A layout bending process

Abstract

This invention relates to the field of sheet metal forming technology, specifically a layout and bending process. It includes a steel plate. Before the steel plate is stamped by a punch press, sheet metal parts are pre-reserved on the surface of the steel plate. Multiple sheet metal parts are pre-stamped with mounting holes and through holes punched along the four edges of each sheet metal part. The four corners of each sheet metal part are connected to the steel plate. The sheet metal parts are rectangular in shape. Before bending the steel plate, the following steps are required: determining the bending radius by calculating the minimum bending radius and determining the bending radius according to process requirements. This layout and bending process, by bending the sheet metal parts together with the steel plate, facilitates quick placement by workers and allows the punch press to position the sheet metal parts and the steel plate. It also allows for bending multiple sheet metal parts simultaneously, effectively increasing bending efficiency and accuracy, and ensuring product quality.

Description

Technical Field

[0001] This invention relates to the field of sheet metal forming technology, and in particular to a layout bending process. Background Technology

[0002] Sheet metal processing is a comprehensive cold working process for thin metal sheets (usually less than 6mm), including shearing, punching / cutting / compound cutting, bending, welding, splicing, and forming (such as car bodies). Its significant characteristic is that the thickness of the same part is consistent. Products processed by sheet metal processing are called sheet metal parts. The sheet metal parts referred to in different industries are generally different, and are mostly used as a term during assembly. With the widespread use of special-shaped sheet metal parts, some structures require bending processes to process sheet metal parts.

[0003] The quality of the bending process directly affects the final dimensions and appearance of the product. Sheet metal parts are usually punched out of a whole sheet metal into multiple small sheet metal parts by a punch press, and then each small sheet metal part is bent one by one by a bending machine. However, dividing the sheet metal into multiple small sheet metal parts and then bending them has the disadvantage of low bending efficiency, and it is also easy to affect the bending accuracy due to placement deviation. Therefore, it is difficult to ensure product quality, and further improvement is necessary. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a typesetting bending process.

[0005] The objective of this invention is achieved through the following technical solution: a layout bending process in which, before the punch press presses the steel plate, a sheet metal part area is reserved on the surface of the steel plate, wherein there are multiple sheet metal part areas, mounting holes are punched in the sheet metal part areas, and slots are punched along the four edges of the sheet metal part areas, wherein the slots are through holes, so that the four corners of the sheet metal part areas are still connected to the steel plate, and the shape of the sheet metal part areas is rectangular;

[0006] Before bending the steel plate, the following steps are required:

[0007] S1. Determine the bending radius by calculating the minimum bending radius and determining the bending radius according to process requirements;

[0008] S2. Mark the bending area of ​​the steel plate by drawing lines, and mark the bending area in the bending area of ​​the steel plate by the bending radius determined in step S1.

[0009] In step S1, the formula for calculating the bend radius is R≥Rmin=NT, where Rmin is the minimum bending radius, T is the steel plate thickness, R is the bend radius, and N is the minimum relative bending radius.

[0010] S3. The two longer sides of the steel plate are A and B, and the bending point is C.

[0011] S4. Perform bending processing on the steel plate and sheet metal parts area, bending along A to C or along B to C, and perform bending processing on the steel plate and sheet metal parts area together through bending mold.

[0012] Preferably, after the steel plate and sheet metal parts are bent, the sheet metal parts are separated from the steel plate.

[0013] By adopting the above technical solution, multiple sheet metal parts are bent together with the steel plate, thereby increasing the bending efficiency and bending accuracy of the sheet metal parts. After bending, the sheet metal parts can be separated from the steel plate to obtain the sheet metal parts.

[0014] Preferably, the edges of the sheet metal part area are ground.

[0015] By adopting the above technical solutions, the aesthetics of sheet metal parts can be improved.

[0016] Preferably, after grinding the sheet metal area, the following steps are also required:

[0017] S5. Perform defect inspection on the bending area. Use inspection equipment to perform defect inspection on the sheet metal part area after bending.

[0018] S6. Perform surface treatment on the sheet metal part area after bending.

[0019] By adopting the above technical solution, the process steps after grinding the sheet metal parts are introduced.

[0020] Preferably, the inspection equipment used in step 5S includes a magnifying glass and an ultrasonic flaw detector.

[0021] By adopting the above technical solution, surface defects in the bending area can be inspected to ensure production quality.

[0022] Preferably, the surface treatment in step S6 includes first cleaning the rust stains, then washing with water (to remove residual acid), followed by electroplating, shot peening, and electrophoresis. Inspection is carried out according to industry standards. After inspection, the coating is applied and sealed before being put into storage.

[0023] By adopting the above technical solution, the fatigue strength and stress corrosion resistance of the material were improved.

