A stamping and drilling device for manufacturing automotive parts

Abstract

This application relates to the field of punching equipment technology and discloses a punching and drilling device for manufacturing automotive parts. The device includes a drive shaft, with a punch fixedly attached to the bottom of the drive shaft's inner cavity via a pin. A set of linkage components is provided on both sides of the drive shaft's outer surface. Each linkage component includes a frame fixedly mounted on the bottom of the drive shaft's outer surface. A linkage rod is provided on one side of the frame's bottom end, and an elastic element is provided in the middle of the linkage rod's outer surface. The linkage rod is connected to the frame via the elastic element. The punching and drilling device for manufacturing automotive parts provided in this application allows for the determination of the punching part's thickness using the time point when the first and second sensing rings generate relative displacement. Based on the arrival of the time point, lower dies of different inner diameters are moved to a position directly below the punch, resulting in better quality, accuracy, and efficiency in punching the punched parts.

Description

Technical Field

[0001] This application relates to the field of punching equipment technology, and in particular to a punching and drilling device for the production of automotive parts. Background Technology

[0002] In modern industrial production, punching is one of the important forms of hole processing. Compared with drilling, punching can process various hole shapes on different materials to meet different application needs, and the processing efficiency is higher. Especially in the field of machining, punching greatly improves the production and processing efficiency of parts by enterprises.

[0003] During the punching process, the gap between the upper and lower dies has a significant impact on the quality of hole forming. Too large or too small a gap will have an adverse effect on the punched part. If the gap is too large, the punched part will produce large burrs and reduce dimensional accuracy; if the gap is too small, the dimensions of the punched part will change due to the elastic recovery of the material, which will lead to instability in dimensional accuracy.

[0004] The gap between the upper and lower dies is generally determined based on the thickness of the punched part. However, in the existing punching process, the adjustment of the gap between the upper and lower dies is greatly affected by human factors. The selection and adjustment accuracy of the gap size is low, which seriously affects the punching quality of the punched part. Furthermore, multiple adjustments are required before mass production, which is inefficient and easily leads to material waste, as well as poor stability and reliability.

[0005] Therefore, there is an urgent need for a punching and forming equipment to solve the defects of the existing punching and forming equipment in actual use. Summary of the Invention

[0006] This application proposes a stamping and drilling device for manufacturing automotive parts. It features a lower die that can automatically select and adapt the gap size according to the thickness of the stamped part, resulting in better quality, accuracy, and efficiency in punching the part. This addresses the problems in existing punching processes, where the adjustment of the gap between the upper and lower dies is greatly affected by human factors, leading to low accuracy in selecting and adjusting the gap size. This severely impacts the punching quality of the part and results in low efficiency and material waste due to the need for multiple adjustments before mass production.

[0007] To achieve the above objectives, this application adopts the following technical solution: a stamping and drilling device for manufacturing automotive parts, comprising a drive shaft fixedly mounted on a hydraulic power device at the top and a lower die assembly for carrying the stamped part fixedly mounted on an operating table by bolts. A punch is fixedly engaged at the bottom of the inner cavity of the drive shaft by a pin, thereby allowing the hydraulic power device to drive the drive shaft and the punch on it to move up and down, and to perform punching operations on the stamped part located on the lower die assembly. A set of linkage components is provided on both sides of the outer surface of the drive shaft. The linkage component includes a frame fixedly mounted on the bottom of the outer surface of the drive shaft. A linkage rod is provided on one side of the bottom end of the frame, and an elastic element is provided in the middle of the outer surface of the linkage rod. The linkage rod is connected to the frame through the elastic element. Initially, under the elastic force of the elastic element, the linkage rod is positioned slightly upward. A feedback rod for detecting and providing feedback on the thickness of the stamped part is fixedly mounted at the top of the linkage rod.

[0008] Furthermore, the lower mold assembly includes a bracket fixedly mounted on the operating table, and a slider is movably connected to the top of the bracket. The slider has several sets of lower molds with different inner diameters inside. The slider is connected to a drive mechanism fixedly mounted on one side of the end of the bracket. The drive mechanism can drive the slider to move linearly along the trajectory of the bracket. The drive mechanism and the feedback rod are connected by a feedback electrical connection through a control system, and the displacement of the slider driven by the drive mechanism is determined by the feedback of the feedback rod.

[0009] Furthermore, a first sensing ring is fixedly sleeved on the top of the outer surface of the feedback rod, and the first sensing ring is in contact with a second sensing ring fixedly sleeved in the inner wall of the frame. Feedback is provided at the time node when the first sensing ring and the second sensing ring undergo relative displacement, and the drive mechanism is triggered to drive the slider to move linearly. However, the drive mechanism is not triggered again when a relative displacement occurs subsequently.

[0010] Furthermore, the lower die is bolted to the inside of the slider, allowing for flexible replacement of different specifications of lower dies according to actual usage. The inner diameter of the lower die gradually increases from left to right, and initially, the leftmost lower die is located directly below the punch.

