through the fixing screws at the four corners of the bottom of the worktable, in conjunction with the external movable sleeve and the connecting block that is rotatably connected to the bottom of the worktable, the height and level of the worktable can be adjusted to adapt to different stamping requirements, ensure that the mold is installed stably, provide a stable working platform for ultra-fine hole stamping, and improve processing accuracy and safety.

[0016] In a preferred embodiment, the upper end of the card block is provided with multiple sets of limiting holes, and the upper end of the worktable is provided with a through hole with the same diameter as the limiting holes; wherein, a limiting pin is movably provided in the limiting hole to limit the relative displacement between the fixing component and the worktable.

[0017] The technical effect of adopting the above-mentioned further solution is that the multiple sets of limiting holes at the upper end of the card block have the same diameter as the through holes on the worktable. After the limiting pin is inserted, the displacement of the fixed component in the guide groove can be restricted, thereby achieving precise positioning.

[0018] In a preferred embodiment, the fixing component further includes: an elastic anti-slip pad disposed on the opposite surfaces of the lower clamping block and the upper clamping block.

[0019] The technical effect of adopting the above-mentioned further solution is that: the fixing component is provided with elastic anti-slip pads on the opposite surfaces of the lower clamping block and the upper clamping block, which use elastic deformation to tightly fit the workpiece surface, increase friction to prevent slippage, and at the same time buffer the stamping vibration to avoid workpiece damage. It can be adapted to workpieces with different surfaces, improve clamping stability and reliability, and ensure the accuracy of ultra-fine hole stamping.

[0020] In a preferred embodiment, a scale is provided on the upper end of the workbench.

[0021] The technical effect of adopting the above-mentioned further solution is that the scale on the workbench can help the operator accurately position the workpiece, facilitate the quick determination of the coordinates of the punching hole, reduce measurement errors, and improve the positional accuracy of ultra-fine hole processing.

[0022] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0023] 1. This utility model utilizes a locking structure formed by the locking block of the fixing component and the guide groove of the worktable to provide a stable horizontal movement track for the fixing component, limiting its lateral displacement during the stamping process. When the limiting hole on the locking block aligns with the through hole of the worktable, inserting the limiting pin securely locks the fixing component onto the worktable, further enhancing horizontal stability and effectively resisting lateral forces generated by eccentric loads and uneven material deformation. Furthermore, the limiting cylinder in the limiting component directly restricts the left and right swing of the drill bit through the guide hole, ensuring the drill bit maintains a precise movement trajectory during processing. The synergistic effect of multiple structures controls the processing error of ultra-fine holes to a minimal range, significantly improving hole position accuracy, reducing hole wall roughness, avoiding hole shape distortion, and ensuring the assembly performance and functionality of the product.

[0024] 2. The fixing component in this utility model involves a lower clamping block and an upper clamping block with opposite faces in a V shape, combined with an elastic anti-slip pad, which not only enhances the clamping force on the workpiece, but also better disperses the pressure during stamping and reduces the lateral force on the mold caused by the workpiece sliding. Attached Figure Description

[0025] Figure 1 A three-dimensional structural diagram of a fine-hole punching die provided by this utility model;

[0026] Figure 2 A partially enlarged structural diagram of a fine-hole punching die provided by this utility model;

[0027] Figure 3 An enlarged structural diagram of the fixing component of a fine-hole punching die provided by this utility model;

[0028] Figure 4 This is an enlarged structural diagram of the lifting component of a fine-hole stamping die provided by this utility model.

[0029] Legend:

[0030] 1. Worktable; 2. Workpiece; 3. Lifting assembly; 301. Fixed screw; 302. Movable sleeve; 303. Connecting block; 4. Fixed assembly; 401. Lower clamping block; 402. Upper clamping block; 403. Fixed block; 404. Limiting stud; 405. Handwheel; 406. Clamping block; 407. Mounting hole; 408. Limiting sleeve; 409. Guide hole; 410. Movable groove; 411. Elastic anti-slip pad; 412. Connecting arm; 5. Guide groove; 6. Scale; 7. Limiting hole; 8. Through hole; 9. Limiting pin. Detailed Implementation

[0031] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1-4 This utility model provides a technical solution: a fine hole punching die, characterized in that it includes a worktable 1, a workpiece 2, a lifting component 3 and a fixing component 4;

[0033] Four lifting components 3 are securely installed at the four corners of the bottom of the worktable 1, enabling flexible adjustment of the height of the worktable 1;

[0034] The fixing component 4 is movably arranged above the worktable 1 to securely fix the workpiece 2 on the worktable 1, and the top of the fixing component 4 is provided with a limiting component for restricting the movement of the drill bit.