[0024] The present invention has the following advantages:

[0025] This layout bending process, by bending the sheet metal parts and the steel plate together, not only facilitates the quick placement by the workers, but also makes it easier for the punch press to position the sheet metal parts and the steel plate. Furthermore, it allows multiple sheet metal parts to be bent at the same time, effectively increasing the bending efficiency and accuracy of the sheet metal parts and ensuring the quality of product manufacturing. Attached Figure Description

[0026] Figure 1 This is a schematic diagram showing the mounting holes after they have been punched out in this invention;

[0027] Figure 2 This is a schematic diagram of the steel plate and sheet metal parts before bending in this invention;

[0028] Figure 3 This is a schematic diagram of the steel plate and sheet metal parts after bending according to the present invention;

[0029] Figure 4 This is a structural schematic diagram of the sheet metal part area of ​​the present invention;

[0030] In the diagram: 100 - steel plate, 200 - sheet metal area, 201 - mounting hole, 202 - slot. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0032] like Figure 1-4 As shown, a layout bending process includes a steel plate 100. Before the steel plate 100 is stamped by a punch press, a sheet metal part area 200 is reserved on the surface of the steel plate 100. The size of the sheet metal part area 200 is the size of the sheet metal part to be made later. There are multiple sheet metal part areas 200. Mounting holes 201 are punched in the sheet metal part area 200. Slots 202 are punched along the four edges of the sheet metal part area 200. The slots 202 are through holes to ensure that the four corners of the sheet metal part area 200 are still connected to the steel plate 100, so as to avoid the sheet metal part area 200 from separating from the steel plate 100 during bending. This ensures that the sheet metal part area 200 can be bent together with the steel plate 100. The shape of the sheet metal part area 200 is rectangular.

[0033] Before bending the steel plate 100, the following steps are required:

[0034] S1. Determine the bending radius by calculating the minimum bending radius and determining the bending radius according to process requirements;

[0035] S2. Mark the bending area of ​​the steel plate 100 by drawing lines, and mark the bending area of ​​the steel plate 100 by the bending radius determined in step S1.

[0036] In step S1, the formula for calculating the bend radius is R≥Rmin=NT, where Rmin is the minimum bending radius, T is the thickness of the steel plate (100), R is the bend radius, and N is the minimum relative bending radius.

[0037] S3, the two longer sides of the steel plate 100 are A and B, and the bending point is C;

[0038] S4. Perform bending processing on the steel plate 100 and the sheet metal part area 200, bending along A to C or along B to C, and perform bending processing on the steel plate 100 and the sheet metal part area 200 together through the bending die.

[0039] As a preferred technical solution of the present invention, after the steel plate 100 and the sheet metal part area 200 are bent, the sheet metal part area 200 is separated from the steel plate 100.

[0040] As a preferred technical solution of the present invention, the edge of the sheet metal part area 200 is polished.

[0041] As a preferred technical solution of the present invention, after grinding the sheet metal part area 200, the following steps are also required:

[0042] S5. Perform defect inspection on the bending area. Use a 10x magnifying glass and an ultrasonic flaw detector to perform defect inspection on the sheet metal part area 200 after bending.

[0043] S6. Perform surface treatment on the sheet metal parts area 200 after bending. The surface treatment includes first cleaning the rust stains, then washing with water (to remove residual acid), followed by electroplating, shot peening and electrophoresis. Inspection: Performed according to industry standards. After inspection, the parts are coated and sealed before being put into storage.

[0044] The process steps of this invention are as follows:

[0045] S1. Reserve a sheet metal part area 200 on the surface of the steel plate 100, and punch out mounting holes 201 as required. Then punch out slots 202 along the four edges of the sheet metal part area 200, and ensure that the four corners of the sheet metal part area 200 are still connected to the steel plate 100.

[0046] S2. Determine the bending radius by calculating the minimum bending radius and determining the bending radius according to process requirements;

[0047] S3. Mark the bending area of ​​the steel plate 100 by drawing lines, and mark the bending area of ​​the steel plate 100 by the bending radius determined in step S1.

[0048] S4. Perform bending processing on the steel plate 100 and the sheet metal part area 200, bending along A to C or along B to C, and perform bending processing on the steel plate 100 and the sheet metal part area 200 together through the bending die.

[0049] S5. Separate the sheet metal area 200 from the steel plate 100 by external force, grind the edge of the sheet metal area 200, and perform surface treatment on the sheet metal area 200 after bending.

[0050] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A typesetting bending process, characterized in that: The steel plate (100) is pre-formed with sheet metal areas (200) on the surface of the steel plate (100) before the punch press presses the steel plate (100). There are multiple sheet metal areas (200). The sheet metal areas (200) are punched with mounting holes (201). Slots (202) are punched along the four edges of the sheet metal areas (200). The slots (202) are through holes. The four corners of the sheet metal areas (200) are connected to the steel plate (100). The sheet metal areas (200) are rectangular in shape. Before bending the steel plate (100), the following steps are required: S1. Determine the bending radius by calculating the minimum bending radius and determining the bending radius according to process requirements; S2. Draw lines to mark the bending area of ​​the steel plate (100), and mark the bending area in the bending area of ​​the steel plate (100) by the bending radius determined in step S1. In step S1, the formula for calculating the bend radius is R≥Rmin, Rmin=NT, where Rmin is the minimum bending radius, T is the thickness of the steel plate (100), R is the bend radius, and N is the minimum relative bending radius. S3, the two longer sides of the steel plate (100) are A and B, and the bending point is C; S4. The steel plate (100) and the sheet metal part area (200) are bent together by bending along A to C or along B to C. After the steel plate (100) and the sheet metal part area (200) are bent, the sheet metal part area (200) is separated from the steel plate (100).

2. The typesetting and bending process according to claim 1, characterized in that: The edges of the sheet metal part area (200) are polished.

3. The typesetting and bending process according to claim 1, characterized in that: After grinding the sheet metal area (200), the following steps are required: S5. Perform defect inspection on the bending area. Use inspection equipment to perform defect inspection on the sheet metal part area (200) after the bending process is completed. S6. Perform surface treatment on the sheet metal part area (200) after the bending process is completed.

4. The typesetting bending process according to claim 1, characterized in that: The inspection equipment used in step S5 includes a 10x magnifying glass and an ultrasonic flaw detector.

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