Assembly Technology of Double-groove Top Roller Bearings in the Outer Ring of Textile Machinery

Abstract

The invention discloses an assembly process of an upper roller bearing with outer ring double grooves of a spinning machine, which comprises the selection of the dimensions of steel balls, a spindle and outer ring double R circular grooves of a bearing, realizes the assembly working procedures of the spindle, the outer ring of the bearing, a rear retainer, the rear row of the steel balls, a front retainer, the front row of the steel balls and the like by utilizing special tools and dialing needles in a rear row and solves the assembly problems of the steel balls in the double grooves of the bearing, thus the popularization and application of the double-groove bearing, in particular a double-groove bearing with 6 balls in a textile industry are realized, thereby solving the big problem of short service life of a single-groove bearing. The enhancement of the service life of the bearing reduces the consumption of materials for the textile industry and saves a large quantity of steel for a country; and simultaneously, because the double-groove bearing with the 6 balls has the advantage of uniform compression and stable rotation, the quality of yarns can be continuously stabilized.

Description

technical field [0001] The invention relates to an assembly process of a double-groove upper roller bearing on the outer ring of a textile machine Background technique [0002] The upper roller bearing of the textile machine plays the role of drafting and traction of the yarn during the spinning operation. The stability of the bearing operation is directly related to the drafting and traction quality of the yarn, which affects the thickness and evenness of the yarn. The influence of the quality of the yarn is more obvious, so there are strict requirements on the manufacturing quality of the top roller bearings. According to the standards issued by the industry ministry, the radial clearance requirements are controlled between 0.003-0.03 mm. The traditional top roller bearing outer ring has a single groove structure, that is, the rear row of steel balls is installed between the mandrel R groove and the inner hole of the bearing outer ring, and the front row of steel balls is ...

AI Technical Summary

Problems solved by technology

The traditional top roller bearing outer ring has a single groove structure, that is, the rear row of steel balls is installed between the mandrel R groove and the inner hole of the bearing outer ring, and the front row of steel balls is installed between the mandrel R groove and the bearing outer ring In the single groove of the R round groove, the line contact relationship between the rear row of steel balls and the inner hole of the outer ring of the bearing is formed, so that the rear row of steel balls run on different tracks, resulting in the inner hole of the outer ring of the bearing being easily worn and forming a gap. The service life of the bearing is very short, frequent replacement requires a large amount of steel investment, and the quality of the yarn is extremely unstable

The "top roller bearing" of Chinese patent 92213968.7 (the patent was terminated in 1996) and the "textile top roller bearing" of 200420023328.7 (the patent was terminated in 2007) successively proposed a double groove structure, that is, the front and rear of the bearing The rows of steel balls are installed in the double groove formed by the R circular groove of the respective mandrel and the R circular groove of the outer ring of the bearing, which avoids the gap between the rear row of steel balls and the inner hole of the outer ring of the bearing, which is easily worn due to line contact. , so that the bearing life is greatly extended, and the yarn quality is also greatly improved, but the bearing assembly of the double-groove structure is very difficult, especially the difficulty of assembling the 6-ball double-groove bearing is well known, resulting in the use of traditional yarns in the market. Single-groove bearings make double-groove structure bearings unable to be popularized and applied

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