[0035] A set of guide grooves 5 are provided on the upper surface of the worktable 1. The bottom of the fixing component 4 cooperates with the guide grooves 5 and can move flexibly within the guide grooves 5, thereby achieving precise adjustment of the position of the workpiece 2.

[0036] like Figure 1-4 As shown, the fixing component 4 consists of a lower clamping block 401, two connecting arms 412, an upper clamping block 402, a limiting stud 404, a locking block 406, and an elastic anti-slip pad 411.

[0037] The lower clamping block 401 can slide horizontally on the worktable 1 by cooperating with the guide groove 5 of the worktable 1;

[0038] Two connecting arms 412 are symmetrically fixed on the left and right sides of the connecting arm 412, and the longitudinally opened movable slots 410 inside provide space for the installation and movement of subsequent components;

[0039] The upper clamping block 402 is located above the lower clamping block 401. The fixed blocks 403 at both ends pass through the movable groove 410, and the limiting studs 404 pass through the fixed blocks 403. Their top ends are tightly connected to the handwheel 405 by threads. By rotating the handwheel 405, the distance between the upper clamping block 402 and the lower clamping block 401 can be precisely adjusted, thereby achieving a firm clamping of the workpiece 2.

[0040] The locking block 406 is fixed on one side of the connecting arm 412 and forms a locking structure with the guide groove 5 of the worktable 1 to ensure the stability and accuracy of the fixing component 4 when it moves on the worktable 1.

[0041] The elastic anti-slip pads 411 on the opposing surfaces of the lower clamping block 401 and the upper clamping block 402 can increase the friction between the workpiece 2 and further enhance the clamping firmness, preventing the workpiece 2 from shifting during processing.

[0042] The lower clamping block 401 and the upper clamping block 402 have a V-shaped relative surface, which can stably clamp the workpiece 2 and provide clamping force at multiple angles.

[0043] In the limiting assembly, the mounting hole 407 is opened through the upper end of the upper clamping block 402, and the limiting cylinder 408 is screwed into the mounting hole 407 by thread. The guide hole 409 in the middle can effectively limit the left and right swing of the drill bit during the processing, improve the drilling accuracy and stability. Different drilling needs can be met by replacing the limiting cylinder 408 with guide holes 409 of different diameters.

[0044] like Figure 1-4 As shown, the lifting assembly 3 includes four fixed screws 301, a movable sleeve 302, and a connecting block 303;

[0045] Four fixed screws 301 are vertically fixed at the four corners of the bottom of the workbench 1, and the movable sleeve 302 is sleeved on the outside of the fixed screws 301, and can slide along the upper and lower threads of the fixed screws 301.

[0046] One end of the connecting block 303 is fixedly connected to the movable sleeve 302, and the other end is connected to the bottom of the worktable 1 through a rotating structure. By adjusting the position of the movable sleeve 302 on the fixed screw 301, the height of the worktable 1 can be adjusted to meet different processing requirements.

[0047] like Figure 1-4 As shown, a scale 6 is provided on the upper end of the workbench 1, which provides a precise reference for the positioning of the workpiece 2 and the adjustment of the fixing component 4, making it convenient for operators to quickly and accurately determine the processing position.

[0048] After the limiting hole 7 at the upper end of the card block 406 is aligned with the through hole 8 at the upper end of the worktable 1, the limiting pin 9 is inserted to firmly fix the fixing component 4 on the worktable 1, preventing it from moving accidentally during the processing.

[0049] Working principle: This equipment is a fine hole punching die. When in use, first fix the four fixed screws 301 at the four corners of the bottom of the worktable 1, then put the movable sleeve 302 on the outside of the fixed screws 301, and connect the movable sleeve 302 to the bottom of the worktable 1 through the connecting block 303. According to the processing requirements, adjust the position of the movable sleeve 302 on the fixed screws 301 to complete the adjustment of the height of the worktable 1.

