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What is the processing of non-standard parts?
What is processing of irregular parts
Irregular parts are rarely encountered when machining a part. Generally, they are steel plate parts welded into shape and rarely used in machining. Irregular part processing products are generally classified as: standard parts and non-standard parts. Standard parts are mostly products with the same size, material, and specifications under normal circumstances. These products usually have inventory. Non-standard parts are individual products with different sizes, materials, and specifications in special cases. These products are generally out of stock and are made according to design drawings. In terms of processes, irregular steel structures have three forming processes: cold bending, hot bending, and direct irregular welding.
Cold bending is a method of processing metal. It is a part of a metal material that is mechanically bent into a certain shape at room temperature. The advantages of cold bending are that it can produce various special thin, extra-wide, and complex profiles that cannot be produced by rolling. Its characteristic is to save metal materials. The product has good mechanical properties. Commonly used processing methods include bending rolls, bending rolls, bending rolls, and bending rolls.
Difficulties in processing irregular parts: difficulties in clamping on both sides during processing; elastic deformation during the processing; cutting force is easy to cause thermal deformation on the workpiece during processing. Characteristics of processing different types of irregular parts: relatively small parts generally have a small volume and complex shapes. They are not easy to clamp during processing and generally use a combined fixture clamping method. The fixture components ensure the coincidence benchmark of multiple clamping and positioning, and use a pressure plate to clamp the workpiece. The design features of the parts are that their dimensional tolerances, shape, and position tolerances are higher. In the processing design process, in order to ensure accuracy and prevent processing deformation, the previous processing often adopts the principle of process dispersion, rough and fine processing separately, multiple milling, grinding, and boring processes, resulting in too many processing processes.
Reasons for low efficiency of irregular parts processing: during the process of clamping parts, due to improper selection of fixtures, the clamping correction of parts is slow; the processing technology of parts is too scattered, the clamping and processing of parts are single, and the number of clamping corrections is large, which are the main reasons for the long clamping correction time of parts. During processing, unreasonable cutting methods, improper selection of tools, and frequent tool changes will also cause the pure cutting time of parts to be too long. Irregular parts are non-standard parts and can be adapted to local conditions, with intermittent work, making you feel more at ease with the product.
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