Processing and molding manufacturing method of center shaft of special shaft sleeve for textile machinery by taking 5Cr2NiMoVSi magnesium alloy as material

Abstract

The invention relates to a processing and molding manufacturing method of a center shaft of a special shaft sleeve for textile machinery by taking 5Cr2NiMoVSi magnesium alloy as a material, and belongs to the technical field of textile machinery. The spinning rotor is achieved by the following procedures: forging a blank; annealing; mechanical roughening; finishing and forming; quenching and tempering at a high temperature; and renovating and polishing by a bench worker. The spinning rotor manufactured by the manufacturing method is easy to process, more reasonable in structure, good in abrasive resistance, good in mechanical property, longer in service life, good in airtightness, free of a lubricating grease overflow phenomenon, good in corrosion resistance, and good in inoxidizability, avoids pollution of a rubber covered roller and a cotton sliver, can ensure the lubricating requirements of a bearing, further prolongs the service life, and is applicable to high and low-speed textile machinery.

Description

technical field [0001] The invention belongs to the field of textile machinery and relates to a mandrel and its material. In particular, the invention relates to a method for processing and forming a mandrel of a special shaft sleeve of a textile machine made of a 5Cr2NiMoVSi magnesium alloy. Background technique [0002] With the continuous development of rotor spinning technology, people have deepened the research on the key parts and materials of rotor spinning. This is because in the production practice of rotor spinning, people have gradually realized that the wear of key parts will It will seriously affect the spinning quality, end breakage and production efficiency. It is widely used in textile machinery, especially on the combing machine. The combing machine is a key component that determines the draft and traction quality of the sliver when it pulls the sliver. , the thickness and evenness of the sliver depends on its quality. Therefore, there are high requirements...

AI Technical Summary

Problems solved by technology

For the defects of conventional needle roller bearings without an inner ring: such as the shaft sleeve is easy to heat, and it is hot to the hand during use; easy to leak oil, the internal grease overflows, pollutes the sliver of the rubber roller, and causes the needle roller bearing to wear due to oil loss, and then Abrasion of the mandrel affects the quality of the sliver, etc. The main reason is that the previous mandrel was long and slender and prone to deformation and bending. When the bearing is worn and loose, there is a joint between the rotating mandrel head and the stationary shell, which is prone to friction. However, due to heat generation, the seal between the shaft head and the shell is poor, and there is a gap that is easy to allow flying flowers to enter, thereby increasing frictional resistance, causing serious wear of the mandrel, further aggravating the wear of the bearing, and reducing the life of the sleeve.

In addition, the poor processing method leads to insufficient surface hardness of the mandrel, which cannot withstand the impact of impurities in the fiber. After the surface is fluffed, spinning cannot proceed smoothly.

All kinds of fatigue and wear are prone to occur, and unevenness will soon appear near the condensation groove of the rotor and on the sliding working surface, which will cause a sudden change in yarn tension, resulting in broken ends, poor evenness and other defects in textiles, reducing the quality of textile products. the quality of