Punching machine for precision fitting production

Abstract

The utility model discloses a kind of stamping machines for precision fittings production, specifically related to stamping machine field, including installation base, the upper end surface of the installation base is equipped with placing groove, stamping groove is equipped on the inner bottom wall of the placing groove, the both sides of the installation base are respectively equipped with limiting device, the upper end surface of the installation base is fixedly installed with multiple fixed columns symmetrically, the upper end surface of multiple fixed columns is fixedly installed with mounting plate jointly.The elastic clamping force of the first spring of limiting device can center the positioning of fittings, ensure that the center of fittings is accurately aligned with stamping groove, stamping block, avoid horizontal direction deviation, before pre-pressing device contacts fittings with stamping block, by the elastic force of pre-pressing plate and second spring of rubber material, firmly fix fittings in placing groove, prevent fittings from being warped or displaced in stamping moment, effectively avoid the deviation problem of fittings in stamping process, improve machining precision.

Description

Technical Field

[0001] This utility model relates to the field of stamping machines, and more specifically, to a stamping machine for the production of precision parts. Background Technology

[0002] With the rapid development of high-end manufacturing fields such as electronics, automobiles, and aerospace, the market demand for precision parts is increasing. These parts not only require dimensional accuracy to be controlled within the micron range, but also need to ensure that the surface is free of scratches, indentations, and other damage in order to meet the performance requirements of subsequent assembly and use. As the core process for forming precision parts, the performance of the equipment directly determines the quality and efficiency of parts production.

[0003] In traditional precision parts stamping, due to the lack of a stable positioning and fixing mechanism, parts are prone to two types of offset problems: First, it is difficult to accurately align with the stamping center when placed, resulting in horizontal positional deviation; second, the parts are prone to tilting or sliding laterally due to the instantaneous stamping force, ultimately causing the dimensional tolerances of the formed parts to be out of tolerance and unable to meet the requirements of precision production.

[0004] Therefore, it is necessary to redesign a stamping machine for the production of precision parts to address the above-mentioned problems. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a stamping machine for the production of precision parts.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A stamping machine for producing precision parts includes a mounting base. The upper surface of the mounting base has a placement groove, and the inner bottom wall of the placement groove has a stamping groove. Limiting devices are provided on both sides of the mounting base. Multiple fixing columns are symmetrically fixedly mounted on the upper surface of the mounting base. A mounting plate is fixedly mounted on the upper surface of the multiple fixing columns. A hydraulic telescopic cylinder is fixedly mounted on the upper surface of the mounting plate. The output shaft of the hydraulic telescopic cylinder slides through the upper surface of the mounting plate and extends downward to mount a connecting plate. A stamping block is fixedly mounted at the bottom end of the connecting plate. Two pre-pressing devices are symmetrically provided on the upper surface of the connecting plate, and the output ends of the two pre-pressing devices respectively penetrate the upper surface of the connecting plate and extend downward.

[0007] In a preferred embodiment, each of the limiting devices includes two first springs, which are symmetrically fixedly installed on one side of the mounting base. A fixing block is fixedly installed on one end of each of the two first springs. A fixing rod is fixedly installed on one side of each fixing block. The two first springs are respectively sleeved on the outer wall of the two fixing rods. One end of each of the two fixing rods slides through one side of the mounting base and is jointly fixedly installed with a limiting plate.

[0008] In a preferred embodiment, each of the pre-compression devices includes two second springs, which are symmetrically fixedly installed on the upper end face of the connecting plate. A connecting block is fixedly installed on one end of each of the two second springs, and an installation rod is fixedly installed on the bottom end of each of the two connecting blocks. The bottom ends of the two installation rods pass through the upper end face of the connecting plate and are jointly installed downwards on the pre-compression plate.

[0009] In a preferred embodiment, the bottom end of the connecting plate has two symmetrical storage slots, and the two storage slots correspond to the two pre-pressing plates respectively.

[0010] In a preferred embodiment, each of the preload plates is made of rubber.

[0011] In a preferred embodiment, the surface of each of the limiting plates is smoothly disposed.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model incorporates a pre-pressing device and a limiting device. The elastic clamping force of the first spring in the limiting device can center and position the part, ensuring that the center of the part is precisely aligned with the stamping groove and the stamping block, thus preventing horizontal offset. Before the stamping block contacts the part, the pre-pressing device uses a rubber pre-pressing plate and the elastic force of the second spring to firmly fix the part in the placement groove, preventing the part from tilting or shifting during stamping. This effectively avoids the offset problem of the part during the stamping process and improves processing accuracy. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a stamping machine for producing precision parts according to the present invention; Figure 2 This is a schematic diagram of the mounting base of a stamping machine for precision parts production according to this utility model; Figure 3 This is a schematic diagram of the mounting plate portion of a stamping machine for precision parts production according to the present invention; Figure 4 This is a schematic diagram of the pre-pressing device of a stamping machine for producing precision parts according to the present invention.

