Precision Machining of Sheet Metal Parts

The main ways to realize the precision machining of parts are: using high-precision machining machine tools to process high-precision parts; Use error compensation technology to improve the machining accuracy of parts. Mechanical processing mainly includes manual processing and numerical control processing. “Sheet metal is a comprehensive cold working process for sheet metal (usually less than 6mm), including shearing, punching / cutting / compounding, folding, welding, riveting, splicing and forming (such as automobile body) Etc. Its remarkable feature is that the thickness of the same part is consistent. The products processed by the sheet metal process are called sheet metal parts. The way to distinguish whether a part is a sheet metal part or a machined part on a mechanical drawing is to see whether the thickness of the part is consistent. The thickness of sheet metal parts is consistent, while the thickness of machined parts is inconsistent.

The sheet metal drawing and part drawing must be drawn by the first angle projection method. It is not allowed to use the third angle drawing in the departure Bay. Unless the customer’s drawing is in a picture format or PDF file format that is difficult to convert, but the third angle view must be clearly marked, otherwise it will be implemented in accordance with the first angle. The drawing method of holes in the sheet metal drawing shall comply with the national standard drawing method and relevant regulations.

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Design Criteria of Sheet Metal Structure

According to the problems encountered in the actual machining process, the problems needing attention in the structural design of sheet metal are discussed from the following aspects, and the corresponding design criteria are given. Selection Criteria of Sheet Metal Materials Sheet metal is generally used for the installation of equipment shell and electrical circuit, so it is very important for the selection of sheet metal. Proper selection is not only conducive to processing, but also can reduce the cost on the premise of ensuring the strength. (1) In order to ensure the material utilization rate and the minimum number of die changes in bending, the thickness specifications of plates on the same structure shall not exceed three at most. For structures with high strength requirements, the method of pressing reinforcement on thin plates can be adopted; (2) It should be avoided that the unfolding size of parts is equal to the outline size of raw materials: the shape of plate...

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Semi-automatic Sheet Metal Production Line

At this stage, most of the production in the chassis and cabinet industry uses single machine production, including laser cutting machine, plasma cutting machine, plate shears, CNC punching, bending machine, oil press, riveting machine, argon arc welding machine, electric welding machine, laser welding, surface treatment equipment, etc. these equipment require a lot of labor and have low production efficiency. With the increasing labor costs and the increasingly standardized safety protection regulations, the chassis and cabinet industry urgently needs to change the current situation. Intelligent storage warehouse of sheet metal + automatic feeding + laser cutting machine + automatic cutting and automatic dividing. The other side of the warehouse can be punched by numerical control. It is best to use laser compound punching (manual cutting), automatic grinding, bending machining center (bending by robot), and another numerical control bending machine is equipped, fol...

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Application Field of Sheet Metal Product

With the development of social economy and industrial progress, sheet metal parts are more and more widely used in our daily production and life. Automobiles, machine tools, and various household appliances all use a variety of sheet metal parts. Therefore, how to make sheet metal parts with good quality and beautiful appearance is particularly important. The main raw materials of the sheet metal processing industry are non-ferrous alloy plates and thin steel. The non-ferrous metal industry and steel industry account for about 40% of the total cost of the industry. In addition, processing raw materials into sheet metal products requires forging machinery and molds. Therefore, the above four industries are the upstream of the sheet metal processing industry. Due to the wide range of application fields of sheet metal products, its downstream includes almost all manufacturing industries, mainly including communication electronics industry, automobile manufacturing industry, motorcyc...

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