Thin-wall part precision numerical control machining cleaning method and filler

Abstract

According to the thin-wall part precision numerical control machining cleaning method and the filler, materials used by the formula filler are all industrial materials and are wide in source, easy to purchase and low in cost; the melting temperature of the filling material is 120 DEG C, and a common oil bath pan can meet the melting temperature requirement and meet the influence of cutting heat generated in the machining process on the precision of machined thin-wall parts. After being cooled and solidified, the filler in the formula can be well combined with a metal material, after a thin wall of a part is machined, the filler can be melted and removed from the thin-wall part at the temperature of 95 DEG C, the melted and collected filler can be repeatedly used, meanwhile, the melted and residual filler on the metal surface can be easily removed through gasoline and absolute ethyl alcohol, and the surface quality of the thin-wall part cannot be affected. The problem that the precision and dimensional tolerance of the part cannot meet the design requirements due to the fact that the thin-wall part is prone to deformation during machining is solved, the machining efficiency is improved, and the cost for machining the high-precision thin-wall part is reduced.

Description

technical field [0001] The invention relates to the field of parts processing, in particular to a numerical control processing cleaning method and a filling material, which can be used to fill cavities during numerical control processing of thin-walled parts with high precision or special-shaped thin-walled parts, and solve the problem of easy deformation of thin-walled parts during processing. Background technique [0002] Thin-walled parts are widely used in aviation, aerospace, automobile, and electromechanical products. Such parts usually require high dimensional accuracy and geometric tolerance accuracy. However, due to the poor rigidity and strength of thin-walled parts, they are subjected to cutting force, cutting heat, Due to the influence of factors such as clamping force and vibration of the machining system, deformation is easy to occur during the machining process, and the dimensional accuracy and surface quality of the parts are difficult to meet the design requi...

AI Technical Summary

Problems solved by technology

[0005] 1) The shrinkage of paraffin wax alone is relatively large, which is greater than 20% of the dimensional tolerance of the part. It is easy to fall off from the part during processing, and it is difficult to meet the requirements for parts with high precision requirements; paraffin wax melts at 43.3-65.5 ° C. During the process, the material will soften due to the cutting heat, which cannot meet the clamping and processing requirements of the machine tool. It can only be processed by reducing the speed and slow processing, which seriously affects the processing efficiency.

[0006] 2) The cost of urea as a filler is low, but the ammonia smell released by urea will cause bad smell stimulation, and urea will dissolve in the cooling liquid during processing, so only dry cutting method can be used, which will generate a lot of dust when cutting urea , causing adverse effects on the processing environment and the health of operators

[0007] 3) Low melting point alloys usually use a mixture of bismuth, lead, tin, indium and other alloys. After the low melting point alloy is recycled for more than 3 times, the alloy composition will be lost, resulting in a change in the composition ratio of the alloy composition, which will cause a change in the melting point of the low melting point alloy. The composition and melting point of the low melting point alloy must be regularly tested, which will increase the hidden cost of processing; in addition, the low melting point alloy has a high density, and the weight of the filled part is large, which is easy to cause deformation of the part, and clamping, turning over, etc. during the processing of the part Difficult; the cost of low-melting point alloys is high, which also increases the processing cost of parts

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