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sheet metal processing production process

Yummy Yao 2015-07-20 13:51:19
Sheet metal processing production process refers to the entire process of products made from raw materials (or semi-finished products) is. Production of the machine in terms of transportation and storage, including raw materials, production preparation, processing and heat treatment of the blank manufacturing, parts, product assembly and testing, painting and packaging content. Content production process is very extensive, with the principles of modern enterprise system engineering and methods of production and to guide the production, the production process as having the input and output of the production system. Make scientific management of enterprises so that enterprises more Sheet metal processing production process, raw materials directly change (or blank) shape, size and performance, making it into the finished product, known processes. It is a major part of the production process. Such as rough casting, forging and welding; changes in material properties of heat treatment; parts machining, etc., all belong to the process. Process in turn one or several steps arranged in order thereof. In order to process qualified parts, thickness must be cut from the rough on that layer of metal, called allowance. Allowance can be divided into process margin and total balance. A step that needs to be cut layers of metal thickness, called the process allowance. From the rough to the finished product a total resection margin, called the total margin, equal to the corresponding margin of the surface of each step, and. Objective leave allowance in the workpiece is to be cut on a process of processing errors and surface defects left, such as chilled casting surface layer, porosity, sand layer, the surface of the oxide scale forgings, decarburization, surface crack , after cutting the internal stress layer and the surface roughness. Thereby improving the accuracy and surface roughness of the workpiece.
In the same procedure, the work may take a few installation. That part of the workpiece in one clamping process completed, called the installation. In step 1, there are two installation. First installation: with jaw chuck clamped cylindrical, facing C, boring the hole, the hole chamfering car cylindrical. Second installation: U-turn with the cylindrical clamping jaw plate, facing A and B, and the hole chamfer. The size of the allowance have a greater impact on the processing quality and production efficiency. Allowance is too large, not only increases the amount of labor machining, reduces productivity, and increased materials, tools and power consumption, improving the processing costs. If the allowance is too small, the procedure can neither eliminate various defects and errors, it can not compensate for clamping errors in this step during processing, resulting in waste. Its selection principle is to ensure the quality of the premise, to make margin as small as possible. In general, the more finishing processes smaller margin.