Numerical control milling process method of thin-walled part die cavity

Abstract

The invention belongs to the numerical control process technology and relates to an improvement to the numerical control milling process method of the thin-walled part die cavity. The method comprises the following steps: installing and clamping an thin-walled part, selecting a mechanical clamped cutter and an end milling cutter, measuring parameter, selecting a programming origin and cutting parameters, determining the cutter position of the mechanical clamped cutter, measuring the length difference of the end milling cutter and the mechanical clamped cutter, roughing a insert bit mechanically-clamped numerical control milling cutter, finishing a high-speed steel end milling cutter, etc. The invention is characterized in that the cutting parameters are as follows: the cutting depth of the mechanical clamped cutter is 0.4-0.6mm, the cutting depth of the end milling cutter is equal to the depth of the thin-walled part die cavity; the cutting speed of the mechanical clamped cutter is 1500-2500rpm, the cutting speed of the end milling cutter is 400-600rpm; and the feeding amount of the mechanical clamped cutter is 700-1200mm / min, and the feeding amount of the end milling cutter is 300-500mm / min. The numerical control milling process method of the invention has high working efficiency, and can ensure the working size precision of the thin-walled part, obtain lower surface roughness, eliminate size distortion of the part and increase the product quality.

Description

technical field

[0001] The invention belongs to the numerical control processing technology and relates to the improvement of the numerical control milling process method for the cavity of thin-walled parts. Background technique

[0002] The processing method of the special cavity of thin-walled parts is initially processed by ordinary milling machine and high-speed steel milling cutter. The processing process is forging - rough turning - heat treatment - semi-finishing turning - grinding outer circle - turning thread - milling end groove - milling Cavity..., considering the hole positioning of thin-walled parts, the cavity milling process can only be arranged after the outer circle is finished. Since it is a thin-walled part, the minimum wall thickness is 3.5mm, and the cavity processing depth is 0.75mm ~0.85mm, the smaller the depth of the cavity, the greater the amount of tool clearance in the cavity during processing, and the smaller the deformation caused by cutting res...

Images