[0050] Next, place workpiece 2, place the lower clamping block 401 on the worktable 1, and insert the locking block 406 on the side of the connecting arm 412 into the guide groove 5 of the worktable 1. Place workpiece 2 on the lower clamping block 401. Then, turn the handwheel 405 to drive the limit stud 404, so that the fixing blocks 403 at both ends of the upper clamping block 402 move in the movable groove 410 of the connecting arm 412, thereby adjusting the distance between the upper clamping block 402 and the lower clamping block 401. Use the elastic anti-slip pads 411 on their opposing surfaces to firmly clamp workpiece 2.

[0051] Then, position the fixing component 4 by aligning the limiting hole 7 at the upper end of the locking block 406 with the through hole 8 on the worktable 1, and inserting the limiting pin 9 to limit the relative displacement between the fixing component 4 and the worktable 1. At the same time, refer to the scale 6 at the upper end of the worktable 1 to ensure that the workpiece 2 is in a suitable processing position.

[0052] Finally, install the limiting assembly. Screw the limiting cylinder 408 into the mounting hole 407 at the upper end of the upper clamping block 402. The guide hole 409 in the middle of the limiting cylinder 408 restricts the left and right swing of the drill bit. Different drilling requirements can be met by replacing the limiting cylinder 408 with one that has a guide hole 409 of a different diameter. After completing the above operations, the stamping equipment can be started to perform the stamping process for ultra-fine holes. During the processing, all components cooperate to ensure the accuracy and stability of the drilling.

[0053] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A fine-hole punching die, comprising: The worktable (1) and the workpiece (2) are characterized in that, The lifting assembly (3) is fixedly installed at the four bottom corners of the workbench (1); The fixed component (4) is movably set above the worktable (1) and can clamp the workpiece (2) therein, and a limit component is provided at its upper end; The upper end of the workbench (1) is provided with a set of guide grooves (5), and the fixing component (4) is movably disposed therein.

2. The ultra-fine hole punching die according to claim 1, characterized in that, The fixing component (4) includes: The lower clamping block (401) is movably mounted on the worktable (1); Two connecting arms (412) are provided and are fixedly connected to the left and right ends of the lower clamping block (401), and a movable groove (410) is longitudinally opened in the middle of the arm. The upper clamping block (402) is located at the upper end of the lower clamping block (401), and fixed blocks (403) are fixedly connected to both ends of the upper clamping block (402), with one side of the fixed block (403) penetrating into the fixed block (403). The limiting stud (404) is movably set at one end of the fixed block (403), and a handwheel (405) is provided at its upper end through thread engagement, which can adjust the relative distance between the upper clamping block (402) and the lower clamping block (401); The lower clamping block (401) and the upper clamping block (402) have a V-shaped opposite surface.

3. The ultra-fine hole punching die according to claim 1, characterized in that, The limiting component includes: Mounting hole (407) is provided at the upper end of upper clamping block (402); The limiting sleeve (408) is connected to the interior of the mounting hole (407) by a threaded connection, and a guide hole (409) is provided in the middle of the sleeve to limit the left and right swing of the drill bit.

4. The ultra-fine hole punching die according to claim 2, characterized in that, The fixing component (4) also includes: The locking block (406) is fixedly connected to one side of the connecting arm (412) and is engaged in the guide groove (5).

5. The ultra-fine hole punching die according to claim 1, characterized in that, The lifting assembly (3) includes: There are four fixing screws (301) located at the four bottom corners of the workbench (1); The movable sleeve (302) is movably sleeved on the outside of the fixed screw (301); One end of the connecting block (303) is fixedly connected to the connecting block (303), and the other end is rotatably connected to the bottom of the workbench (1).

6. The ultra-fine hole punching die according to claim 4, characterized in that: The upper end of the card block (406) is provided with multiple sets of limiting holes (7), and the upper end of the worktable (1) is provided with a through hole (8) with the same size and diameter as the limiting holes (7). The limiting hole (7) is movably provided with a limiting pin (9) to limit the relative displacement between the fixed component (4) and the worktable (1).

7. The ultra-fine hole punching die according to claim 2, characterized in that, The fixing component (4) also includes: An elastic anti-slip pad (411) is disposed on the opposite surfaces of the lower clamping block (401) and the upper clamping block (402).

8. The ultra-fine hole punching die according to claim 1, characterized in that: A scale (6) is provided on the upper end of the workbench (1).

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