What problems should be paid attention to in precision metal working?

Processing technology of precision metal parts processing line is refers to the parts by embryo in the process of production to the finished product after the process sequence, in the formulation process, except the first consider the precise positioning standards selection, also should consider all aspects of processing method is selected, the level of centralization and decentralization of the technological process.

The division of the processing link and the distribution of the process sequence are difficult problems. The surface processing is generally based on the accuracy and roughness of the surface to select the final processing method, and then clear the processing method of the preparation process before finishing.

1.The characteristics of the workpiece raw materials

Different workpiece materials because of their physical characteristics and organic chemical characteristics are not the same, the surface processing process is not the same.For example, hardened steel parts are finished by grinding.Finishing machining of non ferrous metal parts should adopt fine turning or fine boring and other machining methods instead of grinding.

2.The construction and specifications of the workpiece

The size and construction of the workpiece will affect the actual processing effect.For example, for low precision hole processing using broaching, hinge, boring and grinding and other processing methods can.But the holes on the shell generally do not use pulling or grinding, and often use reaming and boring.The hole with too large diameter is not suitable for drilling, expanding and reaming.

3.Types of production

The selection and processing method should be consistent with the production and manufacturing types, and the processing method with high production efficiency and stable quality should be adopted for mass production and manufacturing.Such as plane and hole broaching processing;Small batch production and manufacture of pieces using planing, milling plane and drilling, reaming, reaming;For another example, in order to ensure reliable and stable quality and quantity, and ensure a high yield, honing and superfinishing processes are used to process high precision parts in a large number of manufacturing processes.

4.Specific production and manufacturing conditions

The natural processing environment of the company itself is also the key element that endangers the precision of the workpiece surface. Under the condition that the standard allows, the company should flexibly use the current machinery and equipment and processing technology to continue to introduce new technology applications, carry out technical renovation projects on old equipment, and explore the development potential of the company to improve the technical level.