[0014] In the diagram: 1. Mounting base; 2. Fixing column; 3. Mounting plate; 4. Hydraulic telescopic cylinder; 5. Placement slot; 6. Stamping slot; 7. Fixing block; 8. First spring; 9. Fixing rod; 10. Limiting plate; 11. Connecting plate; 12. Stamping block; 13. Pre-pressing plate; 14. Second spring; 15. Mounting rod; 16. Connecting block; 17. Storage slot. Detailed Implementation

[0015] 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.

[0016] Reference Figure 1-4 A stamping machine for producing precision parts includes a mounting base 1. The upper end face of the mounting base 1 has a placement groove 5, and the inner bottom wall of the placement groove 5 has a stamping groove 6. Limiting devices are provided on both sides of the mounting base 1. Multiple fixing columns 2 are symmetrically fixedly installed on the upper end face of the mounting base 1. The upper end face of the multiple fixing columns 2 is jointly fixedly installed on a mounting plate 3. A hydraulic telescopic cylinder 4 is fixedly installed on the upper end face of the mounting plate 3. The output shaft of the hydraulic telescopic cylinder 4 slides through the upper end face of the mounting plate 3 and extends downward to install a connecting plate 11. A stamping block 12 is fixedly installed at the bottom end of the connecting plate 11. Two pre-pressing devices are symmetrically provided on the upper end face of the connecting plate 11, and the output ends of the two pre-pressing devices respectively pass through the upper end face of the connecting plate 11 and extend downward.

[0017] Each limiting device includes two first springs 8, which are symmetrically fixedly installed on one side of the mounting base 1. A fixing block 7 is fixedly installed on one end of each of the two first springs 8. A fixing rod 9 is fixedly installed on one side of each fixing block 7. The two first springs 8 are respectively sleeved on the outer wall of the two fixing rods 9. One end of each fixing rod 9 slides through one side of the mounting base 1 and is fixedly installed together with a limiting plate 10. The first springs 8 are symmetrically sleeved on the outer wall of the fixing rods 9. In the initial state, they can maintain the preset position of the limiting plate 10. When the part is placed into the placement slot 5 and squeezes the limiting plate 10, the first springs 8 can generate a uniform reverse elastic force through compression. The magnitude of the elastic force is adaptively adjusted according to the size of the part. It can apply a moderate clamping force to small-sized parts to avoid displacement caused by excessive clamping, and provide sufficient elastic space for large-sized parts to prevent damage to the parts due to excessive clamping. At the same time, the elastic reset characteristic of the first springs 8 can quickly drive the limiting plate 10 back to the initial position after the part is removed, without the need for manual adjustment, thus improving the efficiency of equipment cycle processing.

[0018] Each pre-pressing device includes two second springs 14, which are symmetrically fixedly installed on the upper surface of the connecting plate 11. A connecting block 16 is fixedly installed on one end of each of the two second springs 14, and a mounting rod 15 is fixedly installed on the bottom end of each of the two connecting blocks 16. The bottom ends of the two mounting rods 15 pass through the upper surface of the connecting plate 11 and are installed downwards together on the pre-pressing plate 13. The second springs 14 are symmetrically installed on the upper surface of the connecting plate 11. When the pre-pressing plate 13 contacts the part and is subjected to a reaction force, the second springs 14 generate a continuous and uniform pre-pressure through compression, ensuring that the pre-pressing plate 13 is always tightly attached to the upper surface of the part (even if there are slight unevennesses on the surface of the part), and avoiding the part from warping during stamping due to insufficient pre-pressure. At the same time, the elastic characteristics of the second springs 14 can also buffer the longitudinal impact force generated by the stamping block 12 during stamping, reduce the instantaneous impact force on the part, and reduce the risk of part cracking.

[0019] Two storage slots 17 are symmetrically opened at the bottom of the connecting plate 11, and the two storage slots 17 correspond to the two pre-pressing plates 13 respectively. Under the continuous output of the hydraulic telescopic cylinder 4, the pre-pressing plate 13 can be stored in the storage slot 17 to avoid affecting the stamping of the stamping block 12.

[0020] Each preload plate 13 is made of rubber. Rubber has good softness and elasticity. On the one hand, it can tightly fit the upper surface of the part through elastic deformation during preload, increasing the contact area with the part, enhancing friction, and effectively preventing the part from sliding laterally or lifting vertically during stamping, thus ensuring subsequent precise stamping. On the other hand, the rubber material can buffer the preload transmitted by the second spring 14, avoiding damage such as indentations and deformation on the surface of the part caused by rigid extrusion. It is especially suitable for precision parts with softer materials or easily damaged surfaces. In addition, the rubber material also has a certain degree of wear resistance, which can extend the service life of the preload plate 13 and reduce equipment maintenance costs.

[0021] Each limiting plate 10 has a smooth surface. The smooth surface design of the limiting plate 10 can greatly reduce the frictional resistance with the side of the accessory, and avoid surface damage such as scratches and wear on the side of the accessory during the clamping process. It is especially suitable for precision accessories with high surface precision requirements.

[0022] When using this utility model, the precision parts to be stamped are placed in the placement groove 5 of the mounting base 1. The placement groove 5 plays a preliminary role in limiting the position of the parts, so that they are roughly within the preset range of the stamping process.

