Machining methods and precautions for thin metal parts

Thin metal parts milling deformation is caused by many factors. Mainly due to clamping the workpiece when the clamping force, cutting the workpiece when the cutting force, The workpiece hinders the tool lead to the elastic deformation and plastic deformation when it is cut. thermal deformation resulting from elevated temperature in the cutting zone.

Measures to improve the precision and efficiency of thin metal parts are as follows:

1. The magnitude of cutting force is closely related to cutting parameters. When rough machining, cutting depth and feed rate can get bigger, cutting speed as high as possible for finishing, but should not be too high. Reasonable selection of cutting parameters three factors can reduce cutting force, thereby reducing deformation.

2. Reasonable selection of cutting fluid. When using high speed steel cutting tools, roughing machining, cooling with water solution. In finishing, medium or low speed machining is adopted, extreme pressure cutting oil with high lubricity and high concentration extreme pressure emulsion are selected. When using the hard alloy cutting tool, rough machining, the emulsion of low concentration liquid or water solution must be continuous, full cast, cutting fluid and machining precision machining with basically the same, but should be appropriate to improve the lubrication performance in the milling process, make full use of cutting fluid not only reduces the cutting force, cutting tool the life is prolonged, the surface roughness is reduced, while the workpiece is not affected by the influence of cutting heat and the processing of the dimensional and geometric accuracy changes, to ensure the parts machining quality.