[0011] Furthermore, the speed at which the drive shaft drives the punch and linkage assembly to move downward is fixed, and the thickness of the punched part is determined based on the time point at which the first sensing ring and the second sensing ring generate relative displacement, thereby controlling the drive mechanism to drive the slider to generate different degrees of linear displacement:

[0012] The earlier the time point arrives, the greater the thickness of the stamped part, which in turn forces the drive mechanism to move the slider to the left to generate a large displacement, so as to move the lower die with a larger inner diameter directly below the punch.

[0013] The later the time point arrives, the smaller the thickness of the stamped part, which forces the drive mechanism to move the slider to the left by a small amount of displacement to move the lower die with a smaller inner diameter directly below the punch.

[0014] Furthermore, a pressure block made of rubber is fixedly installed at the bottom end of the linkage rod, and when the linkage rod moves downward with the transmission shaft, the pressure block contacts the outer surface of the punching part to prevent the linkage rod from causing scratch damage to the surface of the punching part during the process of pressing the punching part.

[0015] Furthermore, initially, the height of the bottom end of the punch is higher than the height of the bottom end of the pressure block, thereby ensuring that during the process of the drive shaft driving the punch and the linkage assembly to move downward, the bottom end of the pressure block first contacts the surface of the punched part, and causes a relative displacement between the first sensing ring and the second sensing ring.

[0016] The beneficial effects of this invention are as follows:

[0017] This application provides a stamping and drilling device for manufacturing automotive parts. In terms of the linkage component, the thickness of the stamped part can be determined by the time node when the first sensing ring and the second sensing ring generate relative displacement. According to the arrival of the time node, the lower die with different inner diameters is moved to the position directly below the punch. Then, the appropriate punching gap can be automatically selected according to the thickness of the stamped part, so that the punching equipment has good quality, accuracy and efficiency in punching the stamped part. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a front view of the structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the linkage component of the present invention;

[0022] Figure 4 The structure of this invention Figure 1 Enlarged diagram of point A in the diagram;

[0023] Figure 5 This is a schematic diagram of the lower mold assembly of the present invention.

[0024] In the figure: 1-drive shaft, 2-punch, 3-lower die assembly, 4-punching part, 5-linkage assembly, 6-frame, 7-linkage rod, 8-elastic element, 9-feedback rod, 10-pressure block, 11-first sensing ring, 12-second sensing ring, 13-bracket, 14-slider, 15-lower die, 16-drive mechanism. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figure 1 , Figure 2 As shown, a stamping and drilling device for manufacturing automotive parts includes a drive shaft 1 fixedly mounted on a hydraulic power unit at the top and a lower die assembly 3 fixedly mounted on an operating table by bolts to support a punching part 4. A punch 2 is fixedly engaged with the bottom of the inner cavity of the drive shaft 1 by a pin. The hydraulic power unit can then drive the drive shaft 1 and the punch 2 to move up and down, performing a punching operation on the punching part 4 located on the lower die assembly 3. A set of linkage components 5 are respectively provided on both sides of the outer surface of the drive shaft 1, such as... Figure 3 As shown, the linkage assembly 5 includes a frame 6 fixedly installed on the bottom of the outer surface of the drive shaft 1. A linkage rod 7 is provided on one side of the bottom end of the frame 6, and an elastic element 8 is provided in the middle of the outer surface of the linkage rod 7. The linkage rod 7 is connected to the frame 6 through the elastic element 8. Thus, initially, under the elastic force of the elastic element 8, the linkage rod 7 is positioned slightly upward. A feedback rod 9 for detecting and providing feedback on the thickness of the punched part 4 is fixedly installed at the top of the linkage rod 7.

[0027] like Figure 5 As shown, in this technical solution, the lower mold assembly 3 includes a bracket 13 fixedly installed on the operating table, and a slider 14 is movably connected to the top of the bracket 13. The slider 14 has several sets of lower molds 15 with different inner diameters inside. The slider 14 is connected to a drive mechanism 16 fixedly installed on one side of the end of the bracket 13. The drive mechanism 16 can drive the slider 14 to move linearly along the trajectory of the bracket 13. The drive mechanism 16 and the feedback rod 9 are connected by a feedback electrical connection through the control system, and the displacement of the slider 14 driven by the drive mechanism 16 is determined by the feedback of the feedback rod 9.

[0028] like Figure 3 , Figure 4As shown, in this technical solution, a first sensing ring 11 is fixedly sleeved on the top of the outer surface of the feedback rod 9, and the first sensing ring 11 is in contact with a second sensing ring 12 fixedly sleeved in the inner wall of the frame 6. Feedback is provided at the time node when the first sensing ring 11 and the second sensing ring 12 have relative displacement, and the drive mechanism 16 is triggered to drive the slider 14 to move linearly. When a relative displacement occurs in the subsequent period, the drive mechanism 16 is no longer triggered.