[0023] The limiting devices on both sides of the mounting base 1 begin to operate. After the part is placed in the placement slot 5, both sides of the part will contact and be compressed against the limiting plates 10. After being compressed, the limiting plates 10 push the fixing blocks 7 to compress the first spring 8 through the fixing rod 9. Due to the elastic force of the first spring 8, the reaction force is transmitted to the limiting plates 10 through the fixing rod 9, so that the limiting plates 10 on both sides are tightly fitted to the sides of the part, thereby stably clamping the part. Furthermore, because the surface of the limiting plates 10 is smooth, it can reduce frictional damage to the surface of the part, ensuring that the part will not shift horizontally during subsequent stamping.

[0024] The hydraulic telescopic cylinder 4 is activated, and its output shaft extends downward, driving the connecting plate 11, the stamping block 12 mounted on the connecting plate 11, and the pre-pressing device to move downward as a whole. During the downward movement, since the initial position of the pre-pressing plate 13 is lower than that of the stamping block 12, the pre-pressing plate 13 will first contact the upper end face of the accessory. As the connecting plate 11 continues to move downward, the pre-pressing plate 13 is subjected to the reaction force of the accessory, which pushes the connecting block 16 to compress the second spring 14 through the mounting rod 15. Under the elastic force of the second spring 14, the pre-pressing plate 13 will press tightly against the upper end face of the accessory, further fixing the accessory in the placement groove 5. The pre-pressing plate 13 is made of rubber, which can both enhance the friction between it and the accessory and prevent damage to the surface of the accessory.

[0025] After the pre-compression device completes the pre-compression and fixing of the parts, the connecting plate 11 continues to move downward under the drive of the hydraulic telescopic cylinder 4. At this time, the stamping block 12 moves downward and contacts the parts. The hydraulic telescopic cylinder 4 continuously provides power, driving the stamping block 12 to perform stamping processing on the parts. Under the action of the stamping force, the parts complete the corresponding forming or processing in the stamping groove 6.

[0026] After the stamping process is completed, the output shaft of the hydraulic telescopic cylinder 4 retracts upward, causing the connecting plate 11, the stamping block 12, and the pre-pressing device to move upward as a whole. The second spring 14 in the pre-pressing device returns to its natural state, pushing the connecting block 16, the mounting rod 15, and the pre-pressing plate 13 downward, causing the pre-pressing plate 13 to detach from the part. At the same time, the operator removes the processed part from the placement slot 5, the limiting plate 10 loses the compressive force of the part, the first spring 8 returns to its natural state, and pushes the fixing block 7, the fixing rod 9, and the limiting plate 10 back to their initial positions, waiting for the next stamping cycle.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stamping machine for producing precision parts, comprising a mounting base (1), characterized in that: The mounting base (1) has a placement groove (5) on its upper surface and a stamping groove (6) on the inner bottom wall of the placement groove (5). The mounting base (1) has limiting devices on both sides. The mounting base (1) has multiple fixing columns (2) symmetrically fixedly installed on its upper surface. The upper surfaces of the multiple fixing columns (2) are fixedly installed on a mounting plate (3). The upper surface of the mounting plate (3) is fixedly installed with a hydraulic telescopic cylinder (4). The output shaft of the hydraulic telescopic cylinder (4) slides through the upper surface of the mounting plate (3) and extends downward to install a connecting plate (11). The bottom end of the connecting plate (11) is fixedly installed with a stamping block (12). The upper surface of the connecting plate (11) is symmetrically provided with two pre-pressing devices, and the output ends of the two pre-pressing devices respectively penetrate the upper surface of the connecting plate (11) and extend downward.

2. The stamping machine for precision parts production according to claim 1, characterized in that: Each of the limiting devices includes two first springs (8), and the two first springs (8) are symmetrically fixedly installed on one side of the mounting base (1). A fixing block (7) is fixedly installed on one end of each of the two first springs (8). A fixing rod (9) is fixedly installed on one side of each fixing block (7). The two first springs (8) are respectively sleeved on the outer wall of the two fixing rods (9). One end of each of the two fixing rods (9) slides through one side of the mounting base (1) and is fixedly installed together with a limiting plate (10).

3. The stamping machine for precision parts production according to claim 1, characterized in that: Each of the pre-compression devices includes two second springs (14), and the two second springs (14) are symmetrically fixedly installed on the upper end face of the connecting plate (11). A connecting block (16) is fixedly installed on one end of each of the two second springs (14), and an installation rod (15) is fixedly installed on the bottom end of each of the two connecting blocks (16). The bottom ends of the two installation rods (15) pass through the upper end face of the connecting plate (11) and are installed downward together on the pre-compression plate (13).

4. A stamping machine for precision parts production according to claim 3, characterized in that: The bottom end of the connecting plate (11) has two symmetrical storage slots (17), and the two storage slots (17) correspond to the two pre-pressing plates (13) respectively.

5. A stamping machine for precision parts production according to claim 3, characterized in that: Each of the preload plates (13) is made of rubber.

6. A stamping machine for precision parts production according to claim 2, characterized in that: The surface of each of the limiting plates (10) is smoothly disposed.

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