Fine screw machining guide positioning sleeve

Abstract

The utility model discloses a fine screw rod processing guide positioning sleeve, aims at solving the problem of screw eccentricity, vibration and tool wear in the prior art. The positioning sleeve is cylindrical, mainly comprising a front section, a connecting section and a rear section, wherein the front section is used for limiting the eccentricity of the screw rod, and the rear section is used for stabilizing the eccentricity of the tool during the cutting of the screw rod in the machining process. The through hole of the front section is in the shape of a trumpet mouth, facilitating the quick guiding and loading of the screw rod. The connecting section is in the shape of a circular arc, and the cross section of the rear section is in the shape of an inverted "Omega". The rear section is further provided with an opening for the cutting of the screw rod by the tool, and the through hole and the screw rod are in clearance fit. In addition, the positioning sleeve is made of tungsten steel, having high wear resistance and stability. The invention improves the machining precision of the fine screw rod, prolongs the service life of the tool, reduces the vibration and error during the machining process, and has high practical value.

Images