[0029] like Figure 5 As shown, in this technical solution, the lower die 15 is bolted to the inside of the slider 14, so that different specifications of the lower die 15 can be flexibly replaced according to the actual use. The inner diameter of the lower die 15 gradually increases from left to right. Initially, the leftmost lower die 15 is located directly below the punch 2.

[0030] In this technical solution, the speed at which the drive shaft 1 drives the punch 2 and the linkage assembly 5 to move downward is fixed. The thickness of the punched part 4 is determined based on the time point at which the first sensing ring 11 and the second sensing ring 12 generate relative displacement, thereby controlling the drive mechanism 16 to drive the slider 14 to generate different degrees of linear displacement.

[0031] The earlier the time point arrives, the greater the thickness of the blanking part 4, which in turn forces the drive mechanism 16 to drive the slider 14 to the left to generate a large displacement so as to move the lower die 15 with a larger inner diameter directly below the punch 2.

[0032] The later the time point arrives, the smaller the thickness of the blanking part 4, which in turn forces the drive mechanism 16 to drive the slider 14 to the left to produce a small displacement so as to move the lower die 15 with a smaller inner diameter directly below the punch 2.

[0033] like Figure 3 As shown, in this technical solution, a pressure block 10 made of rubber is fixedly installed at the bottom end of the linkage rod 7. When the linkage rod 7 moves downward with the transmission shaft 1, the pressure block 10 contacts the outer surface of the punching part 4 to prevent the linkage rod 7 from causing scratch damage to the surface of the punching part 4 during the process of pressing the punching part 4.

[0034] like Figures 2-4 As shown, in this technical solution, initially, the height of the bottom end of the punch 2 is higher than the height of the bottom end of the pressure block 10, thereby ensuring that during the process of the transmission shaft 1 driving the punch 2 and the linkage assembly 5 to move downward, the bottom end of the pressure block 10 first contacts the surface of the punching part 4, and causes a relative displacement between the first sensing ring 11 and the second sensing ring 12.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stamping and drilling device for manufacturing automotive parts, comprising a drive shaft (1) and a lower die assembly (3) for carrying a stamped part (4), wherein a punch (2) is fixedly connected to the bottom of the inner cavity of the drive shaft (1) by a pin, characterized in that: A set of linkage components (5) are provided on both sides of the outer surface of the drive shaft (1). The linkage component (5) includes a frame (6) fixedly installed at the bottom of the outer surface of the drive shaft (1). A linkage rod (7) is provided on one side of the bottom end of the frame (6), and an elastic element (8) is provided in the middle of the outer surface of the linkage rod (7). The linkage rod (7) is connected to the frame (6) through the elastic element (8). A feedback rod (9) for detecting and feeding back the thickness of the punched part (4) is fixedly installed at the top of the linkage rod (7). The lower mold assembly (3) includes a bracket (13) fixedly installed on the operating table, and a slider (14) is movably connected to the top of the bracket (13). The slider (14) is provided with several sets of lower molds (15) with different inner diameters. The slider (14) is connected to a drive mechanism (16) fixedly installed on one side of the end of the bracket (13). The drive mechanism (16) and the feedback rod (9) are connected by a feedback electrical connection through the control system. The top of the outer surface of the feedback rod (9) is fixedly sleeved with a first sensing ring (11), and the first sensing ring (11) is in contact with a second sensing ring (12) fixedly sleeved in the inner wall of the frame (6). Feedback is given at the time node when the first sensing ring (11) and the second sensing ring (12) undergo relative displacement. The drive mechanism (16) is no longer triggered when a relative displacement occurs in the subsequent generation. The speed at which the drive shaft (1) drives the punch (2) and the linkage assembly (5) to move downward is determined, and the thickness of the punched part (4) is determined according to the time node when the first sensing ring (11) and the second sensing ring (12) generate relative displacement, thereby controlling the drive mechanism (16) to drive the slider (14) to generate different degrees of linear displacement.

2. The stamping and drilling apparatus for manufacturing automotive parts according to claim 1, characterized in that, The lower die (15) is bolted to the inside of the slider (14), and the inner diameter of the lower die (15) gradually increases from left to right. Initially, the leftmost lower die (15) is located directly below the punch (2).

3. The stamping and drilling apparatus for manufacturing automotive parts according to claim 1, characterized in that, A pressure block (10) is fixedly installed at the bottom end of the linkage rod (7), and when the linkage rod (7) moves downward with the transmission shaft (1), the pressure block (10) comes into contact with the outer surface of the punched part (4).

4. The stamping and drilling apparatus for manufacturing automotive parts according to claim 3, characterized in that, Initially, the height of the bottom end of the punch (2) is higher than the height of the bottom end of the pressure block (10), thereby ensuring that the bottom end of the pressure block (10) contacts the surface of the punching part (4) first when the drive shaft (1) drives the punch (2) and the linkage assembly (5) to move down.

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