Machining process for false twister bearing spindle

Abstract

The invention discloses a machining process for a false twister bearing spindle. The machining process mainly comprises a procedure of plating nickel and phosphorus on the surface of the spindle. The problems of the corner effect and the poor surface quality due to hard chromium plating on the surface of the spindle are solved. Due to the fact that nickel-phosphorus plating surface treatment is adopted, the machining process has the advantages that the thickness of a plated layer is small, and the plated layer is high in hardness, uniform, good in abrasion resistance and high in corrosion resistance.

Description

technical field [0001] The invention belongs to the field of special components of chemical fiber machinery, and in particular relates to a processing technology of a false twister bearing mandrel. Background technique [0002] False twister bearings are key precision components for high-speed operation in frictional false twisters. They are widely used in high-speed stretch yarn machines and play a vital role in spinning quality. The false twister bearing adopts vibration reduction, shaft-connected double-groove double-row ball structure technology, the structure is reasonable and rigid, and the bearing raceway adopts advanced precision processing technology, which has stable and reliable operation, small vibration, low noise, small spindle speed difference, and convenient maintenance. And other advantages, and can realize the diversification of production product varieties through frequency conversion and speed regulation of the main engine. The outer circle of the bearin...

AI Technical Summary

Problems solved by technology

In the existing technological process, the surface of the false twister bearing mandrel is treated with electroplating hard chromium, because when hard chrome is plated, due to the characteristics of electroplating, the current density distribution on the surface of the mandrel is uneven, forming a sharp angle effect of electroplating, resulting in slender False twister bearing core shaft coating is very uneven, the roundness, taper, runout of the core shaft is very large and the surface quality is poor. Afterwards, the outer circle needs to be repeatedly finely ground to meet the technical requirements, resulting in a complicated production and processing process. There are problems of difficult processing, high production cost and low processing efficiency